Merge branch 'upstream' of git://lost.foo-projects.org/~ahkok/git/netdev-2.6 into...
Jeff Garzik [Thu, 31 Aug 2006 21:39:21 +0000 (17:39 -0400)]
226 files changed:
CREDITS
Documentation/connector/ucon.c [new file with mode: 0644]
Documentation/cpusets.txt
Documentation/filesystems/00-INDEX
Documentation/filesystems/relay.txt [new file with mode: 0644]
Documentation/filesystems/relayfs.txt [deleted file]
Documentation/input/joystick.txt
Documentation/scsi/ChangeLog.megaraid
Documentation/sysctl/fs.txt
Documentation/sysctl/kernel.txt
MAINTAINERS
Makefile
arch/arm/common/dmabounce.c
arch/arm/kernel/entry-armv.S
arch/arm/kernel/head.S
arch/arm/mach-s3c2410/Makefile
arch/arm/mach-s3c2410/dma.c
arch/arm/mach-versatile/core.c
arch/i386/Kconfig
arch/i386/kernel/acpi/boot.c
arch/i386/kernel/acpi/wakeup.S
arch/i386/kernel/cpu/cpufreq/acpi-cpufreq.c
arch/i386/pci/init.c
arch/i386/pci/mmconfig.c
arch/ia64/hp/sim/simscsi.c
arch/ia64/kernel/acpi.c
arch/powerpc/boot/dts/mpc8540ads.dts [new file with mode: 0644]
arch/powerpc/boot/dts/mpc8541cds.dts [new file with mode: 0644]
arch/powerpc/boot/dts/mpc8548cds.dts [new file with mode: 0644]
arch/powerpc/boot/dts/mpc8555cds.dts [new file with mode: 0644]
arch/powerpc/kernel/legacy_serial.c
arch/powerpc/kernel/prom_parse.c
arch/powerpc/kernel/time.c
arch/powerpc/kernel/traps.c
arch/powerpc/mm/hugetlbpage.c
arch/powerpc/platforms/85xx/Kconfig
arch/powerpc/platforms/85xx/mpc85xx_ads.c
arch/powerpc/platforms/85xx/mpc85xx_cds.c
arch/powerpc/platforms/86xx/mpc8641_hpcn.h
arch/powerpc/platforms/86xx/mpc86xx_hpcn.c
arch/powerpc/platforms/embedded6xx/mpc7448_hpc2.c
arch/powerpc/platforms/powermac/bootx_init.c
arch/powerpc/sysdev/fsl_soc.c
arch/powerpc/sysdev/tsi108_dev.c
arch/powerpc/sysdev/tsi108_pci.c
arch/sparc/kernel/setup.c
arch/sparc/kernel/smp.c
arch/sparc/kernel/sun4d_smp.c
arch/sparc/kernel/sun4m_smp.c
block/cfq-iosched.c
block/elevator.c
block/ll_rw_blk.c
drivers/acpi/ac.c
drivers/acpi/acpi_memhotplug.c
drivers/acpi/battery.c
drivers/acpi/bus.c
drivers/acpi/hotkey.c
drivers/acpi/i2c_ec.c
drivers/acpi/osl.c
drivers/acpi/sbs.c
drivers/acpi/scan.c
drivers/acpi/utils.c
drivers/base/node.c
drivers/cdrom/gscd.c
drivers/char/moxa.c
drivers/char/tty_io.c
drivers/char/tty_ioctl.c
drivers/char/vt_ioctl.c
drivers/hwmon/abituguru.c
drivers/i2c/chips/tps65010.c
drivers/ieee1394/ohci1394.c
drivers/infiniband/core/cache.c
drivers/infiniband/core/sa_query.c
drivers/infiniband/hw/mthca/mthca_main.c
drivers/infiniband/hw/mthca/mthca_provider.c
drivers/infiniband/hw/mthca/mthca_provider.h
drivers/infiniband/hw/mthca/mthca_qp.c
drivers/infiniband/ulp/iser/iscsi_iser.c
drivers/input/keyboard/atkbd.c
drivers/input/misc/wistron_btns.c
drivers/input/mouse/psmouse-base.c
drivers/md/dm-raid1.c
drivers/md/md.c
drivers/md/raid1.c
drivers/message/fusion/mptbase.h
drivers/message/fusion/mptfc.c
drivers/mtd/nand/ams-delta.c
drivers/mtd/nand/nand_base.c
drivers/net/skge.c
drivers/net/sky2.c
drivers/net/sky2.h
drivers/pci/hotplug/Kconfig
drivers/pci/hotplug/cpci_hotplug_pci.c
drivers/pci/pci-driver.c
drivers/pci/quirks.c
drivers/rtc/rtc-s3c.c
drivers/s390/block/dasd_devmap.c
drivers/s390/block/dasd_eckd.c
drivers/s390/scsi/zfcp_aux.c
drivers/s390/scsi/zfcp_ccw.c
drivers/s390/scsi/zfcp_def.h
drivers/s390/scsi/zfcp_erp.c
drivers/s390/scsi/zfcp_ext.h
drivers/s390/scsi/zfcp_fsf.c
drivers/s390/scsi/zfcp_qdio.c
drivers/s390/scsi/zfcp_scsi.c
drivers/scsi/ata_piix.c
drivers/scsi/esp.c
drivers/scsi/hptiop.c
drivers/scsi/ide-scsi.c
drivers/scsi/iscsi_tcp.c
drivers/scsi/iscsi_tcp.h
drivers/scsi/libata-core.c
drivers/scsi/libiscsi.c
drivers/scsi/lpfc/lpfc_attr.c
drivers/scsi/lpfc/lpfc_crtn.h
drivers/scsi/lpfc/lpfc_ct.c
drivers/scsi/lpfc/lpfc_els.c
drivers/scsi/lpfc/lpfc_hbadisc.c
drivers/scsi/lpfc/lpfc_init.c
drivers/scsi/lpfc/lpfc_mbox.c
drivers/scsi/lpfc/lpfc_nportdisc.c
drivers/scsi/lpfc/lpfc_scsi.c
drivers/scsi/lpfc/lpfc_sli.c
drivers/scsi/lpfc/lpfc_sli.h
drivers/scsi/lpfc/lpfc_version.h
drivers/scsi/megaraid/mega_common.h
drivers/scsi/megaraid/megaraid_ioctl.h
drivers/scsi/megaraid/megaraid_mbox.c
drivers/scsi/megaraid/megaraid_mbox.h
drivers/scsi/megaraid/megaraid_mm.c
drivers/scsi/megaraid/megaraid_mm.h
drivers/scsi/pdc_adma.c
drivers/scsi/qla2xxx/qla_def.h
drivers/scsi/qla2xxx/qla_init.c
drivers/scsi/qla2xxx/qla_iocb.c
drivers/scsi/qla2xxx/qla_isr.c
drivers/scsi/qla2xxx/qla_os.c
drivers/scsi/qla2xxx/qla_version.h
drivers/scsi/sata_via.c
drivers/scsi/scsi_error.c
drivers/scsi/scsi_transport_iscsi.c
drivers/scsi/sg.c
drivers/scsi/sym53c8xx_2/sym_glue.c
drivers/serial/sunsab.c
drivers/serial/sunzilog.c
drivers/usb/misc/cypress_cy7c63.c
drivers/usb/serial/pl2303.c
drivers/usb/serial/pl2303.h
drivers/usb/storage/unusual_devs.h
drivers/video/imacfb.c
drivers/video/matrox/g450_pll.c
fs/block_dev.c
fs/eventpoll.c
fs/exec.c
fs/ext2/super.c
fs/ext3/balloc.c
fs/ioprio.c
fs/jbd/commit.c
fs/jbd/journal.c
fs/jbd/transaction.c
fs/lockd/svcsubs.c
fs/minix/inode.c
fs/namei.c
fs/nfs/file.c
fs/nfs/idmap.c
fs/nfs/nfs4proc.c
fs/nfs/nfs4xdr.c
fs/nfs/read.c
fs/partitions/sun.c
fs/proc/proc_misc.c
fs/reiserfs/xattr.c
fs/udf/super.c
fs/udf/truncate.c
fs/ufs/inode.c
fs/ufs/truncate.c
include/asm-arm/arch-s3c2410/dma.h
include/asm-arm/arch-s3c2410/regs-rtc.h
include/asm-arm/procinfo.h
include/asm-i386/mmzone.h
include/asm-powerpc/pgalloc.h
include/asm-powerpc/system.h
include/asm-powerpc/tsi108.h
include/asm-powerpc/tsi108_irq.h [new file with mode: 0644]
include/asm-sparc64/pgtable.h
include/linux/compat_ioctl.h
include/linux/fs.h
include/linux/ioprio.h
include/linux/jbd.h
include/linux/netfilter_bridge.h
include/linux/nfs_xdr.h
include/linux/node.h
include/linux/sunrpc/rpc_pipe_fs.h
include/linux/sunrpc/xprt.h
include/linux/tty.h
include/linux/vt.h
include/net/sctp/sctp.h
include/net/sctp/sm.h
include/scsi/libiscsi.h
include/scsi/scsi_transport_iscsi.h
kernel/cpuset.c
kernel/futex.c
kernel/sched.c
kernel/stop_machine.c
lib/ts_bm.c
mm/swapfile.c
net/bridge/br_forward.c
net/dccp/ccids/ccid3.c
net/dccp/ccids/ccid3.h
net/dccp/ccids/lib/loss_interval.c
net/dccp/ccids/lib/loss_interval.h
net/dccp/ccids/lib/packet_history.c
net/dccp/ccids/lib/packet_history.h
net/dccp/ccids/lib/tfrc.h
net/dccp/ccids/lib/tfrc_equation.c
net/dccp/dccp.h
net/dccp/options.c
net/ipv4/netfilter/arp_tables.c
net/ipv4/tcp_output.c
net/ipv6/tcp_ipv6.c
net/sctp/sm_make_chunk.c
net/sctp/sm_statefuns.c
net/sctp/socket.c
net/sunrpc/auth_gss/auth_gss.c
net/sunrpc/clnt.c
net/sunrpc/rpc_pipe.c

diff --git a/CREDITS b/CREDITS
index 29be6d1..0fe904e 100644 (file)
--- a/CREDITS
+++ b/CREDITS
@@ -2209,7 +2209,7 @@ S: (address available on request)
 S: USA
 
 N: Ian McDonald
-E: iam4@cs.waikato.ac.nz
+E: ian.mcdonald@jandi.co.nz
 E: imcdnzl@gmail.com
 W: http://wand.net.nz/~iam4
 W: http://imcdnzl.blogspot.com
diff --git a/Documentation/connector/ucon.c b/Documentation/connector/ucon.c
new file mode 100644 (file)
index 0000000..d738cde
--- /dev/null
@@ -0,0 +1,206 @@
+/*
+ *     ucon.c
+ *
+ * Copyright (c) 2004+ Evgeniy Polyakov <johnpol@2ka.mipt.ru>
+ *
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#include <asm/types.h>
+
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <sys/poll.h>
+
+#include <linux/netlink.h>
+#include <linux/rtnetlink.h>
+
+#include <arpa/inet.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <string.h>
+#include <errno.h>
+#include <time.h>
+
+#include <linux/connector.h>
+
+#define DEBUG
+#define NETLINK_CONNECTOR      11
+
+#ifdef DEBUG
+#define ulog(f, a...) fprintf(stdout, f, ##a)
+#else
+#define ulog(f, a...) do {} while (0)
+#endif
+
+static int need_exit;
+static __u32 seq;
+
+static int netlink_send(int s, struct cn_msg *msg)
+{
+       struct nlmsghdr *nlh;
+       unsigned int size;
+       int err;
+       char buf[128];
+       struct cn_msg *m;
+
+       size = NLMSG_SPACE(sizeof(struct cn_msg) + msg->len);
+
+       nlh = (struct nlmsghdr *)buf;
+       nlh->nlmsg_seq = seq++;
+       nlh->nlmsg_pid = getpid();
+       nlh->nlmsg_type = NLMSG_DONE;
+       nlh->nlmsg_len = NLMSG_LENGTH(size - sizeof(*nlh));
+       nlh->nlmsg_flags = 0;
+
+       m = NLMSG_DATA(nlh);
+#if 0
+       ulog("%s: [%08x.%08x] len=%u, seq=%u, ack=%u.\n",
+              __func__, msg->id.idx, msg->id.val, msg->len, msg->seq, msg->ack);
+#endif
+       memcpy(m, msg, sizeof(*m) + msg->len);
+
+       err = send(s, nlh, size, 0);
+       if (err == -1)
+               ulog("Failed to send: %s [%d].\n",
+                       strerror(errno), errno);
+
+       return err;
+}
+
+int main(int argc, char *argv[])
+{
+       int s;
+       char buf[1024];
+       int len;
+       struct nlmsghdr *reply;
+       struct sockaddr_nl l_local;
+       struct cn_msg *data;
+       FILE *out;
+       time_t tm;
+       struct pollfd pfd;
+
+       if (argc < 2)
+               out = stdout;
+       else {
+               out = fopen(argv[1], "a+");
+               if (!out) {
+                       ulog("Unable to open %s for writing: %s\n",
+                               argv[1], strerror(errno));
+                       out = stdout;
+               }
+       }
+
+       memset(buf, 0, sizeof(buf));
+
+       s = socket(PF_NETLINK, SOCK_DGRAM, NETLINK_CONNECTOR);
+       if (s == -1) {
+               perror("socket");
+               return -1;
+       }
+
+       l_local.nl_family = AF_NETLINK;
+       l_local.nl_groups = 0x123; /* bitmask of requested groups */
+       l_local.nl_pid = 0;
+
+       if (bind(s, (struct sockaddr *)&l_local, sizeof(struct sockaddr_nl)) == -1) {
+               perror("bind");
+               close(s);
+               return -1;
+       }
+
+#if 0
+       {
+               int on = 0x57; /* Additional group number */
+               setsockopt(s, SOL_NETLINK, NETLINK_ADD_MEMBERSHIP, &on, sizeof(on));
+       }
+#endif
+       if (0) {
+               int i, j;
+
+               memset(buf, 0, sizeof(buf));
+
+               data = (struct cn_msg *)buf;
+
+               data->id.idx = 0x123;
+               data->id.val = 0x456;
+               data->seq = seq++;
+               data->ack = 0;
+               data->len = 0;
+
+               for (j=0; j<10; ++j) {
+                       for (i=0; i<1000; ++i) {
+                               len = netlink_send(s, data);
+                       }
+
+                       ulog("%d messages have been sent to %08x.%08x.\n", i, data->id.idx, data->id.val);
+               }
+
+               return 0;
+       }
+
+
+       pfd.fd = s;
+
+       while (!need_exit) {
+               pfd.events = POLLIN;
+               pfd.revents = 0;
+               switch (poll(&pfd, 1, -1)) {
+                       case 0:
+                               need_exit = 1;
+                               break;
+                       case -1:
+                               if (errno != EINTR) {
+                                       need_exit = 1;
+                                       break;
+                               }
+                               continue;
+               }
+               if (need_exit)
+                       break;
+
+               memset(buf, 0, sizeof(buf));
+               len = recv(s, buf, sizeof(buf), 0);
+               if (len == -1) {
+                       perror("recv buf");
+                       close(s);
+                       return -1;
+               }
+               reply = (struct nlmsghdr *)buf;
+
+               switch (reply->nlmsg_type) {
+               case NLMSG_ERROR:
+                       fprintf(out, "Error message received.\n");
+                       fflush(out);
+                       break;
+               case NLMSG_DONE:
+                       data = (struct cn_msg *)NLMSG_DATA(reply);
+
+                       time(&tm);
+                       fprintf(out, "%.24s : [%x.%x] [%08u.%08u].\n",
+                               ctime(&tm), data->id.idx, data->id.val, data->seq, data->ack);
+                       fflush(out);
+                       break;
+               default:
+                       break;
+               }
+       }
+
+       close(s);
+       return 0;
+}
index 159e2a0..76b4429 100644 (file)
@@ -217,6 +217,12 @@ exclusive cpuset.  Also, the use of a Linux virtual file system (vfs)
 to represent the cpuset hierarchy provides for a familiar permission
 and name space for cpusets, with a minimum of additional kernel code.
 
+The cpus file in the root (top_cpuset) cpuset is read-only.
+It automatically tracks the value of cpu_online_map, using a CPU
+hotplug notifier.  If and when memory nodes can be hotplugged,
+we expect to make the mems file in the root cpuset read-only
+as well, and have it track the value of node_online_map.
+
 
 1.4 What are exclusive cpusets ?
 --------------------------------
index 66fdc07..16dec61 100644 (file)
@@ -62,8 +62,8 @@ ramfs-rootfs-initramfs.txt
        - info on the 'in memory' filesystems ramfs, rootfs and initramfs.
 reiser4.txt
        - info on the Reiser4 filesystem based on dancing tree algorithms.
-relayfs.txt
-       - info on relayfs, for efficient streaming from kernel to user space.
+relay.txt
+       - info on relay, for efficient streaming from kernel to user space.
 romfs.txt
        - description of the ROMFS filesystem.
 smbfs.txt
diff --git a/Documentation/filesystems/relay.txt b/Documentation/filesystems/relay.txt
new file mode 100644 (file)
index 0000000..d6788da
--- /dev/null
@@ -0,0 +1,479 @@
+relay interface (formerly relayfs)
+==================================
+
+The relay interface provides a means for kernel applications to
+efficiently log and transfer large quantities of data from the kernel
+to userspace via user-defined 'relay channels'.
+
+A 'relay channel' is a kernel->user data relay mechanism implemented
+as a set of per-cpu kernel buffers ('channel buffers'), each
+represented as a regular file ('relay file') in user space.  Kernel
+clients write into the channel buffers using efficient write
+functions; these automatically log into the current cpu's channel
+buffer.  User space applications mmap() or read() from the relay files
+and retrieve the data as it becomes available.  The relay files
+themselves are files created in a host filesystem, e.g. debugfs, and
+are associated with the channel buffers using the API described below.
+
+The format of the data logged into the channel buffers is completely
+up to the kernel client; the relay interface does however provide
+hooks which allow kernel clients to impose some structure on the
+buffer data.  The relay interface doesn't implement any form of data
+filtering - this also is left to the kernel client.  The purpose is to
+keep things as simple as possible.
+
+This document provides an overview of the relay interface API.  The
+details of the function parameters are documented along with the
+functions in the relay interface code - please see that for details.
+
+Semantics
+=========
+
+Each relay channel has one buffer per CPU, each buffer has one or more
+sub-buffers.  Messages are written to the first sub-buffer until it is
+too full to contain a new message, in which case it it is written to
+the next (if available).  Messages are never split across sub-buffers.
+At this point, userspace can be notified so it empties the first
+sub-buffer, while the kernel continues writing to the next.
+
+When notified that a sub-buffer is full, the kernel knows how many
+bytes of it are padding i.e. unused space occurring because a complete
+message couldn't fit into a sub-buffer.  Userspace can use this
+knowledge to copy only valid data.
+
+After copying it, userspace can notify the kernel that a sub-buffer
+has been consumed.
+
+A relay channel can operate in a mode where it will overwrite data not
+yet collected by userspace, and not wait for it to be consumed.
+
+The relay channel itself does not provide for communication of such
+data between userspace and kernel, allowing the kernel side to remain
+simple and not impose a single interface on userspace.  It does
+provide a set of examples and a separate helper though, described
+below.
+
+The read() interface both removes padding and internally consumes the
+read sub-buffers; thus in cases where read(2) is being used to drain
+the channel buffers, special-purpose communication between kernel and
+user isn't necessary for basic operation.
+
+One of the major goals of the relay interface is to provide a low
+overhead mechanism for conveying kernel data to userspace.  While the
+read() interface is easy to use, it's not as efficient as the mmap()
+approach; the example code attempts to make the tradeoff between the
+two approaches as small as possible.
+
+klog and relay-apps example code
+================================
+
+The relay interface itself is ready to use, but to make things easier,
+a couple simple utility functions and a set of examples are provided.
+
+The relay-apps example tarball, available on the relay sourceforge
+site, contains a set of self-contained examples, each consisting of a
+pair of .c files containing boilerplate code for each of the user and
+kernel sides of a relay application.  When combined these two sets of
+boilerplate code provide glue to easily stream data to disk, without
+having to bother with mundane housekeeping chores.
+
+The 'klog debugging functions' patch (klog.patch in the relay-apps
+tarball) provides a couple of high-level logging functions to the
+kernel which allow writing formatted text or raw data to a channel,
+regardless of whether a channel to write into exists or not, or even
+whether the relay interface is compiled into the kernel or not.  These
+functions allow you to put unconditional 'trace' statements anywhere
+in the kernel or kernel modules; only when there is a 'klog handler'
+registered will data actually be logged (see the klog and kleak
+examples for details).
+
+It is of course possible to use the relay interface from scratch,
+i.e. without using any of the relay-apps example code or klog, but
+you'll have to implement communication between userspace and kernel,
+allowing both to convey the state of buffers (full, empty, amount of
+padding).  The read() interface both removes padding and internally
+consumes the read sub-buffers; thus in cases where read(2) is being
+used to drain the channel buffers, special-purpose communication
+between kernel and user isn't necessary for basic operation.  Things
+such as buffer-full conditions would still need to be communicated via
+some channel though.
+
+klog and the relay-apps examples can be found in the relay-apps
+tarball on http://relayfs.sourceforge.net
+
+The relay interface user space API
+==================================
+
+The relay interface implements basic file operations for user space
+access to relay channel buffer data.  Here are the file operations
+that are available and some comments regarding their behavior:
+
+open()     enables user to open an _existing_ channel buffer.
+
+mmap()      results in channel buffer being mapped into the caller's
+           memory space. Note that you can't do a partial mmap - you
+           must map the entire file, which is NRBUF * SUBBUFSIZE.
+
+read()      read the contents of a channel buffer.  The bytes read are
+           'consumed' by the reader, i.e. they won't be available
+           again to subsequent reads.  If the channel is being used
+           in no-overwrite mode (the default), it can be read at any
+           time even if there's an active kernel writer.  If the
+           channel is being used in overwrite mode and there are
+           active channel writers, results may be unpredictable -
+           users should make sure that all logging to the channel has
+           ended before using read() with overwrite mode.  Sub-buffer
+           padding is automatically removed and will not be seen by
+           the reader.
+
+sendfile()  transfer data from a channel buffer to an output file
+           descriptor. Sub-buffer padding is automatically removed
+           and will not be seen by the reader.
+
+poll()      POLLIN/POLLRDNORM/POLLERR supported.  User applications are
+           notified when sub-buffer boundaries are crossed.
+
+close()     decrements the channel buffer's refcount.  When the refcount
+           reaches 0, i.e. when no process or kernel client has the
+           buffer open, the channel buffer is freed.
+
+In order for a user application to make use of relay files, the
+host filesystem must be mounted.  For example,
+
+       mount -t debugfs debugfs /debug
+
+NOTE:   the host filesystem doesn't need to be mounted for kernel
+       clients to create or use channels - it only needs to be
+       mounted when user space applications need access to the buffer
+       data.
+
+
+The relay interface kernel API
+==============================
+
+Here's a summary of the API the relay interface provides to in-kernel clients:
+
+TBD(curr. line MT:/API/)
+  channel management functions:
+
+    relay_open(base_filename, parent, subbuf_size, n_subbufs,
+               callbacks)
+    relay_close(chan)
+    relay_flush(chan)
+    relay_reset(chan)
+
+  channel management typically called on instigation of userspace:
+
+    relay_subbufs_consumed(chan, cpu, subbufs_consumed)
+
+  write functions:
+
+    relay_write(chan, data, length)
+    __relay_write(chan, data, length)
+    relay_reserve(chan, length)
+
+  callbacks:
+
+    subbuf_start(buf, subbuf, prev_subbuf, prev_padding)
+    buf_mapped(buf, filp)
+    buf_unmapped(buf, filp)
+    create_buf_file(filename, parent, mode, buf, is_global)
+    remove_buf_file(dentry)
+
+  helper functions:
+
+    relay_buf_full(buf)
+    subbuf_start_reserve(buf, length)
+
+
+Creating a channel
+------------------
+
+relay_open() is used to create a channel, along with its per-cpu
+channel buffers.  Each channel buffer will have an associated file
+created for it in the host filesystem, which can be and mmapped or
+read from in user space.  The files are named basename0...basenameN-1
+where N is the number of online cpus, and by default will be created
+in the root of the filesystem (if the parent param is NULL).  If you
+want a directory structure to contain your relay files, you should
+create it using the host filesystem's directory creation function,
+e.g. debugfs_create_dir(), and pass the parent directory to
+relay_open().  Users are responsible for cleaning up any directory
+structure they create, when the channel is closed - again the host
+filesystem's directory removal functions should be used for that,
+e.g. debugfs_remove().
+
+In order for a channel to be created and the host filesystem's files
+associated with its channel buffers, the user must provide definitions
+for two callback functions, create_buf_file() and remove_buf_file().
+create_buf_file() is called once for each per-cpu buffer from
+relay_open() and allows the user to create the file which will be used
+to represent the corresponding channel buffer.  The callback should
+return the dentry of the file created to represent the channel buffer.
+remove_buf_file() must also be defined; it's responsible for deleting
+the file(s) created in create_buf_file() and is called during
+relay_close().
+
+Here are some typical definitions for these callbacks, in this case
+using debugfs:
+
+/*
+ * create_buf_file() callback.  Creates relay file in debugfs.
+ */
+static struct dentry *create_buf_file_handler(const char *filename,
+                                              struct dentry *parent,
+                                              int mode,
+                                              struct rchan_buf *buf,
+                                              int *is_global)
+{
+        return debugfs_create_file(filename, mode, parent, buf,
+                                  &relay_file_operations);
+}
+
+/*
+ * remove_buf_file() callback.  Removes relay file from debugfs.
+ */
+static int remove_buf_file_handler(struct dentry *dentry)
+{
+        debugfs_remove(dentry);
+
+        return 0;
+}
+
+/*
+ * relay interface callbacks
+ */
+static struct rchan_callbacks relay_callbacks =
+{
+        .create_buf_file = create_buf_file_handler,
+        .remove_buf_file = remove_buf_file_handler,
+};
+
+And an example relay_open() invocation using them:
+
+  chan = relay_open("cpu", NULL, SUBBUF_SIZE, N_SUBBUFS, &relay_callbacks);
+
+If the create_buf_file() callback fails, or isn't defined, channel
+creation and thus relay_open() will fail.
+
+The total size of each per-cpu buffer is calculated by multiplying the
+number of sub-buffers by the sub-buffer size passed into relay_open().
+The idea behind sub-buffers is that they're basically an extension of
+double-buffering to N buffers, and they also allow applications to
+easily implement random-access-on-buffer-boundary schemes, which can
+be important for some high-volume applications.  The number and size
+of sub-buffers is completely dependent on the application and even for
+the same application, different conditions will warrant different
+values for these parameters at different times.  Typically, the right
+values to use are best decided after some experimentation; in general,
+though, it's safe to assume that having only 1 sub-buffer is a bad
+idea - you're guaranteed to either overwrite data or lose events
+depending on the channel mode being used.
+
+The create_buf_file() implementation can also be defined in such a way
+as to allow the creation of a single 'global' buffer instead of the
+default per-cpu set.  This can be useful for applications interested
+mainly in seeing the relative ordering of system-wide events without
+the need to bother with saving explicit timestamps for the purpose of
+merging/sorting per-cpu files in a postprocessing step.
+
+To have relay_open() create a global buffer, the create_buf_file()
+implementation should set the value of the is_global outparam to a
+non-zero value in addition to creating the file that will be used to
+represent the single buffer.  In the case of a global buffer,
+create_buf_file() and remove_buf_file() will be called only once.  The
+normal channel-writing functions, e.g. relay_write(), can still be
+used - writes from any cpu will transparently end up in the global
+buffer - but since it is a global buffer, callers should make sure
+they use the proper locking for such a buffer, either by wrapping
+writes in a spinlock, or by copying a write function from relay.h and
+creating a local version that internally does the proper locking.
+
+Channel 'modes'
+---------------
+
+relay channels can be used in either of two modes - 'overwrite' or
+'no-overwrite'.  The mode is entirely determined by the implementation
+of the subbuf_start() callback, as described below.  The default if no
+subbuf_start() callback is defined is 'no-overwrite' mode.  If the
+default mode suits your needs, and you plan to use the read()
+interface to retrieve channel data, you can ignore the details of this
+section, as it pertains mainly to mmap() implementations.
+
+In 'overwrite' mode, also known as 'flight recorder' mode, writes
+continuously cycle around the buffer and will never fail, but will
+unconditionally overwrite old data regardless of whether it's actually
+been consumed.  In no-overwrite mode, writes will fail, i.e. data will
+be lost, if the number of unconsumed sub-buffers equals the total
+number of sub-buffers in the channel.  It should be clear that if
+there is no consumer or if the consumer can't consume sub-buffers fast
+enough, data will be lost in either case; the only difference is
+whether data is lost from the beginning or the end of a buffer.
+
+As explained above, a relay channel is made of up one or more
+per-cpu channel buffers, each implemented as a circular buffer
+subdivided into one or more sub-buffers.  Messages are written into
+the current sub-buffer of the channel's current per-cpu buffer via the
+write functions described below.  Whenever a message can't fit into
+the current sub-buffer, because there's no room left for it, the
+client is notified via the subbuf_start() callback that a switch to a
+new sub-buffer is about to occur.  The client uses this callback to 1)
+initialize the next sub-buffer if appropriate 2) finalize the previous
+sub-buffer if appropriate and 3) return a boolean value indicating
+whether or not to actually move on to the next sub-buffer.
+
+To implement 'no-overwrite' mode, the userspace client would provide
+an implementation of the subbuf_start() callback something like the
+following:
+
+static int subbuf_start(struct rchan_buf *buf,
+                        void *subbuf,
+                       void *prev_subbuf,
+                       unsigned int prev_padding)
+{
+       if (prev_subbuf)
+               *((unsigned *)prev_subbuf) = prev_padding;
+
+       if (relay_buf_full(buf))
+               return 0;
+
+       subbuf_start_reserve(buf, sizeof(unsigned int));
+
+       return 1;
+}
+
+If the current buffer is full, i.e. all sub-buffers remain unconsumed,
+the callback returns 0 to indicate that the buffer switch should not
+occur yet, i.e. until the consumer has had a chance to read the
+current set of ready sub-buffers.  For the relay_buf_full() function
+to make sense, the consumer is reponsible for notifying the relay
+interface when sub-buffers have been consumed via
+relay_subbufs_consumed().  Any subsequent attempts to write into the
+buffer will again invoke the subbuf_start() callback with the same
+parameters; only when the consumer has consumed one or more of the
+ready sub-buffers will relay_buf_full() return 0, in which case the
+buffer switch can continue.
+
+The implementation of the subbuf_start() callback for 'overwrite' mode
+would be very similar:
+
+static int subbuf_start(struct rchan_buf *buf,
+                        void *subbuf,
+                       void *prev_subbuf,
+                       unsigned int prev_padding)
+{
+       if (prev_subbuf)
+               *((unsigned *)prev_subbuf) = prev_padding;
+
+       subbuf_start_reserve(buf, sizeof(unsigned int));
+
+       return 1;
+}
+
+In this case, the relay_buf_full() check is meaningless and the
+callback always returns 1, causing the buffer switch to occur
+unconditionally.  It's also meaningless for the client to use the
+relay_subbufs_consumed() function in this mode, as it's never
+consulted.
+
+The default subbuf_start() implementation, used if the client doesn't
+define any callbacks, or doesn't define the subbuf_start() callback,
+implements the simplest possible 'no-overwrite' mode, i.e. it does
+nothing but return 0.
+
+Header information can be reserved at the beginning of each sub-buffer
+by calling the subbuf_start_reserve() helper function from within the
+subbuf_start() callback.  This reserved area can be used to store
+whatever information the client wants.  In the example above, room is
+reserved in each sub-buffer to store the padding count for that
+sub-buffer.  This is filled in for the previous sub-buffer in the
+subbuf_start() implementation; the padding value for the previous
+sub-buffer is passed into the subbuf_start() callback along with a
+pointer to the previous sub-buffer, since the padding value isn't
+known until a sub-buffer is filled.  The subbuf_start() callback is
+also called for the first sub-buffer when the channel is opened, to
+give the client a chance to reserve space in it.  In this case the
+previous sub-buffer pointer passed into the callback will be NULL, so
+the client should check the value of the prev_subbuf pointer before
+writing into the previous sub-buffer.
+
+Writing to a channel
+--------------------
+
+Kernel clients write data into the current cpu's channel buffer using
+relay_write() or __relay_write().  relay_write() is the main logging
+function - it uses local_irqsave() to protect the buffer and should be
+used if you might be logging from interrupt context.  If you know
+you'll never be logging from interrupt context, you can use
+__relay_write(), which only disables preemption.  These functions
+don't return a value, so you can't determine whether or not they
+failed - the assumption is that you wouldn't want to check a return
+value in the fast logging path anyway, and that they'll always succeed
+unless the buffer is full and no-overwrite mode is being used, in
+which case you can detect a failed write in the subbuf_start()
+callback by calling the relay_buf_full() helper function.
+
+relay_reserve() is used to reserve a slot in a channel buffer which
+can be written to later.  This would typically be used in applications
+that need to write directly into a channel buffer without having to
+stage data in a temporary buffer beforehand.  Because the actual write
+may not happen immediately after the slot is reserved, applications
+using relay_reserve() can keep a count of the number of bytes actually
+written, either in space reserved in the sub-buffers themselves or as
+a separate array.  See the 'reserve' example in the relay-apps tarball
+at http://relayfs.sourceforge.net for an example of how this can be
+done.  Because the write is under control of the client and is
+separated from the reserve, relay_reserve() doesn't protect the buffer
+at all - it's up to the client to provide the appropriate
+synchronization when using relay_reserve().
+
+Closing a channel
+-----------------
+
+The client calls relay_close() when it's finished using the channel.
+The channel and its associated buffers are destroyed when there are no
+longer any references to any of the channel buffers.  relay_flush()
+forces a sub-buffer switch on all the channel buffers, and can be used
+to finalize and process the last sub-buffers before the channel is
+closed.
+
+Misc
+----
+
+Some applications may want to keep a channel around and re-use it
+rather than open and close a new channel for each use.  relay_reset()
+can be used for this purpose - it resets a channel to its initial
+state without reallocating channel buffer memory or destroying
+existing mappings.  It should however only be called when it's safe to
+do so, i.e. when the channel isn't currently being written to.
+
+Finally, there are a couple of utility callbacks that can be used for
+different purposes.  buf_mapped() is called whenever a channel buffer
+is mmapped from user space and buf_unmapped() is called when it's
+unmapped.  The client can use this notification to trigger actions
+within the kernel application, such as enabling/disabling logging to
+the channel.
+
+
+Resources
+=========
+
+For news, example code, mailing list, etc. see the relay interface homepage:
+
+    http://relayfs.sourceforge.net
+
+
+Credits
+=======
+
+The ideas and specs for the relay interface came about as a result of
+discussions on tracing involving the following:
+
+Michel Dagenais                <michel.dagenais@polymtl.ca>
+Richard Moore          <richardj_moore@uk.ibm.com>
+Bob Wisniewski         <bob@watson.ibm.com>
+Karim Yaghmour         <karim@opersys.com>
+Tom Zanussi            <zanussi@us.ibm.com>
+
+Also thanks to Hubertus Franke for a lot of useful suggestions and bug
+reports.
diff --git a/Documentation/filesystems/relayfs.txt b/Documentation/filesystems/relayfs.txt
deleted file mode 100644 (file)
index 5832377..0000000
+++ /dev/null
@@ -1,442 +0,0 @@
-
-relayfs - a high-speed data relay filesystem
-============================================
-
-relayfs is a filesystem designed to provide an efficient mechanism for
-tools and facilities to relay large and potentially sustained streams
-of data from kernel space to user space.
-
-The main abstraction of relayfs is the 'channel'.  A channel consists
-of a set of per-cpu kernel buffers each represented by a file in the
-relayfs filesystem.  Kernel clients write into a channel using
-efficient write functions which automatically log to the current cpu's
-channel buffer.  User space applications mmap() the per-cpu files and
-retrieve the data as it becomes available.
-
-The format of the data logged into the channel buffers is completely
-up to the relayfs client; relayfs does however provide hooks which
-allow clients to impose some structure on the buffer data.  Nor does
-relayfs implement any form of data filtering - this also is left to
-the client.  The purpose is to keep relayfs as simple as possible.
-
-This document provides an overview of the relayfs API.  The details of
-the function parameters are documented along with the functions in the
-filesystem code - please see that for details.
-
-Semantics
-=========
-
-Each relayfs channel has one buffer per CPU, each buffer has one or
-more sub-buffers. Messages are written to the first sub-buffer until
-it is too full to contain a new message, in which case it it is
-written to the next (if available).  Messages are never split across
-sub-buffers.  At this point, userspace can be notified so it empties
-the first sub-buffer, while the kernel continues writing to the next.
-
-When notified that a sub-buffer is full, the kernel knows how many
-bytes of it are padding i.e. unused.  Userspace can use this knowledge
-to copy only valid data.
-
-After copying it, userspace can notify the kernel that a sub-buffer
-has been consumed.
-
-relayfs can operate in a mode where it will overwrite data not yet
-collected by userspace, and not wait for it to consume it.
-
-relayfs itself does not provide for communication of such data between
-userspace and kernel, allowing the kernel side to remain simple and
-not impose a single interface on userspace. It does provide a set of
-examples and a separate helper though, described below.
-
-klog and relay-apps example code
-================================
-
-relayfs itself is ready to use, but to make things easier, a couple
-simple utility functions and a set of examples are provided.
-
-The relay-apps example tarball, available on the relayfs sourceforge
-site, contains a set of self-contained examples, each consisting of a
-pair of .c files containing boilerplate code for each of the user and
-kernel sides of a relayfs application; combined these two sets of
-boilerplate code provide glue to easily stream data to disk, without
-having to bother with mundane housekeeping chores.
-
-The 'klog debugging functions' patch (klog.patch in the relay-apps
-tarball) provides a couple of high-level logging functions to the
-kernel which allow writing formatted text or raw data to a channel,
-regardless of whether a channel to write into exists or not, or
-whether relayfs is compiled into the kernel or is configured as a
-module.  These functions allow you to put unconditional 'trace'
-statements anywhere in the kernel or kernel modules; only when there
-is a 'klog handler' registered will data actually be logged (see the
-klog and kleak examples for details).
-
-It is of course possible to use relayfs from scratch i.e. without
-using any of the relay-apps example code or klog, but you'll have to
-implement communication between userspace and kernel, allowing both to
-convey the state of buffers (full, empty, amount of padding).
-
-klog and the relay-apps examples can be found in the relay-apps
-tarball on http://relayfs.sourceforge.net
-
-
-The relayfs user space API
-==========================
-
-relayfs implements basic file operations for user space access to
-relayfs channel buffer data.  Here are the file operations that are
-available and some comments regarding their behavior:
-
-open()  enables user to open an _existing_ buffer.
-
-mmap()  results in channel buffer being mapped into the caller's
-        memory space. Note that you can't do a partial mmap - you must
-        map the entire file, which is NRBUF * SUBBUFSIZE.
-
-read()  read the contents of a channel buffer.  The bytes read are
-        'consumed' by the reader i.e. they won't be available again
-        to subsequent reads.  If the channel is being used in
-        no-overwrite mode (the default), it can be read at any time
-        even if there's an active kernel writer.  If the channel is
-        being used in overwrite mode and there are active channel
-        writers, results may be unpredictable - users should make
-        sure that all logging to the channel has ended before using
-        read() with overwrite mode.
-
-poll()  POLLIN/POLLRDNORM/POLLERR supported.  User applications are
-        notified when sub-buffer boundaries are crossed.
-
-close() decrements the channel buffer's refcount.  When the refcount
-       reaches 0 i.e. when no process or kernel client has the buffer
-       open, the channel buffer is freed.
-
-
-In order for a user application to make use of relayfs files, the
-relayfs filesystem must be mounted.  For example,
-
-       mount -t relayfs relayfs /mnt/relay
-
-NOTE:  relayfs doesn't need to be mounted for kernel clients to create
-       or use channels - it only needs to be mounted when user space
-       applications need access to the buffer data.
-
-
-The relayfs kernel API
-======================
-
-Here's a summary of the API relayfs provides to in-kernel clients:
-
-
-  channel management functions:
-
-    relay_open(base_filename, parent, subbuf_size, n_subbufs,
-               callbacks)
-    relay_close(chan)
-    relay_flush(chan)
-    relay_reset(chan)
-    relayfs_create_dir(name, parent)
-    relayfs_remove_dir(dentry)
-    relayfs_create_file(name, parent, mode, fops, data)
-    relayfs_remove_file(dentry)
-
-  channel management typically called on instigation of userspace:
-
-    relay_subbufs_consumed(chan, cpu, subbufs_consumed)
-
-  write functions:
-
-    relay_write(chan, data, length)
-    __relay_write(chan, data, length)
-    relay_reserve(chan, length)
-
-  callbacks:
-
-    subbuf_start(buf, subbuf, prev_subbuf, prev_padding)
-    buf_mapped(buf, filp)
-    buf_unmapped(buf, filp)
-    create_buf_file(filename, parent, mode, buf, is_global)
-    remove_buf_file(dentry)
-
-  helper functions:
-
-    relay_buf_full(buf)
-    subbuf_start_reserve(buf, length)
-
-
-Creating a channel
-------------------
-
-relay_open() is used to create a channel, along with its per-cpu
-channel buffers.  Each channel buffer will have an associated file
-created for it in the relayfs filesystem, which can be opened and
-mmapped from user space if desired.  The files are named
-basename0...basenameN-1 where N is the number of online cpus, and by
-default will be created in the root of the filesystem.  If you want a
-directory structure to contain your relayfs files, you can create it
-with relayfs_create_dir() and pass the parent directory to
-relay_open().  Clients are responsible for cleaning up any directory
-structure they create when the channel is closed - use
-relayfs_remove_dir() for that.
-
-The total size of each per-cpu buffer is calculated by multiplying the
-number of sub-buffers by the sub-buffer size passed into relay_open().
-The idea behind sub-buffers is that they're basically an extension of
-double-buffering to N buffers, and they also allow applications to
-easily implement random-access-on-buffer-boundary schemes, which can
-be important for some high-volume applications.  The number and size
-of sub-buffers is completely dependent on the application and even for
-the same application, different conditions will warrant different
-values for these parameters at different times.  Typically, the right
-values to use are best decided after some experimentation; in general,
-though, it's safe to assume that having only 1 sub-buffer is a bad
-idea - you're guaranteed to either overwrite data or lose events
-depending on the channel mode being used.
-
-Channel 'modes'
----------------
-
-relayfs channels can be used in either of two modes - 'overwrite' or
-'no-overwrite'.  The mode is entirely determined by the implementation
-of the subbuf_start() callback, as described below.  In 'overwrite'
-mode, also known as 'flight recorder' mode, writes continuously cycle
-around the buffer and will never fail, but will unconditionally
-overwrite old data regardless of whether it's actually been consumed.
-In no-overwrite mode, writes will fail i.e. data will be lost, if the
-number of unconsumed sub-buffers equals the total number of
-sub-buffers in the channel.  It should be clear that if there is no
-consumer or if the consumer can't consume sub-buffers fast enought,
-data will be lost in either case; the only difference is whether data
-is lost from the beginning or the end of a buffer.
-
-As explained above, a relayfs channel is made of up one or more
-per-cpu channel buffers, each implemented as a circular buffer
-subdivided into one or more sub-buffers.  Messages are written into
-the current sub-buffer of the channel's current per-cpu buffer via the
-write functions described below.  Whenever a message can't fit into
-the current sub-buffer, because there's no room left for it, the
-client is notified via the subbuf_start() callback that a switch to a
-new sub-buffer is about to occur.  The client uses this callback to 1)
-initialize the next sub-buffer if appropriate 2) finalize the previous
-sub-buffer if appropriate and 3) return a boolean value indicating
-whether or not to actually go ahead with the sub-buffer switch.
-
-To implement 'no-overwrite' mode, the userspace client would provide
-an implementation of the subbuf_start() callback something like the
-following:
-
-static int subbuf_start(struct rchan_buf *buf,
-                        void *subbuf,
-                       void *prev_subbuf,
-                       unsigned int prev_padding)
-{
-       if (prev_subbuf)
-               *((unsigned *)prev_subbuf) = prev_padding;
-
-       if (relay_buf_full(buf))
-               return 0;
-
-       subbuf_start_reserve(buf, sizeof(unsigned int));
-
-       return 1;
-}
-
-If the current buffer is full i.e. all sub-buffers remain unconsumed,
-the callback returns 0 to indicate that the buffer switch should not
-occur yet i.e. until the consumer has had a chance to read the current
-set of ready sub-buffers.  For the relay_buf_full() function to make
-sense, the consumer is reponsible for notifying relayfs when
-sub-buffers have been consumed via relay_subbufs_consumed().  Any
-subsequent attempts to write into the buffer will again invoke the
-subbuf_start() callback with the same parameters; only when the
-consumer has consumed one or more of the ready sub-buffers will
-relay_buf_full() return 0, in which case the buffer switch can
-continue.
-
-The implementation of the subbuf_start() callback for 'overwrite' mode
-would be very similar:
-
-static int subbuf_start(struct rchan_buf *buf,
-                        void *subbuf,
-                       void *prev_subbuf,
-                       unsigned int prev_padding)
-{
-       if (prev_subbuf)
-               *((unsigned *)prev_subbuf) = prev_padding;
-
-       subbuf_start_reserve(buf, sizeof(unsigned int));
-
-       return 1;
-}
-
-In this case, the relay_buf_full() check is meaningless and the
-callback always returns 1, causing the buffer switch to occur
-unconditionally.  It's also meaningless for the client to use the
-relay_subbufs_consumed() function in this mode, as it's never
-consulted.
-
-The default subbuf_start() implementation, used if the client doesn't
-define any callbacks, or doesn't define the subbuf_start() callback,
-implements the simplest possible 'no-overwrite' mode i.e. it does
-nothing but return 0.
-
-Header information can be reserved at the beginning of each sub-buffer
-by calling the subbuf_start_reserve() helper function from within the
-subbuf_start() callback.  This reserved area can be used to store
-whatever information the client wants.  In the example above, room is
-reserved in each sub-buffer to store the padding count for that
-sub-buffer.  This is filled in for the previous sub-buffer in the
-subbuf_start() implementation; the padding value for the previous
-sub-buffer is passed into the subbuf_start() callback along with a
-pointer to the previous sub-buffer, since the padding value isn't
-known until a sub-buffer is filled.  The subbuf_start() callback is
-also called for the first sub-buffer when the channel is opened, to
-give the client a chance to reserve space in it.  In this case the
-previous sub-buffer pointer passed into the callback will be NULL, so
-the client should check the value of the prev_subbuf pointer before
-writing into the previous sub-buffer.
-
-Writing to a channel
---------------------
-
-kernel clients write data into the current cpu's channel buffer using
-relay_write() or __relay_write().  relay_write() is the main logging
-function - it uses local_irqsave() to protect the buffer and should be
-used if you might be logging from interrupt context.  If you know
-you'll never be logging from interrupt context, you can use
-__relay_write(), which only disables preemption.  These functions
-don't return a value, so you can't determine whether or not they
-failed - the assumption is that you wouldn't want to check a return
-value in the fast logging path anyway, and that they'll always succeed
-unless the buffer is full and no-overwrite mode is being used, in
-which case you can detect a failed write in the subbuf_start()
-callback by calling the relay_buf_full() helper function.
-
-relay_reserve() is used to reserve a slot in a channel buffer which
-can be written to later.  This would typically be used in applications
-that need to write directly into a channel buffer without having to
-stage data in a temporary buffer beforehand.  Because the actual write
-may not happen immediately after the slot is reserved, applications
-using relay_reserve() can keep a count of the number of bytes actually
-written, either in space reserved in the sub-buffers themselves or as
-a separate array.  See the 'reserve' example in the relay-apps tarball
-at http://relayfs.sourceforge.net for an example of how this can be
-done.  Because the write is under control of the client and is
-separated from the reserve, relay_reserve() doesn't protect the buffer
-at all - it's up to the client to provide the appropriate
-synchronization when using relay_reserve().
-
-Closing a channel
------------------
-
-The client calls relay_close() when it's finished using the channel.
-The channel and its associated buffers are destroyed when there are no
-longer any references to any of the channel buffers.  relay_flush()
-forces a sub-buffer switch on all the channel buffers, and can be used
-to finalize and process the last sub-buffers before the channel is
-closed.
-
-Creating non-relay files
-------------------------
-
-relay_open() automatically creates files in the relayfs filesystem to
-represent the per-cpu kernel buffers; it's often useful for
-applications to be able to create their own files alongside the relay
-files in the relayfs filesystem as well e.g. 'control' files much like
-those created in /proc or debugfs for similar purposes, used to
-communicate control information between the kernel and user sides of a
-relayfs application.  For this purpose the relayfs_create_file() and
-relayfs_remove_file() API functions exist.  For relayfs_create_file(),
-the caller passes in a set of user-defined file operations to be used
-for the file and an optional void * to a user-specified data item,
-which will be accessible via inode->u.generic_ip (see the relay-apps
-tarball for examples).  The file_operations are a required parameter
-to relayfs_create_file() and thus the semantics of these files are
-completely defined by the caller.
-
-See the relay-apps tarball at http://relayfs.sourceforge.net for
-examples of how these non-relay files are meant to be used.
-
-Creating relay files in other filesystems
------------------------------------------
-
-By default of course, relay_open() creates relay files in the relayfs
-filesystem.  Because relay_file_operations is exported, however, it's
-also possible to create and use relay files in other pseudo-filesytems
-such as debugfs.
-
-For this purpose, two callback functions are provided,
-create_buf_file() and remove_buf_file().  create_buf_file() is called
-once for each per-cpu buffer from relay_open() to allow the client to
-create a file to be used to represent the corresponding buffer; if
-this callback is not defined, the default implementation will create
-and return a file in the relayfs filesystem to represent the buffer.
-The callback should return the dentry of the file created to represent
-the relay buffer.  Note that the parent directory passed to
-relay_open() (and passed along to the callback), if specified, must
-exist in the same filesystem the new relay file is created in.  If
-create_buf_file() is defined, remove_buf_file() must also be defined;
-it's responsible for deleting the file(s) created in create_buf_file()
-and is called during relay_close().
-
-The create_buf_file() implementation can also be defined in such a way
-as to allow the creation of a single 'global' buffer instead of the
-default per-cpu set.  This can be useful for applications interested
-mainly in seeing the relative ordering of system-wide events without
-the need to bother with saving explicit timestamps for the purpose of
-merging/sorting per-cpu files in a postprocessing step.
-
-To have relay_open() create a global buffer, the create_buf_file()
-implementation should set the value of the is_global outparam to a
-non-zero value in addition to creating the file that will be used to
-represent the single buffer.  In the case of a global buffer,
-create_buf_file() and remove_buf_file() will be called only once.  The
-normal channel-writing functions e.g. relay_write() can still be used
-- writes from any cpu will transparently end up in the global buffer -
-but since it is a global buffer, callers should make sure they use the
-proper locking for such a buffer, either by wrapping writes in a
-spinlock, or by copying a write function from relayfs_fs.h and
-creating a local version that internally does the proper locking.
-
-See the 'exported-relayfile' examples in the relay-apps tarball for
-examples of creating and using relay files in debugfs.
-
-Misc
-----
-
-Some applications may want to keep a channel around and re-use it
-rather than open and close a new channel for each use.  relay_reset()
-can be used for this purpose - it resets a channel to its initial
-state without reallocating channel buffer memory or destroying
-existing mappings.  It should however only be called when it's safe to
-do so i.e. when the channel isn't currently being written to.
-
-Finally, there are a couple of utility callbacks that can be used for
-different purposes.  buf_mapped() is called whenever a channel buffer
-is mmapped from user space and buf_unmapped() is called when it's
-unmapped.  The client can use this notification to trigger actions
-within the kernel application, such as enabling/disabling logging to
-the channel.
-
-
-Resources
-=========
-
-For news, example code, mailing list, etc. see the relayfs homepage:
-
-    http://relayfs.sourceforge.net
-
-
-Credits
-=======
-
-The ideas and specs for relayfs came about as a result of discussions
-on tracing involving the following:
-
-Michel Dagenais                <michel.dagenais@polymtl.ca>
-Richard Moore          <richardj_moore@uk.ibm.com>
-Bob Wisniewski         <bob@watson.ibm.com>
-Karim Yaghmour         <karim@opersys.com>
-Tom Zanussi            <zanussi@us.ibm.com>
-
-Also thanks to Hubertus Franke for a lot of useful suggestions and bug
-reports.
index d53b857..841c353 100644 (file)
@@ -39,7 +39,6 @@ them. Bug reports and success stories are also welcome.
 
   The input project website is at:
 
-       http://www.suse.cz/development/input/
        http://atrey.karlin.mff.cuni.cz/~vojtech/input/
 
   There is also a mailing list for the driver at:
index c173806..a056bbe 100644 (file)
@@ -1,3 +1,126 @@
+Release Date   : Fri May 19 09:31:45 EST 2006 - Seokmann Ju <sju@lsil.com>
+Current Version : 2.20.4.9 (scsi module), 2.20.2.6 (cmm module)
+Older Version  : 2.20.4.8 (scsi module), 2.20.2.6 (cmm module)
+
+1.     Fixed a bug in megaraid_init_mbox().
+       Customer reported "garbage in file on x86_64 platform".
+       Root Cause: the driver registered controllers as 64-bit DMA capable
+       for those which are not support it.
+       Fix: Made change in the function inserting identification machanism
+       identifying 64-bit DMA capable controllers.
+
+       > -----Original Message-----
+       > From: Vasily Averin [mailto:vvs@sw.ru]
+       > Sent: Thursday, May 04, 2006 2:49 PM
+       > To: linux-scsi@vger.kernel.org; Kolli, Neela; Mukker, Atul;
+       > Ju, Seokmann; Bagalkote, Sreenivas;
+       > James.Bottomley@SteelEye.com; devel@openvz.org
+       > Subject: megaraid_mbox: garbage in file
+       >
+       > Hello all,
+       >
+       > I've investigated customers claim on the unstable work of
+       > their node and found a
+       > strange effect: reading from some files leads to the
+       >  "attempt to access beyond end of device" messages.
+       >
+       > I've checked filesystem, memory on the node, motherboard BIOS
+       > version, but it
+       > does not help and issue still has been reproduced by simple
+       > file reading.
+       >
+       > Reproducer is simple:
+       >
+       > echo 0xffffffff >/proc/sys/dev/scsi/logging_level ;
+       > cat /vz/private/101/root/etc/ld.so.cache >/tmp/ttt  ;
+       > echo 0 >/proc/sys/dev/scsi/logging
+       >
+       > It leads to the following messages in dmesg
+       >
+       > sd_init_command: disk=sda, block=871769260, count=26
+       > sda : block=871769260
+       > sda : reading 26/26 512 byte blocks.
+       > scsi_add_timer: scmd: f79ed980, time: 7500, (c02b1420)
+       > sd 0:1:0:0: send 0xf79ed980                  sd 0:1:0:0:
+       >         command: Read (10): 28 00 33 f6 24 ac 00 00 1a 00
+       > buffer = 0xf7cfb540, bufflen = 13312, done = 0xc0366b40,
+       > queuecommand 0xc0344010
+       > leaving scsi_dispatch_cmnd()
+       > scsi_delete_timer: scmd: f79ed980, rtn: 1
+       > sd 0:1:0:0: done 0xf79ed980 SUCCESS        0 sd 0:1:0:0:
+       >         command: Read (10): 28 00 33 f6 24 ac 00 00 1a 00
+       > scsi host busy 1 failed 0
+       > sd 0:1:0:0: Notifying upper driver of completion (result 0)
+       > sd_rw_intr: sda: res=0x0
+       > 26 sectors total, 13312 bytes done.
+       > use_sg is 4
+       > attempt to access beyond end of device
+       > sda6: rw=0, want=1044134458, limit=951401367
+       > Buffer I/O error on device sda6, logical block 522067228
+       > attempt to access beyond end of device
+
+2.     When INQUIRY with EVPD bit set issued to the MegaRAID controller,
+       system memory gets corrupted.
+       Root Cause: MegaRAID F/W handle the INQUIRY with EVPD bit set
+       incorrectly.
+       Fix: MegaRAID F/W has fixed the problem and being process of release,
+       soon. Meanwhile, driver will filter out the request.
+
+3.     One of member in the data structure of the driver leads unaligne
+       issue on 64-bit platform.
+       Customer reporeted "kernel unaligned access addrss" issue when
+       application communicates with MegaRAID HBA driver.
+       Root Cause: in uioc_t structure, one of member had misaligned and it
+       led system to display the error message.
+       Fix: A patch submitted to community from following folk.
+
+       > -----Original Message-----
+       > From: linux-scsi-owner@vger.kernel.org
+       > [mailto:linux-scsi-owner@vger.kernel.org] On Behalf Of Sakurai Hiroomi
+       > Sent: Wednesday, July 12, 2006 4:20 AM
+       > To: linux-scsi@vger.kernel.org; linux-kernel@vger.kernel.org
+       > Subject: Re: Help: strange messages from kernel on IA64 platform
+       >
+       > Hi,
+       >
+       > I saw same message.
+       >
+       > When GAM(Global Array Manager) is started, The following
+       > message output.
+       > kernel: kernel unaligned access to 0xe0000001fe1080d4,
+       > ip=0xa000000200053371
+       >
+       > The uioc structure used by ioctl is defined by packed,
+       > the allignment of each member are disturbed.
+       > In a 64 bit structure, the allignment of member doesn't fit 64 bit
+       > boundary. this causes this messages.
+       > In a 32 bit structure, we don't see the message because the allinment
+       > of member fit 32 bit boundary even if packed is specified.
+       >
+       > patch
+       > I Add 32 bit dummy member to fit 64 bit boundary. I tested.
+       > We confirmed this patch fix the problem by IA64 server.
+       >
+       > **************************************************************
+       > ****************
+       > --- linux-2.6.9/drivers/scsi/megaraid/megaraid_ioctl.h.orig
+       > 2006-04-03 17:13:03.000000000 +0900
+       > +++ linux-2.6.9/drivers/scsi/megaraid/megaraid_ioctl.h
+       > 2006-04-03 17:14:09.000000000 +0900
+       > @@ -132,6 +132,10 @@
+       >  /* Driver Data: */
+       >          void __user *           user_data;
+       >          uint32_t                user_data_len;
+       > +
+       > +        /* 64bit alignment */
+       > +        uint32_t                pad_0xBC;
+       > +
+       >          mraid_passthru_t        __user *user_pthru;
+       >
+       >          mraid_passthru_t        *pthru32;
+       > **************************************************************
+       > ****************
+
 Release Date   : Mon Apr 11 12:27:22 EST 2006 - Seokmann Ju <sju@lsil.com>
 Current Version : 2.20.4.8 (scsi module), 2.20.2.6 (cmm module)
 Older Version  : 2.20.4.7 (scsi module), 2.20.2.6 (cmm module)
index 0b62c62..5c3a519 100644 (file)
@@ -25,6 +25,7 @@ Currently, these files are in /proc/sys/fs:
 - inode-state
 - overflowuid
 - overflowgid
+- suid_dumpable
 - super-max
 - super-nr
 
@@ -131,6 +132,25 @@ The default is 65534.
 
 ==============================================================
 
+suid_dumpable:
+
+This value can be used to query and set the core dump mode for setuid
+or otherwise protected/tainted binaries. The modes are
+
+0 - (default) - traditional behaviour. Any process which has changed
+       privilege levels or is execute only will not be dumped
+1 - (debug) - all processes dump core when possible. The core dump is
+       owned by the current user and no security is applied. This is
+       intended for system debugging situations only. Ptrace is unchecked.
+2 - (suidsafe) - any binary which normally would not be dumped is dumped
+       readable by root only. This allows the end user to remove
+       such a dump but not access it directly. For security reasons
+       core dumps in this mode will not overwrite one another or
+       other files. This mode is appropriate when adminstrators are
+       attempting to debug problems in a normal environment.
+
+==============================================================
+
 super-max & super-nr:
 
 These numbers control the maximum number of superblocks, and
index 7345c33..89bf8c2 100644 (file)
@@ -50,7 +50,6 @@ show up in /proc/sys/kernel:
 - shmmax                      [ sysv ipc ]
 - shmmni
 - stop-a                      [ SPARC only ]
-- suid_dumpable
 - sysrq                       ==> Documentation/sysrq.txt
 - tainted
 - threads-max
@@ -310,25 +309,6 @@ kernel.  This value defaults to SHMMAX.
 
 ==============================================================
 
-suid_dumpable:
-
-This value can be used to query and set the core dump mode for setuid
-or otherwise protected/tainted binaries. The modes are
-
-0 - (default) - traditional behaviour. Any process which has changed
-       privilege levels or is execute only will not be dumped
-1 - (debug) - all processes dump core when possible. The core dump is
-       owned by the current user and no security is applied. This is
-       intended for system debugging situations only. Ptrace is unchecked.
-2 - (suidsafe) - any binary which normally would not be dumped is dumped
-       readable by root only. This allows the end user to remove
-       such a dump but not access it directly. For security reasons
-       core dumps in this mode will not overwrite one another or
-       other files. This mode is appropriate when adminstrators are
-       attempting to debug problems in a normal environment.
-
-==============================================================
-
 tainted: 
 
 Non-zero if the kernel has been tainted.  Numeric values, which
index d3315a5..3bbd706 100644 (file)
@@ -889,6 +889,12 @@ M: rdunlap@xenotime.net
 T:     git http://tali.admingilde.org/git/linux-docbook.git
 S:     Maintained
 
+DOCKING STATION DRIVER
+P:     Kristen Carlson Accardi
+M:     kristen.c.accardi@intel.com
+L:     linux-acpi@vger.kernel.org
+S:     Maintained
+
 DOUBLETALK DRIVER
 P:     James R. Van Zandt
 M:     jrv@vanzandt.mv.com
index 8406d02..33559b5 100644 (file)
--- a/Makefile
+++ b/Makefile
@@ -1,7 +1,7 @@
 VERSION = 2
 PATCHLEVEL = 6
 SUBLEVEL = 18
-EXTRAVERSION = -rc4
+EXTRAVERSION = -rc5
 NAME=Crazed Snow-Weasel
 
 # *DOCUMENTATION*
index 5b7c263..028bdc9 100644 (file)
@@ -179,17 +179,19 @@ alloc_safe_buffer(struct dmabounce_device_info *device_info, void *ptr,
 static inline struct safe_buffer *
 find_safe_buffer(struct dmabounce_device_info *device_info, dma_addr_t safe_dma_addr)
 {
-       struct safe_buffer *b = NULL;
+       struct safe_buffer *b, *rb = NULL;
        unsigned long flags;
 
        read_lock_irqsave(&device_info->lock, flags);
 
        list_for_each_entry(b, &device_info->safe_buffers, node)
-               if (b->safe_dma_addr == safe_dma_addr)
+               if (b->safe_dma_addr == safe_dma_addr) {
+                       rb = b;
                        break;
+               }
 
        read_unlock_irqrestore(&device_info->lock, flags);
-       return b;
+       return rb;
 }
 
 static inline void
index 7ea5f01..de4e331 100644 (file)
@@ -634,6 +634,14 @@ ENTRY(__switch_to)
  * purpose.
  */
 
+       .macro  usr_ret, reg
+#ifdef CONFIG_ARM_THUMB
+       bx      \reg
+#else
+       mov     pc, \reg
+#endif
+       .endm
+
        .align  5
        .globl  __kuser_helper_start
 __kuser_helper_start:
@@ -675,7 +683,7 @@ __kuser_memory_barrier:                             @ 0xffff0fa0
 #if __LINUX_ARM_ARCH__ >= 6 && defined(CONFIG_SMP)
        mcr     p15, 0, r0, c7, c10, 5  @ dmb
 #endif
-       mov     pc, lr
+       usr_ret lr
 
        .align  5
 
@@ -778,7 +786,7 @@ __kuser_cmpxchg:                            @ 0xffff0fc0
        mov     r0, #-1
        adds    r0, r0, #0
 #endif
-       mov     pc, lr
+       usr_ret lr
 
 #else
 
@@ -792,7 +800,7 @@ __kuser_cmpxchg:                            @ 0xffff0fc0
 #ifdef CONFIG_SMP
        mcr     p15, 0, r0, c7, c10, 5  @ dmb
 #endif
-       mov     pc, lr
+       usr_ret lr
 
 #endif
 
@@ -834,16 +842,11 @@ __kuser_cmpxchg:                          @ 0xffff0fc0
 __kuser_get_tls:                               @ 0xffff0fe0
 
 #if !defined(CONFIG_HAS_TLS_REG) && !defined(CONFIG_TLS_REG_EMUL)
-
        ldr     r0, [pc, #(16 - 8)]             @ TLS stored at 0xffff0ff0
-       mov     pc, lr
-
 #else
-
        mrc     p15, 0, r0, c13, c0, 3          @ read TLS register
-       mov     pc, lr
-
 #endif
+       usr_ret lr
 
        .rep    5
        .word   0                       @ pad up to __kuser_helper_version
index 4fe386e..5365d4e 100644 (file)
@@ -118,7 +118,7 @@ ENTRY(secondary_startup)
        sub     r4, r4, r5                      @ mmu has been enabled
        ldr     r4, [r7, r4]                    @ get secondary_data.pgdir
        adr     lr, __enable_mmu                @ return address
-       add     pc, r10, #12                    @ initialise processor
+       add     pc, r10, #PROCINFO_INITFUNC     @ initialise processor
                                                @ (return control reg)
 
        /*
index 0c79386..273e05f 100644 (file)
@@ -10,45 +10,47 @@ obj-m                       :=
 obj-n                  :=
 obj-                   :=
 
+# DMA
+obj-$(CONFIG_S3C2410_DMA)      += dma.o
+
 # S3C2400 support files
-obj-$(CONFIG_CPU_S3C2400)  += s3c2400-gpio.o
+obj-$(CONFIG_CPU_S3C2400)      += s3c2400-gpio.o
 
 # S3C2410 support files
 
-obj-$(CONFIG_CPU_S3C2410)  += s3c2410.o
-obj-$(CONFIG_CPU_S3C2410)  += s3c2410-gpio.o
-obj-$(CONFIG_S3C2410_DMA)  += dma.o
+obj-$(CONFIG_CPU_S3C2410)      += s3c2410.o
+obj-$(CONFIG_CPU_S3C2410)      += s3c2410-gpio.o
 
 # Power Management support
 
-obj-$(CONFIG_PM)          += pm.o sleep.o
-obj-$(CONFIG_PM_SIMTEC)           += pm-simtec.o
+obj-$(CONFIG_PM)               += pm.o sleep.o
+obj-$(CONFIG_PM_SIMTEC)                += pm-simtec.o
 
 # S3C2412 support
-obj-$(CONFIG_CPU_S3C2412)  += s3c2412.o
-obj-$(CONFIG_CPU_S3C2412)  += s3c2412-clock.o
+obj-$(CONFIG_CPU_S3C2412)      += s3c2412.o
+obj-$(CONFIG_CPU_S3C2412)      += s3c2412-clock.o
 
 #
 # S3C244X support
 
-obj-$(CONFIG_CPU_S3C244X)  += s3c244x.o
-obj-$(CONFIG_CPU_S3C244X)  += s3c244x-irq.o
+obj-$(CONFIG_CPU_S3C244X)      += s3c244x.o
+obj-$(CONFIG_CPU_S3C244X)      += s3c244x-irq.o
 
 # Clock control
 
-obj-$(CONFIG_S3C2410_CLOCK) += s3c2410-clock.o
+obj-$(CONFIG_S3C2410_CLOCK)    += s3c2410-clock.o
 
 # S3C2440 support
 
-obj-$(CONFIG_CPU_S3C2440)  += s3c2440.o s3c2440-dsc.o
-obj-$(CONFIG_CPU_S3C2440)  += s3c2440-irq.o
-obj-$(CONFIG_CPU_S3C2440)  += s3c2440-clock.o
-obj-$(CONFIG_CPU_S3C2440)  += s3c2410-gpio.o
+obj-$(CONFIG_CPU_S3C2440)      += s3c2440.o s3c2440-dsc.o
+obj-$(CONFIG_CPU_S3C2440)      += s3c2440-irq.o
+obj-$(CONFIG_CPU_S3C2440)      += s3c2440-clock.o
+obj-$(CONFIG_CPU_S3C2440)      += s3c2410-gpio.o
 
 # S3C2442 support
 
-obj-$(CONFIG_CPU_S3C2442)  += s3c2442.o
-obj-$(CONFIG_CPU_S3C2442)  += s3c2442-clock.o
+obj-$(CONFIG_CPU_S3C2442)      += s3c2442.o
+obj-$(CONFIG_CPU_S3C2442)      += s3c2442-clock.o
 
 # bast extras
 
index 094cc52..2585545 100644 (file)
@@ -112,7 +112,7 @@ dmadbg_capture(s3c2410_dma_chan_t *chan, struct s3c2410_dma_regstate *regs)
 }
 
 static void
-dmadbg_showregs(const char *fname, int line, s3c2410_dma_chan_t *chan,
+dmadbg_dumpregs(const char *fname, int line, s3c2410_dma_chan_t *chan,
                 struct s3c2410_dma_regstate *regs)
 {
        printk(KERN_DEBUG "dma%d: %s:%d: DCSRC=%08lx, DISRC=%08lx, DSTAT=%08lx DMT=%02lx, DCON=%08lx\n",
@@ -132,7 +132,16 @@ dmadbg_showchan(const char *fname, int line, s3c2410_dma_chan_t *chan)
               chan->number, fname, line, chan->load_state,
               chan->curr, chan->next, chan->end);
 
-       dmadbg_showregs(fname, line, chan, &state);
+       dmadbg_dumpregs(fname, line, chan, &state);
+}
+
+static void
+dmadbg_showregs(const char *fname, int line, s3c2410_dma_chan_t *chan)
+{
+       struct s3c2410_dma_regstate state;
+
+       dmadbg_capture(chan, &state);
+       dmadbg_dumpregs(fname, line, chan, &state);
 }
 
 #define dbg_showregs(chan) dmadbg_showregs(__FUNCTION__, __LINE__, (chan))
@@ -253,10 +262,14 @@ s3c2410_dma_loadbuffer(s3c2410_dma_chan_t *chan,
                         buf->next);
                reload = (buf->next == NULL) ? S3C2410_DCON_NORELOAD : 0;
        } else {
-               pr_debug("load_state is %d => autoreload\n", chan->load_state);
+               //pr_debug("load_state is %d => autoreload\n", chan->load_state);
                reload = S3C2410_DCON_AUTORELOAD;
        }
 
+       if ((buf->data & 0xf0000000) != 0x30000000) {
+               dmawarn("dmaload: buffer is %p\n", (void *)buf->data);
+       }
+
        writel(buf->data, chan->addr_reg);
 
        dma_wrreg(chan, S3C2410_DMA_DCON,
@@ -370,7 +383,7 @@ static int s3c2410_dma_start(s3c2410_dma_chan_t *chan)
        tmp |= S3C2410_DMASKTRIG_ON;
        dma_wrreg(chan, S3C2410_DMA_DMASKTRIG, tmp);
 
-       pr_debug("wrote %08lx to DMASKTRIG\n", tmp);
+       pr_debug("dma%d: %08lx to DMASKTRIG\n", chan->number, tmp);
 
 #if 0
        /* the dma buffer loads should take care of clearing the AUTO
@@ -384,7 +397,30 @@ static int s3c2410_dma_start(s3c2410_dma_chan_t *chan)
 
        dbg_showchan(chan);
 
+       /* if we've only loaded one buffer onto the channel, then chec
+        * to see if we have another, and if so, try and load it so when
+        * the first buffer is finished, the new one will be loaded onto
+        * the channel */
+
+       if (chan->next != NULL) {
+               if (chan->load_state == S3C2410_DMALOAD_1LOADED) {
+
+                       if (s3c2410_dma_waitforload(chan, __LINE__) == 0) {
+                               pr_debug("%s: buff not yet loaded, no more todo\n",
+                                        __FUNCTION__);
+                       } else {
+                               chan->load_state = S3C2410_DMALOAD_1RUNNING;
+                               s3c2410_dma_loadbuffer(chan, chan->next);
+                       }
+
+               } else if (chan->load_state == S3C2410_DMALOAD_1RUNNING) {
+                       s3c2410_dma_loadbuffer(chan, chan->next);
+               }
+       }
+
+
        local_irq_restore(flags);
+
        return 0;
 }
 
@@ -436,12 +472,11 @@ int s3c2410_dma_enqueue(unsigned int channel, void *id,
        buf = kmem_cache_alloc(dma_kmem, GFP_ATOMIC);
        if (buf == NULL) {
                pr_debug("%s: out of memory (%ld alloc)\n",
-                        __FUNCTION__, sizeof(*buf));
+                        __FUNCTION__, (long)sizeof(*buf));
                return -ENOMEM;
        }
 
-       pr_debug("%s: new buffer %p\n", __FUNCTION__, buf);
-
+       //pr_debug("%s: new buffer %p\n", __FUNCTION__, buf);
        //dbg_showchan(chan);
 
        buf->next  = NULL;
@@ -537,14 +572,20 @@ s3c2410_dma_lastxfer(s3c2410_dma_chan_t *chan)
        case S3C2410_DMALOAD_1LOADED:
                if (s3c2410_dma_waitforload(chan, __LINE__) == 0) {
                                /* flag error? */
-                       printk(KERN_ERR "dma%d: timeout waiting for load\n",
-                              chan->number);
+                       printk(KERN_ERR "dma%d: timeout waiting for load (%s)\n",
+                              chan->number, __FUNCTION__);
                        return;
                }
                break;
 
+       case S3C2410_DMALOAD_1LOADED_1RUNNING:
+               /* I belive in this case we do not have anything to do
+                * until the next buffer comes along, and we turn off the
+                * reload */
+               return;
+
        default:
-               pr_debug("dma%d: lastxfer: unhandled load_state %d with no next",
+               pr_debug("dma%d: lastxfer: unhandled load_state %d with no next\n",
                         chan->number, chan->load_state);
                return;
 
@@ -629,7 +670,14 @@ s3c2410_dma_irq(int irq, void *devpw, struct pt_regs *regs)
        } else {
        }
 
-       if (chan->next != NULL) {
+       /* only reload if the channel is still running... our buffer done
+        * routine may have altered the state by requesting the dma channel
+        * to stop or shutdown... */
+
+       /* todo: check that when the channel is shut-down from inside this
+        * function, we cope with unsetting reload, etc */
+
+       if (chan->next != NULL && chan->state != S3C2410_DMA_IDLE) {
                unsigned long flags;
 
                switch (chan->load_state) {
@@ -644,8 +692,8 @@ s3c2410_dma_irq(int irq, void *devpw, struct pt_regs *regs)
                case S3C2410_DMALOAD_1LOADED:
                        if (s3c2410_dma_waitforload(chan, __LINE__) == 0) {
                                /* flag error? */
-                               printk(KERN_ERR "dma%d: timeout waiting for load\n",
-                                      chan->number);
+                               printk(KERN_ERR "dma%d: timeout waiting for load (%s)\n",
+                                      chan->number, __FUNCTION__);
                                return IRQ_HANDLED;
                        }
 
@@ -678,8 +726,6 @@ s3c2410_dma_irq(int irq, void *devpw, struct pt_regs *regs)
        return IRQ_HANDLED;
 }
 
-
-
 /* s3c2410_request_dma
  *
  * get control of an dma channel
@@ -718,11 +764,17 @@ int s3c2410_dma_request(unsigned int channel, s3c2410_dma_client_t *client,
                pr_debug("dma%d: %s : requesting irq %d\n",
                         channel, __FUNCTION__, chan->irq);
 
+               chan->irq_claimed = 1;
+               local_irq_restore(flags);
+
                err = request_irq(chan->irq, s3c2410_dma_irq, IRQF_DISABLED,
                                  client->name, (void *)chan);
 
+               local_irq_save(flags);
+
                if (err) {
                        chan->in_use = 0;
+                       chan->irq_claimed = 0;
                        local_irq_restore(flags);
 
                        printk(KERN_ERR "%s: cannot get IRQ %d for DMA %d\n",
@@ -730,7 +782,6 @@ int s3c2410_dma_request(unsigned int channel, s3c2410_dma_client_t *client,
                        return err;
                }
 
-               chan->irq_claimed = 1;
                chan->irq_enabled = 1;
        }
 
@@ -810,6 +861,7 @@ static int s3c2410_dma_dostop(s3c2410_dma_chan_t *chan)
 
        tmp = dma_rdreg(chan, S3C2410_DMA_DMASKTRIG);
        tmp |= S3C2410_DMASKTRIG_STOP;
+       //tmp &= ~S3C2410_DMASKTRIG_ON;
        dma_wrreg(chan, S3C2410_DMA_DMASKTRIG, tmp);
 
 #if 0
@@ -819,6 +871,7 @@ static int s3c2410_dma_dostop(s3c2410_dma_chan_t *chan)
        dma_wrreg(chan, S3C2410_DMA_DCON, tmp);
 #endif
 
+       /* should stop do this, or should we wait for flush? */
        chan->state      = S3C2410_DMA_IDLE;
        chan->load_state = S3C2410_DMALOAD_NONE;
 
@@ -827,6 +880,22 @@ static int s3c2410_dma_dostop(s3c2410_dma_chan_t *chan)
        return 0;
 }
 
+void s3c2410_dma_waitforstop(s3c2410_dma_chan_t *chan)
+{
+       unsigned long tmp;
+       unsigned int timeout = 0x10000;
+
+       while (timeout-- > 0) {
+               tmp = dma_rdreg(chan, S3C2410_DMA_DMASKTRIG);
+
+               if (!(tmp & S3C2410_DMASKTRIG_ON))
+                       return;
+       }
+
+       pr_debug("dma%d: failed to stop?\n", chan->number);
+}
+
+
 /* s3c2410_dma_flush
  *
  * stop the channel, and remove all current and pending transfers
@@ -837,7 +906,9 @@ static int s3c2410_dma_flush(s3c2410_dma_chan_t *chan)
        s3c2410_dma_buf_t *buf, *next;
        unsigned long flags;
 
-       pr_debug("%s:\n", __FUNCTION__);
+       pr_debug("%s: chan %p (%d)\n", __FUNCTION__, chan, chan->number);
+
+       dbg_showchan(chan);
 
        local_irq_save(flags);
 
@@ -864,11 +935,64 @@ static int s3c2410_dma_flush(s3c2410_dma_chan_t *chan)
                }
        }
 
+       dbg_showregs(chan);
+
+       s3c2410_dma_waitforstop(chan);
+
+#if 0
+       /* should also clear interrupts, according to WinCE BSP */
+       {
+               unsigned long tmp;
+
+               tmp = dma_rdreg(chan, S3C2410_DMA_DCON);
+               tmp |= S3C2410_DCON_NORELOAD;
+               dma_wrreg(chan, S3C2410_DMA_DCON, tmp);
+       }
+#endif
+
+       dbg_showregs(chan);
+
        local_irq_restore(flags);
 
        return 0;
 }
 
+int
+s3c2410_dma_started(s3c2410_dma_chan_t *chan)
+{
+       unsigned long flags;
+
+       local_irq_save(flags);
+
+       dbg_showchan(chan);
+
+       /* if we've only loaded one buffer onto the channel, then chec
+        * to see if we have another, and if so, try and load it so when
+        * the first buffer is finished, the new one will be loaded onto
+        * the channel */
+
+       if (chan->next != NULL) {
+               if (chan->load_state == S3C2410_DMALOAD_1LOADED) {
+
+                       if (s3c2410_dma_waitforload(chan, __LINE__) == 0) {
+                               pr_debug("%s: buff not yet loaded, no more todo\n",
+                                        __FUNCTION__);
+                       } else {
+                               chan->load_state = S3C2410_DMALOAD_1RUNNING;
+                               s3c2410_dma_loadbuffer(chan, chan->next);
+                       }
+
+               } else if (chan->load_state == S3C2410_DMALOAD_1RUNNING) {
+                       s3c2410_dma_loadbuffer(chan, chan->next);
+               }
+       }
+
+
+       local_irq_restore(flags);
+
+       return 0;
+
+}
 
 int
 s3c2410_dma_ctrl(dmach_t channel, s3c2410_chan_op_t op)
@@ -885,14 +1009,15 @@ s3c2410_dma_ctrl(dmach_t channel, s3c2410_chan_op_t op)
                return s3c2410_dma_dostop(chan);
 
        case S3C2410_DMAOP_PAUSE:
-               return -ENOENT;
-
        case S3C2410_DMAOP_RESUME:
                return -ENOENT;
 
        case S3C2410_DMAOP_FLUSH:
                return s3c2410_dma_flush(chan);
 
+       case S3C2410_DMAOP_STARTED:
+               return s3c2410_dma_started(chan);
+
        case S3C2410_DMAOP_TIMEOUT:
                return 0;
 
index c4e3f8c..f2bbef0 100644 (file)
@@ -285,7 +285,7 @@ static struct flash_platform_data versatile_flash_data = {
 
 static struct resource versatile_flash_resource = {
        .start                  = VERSATILE_FLASH_BASE,
-       .end                    = VERSATILE_FLASH_BASE + VERSATILE_FLASH_SIZE,
+       .end                    = VERSATILE_FLASH_BASE + VERSATILE_FLASH_SIZE - 1,
        .flags                  = IORESOURCE_MEM,
 };
 
index f71fb4a..b2751ea 100644 (file)
@@ -142,6 +142,7 @@ config X86_SUMMIT
          In particular, it is needed for the x440.
 
          If you don't have one of these computers, you should say N here.
+         If you want to build a NUMA kernel, you must select ACPI.
 
 config X86_BIGSMP
        bool "Support for other sub-arch SMP systems with more than 8 CPUs"
@@ -169,6 +170,7 @@ config X86_GENERICARCH
        help
           This option compiles in the Summit, bigsmp, ES7000, default subarchitectures.
          It is intended for a generic binary kernel.
+         If you want a NUMA kernel, select ACPI.   We need SRAT for NUMA.
 
 config X86_ES7000
        bool "Support for Unisys ES7000 IA32 series"
@@ -542,7 +544,7 @@ config X86_PAE
 # Common NUMA Features
 config NUMA
        bool "Numa Memory Allocation and Scheduler Support"
-       depends on SMP && HIGHMEM64G && (X86_NUMAQ || X86_GENERICARCH || (X86_SUMMIT && ACPI))
+       depends on SMP && HIGHMEM64G && (X86_NUMAQ || (X86_SUMMIT || X86_GENERICARCH) && ACPI)
        default n if X86_PC
        default y if (X86_NUMAQ || X86_SUMMIT)
 
index 0db6387..ee003bc 100644 (file)
@@ -59,7 +59,7 @@ static inline int gsi_irq_sharing(int gsi) { return gsi; }
 
 #define BAD_MADT_ENTRY(entry, end) (                                       \
                (!entry) || (unsigned long)entry + sizeof(*entry) > end ||  \
-               ((acpi_table_entry_header *)entry)->length != sizeof(*entry))
+               ((acpi_table_entry_header *)entry)->length < sizeof(*entry))
 
 #define PREFIX                 "ACPI: "
 
index 9f408ee..b781b38 100644 (file)
@@ -292,7 +292,10 @@ ENTRY(do_suspend_lowlevel)
        pushl   $3
        call    acpi_enter_sleep_state
        addl    $4, %esp
-       ret
+
+#      In case of S3 failure, we'll emerge here.  Jump
+#      to ret_point to recover
+       jmp     ret_point
        .p2align 4,,7
 ret_point:
        call    restore_registers
index efb41e8..e6ea00e 100644 (file)
@@ -567,16 +567,11 @@ static struct cpufreq_driver acpi_cpufreq_driver = {
 static int __init
 acpi_cpufreq_init (void)
 {
-       int                     result = 0;
-
        dprintk("acpi_cpufreq_init\n");
 
-       result = acpi_cpufreq_early_init_acpi();
+       acpi_cpufreq_early_init_acpi();
 
-       if (!result)
-               result = cpufreq_register_driver(&acpi_cpufreq_driver);
-       
-       return (result);
+       return cpufreq_register_driver(&acpi_cpufreq_driver);
 }
 
 
index c7650a7..51087a9 100644 (file)
@@ -14,8 +14,12 @@ static __init int pci_access_init(void)
 #ifdef CONFIG_PCI_BIOS
        pci_pcbios_init();
 #endif
-       if (raw_pci_ops)
-               return 0;
+       /*
+        * don't check for raw_pci_ops here because we want pcbios as last
+        * fallback, yet it's needed to run first to set pcibios_last_bus
+        * in case legacy PCI probing is used. otherwise detecting peer busses
+        * fails.
+        */
 #ifdef CONFIG_PCI_DIRECT
        pci_direct_init();
 #endif
index e545b09..972180f 100644 (file)
@@ -178,7 +178,7 @@ static __init void unreachable_devices(void)
                                pci_exp_set_dev_base(addr, k, PCI_DEVFN(i, 0));
                        if (addr == 0 ||
                            readl((u32 __iomem *)mmcfg_virt_addr) != val1) {
-                               set_bit(i, fallback_slots);
+                               set_bit(i + 32*k, fallback_slots);
                                printk(KERN_NOTICE
                        "PCI: No mmconfig possible on %x:%x\n", k, i);
                        }
index 8a4f0d0..8f0a16a 100644 (file)
@@ -244,7 +244,8 @@ static void simscsi_fillresult(struct scsi_cmnd *sc, char *buf, unsigned len)
 
        if (scatterlen == 0)
                memcpy(sc->request_buffer, buf, len);
-       else for (slp = (struct scatterlist *)sc->request_buffer; scatterlen-- > 0 && len > 0; slp++) {
+       else for (slp = (struct scatterlist *)sc->request_buffer;
+                 scatterlen-- > 0 && len > 0; slp++) {
                unsigned thislen = min(len, slp->length);
 
                memcpy(page_address(slp->page) + slp->offset, buf, thislen);
index 99761b8..0176556 100644 (file)
@@ -55,7 +55,7 @@
 
 #define BAD_MADT_ENTRY(entry, end) (                                        \
                (!entry) || (unsigned long)entry + sizeof(*entry) > end ||  \
-               ((acpi_table_entry_header *)entry)->length != sizeof(*entry))
+               ((acpi_table_entry_header *)entry)->length < sizeof(*entry))
 
 #define PREFIX                 "ACPI: "
 
diff --git a/arch/powerpc/boot/dts/mpc8540ads.dts b/arch/powerpc/boot/dts/mpc8540ads.dts
new file mode 100644 (file)
index 0000000..5f41c1f
--- /dev/null
@@ -0,0 +1,257 @@
+/*
+ * MPC8540 ADS Device Tree Source
+ *
+ * Copyright 2006 Freescale Semiconductor Inc.
+ *
+ * This program is free software; you can redistribute  it and/or modify it
+ * under  the terms of  the GNU General  Public License as published by the
+ * Free Software Foundation;  either version 2 of the  License, or (at your
+ * option) any later version.
+ */
+
+
+/ {
+       model = "MPC8540ADS";
+       compatible = "MPC85xxADS";
+       #address-cells = <1>;
+       #size-cells = <1>;
+       linux,phandle = <100>;
+
+       cpus {
+               #cpus = <1>;
+               #address-cells = <1>;
+               #size-cells = <0>;
+               linux,phandle = <200>;
+
+               PowerPC,8540@0 {
+                       device_type = "cpu";
+                       reg = <0>;
+                       d-cache-line-size = <20>;       // 32 bytes
+                       i-cache-line-size = <20>;       // 32 bytes
+                       d-cache-size = <8000>;          // L1, 32K
+                       i-cache-size = <8000>;          // L1, 32K
+                       timebase-frequency = <0>;       //  33 MHz, from uboot
+                       bus-frequency = <0>;    // 166 MHz
+                       clock-frequency = <0>;  // 825 MHz, from uboot
+                       32-bit;
+                       linux,phandle = <201>;
+               };
+       };
+
+       memory {
+               device_type = "memory";
+               linux,phandle = <300>;
+               reg = <00000000 08000000>;      // 128M at 0x0
+       };
+
+       soc8540@e0000000 {
+               #address-cells = <1>;
+               #size-cells = <1>;
+               #interrupt-cells = <2>;
+               device_type = "soc";
+               ranges = <0 e0000000 00100000>;
+               reg = <e0000000 00100000>;      // CCSRBAR 1M
+               bus-frequency = <0>;
+
+               i2c@3000 {
+                       device_type = "i2c";
+                       compatible = "fsl-i2c";
+                       reg = <3000 100>;
+                       interrupts = <1b 2>;
+                       interrupt-parent = <40000>;
+                       dfsrr;
+               };
+
+               mdio@24520 {
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+                       device_type = "mdio";
+                       compatible = "gianfar";
+                       reg = <24520 20>;
+                       linux,phandle = <24520>;
+                       ethernet-phy@0 {
+                               linux,phandle = <2452000>;
+                               interrupt-parent = <40000>;
+                               interrupts = <35 1>;
+                               reg = <0>;
+                               device_type = "ethernet-phy";
+                       };
+                       ethernet-phy@1 {
+                               linux,phandle = <2452001>;
+                               interrupt-parent = <40000>;
+                               interrupts = <35 1>;
+                               reg = <1>;
+                               device_type = "ethernet-phy";
+                       };
+                       ethernet-phy@3 {
+                               linux,phandle = <2452003>;
+                               interrupt-parent = <40000>;
+                               interrupts = <37 1>;
+                               reg = <3>;
+                               device_type = "ethernet-phy";
+                       };
+               };
+
+               ethernet@24000 {
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+                       device_type = "network";
+                       model = "TSEC";
+                       compatible = "gianfar";
+                       reg = <24000 1000>;
+                       address = [ 00 E0 0C 00 73 00 ];
+                       local-mac-address = [ 00 E0 0C 00 73 00 ];
+                       interrupts = <d 2 e 2 12 2>;
+                       interrupt-parent = <40000>;
+                       phy-handle = <2452000>;
+               };
+
+               ethernet@25000 {
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+                       device_type = "network";
+                       model = "TSEC";
+                       compatible = "gianfar";
+                       reg = <25000 1000>;
+                       address = [ 00 E0 0C 00 73 01 ];
+                       local-mac-address = [ 00 E0 0C 00 73 01 ];
+                       interrupts = <13 2 14 2 18 2>;
+                       interrupt-parent = <40000>;
+                       phy-handle = <2452001>;
+               };
+
+               ethernet@26000 {
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+                       device_type = "network";
+                       model = "FEC";
+                       compatible = "gianfar";
+                       reg = <26000 1000>;
+                       address = [ 00 E0 0C 00 73 02 ];
+                       local-mac-address = [ 00 E0 0C 00 73 02 ];
+                       interrupts = <19 2>;
+                       interrupt-parent = <40000>;
+                       phy-handle = <2452003>;
+               };
+
+               serial@4500 {
+                       device_type = "serial";
+                       compatible = "ns16550";
+                       reg = <4500 100>;       // reg base, size
+                       clock-frequency = <0>;  // should we fill in in uboot?
+                       interrupts = <1a 2>;
+                       interrupt-parent = <40000>;
+               };
+
+               serial@4600 {
+                       device_type = "serial";
+                       compatible = "ns16550";
+                       reg = <4600 100>;       // reg base, size
+                       clock-frequency = <0>;  // should we fill in in uboot?
+                       interrupts = <1a 2>;
+                       interrupt-parent = <40000>;
+               };
+               pci@8000 {
+                       linux,phandle = <8000>;
+                       interrupt-map-mask = <f800 0 0 7>;
+                       interrupt-map = <
+
+                               /* IDSEL 0x02 */
+                               1000 0 0 1 40000 31 1
+                               1000 0 0 2 40000 32 1
+                               1000 0 0 3 40000 33 1
+                               1000 0 0 4 40000 34 1
+
+                               /* IDSEL 0x03 */
+                               1800 0 0 1 40000 34 1
+                               1800 0 0 2 40000 31 1
+                               1800 0 0 3 40000 32 1
+                               1800 0 0 4 40000 33 1
+
+                               /* IDSEL 0x04 */
+                               2000 0 0 1 40000 33 1
+                               2000 0 0 2 40000 34 1
+                               2000 0 0 3 40000 31 1
+                               2000 0 0 4 40000 32 1
+
+                               /* IDSEL 0x05 */
+                               2800 0 0 1 40000 32 1
+                               2800 0 0 2 40000 33 1
+                               2800 0 0 3 40000 34 1
+                               2800 0 0 4 40000 31 1
+
+                               /* IDSEL 0x0c */
+                               6000 0 0 1 40000 31 1
+                               6000 0 0 2 40000 32 1
+                               6000 0 0 3 40000 33 1
+                               6000 0 0 4 40000 34 1
+
+                               /* IDSEL 0x0d */
+                               6800 0 0 1 40000 34 1
+                               6800 0 0 2 40000 31 1
+                               6800 0 0 3 40000 32 1
+                               6800 0 0 4 40000 33 1
+
+                               /* IDSEL 0x0e */
+                               7000 0 0 1 40000 33 1
+                               7000 0 0 2 40000 34 1
+                               7000 0 0 3 40000 31 1
+                               7000 0 0 4 40000 32 1
+
+                               /* IDSEL 0x0f */
+                               7800 0 0 1 40000 32 1
+                               7800 0 0 2 40000 33 1
+                               7800 0 0 3 40000 34 1
+                               7800 0 0 4 40000 31 1
+
+                               /* IDSEL 0x12 */
+                               9000 0 0 1 40000 31 1
+                               9000 0 0 2 40000 32 1
+                               9000 0 0 3 40000 33 1
+                               9000 0 0 4 40000 34 1
+
+                               /* IDSEL 0x13 */
+                               9800 0 0 1 40000 34 1
+                               9800 0 0 2 40000 31 1
+                               9800 0 0 3 40000 32 1
+                               9800 0 0 4 40000 33 1
+
+                               /* IDSEL 0x14 */
+                               a000 0 0 1 40000 33 1
+                               a000 0 0 2 40000 34 1
+                               a000 0 0 3 40000 31 1
+                               a000 0 0 4 40000 32 1
+
+                               /* IDSEL 0x15 */
+                               a800 0 0 1 40000 32 1
+                               a800 0 0 2 40000 33 1
+                               a800 0 0 3 40000 34 1
+                               a800 0 0 4 40000 31 1>;
+                       interrupt-parent = <40000>;
+                       interrupts = <08 2>;
+                       bus-range = <0 0>;
+                       ranges = <02000000 0 80000000 80000000 0 20000000
+                                 01000000 0 00000000 e2000000 0 00100000>;
+                       clock-frequency = <3f940aa>;
+                       #interrupt-cells = <1>;
+                       #size-cells = <2>;
+                       #address-cells = <3>;
+                       reg = <8000 1000>;
+                       compatible = "85xx";
+                       device_type = "pci";
+               };
+
+               pic@40000 {
+                       linux,phandle = <40000>;
+                       clock-frequency = <0>;
+                       interrupt-controller;
+                       #address-cells = <0>;
+                       #interrupt-cells = <2>;
+                       reg = <40000 40000>;
+                       built-in;
+                       compatible = "chrp,open-pic";
+                       device_type = "open-pic";
+                       big-endian;
+               };
+       };
+};
diff --git a/arch/powerpc/boot/dts/mpc8541cds.dts b/arch/powerpc/boot/dts/mpc8541cds.dts
new file mode 100644 (file)
index 0000000..7be0bc6
--- /dev/null
@@ -0,0 +1,244 @@
+/*
+ * MPC8541 CDS Device Tree Source
+ *
+ * Copyright 2006 Freescale Semiconductor Inc.
+ *
+ * This program is free software; you can redistribute  it and/or modify it
+ * under  the terms of  the GNU General  Public License as published by the
+ * Free Software Foundation;  either version 2 of the  License, or (at your
+ * option) any later version.
+ */
+
+
+/ {
+       model = "MPC8541CDS";
+       compatible = "MPC85xxCDS";
+       #address-cells = <1>;
+       #size-cells = <1>;
+       linux,phandle = <100>;
+
+       cpus {
+               #cpus = <1>;
+               #address-cells = <1>;
+               #size-cells = <0>;
+               linux,phandle = <200>;
+
+               PowerPC,8541@0 {
+                       device_type = "cpu";
+                       reg = <0>;
+                       d-cache-line-size = <20>;       // 32 bytes
+                       i-cache-line-size = <20>;       // 32 bytes
+                       d-cache-size = <8000>;          // L1, 32K
+                       i-cache-size = <8000>;          // L1, 32K
+                       timebase-frequency = <0>;       //  33 MHz, from uboot
+                       bus-frequency = <0>;    // 166 MHz
+                       clock-frequency = <0>;  // 825 MHz, from uboot
+                       32-bit;
+                       linux,phandle = <201>;
+               };
+       };
+
+       memory {
+               device_type = "memory";
+               linux,phandle = <300>;
+               reg = <00000000 08000000>;      // 128M at 0x0
+       };
+
+       soc8541@e0000000 {
+               #address-cells = <1>;
+               #size-cells = <1>;
+               #interrupt-cells = <2>;
+               device_type = "soc";
+               ranges = <0 e0000000 00100000>;
+               reg = <e0000000 00100000>;      // CCSRBAR 1M
+               bus-frequency = <0>;
+
+               i2c@3000 {
+                       device_type = "i2c";
+                       compatible = "fsl-i2c";
+                       reg = <3000 100>;
+                       interrupts = <1b 2>;
+                       interrupt-parent = <40000>;
+                       dfsrr;
+               };
+
+               mdio@24520 {
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+                       device_type = "mdio";
+                       compatible = "gianfar";
+                       reg = <24520 20>;
+                       linux,phandle = <24520>;
+                       ethernet-phy@0 {
+                               linux,phandle = <2452000>;
+                               interrupt-parent = <40000>;
+                               interrupts = <35 0>;
+                               reg = <0>;
+                               device_type = "ethernet-phy";
+                       };
+                       ethernet-phy@1 {
+                               linux,phandle = <2452001>;
+                               interrupt-parent = <40000>;
+                               interrupts = <35 0>;
+                               reg = <1>;
+                               device_type = "ethernet-phy";
+                       };
+               };
+
+               ethernet@24000 {
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+                       device_type = "network";
+                       model = "TSEC";
+                       compatible = "gianfar";
+                       reg = <24000 1000>;
+                       local-mac-address = [ 00 E0 0C 00 73 00 ];
+                       interrupts = <d 2 e 2 12 2>;
+                       interrupt-parent = <40000>;
+                       phy-handle = <2452000>;
+               };
+
+               ethernet@25000 {
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+                       device_type = "network";
+                       model = "TSEC";
+                       compatible = "gianfar";
+                       reg = <25000 1000>;
+                       local-mac-address = [ 00 E0 0C 00 73 01 ];
+                       interrupts = <13 2 14 2 18 2>;
+                       interrupt-parent = <40000>;
+                       phy-handle = <2452001>;
+               };
+
+               serial@4500 {
+                       device_type = "serial";
+                       compatible = "ns16550";
+                       reg = <4500 100>;       // reg base, size
+                       clock-frequency = <0>;  // should we fill in in uboot?
+                       interrupts = <1a 2>;
+                       interrupt-parent = <40000>;
+               };
+
+               serial@4600 {
+                       device_type = "serial";
+                       compatible = "ns16550";
+                       reg = <4600 100>;       // reg base, size
+                       clock-frequency = <0>;  // should we fill in in uboot?
+                       interrupts = <1a 2>;
+                       interrupt-parent = <40000>;
+               };
+
+               pci@8000 {
+                       linux,phandle = <8000>;
+                       interrupt-map-mask = <1f800 0 0 7>;
+                       interrupt-map = <
+
+                               /* IDSEL 0x10 */
+                               08000 0 0 1 40000 30 1
+                               08000 0 0 2 40000 31 1
+                               08000 0 0 3 40000 32 1
+                               08000 0 0 4 40000 33 1
+
+                               /* IDSEL 0x11 */
+                               08800 0 0 1 40000 30 1
+                               08800 0 0 2 40000 31 1
+                               08800 0 0 3 40000 32 1
+                               08800 0 0 4 40000 33 1
+
+                               /* IDSEL 0x12 (Slot 1) */
+                               09000 0 0 1 40000 30 1
+                               09000 0 0 2 40000 31 1
+                               09000 0 0 3 40000 32 1
+                               09000 0 0 4 40000 33 1
+
+                               /* IDSEL 0x13 (Slot 2) */
+                               09800 0 0 1 40000 31 1
+                               09800 0 0 2 40000 32 1
+                               09800 0 0 3 40000 33 1
+                               09800 0 0 4 40000 30 1
+
+                               /* IDSEL 0x14 (Slot 3) */
+                               0a000 0 0 1 40000 32 1
+                               0a000 0 0 2 40000 33 1
+                               0a000 0 0 3 40000 30 1
+                               0a000 0 0 4 40000 31 1
+
+                               /* IDSEL 0x15 (Slot 4) */
+                               0a800 0 0 1 40000 33 1
+                               0a800 0 0 2 40000 30 1
+                               0a800 0 0 3 40000 31 1
+                               0a800 0 0 4 40000 32 1
+
+                               /* Bus 1 (Tundra Bridge) */
+                               /* IDSEL 0x12 (ISA bridge) */
+                               19000 0 0 1 40000 30 1
+                               19000 0 0 2 40000 31 1
+                               19000 0 0 3 40000 32 1
+                               19000 0 0 4 40000 33 1>;
+                       interrupt-parent = <40000>;
+                       interrupts = <08 2>;
+                       bus-range = <0 0>;
+                       ranges = <02000000 0 80000000 80000000 0 20000000
+                                 01000000 0 00000000 e2000000 0 00100000>;
+                       clock-frequency = <3f940aa>;
+                       #interrupt-cells = <1>;
+                       #size-cells = <2>;
+                       #address-cells = <3>;
+                       reg = <8000 1000>;
+                       compatible = "85xx";
+                       device_type = "pci";
+
+                       i8259@19000 {
+                               clock-frequency = <0>;
+                               interrupt-controller;
+                               device_type = "interrupt-controller";
+                               reg = <19000 0 0 0 1>;
+                               #address-cells = <0>;
+                               #interrupt-cells = <2>;
+                               built-in;
+                               compatible = "chrp,iic";
+                               big-endian;
+                               interrupts = <1>;
+                               interrupt-parent = <8000>;
+                       };
+               };
+
+               pci@9000 {
+                       linux,phandle = <9000>;
+                       interrupt-map-mask = <f800 0 0 7>;
+                       interrupt-map = <
+
+                               /* IDSEL 0x15 */
+                               a800 0 0 1 40000 3b 1
+                               a800 0 0 2 40000 3b 1
+                               a800 0 0 3 40000 3b 1
+                               a800 0 0 4 40000 3b 1>;
+                       interrupt-parent = <40000>;
+                       interrupts = <09 2>;
+                       bus-range = <0 0>;
+                       ranges = <02000000 0 a0000000 a0000000 0 20000000
+                                 01000000 0 00000000 e3000000 0 00100000>;
+                       clock-frequency = <3f940aa>;
+                       #interrupt-cells = <1>;
+                       #size-cells = <2>;
+                       #address-cells = <3>;
+                       reg = <9000 1000>;
+                       compatible = "85xx";
+                       device_type = "pci";
+               };
+
+               pic@40000 {
+                       linux,phandle = <40000>;
+                       clock-frequency = <0>;
+                       interrupt-controller;
+                       #address-cells = <0>;
+                       #interrupt-cells = <2>;
+                       reg = <40000 40000>;
+                       built-in;
+                       compatible = "chrp,open-pic";
+                       device_type = "open-pic";
+                        big-endian;
+               };
+       };
+};
diff --git a/arch/powerpc/boot/dts/mpc8548cds.dts b/arch/powerpc/boot/dts/mpc8548cds.dts
new file mode 100644 (file)
index 0000000..893d795
--- /dev/null
@@ -0,0 +1,287 @@
+/*
+ * MPC8555 CDS Device Tree Source
+ *
+ * Copyright 2006 Freescale Semiconductor Inc.
+ *
+ * This program is free software; you can redistribute  it and/or modify it
+ * under  the terms of  the GNU General  Public License as published by the
+ * Free Software Foundation;  either version 2 of the  License, or (at your
+ * option) any later version.
+ */
+
+
+/ {
+       model = "MPC8548CDS";
+       compatible = "MPC85xxCDS";
+       #address-cells = <1>;
+       #size-cells = <1>;
+       linux,phandle = <100>;
+
+       cpus {
+               #cpus = <1>;
+               #address-cells = <1>;
+               #size-cells = <0>;
+               linux,phandle = <200>;
+
+               PowerPC,8548@0 {
+                       device_type = "cpu";
+                       reg = <0>;
+                       d-cache-line-size = <20>;       // 32 bytes
+                       i-cache-line-size = <20>;       // 32 bytes
+                       d-cache-size = <8000>;          // L1, 32K
+                       i-cache-size = <8000>;          // L1, 32K
+                       timebase-frequency = <0>;       //  33 MHz, from uboot
+                       bus-frequency = <0>;    // 166 MHz
+                       clock-frequency = <0>;  // 825 MHz, from uboot
+                       32-bit;
+                       linux,phandle = <201>;
+               };
+       };
+
+       memory {
+               device_type = "memory";
+               linux,phandle = <300>;
+               reg = <00000000 08000000>;      // 128M at 0x0
+       };
+
+       soc8548@e0000000 {
+               #address-cells = <1>;
+               #size-cells = <1>;
+               #interrupt-cells = <2>;
+               device_type = "soc";
+               ranges = <0 e0000000 00100000>;
+               reg = <e0000000 00100000>;      // CCSRBAR 1M
+               bus-frequency = <0>;
+
+               i2c@3000 {
+                       device_type = "i2c";
+                       compatible = "fsl-i2c";
+                       reg = <3000 100>;
+                       interrupts = <1b 2>;
+                       interrupt-parent = <40000>;
+                       dfsrr;
+               };
+
+               mdio@24520 {
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+                       device_type = "mdio";
+                       compatible = "gianfar";
+                       reg = <24520 20>;
+                       linux,phandle = <24520>;
+                       ethernet-phy@0 {
+                               linux,phandle = <2452000>;
+                               interrupt-parent = <40000>;
+                               interrupts = <35 0>;
+                               reg = <0>;
+                               device_type = "ethernet-phy";
+                       };
+                       ethernet-phy@1 {
+                               linux,phandle = <2452001>;
+                               interrupt-parent = <40000>;
+                               interrupts = <35 0>;
+                               reg = <1>;
+                               device_type = "ethernet-phy";
+                       };
+
+                       ethernet-phy@2 {
+                               linux,phandle = <2452002>;
+                               interrupt-parent = <40000>;
+                               interrupts = <35 0>;
+                               reg = <2>;
+                               device_type = "ethernet-phy";
+                       };
+                       ethernet-phy@3 {
+                               linux,phandle = <2452003>;
+                               interrupt-parent = <40000>;
+                               interrupts = <35 0>;
+                               reg = <3>;
+                               device_type = "ethernet-phy";
+                       };
+               };
+
+               ethernet@24000 {
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+                       device_type = "network";
+                       model = "eTSEC";
+                       compatible = "gianfar";
+                       reg = <24000 1000>;
+                       local-mac-address = [ 00 E0 0C 00 73 00 ];
+                       interrupts = <d 2 e 2 12 2>;
+                       interrupt-parent = <40000>;
+                       phy-handle = <2452000>;
+               };
+
+               ethernet@25000 {
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+                       device_type = "network";
+                       model = "eTSEC";
+                       compatible = "gianfar";
+                       reg = <25000 1000>;
+                       local-mac-address = [ 00 E0 0C 00 73 01 ];
+                       interrupts = <13 2 14 2 18 2>;
+                       interrupt-parent = <40000>;
+                       phy-handle = <2452001>;
+               };
+
+               ethernet@26000 {
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+                       device_type = "network";
+                       model = "eTSEC";
+                       compatible = "gianfar";
+                       reg = <26000 1000>;
+                       local-mac-address = [ 00 E0 0C 00 73 02 ];
+                       interrupts = <f 2 10 2 11 2>;
+                       interrupt-parent = <40000>;
+                       phy-handle = <2452001>;
+               };
+
+/* eTSEC 4 is currently broken
+               ethernet@27000 {
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+                       device_type = "network";
+                       model = "eTSEC";
+                       compatible = "gianfar";
+                       reg = <27000 1000>;
+                       local-mac-address = [ 00 E0 0C 00 73 03 ];
+                       interrupts = <15 2 16 2 17 2>;
+                       interrupt-parent = <40000>;
+                       phy-handle = <2452001>;
+               };
+ */
+
+               serial@4500 {
+                       device_type = "serial";
+                       compatible = "ns16550";
+                       reg = <4500 100>;       // reg base, size
+                       clock-frequency = <0>;  // should we fill in in uboot?
+                       interrupts = <1a 2>;
+                       interrupt-parent = <40000>;
+               };
+
+               serial@4600 {
+                       device_type = "serial";
+                       compatible = "ns16550";
+                       reg = <4600 100>;       // reg base, size
+                       clock-frequency = <0>;  // should we fill in in uboot?
+                       interrupts = <1a 2>;
+                       interrupt-parent = <40000>;
+               };
+
+               pci@8000 {
+                       linux,phandle = <8000>;
+                       interrupt-map-mask = <1f800 0 0 7>;
+                       interrupt-map = <
+
+                               /* IDSEL 0x10 */
+                               08000 0 0 1 40000 30 1
+                               08000 0 0 2 40000 31 1
+                               08000 0 0 3 40000 32 1
+                               08000 0 0 4 40000 33 1
+
+                               /* IDSEL 0x11 */
+                               08800 0 0 1 40000 30 1
+                               08800 0 0 2 40000 31 1
+                               08800 0 0 3 40000 32 1
+                               08800 0 0 4 40000 33 1
+
+                               /* IDSEL 0x12 (Slot 1) */
+                               09000 0 0 1 40000 30 1
+                               09000 0 0 2 40000 31 1
+                               09000 0 0 3 40000 32 1
+                               09000 0 0 4 40000 33 1
+
+                               /* IDSEL 0x13 (Slot 2) */
+                               09800 0 0 1 40000 31 1
+                               09800 0 0 2 40000 32 1
+                               09800 0 0 3 40000 33 1
+                               09800 0 0 4 40000 30 1
+
+                               /* IDSEL 0x14 (Slot 3) */
+                               0a000 0 0 1 40000 32 1
+                               0a000 0 0 2 40000 33 1
+                               0a000 0 0 3 40000 30 1
+                               0a000 0 0 4 40000 31 1
+
+                               /* IDSEL 0x15 (Slot 4) */
+                               0a800 0 0 1 40000 33 1
+                               0a800 0 0 2 40000 30 1
+                               0a800 0 0 3 40000 31 1
+                               0a800 0 0 4 40000 32 1
+
+                               /* Bus 1 (Tundra Bridge) */
+                               /* IDSEL 0x12 (ISA bridge) */
+                               19000 0 0 1 40000 30 1
+                               19000 0 0 2 40000 31 1
+                               19000 0 0 3 40000 32 1
+                               19000 0 0 4 40000 33 1>;
+                       interrupt-parent = <40000>;
+                       interrupts = <08 2>;
+                       bus-range = <0 0>;
+                       ranges = <02000000 0 80000000 80000000 0 20000000
+                                 01000000 0 00000000 e2000000 0 00100000>;
+                       clock-frequency = <3f940aa>;
+                       #interrupt-cells = <1>;
+                       #size-cells = <2>;
+                       #address-cells = <3>;
+                       reg = <8000 1000>;
+                       compatible = "85xx";
+                       device_type = "pci";
+
+                       i8259@19000 {
+                               clock-frequency = <0>;
+                               interrupt-controller;
+                               device_type = "interrupt-controller";
+                               reg = <19000 0 0 0 1>;
+                               #address-cells = <0>;
+                               #interrupt-cells = <2>;
+                               built-in;
+                               compatible = "chrp,iic";
+                               big-endian;
+                               interrupts = <1>;
+                               interrupt-parent = <8000>;
+                       };
+               };
+
+               pci@9000 {
+                       linux,phandle = <9000>;
+                       interrupt-map-mask = <f800 0 0 7>;
+                       interrupt-map = <
+
+                               /* IDSEL 0x15 */
+                               a800 0 0 1 40000 3b 1
+                               a800 0 0 2 40000 3b 1
+                               a800 0 0 3 40000 3b 1
+                               a800 0 0 4 40000 3b 1>;
+                       interrupt-parent = <40000>;
+                       interrupts = <09 2>;
+                       bus-range = <0 0>;
+                       ranges = <02000000 0 a0000000 a0000000 0 20000000
+                                 01000000 0 00000000 e3000000 0 00100000>;
+                       clock-frequency = <3f940aa>;
+                       #interrupt-cells = <1>;
+                       #size-cells = <2>;
+                       #address-cells = <3>;
+                       reg = <9000 1000>;
+                       compatible = "85xx";
+                       device_type = "pci";
+               };
+
+               pic@40000 {
+                       linux,phandle = <40000>;
+                       clock-frequency = <0>;
+                       interrupt-controller;
+                       #address-cells = <0>;
+                       #interrupt-cells = <2>;
+                       reg = <40000 40000>;
+                       built-in;
+                       compatible = "chrp,open-pic";
+                       device_type = "open-pic";
+                        big-endian;
+               };
+       };
+};
diff --git a/arch/powerpc/boot/dts/mpc8555cds.dts b/arch/powerpc/boot/dts/mpc8555cds.dts
new file mode 100644 (file)
index 0000000..118f5a8
--- /dev/null
@@ -0,0 +1,244 @@
+/*
+ * MPC8555 CDS Device Tree Source
+ *
+ * Copyright 2006 Freescale Semiconductor Inc.
+ *
+ * This program is free software; you can redistribute  it and/or modify it
+ * under  the terms of  the GNU General  Public License as published by the
+ * Free Software Foundation;  either version 2 of the  License, or (at your
+ * option) any later version.
+ */
+
+
+/ {
+       model = "MPC8555CDS";
+       compatible = "MPC85xxCDS";
+       #address-cells = <1>;
+       #size-cells = <1>;
+       linux,phandle = <100>;
+
+       cpus {
+               #cpus = <1>;
+               #address-cells = <1>;
+               #size-cells = <0>;
+               linux,phandle = <200>;
+
+               PowerPC,8555@0 {
+                       device_type = "cpu";
+                       reg = <0>;
+                       d-cache-line-size = <20>;       // 32 bytes
+                       i-cache-line-size = <20>;       // 32 bytes
+                       d-cache-size = <8000>;          // L1, 32K
+                       i-cache-size = <8000>;          // L1, 32K
+                       timebase-frequency = <0>;       //  33 MHz, from uboot
+                       bus-frequency = <0>;    // 166 MHz
+                       clock-frequency = <0>;  // 825 MHz, from uboot
+                       32-bit;
+                       linux,phandle = <201>;
+               };
+       };
+
+       memory {
+               device_type = "memory";
+               linux,phandle = <300>;
+               reg = <00000000 08000000>;      // 128M at 0x0
+       };
+
+       soc8555@e0000000 {
+               #address-cells = <1>;
+               #size-cells = <1>;
+               #interrupt-cells = <2>;
+               device_type = "soc";
+               ranges = <0 e0000000 00100000>;
+               reg = <e0000000 00100000>;      // CCSRBAR 1M
+               bus-frequency = <0>;
+
+               i2c@3000 {
+                       device_type = "i2c";
+                       compatible = "fsl-i2c";
+                       reg = <3000 100>;
+                       interrupts = <1b 2>;
+                       interrupt-parent = <40000>;
+                       dfsrr;
+               };
+
+               mdio@24520 {
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+                       device_type = "mdio";
+                       compatible = "gianfar";
+                       reg = <24520 20>;
+                       linux,phandle = <24520>;
+                       ethernet-phy@0 {
+                               linux,phandle = <2452000>;
+                               interrupt-parent = <40000>;
+                               interrupts = <35 0>;
+                               reg = <0>;
+                               device_type = "ethernet-phy";
+                       };
+                       ethernet-phy@1 {
+                               linux,phandle = <2452001>;
+                               interrupt-parent = <40000>;
+                               interrupts = <35 0>;
+                               reg = <1>;
+                               device_type = "ethernet-phy";
+                       };
+               };
+
+               ethernet@24000 {
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+                       device_type = "network";
+                       model = "TSEC";
+                       compatible = "gianfar";
+                       reg = <24000 1000>;
+                       local-mac-address = [ 00 E0 0C 00 73 00 ];
+                       interrupts = <0d 2 0e 2 12 2>;
+                       interrupt-parent = <40000>;
+                       phy-handle = <2452000>;
+               };
+
+               ethernet@25000 {
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+                       device_type = "network";
+                       model = "TSEC";
+                       compatible = "gianfar";
+                       reg = <25000 1000>;
+                       local-mac-address = [ 00 E0 0C 00 73 01 ];
+                       interrupts = <13 2 14 2 18 2>;
+                       interrupt-parent = <40000>;
+                       phy-handle = <2452001>;
+               };
+
+               serial@4500 {
+                       device_type = "serial";
+                       compatible = "ns16550";
+                       reg = <4500 100>;       // reg base, size
+                       clock-frequency = <0>;  // should we fill in in uboot?
+                       interrupts = <1a 2>;
+                       interrupt-parent = <40000>;
+               };
+
+               serial@4600 {
+                       device_type = "serial";
+                       compatible = "ns16550";
+                       reg = <4600 100>;       // reg base, size
+                       clock-frequency = <0>;  // should we fill in in uboot?
+                       interrupts = <1a 2>;
+                       interrupt-parent = <40000>;
+               };
+
+               pci@8000 {
+                       linux,phandle = <8000>;
+                       interrupt-map-mask = <1f800 0 0 7>;
+                       interrupt-map = <
+
+                               /* IDSEL 0x10 */
+                               08000 0 0 1 40000 30 1
+                               08000 0 0 2 40000 31 1
+                               08000 0 0 3 40000 32 1
+                               08000 0 0 4 40000 33 1
+
+                               /* IDSEL 0x11 */
+                               08800 0 0 1 40000 30 1
+                               08800 0 0 2 40000 31 1
+                               08800 0 0 3 40000 32 1
+                               08800 0 0 4 40000 33 1
+
+                               /* IDSEL 0x12 (Slot 1) */
+                               09000 0 0 1 40000 30 1
+                               09000 0 0 2 40000 31 1
+                               09000 0 0 3 40000 32 1
+                               09000 0 0 4 40000 33 1
+
+                               /* IDSEL 0x13 (Slot 2) */
+                               09800 0 0 1 40000 31 1
+                               09800 0 0 2 40000 32 1
+                               09800 0 0 3 40000 33 1
+                               09800 0 0 4 40000 30 1
+
+                               /* IDSEL 0x14 (Slot 3) */
+                               0a000 0 0 1 40000 32 1
+                               0a000 0 0 2 40000 33 1
+                               0a000 0 0 3 40000 30 1
+                               0a000 0 0 4 40000 31 1
+
+                               /* IDSEL 0x15 (Slot 4) */
+                               0a800 0 0 1 40000 33 1
+                               0a800 0 0 2 40000 30 1
+                               0a800 0 0 3 40000 31 1
+                               0a800 0 0 4 40000 32 1
+
+                               /* Bus 1 (Tundra Bridge) */
+                               /* IDSEL 0x12 (ISA bridge) */
+                               19000 0 0 1 40000 30 1
+                               19000 0 0 2 40000 31 1
+                               19000 0 0 3 40000 32 1
+                               19000 0 0 4 40000 33 1>;
+                       interrupt-parent = <40000>;
+                       interrupts = <08 2>;
+                       bus-range = <0 0>;
+                       ranges = <02000000 0 80000000 80000000 0 20000000
+                                 01000000 0 00000000 e2000000 0 00100000>;
+                       clock-frequency = <3f940aa>;
+                       #interrupt-cells = <1>;
+                       #size-cells = <2>;
+                       #address-cells = <3>;
+                       reg = <8000 1000>;
+                       compatible = "85xx";
+                       device_type = "pci";
+
+                       i8259@19000 {
+                               clock-frequency = <0>;
+                               interrupt-controller;
+                               device_type = "interrupt-controller";
+                               reg = <19000 0 0 0 1>;
+                               #address-cells = <0>;
+                               #interrupt-cells = <2>;
+                               built-in;
+                               compatible = "chrp,iic";
+                               big-endian;
+                               interrupts = <1>;
+                               interrupt-parent = <8000>;
+                       };
+               };
+
+               pci@9000 {
+                       linux,phandle = <9000>;
+                       interrupt-map-mask = <f800 0 0 7>;
+                       interrupt-map = <
+
+                               /* IDSEL 0x15 */
+                               a800 0 0 1 40000 3b 1
+                               a800 0 0 2 40000 3b 1
+                               a800 0 0 3 40000 3b 1
+                               a800 0 0 4 40000 3b 1>;
+                       interrupt-parent = <40000>;
+                       interrupts = <09 2>;
+                       bus-range = <0 0>;
+                       ranges = <02000000 0 a0000000 a0000000 0 20000000
+                                 01000000 0 00000000 e3000000 0 00100000>;
+                       clock-frequency = <3f940aa>;
+                       #interrupt-cells = <1>;
+                       #size-cells = <2>;
+                       #address-cells = <3>;
+                       reg = <9000 1000>;
+                       compatible = "85xx";
+                       device_type = "pci";
+               };
+
+               pic@40000 {
+                       linux,phandle = <40000>;
+                       clock-frequency = <0>;
+                       interrupt-controller;
+                       #address-cells = <0>;
+                       #interrupt-cells = <2>;
+                       reg = <40000 40000>;
+                       built-in;
+                       compatible = "chrp,open-pic";
+                       device_type = "open-pic";
+                        big-endian;
+               };
+       };
+};
index 359ab89..40a3929 100644 (file)
@@ -115,6 +115,7 @@ static int __init add_legacy_soc_port(struct device_node *np,
        u64 addr;
        u32 *addrp;
        upf_t flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST | UPF_SHARE_IRQ;
+       struct device_node *tsi = of_get_parent(np);
 
        /* We only support ports that have a clock frequency properly
         * encoded in the device-tree.
@@ -134,7 +135,10 @@ static int __init add_legacy_soc_port(struct device_node *np,
        /* Add port, irq will be dealt with later. We passed a translated
         * IO port value. It will be fixed up later along with the irq
         */
-       return add_legacy_port(np, -1, UPIO_MEM, addr, addr, NO_IRQ, flags, 0);
+       if (tsi && !strcmp(tsi->type, "tsi-bridge"))
+               return add_legacy_port(np, -1, UPIO_TSI, addr, addr, NO_IRQ, flags, 0);
+       else
+               return add_legacy_port(np, -1, UPIO_MEM, addr, addr, NO_IRQ, flags, 0);
 }
 
 static int __init add_legacy_isa_port(struct device_node *np,
@@ -464,7 +468,7 @@ static int __init serial_dev_init(void)
                        fixup_port_irq(i, np, port);
                if (port->iotype == UPIO_PORT)
                        fixup_port_pio(i, np, port);
-               if (port->iotype == UPIO_MEM)
+               if ((port->iotype == UPIO_MEM) || (port->iotype == UPIO_TSI))
                        fixup_port_mmio(i, np, port);
        }
 
index 6a7e997..11052c2 100644 (file)
@@ -598,11 +598,6 @@ static struct device_node *of_irq_find_parent(struct device_node *child)
        return p;
 }
 
-static u8 of_irq_pci_swizzle(u8 slot, u8 pin)
-{
-       return (((pin - 1) + slot) % 4) + 1;
-}
-
 /* This doesn't need to be called if you don't have any special workaround
  * flags to pass
  */
@@ -891,6 +886,12 @@ int of_irq_map_one(struct device_node *device, int index, struct of_irq *out_irq
 }
 EXPORT_SYMBOL_GPL(of_irq_map_one);
 
+#ifdef CONFIG_PCI
+static u8 of_irq_pci_swizzle(u8 slot, u8 pin)
+{
+       return (((pin - 1) + slot) % 4) + 1;
+}
+
 int of_irq_map_pci(struct pci_dev *pdev, struct of_irq *out_irq)
 {
        struct device_node *dn, *ppnode;
@@ -967,4 +968,4 @@ int of_irq_map_pci(struct pci_dev *pdev, struct of_irq *out_irq)
        return of_irq_map_raw(ppnode, &lspec, laddr, out_irq);
 }
 EXPORT_SYMBOL_GPL(of_irq_map_pci);
-
+#endif /* CONFIG_PCI */
index 774c0a3..18e59e4 100644 (file)
@@ -417,7 +417,7 @@ static __inline__ void timer_check_rtc(void)
 /*
  * This version of gettimeofday has microsecond resolution.
  */
-static inline void __do_gettimeofday(struct timeval *tv, u64 tb_val)
+static inline void __do_gettimeofday(struct timeval *tv)
 {
        unsigned long sec, usec;
        u64 tb_ticks, xsec;
@@ -431,7 +431,12 @@ static inline void __do_gettimeofday(struct timeval *tv, u64 tb_val)
         * without a divide (and in fact, without a multiply)
         */
        temp_varp = do_gtod.varp;
-       tb_ticks = tb_val - temp_varp->tb_orig_stamp;
+
+       /* Sampling the time base must be done after loading
+        * do_gtod.varp in order to avoid racing with update_gtod.
+        */
+       data_barrier(temp_varp);
+       tb_ticks = get_tb() - temp_varp->tb_orig_stamp;
        temp_tb_to_xs = temp_varp->tb_to_xs;
        temp_stamp_xsec = temp_varp->stamp_xsec;
        xsec = temp_stamp_xsec + mulhdu(tb_ticks, temp_tb_to_xs);
@@ -464,7 +469,7 @@ void do_gettimeofday(struct timeval *tv)
                tv->tv_usec = usec;
                return;
        }
-       __do_gettimeofday(tv, get_tb());
+       __do_gettimeofday(tv);
 }
 
 EXPORT_SYMBOL(do_gettimeofday);
@@ -650,6 +655,7 @@ void timer_interrupt(struct pt_regs * regs)
        int next_dec;
        int cpu = smp_processor_id();
        unsigned long ticks;
+       u64 tb_next_jiffy;
 
 #ifdef CONFIG_PPC32
        if (atomic_read(&ppc_n_lost_interrupts) != 0)
@@ -691,11 +697,14 @@ void timer_interrupt(struct pt_regs * regs)
                        continue;
 
                write_seqlock(&xtime_lock);
-               tb_last_jiffy += tb_ticks_per_jiffy;
-               tb_last_stamp = per_cpu(last_jiffy, cpu);
-               do_timer(regs);
-               timer_recalc_offset(tb_last_jiffy);
-               timer_check_rtc();
+               tb_next_jiffy = tb_last_jiffy + tb_ticks_per_jiffy;
+               if (per_cpu(last_jiffy, cpu) >= tb_next_jiffy) {
+                       tb_last_jiffy = tb_next_jiffy;
+                       tb_last_stamp = per_cpu(last_jiffy, cpu);
+                       do_timer(regs);
+                       timer_recalc_offset(tb_last_jiffy);
+                       timer_check_rtc();
+               }
                write_sequnlock(&xtime_lock);
        }
        
index e4d1713..9b352bd 100644 (file)
@@ -585,14 +585,14 @@ static void parse_fpe(struct pt_regs *regs)
 #define INST_MFSPR_PVR_MASK    0xfc1fffff
 
 #define INST_DCBA              0x7c0005ec
-#define INST_DCBA_MASK         0x7c0007fe
+#define INST_DCBA_MASK         0xfc0007fe
 
 #define INST_MCRXR             0x7c000400
-#define INST_MCRXR_MASK                0x7c0007fe
+#define INST_MCRXR_MASK                0xfc0007fe
 
 #define INST_STRING            0x7c00042a
-#define INST_STRING_MASK       0x7c0007fe
-#define INST_STRING_GEN_MASK   0x7c00067e
+#define INST_STRING_MASK       0xfc0007fe
+#define INST_STRING_GEN_MASK   0xfc00067e
 #define INST_LSWI              0x7c0004aa
 #define INST_LSWX              0x7c00042a
 #define INST_STSWI             0x7c0005aa
index 266b8b2..5615acc 100644 (file)
@@ -153,7 +153,7 @@ static void free_hugepte_range(struct mmu_gather *tlb, hugepd_t *hpdp)
        hpdp->pd = 0;
        tlb->need_flush = 1;
        pgtable_free_tlb(tlb, pgtable_free_cache(hugepte, HUGEPTE_CACHE_NUM,
-                                                HUGEPTE_TABLE_SIZE-1));
+                                                PGF_CACHENUM_MASK));
 }
 
 #ifdef CONFIG_PPC_64K_PAGES
index 454fc53..c3268d9 100644 (file)
@@ -14,7 +14,6 @@ config MPC8540_ADS
 config MPC85xx_CDS
        bool "Freescale MPC85xx CDS"
        select DEFAULT_UIMAGE
-       select PPC_I8259 if PCI
        help
          This option enables support for the MPC85xx CDS board
 
index 06a4976..9d2acfb 100644 (file)
@@ -37,79 +37,7 @@ unsigned long isa_io_base = 0;
 unsigned long isa_mem_base = 0;
 #endif
 
-/*
- * Internal interrupts are all Level Sensitive, and Positive Polarity
- *
- * Note:  Likely, this table and the following function should be
- *        obtained and derived from the OF Device Tree.
- */
-static u_char mpc85xx_ads_openpic_initsenses[] __initdata = {
-       MPC85XX_INTERNAL_IRQ_SENSES,
-       0x0,                    /* External  0: */
-#if defined(CONFIG_PCI)
-       (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE),      /* Ext 1: PCI slot 0 */
-       (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE),      /* Ext 2: PCI slot 1 */
-       (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE),      /* Ext 3: PCI slot 2 */
-       (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE),      /* Ext 4: PCI slot 3 */
-#else
-       0x0,                    /* External  1: */
-       0x0,                    /* External  2: */
-       0x0,                    /* External  3: */
-       0x0,                    /* External  4: */
-#endif
-       (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE),      /* External 5: PHY */
-       0x0,                    /* External  6: */
-       (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE),      /* External 7: PHY */
-       0x0,                    /* External  8: */
-       0x0,                    /* External  9: */
-       0x0,                    /* External 10: */
-       0x0,                    /* External 11: */
-};
-
 #ifdef CONFIG_PCI
-/*
- * interrupt routing
- */
-
-int
-mpc85xx_map_irq(struct pci_dev *dev, unsigned char idsel, unsigned char pin)
-{
-       static char pci_irq_table[][4] =
-           /*
-            * This is little evil, but works around the fact
-            * that revA boards have IDSEL starting at 18
-            * and others boards (older) start at 12
-            *
-            *      PCI IDSEL/INTPIN->INTLINE
-            *       A      B      C      D
-            */
-       {
-               {PIRQA, PIRQB, PIRQC, PIRQD},   /* IDSEL 2 */
-               {PIRQD, PIRQA, PIRQB, PIRQC},
-               {PIRQC, PIRQD, PIRQA, PIRQB},
-               {PIRQB, PIRQC, PIRQD, PIRQA},   /* IDSEL 5 */
-               {0, 0, 0, 0},   /* -- */
-               {0, 0, 0, 0},   /* -- */
-               {0, 0, 0, 0},   /* -- */
-               {0, 0, 0, 0},   /* -- */
-               {0, 0, 0, 0},   /* -- */
-               {0, 0, 0, 0},   /* -- */
-               {PIRQA, PIRQB, PIRQC, PIRQD},   /* IDSEL 12 */
-               {PIRQD, PIRQA, PIRQB, PIRQC},
-               {PIRQC, PIRQD, PIRQA, PIRQB},
-               {PIRQB, PIRQC, PIRQD, PIRQA},   /* IDSEL 15 */
-               {0, 0, 0, 0},   /* -- */
-               {0, 0, 0, 0},   /* -- */
-               {PIRQA, PIRQB, PIRQC, PIRQD},   /* IDSEL 18 */
-               {PIRQD, PIRQA, PIRQB, PIRQC},
-               {PIRQC, PIRQD, PIRQA, PIRQB},
-               {PIRQB, PIRQC, PIRQD, PIRQA},   /* IDSEL 21 */
-       };
-
-       const long min_idsel = 2, max_idsel = 21, irqs_per_slot = 4;
-       return PCI_IRQ_TABLE_LOOKUP;
-}
-
 int
 mpc85xx_exclude_device(u_char bus, u_char devfn)
 {
@@ -119,44 +47,63 @@ mpc85xx_exclude_device(u_char bus, u_char devfn)
                return PCIBIOS_SUCCESSFUL;
 }
 
+void __init
+mpc85xx_pcibios_fixup(void)
+{
+       struct pci_dev *dev = NULL;
+
+       for_each_pci_dev(dev)
+               pci_read_irq_line(dev);
+}
 #endif /* CONFIG_PCI */
 
 
 void __init mpc85xx_ads_pic_init(void)
 {
-       struct mpic *mpic1;
-       phys_addr_t OpenPIC_PAddr;
-
-       /* Determine the Physical Address of the OpenPIC regs */
-       OpenPIC_PAddr = get_immrbase() + MPC85xx_OPENPIC_OFFSET;
-
-       mpic1 = mpic_alloc(OpenPIC_PAddr,
-                          MPIC_PRIMARY | MPIC_WANTS_RESET | MPIC_BIG_ENDIAN,
-                          4, MPC85xx_OPENPIC_IRQ_OFFSET, 0, 250,
-                          mpc85xx_ads_openpic_initsenses,
-                          sizeof(mpc85xx_ads_openpic_initsenses),
-                          " OpenPIC  ");
-       BUG_ON(mpic1 == NULL);
-       mpic_assign_isu(mpic1, 0, OpenPIC_PAddr + 0x10200);
-       mpic_assign_isu(mpic1, 1, OpenPIC_PAddr + 0x10280);
-       mpic_assign_isu(mpic1, 2, OpenPIC_PAddr + 0x10300);
-       mpic_assign_isu(mpic1, 3, OpenPIC_PAddr + 0x10380);
-       mpic_assign_isu(mpic1, 4, OpenPIC_PAddr + 0x10400);
-       mpic_assign_isu(mpic1, 5, OpenPIC_PAddr + 0x10480);
-       mpic_assign_isu(mpic1, 6, OpenPIC_PAddr + 0x10500);
-       mpic_assign_isu(mpic1, 7, OpenPIC_PAddr + 0x10580);
-
-       /* dummy mappings to get to 48 */
-       mpic_assign_isu(mpic1, 8, OpenPIC_PAddr + 0x10600);
-       mpic_assign_isu(mpic1, 9, OpenPIC_PAddr + 0x10680);
-       mpic_assign_isu(mpic1, 10, OpenPIC_PAddr + 0x10700);
-       mpic_assign_isu(mpic1, 11, OpenPIC_PAddr + 0x10780);
-
-       /* External ints */
-       mpic_assign_isu(mpic1, 12, OpenPIC_PAddr + 0x10000);
-       mpic_assign_isu(mpic1, 13, OpenPIC_PAddr + 0x10080);
-       mpic_assign_isu(mpic1, 14, OpenPIC_PAddr + 0x10100);
-       mpic_init(mpic1);
+       struct mpic *mpic;
+       struct resource r;
+       struct device_node *np = NULL;
+
+       np = of_find_node_by_type(np, "open-pic");
+
+       if (np == NULL) {
+               printk(KERN_ERR "Could not find open-pic node\n");
+               return;
+       }
+
+       if(of_address_to_resource(np, 0, &r)) {
+               printk(KERN_ERR "Could not map mpic register space\n");
+               of_node_put(np);
+               return;
+       }
+
+       mpic = mpic_alloc(np, r.start,
+                       MPIC_PRIMARY | MPIC_WANTS_RESET | MPIC_BIG_ENDIAN,
+                       4, 0, " OpenPIC  ");
+       BUG_ON(mpic == NULL);
+       of_node_put(np);
+
+       mpic_assign_isu(mpic, 0, r.start + 0x10200);
+       mpic_assign_isu(mpic, 1, r.start + 0x10280);
+       mpic_assign_isu(mpic, 2, r.start + 0x10300);
+       mpic_assign_isu(mpic, 3, r.start + 0x10380);
+       mpic_assign_isu(mpic, 4, r.start + 0x10400);
+       mpic_assign_isu(mpic, 5, r.start + 0x10480);
+       mpic_assign_isu(mpic, 6, r.start + 0x10500);
+       mpic_assign_isu(mpic, 7, r.start + 0x10580);
+
+       /* Unused on this platform (leave room for 8548) */
+       mpic_assign_isu(mpic, 8, r.start + 0x10600);
+       mpic_assign_isu(mpic, 9, r.start + 0x10680);
+       mpic_assign_isu(mpic, 10, r.start + 0x10700);
+       mpic_assign_isu(mpic, 11, r.start + 0x10780);
+
+       /* External Interrupts */
+       mpic_assign_isu(mpic, 12, r.start + 0x10000);
+       mpic_assign_isu(mpic, 13, r.start + 0x10080);
+       mpic_assign_isu(mpic, 14, r.start + 0x10100);
+
+       mpic_init(mpic);
 }
 
 /*
@@ -165,7 +112,9 @@ void __init mpc85xx_ads_pic_init(void)
 static void __init mpc85xx_ads_setup_arch(void)
 {
        struct device_node *cpu;
+#ifdef CONFIG_PCI
        struct device_node *np;
+#endif
 
        if (ppc_md.progress)
                ppc_md.progress("mpc85xx_ads_setup_arch()", 0);
@@ -186,8 +135,7 @@ static void __init mpc85xx_ads_setup_arch(void)
        for (np = NULL; (np = of_find_node_by_type(np, "pci")) != NULL;)
                add_bridge(np);
 
-       ppc_md.pci_swizzle = common_swizzle;
-       ppc_md.pci_map_irq = mpc85xx_map_irq;
+       ppc_md.pcibios_fixup = mpc85xx_pcibios_fixup;
        ppc_md.pci_exclude_device = mpc85xx_exclude_device;
 #endif
 
index 18e6e11..1d357d3 100644 (file)
@@ -57,94 +57,8 @@ unsigned long isa_mem_base = 0;
 static int cds_pci_slot = 2;
 static volatile u8 *cadmus;
 
-/*
- * Internal interrupts are all Level Sensitive, and Positive Polarity
- *
- * Note:  Likely, this table and the following function should be
- *        obtained and derived from the OF Device Tree.
- */
-static u_char mpc85xx_cds_openpic_initsenses[] __initdata = {
-       MPC85XX_INTERNAL_IRQ_SENSES,
-#if defined(CONFIG_PCI)
-       (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE),      /* Ext 0: PCI slot 0 */
-       (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE),      /* Ext 1: PCI slot 1 */
-       (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE),      /* Ext 2: PCI slot 2 */
-       (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE),      /* Ext 3: PCI slot 3 */
-#else
-       0x0,                            /* External  0: */
-       0x0,                            /* External  1: */
-       0x0,                            /* External  2: */
-       0x0,                            /* External  3: */
-#endif
-       (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE),      /* External 5: PHY */
-       0x0,                            /* External  6: */
-       0x0,                            /* External  7: */
-       0x0,                            /* External  8: */
-       0x0,                            /* External  9: */
-       0x0,                            /* External 10: */
-#ifdef CONFIG_PCI
-       (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE),    /* Ext 11: PCI2 slot 0 */
-#else
-       0x0,                            /* External 11: */
-#endif
-};
-
 
 #ifdef CONFIG_PCI
-/*
- * interrupt routing
- */
-int
-mpc85xx_map_irq(struct pci_dev *dev, unsigned char idsel, unsigned char pin)
-{
-       struct pci_controller *hose = pci_bus_to_hose(dev->bus->number);
-
-       if (!hose->index)
-       {
-               /* Handle PCI1 interrupts */
-               char pci_irq_table[][4] =
-                       /*
-                        *      PCI IDSEL/INTPIN->INTLINE
-                        *        A      B      C      D
-                        */
-
-                       /* Note IRQ assignment for slots is based on which slot the elysium is
-                        * in -- in this setup elysium is in slot #2 (this PIRQA as first
-                        * interrupt on slot */
-               {
-                       { 0, 1, 2, 3 }, /* 16 - PMC */
-                       { 0, 1, 2, 3 }, /* 17 P2P (Tsi320) */
-                       { 0, 1, 2, 3 }, /* 18 - Slot 1 */
-                       { 1, 2, 3, 0 }, /* 19 - Slot 2 */
-                       { 2, 3, 0, 1 }, /* 20 - Slot 3 */
-                       { 3, 0, 1, 2 }, /* 21 - Slot 4 */
-               };
-
-               const long min_idsel = 16, max_idsel = 21, irqs_per_slot = 4;
-               int i, j;
-
-               for (i = 0; i < 6; i++)
-                       for (j = 0; j < 4; j++)
-                               pci_irq_table[i][j] =
-                                       ((pci_irq_table[i][j] + 5 -
-                                         cds_pci_slot) & 0x3) + PIRQ0A;
-
-               return PCI_IRQ_TABLE_LOOKUP;
-       } else {
-               /* Handle PCI2 interrupts (if we have one) */
-               char pci_irq_table[][4] =
-               {
-                       /*
-                        * We only have one slot and one interrupt
-                        * going to PIRQA - PIRQD */
-                       { PIRQ1A, PIRQ1A, PIRQ1A, PIRQ1A }, /* 21 - slot 0 */
-               };
-
-               const long min_idsel = 21, max_idsel = 21, irqs_per_slot = 4;
-
-               return PCI_IRQ_TABLE_LOOKUP;
-       }
-}
 
 #define ARCADIA_HOST_BRIDGE_IDSEL      17
 #define ARCADIA_2ND_BRIDGE_IDSEL       3
@@ -210,50 +124,104 @@ mpc85xx_cds_pcibios_fixup(void)
                pci_write_config_byte(dev, PCI_INTERRUPT_LINE, 11);
                pci_dev_put(dev);
        }
+
+       /* Now map all the PCI irqs */
+       dev = NULL;
+       for_each_pci_dev(dev)
+               pci_read_irq_line(dev);
+}
+
+#ifdef CONFIG_PPC_I8259
+#warning The i8259 PIC support is currently broken
+static void mpc85xx_8259_cascade(unsigned int irq, struct
+               irq_desc *desc, struct pt_regs *regs)
+{
+       unsigned int cascade_irq = i8259_irq(regs);
+
+       if (cascade_irq != NO_IRQ)
+               generic_handle_irq(cascade_irq, regs);
+
+       desc->chip->eoi(irq);
 }
+#endif /* PPC_I8259 */
 #endif /* CONFIG_PCI */
 
 void __init mpc85xx_cds_pic_init(void)
 {
-       struct mpic *mpic1;
-       phys_addr_t OpenPIC_PAddr;
+       struct mpic *mpic;
+       struct resource r;
+       struct device_node *np = NULL;
+       struct device_node *cascade_node = NULL;
+       int cascade_irq;
 
-       /* Determine the Physical Address of the OpenPIC regs */
-       OpenPIC_PAddr = get_immrbase() + MPC85xx_OPENPIC_OFFSET;
+       np = of_find_node_by_type(np, "open-pic");
+
+       if (np == NULL) {
+               printk(KERN_ERR "Could not find open-pic node\n");
+               return;
+       }
 
-       mpic1 = mpic_alloc(OpenPIC_PAddr,
+       if (of_address_to_resource(np, 0, &r)) {
+               printk(KERN_ERR "Failed to map mpic register space\n");
+               of_node_put(np);
+               return;
+       }
+
+       mpic = mpic_alloc(np, r.start,
                        MPIC_PRIMARY | MPIC_WANTS_RESET | MPIC_BIG_ENDIAN,
-                       4, MPC85xx_OPENPIC_IRQ_OFFSET, 0, 250,
-                       mpc85xx_cds_openpic_initsenses,
-                       sizeof(mpc85xx_cds_openpic_initsenses), " OpenPIC  ");
-       BUG_ON(mpic1 == NULL);
-       mpic_assign_isu(mpic1, 0, OpenPIC_PAddr + 0x10200);
-       mpic_assign_isu(mpic1, 1, OpenPIC_PAddr + 0x10280);
-       mpic_assign_isu(mpic1, 2, OpenPIC_PAddr + 0x10300);
-       mpic_assign_isu(mpic1, 3, OpenPIC_PAddr + 0x10380);
-       mpic_assign_isu(mpic1, 4, OpenPIC_PAddr + 0x10400);
-       mpic_assign_isu(mpic1, 5, OpenPIC_PAddr + 0x10480);
-       mpic_assign_isu(mpic1, 6, OpenPIC_PAddr + 0x10500);
-       mpic_assign_isu(mpic1, 7, OpenPIC_PAddr + 0x10580);
-
-       /* dummy mappings to get to 48 */
-       mpic_assign_isu(mpic1, 8, OpenPIC_PAddr + 0x10600);
-       mpic_assign_isu(mpic1, 9, OpenPIC_PAddr + 0x10680);
-       mpic_assign_isu(mpic1, 10, OpenPIC_PAddr + 0x10700);
-       mpic_assign_isu(mpic1, 11, OpenPIC_PAddr + 0x10780);
-
-       /* External ints */
-       mpic_assign_isu(mpic1, 12, OpenPIC_PAddr + 0x10000);
-       mpic_assign_isu(mpic1, 13, OpenPIC_PAddr + 0x10080);
-       mpic_assign_isu(mpic1, 14, OpenPIC_PAddr + 0x10100);
-
-       mpic_init(mpic1);
+                       4, 0, " OpenPIC  ");
+       BUG_ON(mpic == NULL);
+
+       /* Return the mpic node */
+       of_node_put(np);
+
+       mpic_assign_isu(mpic, 0, r.start + 0x10200);
+       mpic_assign_isu(mpic, 1, r.start + 0x10280);
+       mpic_assign_isu(mpic, 2, r.start + 0x10300);
+       mpic_assign_isu(mpic, 3, r.start + 0x10380);
+       mpic_assign_isu(mpic, 4, r.start + 0x10400);
+       mpic_assign_isu(mpic, 5, r.start + 0x10480);
+       mpic_assign_isu(mpic, 6, r.start + 0x10500);
+       mpic_assign_isu(mpic, 7, r.start + 0x10580);
+
+       /* Used only for 8548 so far, but no harm in
+        * allocating them for everyone */
+       mpic_assign_isu(mpic, 8, r.start + 0x10600);
+       mpic_assign_isu(mpic, 9, r.start + 0x10680);
+       mpic_assign_isu(mpic, 10, r.start + 0x10700);
+       mpic_assign_isu(mpic, 11, r.start + 0x10780);
+
+       /* External Interrupts */
+       mpic_assign_isu(mpic, 12, r.start + 0x10000);
+       mpic_assign_isu(mpic, 13, r.start + 0x10080);
+       mpic_assign_isu(mpic, 14, r.start + 0x10100);
+
+       mpic_init(mpic);
+
+#ifdef CONFIG_PPC_I8259
+       /* Initialize the i8259 controller */
+       for_each_node_by_type(np, "interrupt-controller")
+               if (device_is_compatible(np, "chrp,iic")) {
+                       cascade_node = np;
+                       break;
+               }
+
+       if (cascade_node == NULL) {
+               printk(KERN_DEBUG "Could not find i8259 PIC\n");
+               return;
+       }
 
-#ifdef CONFIG_PCI
-       mpic_setup_cascade(PIRQ0A, i8259_irq_cascade, NULL);
+       cascade_irq = irq_of_parse_and_map(cascade_node, 0);
+       if (cascade_irq == NO_IRQ) {
+               printk(KERN_ERR "Failed to map cascade interrupt\n");
+               return;
+       }
 
-       i8259_init(0,0);
-#endif
+       i8259_init(cascade_node, 0);
+       of_node_put(cascade_node);
+
+       set_irq_chained_handler(cascade_irq, mpc85xx_8259_cascade);
+#endif /* CONFIG_PPC_I8259 */
 }
 
 
@@ -298,8 +266,6 @@ mpc85xx_cds_setup_arch(void)
                add_bridge(np);
 
        ppc_md.pcibios_fixup = mpc85xx_cds_pcibios_fixup;
-       ppc_md.pci_swizzle = common_swizzle;
-       ppc_md.pci_map_irq = mpc85xx_map_irq;
        ppc_md.pci_exclude_device = mpc85xx_exclude_device;
 #endif
 
index 5d2bcf7..41e554c 100644 (file)
 
 #include <linux/init.h>
 
-/* PCI interrupt controller */
-#define PIRQA          3
-#define PIRQB          4
-#define PIRQC          5
-#define PIRQD          6
-#define PIRQ7          7
-#define PIRQE          9
-#define PIRQF          10
-#define PIRQG          11
-#define PIRQH          12
-
-/* PCI-Express memory map */
-#define MPC86XX_PCIE_LOWER_IO        0x00000000
-#define MPC86XX_PCIE_UPPER_IO        0x00ffffff
-
-#define MPC86XX_PCIE_LOWER_MEM       0x80000000
-#define MPC86XX_PCIE_UPPER_MEM       0x9fffffff
-
-#define MPC86XX_PCIE_IO_BASE         0xe2000000
-#define MPC86XX_PCIE_MEM_OFFSET      0x00000000
-
-#define MPC86XX_PCIE_IO_SIZE         0x01000000
-
-#define PCIE1_CFG_ADDR_OFFSET    (0x8000)
-#define PCIE1_CFG_DATA_OFFSET    (0x8004)
-
-#define PCIE2_CFG_ADDR_OFFSET    (0x9000)
-#define PCIE2_CFG_DATA_OFFSET    (0x9004)
-
-#define MPC86xx_PCIE_OFFSET PCIE1_CFG_ADDR_OFFSET
-#define MPC86xx_PCIE_SIZE      (0x1000)
-
 #define MPC86XX_RSTCR_OFFSET   (0xe00b0)       /* Reset Control Register */
 
 #endif /* __MPC8641_HPCN_H__ */
index ebae73e..146da30 100644 (file)
 #include "mpc86xx.h"
 #include "mpc8641_hpcn.h"
 
+#undef DEBUG
+
+#ifdef DEBUG
+#define DBG(fmt...) do { printk(KERN_ERR fmt); } while(0)
+#else
+#define DBG(fmt...) do { } while(0)
+#endif
+
 #ifndef CONFIG_PCI
 unsigned long isa_io_base = 0;
 unsigned long isa_mem_base = 0;
@@ -44,205 +52,215 @@ unsigned long pci_dram_offset = 0;
 #endif
 
 
-/*
- * Internal interrupts are all Level Sensitive, and Positive Polarity
- */
-
-static u_char mpc86xx_hpcn_openpic_initsenses[] __initdata = {
-       (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE),      /* Internal  0: Reserved */
-       (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE),      /* Internal  1: MCM */
-       (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE),      /* Internal  2: DDR DRAM */
-       (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE),      /* Internal  3: LBIU */
-       (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE),      /* Internal  4: DMA 0 */
-       (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE),      /* Internal  5: DMA 1 */
-       (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE),      /* Internal  6: DMA 2 */
-       (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE),      /* Internal  7: DMA 3 */
-       (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE),      /* Internal  8: PCIE1 */
-       (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE),      /* Internal  9: PCIE2 */
-       (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE),      /* Internal 10: Reserved */
-       (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE),      /* Internal 11: Reserved */
-       (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE),      /* Internal 12: DUART2 */
-       (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE),      /* Internal 13: TSEC 1 Transmit */
-       (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE),      /* Internal 14: TSEC 1 Receive */
-       (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE),      /* Internal 15: TSEC 3 transmit */
-       (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE),      /* Internal 16: TSEC 3 receive */
-       (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE),      /* Internal 17: TSEC 3 error */
-       (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE),      /* Internal 18: TSEC 1 Receive/Transmit Error */
-       (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE),      /* Internal 19: TSEC 2 Transmit */
-       (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE),      /* Internal 20: TSEC 2 Receive */
-       (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE),      /* Internal 21: TSEC 4 transmit */
-       (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE),      /* Internal 22: TSEC 4 receive */
-       (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE),      /* Internal 23: TSEC 4 error */
-       (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE),      /* Internal 24: TSEC 2 Receive/Transmit Error */
-       (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE),      /* Internal 25: Unused */
-       (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE),      /* Internal 26: DUART1 */
-       (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE),      /* Internal 27: I2C */
-       (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE),      /* Internal 28: Performance Monitor */
-       (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE),      /* Internal 29: Unused */
-       (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE),      /* Internal 30: Unused */
-       (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE),      /* Internal 31: Unused */
-       (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE),      /* Internal 32: SRIO error/write-port unit */
-       (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE),      /* Internal 33: SRIO outbound doorbell */
-       (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE),      /* Internal 34: SRIO inbound doorbell */
-       (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE),      /* Internal 35: Unused */
-       (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE),      /* Internal 36: Unused */
-       (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE),      /* Internal 37: SRIO outbound message unit 1 */
-       (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE),      /* Internal 38: SRIO inbound message unit 1 */
-       (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE),      /* Internal 39: SRIO outbound message unit 2 */
-       (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE),      /* Internal 40: SRIO inbound message unit 2 */
-       (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE),      /* Internal 41: Unused */
-       (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE),      /* Internal 42: Unused */
-       (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE),      /* Internal 43: Unused */
-       (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE),      /* Internal 44: Unused */
-       (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE),      /* Internal 45: Unused */
-       (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE),      /* Internal 46: Unused */
-       (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE),      /* Internal 47: Unused */
-       0x0,                                            /* External  0: */
-       0x0,                                            /* External  1: */
-       0x0,                                            /* External  2: */
-       0x0,                                            /* External  3: */
-       0x0,                                            /* External  4: */
-       0x0,                                            /* External  5: */
-       0x0,                                            /* External  6: */
-       0x0,                                            /* External  7: */
-       (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE),      /* External  8: Pixis FPGA */
-       (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE),      /* External  9: ULI 8259 INTR Cascade */
-       (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE),      /* External 10: Quad ETH PHY */
-       0x0,                                            /* External 11: */
-       0x0,
-       0x0,
-       0x0,
-       0x0,
-};
-
+static void mpc86xx_8259_cascade(unsigned int irq, struct irq_desc *desc,
+                                struct pt_regs *regs)
+{
+       unsigned int cascade_irq = i8259_irq(regs);
+       if (cascade_irq != NO_IRQ)
+               generic_handle_irq(cascade_irq, regs);
+       desc->chip->eoi(irq);
+}
 
 void __init
 mpc86xx_hpcn_init_irq(void)
 {
        struct mpic *mpic1;
+       struct device_node *np, *cascade_node = NULL;
+       int cascade_irq;
        phys_addr_t openpic_paddr;
 
+       np = of_find_node_by_type(NULL, "open-pic");
+       if (np == NULL)
+               return;
+
        /* Determine the Physical Address of the OpenPIC regs */
        openpic_paddr = get_immrbase() + MPC86xx_OPENPIC_OFFSET;
 
        /* Alloc mpic structure and per isu has 16 INT entries. */
-       mpic1 = mpic_alloc(openpic_paddr,
+       mpic1 = mpic_alloc(np, openpic_paddr,
                        MPIC_PRIMARY | MPIC_WANTS_RESET | MPIC_BIG_ENDIAN,
-                       16, MPC86xx_OPENPIC_IRQ_OFFSET, 0, 250,
-                       mpc86xx_hpcn_openpic_initsenses,
-                       sizeof(mpc86xx_hpcn_openpic_initsenses),
+                       16, NR_IRQS - 4,
                        " MPIC     ");
        BUG_ON(mpic1 == NULL);
 
+       mpic_assign_isu(mpic1, 0, openpic_paddr + 0x10000);
+
        /* 48 Internal Interrupts */
-       mpic_assign_isu(mpic1, 0, openpic_paddr + 0x10200);
-       mpic_assign_isu(mpic1, 1, openpic_paddr + 0x10400);
-       mpic_assign_isu(mpic1, 2, openpic_paddr + 0x10600);
+       mpic_assign_isu(mpic1, 1, openpic_paddr + 0x10200);
+       mpic_assign_isu(mpic1, 2, openpic_paddr + 0x10400);
+       mpic_assign_isu(mpic1, 3, openpic_paddr + 0x10600);
 
-       /* 16 External interrupts */
-       mpic_assign_isu(mpic1, 3, openpic_paddr + 0x10000);
+       /* 16 External interrupts
+        * Moving them from [0 - 15] to [64 - 79]
+        */
+       mpic_assign_isu(mpic1, 4, openpic_paddr + 0x10000);
 
        mpic_init(mpic1);
 
 #ifdef CONFIG_PCI
-       mpic_setup_cascade(MPC86xx_IRQ_EXT9, i8259_irq_cascade, NULL);
-       i8259_init(0, I8259_OFFSET);
-#endif
-}
+       /* Initialize i8259 controller */
+       for_each_node_by_type(np, "interrupt-controller")
+               if (device_is_compatible(np, "chrp,iic")) {
+                       cascade_node = np;
+                       break;
+               }
+       if (cascade_node == NULL) {
+               printk(KERN_DEBUG "mpc86xxhpcn: no ISA interrupt controller\n");
+               return;
+       }
 
+       cascade_irq = irq_of_parse_and_map(cascade_node, 0);
+       if (cascade_irq == NO_IRQ) {
+               printk(KERN_ERR "mpc86xxhpcn: failed to map cascade interrupt");
+               return;
+       }
+       DBG("mpc86xxhpcn: cascade mapped to irq %d\n", cascade_irq);
 
+       i8259_init(cascade_node, 0);
+       set_irq_chained_handler(cascade_irq, mpc86xx_8259_cascade);
+#endif
+}
 
 #ifdef CONFIG_PCI
-/*
- * interrupt routing
- */
 
-int
-mpc86xx_map_irq(struct pci_dev *dev, unsigned char idsel, unsigned char pin)
+enum pirq{PIRQA = 8, PIRQB, PIRQC, PIRQD, PIRQE, PIRQF, PIRQG, PIRQH};
+const unsigned char uli1575_irq_route_table[16] = {
+       0,      /* 0: Reserved */
+       0x8,    /* 1: 0b1000 */
+       0,      /* 2: Reserved */
+       0x2,    /* 3: 0b0010 */
+       0x4,    /* 4: 0b0100 */
+       0x5,    /* 5: 0b0101 */
+       0x7,    /* 6: 0b0111 */
+       0x6,    /* 7: 0b0110 */
+       0,      /* 8: Reserved */
+       0x1,    /* 9: 0b0001 */
+       0x3,    /* 10: 0b0011 */
+       0x9,    /* 11: 0b1001 */
+       0xb,    /* 12: 0b1011 */
+       0,      /* 13: Reserved */
+       0xd,    /* 14, 0b1101 */
+       0xf,    /* 15, 0b1111 */
+};
+
+static int __devinit
+get_pci_irq_from_of(struct pci_controller *hose, int slot, int pin)
 {
-       static char pci_irq_table[][4] = {
-               /*
-                *      PCI IDSEL/INTPIN->INTLINE
-                *       A      B      C      D
-                */
-               {PIRQA, PIRQB, PIRQC, PIRQD},   /* IDSEL 17 -- PCI Slot 1 */
-               {PIRQB, PIRQC, PIRQD, PIRQA},   /* IDSEL 18 -- PCI Slot 2 */
-               {0, 0, 0, 0},                   /* IDSEL 19 */
-               {0, 0, 0, 0},                   /* IDSEL 20 */
-               {0, 0, 0, 0},                   /* IDSEL 21 */
-               {0, 0, 0, 0},                   /* IDSEL 22 */
-               {0, 0, 0, 0},                   /* IDSEL 23 */
-               {0, 0, 0, 0},                   /* IDSEL 24 */
-               {0, 0, 0, 0},                   /* IDSEL 25 */
-               {PIRQD, PIRQA, PIRQB, PIRQC},   /* IDSEL 26 -- PCI Bridge*/
-               {PIRQC, 0, 0, 0},               /* IDSEL 27 -- LAN */
-               {PIRQE, PIRQF, PIRQH, PIRQ7},   /* IDSEL 28 -- USB 1.1 */
-               {PIRQE, PIRQF, PIRQG, 0},       /* IDSEL 29 -- Audio & Modem */
-               {PIRQH, 0, 0, 0},               /* IDSEL 30 -- LPC & PMU*/
-               {PIRQD, 0, 0, 0},               /* IDSEL 31 -- ATA */
-       };
-
-       const long min_idsel = 17, max_idsel = 31, irqs_per_slot = 4;
-       return PCI_IRQ_TABLE_LOOKUP + I8259_OFFSET;
+       struct of_irq oirq;
+       u32 laddr[3];
+       struct device_node *hosenode = hose ? hose->arch_data : NULL;
+
+       if (!hosenode) return -EINVAL;
+
+       laddr[0] = (hose->first_busno << 16) | (PCI_DEVFN(slot, 0) << 8);
+       laddr[1] = laddr[2] = 0;
+       of_irq_map_raw(hosenode, &pin, laddr, &oirq);
+       DBG("mpc86xx_hpcn: pci irq addr %x, slot %d, pin %d, irq %d\n",
+                       laddr[0], slot, pin, oirq.specifier[0]);
+       return oirq.specifier[0];
 }
 
-static void __devinit quirk_ali1575(struct pci_dev *dev)
+static void __devinit quirk_uli1575(struct pci_dev *dev)
 {
        unsigned short temp;
+       struct pci_controller *hose = pci_bus_to_host(dev->bus);
+       unsigned char irq2pin[16];
+       unsigned long pirq_map_word = 0;
+       u32 irq;
+       int i;
 
        /*
-        * ALI1575 interrupts route table setup:
+        * ULI1575 interrupts route setup
+        */
+       memset(irq2pin, 0, 16); /* Initialize default value 0 */
+
+       /*
+        * PIRQA -> PIRQD mapping read from OF-tree
+        *
+        * interrupts for PCI slot0 -- PIRQA / PIRQB / PIRQC / PIRQD
+        *                PCI slot1 -- PIRQB / PIRQC / PIRQD / PIRQA
+        */
+       for (i = 0; i < 4; i++){
+               irq = get_pci_irq_from_of(hose, 17, i + 1);
+               if (irq > 0 && irq < 16)
+                       irq2pin[irq] = PIRQA + i;
+               else
+                       printk(KERN_WARNING "ULI1575 device"
+                           "(slot %d, pin %d) irq %d is invalid.\n",
+                           17, i, irq);
+       }
+
+       /*
+        * PIRQE -> PIRQF mapping set manually
         *
         * IRQ pin   IRQ#
-        * PIRQA ---- 3
-        * PIRQB ---- 4
-        * PIRQC ---- 5
-        * PIRQD ---- 6
         * PIRQE ---- 9
         * PIRQF ---- 10
         * PIRQG ---- 11
         * PIRQH ---- 12
-        *
-        * interrupts for PCI slot0 -- PIRQA / PIRQB / PIRQC / PIRQD
-        *                PCI slot1 -- PIRQB / PIRQC / PIRQD / PIRQA
         */
-       pci_write_config_dword(dev, 0x48, 0xb9317542);
+       for (i = 0; i < 4; i++) irq2pin[i + 9] = PIRQE + i;
+
+       /* Set IRQ-PIRQ Mapping to ULI1575 */
+       for (i = 0; i < 16; i++)
+               if (irq2pin[i])
+                       pirq_map_word |= (uli1575_irq_route_table[i] & 0xf)
+                               << ((irq2pin[i] - PIRQA) * 4);
 
-       /* USB 1.1 OHCI controller 1, interrupt: PIRQE */
-       pci_write_config_byte(dev, 0x86, 0x0c);
+       /* ULI1575 IRQ mapping conf register default value is 0xb9317542 */
+       DBG("Setup ULI1575 IRQ mapping configuration register value = 0x%x\n",
+                       pirq_map_word);
+       pci_write_config_dword(dev, 0x48, pirq_map_word);
 
-       /* USB 1.1 OHCI controller 2, interrupt: PIRQF */
-       pci_write_config_byte(dev, 0x87, 0x0d);
+#define ULI1575_SET_DEV_IRQ(slot, pin, reg)                            \
+       do {                                                            \
+               int irq;                                                \
+               irq = get_pci_irq_from_of(hose, slot, pin);             \
+               if (irq > 0 && irq < 16)                                \
+                       pci_write_config_byte(dev, reg, irq2pin[irq]);  \
+               else                                                    \
+                       printk(KERN_WARNING "ULI1575 device"            \
+                           "(slot %d, pin %d) irq %d is invalid.\n",   \
+                           slot, pin, irq);                            \
+       } while(0)
 
-       /* USB 1.1 OHCI controller 3, interrupt: PIRQH */
-       pci_write_config_byte(dev, 0x88, 0x0f);
+       /* USB 1.1 OHCI controller 1, slot 28, pin 1 */
+       ULI1575_SET_DEV_IRQ(28, 1, 0x86);
 
-       /* USB 2.0 controller, interrupt: PIRQ7 */
-       pci_write_config_byte(dev, 0x74, 0x06);
+       /* USB 1.1 OHCI controller 2, slot 28, pin 2 */
+       ULI1575_SET_DEV_IRQ(28, 2, 0x87);
 
-       /* Audio controller, interrupt: PIRQE */
-       pci_write_config_byte(dev, 0x8a, 0x0c);
+       /* USB 1.1 OHCI controller 3, slot 28, pin 3 */
+       ULI1575_SET_DEV_IRQ(28, 3, 0x88);
 
-       /* Modem controller, interrupt: PIRQF */
-       pci_write_config_byte(dev, 0x8b, 0x0d);
+       /* USB 2.0 controller, slot 28, pin 4 */
+       irq = get_pci_irq_from_of(hose, 28, 4);
+       if (irq >= 0 && irq <=15)
+               pci_write_config_dword(dev, 0x74, uli1575_irq_route_table[irq]);
 
-       /* HD audio controller, interrupt: PIRQG */
-       pci_write_config_byte(dev, 0x8c, 0x0e);
+       /* Audio controller, slot 29, pin 1 */
+       ULI1575_SET_DEV_IRQ(29, 1, 0x8a);
 
-       /* Serial ATA interrupt: PIRQD */
-       pci_write_config_byte(dev, 0x8d, 0x0b);
+       /* Modem controller, slot 29, pin 2 */
+       ULI1575_SET_DEV_IRQ(29, 2, 0x8b);
 
-       /* SMB interrupt: PIRQH */
-       pci_write_config_byte(dev, 0x8e, 0x0f);
+       /* HD audio controller, slot 29, pin 3 */
+       ULI1575_SET_DEV_IRQ(29, 3, 0x8c);
 
-       /* PMU ACPI SCI interrupt: PIRQH */
-       pci_write_config_byte(dev, 0x8f, 0x0f);
+       /* SMB interrupt: slot 30, pin 1 */
+       ULI1575_SET_DEV_IRQ(30, 1, 0x8e);
+
+       /* PMU ACPI SCI interrupt: slot 30, pin 2 */
+       ULI1575_SET_DEV_IRQ(30, 2, 0x8f);
+
+       /* Serial ATA interrupt: slot 31, pin 1 */
+       ULI1575_SET_DEV_IRQ(31, 1, 0x8d);
 
        /* Primary PATA IDE IRQ: 14
         * Secondary PATA IDE IRQ: 15
         */
-       pci_write_config_byte(dev, 0x44, 0x3d);
-       pci_write_config_byte(dev, 0x75, 0x0f);
+       pci_write_config_byte(dev, 0x44, 0x30 | uli1575_irq_route_table[14]);
+       pci_write_config_byte(dev, 0x75, uli1575_irq_route_table[15]);
 
        /* Set IRQ14 and IRQ15 to legacy IRQs */
        pci_read_config_word(dev, 0x46, &temp);
@@ -264,6 +282,8 @@ static void __devinit quirk_ali1575(struct pci_dev *dev)
         */
        outb(0xfa, 0x4d0);
        outb(0x1e, 0x4d1);
+
+#undef ULI1575_SET_DEV_IRQ
 }
 
 static void __devinit quirk_uli5288(struct pci_dev *dev)
@@ -306,7 +326,7 @@ static void __devinit early_uli5249(struct pci_dev *dev)
        dev->class |= 0x1;
 }
 
-DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AL, 0x1575, quirk_ali1575);
+DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AL, 0x1575, quirk_uli1575);
 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AL, 0x5288, quirk_uli5288);
 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AL, 0x5229, quirk_uli5229);
 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_AL, 0x5249, early_uli5249);
@@ -337,8 +357,6 @@ mpc86xx_hpcn_setup_arch(void)
        for (np = NULL; (np = of_find_node_by_type(np, "pci")) != NULL;)
                add_bridge(np);
 
-       ppc_md.pci_swizzle = common_swizzle;
-       ppc_md.pci_map_irq = mpc86xx_map_irq;
        ppc_md.pci_exclude_device = mpc86xx_exclude_device;
 #endif
 
@@ -377,6 +395,15 @@ mpc86xx_hpcn_show_cpuinfo(struct seq_file *m)
 }
 
 
+void __init mpc86xx_hpcn_pcibios_fixup(void)
+{
+       struct pci_dev *dev = NULL;
+
+       for_each_pci_dev(dev)
+               pci_read_irq_line(dev);
+}
+
+
 /*
  * Called very early, device-tree isn't unflattened
  */
@@ -431,6 +458,7 @@ define_machine(mpc86xx_hpcn) {
        .setup_arch             = mpc86xx_hpcn_setup_arch,
        .init_IRQ               = mpc86xx_hpcn_init_irq,
        .show_cpuinfo           = mpc86xx_hpcn_show_cpuinfo,
+       .pcibios_fixup          = mpc86xx_hpcn_pcibios_fixup,
        .get_irq                = mpic_get_irq,
        .restart                = mpc86xx_restart,
        .time_init              = mpc86xx_time_init,
index d7a4fc7..ed00ed2 100644 (file)
@@ -1,7 +1,7 @@
 /*
  * mpc7448_hpc2.c
  *
- * Board setup routines for the Freescale Taiga platform
+ * Board setup routines for the Freescale mpc7448hpc2(taiga) platform
  *
  * Author: Jacob Pan
  *      jacob.pan@freescale.com
  *
  * Copyright 2004-2006 Freescale Semiconductor, Inc.
  *
- * This file is licensed under
- * the terms of the GNU General Public License version 2.  This program
- * is licensed "as is" without any warranty of any kind, whether express
- * or implied.
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
  */
 
 #include <linux/config.h>
@@ -62,43 +62,8 @@ pci_dram_offset = MPC7448_HPC2_PCI_MEM_OFFSET;
 extern int tsi108_setup_pci(struct device_node *dev);
 extern void _nmask_and_or_msr(unsigned long nmask, unsigned long or_val);
 extern void tsi108_pci_int_init(void);
-extern int tsi108_irq_cascade(struct pt_regs *regs, void *unused);
-
-/*
- * Define all of the IRQ senses and polarities.  Taken from the
- * mpc7448hpc  manual.
- * Note:  Likely, this table and the following function should be
- *        obtained and derived from the OF Device Tree.
- */
-
-static u_char mpc7448_hpc2_pic_initsenses[] __initdata = {
-       /* External on-board sources */
-       (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE),      /* INT[0] XINT0 from FPGA */
-       (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE),      /* INT[1] XINT1 from FPGA */
-       (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE),      /* INT[2] PHY_INT from both GIGE */
-       (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE),      /* INT[3] RESERVED */
-       /* Internal Tsi108/109 interrupt sources */
-       (IRQ_SENSE_EDGE  | IRQ_POLARITY_POSITIVE),      /* Reserved IRQ */
-       (IRQ_SENSE_EDGE  | IRQ_POLARITY_POSITIVE),      /* Reserved IRQ */
-       (IRQ_SENSE_EDGE  | IRQ_POLARITY_POSITIVE),      /* Reserved IRQ */
-       (IRQ_SENSE_EDGE  | IRQ_POLARITY_POSITIVE),      /* Reserved IRQ */
-       (IRQ_SENSE_EDGE  | IRQ_POLARITY_POSITIVE),      /* DMA0 */
-       (IRQ_SENSE_EDGE  | IRQ_POLARITY_POSITIVE),      /* DMA1 */
-       (IRQ_SENSE_EDGE  | IRQ_POLARITY_POSITIVE),      /* DMA2 */
-       (IRQ_SENSE_EDGE  | IRQ_POLARITY_POSITIVE),      /* DMA3 */
-       (IRQ_SENSE_EDGE  | IRQ_POLARITY_POSITIVE),      /* UART0 */
-       (IRQ_SENSE_EDGE  | IRQ_POLARITY_POSITIVE),      /* UART1 */
-       (IRQ_SENSE_EDGE  | IRQ_POLARITY_POSITIVE),      /* I2C */
-       (IRQ_SENSE_EDGE  | IRQ_POLARITY_POSITIVE),      /* GPIO */
-       (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE),      /* GIGE0 */
-       (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE),      /* GIGE1 */
-       (IRQ_SENSE_EDGE  | IRQ_POLARITY_POSITIVE),      /* Reserved IRQ */
-       (IRQ_SENSE_EDGE  | IRQ_POLARITY_POSITIVE),      /* HLP */
-       (IRQ_SENSE_EDGE  | IRQ_POLARITY_POSITIVE),      /* SDC */
-       (IRQ_SENSE_EDGE  | IRQ_POLARITY_POSITIVE),      /* Processor IF */
-       (IRQ_SENSE_EDGE  | IRQ_POLARITY_POSITIVE),      /* Reserved IRQ */
-       (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE),      /* PCI/X block */
-};
+extern void tsi108_irq_cascade(unsigned int irq, struct irq_desc *desc,
+                           struct pt_regs *regs);
 
 int mpc7448_hpc2_exclude_device(u_char bus, u_char devfn)
 {
@@ -229,6 +194,8 @@ static void __init mpc7448_hpc2_init_IRQ(void)
 {
        struct mpic *mpic;
        phys_addr_t mpic_paddr = 0;
+       unsigned int cascade_pci_irq;
+       struct device_node *tsi_pci;
        struct device_node *tsi_pic;
 
        tsi_pic = of_find_node_by_type(NULL, "open-pic");
@@ -246,24 +213,31 @@ static void __init mpc7448_hpc2_init_IRQ(void)
        DBG("%s: tsi108pic phys_addr = 0x%x\n", __FUNCTION__,
            (u32) mpic_paddr);
 
-       mpic = mpic_alloc(mpic_paddr,
+       mpic = mpic_alloc(tsi_pic, mpic_paddr,
                        MPIC_PRIMARY | MPIC_BIG_ENDIAN | MPIC_WANTS_RESET |
                        MPIC_SPV_EOI | MPIC_MOD_ID(MPIC_ID_TSI108),
                        0, /* num_sources used */
-                       TSI108_IRQ_BASE,
                        0, /* num_sources used */
-                       NR_IRQS - 4 /* XXXX */,
-                       mpc7448_hpc2_pic_initsenses,
-                       sizeof(mpc7448_hpc2_pic_initsenses), "Tsi108_PIC");
+                       "Tsi108_PIC");
 
        BUG_ON(mpic == NULL); /* XXXX */
-
        mpic_init(mpic);
-       mpic_setup_cascade(IRQ_TSI108_PCI, tsi108_irq_cascade, mpic);
+
+       tsi_pci = of_find_node_by_type(NULL, "pci");
+       if (tsi_pci == 0) {
+               printk("%s: No tsi108 pci node found !\n", __FUNCTION__);
+               return;
+       }
+
+       cascade_pci_irq = irq_of_parse_and_map(tsi_pci, 0);
+       set_irq_data(cascade_pci_irq, mpic);
+       set_irq_chained_handler(cascade_pci_irq, tsi108_irq_cascade);
+
        tsi108_pci_int_init();
 
        /* Configure MPIC outputs to CPU0 */
        tsi108_write_reg(TSI108_MPIC_OFFSET + 0x30c, 0);
+       of_node_put(tsi_pic);
 }
 
 void mpc7448_hpc2_show_cpuinfo(struct seq_file *m)
@@ -320,6 +294,7 @@ static int mpc7448_machine_check_exception(struct pt_regs *regs)
        return 0;
 
 }
+
 define_machine(mpc7448_hpc2){
        .name                   = "MPC7448 HPC2",
        .probe                  = mpc7448_hpc2_probe,
index 6a026c7..9d73d02 100644 (file)
@@ -411,8 +411,15 @@ static unsigned long __init bootx_flatten_dt(unsigned long start)
        DBG("End of boot params: %x\n", mem_end);
        rsvmap[0] = mem_start;
        rsvmap[1] = mem_end;
-       rsvmap[2] = 0;
-       rsvmap[3] = 0;
+       if (bootx_info->ramDisk) {
+               rsvmap[2] = ((unsigned long)bootx_info) + bootx_info->ramDisk;
+               rsvmap[3] = rsvmap[2] + bootx_info->ramDiskSize;
+               rsvmap[4] = 0;
+               rsvmap[5] = 0;
+       } else {
+               rsvmap[2] = 0;
+               rsvmap[3] = 0;
+       }
 
        return (unsigned long)hdr;
 }
@@ -543,12 +550,12 @@ void __init bootx_init(unsigned long r3, unsigned long r4)
         */
        if (bi->version < 5) {
                space = bi->deviceTreeOffset + bi->deviceTreeSize;
-               if (bi->ramDisk)
+               if (bi->ramDisk >= space)
                        space = bi->ramDisk + bi->ramDiskSize;
        } else
                space = bi->totalParamsSize;
 
-       bootx_printf("Total space used by parameters & ramdisk: %x \n", space);
+       bootx_printf("Total space used by parameters & ramdisk: 0x%x \n", space);
 
        /* New BootX will have flushed all TLBs and enters kernel with
         * MMU switched OFF, so this should not be useful anymore.
index 12b6560..ef10bcf 100644 (file)
@@ -85,11 +85,8 @@ static int __init gfar_mdio_of_init(void)
                        mdio_data.irq[k] = -1;
 
                while ((child = of_get_next_child(np, child)) != NULL) {
-                       if (child->n_intrs) {
-                               u32 *id =
-                                   (u32 *) get_property(child, "reg", NULL);
-                               mdio_data.irq[*id] = child->intrs[0].line;
-                       }
+                       u32 *id = get_property(child, "reg", NULL);
+                       mdio_data.irq[*id] = irq_of_parse_and_map(child, 0);
                }
 
                ret =
@@ -131,6 +128,7 @@ static int __init gfar_of_init(void)
                char *model;
                void *mac_addr;
                phandle *ph;
+               int n_res = 1;
 
                memset(r, 0, sizeof(r));
                memset(&gfar_data, 0, sizeof(gfar_data));
@@ -139,8 +137,7 @@ static int __init gfar_of_init(void)
                if (ret)
                        goto err;
 
-               r[1].start = np->intrs[0].line;
-               r[1].end = np->intrs[0].line;
+               r[1].start = r[1].end = irq_of_parse_and_map(np, 0);
                r[1].flags = IORESOURCE_IRQ;
 
                model = get_property(np, "model", NULL);
@@ -150,19 +147,19 @@ static int __init gfar_of_init(void)
                        r[1].name = gfar_tx_intr;
 
                        r[2].name = gfar_rx_intr;
-                       r[2].start = np->intrs[1].line;
-                       r[2].end = np->intrs[1].line;
+                       r[2].start = r[2].end = irq_of_parse_and_map(np, 1);
                        r[2].flags = IORESOURCE_IRQ;
 
                        r[3].name = gfar_err_intr;
-                       r[3].start = np->intrs[2].line;
-                       r[3].end = np->intrs[2].line;
+                       r[3].start = r[3].end = irq_of_parse_and_map(np, 2);
                        r[3].flags = IORESOURCE_IRQ;
+
+                       n_res += 2;
                }
 
                gfar_dev =
                    platform_device_register_simple("fsl-gianfar", i, &r[0],
-                                                   np->n_intrs + 1);
+                                                   n_res + 1);
 
                if (IS_ERR(gfar_dev)) {
                        ret = PTR_ERR(gfar_dev);
@@ -259,8 +256,7 @@ static int __init fsl_i2c_of_init(void)
                if (ret)
                        goto err;
 
-               r[1].start = np->intrs[0].line;
-               r[1].end = np->intrs[0].line;
+               r[1].start = r[1].end = irq_of_parse_and_map(np, 0);
                r[1].flags = IORESOURCE_IRQ;
 
                i2c_dev = platform_device_register_simple("fsl-i2c", i, r, 2);
@@ -396,8 +392,7 @@ static int __init fsl_usb_of_init(void)
                if (ret)
                        goto err;
 
-               r[1].start = np->intrs[0].line;
-               r[1].end = np->intrs[0].line;
+               r[1].start = r[1].end = irq_of_parse_and_map(np, 0);
                r[1].flags = IORESOURCE_IRQ;
 
                usb_dev_mph =
@@ -445,8 +440,7 @@ static int __init fsl_usb_of_init(void)
                if (ret)
                        goto unreg_mph;
 
-               r[1].start = np->intrs[0].line;
-               r[1].end = np->intrs[0].line;
+               r[1].start = r[1].end = irq_of_parse_and_map(np, 0);
                r[1].flags = IORESOURCE_IRQ;
 
                usb_dev_dr =
index 26a0cc8..f303846 100644 (file)
@@ -93,13 +93,15 @@ static int __init tsi108_eth_of_init(void)
                        goto err;
 
                r[1].name = "tx";
-               r[1].start = np->intrs[0].line;
-               r[1].end = np->intrs[0].line;
+               r[1].start = irq_of_parse_and_map(np, 0);
+               r[1].end = irq_of_parse_and_map(np, 0);
                r[1].flags = IORESOURCE_IRQ;
+               DBG("%s: name:start->end = %s:0x%lx-> 0x%lx\n",
+                       __FUNCTION__,r[1].name, r[1].start, r[1].end);
 
                tsi_eth_dev =
                    platform_device_register_simple("tsi-ethernet", i, &r[0],
-                                                   np->n_intrs + 1);
+                                                   1);
 
                if (IS_ERR(tsi_eth_dev)) {
                        ret = PTR_ERR(tsi_eth_dev);
@@ -127,7 +129,7 @@ static int __init tsi108_eth_of_init(void)
                tsi_eth_data.regs = r[0].start;
                tsi_eth_data.phyregs = res.start;
                tsi_eth_data.phy = *phy_id;
-               tsi_eth_data.irq_num = np->intrs[0].line;
+               tsi_eth_data.irq_num = irq_of_parse_and_map(np, 0);
                of_node_put(phy);
                ret =
                    platform_device_add_data(tsi_eth_dev, &tsi_eth_data,
index 3265d54..2ab06ed 100644 (file)
@@ -26,7 +26,6 @@
 #include <linux/irq.h>
 #include <linux/interrupt.h>
 
-
 #include <asm/byteorder.h>
 #include <asm/io.h>
 #include <asm/irq.h>
@@ -228,7 +227,7 @@ int __init tsi108_setup_pci(struct device_node *dev)
 
        (hose)->ops = &tsi108_direct_pci_ops;
 
-       printk(KERN_INFO "Found tsi108 PCI host bridge at 0x%08lx. "
+       printk(KERN_INFO "Found tsi108 PCI host bridge at 0x%08x. "
               "Firmware bus number: %d->%d\n",
               rsrc.start, hose->first_busno, hose->last_busno);
 
@@ -278,7 +277,7 @@ static void init_pci_source(void)
        mb();
 }
 
-static inline int get_pci_source(void)
+static inline unsigned int get_pci_source(void)
 {
        u_int temp = 0;
        int irq = -1;
@@ -371,12 +370,12 @@ static void tsi108_pci_irq_end(u_int irq)
  * Interrupt controller descriptor for cascaded PCI interrupt controller.
  */
 
-struct hw_interrupt_type tsi108_pci_irq = {
+static struct irq_chip tsi108_pci_irq = {
        .typename = "tsi108_PCI_int",
-       .enable = tsi108_pci_irq_enable,
-       .disable = tsi108_pci_irq_disable,
+       .mask = tsi108_pci_irq_disable,
        .ack = tsi108_pci_irq_ack,
        .end = tsi108_pci_irq_end,
+       .unmask = tsi108_pci_irq_enable,
 };
 
 /*
@@ -399,14 +398,18 @@ void __init tsi108_pci_int_init(void)
        DBG("Tsi108_pci_int_init: initializing PCI interrupts\n");
 
        for (i = 0; i < NUM_PCI_IRQS; i++) {
-               irq_desc[i + IRQ_PCI_INTAD_BASE].handler = &tsi108_pci_irq;
+               irq_desc[i + IRQ_PCI_INTAD_BASE].chip = &tsi108_pci_irq;
                irq_desc[i + IRQ_PCI_INTAD_BASE].status |= IRQ_LEVEL;
        }
 
        init_pci_source();
 }
 
-int tsi108_irq_cascade(struct pt_regs *regs, void *unused)
+void tsi108_irq_cascade(unsigned int irq, struct irq_desc *desc,
+                           struct pt_regs *regs)
 {
-       return get_pci_source();
+       unsigned int cascade_irq = get_pci_source();
+       if (cascade_irq != NO_IRQ)
+               generic_handle_irq(cascade_irq, regs);
+       desc->chip->eoi(irq);
 }
index 35488d6..0251cab 100644 (file)
@@ -348,9 +348,9 @@ void __init setup_arch(char **cmdline_p)
        init_mm.context = (unsigned long) NO_CONTEXT;
        init_task.thread.kregs = &fake_swapper_regs;
 
-       smp_setup_cpu_possible_map();
-
        paging_init();
+
+       smp_setup_cpu_possible_map();
 }
 
 static int __init set_preferred_console(void)
index e311ade..276f228 100644 (file)
@@ -34,7 +34,6 @@
 #include <asm/tlbflush.h>
 #include <asm/cpudata.h>
 
-volatile int smp_processors_ready = 0;
 int smp_num_cpus = 1;
 volatile unsigned long cpu_callin_map[NR_CPUS] __initdata = {0,};
 unsigned char boot_cpu_id = 0;
index ba843f6..3ff4edd 100644 (file)
@@ -42,7 +42,7 @@ extern ctxd_t *srmmu_ctx_table_phys;
 
 extern void calibrate_delay(void);
 
-extern volatile int smp_processors_ready;
+static volatile int smp_processors_ready = 0;
 static int smp_highest_cpu;
 extern volatile unsigned long cpu_callin_map[NR_CPUS];
 extern cpuinfo_sparc cpu_data[NR_CPUS];
index 3b32096..7d4a649 100644 (file)
@@ -39,7 +39,6 @@ extern ctxd_t *srmmu_ctx_table_phys;
 
 extern void calibrate_delay(void);
 
-extern volatile int smp_processors_ready;
 extern volatile unsigned long cpu_callin_map[NR_CPUS];
 extern unsigned char boot_cpu_id;
 
@@ -217,7 +216,6 @@ void __init smp4m_smp_done(void)
        }
 
        /* Ok, they are spinning and ready to go. */
-       smp_processors_ready = 1;
 }
 
 /* At each hardware IRQ, we get this called to forward IRQ reception
index aae3123..3a3aee0 100644 (file)
@@ -1561,7 +1561,7 @@ restart:
                /* ->key must be copied to avoid race with cfq_exit_queue() */
                k = __cic->key;
                if (unlikely(!k)) {
-                       cfq_drop_dead_cic(ioc, cic);
+                       cfq_drop_dead_cic(ioc, __cic);
                        goto restart;
                }
 
index bc7baee..9b72dc7 100644 (file)
@@ -765,7 +765,8 @@ void elv_unregister(struct elevator_type *e)
                read_lock(&tasklist_lock);
                do_each_thread(g, p) {
                        task_lock(p);
-                       e->ops.trim(p->io_context);
+                       if (p->io_context)
+                               e->ops.trim(p->io_context);
                        task_unlock(p);
                } while_each_thread(g, p);
                read_unlock(&tasklist_lock);
index 61d6b3c..ddd9253 100644 (file)
@@ -3628,6 +3628,8 @@ struct io_context *current_io_context(gfp_t gfp_flags)
                ret->nr_batch_requests = 0; /* because this is 0 */
                ret->aic = NULL;
                ret->cic_root.rb_node = NULL;
+               /* make sure set_task_ioprio() sees the settings above */
+               smp_wmb();
                tsk->io_context = ret;
        }
 
index 96309b9..11abc7b 100644 (file)
@@ -285,6 +285,8 @@ static int __init acpi_ac_init(void)
 {
        int result;
 
+       if (acpi_disabled)
+               return -ENODEV;
 
        acpi_ac_dir = acpi_lock_ac_dir();
        if (!acpi_ac_dir)
index b0d4b14..1dda370 100644 (file)
@@ -484,10 +484,8 @@ acpi_memory_register_notify_handler(acpi_handle handle,
 
 
        status = is_memory_device(handle);
-       if (ACPI_FAILURE(status)){
-               ACPI_EXCEPTION((AE_INFO, status, "handle is no memory device"));
+       if (ACPI_FAILURE(status))
                return AE_OK;   /* continue */
-       }
 
        status = acpi_install_notify_handler(handle, ACPI_SYSTEM_NOTIFY,
                                             acpi_memory_device_notify, NULL);
@@ -503,10 +501,8 @@ acpi_memory_deregister_notify_handler(acpi_handle handle,
 
 
        status = is_memory_device(handle);
-       if (ACPI_FAILURE(status)){
-               ACPI_EXCEPTION((AE_INFO, status, "handle is no memory device"));
+       if (ACPI_FAILURE(status))
                return AE_OK;   /* continue */
-       }
 
        status = acpi_remove_notify_handler(handle,
                                            ACPI_SYSTEM_NOTIFY,
index 6e52217..9810e2a 100644 (file)
@@ -757,6 +757,9 @@ static int __init acpi_battery_init(void)
 {
        int result;
 
+       if (acpi_disabled)
+               return -ENODEV;
+
        acpi_battery_dir = acpi_lock_battery_dir();
        if (!acpi_battery_dir)
                return -ENODEV;
index b297769..279c4ba 100644 (file)
@@ -25,6 +25,7 @@
 #include <linux/module.h>
 #include <linux/init.h>
 #include <linux/ioport.h>
+#include <linux/kernel.h>
 #include <linux/list.h>
 #include <linux/sched.h>
 #include <linux/pm.h>
@@ -68,7 +69,8 @@ int acpi_bus_get_device(acpi_handle handle, struct acpi_device **device)
 
        status = acpi_get_data(handle, acpi_bus_data_handler, (void **)device);
        if (ACPI_FAILURE(status) || !*device) {
-               ACPI_EXCEPTION((AE_INFO, status, "No context for object [%p]", handle));
+               ACPI_DEBUG_PRINT((ACPI_DB_INFO, "No context for object [%p]\n",
+                                 handle));
                return -ENODEV;
        }
 
@@ -192,7 +194,7 @@ int acpi_bus_set_power(acpi_handle handle, int state)
        /* Make sure this is a valid target state */
 
        if (!device->flags.power_manageable) {
-               ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Device `[%s]' is not power manageable",
+               ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Device `[%s]' is not power manageable\n",
                                device->kobj.name));
                return -ENODEV;
        }
@@ -738,7 +740,10 @@ static int __init acpi_init(void)
                return -ENODEV;
        }
 
-       firmware_register(&acpi_subsys);
+       result = firmware_register(&acpi_subsys);
+       if (result < 0)
+               printk(KERN_WARNING "%s: firmware_register error: %d\n",
+                       __FUNCTION__, result);
 
        result = acpi_bus_init();
 
index 32c9d88..1ba2db6 100644 (file)
@@ -91,6 +91,14 @@ enum {
        HK_EVENT_ENTERRING_S5,
 };
 
+enum conf_entry_enum {
+       bus_handle = 0,
+       bus_method = 1,
+       action_handle = 2,
+       method = 3,
+       LAST_CONF_ENTRY
+};
+
 /*  procdir we use */
 static struct proc_dir_entry *hotkey_proc_dir;
 static struct proc_dir_entry *hotkey_config;
@@ -244,19 +252,15 @@ static int hotkey_info_open_fs(struct inode *inode, struct file *file)
 
 static char *format_result(union acpi_object *object)
 {
-       char *buf = NULL;
-
-       buf = (char *)kmalloc(RESULT_STR_LEN, GFP_KERNEL);
-       if (buf)
-               memset(buf, 0, RESULT_STR_LEN);
-       else
-               goto do_fail;
+       char *buf;
 
+       buf = kzalloc(RESULT_STR_LEN, GFP_KERNEL);
+       if (!buf)
+               return NULL;
        /* Now, just support integer type */
        if (object->type == ACPI_TYPE_INTEGER)
                sprintf(buf, "%d\n", (u32) object->integer.value);
-      do_fail:
-       return (buf);
+       return buf;
 }
 
 static int hotkey_polling_seq_show(struct seq_file *seq, void *offset)
@@ -486,98 +490,102 @@ static void free_hotkey_device(union acpi_hotkey *key)
 
 static void free_hotkey_buffer(union acpi_hotkey *key)
 {
+       /* key would never be null, action method could be */
        kfree(key->event_hotkey.action_method);
 }
 
 static void free_poll_hotkey_buffer(union acpi_hotkey *key)
 {
+       /* key would never be null, others could be*/
        kfree(key->poll_hotkey.action_method);
        kfree(key->poll_hotkey.poll_method);
        kfree(key->poll_hotkey.poll_result);
 }
 static int
-init_hotkey_device(union acpi_hotkey *key, char *bus_str, char *action_str,
-                  char *method, int std_num, int external_num)
+init_hotkey_device(union acpi_hotkey *key, char **config_entry,
+                  int std_num, int external_num)
 {
        acpi_handle tmp_handle;
        acpi_status status = AE_OK;
 
-
        if (std_num < 0 || IS_POLL(std_num) || !key)
                goto do_fail;
 
-       if (!bus_str || !action_str || !method)
+       if (!config_entry[bus_handle] || !config_entry[action_handle]
+                       || !config_entry[method])
                goto do_fail;
 
        key->link.hotkey_type = ACPI_HOTKEY_EVENT;
        key->link.hotkey_standard_num = std_num;
        key->event_hotkey.flag = 0;
-       key->event_hotkey.action_method = method;
+       key->event_hotkey.action_method = config_entry[method];
 
-       status =
-           acpi_get_handle(NULL, bus_str, &(key->event_hotkey.bus_handle));
+       status = acpi_get_handle(NULL, config_entry[bus_handle],
+                          &(key->event_hotkey.bus_handle));
        if (ACPI_FAILURE(status))
-               goto do_fail;
+               goto do_fail_zero;
        key->event_hotkey.external_hotkey_num = external_num;
-       status =
-           acpi_get_handle(NULL, action_str,
+       status = acpi_get_handle(NULL, config_entry[action_handle],
                            &(key->event_hotkey.action_handle));
        if (ACPI_FAILURE(status))
-               goto do_fail;
+               goto do_fail_zero;
        status = acpi_get_handle(key->event_hotkey.action_handle,
-                                method, &tmp_handle);
+                                config_entry[method], &tmp_handle);
        if (ACPI_FAILURE(status))
-               goto do_fail;
+               goto do_fail_zero;
        return AE_OK;
-      do_fail:
+do_fail_zero:
+       key->event_hotkey.action_method = NULL;
+do_fail:
        return -ENODEV;
 }
 
 static int
-init_poll_hotkey_device(union acpi_hotkey *key,
-                       char *poll_str,
-                       char *poll_method,
-                       char *action_str, char *action_method, int std_num)
+init_poll_hotkey_device(union acpi_hotkey *key, char **config_entry,
+                       int std_num)
 {
        acpi_status status = AE_OK;
        acpi_handle tmp_handle;
 
-
        if (std_num < 0 || IS_EVENT(std_num) || !key)
                goto do_fail;
-
-       if (!poll_str || !poll_method || !action_str || !action_method)
+       if (!config_entry[bus_handle] ||!config_entry[bus_method] ||
+               !config_entry[action_handle] || !config_entry[method])
                goto do_fail;
 
        key->link.hotkey_type = ACPI_HOTKEY_POLLING;
        key->link.hotkey_standard_num = std_num;
        key->poll_hotkey.flag = 0;
-       key->poll_hotkey.poll_method = poll_method;
-       key->poll_hotkey.action_method = action_method;
+       key->poll_hotkey.poll_method = config_entry[bus_method];
+       key->poll_hotkey.action_method = config_entry[method];
 
-       status =
-           acpi_get_handle(NULL, poll_str, &(key->poll_hotkey.poll_handle));
+       status = acpi_get_handle(NULL, config_entry[bus_handle],
+                     &(key->poll_hotkey.poll_handle));
        if (ACPI_FAILURE(status))
-               goto do_fail;
+               goto do_fail_zero;
        status = acpi_get_handle(key->poll_hotkey.poll_handle,
-                                poll_method, &tmp_handle);
+                                config_entry[bus_method], &tmp_handle);
        if (ACPI_FAILURE(status))
-               goto do_fail;
+               goto do_fail_zero;
        status =
-           acpi_get_handle(NULL, action_str,
+           acpi_get_handle(NULL, config_entry[action_handle],
                            &(key->poll_hotkey.action_handle));
        if (ACPI_FAILURE(status))
-               goto do_fail;
+               goto do_fail_zero;
        status = acpi_get_handle(key->poll_hotkey.action_handle,
-                                action_method, &tmp_handle);
+                                config_entry[method], &tmp_handle);
        if (ACPI_FAILURE(status))
-               goto do_fail;
+               goto do_fail_zero;
        key->poll_hotkey.poll_result =
            (union acpi_object *)kmalloc(sizeof(union acpi_object), GFP_KERNEL);
        if (!key->poll_hotkey.poll_result)
-               goto do_fail;
+               goto do_fail_zero;
        return AE_OK;
-      do_fail:
+
+do_fail_zero:
+       key->poll_hotkey.poll_method = NULL;
+       key->poll_hotkey.action_method = NULL;
+do_fail:
        return -ENODEV;
 }
 
@@ -652,17 +660,18 @@ static int hotkey_poll_config_seq_show(struct seq_file *seq, void *offset)
 }
 
 static int
-get_parms(char *config_record,
-         int *cmd,
-         char **bus_handle,
-         char **bus_method,
-         char **action_handle,
-         char **method, int *internal_event_num, int *external_event_num)
+get_parms(char *config_record, int *cmd, char **config_entry,
+              int *internal_event_num, int *external_event_num)
 {
+/* the format of *config_record =
+ * "1:\d+:*" : "cmd:internal_event_num"
+ * "\d+:\w+:\w+:\w+:\w+:\d+:\d+" :
+ * "cmd:bus_handle:bus_method:action_handle:method:internal_event_num:external_event_num"
+ */
        char *tmp, *tmp1, count;
+       int i;
 
        sscanf(config_record, "%d", cmd);
-
        if (*cmd == 1) {
                if (sscanf(config_record, "%d:%d", cmd, internal_event_num) !=
                    2)
@@ -674,59 +683,27 @@ get_parms(char *config_record,
        if (!tmp)
                goto do_fail;
        tmp++;
-       tmp1 = strchr(tmp, ':');
-       if (!tmp1)
-               goto do_fail;
-
-       count = tmp1 - tmp;
-       *bus_handle = (char *)kmalloc(count + 1, GFP_KERNEL);
-       if (!*bus_handle)
-               goto do_fail;
-       strncpy(*bus_handle, tmp, count);
-       *(*bus_handle + count) = 0;
-
-       tmp = tmp1;
-       tmp++;
-       tmp1 = strchr(tmp, ':');
-       if (!tmp1)
-               goto do_fail;
-       count = tmp1 - tmp;
-       *bus_method = (char *)kmalloc(count + 1, GFP_KERNEL);
-       if (!*bus_method)
-               goto do_fail;
-       strncpy(*bus_method, tmp, count);
-       *(*bus_method + count) = 0;
-
-       tmp = tmp1;
-       tmp++;
-       tmp1 = strchr(tmp, ':');
-       if (!tmp1)
-               goto do_fail;
-       count = tmp1 - tmp;
-       *action_handle = (char *)kmalloc(count + 1, GFP_KERNEL);
-       if (!*action_handle)
-               goto do_fail;
-       strncpy(*action_handle, tmp, count);
-       *(*action_handle + count) = 0;
-
-       tmp = tmp1;
-       tmp++;
-       tmp1 = strchr(tmp, ':');
-       if (!tmp1)
-               goto do_fail;
-       count = tmp1 - tmp;
-       *method = (char *)kmalloc(count + 1, GFP_KERNEL);
-       if (!*method)
-               goto do_fail;
-       strncpy(*method, tmp, count);
-       *(*method + count) = 0;
-
-       if (sscanf(tmp1 + 1, "%d:%d", internal_event_num, external_event_num) <=
-           0)
-               goto do_fail;
-
-       return 6;
-      do_fail:
+       for (i = 0; i < LAST_CONF_ENTRY; i++) {
+               tmp1 = strchr(tmp, ':');
+               if (!tmp1) {
+                       goto do_fail;
+               }
+               count = tmp1 - tmp;
+               config_entry[i] = kzalloc(count + 1, GFP_KERNEL);
+               if (!config_entry[i])
+                       goto handle_failure;
+               strncpy(config_entry[i], tmp, count);
+               tmp = tmp1 + 1;
+       }
+       if (sscanf(tmp, "%d:%d", internal_event_num, external_event_num) <= 0)
+               goto handle_failure;
+       if (!IS_OTHERS(*internal_event_num)) {
+               return 6;
+       }
+handle_failure:
+       while (i-- > 0)
+               kfree(config_entry[i]);
+do_fail:
        return -1;
 }
 
@@ -736,50 +713,34 @@ static ssize_t hotkey_write_config(struct file *file,
                                   size_t count, loff_t * data)
 {
        char *config_record = NULL;
-       char *bus_handle = NULL;
-       char *bus_method = NULL;
-       char *action_handle = NULL;
-       char *method = NULL;
+       char *config_entry[LAST_CONF_ENTRY];
        int cmd, internal_event_num, external_event_num;
        int ret = 0;
-       union acpi_hotkey *key = NULL;
+       union acpi_hotkey *key = kzalloc(sizeof(union acpi_hotkey), GFP_KERNEL);
 
+       if (!key)
+               return -ENOMEM;
 
-       config_record = (char *)kmalloc(count + 1, GFP_KERNEL);
-       if (!config_record)
+       config_record = kzalloc(count + 1, GFP_KERNEL);
+       if (!config_record) {
+               kfree(key);
                return -ENOMEM;
+       }
 
        if (copy_from_user(config_record, buffer, count)) {
                kfree(config_record);
+               kfree(key);
                printk(KERN_ERR PREFIX "Invalid data\n");
                return -EINVAL;
        }
-       config_record[count] = 0;
-
-       ret = get_parms(config_record,
-                       &cmd,
-                       &bus_handle,
-                       &bus_method,
-                       &action_handle,
-                       &method, &internal_event_num, &external_event_num);
-
+       ret = get_parms(config_record, &cmd, config_entry,
+                      &internal_event_num, &external_event_num);
        kfree(config_record);
-       if (IS_OTHERS(internal_event_num))
-               goto do_fail;
        if (ret != 6) {
-             do_fail:
-               kfree(bus_handle);
-               kfree(bus_method);
-               kfree(action_handle);
-               kfree(method);
                printk(KERN_ERR PREFIX "Invalid data format ret=%d\n", ret);
                return -EINVAL;
        }
 
-       key = kmalloc(sizeof(union acpi_hotkey), GFP_KERNEL);
-       if (!key)
-               goto do_fail;
-       memset(key, 0, sizeof(union acpi_hotkey));
        if (cmd == 1) {
                union acpi_hotkey *tmp = NULL;
                tmp = get_hotkey_by_event(&global_hotkey_list,
@@ -791,34 +752,19 @@ static ssize_t hotkey_write_config(struct file *file,
                goto cont_cmd;
        }
        if (IS_EVENT(internal_event_num)) {
-               kfree(bus_method);
-               ret = init_hotkey_device(key, bus_handle, action_handle, method,
-                                        internal_event_num,
-                                        external_event_num);
-       } else
-               ret = init_poll_hotkey_device(key, bus_handle, bus_method,
-                                             action_handle, method,
-                                             internal_event_num);
-       if (ret) {
-               kfree(bus_handle);
-               kfree(action_handle);
-               if (IS_EVENT(internal_event_num))
-                       free_hotkey_buffer(key);
-               else
-                       free_poll_hotkey_buffer(key);
-               kfree(key);
-               printk(KERN_ERR PREFIX "Invalid hotkey\n");
-               return -EINVAL;
+               if (init_hotkey_device(key, config_entry,
+                       internal_event_num, external_event_num))
+                       goto init_hotkey_fail;
+       } else {
+               if (init_poll_hotkey_device(key, config_entry,
+                              internal_event_num))
+                       goto init_poll_hotkey_fail;
        }
-
-      cont_cmd:
-       kfree(bus_handle);
-       kfree(action_handle);
-
+cont_cmd:
        switch (cmd) {
        case 0:
-               if (get_hotkey_by_event
-                   (&global_hotkey_list, key->link.hotkey_standard_num))
+               if (get_hotkey_by_event(&global_hotkey_list,
+                               key->link.hotkey_standard_num))
                        goto fail_out;
                else
                        hotkey_add(key);
@@ -827,6 +773,7 @@ static ssize_t hotkey_write_config(struct file *file,
                hotkey_remove(key);
                break;
        case 2:
+               /* key is kfree()ed if matched*/
                if (hotkey_update(key))
                        goto fail_out;
                break;
@@ -835,11 +782,22 @@ static ssize_t hotkey_write_config(struct file *file,
                break;
        }
        return count;
-      fail_out:
-       if (IS_EVENT(internal_event_num))
-               free_hotkey_buffer(key);
-       else
-               free_poll_hotkey_buffer(key);
+
+init_poll_hotkey_fail:         /* failed init_poll_hotkey_device */
+       kfree(config_entry[bus_method]);
+       config_entry[bus_method] = NULL;
+init_hotkey_fail:              /* failed init_hotkey_device */
+       kfree(config_entry[method]);
+fail_out:
+       kfree(config_entry[bus_handle]);
+       kfree(config_entry[action_handle]);
+       /* No double free since elements =NULL for error cases */
+       if (IS_EVENT(internal_event_num)) {
+               if (config_entry[bus_method])
+                       kfree(config_entry[bus_method]);
+               free_hotkey_buffer(key);        /* frees [method] */
+       } else
+               free_poll_hotkey_buffer(key);  /* frees [bus_method]+[method] */
        kfree(key);
        printk(KERN_ERR PREFIX "invalid key\n");
        return -EINVAL;
@@ -923,10 +881,9 @@ static ssize_t hotkey_execute_aml_method(struct file *file,
        union acpi_hotkey *key;
 
 
-       arg = (char *)kmalloc(count + 1, GFP_KERNEL);
+       arg = kzalloc(count + 1, GFP_KERNEL);
        if (!arg)
                return -ENOMEM;
-       arg[count] = 0;
 
        if (copy_from_user(arg, buffer, count)) {
                kfree(arg);
index 84239d5..6809c28 100644 (file)
@@ -330,7 +330,7 @@ static int acpi_ec_hc_add(struct acpi_device *device)
        status = acpi_evaluate_integer(ec_hc->handle, "_EC", NULL, &val);
        if (ACPI_FAILURE(status)) {
                ACPI_DEBUG_PRINT((ACPI_DB_WARN, "Error obtaining _EC\n"));
-               kfree(ec_hc->smbus);
+               kfree(ec_hc);
                kfree(smbus);
                return -EIO;
        }
index b7d1514..507f051 100644 (file)
@@ -746,6 +746,16 @@ acpi_status acpi_os_wait_semaphore(acpi_handle handle, u32 units, u16 timeout)
        ACPI_DEBUG_PRINT((ACPI_DB_MUTEX, "Waiting for semaphore[%p|%d|%d]\n",
                          handle, units, timeout));
 
+       /*
+        * This can be called during resume with interrupts off.
+        * Like boot-time, we should be single threaded and will
+        * always get the lock if we try -- timeout or not.
+        * If this doesn't succeed, then we will oops courtesy of
+        * might_sleep() in down().
+        */
+       if (!down_trylock(sem))
+               return AE_OK;
+
        switch (timeout) {
                /*
                 * No Wait:
index db7b350..62bef0b 100644 (file)
@@ -1714,6 +1714,9 @@ static int __init acpi_sbs_init(void)
 {
        int result = 0;
 
+       if (acpi_disabled)
+               return -ENODEV;
+
        init_MUTEX(&sbs_sem);
 
        if (capacity_mode != DEF_CAPACITY_UNIT
index 5fcb50c..698a154 100644 (file)
@@ -4,6 +4,7 @@
 
 #include <linux/module.h>
 #include <linux/init.h>
+#include <linux/kernel.h>
 #include <linux/acpi.h>
 
 #include <acpi/acpi_drivers.h>
@@ -113,6 +114,8 @@ static struct kset acpi_namespace_kset = {
 static void acpi_device_register(struct acpi_device *device,
                                 struct acpi_device *parent)
 {
+       int err;
+
        /*
         * Linkage
         * -------
@@ -138,7 +141,10 @@ static void acpi_device_register(struct acpi_device *device,
                device->kobj.parent = &parent->kobj;
        device->kobj.ktype = &ktype_acpi_ns;
        device->kobj.kset = &acpi_namespace_kset;
-       kobject_register(&device->kobj);
+       err = kobject_register(&device->kobj);
+       if (err < 0)
+               printk(KERN_WARNING "%s: kobject_register error: %d\n",
+                       __FUNCTION__, err);
        create_sysfs_device_files(device);
 }
 
@@ -1450,7 +1456,9 @@ static int __init acpi_scan_init(void)
        if (acpi_disabled)
                return 0;
 
-       kset_register(&acpi_namespace_kset);
+       result = kset_register(&acpi_namespace_kset);
+       if (result < 0)
+               printk(KERN_ERR PREFIX "kset_register error: %d\n", result);
 
        result = bus_register(&acpi_bus_type);
        if (result) {
index f48227f..d0d84c4 100644 (file)
@@ -262,7 +262,7 @@ acpi_evaluate_integer(acpi_handle handle,
        if (!data)
                return AE_BAD_PARAMETER;
 
-       element = kmalloc(sizeof(union acpi_object), GFP_KERNEL);
+       element = kmalloc(sizeof(union acpi_object), irqs_disabled() ? GFP_ATOMIC: GFP_KERNEL);
        if (!element)
                return AE_NO_MEMORY;
 
index d7de175..e9b0957 100644 (file)
@@ -64,7 +64,7 @@ static ssize_t node_read_meminfo(struct sys_device * dev, char * buf)
                       "Node %d Mapped:       %8lu kB\n"
                       "Node %d AnonPages:    %8lu kB\n"
                       "Node %d PageTables:   %8lu kB\n"
-                      "Node %d NFS Unstable: %8lu kB\n"
+                      "Node %d NFS_Unstable: %8lu kB\n"
                       "Node %d Bounce:       %8lu kB\n"
                       "Node %d Slab:         %8lu kB\n",
                       nid, K(i.totalram),
index b6ee50a..fa70824 100644 (file)
@@ -266,7 +266,7 @@ repeat:
                goto out;
 
        if (req->cmd != READ) {
-               printk("GSCD: bad cmd %lu\n", rq_data_dir(req));
+               printk("GSCD: bad cmd %u\n", rq_data_dir(req));
                end_request(req, 0);
                goto repeat;
        }
index 4ea7bd5..a369dd6 100644 (file)
@@ -142,6 +142,7 @@ typedef struct _moxa_board_conf {
 
 static moxa_board_conf moxa_boards[MAX_BOARDS];
 static void __iomem *moxaBaseAddr[MAX_BOARDS];
+static int loadstat[MAX_BOARDS];
 
 struct moxa_str {
        int type;
@@ -1688,6 +1689,8 @@ int MoxaDriverPoll(void)
        if (moxaCard == 0)
                return (-1);
        for (card = 0; card < MAX_BOARDS; card++) {
+               if (loadstat[card] == 0)
+                       continue;
                if ((ports = moxa_boards[card].numPorts) == 0)
                        continue;
                if (readb(moxaIntPend[card]) == 0xff) {
@@ -2903,6 +2906,7 @@ static int moxaloadcode(int cardno, unsigned char __user *tmp, int len)
                }
                break;
        }
+       loadstat[cardno] = 1;
        return (0);
 }
 
@@ -2920,7 +2924,7 @@ static int moxaloadc218(int cardno, void __iomem *baseAddr, int len)
        len1 = len >> 1;
        ptr = (ushort *) moxaBuff;
        for (i = 0; i < len1; i++)
-               usum += *(ptr + i);
+               usum += le16_to_cpu(*(ptr + i));
        retry = 0;
        do {
                len1 = len >> 1;
@@ -2992,7 +2996,7 @@ static int moxaloadc320(int cardno, void __iomem *baseAddr, int len, int *numPor
        wlen = len >> 1;
        uptr = (ushort *) moxaBuff;
        for (i = 0; i < wlen; i++)
-               usum += uptr[i];
+               usum += le16_to_cpu(uptr[i]);
        retry = 0;
        j = 0;
        do {
index bfdb902..bb0d919 100644 (file)
@@ -153,6 +153,15 @@ int tty_ioctl(struct inode * inode, struct file * file,
 static int tty_fasync(int fd, struct file * filp, int on);
 static void release_mem(struct tty_struct *tty, int idx);
 
+/**
+ *     alloc_tty_struct        -       allocate a tty object
+ *
+ *     Return a new empty tty structure. The data fields have not
+ *     been initialized in any way but has been zeroed
+ *
+ *     Locking: none
+ *     FIXME: use kzalloc
+ */
 
 static struct tty_struct *alloc_tty_struct(void)
 {
@@ -166,6 +175,15 @@ static struct tty_struct *alloc_tty_struct(void)
 
 static void tty_buffer_free_all(struct tty_struct *);
 
+/**
+ *     free_tty_struct         -       free a disused tty
+ *     @tty: tty struct to free
+ *
+ *     Free the write buffers, tty queue and tty memory itself.
+ *
+ *     Locking: none. Must be called after tty is definitely unused
+ */
+
 static inline void free_tty_struct(struct tty_struct *tty)
 {
        kfree(tty->write_buf);
@@ -175,6 +193,17 @@ static inline void free_tty_struct(struct tty_struct *tty)
 
 #define TTY_NUMBER(tty) ((tty)->index + (tty)->driver->name_base)
 
+/**
+ *     tty_name        -       return tty naming
+ *     @tty: tty structure
+ *     @buf: buffer for output
+ *
+ *     Convert a tty structure into a name. The name reflects the kernel
+ *     naming policy and if udev is in use may not reflect user space
+ *
+ *     Locking: none
+ */
+
 char *tty_name(struct tty_struct *tty, char *buf)
 {
        if (!tty) /* Hmm.  NULL pointer.  That's fun. */
@@ -235,6 +264,28 @@ static int check_tty_count(struct tty_struct *tty, const char *routine)
  * Tty buffer allocation management
  */
 
+
+/**
+ *     tty_buffer_free_all             -       free buffers used by a tty
+ *     @tty: tty to free from
+ *
+ *     Remove all the buffers pending on a tty whether queued with data
+ *     or in the free ring. Must be called when the tty is no longer in use
+ *
+ *     Locking: none
+ */
+
+
+/**
+ *     tty_buffer_free_all             -       free buffers used by a tty
+ *     @tty: tty to free from
+ *
+ *     Remove all the buffers pending on a tty whether queued with data
+ *     or in the free ring. Must be called when the tty is no longer in use
+ *
+ *     Locking: none
+ */
+
 static void tty_buffer_free_all(struct tty_struct *tty)
 {
        struct tty_buffer *thead;
@@ -247,19 +298,47 @@ static void tty_buffer_free_all(struct tty_struct *tty)
                kfree(thead);
        }
        tty->buf.tail = NULL;
+       tty->buf.memory_used = 0;
 }
 
+/**
+ *     tty_buffer_init         -       prepare a tty buffer structure
+ *     @tty: tty to initialise
+ *
+ *     Set up the initial state of the buffer management for a tty device.
+ *     Must be called before the other tty buffer functions are used.
+ *
+ *     Locking: none
+ */
+
 static void tty_buffer_init(struct tty_struct *tty)
 {
        spin_lock_init(&tty->buf.lock);
        tty->buf.head = NULL;
        tty->buf.tail = NULL;
        tty->buf.free = NULL;
+       tty->buf.memory_used = 0;
 }
 
-static struct tty_buffer *tty_buffer_alloc(size_t size)
+/**
+ *     tty_buffer_alloc        -       allocate a tty buffer
+ *     @tty: tty device
+ *     @size: desired size (characters)
+ *
+ *     Allocate a new tty buffer to hold the desired number of characters.
+ *     Return NULL if out of memory or the allocation would exceed the
+ *     per device queue
+ *
+ *     Locking: Caller must hold tty->buf.lock
+ */
+
+static struct tty_buffer *tty_buffer_alloc(struct tty_struct *tty, size_t size)
 {
-       struct tty_buffer *p = kmalloc(sizeof(struct tty_buffer) + 2 * size, GFP_ATOMIC);
+       struct tty_buffer *p;
+
+       if (tty->buf.memory_used + size > 65536)
+               return NULL;
+       p = kmalloc(sizeof(struct tty_buffer) + 2 * size, GFP_ATOMIC);
        if(p == NULL)
                return NULL;
        p->used = 0;
@@ -269,17 +348,27 @@ static struct tty_buffer *tty_buffer_alloc(size_t size)
        p->read = 0;
        p->char_buf_ptr = (char *)(p->data);
        p->flag_buf_ptr = (unsigned char *)p->char_buf_ptr + size;
-/*     printk("Flip create %p\n", p); */
+       tty->buf.memory_used += size;
        return p;
 }
 
-/* Must be called with the tty_read lock held. This needs to acquire strategy
-   code to decide if we should kfree or relink a given expired buffer */
+/**
+ *     tty_buffer_free         -       free a tty buffer
+ *     @tty: tty owning the buffer
+ *     @b: the buffer to free
+ *
+ *     Free a tty buffer, or add it to the free list according to our
+ *     internal strategy
+ *
+ *     Locking: Caller must hold tty->buf.lock
+ */
 
 static void tty_buffer_free(struct tty_struct *tty, struct tty_buffer *b)
 {
        /* Dumb strategy for now - should keep some stats */
-/*     printk("Flip dispose %p\n", b); */
+       tty->buf.memory_used -= b->size;
+       WARN_ON(tty->buf.memory_used < 0);
+
        if(b->size >= 512)
                kfree(b);
        else {
@@ -288,6 +377,18 @@ static void tty_buffer_free(struct tty_struct *tty, struct tty_buffer *b)
        }
 }
 
+/**
+ *     tty_buffer_find         -       find a free tty buffer
+ *     @tty: tty owning the buffer
+ *     @size: characters wanted
+ *
+ *     Locate an existing suitable tty buffer or if we are lacking one then
+ *     allocate a new one. We round our buffers off in 256 character chunks
+ *     to get better allocation behaviour.
+ *
+ *     Locking: Caller must hold tty->buf.lock
+ */
+
 static struct tty_buffer *tty_buffer_find(struct tty_struct *tty, size_t size)
 {
        struct tty_buffer **tbh = &tty->buf.free;
@@ -299,20 +400,28 @@ static struct tty_buffer *tty_buffer_find(struct tty_struct *tty, size_t size)
                        t->used = 0;
                        t->commit = 0;
                        t->read = 0;
-                       /* DEBUG ONLY */
-/*                     memset(t->data, '*', size); */
-/*                     printk("Flip recycle %p\n", t); */
+                       tty->buf.memory_used += t->size;
                        return t;
                }
                tbh = &((*tbh)->next);
        }
        /* Round the buffer size out */
        size = (size + 0xFF) & ~ 0xFF;
-       return tty_buffer_alloc(size);
+       return tty_buffer_alloc(tty, size);
        /* Should possibly check if this fails for the largest buffer we
           have queued and recycle that ? */
 }
 
+/**
+ *     tty_buffer_request_room         -       grow tty buffer if needed
+ *     @tty: tty structure
+ *     @size: size desired
+ *
+ *     Make at least size bytes of linear space available for the tty
+ *     buffer. If we fail return the size we managed to find.
+ *
+ *     Locking: Takes tty->buf.lock
+ */
 int tty_buffer_request_room(struct tty_struct *tty, size_t size)
 {
        struct tty_buffer *b, *n;
@@ -347,6 +456,18 @@ int tty_buffer_request_room(struct tty_struct *tty, size_t size)
 }
 EXPORT_SYMBOL_GPL(tty_buffer_request_room);
 
+/**
+ *     tty_insert_flip_string  -       Add characters to the tty buffer
+ *     @tty: tty structure
+ *     @chars: characters
+ *     @size: size
+ *
+ *     Queue a series of bytes to the tty buffering. All the characters
+ *     passed are marked as without error. Returns the number added.
+ *
+ *     Locking: Called functions may take tty->buf.lock
+ */
+
 int tty_insert_flip_string(struct tty_struct *tty, const unsigned char *chars,
                                size_t size)
 {
@@ -370,6 +491,20 @@ int tty_insert_flip_string(struct tty_struct *tty, const unsigned char *chars,
 }
 EXPORT_SYMBOL(tty_insert_flip_string);
 
+/**
+ *     tty_insert_flip_string_flags    -       Add characters to the tty buffer
+ *     @tty: tty structure
+ *     @chars: characters
+ *     @flags: flag bytes
+ *     @size: size
+ *
+ *     Queue a series of bytes to the tty buffering. For each character
+ *     the flags array indicates the status of the character. Returns the
+ *     number added.
+ *
+ *     Locking: Called functions may take tty->buf.lock
+ */
+
 int tty_insert_flip_string_flags(struct tty_struct *tty,
                const unsigned char *chars, const char *flags, size_t size)
 {
@@ -394,6 +529,17 @@ int tty_insert_flip_string_flags(struct tty_struct *tty,
 }
 EXPORT_SYMBOL(tty_insert_flip_string_flags);
 
+/**
+ *     tty_schedule_flip       -       push characters to ldisc
+ *     @tty: tty to push from
+ *
+ *     Takes any pending buffers and transfers their ownership to the
+ *     ldisc side of the queue. It then schedules those characters for
+ *     processing by the line discipline.
+ *
+ *     Locking: Takes tty->buf.lock
+ */
+
 void tty_schedule_flip(struct tty_struct *tty)
 {
        unsigned long flags;
@@ -405,12 +551,19 @@ void tty_schedule_flip(struct tty_struct *tty)
 }
 EXPORT_SYMBOL(tty_schedule_flip);
 
-/*
+/**
+ *     tty_prepare_flip_string         -       make room for characters
+ *     @tty: tty
+ *     @chars: return pointer for character write area
+ *     @size: desired size
+ *
  *     Prepare a block of space in the buffer for data. Returns the length
  *     available and buffer pointer to the space which is now allocated and
  *     accounted for as ready for normal characters. This is used for drivers
  *     that need their own block copy routines into the buffer. There is no
  *     guarantee the buffer is a DMA target!
+ *
+ *     Locking: May call functions taking tty->buf.lock
  */
 
 int tty_prepare_flip_string(struct tty_struct *tty, unsigned char **chars, size_t size)
@@ -427,12 +580,20 @@ int tty_prepare_flip_string(struct tty_struct *tty, unsigned char **chars, size_
 
 EXPORT_SYMBOL_GPL(tty_prepare_flip_string);
 
-/*
+/**
+ *     tty_prepare_flip_string_flags   -       make room for characters
+ *     @tty: tty
+ *     @chars: return pointer for character write area
+ *     @flags: return pointer for status flag write area
+ *     @size: desired size
+ *
  *     Prepare a block of space in the buffer for data. Returns the length
  *     available and buffer pointer to the space which is now allocated and
  *     accounted for as ready for characters. This is used for drivers
  *     that need their own block copy routines into the buffer. There is no
  *     guarantee the buffer is a DMA target!
+ *
+ *     Locking: May call functions taking tty->buf.lock
  */
 
 int tty_prepare_flip_string_flags(struct tty_struct *tty, unsigned char **chars, char **flags, size_t size)
@@ -451,10 +612,16 @@ EXPORT_SYMBOL_GPL(tty_prepare_flip_string_flags);
 
 
 
-/*
+/**
+ *     tty_set_termios_ldisc           -       set ldisc field
+ *     @tty: tty structure
+ *     @num: line discipline number
+ *
  *     This is probably overkill for real world processors but
  *     they are not on hot paths so a little discipline won't do 
  *     any harm.
+ *
+ *     Locking: takes termios_sem
  */
  
 static void tty_set_termios_ldisc(struct tty_struct *tty, int num)
@@ -474,6 +641,19 @@ static DEFINE_SPINLOCK(tty_ldisc_lock);
 static DECLARE_WAIT_QUEUE_HEAD(tty_ldisc_wait);
 static struct tty_ldisc tty_ldiscs[NR_LDISCS]; /* line disc dispatch table */
 
+/**
+ *     tty_register_ldisc      -       install a line discipline
+ *     @disc: ldisc number
+ *     @new_ldisc: pointer to the ldisc object
+ *
+ *     Installs a new line discipline into the kernel. The discipline
+ *     is set up as unreferenced and then made available to the kernel
+ *     from this point onwards.
+ *
+ *     Locking:
+ *             takes tty_ldisc_lock to guard against ldisc races
+ */
+
 int tty_register_ldisc(int disc, struct tty_ldisc *new_ldisc)
 {
        unsigned long flags;
@@ -493,6 +673,18 @@ int tty_register_ldisc(int disc, struct tty_ldisc *new_ldisc)
 }
 EXPORT_SYMBOL(tty_register_ldisc);
 
+/**
+ *     tty_unregister_ldisc    -       unload a line discipline
+ *     @disc: ldisc number
+ *     @new_ldisc: pointer to the ldisc object
+ *
+ *     Remove a line discipline from the kernel providing it is not
+ *     currently in use.
+ *
+ *     Locking:
+ *             takes tty_ldisc_lock to guard against ldisc races
+ */
+
 int tty_unregister_ldisc(int disc)
 {
        unsigned long flags;
@@ -512,6 +704,19 @@ int tty_unregister_ldisc(int disc)
 }
 EXPORT_SYMBOL(tty_unregister_ldisc);
 
+/**
+ *     tty_ldisc_get           -       take a reference to an ldisc
+ *     @disc: ldisc number
+ *
+ *     Takes a reference to a line discipline. Deals with refcounts and
+ *     module locking counts. Returns NULL if the discipline is not available.
+ *     Returns a pointer to the discipline and bumps the ref count if it is
+ *     available
+ *
+ *     Locking:
+ *             takes tty_ldisc_lock to guard against ldisc races
+ */
+
 struct tty_ldisc *tty_ldisc_get(int disc)
 {
        unsigned long flags;
@@ -540,6 +745,17 @@ struct tty_ldisc *tty_ldisc_get(int disc)
 
 EXPORT_SYMBOL_GPL(tty_ldisc_get);
 
+/**
+ *     tty_ldisc_put           -       drop ldisc reference
+ *     @disc: ldisc number
+ *
+ *     Drop a reference to a line discipline. Manage refcounts and
+ *     module usage counts
+ *
+ *     Locking:
+ *             takes tty_ldisc_lock to guard against ldisc races
+ */
+
 void tty_ldisc_put(int disc)
 {
        struct tty_ldisc *ld;
@@ -557,6 +773,19 @@ void tty_ldisc_put(int disc)
        
 EXPORT_SYMBOL_GPL(tty_ldisc_put);
 
+/**
+ *     tty_ldisc_assign        -       set ldisc on a tty
+ *     @tty: tty to assign
+ *     @ld: line discipline
+ *
+ *     Install an instance of a line discipline into a tty structure. The
+ *     ldisc must have a reference count above zero to ensure it remains/
+ *     The tty instance refcount starts at zero.
+ *
+ *     Locking:
+ *             Caller must hold references
+ */
+
 static void tty_ldisc_assign(struct tty_struct *tty, struct tty_ldisc *ld)
 {
        tty->ldisc = *ld;
@@ -571,6 +800,8 @@ static void tty_ldisc_assign(struct tty_struct *tty, struct tty_ldisc *ld)
  *     the tty ldisc. Return 0 on failure or 1 on success. This is
  *     used to implement both the waiting and non waiting versions
  *     of tty_ldisc_ref
+ *
+ *     Locking: takes tty_ldisc_lock
  */
 
 static int tty_ldisc_try(struct tty_struct *tty)
@@ -602,6 +833,8 @@ static int tty_ldisc_try(struct tty_struct *tty)
  *     must also be careful not to hold other locks that will deadlock
  *     against a discipline change, such as an existing ldisc reference
  *     (which we check for)
+ *
+ *     Locking: call functions take tty_ldisc_lock
  */
  
 struct tty_ldisc *tty_ldisc_ref_wait(struct tty_struct *tty)
@@ -622,6 +855,8 @@ EXPORT_SYMBOL_GPL(tty_ldisc_ref_wait);
  *     Dereference the line discipline for the terminal and take a 
  *     reference to it. If the line discipline is in flux then 
  *     return NULL. Can be called from IRQ and timer functions.
+ *
+ *     Locking: called functions take tty_ldisc_lock
  */
  
 struct tty_ldisc *tty_ldisc_ref(struct tty_struct *tty)
@@ -639,6 +874,8 @@ EXPORT_SYMBOL_GPL(tty_ldisc_ref);
  *
  *     Undoes the effect of tty_ldisc_ref or tty_ldisc_ref_wait. May
  *     be called in IRQ context.
+ *
+ *     Locking: takes tty_ldisc_lock
  */
  
 void tty_ldisc_deref(struct tty_ldisc *ld)
@@ -683,6 +920,9 @@ static void tty_ldisc_enable(struct tty_struct *tty)
  *
  *     Set the discipline of a tty line. Must be called from a process
  *     context.
+ *
+ *     Locking: takes tty_ldisc_lock.
+ *             called functions take termios_sem
  */
  
 static int tty_set_ldisc(struct tty_struct *tty, int ldisc)
@@ -846,9 +1086,17 @@ restart:
        return retval;
 }
 
-/*
- * This routine returns a tty driver structure, given a device number
+/**
+ *     get_tty_driver          -       find device of a tty
+ *     @dev_t: device identifier
+ *     @index: returns the index of the tty
+ *
+ *     This routine returns a tty driver structure, given a device number
+ *     and also passes back the index number.
+ *
+ *     Locking: caller must hold tty_mutex
  */
+
 static struct tty_driver *get_tty_driver(dev_t device, int *index)
 {
        struct tty_driver *p;
@@ -863,11 +1111,17 @@ static struct tty_driver *get_tty_driver(dev_t device, int *index)
        return NULL;
 }
 
-/*
- * If we try to write to, or set the state of, a terminal and we're
- * not in the foreground, send a SIGTTOU.  If the signal is blocked or
- * ignored, go ahead and perform the operation.  (POSIX 7.2)
+/**
+ *     tty_check_change        -       check for POSIX terminal changes
+ *     @tty: tty to check
+ *
+ *     If we try to write to, or set the state of, a terminal and we're
+ *     not in the foreground, send a SIGTTOU.  If the signal is blocked or
+ *     ignored, go ahead and perform the operation.  (POSIX 7.2)
+ *
+ *     Locking: none
  */
+
 int tty_check_change(struct tty_struct * tty)
 {
        if (current->signal->tty != tty)
@@ -1005,10 +1259,27 @@ void tty_ldisc_flush(struct tty_struct *tty)
 
 EXPORT_SYMBOL_GPL(tty_ldisc_flush);
        
-/*
- * This can be called by the "eventd" kernel thread.  That is process synchronous,
- * but doesn't hold any locks, so we need to make sure we have the appropriate
- * locks for what we're doing..
+/**
+ *     do_tty_hangup           -       actual handler for hangup events
+ *     @data: tty device
+ *
+ *     This can be called by the "eventd" kernel thread.  That is process
+ *     synchronous but doesn't hold any locks, so we need to make sure we
+ *     have the appropriate locks for what we're doing.
+ *
+ *     The hangup event clears any pending redirections onto the hung up
+ *     device. It ensures future writes will error and it does the needed
+ *     line discipline hangup and signal delivery. The tty object itself
+ *     remains intact.
+ *
+ *     Locking:
+ *             BKL
+ *             redirect lock for undoing redirection
+ *             file list lock for manipulating list of ttys
+ *             tty_ldisc_lock from called functions
+ *             termios_sem resetting termios data
+ *             tasklist_lock to walk task list for hangup event
+ *
  */
 static void do_tty_hangup(void *data)
 {
@@ -1133,6 +1404,14 @@ static void do_tty_hangup(void *data)
                fput(f);
 }
 
+/**
+ *     tty_hangup              -       trigger a hangup event
+ *     @tty: tty to hangup
+ *
+ *     A carrier loss (virtual or otherwise) has occurred on this like
+ *     schedule a hangup sequence to run after this event.
+ */
+
 void tty_hangup(struct tty_struct * tty)
 {
 #ifdef TTY_DEBUG_HANGUP
@@ -1145,6 +1424,15 @@ void tty_hangup(struct tty_struct * tty)
 
 EXPORT_SYMBOL(tty_hangup);
 
+/**
+ *     tty_vhangup             -       process vhangup
+ *     @tty: tty to hangup
+ *
+ *     The user has asked via system call for the terminal to be hung up.
+ *     We do this synchronously so that when the syscall returns the process
+ *     is complete. That guarantee is neccessary for security reasons.
+ */
+
 void tty_vhangup(struct tty_struct * tty)
 {
 #ifdef TTY_DEBUG_HANGUP
@@ -1156,6 +1444,14 @@ void tty_vhangup(struct tty_struct * tty)
 }
 EXPORT_SYMBOL(tty_vhangup);
 
+/**
+ *     tty_hung_up_p           -       was tty hung up
+ *     @filp: file pointer of tty
+ *
+ *     Return true if the tty has been subject to a vhangup or a carrier
+ *     loss
+ */
+
 int tty_hung_up_p(struct file * filp)
 {
        return (filp->f_op == &hung_up_tty_fops);
@@ -1163,19 +1459,28 @@ int tty_hung_up_p(struct file * filp)
 
 EXPORT_SYMBOL(tty_hung_up_p);
 
-/*
- * This function is typically called only by the session leader, when
- * it wants to disassociate itself from its controlling tty.
+/**
+ *     disassociate_ctty       -       disconnect controlling tty
+ *     @on_exit: true if exiting so need to "hang up" the session
+ *
+ *     This function is typically called only by the session leader, when
+ *     it wants to disassociate itself from its controlling tty.
  *
- * It performs the following functions:
+ *     It performs the following functions:
  *     (1)  Sends a SIGHUP and SIGCONT to the foreground process group
  *     (2)  Clears the tty from being controlling the session
  *     (3)  Clears the controlling tty for all processes in the
  *             session group.
  *
- * The argument on_exit is set to 1 if called when a process is
- * exiting; it is 0 if called by the ioctl TIOCNOTTY.
+ *     The argument on_exit is set to 1 if called when a process is
+ *     exiting; it is 0 if called by the ioctl TIOCNOTTY.
+ *
+ *     Locking: tty_mutex is taken to protect current->signal->tty
+ *             BKL is taken for hysterical raisins
+ *             Tasklist lock is taken (under tty_mutex) to walk process
+ *             lists for the session.
  */
+
 void disassociate_ctty(int on_exit)
 {
        struct tty_struct *tty;
@@