</authorgroup>
<copyright>
- <year>2003</year>
+ <year>2003-2005</year>
<holder>Jeff Garzik</holder>
</copyright>
<toc></toc>
- <chapter id="libataThanks">
- <title>Thanks</title>
+ <chapter id="libataIntroduction">
+ <title>Introduction</title>
<para>
- The bulk of the ATA knowledge comes thanks to long conversations with
- Andre Hedrick (www.linux-ide.org).
+ libATA is a library used inside the Linux kernel to support ATA host
+ controllers and devices. libATA provides an ATA driver API, class
+ transports for ATA and ATAPI devices, and SCSI<->ATA translation
+ for ATA devices according to the T10 SAT specification.
</para>
<para>
- Thanks to Alan Cox for pointing out similarities
- between SATA and SCSI, and in general for motivation to hack on
- libata.
- </para>
- <para>
- libata's device detection
- method, ata_pio_devchk, and in general all the early probing was
- based on extensive study of Hale Landis's probe/reset code in his
- ATADRVR driver (www.ata-atapi.com).
+ This Guide documents the libATA driver API, library functions, library
+ internals, and a couple sample ATA low-level drivers.
</para>
</chapter>
<chapter id="libataDriverApi">
<title>libata Driver API</title>
+ <para>
+ struct ata_port_operations is defined for every low-level libata
+ hardware driver, and it controls how the low-level driver
+ interfaces with the ATA and SCSI layers.
+ </para>
+ <para>
+ FIS-based drivers will hook into the system with ->qc_prep() and
+ ->qc_issue() high-level hooks. Hardware which behaves in a manner
+ similar to PCI IDE hardware may utilize several generic helpers,
+ defining at a bare minimum the bus I/O addresses of the ATA shadow
+ register blocks.
+ </para>
<sect1>
<title>struct ata_port_operations</title>
+ <sect2><title>Disable ATA port</title>
<programlisting>
void (*port_disable) (struct ata_port *);
</programlisting>
unplug).
</para>
+ </sect2>
+
+ <sect2><title>Post-IDENTIFY device configuration</title>
<programlisting>
void (*dev_config) (struct ata_port *, struct ata_device *);
</programlisting>
issue of SET FEATURES - XFER MODE, and prior to operation.
</para>
+ </sect2>
+
+ <sect2><title>Set PIO/DMA mode</title>
<programlisting>
void (*set_piomode) (struct ata_port *, struct ata_device *);
void (*set_dmamode) (struct ata_port *, struct ata_device *);
->set_dma_mode() is only called if DMA is possible.
</para>
+ </sect2>
+
+ <sect2><title>Taskfile read/write</title>
<programlisting>
void (*tf_load) (struct ata_port *ap, struct ata_taskfile *tf);
void (*tf_read) (struct ata_port *ap, struct ata_taskfile *tf);
taskfile register values.
</para>
+ </sect2>
+
+ <sect2><title>ATA command execute</title>
<programlisting>
void (*exec_command)(struct ata_port *ap, struct ata_taskfile *tf);
</programlisting>
->tf_load(), to be initiated in hardware.
</para>
+ </sect2>
+
+ <sect2><title>Per-cmd ATAPI DMA capabilities filter</title>
+ <programlisting>
+int (*check_atapi_dma) (struct ata_queued_cmd *qc);
+ </programlisting>
+
+ <para>
+Allow low-level driver to filter ATA PACKET commands, returning a status
+indicating whether or not it is OK to use DMA for the supplied PACKET
+command.
+ </para>
+
+ </sect2>
+
+ <sect2><title>Read specific ATA shadow registers</title>
<programlisting>
u8 (*check_status)(struct ata_port *ap);
-void (*dev_select)(struct ata_port *ap, unsigned int device);
+u8 (*check_altstatus)(struct ata_port *ap);
+u8 (*check_err)(struct ata_port *ap);
</programlisting>
<para>
- Reads the Status ATA shadow register from hardware. On some
- hardware, this has the side effect of clearing the interrupt
- condition.
+ Reads the Status/AltStatus/Error ATA shadow register from
+ hardware. On some hardware, reading the Status register has
+ the side effect of clearing the interrupt condition.
</para>
+ </sect2>
+
+ <sect2><title>Select ATA device on bus</title>
<programlisting>
void (*dev_select)(struct ata_port *ap, unsigned int device);
</programlisting>
<para>
Issues the low-level hardware command(s) that causes one of N
hardware devices to be considered 'selected' (active and
- available for use) on the ATA bus.
+ available for use) on the ATA bus. This generally has no
+meaning on FIS-based devices.
</para>
+ </sect2>
+
+ <sect2><title>Reset ATA bus</title>
<programlisting>
void (*phy_reset) (struct ata_port *ap);
</programlisting>
functions ata_bus_reset() or sata_phy_reset() for this hook.
</para>
+ </sect2>
+
+ <sect2><title>Control PCI IDE BMDMA engine</title>
<programlisting>
void (*bmdma_setup) (struct ata_queued_cmd *qc);
void (*bmdma_start) (struct ata_queued_cmd *qc);
+void (*bmdma_stop) (struct ata_port *ap);
+u8 (*bmdma_status) (struct ata_port *ap);
</programlisting>
<para>
- When setting up an IDE BMDMA transaction, these hooks arm
- (->bmdma_setup) and fire (->bmdma_start) the hardware's DMA
- engine.
+When setting up an IDE BMDMA transaction, these hooks arm
+(->bmdma_setup), fire (->bmdma_start), and halt (->bmdma_stop)
+the hardware's DMA engine. ->bmdma_status is used to read the standard
+PCI IDE DMA Status register.
</para>
+ <para>
+These hooks are typically either no-ops, or simply not implemented, in
+FIS-based drivers.
+ </para>
+
+ </sect2>
+
+ <sect2><title>High-level taskfile hooks</title>
<programlisting>
void (*qc_prep) (struct ata_queued_cmd *qc);
int (*qc_issue) (struct ata_queued_cmd *qc);
->qc_issue is used to make a command active, once the hardware
and S/G tables have been prepared. IDE BMDMA drivers use the
helper function ata_qc_issue_prot() for taskfile protocol-based
- dispatch. More advanced drivers roll their own ->qc_issue
- implementation, using this as the "issue new ATA command to
- hardware" hook.
+ dispatch. More advanced drivers implement their own ->qc_issue.
</para>
+ </sect2>
+
+ <sect2><title>Timeout (error) handling</title>
<programlisting>
void (*eng_timeout) (struct ata_port *ap);
</programlisting>
<para>
- This is a high level error handling function, called from the
- error handling thread, when a command times out.
+This is a high level error handling function, called from the
+error handling thread, when a command times out. Most newer
+hardware will implement its own error handling code here. IDE BMDMA
+drivers may use the helper function ata_eng_timeout().
</para>
+ </sect2>
+
+ <sect2><title>Hardware interrupt handling</title>
<programlisting>
irqreturn_t (*irq_handler)(int, void *, struct pt_regs *);
void (*irq_clear) (struct ata_port *);
is quiet.
</para>
+ </sect2>
+
+ <sect2><title>SATA phy read/write</title>
<programlisting>
u32 (*scr_read) (struct ata_port *ap, unsigned int sc_reg);
void (*scr_write) (struct ata_port *ap, unsigned int sc_reg,
if ->phy_reset hook called the sata_phy_reset() helper function.
</para>
+ </sect2>
+
+ <sect2><title>Init and shutdown</title>
<programlisting>
int (*port_start) (struct ata_port *ap);
void (*port_stop) (struct ata_port *ap);
tasks.
</para>
<para>
- ->host_stop() is called when the rmmod or hot unplug process
- begins. The hook must stop all hardware interrupts, DMA
- engines, etc.
- </para>
- <para>
->port_stop() is called after ->host_stop(). It's sole function
is to release DMA/memory resources, now that they are no longer
actively being used.
</para>
+ <para>
+ ->host_stop() is called after all ->port_stop() calls
+have completed. The hook must finalize hardware shutdown, release DMA
+and other resources, etc.
+ </para>
+
+ </sect2>
</sect1>
</chapter>
!Idrivers/scsi/sata_sil.c
</chapter>
+ <chapter id="libataThanks">
+ <title>Thanks</title>
+ <para>
+ The bulk of the ATA knowledge comes thanks to long conversations with
+ Andre Hedrick (www.linux-ide.org), and long hours pondering the ATA
+ and SCSI specifications.
+ </para>
+ <para>
+ Thanks to Alan Cox for pointing out similarities
+ between SATA and SCSI, and in general for motivation to hack on
+ libata.
+ </para>
+ <para>
+ libata's device detection
+ method, ata_pio_devchk, and in general all the early probing was
+ based on extensive study of Hale Landis's probe/reset code in his
+ ATADRVR driver (www.ata-atapi.com).
+ </para>
+ </chapter>
+
</book>
VERSION = 2
PATCHLEVEL = 6
SUBLEVEL = 12
-EXTRAVERSION =-rc5
+EXTRAVERSION =-rc6
NAME=Woozy Numbat
# *DOCUMENTATION*
{
struct epoll_event *events64 = NULL;
mm_segment_t old_fs = get_fs();
- int error, numevents, size;
+ int numevents, size;
int evt_idx;
int do_free_pages = 0;
return IRQ_HANDLED;
}
-#endif /* CONFIG_ACPI */
-
/*
* ia64_mca_cpe_poll
*
platform_send_ipi(first_cpu(cpu_online_map), IA64_CPEP_VECTOR, IA64_IPI_DM_INT, 0);
}
+#endif /* CONFIG_ACPI */
+
/*
* C portion of the OS INIT handler
*
*/
void default_idle(void)
{
- while(1) {
- if (need_resched())
- __asm__("stop #0x2000" : : : "cc");
- schedule();
+ local_irq_disable();
+ while (!need_resched()) {
+ /* This stop will re-enable interrupts */
+ __asm__("stop #0x2000" : : : "cc");
+ local_irq_disable();
}
+ local_irq_enable();
}
void (*idle)(void) = default_idle;
void cpu_idle(void)
{
/* endless idle loop with no priority at all */
- idle();
+ while (1) {
+ idle();
+ preempt_enable_no_resched();
+ schedule();
+ preempt_disable();
+ }
}
void machine_restart(char * __unused)
.icache_bsize = 32,
.dcache_bsize = 32,
},
+ { /* 405EP */
+ .pvr_mask = 0xffff0000,
+ .pvr_value = 0x51210000,
+ .cpu_name = "405EP",
+ .cpu_features = CPU_FTR_SPLIT_ID_CACHE |
+ CPU_FTR_USE_TB,
+ .cpu_user_features = PPC_FEATURE_32 |
+ PPC_FEATURE_HAS_MMU | PPC_FEATURE_HAS_4xxMAC,
+ .icache_bsize = 32,
+ .dcache_bsize = 32,
+ },
#endif /* CONFIG_40x */
#ifdef CONFIG_44x
_GLOBAL(flush_icache_range)
BEGIN_FTR_SECTION
blr /* for 601, do nothing */
-END_FTR_SECTION_IFSET(PPC_FEATURE_UNIFIED_CACHE)
+END_FTR_SECTION_IFCLR(CPU_FTR_SPLIT_ID_CACHE)
li r5,L1_CACHE_LINE_SIZE-1
andc r3,r3,r5
subf r4,r3,r4
_GLOBAL(__flush_dcache_icache)
BEGIN_FTR_SECTION
blr /* for 601, do nothing */
-END_FTR_SECTION_IFSET(PPC_FEATURE_UNIFIED_CACHE)
+END_FTR_SECTION_IFCLR(CPU_FTR_SPLIT_ID_CACHE)
rlwinm r3,r3,0,0,19 /* Get page base address */
li r4,4096/L1_CACHE_LINE_SIZE /* Number of lines in a page */
mtctr r4
_GLOBAL(__flush_dcache_icache_phys)
BEGIN_FTR_SECTION
blr /* for 601, do nothing */
-END_FTR_SECTION_IFSET(PPC_FEATURE_UNIFIED_CACHE)
+END_FTR_SECTION_IFCLR(CPU_FTR_SPLIT_ID_CACHE)
mfmsr r10
rlwinm r0,r10,0,28,26 /* clear DR */
mtmsr r0
REST_8GPRS(14, r1)
REST_10GPRS(22, r1)
-#ifdef CONFIG_PPC_ISERIES
- clrrdi r7,r1,THREAD_SHIFT /* get current_thread_info() */
- ld r7,TI_FLAGS(r7) /* Get run light flag */
- mfspr r9,CTRLF
- srdi r7,r7,TIF_RUN_LIGHT
- insrdi r9,r7,1,63 /* Insert run light into CTRL */
- mtspr CTRLT,r9
-#endif
-
/* convert old thread to its task_struct for return value */
addi r3,r3,-THREAD
ld r7,_NIP(r1) /* Return to _switch caller in new task */
lhz r24,PACAPACAINDEX(r13) /* Get processor # */
cmpwi 0,r24,0 /* Are we processor 0? */
beq .__start_initialization_iSeries /* Start up the first processor */
- mfspr r4,CTRLF
- li r5,RUNLATCH /* Turn off the run light */
+ mfspr r4,SPRN_CTRLF
+ li r5,CTRL_RUNLATCH /* Turn off the run light */
andc r4,r4,r5
- mtspr CTRLT,r4
+ mtspr SPRN_CTRLT,r4
1:
HMT_LOW
mfspr r4, HID0
ori r4, r4, 0x1
mtspr HID0, r4
- mfspr r4, CTRLF
+ mfspr r4, SPRN_CTRLF
oris r4, r4, 0x40
- mtspr CTRLT, r4
+ mtspr SPRN_CTRLT, r4
blr
#endif
late_initcall(iSeries_src_init);
+static int set_spread_lpevents(char *str)
+{
+ unsigned long i;
+ unsigned long val = simple_strtoul(str, NULL, 0);
+
+ /*
+ * The parameter is the number of processors to share in processing
+ * lp events.
+ */
+ if (( val > 0) && (val <= NR_CPUS)) {
+ for (i = 1; i < val; ++i)
+ paca[i].lpqueue_ptr = paca[0].lpqueue_ptr;
+
+ printk("lpevent processing spread over %ld processors\n", val);
+ } else {
+ printk("invalid spread_lpevents %ld\n", val);
+ }
+
+ return 1;
+}
+__setup("spread_lpevents=", set_spread_lpevents);
+
void __init iSeries_early_setup(void)
{
iSeries_fixup_klimit();
{
struct paca_struct *lpaca;
long oldval;
- unsigned long CTRL;
/* ensure iSeries run light will be out when idle */
- clear_thread_flag(TIF_RUN_LIGHT);
- CTRL = mfspr(CTRLF);
- CTRL &= ~RUNLATCH;
- mtspr(CTRLT, CTRL);
+ ppc64_runlatch_off();
lpaca = get_paca();
}
}
+ ppc64_runlatch_on();
schedule();
+ ppc64_runlatch_off();
}
return 0;
childregs->gpr[1] = sp + sizeof(struct pt_regs);
p->thread.regs = NULL; /* no user register state */
clear_ti_thread_flag(p->thread_info, TIF_32BIT);
-#ifdef CONFIG_PPC_ISERIES
- set_ti_thread_flag(p->thread_info, TIF_RUN_LIGHT);
-#endif
} else {
childregs->gpr[1] = usp;
p->thread.regs = childregs;
*/
#define ADDR(x) (u32) ((unsigned long)(x) - offset)
+/*
+ * Error results ... some OF calls will return "-1" on error, some
+ * will return 0, some will return either. To simplify, here are
+ * macros to use with any ihandle or phandle return value to check if
+ * it is valid
+ */
+
+#define PROM_ERROR (-1u)
+#define PHANDLE_VALID(p) ((p) != 0 && (p) != PROM_ERROR)
+#define IHANDLE_VALID(i) ((i) != 0 && (i) != PROM_ERROR)
+
+
/* This is the one and *ONLY* place where we actually call open
* firmware from, since we need to make sure we're running in 32b
* mode when we do. We switch back to 64b mode upon return.
*/
-#define PROM_ERROR (-1)
-
static int __init call_prom(const char *service, int nargs, int nret, ...)
{
int i;
{
unsigned long offset = reloc_offset();
ihandle elfloader;
- int ret;
elfloader = call_prom("open", 1, 1, ADDR("/packages/elf-loader"));
if (elfloader == 0) {
prom_printf("couldn't open /packages/elf-loader\n");
return;
}
- ret = call_prom("call-method", 3, 1, ADDR("process-elf-header"),
+ call_prom("call-method", 3, 1, ADDR("process-elf-header"),
elfloader, ADDR(&fake_elf));
call_prom("close", 1, 0, elfloader);
}
base = _ALIGN_UP(base + 0x100000, align)) {
prom_debug(" trying: 0x%x\n\r", base);
addr = (unsigned long)prom_claim(base, size, 0);
- if ((int)addr != PROM_ERROR)
+ if (addr != PROM_ERROR)
break;
addr = 0;
if (align == 0)
for(; base > RELOC(alloc_bottom); base = _ALIGN_DOWN(base - 0x100000, align)) {
prom_debug(" trying: 0x%x\n\r", base);
addr = (unsigned long)prom_claim(base, size, 0);
- if ((int)addr != PROM_ERROR)
+ if (addr != PROM_ERROR)
break;
addr = 0;
}
{
unsigned long offset = reloc_offset();
struct prom_t *_prom = PTRRELOC(&prom);
- phandle prom_rtas, rtas_node;
+ phandle rtas_node;
+ ihandle rtas_inst;
u32 base, entry = 0;
u32 size = 0;
prom_debug("prom_instantiate_rtas: start...\n");
- prom_rtas = call_prom("finddevice", 1, 1, ADDR("/rtas"));
- prom_debug("prom_rtas: %x\n", prom_rtas);
- if (prom_rtas == (phandle) -1)
+ rtas_node = call_prom("finddevice", 1, 1, ADDR("/rtas"));
+ prom_debug("rtas_node: %x\n", rtas_node);
+ if (!PHANDLE_VALID(rtas_node))
return;
- prom_getprop(prom_rtas, "rtas-size", &size, sizeof(size));
+ prom_getprop(rtas_node, "rtas-size", &size, sizeof(size));
if (size == 0)
return;
prom_printf("RTAS allocation failed !\n");
return;
}
- prom_printf("instantiating rtas at 0x%x", base);
- rtas_node = call_prom("open", 1, 1, ADDR("/rtas"));
- prom_printf("...");
+ rtas_inst = call_prom("open", 1, 1, ADDR("/rtas"));
+ if (!IHANDLE_VALID(rtas_inst)) {
+ prom_printf("opening rtas package failed");
+ return;
+ }
+
+ prom_printf("instantiating rtas at 0x%x ...", base);
if (call_prom("call-method", 3, 2,
ADDR("instantiate-rtas"),
- rtas_node, base) != PROM_ERROR) {
+ rtas_inst, base) != PROM_ERROR) {
entry = (long)_prom->args.rets[1];
}
if (entry == 0) {
reserve_mem(base, size);
- prom_setprop(prom_rtas, "linux,rtas-base", &base, sizeof(base));
- prom_setprop(prom_rtas, "linux,rtas-entry", &entry, sizeof(entry));
+ prom_setprop(rtas_node, "linux,rtas-base", &base, sizeof(base));
+ prom_setprop(rtas_node, "linux,rtas-entry", &entry, sizeof(entry));
prom_debug("rtas base = 0x%x\n", base);
prom_debug("rtas entry = 0x%x\n", entry);
prom_printf("opening PHB %s", path);
phb_node = call_prom("open", 1, 1, path);
- if ( (long)phb_node <= 0)
+ if (phb_node == 0)
prom_printf("... failed\n");
else
prom_printf("... done\n");
/* get a handle for the stdout device */
_prom->chosen = call_prom("finddevice", 1, 1, ADDR("/chosen"));
- if ((long)_prom->chosen <= 0)
+ if (!PHANDLE_VALID(_prom->chosen))
prom_panic("cannot find chosen"); /* msg won't be printed :( */
/* get device tree root */
_prom->root = call_prom("finddevice", 1, 1, ADDR("/"));
- if ((long)_prom->root <= 0)
+ if (!PHANDLE_VALID(_prom->root))
prom_panic("cannot find device tree root"); /* msg won't be printed :( */
}
}
/* Default to pSeries. We need to know if we are running LPAR */
rtas = call_prom("finddevice", 1, 1, ADDR("/rtas"));
- if (rtas != (phandle) -1) {
- unsigned long x;
- x = prom_getproplen(rtas, "ibm,hypertas-functions");
+ if (PHANDLE_VALID(rtas)) {
+ int x = prom_getproplen(rtas, "ibm,hypertas-functions");
if (x != PROM_ERROR) {
prom_printf("Hypertas detected, assuming LPAR !\n");
return PLATFORM_PSERIES_LPAR;
* leave some room at the end of the path for appending extra
* arguments
*/
- if (call_prom("package-to-path", 3, 1, node, path, PROM_SCRATCH_SIZE-10) < 0)
+ if (call_prom("package-to-path", 3, 1, node, path,
+ PROM_SCRATCH_SIZE-10) == PROM_ERROR)
continue;
prom_printf("found display : %s, opening ... ", path);
ih = call_prom("open", 1, 1, path);
- if (ih == (ihandle)0 || ih == (ihandle)-1) {
+ if (ih == 0) {
prom_printf("failed\n");
continue;
}
return 0;
}
+/*
+ * The Open Firmware 1275 specification states properties must be 31 bytes or
+ * less, however not all firmwares obey this. Make it 64 bytes to be safe.
+ */
+#define MAX_PROPERTY_NAME 64
+
static void __init scan_dt_build_strings(phandle node, unsigned long *mem_start,
unsigned long *mem_end)
{
/* get and store all property names */
prev_name = RELOC("");
for (;;) {
-
- /* 32 is max len of name including nul. */
- namep = make_room(mem_start, mem_end, 32, 1);
- if (call_prom("nextprop", 3, 1, node, prev_name, namep) <= 0) {
+ int rc;
+
+ /* 64 is max len of name including nul. */
+ namep = make_room(mem_start, mem_end, MAX_PROPERTY_NAME, 1);
+ rc = call_prom("nextprop", 3, 1, node, prev_name, namep);
+ if (rc != 1) {
/* No more nodes: unwind alloc */
*mem_start = (unsigned long)namep;
break;
}
}
-/*
- * The Open Firmware 1275 specification states properties must be 31 bytes or
- * less, however not all firmwares obey this. Make it 64 bytes to be safe.
- */
-#define MAX_PROPERTY_NAME 64
-
static void __init scan_dt_build_struct(phandle node, unsigned long *mem_start,
unsigned long *mem_end)
{
prev_name = RELOC("");
sstart = (char *)RELOC(dt_string_start);
for (;;) {
- if (call_prom("nextprop", 3, 1, node, prev_name, pname) <= 0)
+ int rc;
+
+ rc = call_prom("nextprop", 3, 1, node, prev_name, pname);
+ if (rc != 1)
break;
/* find string offset */
l = call_prom("getproplen", 2, 1, node, pname);
/* sanity checks */
- if (l < 0)
+ if (l == PROM_ERROR)
continue;
if (l > MAX_PROPERTY_LENGTH) {
prom_printf("WARNING: ignoring large property ");
/* Some G5s have a missing interrupt definition, fix it up here */
u3 = call_prom("finddevice", 1, 1, ADDR("/u3@0,f8000000"));
- if ((long)u3 <= 0)
+ if (!PHANDLE_VALID(u3))
return;
i2c = call_prom("finddevice", 1, 1, ADDR("/u3@0,f8000000/i2c@f8001000"));
- if ((long)i2c <= 0)
+ if (!PHANDLE_VALID(i2c))
return;
mpic = call_prom("finddevice", 1, 1, ADDR("/u3@0,f8000000/mpic@f8040000"));
- if ((long)mpic <= 0)
+ if (!PHANDLE_VALID(mpic))
return;
/* check if proper rev of u3 */
- if (prom_getprop(u3, "device-rev", &u3_rev, sizeof(u3_rev)) <= 0)
+ if (prom_getprop(u3, "device-rev", &u3_rev, sizeof(u3_rev))
+ == PROM_ERROR)
return;
if (u3_rev != 0x35)
return;
extern void smp_release_cpus(void);
-unsigned long decr_overclock = 1;
-unsigned long decr_overclock_proc0 = 1;
-unsigned long decr_overclock_set = 0;
-unsigned long decr_overclock_proc0_set = 0;
-
int have_of = 1;
int boot_cpuid = 0;
int boot_cpuid_phys = 0;
printk("[dump]%04x %s\n", src, msg);
}
-int set_spread_lpevents( char * str )
-{
- /* The parameter is the number of processors to share in processing lp events */
- unsigned long i;
- unsigned long val = simple_strtoul( str, NULL, 0 );
- if ( ( val > 0 ) && ( val <= NR_CPUS ) ) {
- for ( i=1; i<val; ++i )
- paca[i].lpqueue_ptr = paca[0].lpqueue_ptr;
- printk("lpevent processing spread over %ld processors\n", val);
- }
- else
- printk("invalid spreaqd_lpevents %ld\n", val);
- return 1;
-}
-
/* This should only be called on processor 0 during calibrate decr */
void setup_default_decr(void)
{
struct paca_struct *lpaca = get_paca();
- if ( decr_overclock_set && !decr_overclock_proc0_set )
- decr_overclock_proc0 = decr_overclock;
-
- lpaca->default_decr = tb_ticks_per_jiffy / decr_overclock_proc0;
+ lpaca->default_decr = tb_ticks_per_jiffy;
lpaca->next_jiffy_update_tb = get_tb() + tb_ticks_per_jiffy;
}
-int set_decr_overclock_proc0( char * str )
-{
- unsigned long val = simple_strtoul( str, NULL, 0 );
- if ( ( val >= 1 ) && ( val <= 48 ) ) {
- decr_overclock_proc0_set = 1;
- decr_overclock_proc0 = val;
- printk("proc 0 decrementer overclock factor of %ld\n", val);
- }
- else
- printk("invalid proc 0 decrementer overclock factor of %ld\n", val);
- return 1;
-}
-
-int set_decr_overclock( char * str )
-{
- unsigned long val = simple_strtoul( str, NULL, 0 );
- if ( ( val >= 1 ) && ( val <= 48 ) ) {
- decr_overclock_set = 1;
- decr_overclock = val;
- printk("decrementer overclock factor of %ld\n", val);
- }
- else
- printk("invalid decrementer overclock factor of %ld\n", val);
- return 1;
-
-}
-
-__setup("spread_lpevents=", set_spread_lpevents );
-__setup("decr_overclock_proc0=", set_decr_overclock_proc0 );
-__setup("decr_overclock=", set_decr_overclock );
-
#ifndef CONFIG_PPC_ISERIES
/*
* This function can be used by platforms to "find" legacy serial ports.
}
}
-extern unsigned long decr_overclock;
extern struct gettimeofday_struct do_gtod;
struct thread_info *current_set[NR_CPUS];
if (smp_ops->cpu_bootable && !smp_ops->cpu_bootable(cpu))
return -EINVAL;
- paca[cpu].default_decr = tb_ticks_per_jiffy / decr_overclock;
+ paca[cpu].default_decr = tb_ticks_per_jiffy;
if (!cpu_has_feature(CPU_FTR_SLB)) {
void *tmp;
#ifdef CONFIG_PPC_PSERIES
unsigned long set, reset;
int ret;
- unsigned int ctrl;
#endif /* CONFIG_PPC_PSERIES */
/* Only need to enable them once */
* On SMT machines we have to set the run latch in the ctrl register
* in order to make PMC6 spin.
*/
- if (cpu_has_feature(CPU_FTR_SMT)) {
- ctrl = mfspr(CTRLF);
- ctrl |= RUNLATCH;
- mtspr(CTRLT, ctrl);
- }
+ if (cpu_has_feature(CPU_FTR_SMT))
+ ppc64_runlatch_on();
#endif /* CONFIG_PPC_PSERIES */
}
//#include <linux/kernel_stat.h>
#include <linux/notifier.h>
#include <linux/cpu.h>
+#include <linux/workqueue.h>
#include "appldata.h"
static int appldata_timer_active;
/*
- * Tasklet
+ * Work queue
*/
-static struct tasklet_struct appldata_tasklet_struct;
+static struct workqueue_struct *appldata_wq;
+static void appldata_work_fn(void *data);
+static DECLARE_WORK(appldata_work, appldata_work_fn, NULL);
+
/*
* Ops list
static LIST_HEAD(appldata_ops_list);
-/************************* timer, tasklet, DIAG ******************************/
+/*************************** timer, work, DIAG *******************************/
/*
* appldata_timer_function()
*
- * schedule tasklet and reschedule timer
+ * schedule work and reschedule timer
*/
static void appldata_timer_function(unsigned long data, struct pt_regs *regs)
{
atomic_read(&appldata_expire_count));
if (atomic_dec_and_test(&appldata_expire_count)) {
atomic_set(&appldata_expire_count, num_online_cpus());
- tasklet_schedule((struct tasklet_struct *) data);
+ queue_work(appldata_wq, (struct work_struct *) data);
}
}
/*
- * appldata_tasklet_function()
+ * appldata_work_fn()
*
* call data gathering function for each (active) module
*/
-static void appldata_tasklet_function(unsigned long data)
+static void appldata_work_fn(void *data)
{
struct list_head *lh;
struct appldata_ops *ops;
int i;
- P_DEBUG(" -= Tasklet =-\n");
+ P_DEBUG(" -= Work Queue =-\n");
i = 0;
spin_lock(&appldata_ops_lock);
list_for_each(lh, &appldata_ops_list) {
: "=d" (ry) : "d" (&(appldata_parameter_list)) : "cc");
return (int) ry;
}
-/********************** timer, tasklet, DIAG <END> ***************************/
+/************************ timer, work, DIAG <END> ****************************/
/****************************** /proc stuff **********************************/
struct list_head *lh;
found = 0;
- spin_lock_bh(&appldata_ops_lock);
+ spin_lock(&appldata_ops_lock);
list_for_each(lh, &appldata_ops_list) {
tmp_ops = list_entry(lh, struct appldata_ops, list);
if (&tmp_ops->ctl_table[2] == ctl) {
}
}
if (!found) {
- spin_unlock_bh(&appldata_ops_lock);
+ spin_unlock(&appldata_ops_lock);
return -ENODEV;
}
ops = ctl->data;
if (!try_module_get(ops->owner)) { // protect this function
- spin_unlock_bh(&appldata_ops_lock);
+ spin_unlock(&appldata_ops_lock);
return -ENODEV;
}
- spin_unlock_bh(&appldata_ops_lock);
+ spin_unlock(&appldata_ops_lock);
if (!*lenp || *ppos) {
*lenp = 0;
return -EFAULT;
}
- spin_lock_bh(&appldata_ops_lock);
+ spin_lock(&appldata_ops_lock);
if ((buf[0] == '1') && (ops->active == 0)) {
- if (!try_module_get(ops->owner)) { // protect tasklet
- spin_unlock_bh(&appldata_ops_lock);
+ // protect work queue callback
+ if (!try_module_get(ops->owner)) {
+ spin_unlock(&appldata_ops_lock);
module_put(ops->owner);
return -ENODEV;
}
}
module_put(ops->owner);
}
- spin_unlock_bh(&appldata_ops_lock);
+ spin_unlock(&appldata_ops_lock);
out:
*lenp = len;
*ppos += len;
}
memset(ops->ctl_table, 0, 4*sizeof(struct ctl_table));
- spin_lock_bh(&appldata_ops_lock);
+ spin_lock(&appldata_ops_lock);
list_for_each(lh, &appldata_ops_list) {
tmp_ops = list_entry(lh, struct appldata_ops, list);
P_DEBUG("register_ops loop: %i) name = %s, ctl = %i\n",
APPLDATA_PROC_NAME_LENGTH) == 0) {
P_ERROR("Name \"%s\" already registered!\n", ops->name);
kfree(ops->ctl_table);
- spin_unlock_bh(&appldata_ops_lock);
+ spin_unlock(&appldata_ops_lock);
return -EBUSY;
}
if (tmp_ops->ctl_nr == ops->ctl_nr) {
P_ERROR("ctl_nr %i already registered!\n", ops->ctl_nr);
kfree(ops->ctl_table);
- spin_unlock_bh(&appldata_ops_lock);
+ spin_unlock(&appldata_ops_lock);
return -EBUSY;
}
}
list_add(&ops->list, &appldata_ops_list);
- spin_unlock_bh(&appldata_ops_lock);
+ spin_unlock(&appldata_ops_lock);
ops->ctl_table[0].ctl_name = CTL_APPLDATA;
ops->ctl_table[0].procname = appldata_proc_name;
*/
void appldata_unregister_ops(struct appldata_ops *ops)
{
- spin_lock_bh(&appldata_ops_lock);
+ spin_lock(&appldata_ops_lock);
unregister_sysctl_table(ops->sysctl_header);
list_del(&ops->list);
kfree(ops->ctl_table);
ops->ctl_table = NULL;
- spin_unlock_bh(&appldata_ops_lock);
+ spin_unlock(&appldata_ops_lock);
P_INFO("%s-ops unregistered!\n", ops->name);
}
/********************** module-ops management <END> **************************/
init_virt_timer(&per_cpu(appldata_timer, cpu));
per_cpu(appldata_timer, cpu).function = appldata_timer_function;
per_cpu(appldata_timer, cpu).data = (unsigned long)
- &appldata_tasklet_struct;
+ &appldata_work;
atomic_inc(&appldata_expire_count);
spin_lock(&appldata_timer_lock);
__appldata_vtimer_setup(APPLDATA_MOD_TIMER);
del_virt_timer(&per_cpu(appldata_timer, cpu));
if (atomic_dec_and_test(&appldata_expire_count)) {
atomic_set(&appldata_expire_count, num_online_cpus());
- tasklet_schedule(&appldata_tasklet_struct);
+ queue_work(appldata_wq, &appldata_work);
}
spin_lock(&appldata_timer_lock);
__appldata_vtimer_setup(APPLDATA_MOD_TIMER);
/*
* appldata_init()
*
- * init timer and tasklet, register /proc entries
+ * init timer, register /proc entries
*/
static int __init appldata_init(void)
{
P_DEBUG("sizeof(parameter_list) = %lu\n",
sizeof(struct appldata_parameter_list));
+ appldata_wq = create_singlethread_workqueue("appldata");
+ if (!appldata_wq) {
+ P_ERROR("Could not create work queue\n");
+ return -ENOMEM;
+ }
+
for_each_online_cpu(i)
appldata_online_cpu(i);
appldata_table[1].de->owner = THIS_MODULE;
#endif
- tasklet_init(&appldata_tasklet_struct, appldata_tasklet_function, 0);
P_DEBUG("Base interface initialized.\n");
return 0;
}
/*
* appldata_exit()
*
- * stop timer and tasklet, unregister /proc entries
+ * stop timer, unregister /proc entries
*/
static void __exit appldata_exit(void)
{
/*
* ops list should be empty, but just in case something went wrong...
*/
- spin_lock_bh(&appldata_ops_lock);
+ spin_lock(&appldata_ops_lock);
list_for_each(lh, &appldata_ops_list) {
ops = list_entry(lh, struct appldata_ops, list);
rc = appldata_diag(ops->record_nr, APPLDATA_STOP_REC,
"return code: %d\n", ops->name, rc);
}
}
- spin_unlock_bh(&appldata_ops_lock);
+ spin_unlock(&appldata_ops_lock);
for_each_online_cpu(i)
appldata_offline_cpu(i);
unregister_sysctl_table(appldata_sysctl_header);
- tasklet_kill(&appldata_tasklet_struct);
+ destroy_workqueue(appldata_wq);
P_DEBUG("... module unloaded!\n");
}
/**************************** init / exit <END> ******************************/
u64 pgmajfault; /* page faults (major only) */
// <-- New in 2.6
-} appldata_mem_data;
+} __attribute__((packed)) appldata_mem_data;
static inline void appldata_debug_print(struct appldata_mem_data *mem_data)
u64 rx_dropped; /* no space in linux buffers */
u64 tx_dropped; /* no space available in linux */
u64 collisions; /* collisions while transmitting */
-} appldata_net_sum_data;
+} __attribute__((packed)) appldata_net_sum_data;
static inline void appldata_print_debug(struct appldata_net_sum_data *net_data)
u32 per_cpu_softirq; /* ... spent in softirqs */
u32 per_cpu_iowait; /* ... spent while waiting for I/O */
// <-- New in 2.6
-};
+} __attribute__((packed));
struct appldata_os_data {
u64 timestamp;
/* per cpu data */
struct appldata_os_per_cpu os_cpu[0];
-};
+} __attribute__((packed));
static struct appldata_os_data *appldata_os_data;
#include <asm/pgalloc.h>
#include <asm/system.h>
#include <asm/uaccess.h>
+#include <asm/unistd.h>
#ifdef CONFIG_S390_SUPPORT
#include "compat_ptrace.h"
peek_user(struct task_struct *child, addr_t addr, addr_t data)
{
struct user *dummy = NULL;
- addr_t offset, tmp;
+ addr_t offset, tmp, mask;
/*
* Stupid gdb peeks/pokes the access registers in 64 bit with
* an alignment of 4. Programmers from hell...
*/
- if ((addr & 3) || addr > sizeof(struct user) - __ADDR_MASK)
+ mask = __ADDR_MASK;
+#ifdef CONFIG_ARCH_S390X
+ if (addr >= (addr_t) &dummy->regs.acrs &&
+ addr < (addr_t) &dummy->regs.orig_gpr2)
+ mask = 3;
+#endif
+ if ((addr & mask) || addr > sizeof(struct user) - __ADDR_MASK)
return -EIO;
if (addr < (addr_t) &dummy->regs.acrs) {
* access registers are stored in the thread structure
*/
offset = addr - (addr_t) &dummy->regs.acrs;
+#ifdef CONFIG_ARCH_S390X
+ /*
+ * Very special case: old & broken 64 bit gdb reading
+ * from acrs[15]. Result is a 64 bit value. Read the
+ * 32 bit acrs[15] value and shift it by 32. Sick...
+ */
+ if (addr == (addr_t) &dummy->regs.acrs[15])
+ tmp = ((unsigned long) child->thread.acrs[15]) << 32;
+ else
+#endif
tmp = *(addr_t *)((addr_t) &child->thread.acrs + offset);
} else if (addr == (addr_t) &dummy->regs.orig_gpr2) {
*/
offset = addr - (addr_t) &dummy->regs.fp_regs;
tmp = *(addr_t *)((addr_t) &child->thread.fp_regs + offset);
+ if (addr == (addr_t) &dummy->regs.fp_regs.fpc)
+ tmp &= (unsigned long) FPC_VALID_MASK
+ << (BITS_PER_LONG - 32);
} else if (addr < (addr_t) (&dummy->regs.per_info + 1)) {
/*
poke_user(struct task_struct *child, addr_t addr, addr_t data)
{
struct user *dummy = NULL;
- addr_t offset;
+ addr_t offset, mask;
/*
* Stupid gdb peeks/pokes the access registers in 64 bit with
* an alignment of 4. Programmers from hell indeed...
*/
- if ((addr & 3) || addr > sizeof(struct user) - __ADDR_MASK)
+ mask = __ADDR_MASK;
+#ifdef CONFIG_ARCH_S390X
+ if (addr >= (addr_t) &dummy->regs.acrs &&
+ addr < (addr_t) &dummy->regs.orig_gpr2)
+ mask = 3;
+#endif
+ if ((addr & mask) || addr > sizeof(struct user) - __ADDR_MASK)
return -EIO;
if (addr < (addr_t) &dummy->regs.acrs) {
* access registers are stored in the thread structure
*/
offset = addr - (addr_t) &dummy->regs.acrs;
+#ifdef CONFIG_ARCH_S390X
+ /*
+ * Very special case: old & broken 64 bit gdb writing
+ * to acrs[15] with a 64 bit value. Ignore the lower
+ * half of the value and write the upper 32 bit to
+ * acrs[15]. Sick...
+ */
+ if (addr == (addr_t) &dummy->regs.acrs[15])
+ child->thread.acrs[15] = (unsigned int) (data >> 32);
+ else
+#endif
*(addr_t *)((addr_t) &child->thread.acrs + offset) = data;
} else if (addr == (addr_t) &dummy->regs.orig_gpr2) {
* floating point regs. are stored in the thread structure
*/
if (addr == (addr_t) &dummy->regs.fp_regs.fpc &&
- (data & ~FPC_VALID_MASK) != 0)
+ (data & ~((unsigned long) FPC_VALID_MASK
+ << (BITS_PER_LONG - 32))) != 0)
return -EINVAL;
offset = addr - (addr_t) &dummy->regs.fp_regs;
*(addr_t *)((addr_t) &child->thread.fp_regs + offset) = data;
ptrace_notify(SIGTRAP | ((current->ptrace & PT_TRACESYSGOOD)
? 0x80 : 0));
+ /*
+ * If the debuffer has set an invalid system call number,
+ * we prepare to skip the system call restart handling.
+ */
+ if (!entryexit && regs->gprs[2] >= NR_syscalls)
+ regs->trap = -1;
+
/*
* this isn't the same as continuing with a signal, but it will do
* for normal use. strace only continues with a signal if the
* we are not in an interrupt and that there is a
* user context.
*/
- if (user_address == 0 || in_interrupt() || !mm)
+ if (user_address == 0 || in_atomic() || !mm)
goto no_context;
/*
return NULL;
}
+static int iommu_alloc_ctx(struct pci_iommu *iommu)
+{
+ int lowest = iommu->ctx_lowest_free;
+ int sz = IOMMU_NUM_CTXS - lowest;
+ int n = find_next_zero_bit(iommu->ctx_bitmap, sz, lowest);
+
+ if (unlikely(n == sz)) {
+ n = find_next_zero_bit(iommu->ctx_bitmap, lowest, 1);
+ if (unlikely(n == lowest)) {
+ printk(KERN_WARNING "IOMMU: Ran out of contexts.\n");
+ n = 0;
+ }
+ }
+ if (n)
+ __set_bit(n, iommu->ctx_bitmap);
+
+ return n;
+}
+
+static inline void iommu_free_ctx(struct pci_iommu *iommu, int ctx)
+{
+ if (likely(ctx)) {
+ __clear_bit(ctx, iommu->ctx_bitmap);
+ if (ctx < iommu->ctx_lowest_free)
+ iommu->ctx_lowest_free = ctx;
+ }
+}
+
/* Allocate and map kernel buffer of size SIZE using consistent mode
* DMA for PCI device PDEV. Return non-NULL cpu-side address if
* successful and set *DMA_ADDRP to the PCI side dma address.
npages = size >> IO_PAGE_SHIFT;
ctx = 0;
if (iommu->iommu_ctxflush)
- ctx = iommu->iommu_cur_ctx++;
+ ctx = iommu_alloc_ctx(iommu);
first_page = __pa(first_page);
while (npages--) {
iopte_val(*iopte) = (IOPTE_CONSISTENT(ctx) |
}
}
+ iommu_free_ctx(iommu, ctx);
+
spin_unlock_irqrestore(&iommu->lock, flags);
order = get_order(size);
base_paddr = __pa(oaddr & IO_PAGE_MASK);
ctx = 0;
if (iommu->iommu_ctxflush)
- ctx = iommu->iommu_cur_ctx++;
+ ctx = iommu_alloc_ctx(iommu);
if (strbuf->strbuf_enabled)
iopte_protection = IOPTE_STREAMING(ctx);
else
return PCI_DMA_ERROR_CODE;
}
-static void pci_strbuf_flush(struct pci_strbuf *strbuf, struct pci_iommu *iommu, u32 vaddr, unsigned long ctx, unsigned long npages)
+static void pci_strbuf_flush(struct pci_strbuf *strbuf, struct pci_iommu *iommu, u32 vaddr, unsigned long ctx, unsigned long npages, int direction)
{
int limit;
- PCI_STC_FLUSHFLAG_INIT(strbuf);
if (strbuf->strbuf_ctxflush &&
iommu->iommu_ctxflush) {
unsigned long matchreg, flushreg;
+ u64 val;
flushreg = strbuf->strbuf_ctxflush;
matchreg = PCI_STC_CTXMATCH_ADDR(strbuf, ctx);
- limit = 100000;
pci_iommu_write(flushreg, ctx);
- for(;;) {
- if (((long)pci_iommu_read(matchreg)) >= 0L)
- break;
- limit--;
- if (!limit)
- break;
- udelay(1);
+ val = pci_iommu_read(matchreg);
+ val &= 0xffff;
+ if (!val)
+ goto do_flush_sync;
+
+ while (val) {
+ if (val & 0x1)
+ pci_iommu_write(flushreg, ctx);
+ val >>= 1;
}
- if (!limit)
+ val = pci_iommu_read(matchreg);
+ if (unlikely(val)) {
printk(KERN_WARNING "pci_strbuf_flush: ctx flush "
- "timeout vaddr[%08x] ctx[%lx]\n",
- vaddr, ctx);
+ "timeout matchreg[%lx] ctx[%lx]\n",
+ val, ctx);
+ goto do_page_flush;
+ }
} else {
unsigned long i;
+ do_page_flush:
for (i = 0; i < npages; i++, vaddr += IO_PAGE_SIZE)
pci_iommu_write(strbuf->strbuf_pflush, vaddr);
}
+do_flush_sync:
+ /* If the device could not have possibly put dirty data into
+ * the streaming cache, no flush-flag synchronization needs
+ * to be performed.
+ */
+ if (direction == PCI_DMA_TODEVICE)
+ return;
+
+ PCI_STC_FLUSHFLAG_INIT(strbuf);
pci_iommu_write(strbuf->strbuf_fsync, strbuf->strbuf_flushflag_pa);
(void) pci_iommu_read(iommu->write_complete_reg);
/* Step 1: Kick data out of streaming buffers if necessary. */
if (strbuf->strbuf_enabled)
- pci_strbuf_flush(strbuf, iommu, bus_addr, ctx, npages);
+ pci_strbuf_flush(strbuf, iommu, bus_addr, ctx, npages, direction);
/* Step 2: Clear out first TSB entry. */
iopte_make_dummy(iommu, base);
free_streaming_cluster(iommu, bus_addr - iommu->page_table_map_base,
npages, ctx);
+ iommu_free_ctx(iommu, ctx);
+
spin_unlock_irqrestore(&iommu->lock, flags);
}
/* Step 4: Choose a context if necessary. */
ctx = 0;
if (iommu->iommu_ctxflush)
- ctx = iommu->iommu_cur_ctx++;
+ ctx = iommu_alloc_ctx(iommu);
/* Step 5: Create the mappings. */
if (strbuf->strbuf_enabled)
/* Step 1: Kick data out of streaming buffers if necessary. */
if (strbuf->strbuf_enabled)
- pci_strbuf_flush(strbuf, iommu, bus_addr, ctx, npages);
+ pci_strbuf_flush(strbuf, iommu, bus_addr, ctx, npages, direction);
/* Step 2: Clear out first TSB entry. */
iopte_make_dummy(iommu, base);
free_streaming_cluster(iommu, bus_addr - iommu->page_table_map_base,
npages, ctx);
+ iommu_free_ctx(iommu, ctx);
+
spin_unlock_irqrestore(&iommu->lock, flags);
}
}
/* Step 2: Kick data out of streaming buffers. */
- pci_strbuf_flush(strbuf, iommu, bus_addr, ctx, npages);
+ pci_strbuf_flush(strbuf, iommu, bus_addr, ctx, npages, direction);
spin_unlock_irqrestore(&iommu->lock, flags);
}
i--;
npages = (IO_PAGE_ALIGN(sglist[i].dma_address + sglist[i].dma_length)
- bus_addr) >> IO_PAGE_SHIFT;
- pci_strbuf_flush(strbuf, iommu, bus_addr, ctx, npages);
+ pci_strbuf_flush(strbuf, iommu, bus_addr, ctx, npages, direction);
spin_unlock_irqrestore(&iommu->lock, flags);
}
/* Setup initial software IOMMU state. */
spin_lock_init(&iommu->lock);
- iommu->iommu_cur_ctx = 0;
+ iommu->ctx_lowest_free = 1;
/* Register addresses. */
iommu->iommu_control = p->pbm_A.controller_regs + PSYCHO_IOMMU_CONTROL;
/* Setup initial software IOMMU state. */
spin_lock_init(&iommu->lock);
- iommu->iommu_cur_ctx = 0;
+ iommu->ctx_lowest_free = 1;
/* Register addresses. */
iommu->iommu_control = p->pbm_A.controller_regs + SABRE_IOMMU_CONTROL;
/* Setup initial software IOMMU state. */
spin_lock_init(&iommu->lock);
- iommu->iommu_cur_ctx = 0;
+ iommu->ctx_lowest_free = 1;
/* Register addresses, SCHIZO has iommu ctx flushing. */
iommu->iommu_control = pbm->pbm_regs + SCHIZO_IOMMU_CONTROL;
#define STRBUF_TAG_VALID 0x02UL
-static void sbus_strbuf_flush(struct sbus_iommu *iommu, u32 base, unsigned long npages)
+static void sbus_strbuf_flush(struct sbus_iommu *iommu, u32 base, unsigned long npages, int direction)
{
unsigned long n;
int limit;
- iommu->strbuf_flushflag = 0UL;
n = npages;
while (n--)
upa_writeq(base + (n << IO_PAGE_SHIFT),
iommu->strbuf_regs + STRBUF_PFLUSH);
+ /* If the device could not have possibly put dirty data into
+ * the streaming cache, no flush-flag synchronization needs
+ * to be performed.
+ */
+ if (direction == SBUS_DMA_TODEVICE)
+ return;
+
+ iommu->strbuf_flushflag = 0UL;
+
/* Whoopee cushion! */
upa_writeq(__pa(&iommu->strbuf_flushflag),
iommu->strbuf_regs + STRBUF_FSYNC);
spin_lock_irqsave(&iommu->lock, flags);
free_streaming_cluster(iommu, dma_base, size >> IO_PAGE_SHIFT);
- sbus_strbuf_flush(iommu, dma_base, size >> IO_PAGE_SHIFT);
+ sbus_strbuf_flush(iommu, dma_base, size >> IO_PAGE_SHIFT, direction);
spin_unlock_irqrestore(&iommu->lock, flags);
}
iommu = sdev->bus->iommu;
spin_lock_irqsave(&iommu->lock, flags);
free_streaming_cluster(iommu, dvma_base, size >> IO_PAGE_SHIFT);
- sbus_strbuf_flush(iommu, dvma_base, size >> IO_PAGE_SHIFT);
+ sbus_strbuf_flush(iommu, dvma_base, size >> IO_PAGE_SHIFT, direction);
spin_unlock_irqrestore(&iommu->lock, flags);
}
size = (IO_PAGE_ALIGN(base + size) - (base & IO_PAGE_MASK));
spin_lock_irqsave(&iommu->lock, flags);
- sbus_strbuf_flush(iommu, base & IO_PAGE_MASK, size >> IO_PAGE_SHIFT);
+ sbus_strbuf_flush(iommu, base & IO_PAGE_MASK, size >> IO_PAGE_SHIFT, direction);
spin_unlock_irqrestore(&iommu->lock, flags);
}
size = IO_PAGE_ALIGN(sg[i].dma_address + sg[i].dma_length) - base;
spin_lock_irqsave(&iommu->lock, flags);
- sbus_strbuf_flush(iommu, base, size >> IO_PAGE_SHIFT);
+ sbus_strbuf_flush(iommu, base, size >> IO_PAGE_SHIFT, direction);
spin_unlock_irqrestore(&iommu->lock, flags);
}
fore_200e-objs += fore200e_pca_fw.o
# guess the target endianess to choose the right PCA-200E firmware image
ifeq ($(CONFIG_ATM_FORE200E_PCA_DEFAULT_FW),y)
- CONFIG_ATM_FORE200E_PCA_FW = $(shell if test -n "`$(CC) -E -dM $(src)/../../include/asm/byteorder.h | grep ' __LITTLE_ENDIAN '`"; then echo $(obj)/pca200e.bin; else echo $(obj)/pca200e_ecd.bin2; fi)
+ byteorder.h := include$(if $(patsubst $(srctree),,$(objtree)),2)/asm/byteorder.h
+ CONFIG_ATM_FORE200E_PCA_FW := $(obj)/pca200e$(if $(shell $(CC) -E -dM $(byteorder.h) | grep ' __LITTLE_ENDIAN '),.bin,_ecd.bin2)
endif
endif
switch(fore200e->state) {
case FORE200E_STATE_COMPLETE:
- if (fore200e->stats)
- kfree(fore200e->stats);
+ kfree(fore200e->stats);
case FORE200E_STATE_IRQ:
free_irq(fore200e->irq, fore200e->atm_dev);
entry, txq->tail, entry->vc_map, entry->skb);
/* free copy of misaligned data */
- if (entry->data)
- kfree(entry->data);
+ kfree(entry->data);
/* remove DMA mapping */
fore200e->bus->dma_unmap(fore200e, entry->tpd->tsd[ 0 ].buffer, entry->tpd->tsd[ 0 ].length,
init_one_failure:
if (atm_dev)
atm_dev_deregister(atm_dev);
- if (he_dev)
- kfree(he_dev);
+ kfree(he_dev);
pci_disable_device(pci_dev);
return err;
}
open_failed:
if (err) {
- if (he_vcc)
- kfree(he_vcc);
+ kfree(he_vcc);
clear_bit(ATM_VF_ADDR, &vcc->flags);
}
else
PRINTK("nicstar%d: RSQ base at 0x%x.\n", i, (u32) card->rsq.base);
/* Initialize SCQ0, the only VBR SCQ used */
- card->scq1 = (scq_info *) NULL;
- card->scq2 = (scq_info *) NULL;
+ card->scq1 = NULL;
+ card->scq2 = NULL;
card->scq0 = get_scq(VBR_SCQSIZE, NS_VRSCD0);
- if (card->scq0 == (scq_info *) NULL)
+ if (card->scq0 == NULL)
{
printk("nicstar%d: can't get SCQ0.\n", i);
error = 12;
int i;
if (size != VBR_SCQSIZE && size != CBR_SCQSIZE)
- return (scq_info *) NULL;
+ return NULL;
scq = (scq_info *) kmalloc(sizeof(scq_info), GFP_KERNEL);
- if (scq == (scq_info *) NULL)
- return (scq_info *) NULL;
+ if (scq == NULL)
+ return NULL;
scq->org = kmalloc(2 * size, GFP_KERNEL);
if (scq->org == NULL)
{
kfree(scq);
- return (scq_info *) NULL;
+ return NULL;
}
scq->skb = (struct sk_buff **) kmalloc(sizeof(struct sk_buff *) *
(size / NS_SCQE_SIZE), GFP_KERNEL);
- if (scq->skb == (struct sk_buff **) NULL)
+ if (scq->skb == NULL)
{
kfree(scq->org);
kfree(scq);
- return (scq_info *) NULL;
+ return NULL;
}
scq->num_entries = size / NS_SCQE_SIZE;
scq->base = (ns_scqe *) ALIGN_ADDRESS(scq->org, size);
vc->cbr_scd = NS_FRSCD + frscdi * NS_FRSCD_SIZE;
scq = get_scq(CBR_SCQSIZE, vc->cbr_scd);
- if (scq == (scq_info *) NULL)
+ if (scq == NULL)
{
PRINTK("nicstar%d: can't get fixed rate SCQ.\n", card->index);
card->scd2vc[frscdi] = NULL;
zatm_dev->tx_bw += vcc->qos.txtp.min_pcr;
dealloc_shaper(vcc->dev,zatm_vcc->shaper);
}
- if (zatm_vcc->ring) kfree(zatm_vcc->ring);
+ kfree(zatm_vcc->ring);
}
return 0;
out:
for (i = 0; i < NR_MBX; i++)
- if (zatm_dev->mbx_start[i] != 0)
- kfree((void *) zatm_dev->mbx_start[i]);
- if (zatm_dev->rx_map != NULL)
- kfree(zatm_dev->rx_map);
- if (zatm_dev->tx_map != NULL)
- kfree(zatm_dev->tx_map);
+ kfree(zatm_dev->mbx_start[i]);
+ kfree(zatm_dev->rx_map);
+ kfree(zatm_dev->tx_map);
free_irq(zatm_dev->irq, dev);
return error;
}
* and is not licensed separately. See file COPYING for details.
*
* TODO (sorted by decreasing priority)
+ * -- Kill first_open (Al Viro fixed the block layer now)
* -- Do resets with usb_device_reset (needs a thread context, use khubd)
* -- set readonly flag for CDs, set removable flag for CF readers
* -- do inquiry and verify we got a disk and not a tape (for LUN mismatch)
- * -- support pphaneuf's SDDR-75 with two LUNs (also broken capacity...)
* -- special case some senses, e.g. 3a/0 -> no media present, reduce retries
* -- verify the 13 conditions and do bulk resets
- * -- normal pool of commands instead of cmdv[]?
* -- kill last_pipe and simply do two-state clearing on both pipes
* -- verify protocol (bulk) from USB descriptors (maybe...)
* -- highmem and sg
#define US_SC_SCSI 0x06 /* Transparent */
/*
+ * This many LUNs per USB device.
+ * Every one of them takes a host, see UB_MAX_HOSTS.
*/
+#define UB_MAX_LUNS 4
+
+/*
+ */
+
#define UB_MINORS_PER_MAJOR 8
#define UB_MAX_CDB_SIZE 16 /* Corresponds to Bulk */
u32 Tag; /* unique per command id */
__le32 DataTransferLength; /* size of data */
u8 Flags; /* direction in bit 0 */
- u8 Lun; /* LUN normally 0 */
+ u8 Lun; /* LUN */
u8 Length; /* of of the CDB */
u8 CDB[UB_MAX_CDB_SIZE]; /* max command */
};
unsigned int len; /* Requested length */
// struct scatterlist sgv[UB_MAX_REQ_SG];
+ struct ub_lun *lun;
void (*done)(struct ub_dev *, struct ub_scsi_cmd *);
void *back;
};
};
/*
- * The UB device instance.
+ * The block device instance (one per LUN).
+ */
+struct ub_lun {
+ struct ub_dev *udev;
+ struct list_head link;
+ struct gendisk *disk;
+ int id; /* Host index */
+ int num; /* LUN number */
+ char name[16];
+
+ int changed; /* Media was changed */
+ int removable;
+ int readonly;
+ int first_open; /* Kludge. See ub_bd_open. */
+
+ /* Use Ingo's mempool if or when we have more than one command. */
+ /*
+ * Currently we never need more than one command for the whole device.
+ * However, giving every LUN a command is a cheap and automatic way
+ * to enforce fairness between them.
+ */
+ int cmda[1];
+ struct ub_scsi_cmd cmdv[1];
+
+ struct ub_capacity capacity;
+};
+
+/*
+ * The USB device instance.
*/
struct ub_dev {
spinlock_t lock;
- int id; /* Number among ub's */
atomic_t poison; /* The USB device is disconnected */
int openc; /* protected by ub_lock! */
/* kref is too implicit for our taste */
unsigned int tagcnt;
- int changed; /* Media was changed */
- int removable;
- int readonly;
- int first_open; /* Kludge. See ub_bd_open. */
- char name[8];
+ char name[12];
struct usb_device *dev;
struct usb_interface *intf;
- struct ub_capacity capacity;
- struct gendisk *disk;
+ struct list_head luns;
unsigned int send_bulk_pipe; /* cached pipe values */
unsigned int recv_bulk_pipe;
struct tasklet_struct tasklet;
- /* XXX Use Ingo's mempool (once we have more than one) */
- int cmda[1];
- struct ub_scsi_cmd cmdv[1];
-
struct ub_scsi_cmd_queue cmd_queue;
struct ub_scsi_cmd top_rqs_cmd; /* REQUEST SENSE */
unsigned char top_sense[UB_SENSE_SIZE];
/*
*/
static void ub_cleanup(struct ub_dev *sc);
-static int ub_bd_rq_fn_1(struct ub_dev *sc, struct request *rq);
-static int ub_cmd_build_block(struct ub_dev *sc, struct ub_scsi_cmd *cmd,
- struct request *rq);
+static int ub_bd_rq_fn_1(struct ub_lun *lun, struct request *rq);
+static int ub_cmd_build_block(struct ub_dev *sc, struct ub_lun *lun,
+ struct ub_scsi_cmd *cmd, struct request *rq);
static int ub_cmd_build_packet(struct ub_dev *sc, struct ub_scsi_cmd *cmd,
struct request *rq);
static void ub_rw_cmd_done(struct ub_dev *sc, struct ub_scsi_cmd *cmd);
static int ub_submit_clear_stall(struct ub_dev *sc, struct ub_scsi_cmd *cmd,
int stalled_pipe);
static void ub_top_sense_done(struct ub_dev *sc, struct ub_scsi_cmd *scmd);
-static int ub_sync_tur(struct ub_dev *sc);
-static int ub_sync_read_cap(struct ub_dev *sc, struct ub_capacity *ret);
+static int ub_sync_tur(struct ub_dev *sc, struct ub_lun *lun);
+static int ub_sync_read_cap(struct ub_dev *sc, struct ub_lun *lun,
+ struct ub_capacity *ret);
+static int ub_probe_lun(struct ub_dev *sc, int lnum);
/*
*/
*/
#define UB_MAX_HOSTS 26
static char ub_hostv[UB_MAX_HOSTS];
+
static DEFINE_SPINLOCK(ub_lock); /* Locks globals and ->openc */
/*
{
struct usb_interface *intf;
struct ub_dev *sc;
+ struct list_head *p;
+ struct ub_lun *lun;
int cnt;
unsigned long flags;
int nc, nh;
spin_lock_irqsave(&sc->lock, flags);
cnt += sprintf(page + cnt,
- "qlen %d qmax %d changed %d removable %d readonly %d\n",
- sc->cmd_queue.qlen, sc->cmd_queue.qmax,
- sc->changed, sc->removable, sc->readonly);
+ "qlen %d qmax %d\n",
+ sc->cmd_queue.qlen, sc->cmd_queue.qmax);
+
+ list_for_each (p, &sc->luns) {
+ lun = list_entry(p, struct ub_lun, link);
+ cnt += sprintf(page + cnt,
+ "lun %u changed %d removable %d readonly %d\n",
+ lun->num, lun->changed, lun->removable, lun->readonly);
+ }
if ((nc = sc->tr.cur + 1) == SCMD_TRACE_SZ) nc = 0;
for (j = 0; j < SCMD_TRACE_SZ; j++) {
*/
static void ub_cleanup(struct ub_dev *sc)
{
+ struct list_head *p;
+ struct ub_lun *lun;
request_queue_t *q;
- /* I don't think queue can be NULL. But... Stolen from sx8.c */
- if ((q = sc->disk->queue) != NULL)
- blk_cleanup_queue(q);
+ while (!list_empty(&sc->luns)) {
+ p = sc->luns.next;
+ lun = list_entry(p, struct ub_lun, link);
+ list_del(p);
- /*
- * If we zero disk->private_data BEFORE put_disk, we have to check
- * for NULL all over the place in open, release, check_media and
- * revalidate, because the block level semaphore is well inside the
- * put_disk. But we cannot zero after the call, because *disk is gone.
- * The sd.c is blatantly racy in this area.
- */
- /* disk->private_data = NULL; */
- put_disk(sc->disk);
- sc->disk = NULL;
+ /* I don't think queue can be NULL. But... Stolen from sx8.c */
+ if ((q = lun->disk->queue) != NULL)
+ blk_cleanup_queue(q);
+ /*
+ * If we zero disk->private_data BEFORE put_disk, we have
+ * to check for NULL all over the place in open, release,
+ * check_media and revalidate, because the block level
+ * semaphore is well inside the put_disk.
+ * But we cannot zero after the call, because *disk is gone.
+ * The sd.c is blatantly racy in this area.
+ */
+ /* disk->private_data = NULL; */
+ put_disk(lun->disk);
+ lun->disk = NULL;
+
+ ub_id_put(lun->id);
+ kfree(lun);
+ }
- ub_id_put(sc->id);
kfree(sc);
}
/*
* The "command allocator".
*/
-static struct ub_scsi_cmd *ub_get_cmd(struct ub_dev *sc)
+static struct ub_scsi_cmd *ub_get_cmd(struct ub_lun *lun)
{
struct ub_scsi_cmd *ret;
- if (sc->cmda[0])
+ if (lun->cmda[0])
return NULL;
- ret = &sc->cmdv[0];
- sc->cmda[0] = 1;
+ ret = &lun->cmdv[0];
+ lun->cmda[0] = 1;
return ret;
}
-static void ub_put_cmd(struct ub_dev *sc, struct ub_scsi_cmd *cmd)
+static void ub_put_cmd(struct ub_lun *lun, struct ub_scsi_cmd *cmd)
{
- if (cmd != &sc->cmdv[0]) {
+ if (cmd != &lun->cmdv[0]) {
printk(KERN_WARNING "%s: releasing a foreign cmd %p\n",
- sc->name, cmd);
+ lun->name, cmd);
return;
}
- if (!sc->cmda[0]) {
- printk(KERN_WARNING "%s: releasing a free cmd\n", sc->name);
+ if (!lun->cmda[0]) {
+ printk(KERN_WARNING "%s: releasing a free cmd\n", lun->name);
return;
}
- sc->cmda[0] = 0;
+ lun->cmda[0] = 0;
}
/*
static void ub_bd_rq_fn(request_queue_t *q)
{
- struct ub_dev *sc = q->queuedata;
+ struct ub_lun *lun = q->queuedata;
struct request *rq;
while ((rq = elv_next_request(q)) != NULL) {
- if (ub_bd_rq_fn_1(sc, rq) != 0) {
+ if (ub_bd_rq_fn_1(lun, rq) != 0) {
blk_stop_queue(q);
break;
}
}
}
-static int ub_bd_rq_fn_1(struct ub_dev *sc, struct request *rq)
+static int ub_bd_rq_fn_1(struct ub_lun *lun, struct request *rq)
{
+ struct ub_dev *sc = lun->udev;
struct ub_scsi_cmd *cmd;
int rc;
- if (atomic_read(&sc->poison) || sc->changed) {
+ if (atomic_read(&sc->poison) || lun->changed) {
blkdev_dequeue_request(rq);
ub_end_rq(rq, 0);
return 0;
}
- if ((cmd = ub_get_cmd(sc)) == NULL)
+ if ((cmd = ub_get_cmd(lun)) == NULL)
return -1;
memset(cmd, 0, sizeof(struct ub_scsi_cmd));
if (blk_pc_request(rq)) {
rc = ub_cmd_build_packet(sc, cmd, rq);
} else {
- rc = ub_cmd_build_block(sc, cmd, rq);
+ rc = ub_cmd_build_block(sc, lun, cmd, rq);
}
if (rc != 0) {
- ub_put_cmd(sc, cmd);
+ ub_put_cmd(lun, cmd);
ub_end_rq(rq, 0);
- blk_start_queue(sc->disk->queue);
return 0;
}
-
cmd->state = UB_CMDST_INIT;
+ cmd->lun = lun;
cmd->done = ub_rw_cmd_done;
cmd->back = rq;
cmd->tag = sc->tagcnt++;
if ((rc = ub_submit_scsi(sc, cmd)) != 0) {
- ub_put_cmd(sc, cmd);
+ ub_put_cmd(lun, cmd);
ub_end_rq(rq, 0);
- blk_start_queue(sc->disk->queue);
return 0;
}
return 0;
}
-static int ub_cmd_build_block(struct ub_dev *sc, struct ub_scsi_cmd *cmd,
- struct request *rq)
+static int ub_cmd_build_block(struct ub_dev *sc, struct ub_lun *lun,
+ struct ub_scsi_cmd *cmd, struct request *rq)
{
int ub_dir;
#if 0 /* We use rq->buffer for now */
sg = &cmd->sgv[0];
n_elem = blk_rq_map_sg(q, rq, sg);
if (n_elem <= 0) {
- ub_put_cmd(sc, cmd);
+ ub_put_cmd(lun, cmd);
ub_end_rq(rq, 0);
blk_start_queue(q);
return 0; /* request with no s/g entries? */
if (n_elem != 1) { /* Paranoia */
printk(KERN_WARNING "%s: request with %d segments\n",
sc->name, n_elem);
- ub_put_cmd(sc, cmd);
+ ub_put_cmd(lun, cmd);
ub_end_rq(rq, 0);
blk_start_queue(q);
return 0;
* The call to blk_queue_hardsect_size() guarantees that request
* is aligned, but it is given in terms of 512 byte units, always.
*/
- block = rq->sector >> sc->capacity.bshift;
- nblks = rq->nr_sectors >> sc->capacity.bshift;
+ block = rq->sector >> lun->capacity.bshift;
+ nblks = rq->nr_sectors >> lun->capacity.bshift;
cmd->cdb[0] = (ub_dir == UB_DIR_READ)? READ_10: WRITE_10;
/* 10-byte uses 4 bytes of LBA: 2147483648KB, 2097152MB, 2048GB */
static void ub_rw_cmd_done(struct ub_dev *sc, struct ub_scsi_cmd *cmd)
{
struct request *rq = cmd->back;
- struct gendisk *disk = sc->disk;
+ struct ub_lun *lun = cmd->lun;
+ struct gendisk *disk = lun->disk;
request_queue_t *q = disk->queue;
int uptodate;
else
uptodate = 0;
- ub_put_cmd(sc, cmd);
+ ub_put_cmd(lun, cmd);
ub_end_rq(rq, uptodate);
blk_start_queue(q);
}
bcb->Tag = cmd->tag; /* Endianness is not important */
bcb->DataTransferLength = cpu_to_le32(cmd->len);
bcb->Flags = (cmd->dir == UB_DIR_READ) ? 0x80 : 0;
- bcb->Lun = 0; /* No multi-LUN yet */
+ bcb->Lun = (cmd->lun != NULL) ? cmd->lun->num : 0;
bcb->Length = cmd->cdb_len;
/* copy the command payload */
* The control pipe clears itself - nothing to do.
* XXX Might try to reset the device here and retry.
*/
- printk(KERN_NOTICE "%s: "
- "stall on control pipe for device %u\n",
- sc->name, sc->dev->devnum);
+ printk(KERN_NOTICE "%s: stall on control pipe\n",
+ sc->name);
goto Bad_End;
}
* The control pipe clears itself - nothing to do.
* XXX Might try to reset the device here and retry.
*/
- printk(KERN_NOTICE "%s: "
- "stall on control pipe for device %u\n",
- sc->name, sc->dev->devnum);
+ printk(KERN_NOTICE "%s: stall on control pipe\n",
+ sc->name);
goto Bad_End;
}
rc = ub_submit_clear_stall(sc, cmd, sc->last_pipe);
if (rc != 0) {
printk(KERN_NOTICE "%s: "
- "unable to submit clear for device %u"
- " (code %d)\n",
- sc->name, sc->dev->devnum, rc);
+ "unable to submit clear (%d)\n",
+ sc->name, rc);
/*
* This is typically ENOMEM or some other such shit.
* Retrying is pointless. Just do Bad End on it...
rc = ub_submit_clear_stall(sc, cmd, sc->last_pipe);
if (rc != 0) {
printk(KERN_NOTICE "%s: "
- "unable to submit clear for device %u"
- " (code %d)\n",
- sc->name, sc->dev->devnum, rc);
+ "unable to submit clear (%d)\n",
+ sc->name, rc);
/*
* This is typically ENOMEM or some other such shit.
* Retrying is pointless. Just do Bad End on it...
rc = ub_submit_clear_stall(sc, cmd, sc->last_pipe);
if (rc != 0) {
printk(KERN_NOTICE "%s: "
- "unable to submit clear for device %u"
- " (code %d)\n",
- sc->name, sc->dev->devnum, rc);
+ "unable to submit clear (%d)\n",
+ sc->name, rc);
/*
* This is typically ENOMEM or some other such shit.
* Retrying is pointless. Just do Bad End on it...
* encounter such a thing, try to read the CSW again.
*/
if (++cmd->stat_count >= 4) {
- printk(KERN_NOTICE "%s: "
- "unable to get CSW on device %u\n",
- sc->name, sc->dev->devnum);
+ printk(KERN_NOTICE "%s: unable to get CSW\n",
+ sc->name);
goto Bad_End;
}
__ub_state_stat(sc, cmd);
*/
if (++cmd->stat_count >= 4) {
printk(KERN_NOTICE "%s: "
- "tag mismatch orig 0x%x reply 0x%x "
- "on device %u\n",
- sc->name, cmd->tag, bcs->Tag,
- sc->dev->devnum);
+ "tag mismatch orig 0x%x reply 0x%x\n",
+ sc->name, cmd->tag, bcs->Tag);
goto Bad_End;
}
__ub_state_stat(sc, cmd);
} else {
printk(KERN_WARNING "%s: "
- "wrong command state %d on device %u\n",
- sc->name, cmd->state, sc->dev->devnum);
+ "wrong command state %d\n",
+ sc->name, cmd->state);
goto Bad_End;
}
return;
if ((rc = usb_submit_urb(&sc->work_urb, GFP_ATOMIC)) != 0) {
/* XXX Clear stalls */
- printk("%s: CSW #%d submit failed (%d)\n", sc->name, cmd->tag, rc); /* P3 */
ub_complete(&sc->work_done);
ub_state_done(sc, cmd, rc);
return;
scmd->state = UB_CMDST_INIT;
scmd->data = sc->top_sense;
scmd->len = UB_SENSE_SIZE;
+ scmd->lun = cmd->lun;
scmd->done = ub_top_sense_done;
scmd->back = cmd;
}
if (cmd != scmd->back) {
printk(KERN_WARNING "%s: "
- "sense done for wrong command 0x%x on device %u\n",
- sc->name, cmd->tag, sc->dev->devnum);
+ "sense done for wrong command 0x%x\n",
+ sc->name, cmd->tag);
return;
}
if (cmd->state != UB_CMDST_SENSE) {
printk(KERN_WARNING "%s: "
- "sense done with bad cmd state %d on device %u\n",
- sc->name, cmd->state, sc->dev->devnum);
+ "sense done with bad cmd state %d\n",
+ sc->name, cmd->state);
return;
}
ub_scsi_urb_compl(sc, cmd);
}
-#if 0
-/* Determine what the maximum LUN supported is */
-int usb_stor_Bulk_max_lun(struct us_data *us)
-{
- int result;
-
- /* issue the command */
- result = usb_stor_control_msg(us, us->recv_ctrl_pipe,
- US_BULK_GET_MAX_LUN,
- USB_DIR_IN | USB_TYPE_CLASS |
- USB_RECIP_INTERFACE,
- 0, us->ifnum, us->iobuf, 1, HZ);
-
- /*
- * Some devices (i.e. Iomega Zip100) need this -- apparently
- * the bulk pipes get STALLed when the GetMaxLUN request is
- * processed. This is, in theory, harmless to all other devices
- * (regardless of if they stall or not).
- */
- if (result < 0) {
- usb_stor_clear_halt(us, us->recv_bulk_pipe);
- usb_stor_clear_halt(us, us->send_bulk_pipe);
- }
-
- US_DEBUGP("GetMaxLUN command result is %d, data is %d\n",
- result, us->iobuf[0]);
-
- /* if we have a successful request, return the result */
- if (result == 1)
- return us->iobuf[0];
-
- /* return the default -- no LUNs */
- return 0;
-}
-#endif
-
/*
* This is called from a process context.
*/
-static void ub_revalidate(struct ub_dev *sc)
+static void ub_revalidate(struct ub_dev *sc, struct ub_lun *lun)
{
- sc->readonly = 0; /* XXX Query this from the device */
+ lun->readonly = 0; /* XXX Query this from the device */
- sc->capacity.nsec = 0;
- sc->capacity.bsize = 512;
- sc->capacity.bshift = 0;
+ lun->capacity.nsec = 0;
+ lun->capacity.bsize = 512;
+ lun->capacity.bshift = 0;
- if (ub_sync_tur(sc) != 0)
+ if (ub_sync_tur(sc, lun) != 0)
return; /* Not ready */
- sc->changed = 0;
+ lun->changed = 0;
- if (ub_sync_read_cap(sc, &sc->capacity) != 0) {
+ if (ub_sync_read_cap(sc, lun, &lun->capacity) != 0) {
/*
* The retry here means something is wrong, either with the
* device, with the transport, or with our code.
* We keep this because sd.c has retries for capacity.
*/
- if (ub_sync_read_cap(sc, &sc->capacity) != 0) {
- sc->capacity.nsec = 0;
- sc->capacity.bsize = 512;
- sc->capacity.bshift = 0;
+ if (ub_sync_read_cap(sc, lun, &lun->capacity) != 0) {
+ lun->capacity.nsec = 0;
+ lun->capacity.bsize = 512;
+ lun->capacity.bshift = 0;
}
}
}
static int ub_bd_open(struct inode *inode, struct file *filp)
{
struct gendisk *disk = inode->i_bdev->bd_disk;
+ struct ub_lun *lun;
struct ub_dev *sc;
unsigned long flags;
int rc;
- if ((sc = disk->private_data) == NULL)
+ if ((lun = disk->private_data) == NULL)
return -ENXIO;
+ sc = lun->udev;
+
spin_lock_irqsave(&ub_lock, flags);
if (atomic_read(&sc->poison)) {
spin_unlock_irqrestore(&ub_lock, flags);
* The bottom line is, Al Viro says that we should not allow
* bdev->bd_invalidated to be set when doing add_disk no matter what.
*/
- if (sc->first_open) {
- if (sc->changed) {
- sc->first_open = 0;
+ if (lun->first_open) {
+ lun->first_open = 0;
+ if (lun->changed) {
rc = -ENOMEDIUM;
goto err_open;
}
}
- if (sc->removable || sc->readonly)
+ if (lun->removable || lun->readonly)
check_disk_change(inode->i_bdev);
/*
* under some pretty murky conditions (a failure of READ CAPACITY).
* We may need it one day.
*/
- if (sc->removable && sc->changed && !(filp->f_flags & O_NDELAY)) {
+ if (lun->removable && lun->changed && !(filp->f_flags & O_NDELAY)) {
rc = -ENOMEDIUM;
goto err_open;
}
- if (sc->readonly && (filp->f_mode & FMODE_WRITE)) {
+ if (lun->readonly && (filp->f_mode & FMODE_WRITE)) {
rc = -EROFS;
goto err_open;
}
static int ub_bd_release(struct inode *inode, struct file *filp)
{
struct gendisk *disk = inode->i_bdev->bd_disk;
- struct ub_dev *sc = disk->private_data;
+ struct ub_lun *lun = disk->private_data;
+ struct ub_dev *sc = lun->udev;
ub_put(sc);
return 0;
*/
static int ub_bd_revalidate(struct gendisk *disk)
{
- struct ub_dev *sc = disk->private_data;
-
- ub_revalidate(sc);
- /* This is pretty much a long term P3 */
- if (!atomic_read(&sc->poison)) { /* Cover sc->dev */
- printk(KERN_INFO "%s: device %u capacity nsec %ld bsize %u\n",
- sc->name, sc->dev->devnum,
- sc->capacity.nsec, sc->capacity.bsize);
- }
+ struct ub_lun *lun = disk->private_data;
+
+ ub_revalidate(lun->udev, lun);
/* XXX Support sector size switching like in sr.c */
- blk_queue_hardsect_size(disk->queue, sc->capacity.bsize);
- set_capacity(disk, sc->capacity.nsec);
- // set_disk_ro(sdkp->disk, sc->readonly);
+ blk_queue_hardsect_size(disk->queue, lun->capacity.bsize);
+ set_capacity(disk, lun->capacity.nsec);
+ // set_disk_ro(sdkp->disk, lun->readonly);
return 0;
}
*/
static int ub_bd_media_changed(struct gendisk *disk)
{
- struct ub_dev *sc = disk->private_data;
+ struct ub_lun *lun = disk->private_data;
- if (!sc->removable)
+ if (!lun->removable)
return 0;
/*
* will fail, then block layer discards the data. Since we never
* spin drives up, such devices simply cannot be used with ub anyway.
*/
- if (ub_sync_tur(sc) != 0) {
- sc->changed = 1;
+ if (ub_sync_tur(lun->udev, lun) != 0) {
+ lun->changed = 1;
return 1;
}
- return sc->changed;
+ return lun->changed;
}
static struct block_device_operations ub_bd_fops = {
/*
* Test if the device has a check condition on it, synchronously.
*/
-static int ub_sync_tur(struct ub_dev *sc)
+static int ub_sync_tur(struct ub_dev *sc, struct ub_lun *lun)
{
struct ub_scsi_cmd *cmd;
enum { ALLOC_SIZE = sizeof(struct ub_scsi_cmd) };
cmd->cdb_len = 6;
cmd->dir = UB_DIR_NONE;
cmd->state = UB_CMDST_INIT;
+ cmd->lun = lun; /* This may be NULL, but that's ok */
cmd->done = ub_probe_done;
cmd->back = &compl;
/*
* Read the SCSI capacity synchronously (for probing).
*/
-static int ub_sync_read_cap(struct ub_dev *sc, struct ub_capacity *ret)
+static int ub_sync_read_cap(struct ub_dev *sc, struct ub_lun *lun,
+ struct ub_capacity *ret)
{
struct ub_scsi_cmd *cmd;
char *p;
cmd->state = UB_CMDST_INIT;
cmd->data = p;
cmd->len = 8;
+ cmd->lun = lun;
cmd->done = ub_probe_done;
cmd->back = &compl;
complete(cop);
}
+/*
+ * Get number of LUNs by the way of Bulk GetMaxLUN command.
+ */
+static int ub_sync_getmaxlun(struct ub_dev *sc)
+{
+ int ifnum = sc->intf->cur_altsetting->desc.bInterfaceNumber;
+ unsigned char *p;
+ enum { ALLOC_SIZE = 1 };
+ struct usb_ctrlrequest *cr;
+ struct completion compl;
+ struct timer_list timer;
+ int nluns;
+ int rc;
+
+ init_completion(&compl);
+
+ rc = -ENOMEM;
+ if ((p = kmalloc(ALLOC_SIZE, GFP_KERNEL)) == NULL)
+ goto err_alloc;
+ *p = 55;
+
+ cr = &sc->work_cr;
+ cr->bRequestType = USB_DIR_IN | USB_TYPE_CLASS | USB_RECIP_INTERFACE;
+ cr->bRequest = US_BULK_GET_MAX_LUN;
+ cr->wValue = cpu_to_le16(0);
+ cr->wIndex = cpu_to_le16(ifnum);
+ cr->wLength = cpu_to_le16(1);
+
+ usb_fill_control_urb(&sc->work_urb, sc->dev, sc->recv_ctrl_pipe,
+ (unsigned char*) cr, p, 1, ub_probe_urb_complete, &compl);
+ sc->work_urb.transfer_flags = 0;
+ sc->work_urb.actual_length = 0;
+ sc->work_urb.error_count = 0;
+ sc->work_urb.status = 0;
+
+ if ((rc = usb_submit_urb(&sc->work_urb, GFP_KERNEL)) != 0) {
+ if (rc == -EPIPE) {
+ printk("%s: Stall at GetMaxLUN, using 1 LUN\n",
+ sc->name); /* P3 */
+ } else {
+ printk(KERN_WARNING
+ "%s: Unable to submit GetMaxLUN (%d)\n",
+ sc->name, rc);
+ }
+ goto err_submit;
+ }
+
+ init_timer(&timer);
+ timer.function = ub_probe_timeout;
+ timer.data = (unsigned long) &compl;
+ timer.expires = jiffies + UB_CTRL_TIMEOUT;
+ add_timer(&timer);
+
+ wait_for_completion(&compl);
+
+ del_timer_sync(&timer);
+ usb_kill_urb(&sc->work_urb);
+
+ if (sc->work_urb.actual_length != 1) {
+ printk("%s: GetMaxLUN returned %d bytes\n", sc->name,
+ sc->work_urb.actual_length); /* P3 */
+ nluns = 0;
+ } else {
+ if ((nluns = *p) == 55) {
+ nluns = 0;
+ } else {
+ /* GetMaxLUN returns the maximum LUN number */
+ nluns += 1;
+ if (nluns > UB_MAX_LUNS)
+ nluns = UB_MAX_LUNS;
+ }
+ printk("%s: GetMaxLUN returned %d, using %d LUNs\n", sc->name,
+ *p, nluns); /* P3 */
+ }
+
+ kfree(p);
+ return nluns;
+
+err_submit:
+ kfree(p);
+err_alloc:
+ return rc;
+}
+
/*
* Clear initial stalls.
*/
}
if (ep_in == NULL || ep_out == NULL) {
- printk(KERN_NOTICE "%s: device %u failed endpoint check\n",
- sc->name, sc->dev->devnum);
+ printk(KERN_NOTICE "%s: failed endpoint check\n",
+ sc->name);
return -EIO;
}
const struct usb_device_id *dev_id)
{
struct ub_dev *sc;
- request_queue_t *q;
- struct gendisk *disk;
+ int nluns;
int rc;
int i;
goto err_core;
memset(sc, 0, sizeof(struct ub_dev));
spin_lock_init(&sc->lock);
+ INIT_LIST_HEAD(&sc->luns);
usb_init_urb(&sc->work_urb);
tasklet_init(&sc->tasklet, ub_scsi_action, (unsigned long)sc);
atomic_set(&sc->poison, 0);
ub_init_completion(&sc->work_done);
sc->work_done.done = 1; /* A little yuk, but oh well... */
- rc = -ENOSR;
- if ((sc->id = ub_id_get()) == -1)
- goto err_id;
- snprintf(sc->name, 8, DRV_NAME "%c", sc->id + 'a');
-
sc->dev = interface_to_usbdev(intf);
sc->intf = intf;
// sc->ifnum = intf->cur_altsetting->desc.bInterfaceNumber;
-
usb_set_intfdata(intf, sc);
usb_get_dev(sc->dev);
// usb_get_intf(sc->intf); /* Do we need this? */
+ snprintf(sc->name, 12, DRV_NAME "(%d.%d)",
+ sc->dev->bus->busnum, sc->dev->devnum);
+
/* XXX Verify that we can handle the device (from descriptors) */
ub_get_pipes(sc, sc->dev, intf);
* In any case it's not our business how revaliadation is implemented.
*/
for (i = 0; i < 3; i++) { /* Retries for benh's key */
- if ((rc = ub_sync_tur(sc)) <= 0) break;
+ if ((rc = ub_sync_tur(sc, NULL)) <= 0) break;
if (rc != 0x6) break;
msleep(10);
}
- sc->removable = 1; /* XXX Query this from the device */
- sc->changed = 1; /* ub_revalidate clears only */
- sc->first_open = 1;
+ nluns = 1;
+ for (i = 0; i < 3; i++) {
+ if ((rc = ub_sync_getmaxlun(sc)) < 0) {
+ /*
+ * Some devices (i.e. Iomega Zip100) need this --
+ * apparently the bulk pipes get STALLed when the
+ * GetMaxLUN request is processed.
+ * XXX I have a ZIP-100, verify it does this.
+ */
+ if (rc == -EPIPE) {
+ ub_probe_clear_stall(sc, sc->recv_bulk_pipe);
+ ub_probe_clear_stall(sc, sc->send_bulk_pipe);
+ }
+ break;
+ }
+ if (rc != 0) {
+ nluns = rc;
+ break;
+ }
+ mdelay(100);
+ }
- ub_revalidate(sc);
- /* This is pretty much a long term P3 */
- printk(KERN_INFO "%s: device %u capacity nsec %ld bsize %u\n",
- sc->name, sc->dev->devnum, sc->capacity.nsec, sc->capacity.bsize);
+ for (i = 0; i < nluns; i++) {
+ ub_probe_lun(sc, i);
+ }
+ return 0;
+
+ /* device_remove_file(&sc->intf->dev, &dev_attr_diag); */
+err_diag:
+ usb_set_intfdata(intf, NULL);
+ // usb_put_intf(sc->intf);
+ usb_put_dev(sc->dev);
+ kfree(sc);
+err_core:
+ return rc;
+}
+
+static int ub_probe_lun(struct ub_dev *sc, int lnum)
+{
+ struct ub_lun *lun;
+ request_queue_t *q;
+ struct gendisk *disk;
+ int rc;
+
+ rc = -ENOMEM;
+ if ((lun = kmalloc(sizeof(struct ub_lun), GFP_KERNEL)) == NULL)
+ goto err_alloc;
+ memset(lun, 0, sizeof(struct ub_lun));
+ lun->num = lnum;
+
+ rc = -ENOSR;
+ if ((lun->id = ub_id_get()) == -1)
+ goto err_id;
+
+ lun->udev = sc;
+ list_add(&lun->link, &sc->luns);
+
+ snprintf(lun->name, 16, DRV_NAME "%c(%d.%d.%d)",
+ lun->id + 'a', sc->dev->bus->busnum, sc->dev->devnum, lun->num);
+
+ lun->removable = 1; /* XXX Query this from the device */
+ lun->changed = 1; /* ub_revalidate clears only */
+ lun->first_open = 1;
+ ub_revalidate(sc, lun);
- /*
- * Just one disk per sc currently, but maybe more.
- */
rc = -ENOMEM;
if ((disk = alloc_disk(UB_MINORS_PER_MAJOR)) == NULL)
goto err_diskalloc;
- sc->disk = disk;
- sprintf(disk->disk_name, DRV_NAME "%c", sc->id + 'a');
- sprintf(disk->devfs_name, DEVFS_NAME "/%c", sc->id + 'a');
+ lun->disk = disk;
+ sprintf(disk->disk_name, DRV_NAME "%c", lun->id + 'a');
+ sprintf(disk->devfs_name, DEVFS_NAME "/%c", lun->id + 'a');
disk->major = UB_MAJOR;
- disk->first_minor = sc->id * UB_MINORS_PER_MAJOR;
+ disk->first_minor = lun->id * UB_MINORS_PER_MAJOR;
disk->fops = &ub_bd_fops;
- disk->private_data = sc;
- disk->driverfs_dev = &intf->dev;
+ disk->private_data = lun;
+ disk->driverfs_dev = &sc->intf->dev; /* XXX Many to one ok? */
rc = -ENOMEM;
if ((q = blk_init_queue(ub_bd_rq_fn, &sc->lock)) == NULL)
disk->queue = q;
- // blk_queue_bounce_limit(q, hba[i]->pdev->dma_mask);
+ blk_queue_bounce_limit(q, BLK_BOUNCE_HIGH);
blk_queue_max_hw_segments(q, UB_MAX_REQ_SG);
blk_queue_max_phys_segments(q, UB_MAX_REQ_SG);
- // blk_queue_segment_boundary(q, CARM_SG_BOUNDARY);
+ blk_queue_segment_boundary(q, 0xffffffff); /* Dubious. */
blk_queue_max_sectors(q, UB_MAX_SECTORS);
- blk_queue_hardsect_size(q, sc->capacity.bsize);
-
- /*
- * This is a serious infraction, caused by a deficiency in the
- * USB sg interface (usb_sg_wait()). We plan to remove this once
- * we get mileage on the driver and can justify a change to USB API.
- * See blk_queue_bounce_limit() to understand this part.
- *
- * XXX And I still need to be aware of the DMA mask in the HC.
- */
- q->bounce_pfn = blk_max_low_pfn;
- q->bounce_gfp = GFP_NOIO;
+ blk_queue_hardsect_size(q, lun->capacity.bsize);
- q->queuedata = sc;
+ q->queuedata = lun;
- set_capacity(disk, sc->capacity.nsec);
- if (sc->removable)
+ set_capacity(disk, lun->capacity.nsec);
+ if (lun->removable)
disk->flags |= GENHD_FL_REMOVABLE;
add_disk(disk);
err_blkqinit:
put_disk(disk);
err_diskalloc:
- device_remove_file(&sc->intf->dev, &dev_attr_diag);
-err_diag:
- usb_set_intfdata(intf, NULL);
- // usb_put_intf(sc->intf);
- usb_put_dev(sc->dev);
- ub_id_put(sc->id);
+ list_del(&lun->link);
+ ub_id_put(lun->id);
err_id:
- kfree(sc);
-err_core:
+ kfree(lun);
+err_alloc:
return rc;
}
static void ub_disconnect(struct usb_interface *intf)
{
struct ub_dev *sc = usb_get_intfdata(intf);
- struct gendisk *disk = sc->disk;
+ struct list_head *p;
+ struct ub_lun *lun;
+ struct gendisk *disk;
unsigned long flags;
/*
/*
* Unregister the upper layer.
*/
- if (disk->flags & GENHD_FL_UP)
- del_gendisk(disk);
- /*
- * I wish I could do:
- * set_bit(QUEUE_FLAG_DEAD, &q->queue_flags);
- * As it is, we rely on our internal poisoning and let
- * the upper levels to spin furiously failing all the I/O.
- */
+ list_for_each (p, &sc->luns) {
+ lun = list_entry(p, struct ub_lun, link);
+ disk = lun->disk;
+ if (disk->flags & GENHD_FL_UP)
+ del_gendisk(disk);
+ /*
+ * I wish I could do:
+ * set_bit(QUEUE_FLAG_DEAD, &q->queue_flags);
+ * As it is, we rely on our internal poisoning and let
+ * the upper levels to spin furiously failing all the I/O.
+ */
+ }
/*
* Taking a lock on a structure which is about to be freed
{
int rc;
- /* P3 */ printk("ub: sizeof ub_scsi_cmd %zu ub_dev %zu\n",
- sizeof(struct ub_scsi_cmd), sizeof(struct ub_dev));
+ /* P3 */ printk("ub: sizeof ub_scsi_cmd %zu ub_dev %zu ub_lun %zu\n",
+ sizeof(struct ub_scsi_cmd), sizeof(struct ub_dev), sizeof(struct ub_lun));
if ((rc = register_blkdev(UB_MAJOR, DRV_NAME)) != 0)
goto err_regblkdev;
#define AGP_GENERIC_SIZES_ENTRIES 11
extern struct aper_size_info_16 agp3_generic_sizes[];
+#define virt_to_gart(x) (phys_to_gart(virt_to_phys(x)))
+#define gart_to_virt(x) (phys_to_virt(gart_to_phys(x)))
extern int agp_off;
extern int agp_try_unsupported_boot;
pci_read_config_dword(agp_bridge->dev, ALI_CACHE_FLUSH_CTRL, &temp);
pci_write_config_dword(agp_bridge->dev, ALI_CACHE_FLUSH_CTRL,
(((temp & ALI_CACHE_FLUSH_ADDR_MASK) |
- virt_to_phys(addr)) | ALI_CACHE_FLUSH_EN ));
+ virt_to_gart(addr)) | ALI_CACHE_FLUSH_EN ));
return addr;
}
pci_read_config_dword(agp_bridge->dev, ALI_CACHE_FLUSH_CTRL, &temp);
pci_write_config_dword(agp_bridge->dev, ALI_CACHE_FLUSH_CTRL,
(((temp & ALI_CACHE_FLUSH_ADDR_MASK) |
- virt_to_phys(addr)) | ALI_CACHE_FLUSH_EN));
+ virt_to_gart(addr)) | ALI_CACHE_FLUSH_EN));
agp_generic_destroy_page(addr);
}
SetPageReserved(virt_to_page(page_map->real));
global_cache_flush();
- page_map->remapped = ioremap_nocache(virt_to_phys(page_map->real),
+ page_map->remapped = ioremap_nocache(virt_to_gart(page_map->real),
PAGE_SIZE);
if (page_map->remapped == NULL) {
ClearPageReserved(virt_to_page(page_map->real));
agp_bridge->gatt_table_real = (u32 *)page_dir.real;
agp_bridge->gatt_table = (u32 __iomem *)page_dir.remapped;
- agp_bridge->gatt_bus_addr = virt_to_phys(page_dir.real);
+ agp_bridge->gatt_bus_addr = virt_to_gart(page_dir.real);
/* Get the address for the gart region.
* This is a bus address even on the alpha, b/c its
/* Calculate the agp offset */
for (i = 0; i < value->num_entries / 1024; i++, addr += 0x00400000) {
- writel(virt_to_phys(amd_irongate_private.gatt_pages[i]->real) | 1,
+ writel(virt_to_gart(amd_irongate_private.gatt_pages[i]->real) | 1,
page_dir.remapped+GET_PAGE_DIR_OFF(addr));
readl(page_dir.remapped+GET_PAGE_DIR_OFF(addr)); /* PCI Posting. */
}
static int amd_8151_configure(void)
{
- unsigned long gatt_bus = virt_to_phys(agp_bridge->gatt_table_real);
+ unsigned long gatt_bus = virt_to_gart(agp_bridge->gatt_table_real);
/* Configure AGP regs in each x86-64 host bridge. */
for_each_nb() {
{
struct agp_bridge_data *bridge = pci_get_drvdata(pdev);
- release_mem_region(virt_to_phys(bridge->gatt_table_real),
+ release_mem_region(virt_to_gart(bridge->gatt_table_real),
amd64_aperture_sizes[bridge->aperture_size_idx].size);
agp_remove_bridge(bridge);
agp_put_bridge(bridge);
SetPageReserved(virt_to_page(page_map->real));
err = map_page_into_agp(virt_to_page(page_map->real));
- page_map->remapped = ioremap_nocache(virt_to_phys(page_map->real),
+ page_map->remapped = ioremap_nocache(virt_to_gart(page_map->real),
PAGE_SIZE);
if (page_map->remapped == NULL || err) {
ClearPageReserved(virt_to_page(page_map->real));
agp_bridge->gatt_table_real = (u32 *)page_dir.real;
agp_bridge->gatt_table = (u32 __iomem *) page_dir.remapped;
- agp_bridge->gatt_bus_addr = virt_to_bus(page_dir.real);
+ agp_bridge->gatt_bus_addr = virt_to_gart(page_dir.real);
/* Write out the size register */
current_size = A_SIZE_LVL2(agp_bridge->current_size);
/* Calculate the agp offset */
for(i = 0; i < value->num_entries / 1024; i++, addr += 0x00400000) {
- writel(virt_to_bus(ati_generic_private.gatt_pages[i]->real) | 1,
+ writel(virt_to_gart(ati_generic_private.gatt_pages[i]->real) | 1,
page_dir.remapped+GET_PAGE_DIR_OFF(addr));
readl(page_dir.remapped+GET_PAGE_DIR_OFF(addr)); /* PCI Posting. */
}
return -ENOMEM;
}
- bridge->scratch_page_real = virt_to_phys(addr);
+ bridge->scratch_page_real = virt_to_gart(addr);
bridge->scratch_page =
bridge->driver->mask_memory(bridge, bridge->scratch_page_real, 0);
}
err_out:
if (bridge->driver->needs_scratch_page)
bridge->driver->agp_destroy_page(
- phys_to_virt(bridge->scratch_page_real));
+ gart_to_virt(bridge->scratch_page_real));
if (got_gatt)
bridge->driver->free_gatt_table(bridge);
if (got_keylist) {
if (bridge->driver->agp_destroy_page &&
bridge->driver->needs_scratch_page)
bridge->driver->agp_destroy_page(
- phys_to_virt(bridge->scratch_page_real));
+ gart_to_virt(bridge->scratch_page_real));
}
/* When we remove the global variable agp_bridge from all drivers
efficeon_private.l1_table[index] = page;
- value = __pa(page) | pati | present | index;
+ value = virt_to_gart(page) | pati | present | index;
pci_write_config_dword(agp_bridge->dev,
EFFICEON_ATTPAGE, value);
}
if (curr->page_count != 0) {
for (i = 0; i < curr->page_count; i++) {
- curr->bridge->driver->agp_destroy_page(phys_to_virt(curr->memory[i]));
+ curr->bridge->driver->agp_destroy_page(gart_to_virt(curr->memory[i]));
}
}
agp_free_key(curr->key);
agp_free_memory(new);
return NULL;
}
- new->memory[i] = virt_to_phys(addr);
+ new->memory[i] = virt_to_gart(addr);
new->page_count++;
}
new->bridge = bridge;
EXPORT_SYMBOL_GPL(agp_num_entries);
-static int check_bridge_mode(struct pci_dev *dev)
-{
- u32 agp3;
- u8 cap_ptr;
-
- cap_ptr = pci_find_capability(dev, PCI_CAP_ID_AGP);
- pci_read_config_dword(dev, cap_ptr+AGPSTAT, &agp3);
- if (agp3 & AGPSTAT_MODE_3_0)
- return 1;
- return 0;
-}
-
-
/**
* agp_copy_info - copy bridge state information
*
info->version.minor = bridge->version->minor;
info->chipset = SUPPORTED;
info->device = bridge->dev;
- if (check_bridge_mode(bridge->dev))
+ if (bridge->mode & AGPSTAT_MODE_3_0)
info->mode = bridge->mode & ~AGP3_RESERVED_MASK;
else
info->mode = bridge->mode & ~AGP2_RESERVED_MASK;
bridge_agpstat &= ~AGPSTAT_FW;
/* Check to see if we are operating in 3.0 mode */
- if (check_bridge_mode(agp_bridge->dev))
+ if (agp_bridge->mode & AGPSTAT_MODE_3_0)
agp_v3_parse_one(&requested_mode, &bridge_agpstat, &vga_agpstat);
else
agp_v2_parse_one(&requested_mode, &bridge_agpstat, &vga_agpstat);
/* Do AGP version specific frobbing. */
if (bridge->major_version >= 3) {
- if (check_bridge_mode(bridge->dev)) {
+ if (bridge->mode & AGPSTAT_MODE_3_0) {
/* If we have 3.5, we can do the isoch stuff. */
if (bridge->minor_version >= 5)
agp_3_5_enable(bridge);
break;
}
- table = (char *) __get_free_pages(GFP_KERNEL,
- page_order);
+ table = alloc_gatt_pages(page_order);
if (table == NULL) {
i++;
size = ((struct aper_size_info_fixed *) temp)->size;
page_order = ((struct aper_size_info_fixed *) temp)->page_order;
num_entries = ((struct aper_size_info_fixed *) temp)->num_entries;
- table = (char *) __get_free_pages(GFP_KERNEL, page_order);
+ table = alloc_gatt_pages(page_order);
}
if (table == NULL)
agp_gatt_table = (void *)table;
bridge->driver->cache_flush();
- bridge->gatt_table = ioremap_nocache(virt_to_phys(table),
+ bridge->gatt_table = ioremap_nocache(virt_to_gart(table),
(PAGE_SIZE * (1 << page_order)));
bridge->driver->cache_flush();
for (page = virt_to_page(table); page <= virt_to_page(table_end); page++)
ClearPageReserved(page);
- free_pages((unsigned long) table, page_order);
+ free_gatt_pages(table, page_order);
return -ENOMEM;
}
- bridge->gatt_bus_addr = virt_to_phys(bridge->gatt_table_real);
+ bridge->gatt_bus_addr = virt_to_gart(bridge->gatt_table_real);
/* AK: bogus, should encode addresses > 4GB */
for (i = 0; i < num_entries; i++) {
for (page = virt_to_page(table); page <= virt_to_page(table_end); page++)
ClearPageReserved(page);
- free_pages((unsigned long) bridge->gatt_table_real, page_order);
+ free_gatt_pages(bridge->gatt_table_real, page_order);
agp_gatt_table = NULL;
bridge->gatt_table = NULL;
hp->gart_size = HP_ZX1_GART_SIZE;
hp->gatt_entries = hp->gart_size / hp->io_page_size;
- hp->io_pdir = phys_to_virt(readq(hp->ioc_regs+HP_ZX1_PDIR_BASE));
+ hp->io_pdir = gart_to_virt(readq(hp->ioc_regs+HP_ZX1_PDIR_BASE));
hp->gatt = &hp->io_pdir[HP_ZX1_IOVA_TO_PDIR(hp->gart_base)];
if (hp->gatt[0] != HP_ZX1_SBA_IOMMU_COOKIE) {
agp_bridge->mode = readl(hp->lba_regs+hp->lba_cap_offset+PCI_AGP_STATUS);
if (hp->io_pdir_owner) {
- writel(virt_to_phys(hp->io_pdir), hp->ioc_regs+HP_ZX1_PDIR_BASE);
+ writel(virt_to_gart(hp->io_pdir), hp->ioc_regs+HP_ZX1_PDIR_BASE);
readl(hp->ioc_regs+HP_ZX1_PDIR_BASE);
writel(hp->io_tlb_ps, hp->ioc_regs+HP_ZX1_TCNFG);
readl(hp->ioc_regs+HP_ZX1_TCNFG);
}
memset(lp->alloced_map, 0, map_size);
- lp->paddr = virt_to_phys(lpage);
+ lp->paddr = virt_to_gart(lpage);
lp->refcount = 0;
atomic_add(I460_KPAGES_PER_IOPAGE, &agp_bridge->current_memory_agp);
return 0;
kfree(lp->alloced_map);
lp->alloced_map = NULL;
- free_pages((unsigned long) phys_to_virt(lp->paddr), I460_IO_PAGE_SHIFT - PAGE_SHIFT);
+ free_pages((unsigned long) gart_to_virt(lp->paddr), I460_IO_PAGE_SHIFT - PAGE_SHIFT);
atomic_sub(I460_KPAGES_PER_IOPAGE, &agp_bridge->current_memory_agp);
}
if (new == NULL)
return NULL;
- new->memory[0] = virt_to_phys(addr);
+ new->memory[0] = virt_to_gart(addr);
if (pg_count == 4) {
/* kludge to get 4 physical pages for ARGB cursor */
new->memory[1] = new->memory[0] + PAGE_SIZE;
agp_free_key(curr->key);
if(curr->type == AGP_PHYS_MEMORY) {
if (curr->page_count == 4)
- i8xx_destroy_pages(phys_to_virt(curr->memory[0]));
+ i8xx_destroy_pages(gart_to_virt(curr->memory[0]));
else
agp_bridge->driver->agp_destroy_page(
- phys_to_virt(curr->memory[0]));
+ gart_to_virt(curr->memory[0]));
vfree(curr->memory);
}
kfree(curr);
case I915_GMCH_GMS_STOLEN_48M:
/* Check it's really I915G */
if (agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_82915G_HB ||
- agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_82915GM_HB)
+ agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_82915GM_HB ||
+ agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_82945G_HB)
gtt_entries = MB(48) - KB(size);
else
gtt_entries = 0;
case I915_GMCH_GMS_STOLEN_64M:
/* Check it's really I915G */
if (agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_82915G_HB ||
- agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_82915GM_HB)
+ agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_82915GM_HB ||
+ agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_82945G_HB)
gtt_entries = MB(64) - KB(size);
else
gtt_entries = 0;
}
name = "915GM";
break;
+ case PCI_DEVICE_ID_INTEL_82945G_HB:
+ if (find_i830(PCI_DEVICE_ID_INTEL_82945G_IG)) {
+ bridge->driver = &intel_915_driver;
+ } else {
+ bridge->driver = &intel_845_driver;
+ }
+ name = "945G";
+ break;
case PCI_DEVICE_ID_INTEL_7505_0:
bridge->driver = &intel_7505_driver;
name = "E7505";
ID(PCI_DEVICE_ID_INTEL_7205_0),
ID(PCI_DEVICE_ID_INTEL_82915G_HB),
ID(PCI_DEVICE_ID_INTEL_82915GM_HB),
+ ID(PCI_DEVICE_ID_INTEL_82945G_HB),
{ }
};
off_t j;
void *temp;
struct agp_bridge_data *bridge;
+ u64 *table;
bridge = mem->bridge;
if (!bridge)
return -EINVAL;
+ table = (u64 *)bridge->gatt_table;
+
temp = bridge->current_size;
switch (bridge->driver->size_type) {
j = pg_start;
while (j < (pg_start + mem->page_count)) {
- if (*(bridge->gatt_table + j))
+ if (table[j])
return -EBUSY;
j++;
}
}
for (i = 0, j = pg_start; i < mem->page_count; i++, j++) {
- *(bridge->gatt_table + j) =
+ table[j] =
bridge->driver->mask_memory(bridge, mem->memory[i],
mem->type);
}
{
size_t i;
struct agp_bridge_data *bridge;
+ u64 *table;
bridge = mem->bridge;
if (!bridge)
return -EINVAL;
}
+ table = (u64 *)bridge->gatt_table;
+
for (i = pg_start; i < (mem->page_count + pg_start); i++) {
- *(bridge->gatt_table + i) = 0;
+ table[i] = 0;
}
bridge->driver->tlb_flush(mem);
}
SetPageReserved(virt_to_page(page_map->real));
global_cache_flush();
- page_map->remapped = ioremap_nocache(virt_to_phys(page_map->real),
+ page_map->remapped = ioremap_nocache(virt_to_gart(page_map->real),
PAGE_SIZE);
if (page_map->remapped == NULL) {
ClearPageReserved(virt_to_page(page_map->real));
/* Create a fake scratch directory */
for(i = 0; i < 1024; i++) {
writel(agp_bridge->scratch_page, serverworks_private.scratch_dir.remapped+i);
- writel(virt_to_phys(serverworks_private.scratch_dir.real) | 1, page_dir.remapped+i);
+ writel(virt_to_gart(serverworks_private.scratch_dir.real) | 1, page_dir.remapped+i);
}
retval = serverworks_create_gatt_pages(value->num_entries / 1024);
agp_bridge->gatt_table_real = (u32 *)page_dir.real;
agp_bridge->gatt_table = (u32 __iomem *)page_dir.remapped;
- agp_bridge->gatt_bus_addr = virt_to_phys(page_dir.real);
+ agp_bridge->gatt_bus_addr = virt_to_gart(page_dir.real);
/* Get the address for the gart region.
* This is a bus address even on the alpha, b/c its
/* Calculate the agp offset */
for(i = 0; i < value->num_entries / 1024; i++)
- writel(virt_to_phys(serverworks_private.gatt_pages[i]->real)|1, page_dir.remapped+i);
+ writel(virt_to_gart(serverworks_private.gatt_pages[i]->real)|1, page_dir.remapped+i);
return 0;
}
bridge->gatt_table_real = (u32 *) table;
bridge->gatt_table = (u32 *)table;
- bridge->gatt_bus_addr = virt_to_phys(table);
+ bridge->gatt_bus_addr = virt_to_gart(table);
for (i = 0; i < num_entries; i++)
bridge->gatt_table[i] = 0;
unsigned char ch, gdl;
int ignored = 0;
int cnt = 0;
- unsigned char *cp;
- char *fp;
- int count;
int recv_room;
int max = 256;
unsigned long flags;
//return;
}
- cp = tty->flip.char_buf;
- fp = tty->flip.flag_buf;
- count = 0;
-
// following add by Victor Yu. 09-02-2002
if (info->IsMoxaMustChipFlag != MOXA_OTHER_UART) {
}
while (gdl--) {
ch = inb(info->base + UART_RX);
- count++;
- *cp++ = ch;
- *fp++ = 0;
+ tty_insert_flip_char(tty, ch, 0);
cnt++;
/*
- if((count>=HI_WATER) && (info->stop_rx==0)){
+ if((cnt>=HI_WATER) && (info->stop_rx==0)){
mxser_stoprx(tty);
info->stop_rx=1;
break;
if (max-- < 0)
break;
/*
- if((count>=HI_WATER) && (info->stop_rx==0)){
+ if((cnt>=HI_WATER) && (info->stop_rx==0)){
mxser_stoprx(tty);
info->stop_rx=1;
break;
if (++ignored > 100)
break;
} else {
- count++;
+ char flag = 0;
if (*status & UART_LSR_SPECIAL) {
if (*status & UART_LSR_BI) {
- *fp++ = TTY_BREAK;
+ flag = TTY_BREAK;
/* added by casper 1/11/2000 */
info->icount.brk++;
-
/* */
if (info->flags & ASYNC_SAK)
do_SAK(tty);
} else if (*status & UART_LSR_PE) {
- *fp++ = TTY_PARITY;
+ flag = TTY_PARITY;
/* added by casper 1/11/2000 */
info->icount.parity++;
/* */
} else if (*status & UART_LSR_FE) {
- *fp++ = TTY_FRAME;
+ flag = TTY_FRAME;
/* added by casper 1/11/2000 */
info->icount.frame++;
/* */
} else if (*status & UART_LSR_OE) {
- *fp++ = TTY_OVERRUN;
+ flag = TTY_OVERRUN;
/* added by casper 1/11/2000 */
info->icount.overrun++;
/* */
- } else
- *fp++ = 0;
- } else
- *fp++ = 0;
- *cp++ = ch;
+ }
+ }
+ tty_insert_flip_char(tty, ch, flag);
cnt++;
if (cnt >= recv_room) {
if (!info->ldisc_stop_rx) {
// above add by Victor Yu. 09-02-2002
} while (*status & UART_LSR_DR);
- end_intr: // add by Victor Yu. 09-02-2002
+end_intr: // add by Victor Yu. 09-02-2002
mxvar_log.rxcnt[info->port] += cnt;
info->mon_data.rxcnt += cnt;
info->mon_data.up_rxcnt += cnt;
spin_unlock_irqrestore(&info->slock, flags);
-
+
tty_flip_buffer_push(tty);
}
module_param_named(softraw, atkbd_softraw, bool, 0);
MODULE_PARM_DESC(softraw, "Use software generated rawmode");
-static int atkbd_scroll = 1;
+static int atkbd_scroll = 0;
module_param_named(scroll, atkbd_scroll, bool, 0);
MODULE_PARM_DESC(scroll, "Enable scroll-wheel on MS Office and similar keyboards");
}
/* --------------------------------------------------------------------- */
-/*
- * high performance HDLC encoder
- * yes, it's ugly, but generates pretty good code
- */
-
-#define ENCODEITERA(j) \
-({ \
- if (!(notbitstream & (0x1f0 << j))) \
- goto stuff##j; \
- encodeend##j: ; \
-})
-
-#define ENCODEITERB(j) \
-({ \
- stuff##j: \
- bitstream &= ~(0x100 << j); \
- bitbuf = (bitbuf & (((2 << j) << numbit) - 1)) | \
- ((bitbuf & ~(((2 << j) << numbit) - 1)) << 1); \
- numbit++; \
- notbitstream = ~bitstream; \
- goto encodeend##j; \
-})
-
static void encode_hdlc(struct baycom_state *bc)
{
int pkt_len;
unsigned bitstream, notbitstream, bitbuf, numbit, crc;
unsigned char crcarr[2];
+ int j;
if (bc->hdlctx.bufcnt > 0)
return;
pkt_len--;
if (!pkt_len)
bp = crcarr;
- ENCODEITERA(0);
- ENCODEITERA(1);
- ENCODEITERA(2);
- ENCODEITERA(3);
- ENCODEITERA(4);
- ENCODEITERA(5);
- ENCODEITERA(6);
- ENCODEITERA(7);
- goto enditer;
- ENCODEITERB(0);
- ENCODEITERB(1);
- ENCODEITERB(2);
- ENCODEITERB(3);
- ENCODEITERB(4);
- ENCODEITERB(5);
- ENCODEITERB(6);
- ENCODEITERB(7);
- enditer:
+ for (j = 0; j < 8; j++)
+ if (unlikely(!(notbitstream & (0x1f0 << j)))) {
+ bitstream &= ~(0x100 << j);
+ bitbuf = (bitbuf & (((2 << j) << numbit) - 1)) |
+ ((bitbuf & ~(((2 << j) << numbit) - 1)) << 1);
+ numbit++;
+ notbitstream = ~bitstream;
+ }
numbit += 8;
while (numbit >= 8) {
*wp++ = bitbuf;
bc->stats.rx_packets++;
}
-#define DECODEITERA(j) \
-({ \
- if (!(notbitstream & (0x0fc << j))) /* flag or abort */ \
- goto flgabrt##j; \
- if ((bitstream & (0x1f8 << j)) == (0xf8 << j)) /* stuffed bit */ \
- goto stuff##j; \
- enditer##j: ; \
-})
-
-#define DECODEITERB(j) \
-({ \
- flgabrt##j: \
- if (!(notbitstream & (0x1fc << j))) { /* abort received */ \
- state = 0; \
- goto enditer##j; \
- } \
- if ((bitstream & (0x1fe << j)) != (0x0fc << j)) /* flag received */ \
- goto enditer##j; \
- if (state) \
- do_rxpacket(dev); \
- bc->hdlcrx.bufcnt = 0; \
- bc->hdlcrx.bufptr = bc->hdlcrx.buf; \
- state = 1; \
- numbits = 7-j; \
- goto enditer##j; \
- stuff##j: \
- numbits--; \
- bitbuf = (bitbuf & ((~0xff) << j)) | ((bitbuf & ~((~0xff) << j)) << 1); \
- goto enditer##j; \
-})
-
static int receive(struct net_device *dev, int cnt)
{
struct baycom_state *bc = netdev_priv(dev);
unsigned char tmp[128];
unsigned char *cp;
int cnt2, ret = 0;
+ int j;
numbits = bc->hdlcrx.numbits;
state = bc->hdlcrx.state;
bitbuf |= (*cp) << 8;
numbits += 8;
notbitstream = ~bitstream;
- DECODEITERA(0);
- DECODEITERA(1);
- DECODEITERA(2);
- DECODEITERA(3);
- DECODEITERA(4);
- DECODEITERA(5);
- DECODEITERA(6);
- DECODEITERA(7);
- goto enddec;
- DECODEITERB(0);
- DECODEITERB(1);
- DECODEITERB(2);
- DECODEITERB(3);
- DECODEITERB(4);
- DECODEITERB(5);
- DECODEITERB(6);
- DECODEITERB(7);
- enddec:
+ for (j = 0; j < 8; j++) {
+
+ /* flag or abort */
+ if (unlikely(!(notbitstream & (0x0fc << j)))) {
+
+ /* abort received */
+ if (!(notbitstream & (0x1fc << j)))
+ state = 0;
+
+ /* not flag received */
+ else if (!(bitstream & (0x1fe << j)) != (0x0fc << j)) {
+ if (state)
+ do_rxpacket(dev);
+ bc->hdlcrx.bufcnt = 0;
+ bc->hdlcrx.bufptr = bc->hdlcrx.buf;
+ state = 1;
+ numbits = 7-j;
+ }
+ }
+
+ /* stuffed bit */
+ else if (unlikely((bitstream & (0x1f8 << j)) == (0xf8 << j))) {
+ numbits--;
+ bitbuf = (bitbuf & ((~0xff) << j)) | ((bitbuf & ~((~0xff) << j)) << 1);
+ }
+ }
while (state && numbits >= 8) {
if (bc->hdlcrx.bufcnt >= TXBUFFER_SIZE) {
state = 0;
spin_lock_irqsave(&lp->window_lock, flags);
update_stats(dev);
spin_unlock_irqrestore(&lp->window_lock, flags);
+
+ /* force interrupts off */
+ outw(SetIntrEnb | 0x0000, ioaddr + EL3_CMD);
}
link->open--;
RTL_W8(ChipCmd, CmdTxEnb | CmdRxEnb);
RTL_W8(EarlyTxThres, EarlyTxThld);
- /* For gigabit rtl8169, MTU + header + CRC + VLAN */
- RTL_W16(RxMaxSize, tp->rx_buf_sz);
+ /* Low hurts. Let's disable the filtering. */
+ RTL_W16(RxMaxSize, 16383);
/* Set Rx Config register */
i = rtl8169_rx_config |
}
}
+static inline int rtl8169_fragmented_frame(u32 status)
+{
+ return (status & (FirstFrag | LastFrag)) != (FirstFrag | LastFrag);
+}
+
static inline void rtl8169_rx_csum(struct sk_buff *skb, struct RxDesc *desc)
{
u32 opts1 = le32_to_cpu(desc->opts1);
while (rx_left > 0) {
unsigned int entry = cur_rx % NUM_RX_DESC;
+ struct RxDesc *desc = tp->RxDescArray + entry;
u32 status;
rmb();
- status = le32_to_cpu(tp->RxDescArray[entry].opts1);
+ status = le32_to_cpu(desc->opts1);
if (status & DescOwn)
break;
if (status & RxRES) {
- printk(KERN_INFO "%s: Rx ERROR!!!\n", dev->name);
+ printk(KERN_INFO "%s: Rx ERROR. status = %08x\n",
+ dev->name, status);
tp->stats.rx_errors++;
if (status & (RxRWT | RxRUNT))
tp->stats.rx_length_errors++;
if (status & RxCRC)
tp->stats.rx_crc_errors++;
+ rtl8169_mark_to_asic(desc, tp->rx_buf_sz);
} else {
- struct RxDesc *desc = tp->RxDescArray + entry;
struct sk_buff *skb = tp->Rx_skbuff[entry];
int pkt_size = (status & 0x00001FFF) - 4;
void (*pci_action)(struct pci_dev *, dma_addr_t,
size_t, int) = pci_dma_sync_single_for_device;
+ /*
+ * The driver does not support incoming fragmented
+ * frames. They are seen as a symptom of over-mtu
+ * sized frames.
+ */
+ if (unlikely(rtl8169_fragmented_frame(status))) {
+ tp->stats.rx_dropped++;
+ tp->stats.rx_length_errors++;
+ rtl8169_mark_to_asic(desc, tp->rx_buf_sz);
+ goto move_on;
+ }
+
rtl8169_rx_csum(skb, desc);
pci_dma_sync_single_for_cpu(tp->pci_dev,
tp->stats.rx_bytes += pkt_size;
tp->stats.rx_packets++;
}
-
+move_on:
cur_rx++;
rx_left--;
}
#define SHAPER_BANNER "CymruNet Traffic Shaper BETA 0.04 for Linux 2.1\n"
-/*
- * Locking
- */
-
-static int shaper_lock(struct shaper *sh)
-{
- /*
- * Lock in an interrupt must fail
- */
- while (test_and_set_bit(0, &sh->locked))
- {
- if (!in_interrupt())
- sleep_on(&sh->wait_queue);
- else
- return 0;
-
- }
- return 1;
-}
-
static void shaper_kick(struct shaper *sh);
-static void shaper_unlock(struct shaper *sh)
-{
- clear_bit(0, &sh->locked);
- wake_up(&sh->wait_queue);
- shaper_kick(sh);
-}
-
/*
* Compute clocks on a buffer
*/
* Throw a frame at a shaper.
*/
-static int shaper_qframe(struct shaper *shaper, struct sk_buff *skb)
+
+static int shaper_start_xmit(struct sk_buff *skb, struct net_device *dev)
{
+ struct shaper *shaper = dev->priv;
struct sk_buff *ptr;
- /*
- * Get ready to work on this shaper. Lock may fail if its
- * an interrupt and locked.
- */
-
- if(!shaper_lock(shaper))
- return -1;
+ if (down_trylock(&shaper->sem))
+ return -1;
+
ptr=shaper->sendq.prev;
/*
dev_kfree_skb(ptr);
shaper->stats.collisions++;
}
- shaper_unlock(shaper);
+ shaper_kick(shaper);
+ up(&shaper->sem);
return 0;
}
static void shaper_timer(unsigned long data)
{
- struct shaper *sh=(struct shaper *)data;
- shaper_kick(sh);
+ struct shaper *shaper = (struct shaper *)data;
+
+ if (!down_trylock(&shaper->sem)) {
+ shaper_kick(shaper);
+ up(&shaper->sem);
+ } else
+ mod_timer(&shaper->timer, jiffies);
}
/*
{
struct sk_buff *skb;
- /*
- * Shaper unlock will kick
- */
-
- if (test_and_set_bit(0, &shaper->locked))
- {
- if(sh_debug)
- printk("Shaper locked.\n");
- mod_timer(&shaper->timer, jiffies);
- return;
- }
-
-
/*
* Walk the list (may be empty)
*/
if(skb!=NULL)
mod_timer(&shaper->timer, SHAPERCB(skb)->shapeclock);
-
- clear_bit(0, &shaper->locked);
}
static void shaper_flush(struct shaper *shaper)
{
struct sk_buff *skb;
- if(!shaper_lock(shaper))
- {
- printk(KERN_ERR "shaper: shaper_flush() called by an irq!\n");
- return;
- }
+
+ down(&shaper->sem);
while((skb=skb_dequeue(&shaper->sendq))!=NULL)
dev_kfree_skb(skb);
- shaper_unlock(shaper);
+ shaper_kick(shaper);
+ up(&shaper->sem);
}
/*
* ARP and other resolutions and not before.
*/
-
-static int shaper_start_xmit(struct sk_buff *skb, struct net_device *dev)
-{
- struct shaper *sh=dev->priv;
- return shaper_qframe(sh, skb);
-}
-
static struct net_device_stats *shaper_get_stats(struct net_device *dev)
{
struct shaper *sh=dev->priv;
init_timer(&sh->timer);
sh->timer.function=shaper_timer;
sh->timer.data=(unsigned long)sh;
- init_waitqueue_head(&sh->wait_queue);
}
/*
* Copyright (C) 2005 Broadcom Corporation.
*
* Firmware is:
- * Copyright (C) 2000-2003 Broadcom Corporation.
+ * Derived from proprietary unpublished source code,
+ * Copyright (C) 2000-2003 Broadcom Corporation.
+ *
+ * Permission is hereby granted for the distribution of this firmware
+ * data in hexadecimal or equivalent format, provided this copyright
+ * notice is accompanying it.
*/
#include <linux/config.h>
#define DRV_MODULE_NAME "tg3"
#define PFX DRV_MODULE_NAME ": "
-#define DRV_MODULE_VERSION "3.29"
-#define DRV_MODULE_RELDATE "May 23, 2005"
+#define DRV_MODULE_VERSION "3.30"
+#define DRV_MODULE_RELDATE "June 6, 2005"
#define TG3_DEF_MAC_MODE 0
#define TG3_DEF_RX_MODE 0
case NIC_SRAM_DATA_CFG_LED_MODE_MAC:
tp->led_ctrl = LED_CTRL_MODE_MAC;
+
+ /* Default to PHY_1_MODE if 0 (MAC_MODE) is
+ * read on some older 5700/5701 bootcode.
+ */
+ if (GET_ASIC_REV(tp->pci_chip_rev_id) ==
+ ASIC_REV_5700 ||
+ GET_ASIC_REV(tp->pci_chip_rev_id) ==
+ ASIC_REV_5701)
+ tp->led_ctrl = LED_CTRL_MODE_PHY_1;
+
break;
case SHASTA_EXT_LED_SHARED:
080f Sentry5 DDR/SDR RAM Controller
0811 Sentry5 External Interface Core
0816 BCM3302 Sentry5 MIPS32 CPU
+ 1600 NetXtreme BCM5752 Gigabit Ethernet PCI Express
1644 NetXtreme BCM5700 Gigabit Ethernet
1014 0277 Broadcom Vigil B5700 1000Base-T
1028 00d1 Broadcom BCM5700
#endif /* CONFIG_X86_IO_APIC */
-/*
- * Via 686A/B: The PCI_INTERRUPT_LINE register for the on-chip
- * devices, USB0/1, AC97, MC97, and ACPI, has an unusual feature:
- * when written, it makes an internal connection to the PIC.
- * For these devices, this register is defined to be 4 bits wide.
- * Normally this is fine. However for IO-APIC motherboards, or
- * non-x86 architectures (yes Via exists on PPC among other places),
- * we must mask the PCI_INTERRUPT_LINE value versus 0xf to get
- * interrupts delivered properly.
- */
-
/*
* FIXME: it is questionable that quirk_via_acpi
* is needed. It shows up as an ISA bridge, and does not
DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C586_3, quirk_via_acpi );
DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686_4, quirk_via_acpi );
-static void quirk_via_irqpic(struct pci_dev *dev)
+/*
+ * Via 686A/B: The PCI_INTERRUPT_LINE register for the on-chip
+ * devices, USB0/1, AC97, MC97, and ACPI, has an unusual feature:
+ * when written, it makes an internal connection to the PIC.
+ * For these devices, this register is defined to be 4 bits wide.
+ * Normally this is fine. However for IO-APIC motherboards, or
+ * non-x86 architectures (yes Via exists on PPC among other places),
+ * we must mask the PCI_INTERRUPT_LINE value versus 0xf to get
+ * interrupts delivered properly.
+ */
+static void quirk_via_irq(struct pci_dev *dev)
{
u8 irq, new_irq;
-#ifdef CONFIG_X86_IO_APIC
- if (nr_ioapics && !skip_ioapic_setup)
- return;
-#endif
-#ifdef CONFIG_ACPI
- if (acpi_irq_model != ACPI_IRQ_MODEL_PIC)
- return;
-#endif
new_irq = dev->irq & 0xf;
pci_read_config_byte(dev, PCI_INTERRUPT_LINE, &irq);
if (new_irq != irq) {
- printk(KERN_INFO "PCI: Via PIC IRQ fixup for %s, from %d to %d\n",
+ printk(KERN_INFO "PCI: Via IRQ fixup for %s, from %d to %d\n",
pci_name(dev), irq, new_irq);
udelay(15); /* unknown if delay really needed */
pci_write_config_byte(dev, PCI_INTERRUPT_LINE, new_irq);
}
}
-DECLARE_PCI_FIXUP_ENABLE(PCI_VENDOR_ID_VIA, PCI_ANY_ID, quirk_via_irqpic);
+DECLARE_PCI_FIXUP_ENABLE(PCI_VENDOR_ID_VIA, PCI_ANY_ID, quirk_via_irq);
/*
* PIIX3 USB: We have to disable USB interrupts that are
return ata_pci_init_one(pdev, port_info, n_ports);
}
-/**
- * piix_init -
- *
- * LOCKING:
- *
- * RETURNS:
- *
- */
-
static int __init piix_init(void)
{
int rc;
return 0;
}
-/**
- * piix_exit -
- *
- * LOCKING:
- *
- */
-
static void __exit piix_exit(void)
{
pci_unregister_driver(&piix_pci_driver);
ata_wait_idle(ap);
}
+
+/**
+ * ata_tf_load - send taskfile registers to host controller
+ * @ap: Port to which output is sent
+ * @tf: ATA taskfile register set
+ *
+ * Outputs ATA taskfile to standard ATA host controller using MMIO
+ * or PIO as indicated by the ATA_FLAG_MMIO flag.
+ * Writes the control, feature, nsect, lbal, lbam, and lbah registers.
+ * Optionally (ATA_TFLAG_LBA48) writes hob_feature, hob_nsect,
+ * hob_lbal, hob_lbam, and hob_lbah.
+ *
+ * This function waits for idle (!BUSY and !DRQ) after writing
+ * registers. If the control register has a new value, this
+ * function also waits for idle after writing control and before
+ * writing the remaining registers.
+ *
+ * May be used as the tf_load() entry in ata_port_operations.
+ *
+ * LOCKING:
+ * Inherited from caller.
+ */
void ata_tf_load(struct ata_port *ap, struct ata_taskfile *tf)
{
if (ap->flags & ATA_FLAG_MMIO)
}
/**
- * ata_exec_command - issue ATA command to host controller
+ * ata_exec_command_pio - issue ATA command to host controller
* @ap: port to which command is being issued
* @tf: ATA taskfile register set
*
- * Issues PIO/MMIO write to ATA command register, with proper
+ * Issues PIO write to ATA command register, with proper
* synchronization with interrupt handler / other threads.
*
* LOCKING:
ata_pause(ap);
}
+
+/**
+ * ata_exec_command - issue ATA command to host controller
+ * @ap: port to which command is being issued
+ * @tf: ATA taskfile register set
+ *
+ * Issues PIO/MMIO write to ATA command register, with proper
+ * synchronization with interrupt handler / other threads.
+ *
+ * LOCKING:
+ * spin_lock_irqsave(host_set lock)
+ */
void ata_exec_command(struct ata_port *ap, struct ata_taskfile *tf)
{
if (ap->flags & ATA_FLAG_MMIO)
}
/**
- * ata_tf_read - input device's ATA taskfile shadow registers
+ * ata_tf_read_pio - input device's ATA taskfile shadow registers
* @ap: Port from which input is read
* @tf: ATA taskfile register set for storing input
*
}
}
+
+/**
+ * ata_tf_read - input device's ATA taskfile shadow registers
+ * @ap: Port from which input is read
+ * @tf: ATA taskfile register set for storing input
+ *
+ * Reads ATA taskfile registers for currently-selected device
+ * into @tf.
+ *
+ * Reads nsect, lbal, lbam, lbah, and device. If ATA_TFLAG_LBA48
+ * is set, also reads the hob registers.
+ *
+ * May be used as the tf_read() entry in ata_port_operations.
+ *
+ * LOCKING:
+ * Inherited from caller.
+ */
void ata_tf_read(struct ata_port *ap, struct ata_taskfile *tf)
{
if (ap->flags & ATA_FLAG_MMIO)
* @ap: port where the device is
*
* Reads ATA taskfile status register for currently-selected device
- * and return it's value. This also clears pending interrupts
+ * and return its value. This also clears pending interrupts
* from this device
*
* LOCKING:
* @ap: port where the device is
*
* Reads ATA taskfile status register for currently-selected device
- * via MMIO and return it's value. This also clears pending interrupts
+ * via MMIO and return its value. This also clears pending interrupts
* from this device
*
* LOCKING:
return readb((void __iomem *) ap->ioaddr.status_addr);
}
+
+/**
+ * ata_check_status - Read device status reg & clear interrupt
+ * @ap: port where the device is
+ *
+ * Reads ATA taskfile status register for currently-selected device
+ * and return its value. This also clears pending interrupts
+ * from this device
+ *
+ * May be used as the check_status() entry in ata_port_operations.
+ *
+ * LOCKING:
+ * Inherited from caller.
+ */
u8 ata_check_status(struct ata_port *ap)
{
if (ap->flags & ATA_FLAG_MMIO)
return ata_check_status_pio(ap);
}
+
+/**
+ * ata_altstatus - Read device alternate status reg
+ * @ap: port where the device is
+ *
+ * Reads ATA taskfile alternate status register for
+ * currently-selected device and return its value.
+ *
+ * Note: may NOT be used as the check_altstatus() entry in
+ * ata_port_operations.
+ *
+ * LOCKING:
+ * Inherited from caller.
+ */
u8 ata_altstatus(struct ata_port *ap)
{
if (ap->ops->check_altstatus)
return inb(ap->ioaddr.altstatus_addr);
}
+
+/**
+ * ata_chk_err - Read device error reg
+ * @ap: port where the device is
+ *
+ * Reads ATA taskfile error register for
+ * currently-selected device and return its value.
+ *
+ * Note: may NOT be used as the check_err() entry in
+ * ata_port_operations.
+ *
+ * LOCKING:
+ * Inherited from caller.
+ */
u8 ata_chk_err(struct ata_port *ap)
{
if (ap->ops->check_err)
}
}
+
+/**
+ * ata_noop_dev_select - Select device 0/1 on ATA bus
+ * @ap: ATA channel to manipulate
+ * @device: ATA device (numbered from zero) to select
+ *
+ * This function performs no actual function.
+ *
+ * May be used as the dev_select() entry in ata_port_operations.
+ *
+ * LOCKING:
+ * caller.
+ */
void ata_noop_dev_select (struct ata_port *ap, unsigned int device)
{
}
+
/**
* ata_std_dev_select - Select device 0/1 on ATA bus
* @ap: ATA channel to manipulate
*
* Use the method defined in the ATA specification to
* make either device 0, or device 1, active on the
- * ATA channel.
+ * ATA channel. Works with both PIO and MMIO.
+ *
+ * May be used as the dev_select() entry in ata_port_operations.
*
* LOCKING:
* caller.
* ata_bus_probe - Reset and probe ATA bus
* @ap: Bus to probe
*
+ * Master ATA bus probing function. Initiates a hardware-dependent
+ * bus reset, then attempts to identify any devices found on
+ * the bus.
+ *
* LOCKING:
+ * PCI/etc. bus probe sem.
*
* RETURNS:
* Zero on success, non-zero on error.
}
/**
- * ata_port_probe -
- * @ap:
+ * ata_port_probe - Mark port as enabled
+ * @ap: Port for which we indicate enablement
*
- * LOCKING:
+ * Modify @ap data structure such that the system
+ * thinks that the entire port is enabled.
+ *
+ * LOCKING: host_set lock, or some other form of
+ * serialization.
*/
void ata_port_probe(struct ata_port *ap)
}
/**
- * __sata_phy_reset -
- * @ap:
+ * __sata_phy_reset - Wake/reset a low-level SATA PHY
+ * @ap: SATA port associated with target SATA PHY.
+ *
+ * This function issues commands to standard SATA Sxxx
+ * PHY registers, to wake up the phy (and device), and
+ * clear any reset condition.
*
* LOCKING:
+ * PCI/etc. bus probe sem.
*
*/
void __sata_phy_reset(struct ata_port *ap)
}
/**
- * __sata_phy_reset -
- * @ap:
+ * sata_phy_reset - Reset SATA bus.
+ * @ap: SATA port associated with target SATA PHY.
+ *
+ * This function resets the SATA bus, and then probes
+ * the bus for devices.
*
* LOCKING:
+ * PCI/etc. bus probe sem.
*
*/
void sata_phy_reset(struct ata_port *ap)
}
/**
- * ata_port_disable -
- * @ap:
+ * ata_port_disable - Disable port.
+ * @ap: Port to be disabled.
*
- * LOCKING:
+ * Modify @ap data structure such that the system
+ * thinks that the entire port is disabled, and should
+ * never attempt to probe or communicate with devices
+ * on this port.
+ *
+ * LOCKING: host_set lock, or some other form of
+ * serialization.
*/
void ata_port_disable(struct ata_port *ap)
* ata_set_mode - Program timings and issue SET FEATURES - XFER
* @ap: port on which timings will be programmed
*
+ * Set ATA device disk transfer mode (PIO3, UDMA6, etc.).
+ *
* LOCKING:
+ * PCI/etc. bus probe sem.
*
*/
static void ata_set_mode(struct ata_port *ap)
* @tmout_pat: impatience timeout
* @tmout: overall timeout
*
- * LOCKING:
+ * Sleep until ATA Status register bit BSY clears,
+ * or a timeout occurs.
+ *
+ * LOCKING: None.
*
*/
}
/**
- * ata_bus_edd -
- * @ap:
+ * ata_bus_edd - Issue EXECUTE DEVICE DIAGNOSTIC command.
+ * @ap: Port to reset and probe
+ *
+ * Use the EXECUTE DEVICE DIAGNOSTIC command to reset and
+ * probe the bus. Not often used these days.
*
* LOCKING:
+ * PCI/etc. bus probe sem.
*
*/
* the device is ATA or ATAPI.
*
* LOCKING:
- * Inherited from caller. Some functions called by this function
- * obtain the host_set lock.
+ * PCI/etc. bus probe sem.
+ * Obtains host_set lock.
*
* SIDE EFFECTS:
* Sets ATA_FLAG_PORT_DISABLED if bus reset fails.
* @xfer_mode_out: (output) SET FEATURES - XFER MODE code
* @xfer_shift_out: (output) bit shift that selects this mode
*
+ * Based on host and device capabilities, determine the
+ * maximum transfer mode that is amenable to all.
+ *
* LOCKING:
+ * PCI/etc. bus probe sem.
*
* RETURNS:
* Zero on success, negative on error.
* @ap: Port associated with device @dev
* @dev: Device to which command will be sent
*
+ * Issue SET FEATURES - XFER MODE command to device @dev
+ * on port @ap.
+ *
* LOCKING:
+ * PCI/etc. bus probe sem.
*/
static void ata_dev_set_xfermode(struct ata_port *ap, struct ata_device *dev)
}
/**
- * ata_sg_clean -
- * @qc:
+ * ata_sg_clean - Unmap DMA memory associated with command
+ * @qc: Command containing DMA memory to be released
+ *
+ * Unmap all mapped DMA memory associated with this command.
*
* LOCKING:
+ * spin_lock_irqsave(host_set lock)
*/
static void ata_sg_clean(struct ata_queued_cmd *qc)
* ata_fill_sg - Fill PCI IDE PRD table
* @qc: Metadata associated with taskfile to be transferred
*
+ * Fill PCI IDE PRD (scatter-gather) table with segments
+ * associated with the current disk command.
+ *
* LOCKING:
+ * spin_lock_irqsave(host_set lock)
*
*/
static void ata_fill_sg(struct ata_queued_cmd *qc)
* ata_check_atapi_dma - Check whether ATAPI DMA can be supported
* @qc: Metadata associated with taskfile to check
*
+ * Allow low-level driver to filter ATA PACKET commands, returning
+ * a status indicating whether or not it is OK to use DMA for the
+ * supplied PACKET command.
+ *
* LOCKING:
+ * spin_lock_irqsave(host_set lock)
+ *
* RETURNS: 0 when ATAPI DMA can be used
* nonzero otherwise
*/
* ata_qc_prep - Prepare taskfile for submission
* @qc: Metadata associated with taskfile to be prepared
*
+ * Prepare ATA taskfile for submission.
+ *
* LOCKING:
* spin_lock_irqsave(host_set lock)
*/
ata_fill_sg(qc);
}
+/**
+ * ata_sg_init_one - Associate command with memory buffer
+ * @qc: Command to be associated
+ * @buf: Memory buffer
+ * @buflen: Length of memory buffer, in bytes.
+ *
+ * Initialize the data-related elements of queued_cmd @qc
+ * to point to a single memory buffer, @buf of byte length @buflen.
+ *
+ * LOCKING:
+ * spin_lock_irqsave(host_set lock)
+ */
+
+
+
+/**
+ * ata_sg_init_one - Prepare a one-entry scatter-gather list.
+ * @qc: Queued command
+ * @buf: transfer buffer
+ * @buflen: length of buf
+ *
+ * Builds a single-entry scatter-gather list to initiate a
+ * transfer utilizing the specified buffer.
+ *
+ * LOCKING:
+ */
void ata_sg_init_one(struct ata_queued_cmd *qc, void *buf, unsigned int buflen)
{
struct scatterlist *sg;
sg->length = buflen;
}
+/**
+ * ata_sg_init - Associate command with scatter-gather table.
+ * @qc: Command to be associated
+ * @sg: Scatter-gather table.
+ * @n_elem: Number of elements in s/g table.
+ *
+ * Initialize the data-related elements of queued_cmd @qc
+ * to point to a scatter-gather table @sg, containing @n_elem
+ * elements.
+ *
+ * LOCKING:
+ * spin_lock_irqsave(host_set lock)
+ */
+
+
+/**
+ * ata_sg_init - Assign a scatter gather list to a queued command
+ * @qc: Queued command
+ * @sg: Scatter-gather list
+ * @n_elem: length of sg list
+ *
+ * Attaches a scatter-gather list to a queued command.
+ *
+ * LOCKING:
+ */
+
void ata_sg_init(struct ata_queued_cmd *qc, struct scatterlist *sg,
unsigned int n_elem)
{
}
/**
- * ata_sg_setup_one -
- * @qc:
+ * ata_sg_setup_one - DMA-map the memory buffer associated with a command.
+ * @qc: Command with memory buffer to be mapped.
+ *
+ * DMA-map the memory buffer associated with queued_cmd @qc.
*
* LOCKING:
* spin_lock_irqsave(host_set lock)
*
* RETURNS:
- *
+ * Zero on success, negative on error.
*/
static int ata_sg_setup_one(struct ata_queued_cmd *qc)
}
/**
- * ata_sg_setup -
- * @qc:
+ * ata_sg_setup - DMA-map the scatter-gather table associated with a command.
+ * @qc: Command with scatter-gather table to be mapped.
+ *
+ * DMA-map the scatter-gather table associated with queued_cmd @qc.
*
* LOCKING:
* spin_lock_irqsave(host_set lock)
*
* RETURNS:
+ * Zero on success, negative on error.
*
*/
* @ap:
*
* LOCKING:
+ * None. (executing in kernel thread context)
*
* RETURNS:
*
* @ap:
*
* LOCKING:
+ * None. (executing in kernel thread context)
*/
static void ata_pio_complete (struct ata_port *ap)
ata_qc_complete(qc, drv_stat);
}
+
+/**
+ * swap_buf_le16 -
+ * @buf: Buffer to swap
+ * @buf_words: Number of 16-bit words in buffer.
+ *
+ * Swap halves of 16-bit words if needed to convert from
+ * little-endian byte order to native cpu byte order, or
+ * vice-versa.
+ *
+ * LOCKING:
+ */
void swap_buf_le16(u16 *buf, unsigned int buf_words)
{
#ifdef __BIG_ENDIAN
* @ap:
*
* LOCKING:
+ * None. (executing in kernel thread context)
*/
static void ata_pio_block(struct ata_port *ap)
* transaction completed successfully.
*
* LOCKING:
+ * Inherited from SCSI layer (none, can sleep)
*/
static void ata_qc_timeout(struct ata_queued_cmd *qc)
* @dev: Device from whom we request an available command structure
*
* LOCKING:
+ * None.
*/
static struct ata_queued_cmd *ata_qc_new(struct ata_port *ap)
* @dev: Device from whom we request an available command structure
*
* LOCKING:
+ * None.
*/
struct ata_queued_cmd *ata_qc_new_init(struct ata_port *ap,
* in case something prevents using it.
*
* LOCKING:
+ * spin_lock_irqsave(host_set lock)
*
*/
void ata_qc_free(struct ata_queued_cmd *qc)
/**
* ata_qc_complete - Complete an active ATA command
* @qc: Command to complete
- * @drv_stat: ATA status register contents
+ * @drv_stat: ATA Status register contents
+ *
+ * Indicate to the mid and upper layers that an ATA
+ * command has completed, with either an ok or not-ok status.
*
* LOCKING:
+ * spin_lock_irqsave(host_set lock)
*
*/
return -1;
}
+
/**
* ata_qc_issue_prot - issue taskfile to device in proto-dependent manner
* @qc: command to issue to device
* classes called "protocols", and issuing each type of protocol
* is slightly different.
*
+ * May be used as the qc_issue() entry in ata_port_operations.
+ *
* LOCKING:
* spin_lock_irqsave(host_set lock)
*
}
/**
- * ata_bmdma_setup - Set up PCI IDE BMDMA transaction
+ * ata_bmdma_setup_mmio - Set up PCI IDE BMDMA transaction
* @qc: Info associated with this ATA transaction.
*
* LOCKING:
ap->ioaddr.bmdma_addr + ATA_DMA_CMD);
}
+
+/**
+ * ata_bmdma_start - Start a PCI IDE BMDMA transaction
+ * @qc: Info associated with this ATA transaction.
+ *
+ * Writes the ATA_DMA_START flag to the DMA command register.
+ *
+ * May be used as the bmdma_start() entry in ata_port_operations.
+ *
+ * LOCKING:
+ * spin_lock_irqsave(host_set lock)
+ */
void ata_bmdma_start(struct ata_queued_cmd *qc)
{
if (qc->ap->flags & ATA_FLAG_MMIO)
ata_bmdma_start_pio(qc);
}
+
+/**
+ * ata_bmdma_setup - Set up PCI IDE BMDMA transaction
+ * @qc: Info associated with this ATA transaction.
+ *
+ * Writes address of PRD table to device's PRD Table Address
+ * register, sets the DMA control register, and calls
+ * ops->exec_command() to start the transfer.
+ *
+ * May be used as the bmdma_setup() entry in ata_port_operations.
+ *
+ * LOCKING:
+ * spin_lock_irqsave(host_set lock)
+ */
void ata_bmdma_setup(struct ata_queued_cmd *qc)
{
if (qc->ap->flags & ATA_FLAG_MMIO)
ata_bmdma_setup_pio(qc);
}
+
+/**
+ * ata_bmdma_irq_clear - Clear PCI IDE BMDMA interrupt.
+ * @ap: Port associated with this ATA transaction.
+ *
+ * Clear interrupt and error flags in DMA status register.
+ *
+ * May be used as the irq_clear() entry in ata_port_operations.
+ *
+ * LOCKING:
+ * spin_lock_irqsave(host_set lock)
+ */
+
void ata_bmdma_irq_clear(struct ata_port *ap)
{
if (ap->flags & ATA_FLAG_MMIO) {
}
+
+/**
+ * ata_bmdma_status - Read PCI IDE BMDMA status
+ * @ap: Port associated with this ATA transaction.
+ *
+ * Read and return BMDMA status register.
+ *
+ * May be used as the bmdma_status() entry in ata_port_operations.
+ *
+ * LOCKING:
+ * spin_lock_irqsave(host_set lock)
+ */
+
u8 ata_bmdma_status(struct ata_port *ap)
{
u8 host_stat;
return host_stat;
}
+
+/**
+ * ata_bmdma_stop - Stop PCI IDE BMDMA transfer
+ * @ap: Port associated with this ATA transaction.
+ *
+ * Clears the ATA_DMA_START flag in the dma control register
+ *
+ * May be used as the bmdma_stop() entry in ata_port_operations.
+ *
+ * LOCKING:
+ * spin_lock_irqsave(host_set lock)
+ */
+
void ata_bmdma_stop(struct ata_port *ap)
{
if (ap->flags & ATA_FLAG_MMIO) {
/**
* ata_interrupt - Default ATA host interrupt handler
- * @irq: irq line
- * @dev_instance: pointer to our host information structure
+ * @irq: irq line (unused)
+ * @dev_instance: pointer to our ata_host_set information structure
* @regs: unused
*
+ * Default interrupt handler for PCI IDE devices. Calls
+ * ata_host_intr() for each port that is not disabled.
+ *
* LOCKING:
+ * Obtains host_set lock during operation.
*
* RETURNS:
+ * IRQ_NONE or IRQ_HANDLED.
*
*/
ata_qc_complete(qc, ATA_ERR);
}
+
+/**
+ * ata_port_start - Set port up for dma.
+ * @ap: Port to initialize
+ *
+ * Called just after data structures for each port are
+ * initialized. Allocates space for PRD table.
+ *
+ * May be used as the port_start() entry in ata_port_operations.
+ *
+ * LOCKING:
+ */
+
int ata_port_start (struct ata_port *ap)
{
struct device *dev = ap->host_set->dev;
return 0;
}
+
+/**
+ * ata_port_stop - Undo ata_port_start()
+ * @ap: Port to shut down
+ *
+ * Frees the PRD table.
+ *
+ * May be used as the port_stop() entry in ata_port_operations.
+ *
+ * LOCKING:
+ */
+
void ata_port_stop (struct ata_port *ap)
{
struct device *dev = ap->host_set->dev;
* @ent: Probe information provided by low-level driver
* @port_no: Port number associated with this ata_port
*
+ * Initialize a new ata_port structure, and its associated
+ * scsi_host.
+ *
* LOCKING:
+ * Inherited from caller.
*
*/
* @host_set: Collections of ports to which we add
* @port_no: Port number associated with this host
*
+ * Attach low-level ATA driver to system.
+ *
* LOCKING:
+ * PCI/etc. bus probe sem.
*
* RETURNS:
+ * New ata_port on success, for NULL on error.
*
*/
}
/**
- * ata_device_add -
- * @ent:
+ * ata_device_add - Register hardware device with ATA and SCSI layers
+ * @ent: Probe information describing hardware device to be registered
+ *
+ * This function processes the information provided in the probe
+ * information struct @ent, allocates the necessary ATA and SCSI
+ * host information structures, initializes them, and registers
+ * everything with requisite kernel subsystems.
+ *
+ * This function requests irqs, probes the ATA bus, and probes
+ * the SCSI bus.
*
* LOCKING:
+ * PCI/etc. bus probe sem.
*
* RETURNS:
+ * Number of ports registered. Zero on error (no ports registered).
*
*/
/**
* ata_std_ports - initialize ioaddr with standard port offsets.
* @ioaddr: IO address structure to be initialized
+ *
+ * Utility function which initializes data_addr, error_addr,
+ * feature_addr, nsect_addr, lbal_addr, lbam_addr, lbah_addr,
+ * device_addr, status_addr, and command_addr to standard offsets
+ * relative to cmd_addr.
+ *
+ * Does not set ctl_addr, altstatus_addr, bmdma_addr, or scr_addr.
*/
+
void ata_std_ports(struct ata_ioports *ioaddr)
{
ioaddr->data_addr = ioaddr->cmd_addr + ATA_REG_DATA;
return probe_ent;
}
+
+
+/**
+ * ata_pci_init_native_mode - Initialize native-mode driver
+ * @pdev: pci device to be initialized
+ * @port: array[2] of pointers to port info structures.
+ *
+ * Utility function which allocates and initializes an
+ * ata_probe_ent structure for a standard dual-port
+ * PIO-based IDE controller. The returned ata_probe_ent
+ * structure can be passed to ata_device_add(). The returned
+ * ata_probe_ent structure should then be freed with kfree().
+ */
+
#ifdef CONFIG_PCI
struct ata_probe_ent *
ata_pci_init_native_mode(struct pci_dev *pdev, struct ata_port_info **port)
* @port_info: Information from low-level host driver
* @n_ports: Number of ports attached to host controller
*
+ * This is a helper function which can be called from a driver's
+ * xxx_init_one() probe function if the hardware uses traditional
+ * IDE taskfile registers.
+ *
+ * This function calls pci_enable_device(), reserves its register
+ * regions, sets the dma mask, enables bus master mode, and calls
+ * ata_device_add()
+ *
* LOCKING:
* Inherited from PCI layer (may sleep).
*
* RETURNS:
+ * Zero on success, negative on errno-based value on error.
*
*/
#endif /* CONFIG_PCI */
-/**
- * ata_init -
- *
- * LOCKING:
- *
- * RETURNS:
- *
- */
-
static int __init ata_init(void)
{
ata_wq = create_workqueue("ata");
}
/**
- * ata_scsiop_noop -
+ * ata_scsiop_noop - Command handler that simply returns success.
* @args: device IDENTIFY data / SCSI command of interest.
* @rbuf: Response buffer, to which simulated SCSI cmd output is sent.
* @buflen: Response buffer length.
int ret, i;
unsigned int id, lun;
unsigned long serial;
+ unsigned long flags;
if (!CMD_SP(cmd))
return FAILED;
/* Check active list for command command. */
spin_unlock_irq(ha->host->host_lock);
- spin_lock(&ha->hardware_lock);
+ spin_lock_irqsave(&ha->hardware_lock, flags);
for (i = 1; i < MAX_OUTSTANDING_COMMANDS; i++) {
sp = ha->outstanding_cmds[i];
sp->state));
DEBUG3(qla2x00_print_scsi_cmd(cmd);)
- spin_unlock(&ha->hardware_lock);
+ spin_unlock_irqrestore(&ha->hardware_lock, flags);
if (qla2x00_abort_command(ha, sp)) {
DEBUG2(printk("%s(%ld): abort_command "
"mbx failed.\n", __func__, ha->host_no));
"mbx success.\n", __func__, ha->host_no));
ret = SUCCESS;
}
- spin_lock(&ha->hardware_lock);
+ spin_lock_irqsave(&ha->hardware_lock, flags);
break;
}
+ spin_unlock_irqrestore(&ha->hardware_lock, flags);
/* Wait for the command to be returned. */
if (ret == SUCCESS) {
- spin_unlock(&ha->hardware_lock);
if (qla2x00_eh_wait_on_command(ha, cmd) != QLA_SUCCESS) {
qla_printk(KERN_ERR, ha,
"scsi(%ld:%d:%d): Abort handler timed out -- %lx "
"%x.\n", ha->host_no, id, lun, serial, ret);
}
- spin_lock(&ha->hardware_lock);
}
spin_lock_irq(ha->host->host_lock);
int status;
srb_t *sp;
struct scsi_cmnd *cmd;
+ unsigned long flags;
status = 0;
* array
*/
for (cnt = 1; cnt < MAX_OUTSTANDING_COMMANDS; cnt++) {
- spin_lock(&ha->hardware_lock);
+ spin_lock_irqsave(&ha->hardware_lock, flags);
sp = ha->outstanding_cmds[cnt];
if (sp) {
cmd = sp->cmd;
- spin_unlock(&ha->hardware_lock);
+ spin_unlock_irqrestore(&ha->hardware_lock, flags);
if (cmd->device->id == t) {
if (!qla2x00_eh_wait_on_command(ha, cmd)) {
status = 1;
}
}
} else {
- spin_unlock(&ha->hardware_lock);
+ spin_unlock_irqrestore(&ha->hardware_lock, flags);
}
}
return (status);
int status;
srb_t *sp;
struct scsi_cmnd *cmd;
+ unsigned long flags;
status = 1;
* array
*/
for (cnt = 1; cnt < MAX_OUTSTANDING_COMMANDS; cnt++) {
- spin_lock(&ha->hardware_lock);
+ spin_lock_irqsave(&ha->hardware_lock, flags);
sp = ha->outstanding_cmds[cnt];
if (sp) {
cmd = sp->cmd;
- spin_unlock(&ha->hardware_lock);
+ spin_unlock_irqrestore(&ha->hardware_lock, flags);
status = qla2x00_eh_wait_on_command(ha, cmd);
if (status == 0)
break;
}
else {
- spin_unlock(&ha->hardware_lock);
+ spin_unlock_irqrestore(&ha->hardware_lock, flags);
}
}
return (status);
if (!starget)
return ERR_PTR(-ENOMEM);
+ get_device(&starget->dev);
down(&shost->scan_mutex);
res = scsi_probe_and_add_lun(starget, lun, NULL, &sdev, 1, hostdata);
if (res != SCSI_SCAN_LUN_PRESENT)
return "DSIU";
}
- return "unknown";
+ return NULL;
}
static unsigned int siu_tx_empty(struct uart_port *port)
struct uart_port *port;
uint8_t iir, lsr;
- if (dev_id == NULL)
- return IRQ_NONE;
-
port = (struct uart_port *)dev_id;
iir = siu_read(port, UART_IIR);
{
int retval;
+ if (port->membase == NULL)
+ return -ENODEV;
+
siu_clear_fifo(port);
(void)siu_read(port, UART_LSR);
unsigned long flags;
uint8_t lcr;
- if (port->membase == NULL)
- return;
-
siu_write(port, UART_IER, 0);
spin_lock_irqsave(&port->lock, flags);
#ifdef CONFIG_SERIAL_VR41XX_CONSOLE
-static void early_set_termios(struct uart_port *port, struct termios *new,
- struct termios *old)
-{
- tcflag_t c_cflag;
- uint8_t lcr;
- unsigned int baud, quot;
-
- c_cflag = new->c_cflag;
- switch (c_cflag & CSIZE) {
- case CS5:
- lcr = UART_LCR_WLEN5;
- break;
- case CS6:
- lcr = UART_LCR_WLEN6;
- break;
- case CS7:
- lcr = UART_LCR_WLEN7;
- break;
- default:
- lcr = UART_LCR_WLEN8;
- break;
- }
-
- if (c_cflag & CSTOPB)
- lcr |= UART_LCR_STOP;
- if (c_cflag & PARENB)
- lcr |= UART_LCR_PARITY;
- if ((c_cflag & PARODD) != PARODD)
- lcr |= UART_LCR_EPAR;
- if (c_cflag & CMSPAR)
- lcr |= UART_LCR_SPAR;
-
- baud = uart_get_baud_rate(port, new, old, 0, port->uartclk/16);
- quot = uart_get_divisor(port, baud);
-
- siu_write(port, UART_LCR, lcr | UART_LCR_DLAB);
-
- siu_write(port, UART_DLL, (uint8_t)quot);
- siu_write(port, UART_DLM, (uint8_t)(quot >> 8));
-
- siu_write(port, UART_LCR, lcr);
-}
-
-static struct uart_ops early_uart_ops = {
- .set_termios = early_set_termios,
-};
-
#define BOTH_EMPTY (UART_LSR_TEMT | UART_LSR_THRE)
static void wait_for_xmitr(struct uart_port *port)
if (port->membase == NULL) {
if (port->mapbase == 0)
return -ENODEV;
- port->membase = (unsigned char __iomem *)KSEG1ADDR(port->mapbase);
+ port->membase = ioremap(port->mapbase, siu_port_size(port));
}
vr41xx_select_siu_interface(SIU_INTERFACE_RS232C);
for (i = 0; i < num; i++) {
port = &siu_uart_ports[i];
- port->ops = &early_uart_ops;
+ port->ops = &siu_uart_ops;
}
register_console(&siu_console);
port->dev = dev;
retval = uart_add_one_port(&siu_uart_driver, port);
- if (retval)
+ if (retval < 0) {
+ port->dev = NULL;
break;
+ }
}
if (i == 0 && retval < 0) {
{
struct usb_interface *intf;
struct usb_device *udev;
+ int len;
intf = to_usb_interface(dev);
udev = interface_to_usbdev(intf);
- if (udev->descriptor.bDeviceClass == 0) {
- struct usb_host_interface *alt = intf->cur_altsetting;
- return sprintf(buf, "usb:v%04Xp%04Xd%04Xdc%02Xdsc%02Xdp%02Xic%02Xisc%02Xip%02X\n",
+ len = sprintf(buf, "usb:v%04Xp%04Xd%04Xdc%02Xdsc%02Xdp%02Xic",
le16_to_cpu(udev->descriptor.idVendor),
le16_to_cpu(udev->descriptor.idProduct),
le16_to_cpu(udev->descriptor.bcdDevice),
udev->descriptor.bDeviceClass,
udev->descriptor.bDeviceSubClass,
- udev->descriptor.bDeviceProtocol,
+ udev->descriptor.bDeviceProtocol);
+ buf += len;
+
+ if (udev->descriptor.bDeviceClass == 0) {
+ struct usb_host_interface *alt = intf->cur_altsetting;
+
+ return len + sprintf(buf, "%02Xisc%02Xip%02X\n",
alt->desc.bInterfaceClass,
alt->desc.bInterfaceSubClass,
alt->desc.bInterfaceProtocol);
} else {
- return sprintf(buf, "usb:v%04Xp%04Xd%04Xdc%02Xdsc%02Xdp%02Xic*isc*ip*\n",
- le16_to_cpu(udev->descriptor.idVendor),
- le16_to_cpu(udev->descriptor.idProduct),
- le16_to_cpu(udev->descriptor.bcdDevice),
- udev->descriptor.bDeviceClass,
- udev->descriptor.bDeviceSubClass,
- udev->descriptor.bDeviceProtocol);
+ return len + sprintf(buf, "*isc*ip*\n");
}
-
}
static DEVICE_ATTR(modalias, S_IRUGO, show_modalias, NULL);
#define USB_DEVICE_ID_WACOM_INTUOS2 0x0040
#define USB_DEVICE_ID_WACOM_VOLITO 0x0060
#define USB_DEVICE_ID_WACOM_PTU 0x0003
+#define USB_DEVICE_ID_WACOM_INTUOS3 0x00B0
+#define USB_DEVICE_ID_WACOM_CINTIQ 0x003F
#define USB_VENDOR_ID_KBGEAR 0x084e
#define USB_DEVICE_ID_KBGEAR_JAMSTUDIO 0x1001
#define USB_VENDOR_ID_DELORME 0x1163
#define USB_DEVICE_ID_DELORME_EARTHMATE 0x0100
+#define USB_DEVICE_ID_DELORME_EM_LT20 0x0200
#define USB_VENDOR_ID_MCC 0x09db
#define USB_DEVICE_ID_MCC_PMD1024LS 0x0076
#define USB_VENDOR_ID_BTC 0x046e
#define USB_DEVICE_ID_BTC_KEYBOARD 0x5303
+#define USB_VENDOR_ID_VERNIER 0x08f7
+#define USB_DEVICE_ID_VERNIER_LABPRO 0x0001
+#define USB_DEVICE_ID_VERNIER_GOTEMP 0x0002
+#define USB_DEVICE_ID_VERNIER_SKIP 0x0003
+#define USB_DEVICE_ID_VERNIER_CYCLOPS 0x0004
+
/*
* Alphabetically sorted blacklist by quirk type.
{ USB_VENDOR_ID_CODEMERCS, USB_DEVICE_ID_CODEMERCS_IOW28, HID_QUIRK_IGNORE },
{ USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_HIDCOM, HID_QUIRK_IGNORE },
{ USB_VENDOR_ID_DELORME, USB_DEVICE_ID_DELORME_EARTHMATE, HID_QUIRK_IGNORE },
+ { USB_VENDOR_ID_DELORME, USB_DEVICE_ID_DELORME_EM_LT20, HID_QUIRK_IGNORE },
{ USB_VENDOR_ID_ESSENTIAL_REALITY, USB_DEVICE_ID_ESSENTIAL_REALITY_P5, HID_QUIRK_IGNORE },
{ USB_VENDOR_ID_GLAB, USB_DEVICE_ID_4_PHIDGETSERVO_30, HID_QUIRK_IGNORE },
{ USB_VENDOR_ID_GLAB, USB_DEVICE_ID_1_PHIDGETSERVO_30, HID_QUIRK_IGNORE },
{ USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 300, HID_QUIRK_IGNORE },
{ USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 400, HID_QUIRK_IGNORE },
{ USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 500, HID_QUIRK_IGNORE },
+ { USB_VENDOR_ID_VERNIER, USB_DEVICE_ID_VERNIER_LABPRO, HID_QUIRK_IGNORE },
+ { USB_VENDOR_ID_VERNIER, USB_DEVICE_ID_VERNIER_GOTEMP, HID_QUIRK_IGNORE },
+ { USB_VENDOR_ID_VERNIER, USB_DEVICE_ID_VERNIER_SKIP, HID_QUIRK_IGNORE },
+ { USB_VENDOR_ID_VERNIER, USB_DEVICE_ID_VERNIER_CYCLOPS, HID_QUIRK_IGNORE },
{ USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_PENPARTNER, HID_QUIRK_IGNORE },
{ USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_GRAPHIRE, HID_QUIRK_IGNORE },
{ USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_GRAPHIRE + 1, HID_QUIRK_IGNORE },
{ USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_INTUOS2 + 7, HID_QUIRK_IGNORE },
{ USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_VOLITO, HID_QUIRK_IGNORE },
{ USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_PTU, HID_QUIRK_IGNORE },
+ { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_INTUOS3, HID_QUIRK_IGNORE },
+ { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_INTUOS3 + 1, HID_QUIRK_IGNORE },
+ { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_INTUOS3 + 2, HID_QUIRK_IGNORE },
+ { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_CINTIQ, HID_QUIRK_IGNORE },
{ USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_4_PHIDGETSERVO_20, HID_QUIRK_IGNORE },
{ USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_1_PHIDGETSERVO_20, HID_QUIRK_IGNORE },
+++ /dev/null
-9.0.2
-
-* Adding #ifdef to compile PWC before and after 2.6.5
-
-9.0.1
-
-9.0
-
-
-8.12
-
-* Implement motorized pan/tilt feature for Logitech QuickCam Orbit/Spere.
-
-8.11.1
-
-* Fix for PCVC720/40, would not be able to set videomode
-* Fix for Samsung MPC models, appearantly they are based on a newer chipset
-
-8.11
-
-* 20 dev_hints (per request)
-* Hot unplugging should be better, no more dangling pointers or memory leaks
-* Added reserved Logitech webcam IDs
-* Device now remembers size & fps between close()/open()
-* Removed palette stuff altogether
-
-8.10.1
-
-* Added IDs for PCVC720K/40 and Creative Labs Webcam Pro
-
-8.10
-
-* Fixed ID for QuickCam Notebook pro
-* Added GREALSIZE ioctl() call
-* Fixed bug in case PWCX was not loaded and invalid size was set
-
-8.9
-
-* Merging with kernel 2.5.49
-* Adding IDs for QuickCam Zoom & QuickCam Notebook
-
-8.8
-
-* Fixing 'leds' parameter
-* Adding IDs for Logitech QuickCam Pro 4000
-* Making URB init/cleanup a little nicer
-
-8.7
-
-* Incorporating changes in ioctl() parameter passing
-* Also changes to URB mechanism
-
-8.6
-
-* Added ID's for Visionite VCS UM100 and UC300
-* Removed YUV420-interlaced palette altogether (was confusing)
-* Removed MIRROR stuff as it didn't work anyway
-* Fixed a problem with the 'leds' parameter (wouldn't blink)
-* Added ioctl()s for advanced features: 'extended' whitebalance ioctl()s,
- CONTOUR, BACKLIGHT, FLICKER, DYNNOISE.
-* VIDIOCGCAP.name now contains real camera model name instead of
- 'Philips xxx webcam'
-* Added PROBE ioctl (see previous point & API doc)
-
-8.5
-
-* Adding IDs for Creative Labs Webcam 5
-* Adding IDs for SOTEC CMS-001 webcam
-* Solving possible hang in VIDIOCSYNC when unplugging the cam
-* Forgot to return structure in VIDIOCPWCGAWB, oops
-* Time interval for the LEDs are now in milliseconds
-
-8.4
-
-* Fixing power_save option for Vesta range
-* Handling new error codes in ISOC callback
-* Adding dev_hint module parameter, to specify /dev/videoX device nodes
-
-8.3
-
-* Adding Samsung C10 and C30 cameras
-* Removing palette module parameter
-* Fixed typo in ID of QuickCam 3000 Pro
-* Adding LED settings (blinking while in use) for ToUCam cameras.
-* Turns LED off when camera is not in use.
-
-8.2
-
-* Making module more silent when trace = 0
-* Adding QuickCam 3000 Pro IDs
-* Chrominance control for the Vesta cameras
-* Hopefully fixed problems on machines with BIGMEM and > 1GB of RAM
-* Included Oliver Neukem's lock_kernel() patch
-* Allocates less memory for image buffers
-* Adds ioctl()s for the whitebalancing
-
-8.1
-
-* Adding support for 750
-* Adding V4L GAUDIO/SAUDIO/UNIT ioctl() calls
-
-8.0
-* 'damage control' after inclusion in 2.4.5.
-* Changed wait-queue mechanism in read/mmap/poll according to the book.
-* Included YUV420P palette.
-* Changed interface to decompressor module.
-* Cleaned up pwc structure a bit.
-
-7.0
-
-* Fixed bug in vcvt_420i_yuyv; extra variables on stack were misaligned.
-* There is now a clear error message when an image size is selected that
- is only supported using the decompressor, and the decompressor isn't
- loaded.
-* When the decompressor wasn't loaded, selecting large image size
- would create skewed or double images.
-
-6.3
-
-* Introduced spinlocks for the buffer pointer manipulation; a number of
- reports seem to suggest the down()/up() semaphores were the cause of
- lockups, since they are not suitable for interrupt/user locking.
-* Separated decompressor and core code into 2 modules.
-
-6.2
-
-* Non-integral image sizes are now padded with gray or black.
-* Added SHUTTERSPEED ioctl().
-* Fixed buglet in VIDIOCPWCSAGC; the function would always return an error,
- even though the call succeeded.
-* Added hotplug support for 2.4.*.
-* Memory: the 645/646 uses less memory now.
-
-6.1
-
-* VIDIOCSPICT returns -EINVAL with invalid palettes.
-* Added saturation control.
-* Split decompressors from rest.
-* Fixed bug that would reset the framerate to the default framerate if
- the rate field was set to 0 (which is not what I intended, nl. do not
- change the framerate!).
-* VIDIOCPWCSCQUAL (setting compression quality) now takes effect immediately.
-* Workaround for a bug in the 730 sensor.
}
/* expect bcdVersion 1.0, ignore */
if (memcmp(&desc->bGUID, blan_guid, 16)
- && memcmp(&desc->bGUID, blan_guid, 16) ) {
+ && memcmp(&desc->bGUID, safe_guid, 16) ) {
/* hey, this one might _really_ be MDLM! */
dev_dbg (&intf->dev, "MDLM guid\n");
goto bad_desc;
To compile this driver as a module, choose M here: the
module will be called keyspan_pda.
+config USB_SERIAL_OPTION
+ tristate "USB Option PCMCIA serial driver"
+ depends on USB_SERIAL && USB_OHCI_HCD && PCCARD
+ help
+ Say Y here if you want to use an Option card. This is a
+ GSM card, controlled by three serial ports which are connected
+ via an OHCI adapter located on a PC card.
+
+ To compile this driver as a module, choose M here: the
+ module will be called option.
+
config USB_SERIAL_OMNINET
tristate "USB ZyXEL omni.net LCD Plus Driver (EXPERIMENTAL)"
depends on USB_SERIAL && EXPERIMENTAL
obj-$(CONFIG_USB_SERIAL_KOBIL_SCT) += kobil_sct.o
obj-$(CONFIG_USB_SERIAL_MCT_U232) += mct_u232.o
obj-$(CONFIG_USB_SERIAL_OMNINET) += omninet.o
+obj-$(CONFIG_USB_SERIAL_OPTION) += option.o
obj-$(CONFIG_USB_SERIAL_PL2303) += pl2303.o
obj-$(CONFIG_USB_SERIAL_SAFE) += safe_serial.o
obj-$(CONFIG_USB_SERIAL_TI) += ti_usb_3410_5052.o
* modify it under the terms of the GNU General Public License version
* 2 as published by the Free Software Foundation.
*
+ * Support to set flow control line levels using TIOCMGET and TIOCMSET
+ * thanks to Karl Hiramoto karl@hiramoto.org. RTSCTS hardware flow
+ * control thanks to Munir Nassar nassarmu@real-time.com
+ *
+ * Outstanding Issues:
+ * Buffers are not flushed when the port is opened.
+ * Multiple calls to write() may fail with "Resource temporarily unavailable"
+ *
*/
#include <linux/config.h>
/*
* Version Information
*/
-#define DRIVER_VERSION "v0.03"
+#define DRIVER_VERSION "v0.04"
#define DRIVER_DESC "Silicon Labs CP2101/CP2102 RS232 serial adaptor driver"
/*
static void cp2101_close(struct usb_serial_port*, struct file*);
static void cp2101_get_termios(struct usb_serial_port*);
static void cp2101_set_termios(struct usb_serial_port*, struct termios*);
+static int cp2101_tiocmget (struct usb_serial_port *, struct file *);
+static int cp2101_tiocmset (struct usb_serial_port *, struct file *,
+ unsigned int, unsigned int);
static void cp2101_break_ctl(struct usb_serial_port*, int);
static int cp2101_startup (struct usb_serial *);
static void cp2101_shutdown(struct usb_serial*);
static int debug;
static struct usb_device_id id_table [] = {
- {USB_DEVICE(0x10c4, 0xea60) }, /*Silicon labs factory default*/
- {USB_DEVICE(0x10ab, 0x10c5) }, /*Siemens MC60 Cable*/
- { } /* Terminating Entry*/
+ { USB_DEVICE(0x10C4, 0xEA60) }, /* Silicon Labs factory default */
+ { USB_DEVICE(0x10C4, 0x80CA) }, /* Degree Controls Inc */
+ { USB_DEVICE(0x10AB, 0x10C5) }, /* Siemens MC60 Cable */
+ { } /* Terminating Entry */
};
MODULE_DEVICE_TABLE (usb, id_table);
.close = cp2101_close,
.break_ctl = cp2101_break_ctl,
.set_termios = cp2101_set_termios,
+ .tiocmget = cp2101_tiocmget,
+ .tiocmset = cp2101_tiocmset,
.attach = cp2101_startup,
.shutdown = cp2101_shutdown,
};
-/*Config request types*/
+/* Config request types */
#define REQTYPE_HOST_TO_DEVICE 0x41
#define REQTYPE_DEVICE_TO_HOST 0xc1
-/*Config SET requests. To GET, add 1 to the request number*/
-#define CP2101_UART 0x00 /*Enable / Disable*/
-#define CP2101_BAUDRATE 0x01 /*(BAUD_RATE_GEN_FREQ / baudrate)*/
-#define CP2101_BITS 0x03 /*0x(0)(data bits)(parity)(stop bits)*/
-#define CP2101_BREAK 0x05 /*On / Off*/
-#define CP2101_DTRRTS 0x07 /*101 / 202 ???*/
-#define CP2101_CONFIG_16 0x13 /*16 bytes of config data ???*/
-#define CP2101_CONFIG_6 0x19 /*6 bytes of config data ???*/
+/* Config SET requests. To GET, add 1 to the request number */
+#define CP2101_UART 0x00 /* Enable / Disable */
+#define CP2101_BAUDRATE 0x01 /* (BAUD_RATE_GEN_FREQ / baudrate) */
+#define CP2101_BITS 0x03 /* 0x(0)(databits)(parity)(stopbits) */
+#define CP2101_BREAK 0x05 /* On / Off */
+#define CP2101_CONTROL 0x07 /* Flow control line states */
+#define CP2101_MODEMCTL 0x13 /* Modem controls */
+#define CP2101_CONFIG_6 0x19 /* 6 bytes of config data ??? */
-/*CP2101_UART*/
+/* CP2101_UART */
#define UART_ENABLE 0x0001
#define UART_DISABLE 0x0000
-/*CP2101_BAUDRATE*/
+/* CP2101_BAUDRATE */
#define BAUD_RATE_GEN_FREQ 0x384000
-/*CP2101_BITS*/
+/* CP2101_BITS */
#define BITS_DATA_MASK 0X0f00
+#define BITS_DATA_5 0X0500
#define BITS_DATA_6 0X0600
#define BITS_DATA_7 0X0700
#define BITS_DATA_8 0X0800
#define BITS_STOP_1 0x0000
#define BITS_STOP_1_5 0x0001
#define BITS_STOP_2 0x0002
+
+/* CP2101_BREAK */
#define BREAK_ON 0x0000
#define BREAK_OFF 0x0001
+/* CP2101_CONTROL */
+#define CONTROL_DTR 0x0001
+#define CONTROL_RTS 0x0002
+#define CONTROL_CTS 0x0010
+#define CONTROL_DSR 0x0020
+#define CONTROL_RING 0x0040
+#define CONTROL_DCD 0x0080
+#define CONTROL_WRITE_DTR 0x0100
+#define CONTROL_WRITE_RTS 0x0200
-static int cp2101_get_config(struct usb_serial_port* port, u8 request)
+/*
+ * cp2101_get_config
+ * Reads from the CP2101 configuration registers
+ * 'size' is specified in bytes.
+ * 'data' is a pointer to a pre-allocated array of integers large
+ * enough to hold 'size' bytes (with 4 bytes to each integer)
+ */
+static int cp2101_get_config(struct usb_serial_port* port, u8 request,
+ unsigned int *data, int size)
{
struct usb_serial *serial = port->serial;
- unsigned char buf[4];
- unsigned int value;
- int result, i;
+ u32 *buf;
+ int result, i, length;
+
+ /* Number of integers required to contain the array */
+ length = (((size - 1) | 3) + 1)/4;
+
+ buf = kmalloc (length * sizeof(u32), GFP_KERNEL);
+ memset(buf, 0, length * sizeof(u32));
+
+ if (!buf) {
+ dev_err(&port->dev, "%s - out of memory.\n", __FUNCTION__);
+ return -ENOMEM;
+ }
- /*For get requests, the request number must be incremented*/
+ /* For get requests, the request number must be incremented */
request++;
- /*Issue the request, attempting to read 4 bytes*/
+ /* Issue the request, attempting to read 'size' bytes */
result = usb_control_msg (serial->dev,usb_rcvctrlpipe (serial->dev, 0),
request, REQTYPE_DEVICE_TO_HOST, 0x0000,
- 0, buf, 4, 300);
+ 0, buf, size, 300);
- if (result < 0) {
- dev_err(&port->dev, "%s - Unable to send config request, "
- "request=0x%x result=%d\n",
- __FUNCTION__, request, result);
- return result;
- }
+ /* Convert data into an array of integers */
+ for (i=0; i<length; i++)
+ data[i] = le32_to_cpu(buf[i]);
- /*Assemble each byte read into an integer value*/
- value = 0;
- for (i=0; i<4 && i<result; i++)
- value |= (buf[i] << (i * 8));
+ kfree(buf);
- dbg( " %s - request=0x%x result=%d value=0x%x",
- __FUNCTION__, request, result, value);
+ if (result != size) {
+ dev_err(&port->dev, "%s - Unable to send config request, "
+ "request=0x%x size=%d result=%d\n",
+ __FUNCTION__, request, size, result);
+ return -EPROTO;
+ }
- return value;
+ return 0;
}
-static int cp2101_set_config(struct usb_serial_port* port, u8 request, u16 value)
+/*
+ * cp2101_set_config
+ * Writes to the CP2101 configuration registers
+ * Values less than 16 bits wide are sent directly
+ * 'size' is specified in bytes.
+ */
+static int cp2101_set_config(struct usb_serial_port* port, u8 request,
+ unsigned int *data, int size)
{
struct usb_serial *serial = port->serial;
- int result;
- result = usb_control_msg (serial->dev, usb_sndctrlpipe(serial->dev, 0),
- request, REQTYPE_HOST_TO_DEVICE, value,
- 0, NULL, 0, 300);
+ u32 *buf;
+ int result, i, length;
- if (result <0) {
- dev_err(&port->dev, "%s - Unable to send config request, "
- "request=0x%x value=0x%x result=%d\n",
- __FUNCTION__, request, value, result);
- return result;
+ /* Number of integers required to contain the array */
+ length = (((size - 1) | 3) + 1)/4;
+
+ buf = kmalloc(length * sizeof(u32), GFP_KERNEL);
+ if (!buf) {
+ dev_err(&port->dev, "%s - out of memory.\n",
+ __FUNCTION__);
+ return -ENOMEM;
+ }
+
+ /* Array of integers into bytes */
+ for (i = 0; i < length; i++)
+ buf[i] = cpu_to_le32(data[i]);
+
+ if (size > 2) {
+ result = usb_control_msg (serial->dev,
+ usb_sndctrlpipe(serial->dev, 0),
+ request, REQTYPE_HOST_TO_DEVICE, 0x0000,
+ 0, buf, size, 300);
+ } else {
+ result = usb_control_msg (serial->dev,
+ usb_sndctrlpipe(serial->dev, 0),
+ request, REQTYPE_HOST_TO_DEVICE, data[0],
+ 0, NULL, 0, 300);
}
- dbg(" %s - request=0x%x value=0x%x result=%d",
- __FUNCTION__, request, value, result);
+ kfree(buf);
+
+ if ((size > 2 && result != size) || result < 0) {
+ dev_err(&port->dev, "%s - Unable to send request, "
+ "request=0x%x size=%d result=%d\n",
+ __FUNCTION__, request, size, result);
+ return -EPROTO;
+ }
+ /* Single data value */
+ result = usb_control_msg (serial->dev,
+ usb_sndctrlpipe(serial->dev, 0),
+ request, REQTYPE_HOST_TO_DEVICE, data[0],
+ 0, NULL, 0, 300);
return 0;
}
+/*
+ * cp2101_set_config_single
+ * Convenience function for calling cp2101_set_config on single data values
+ * without requiring an integer pointer
+ */
+static inline int cp2101_set_config_single(struct usb_serial_port* port,
+ u8 request, unsigned int data)
+{
+ return cp2101_set_config(port, request, &data, 2);
+}
+
static int cp2101_open (struct usb_serial_port *port, struct file *filp)
{
struct usb_serial *serial = port->serial;
dbg("%s - port %d", __FUNCTION__, port->number);
- if (cp2101_set_config(port, CP2101_UART, UART_ENABLE)) {
+ if (cp2101_set_config_single(port, CP2101_UART, UART_ENABLE)) {
dev_err(&port->dev, "%s - Unable to enable UART\n",
__FUNCTION__);
return -EPROTO;
return result;
}
- /*Configure the termios structure*/
+ /* Configure the termios structure */
cp2101_get_termios(port);
+ /* Set the DTR and RTS pins low */
+ cp2101_tiocmset(port, NULL, TIOCM_DTR | TIOCM_RTS, 0);
+
return 0;
}
usb_kill_urb(port->write_urb);
usb_kill_urb(port->read_urb);
- cp2101_set_config(port, CP2101_UART, UART_DISABLE);
+ cp2101_set_config_single(port, CP2101_UART, UART_DISABLE);
}
-/* cp2101_get_termios*/
-/* Reads the baud rate, data bits, parity and stop bits from the device*/
-/* Corrects any unsupported values*/
-/* Configures the termios structure to reflect the state of the device*/
+/*
+ * cp2101_get_termios
+ * Reads the baud rate, data bits, parity, stop bits and flow control mode
+ * from the device, corrects any unsupported values, and configures the
+ * termios structure to reflect the state of the device
+ */
static void cp2101_get_termios (struct usb_serial_port *port)
{
- unsigned int cflag;
+ unsigned int cflag, modem_ctl[4];
int baud;
int bits;
}
cflag = port->tty->termios->c_cflag;
- baud = cp2101_get_config(port, CP2101_BAUDRATE);
- /*Convert to baudrate*/
+ cp2101_get_config(port, CP2101_BAUDRATE, &baud, 2);
+ /* Convert to baudrate */
if (baud)
baud = BAUD_RATE_GEN_FREQ / baud;
dbg("%s - baud rate = %d", __FUNCTION__, baud);
cflag &= ~CBAUD;
switch (baud) {
- /* The baud rates which are commented out below
+ /*
+ * The baud rates which are commented out below
* appear to be supported by the device
* but are non-standard
*/
dbg("%s - Baud rate is not supported, "
"using 9600 baud", __FUNCTION__);
cflag |= B9600;
- cp2101_set_config(port, CP2101_BAUDRATE,
+ cp2101_set_config_single(port, CP2101_BAUDRATE,
(BAUD_RATE_GEN_FREQ/9600));
break;
}
- bits = cp2101_get_config(port, CP2101_BITS);
+ cp2101_get_config(port, CP2101_BITS, &bits, 2);
cflag &= ~CSIZE;
switch(bits & BITS_DATA_MASK) {
+ case BITS_DATA_5:
+ dbg("%s - data bits = 5", __FUNCTION__);
+ cflag |= CS5;
+ break;
case BITS_DATA_6:
dbg("%s - data bits = 6", __FUNCTION__);
cflag |= CS6;
cflag |= CS8;
bits &= ~BITS_DATA_MASK;
bits |= BITS_DATA_8;
- cp2101_set_config(port, CP2101_BITS, bits);
+ cp2101_set_config(port, CP2101_BITS, &bits, 2);
break;
default:
dbg("%s - Unknown number of data bits, "
cflag |= CS8;
bits &= ~BITS_DATA_MASK;
bits |= BITS_DATA_8;
- cp2101_set_config(port, CP2101_BITS, bits);
+ cp2101_set_config(port, CP2101_BITS, &bits, 2);
break;
}
"disabling parity)", __FUNCTION__);
cflag &= ~PARENB;
bits &= ~BITS_PARITY_MASK;
- cp2101_set_config(port, CP2101_BITS, bits);
+ cp2101_set_config(port, CP2101_BITS, &bits, 2);
break;
case BITS_PARITY_SPACE:
dbg("%s - parity = SPACE (not supported, "
"disabling parity)", __FUNCTION__);
cflag &= ~PARENB;
bits &= ~BITS_PARITY_MASK;
- cp2101_set_config(port, CP2101_BITS, bits);
+ cp2101_set_config(port, CP2101_BITS, &bits, 2);
break;
default:
dbg("%s - Unknown parity mode, "
"disabling parity", __FUNCTION__);
cflag &= ~PARENB;
bits &= ~BITS_PARITY_MASK;
- cp2101_set_config(port, CP2101_BITS, bits);
+ cp2101_set_config(port, CP2101_BITS, &bits, 2);
break;
}
break;
case BITS_STOP_1_5:
dbg("%s - stop bits = 1.5 (not supported, "
- "using 1 stop bit", __FUNCTION__);
+ "using 1 stop bit)", __FUNCTION__);
bits &= ~BITS_STOP_MASK;
- cp2101_set_config(port, CP2101_BITS, bits);
+ cp2101_set_config(port, CP2101_BITS, &bits, 2);
break;
case BITS_STOP_2:
dbg("%s - stop bits = 2", __FUNCTION__);
dbg("%s - Unknown number of stop bits, "
"using 1 stop bit", __FUNCTION__);
bits &= ~BITS_STOP_MASK;
- cp2101_set_config(port, CP2101_BITS, bits);
+ cp2101_set_config(port, CP2101_BITS, &bits, 2);
break;
}
+ cp2101_get_config(port, CP2101_MODEMCTL, modem_ctl, 16);
+ if (modem_ctl[0] & 0x0008) {
+ dbg("%s - flow control = CRTSCTS", __FUNCTION__);
+ cflag |= CRTSCTS;
+ } else {
+ dbg("%s - flow control = NONE", __FUNCTION__);
+ cflag &= ~CRTSCTS;
+ }
+
port->tty->termios->c_cflag = cflag;
}
struct termios *old_termios)
{
unsigned int cflag, old_cflag=0;
- int baud=0;
- int bits;
+ int baud=0, bits;
+ unsigned int modem_ctl[4];
dbg("%s - port %d", __FUNCTION__, port->number);
}
cflag = port->tty->termios->c_cflag;
- /* check that they really want us to change something */
+ /* Check that they really want us to change something */
if (old_termios) {
if ((cflag == old_termios->c_cflag) &&
(RELEVANT_IFLAG(port->tty->termios->c_iflag)
/* If the baud rate is to be updated*/
if ((cflag & CBAUD) != (old_cflag & CBAUD)) {
switch (cflag & CBAUD) {
- /* The baud rates which are commented out below
+ /*
+ * The baud rates which are commented out below
* appear to be supported by the device
* but are non-standard
*/
if (baud) {
dbg("%s - Setting baud rate to %d baud", __FUNCTION__,
baud);
- if (cp2101_set_config(port, CP2101_BAUDRATE,
+ if (cp2101_set_config_single(port, CP2101_BAUDRATE,
(BAUD_RATE_GEN_FREQ / baud)))
dev_err(&port->dev, "Baud rate requested not "
"supported by device\n");
}
}
- /*If the number of
Code Review / linux-3.10.git / commitdiff