[PATCH] Fix build error on zs serial driver
[linux-2.6.git] / drivers / tc / tc.c
index a0e5af6..f77f62a 100644 (file)
 /*
- * tc-init: We assume the TURBOchannel to be up and running so
- * just probe for Modules and fill in the global data structure
- * tc_bus.
+ *     TURBOchannel bus services.
  *
- * This file is subject to the terms and conditions of the GNU General Public
- * License.  See the file "COPYING" in the main directory of this archive
- * for more details.
+ *     Copyright (c) Harald Koerfgen, 1998
+ *     Copyright (c) 2001, 2003, 2005, 2006  Maciej W. Rozycki
+ *     Copyright (c) 2005  James Simmons
  *
- * Copyright (c) Harald Koerfgen, 1998
- * Copyright (c) 2001, 2003, 2005  Maciej W. Rozycki
+ *     This file is subject to the terms and conditions of the GNU
+ *     General Public License.  See the file "COPYING" in the main
+ *     directory of this archive for more details.
  */
+#include <linux/compiler.h>
+#include <linux/errno.h>
 #include <linux/init.h>
+#include <linux/ioport.h>
 #include <linux/kernel.h>
+#include <linux/list.h>
 #include <linux/module.h>
 #include <linux/string.h>
+#include <linux/tc.h>
 #include <linux/types.h>
 
-#include <asm/addrspace.h>
-#include <asm/bug.h>
-#include <asm/errno.h>
 #include <asm/io.h>
-#include <asm/paccess.h>
 
-#include <asm/dec/machtype.h>
-#include <asm/dec/prom.h>
-#include <asm/dec/tcinfo.h>
-#include <asm/dec/tcmodule.h>
-#include <asm/dec/interrupts.h>
-
-MODULE_LICENSE("GPL");
-slot_info tc_bus[MAX_SLOT];
-static int num_tcslots;
-static tcinfo *info;
+static struct tc_bus tc_bus = {
+       .name = "TURBOchannel",
+};
 
 /*
- * Interface to the world. Read comment in include/asm-mips/tc.h.
+ * Probing for TURBOchannel modules.
  */
-
-int search_tc_card(const char *name)
-{
-       int slot;
-       slot_info *sip;
-
-       for (slot = 0; slot < num_tcslots; slot++) {
-               sip = &tc_bus[slot];
-               if ((sip->flags & FREE) &&
-                   (strncmp(sip->name, name, strlen(name)) == 0)) {
-                       return slot;
-               }
-       }
-
-       return -ENODEV;
-}
-
-void claim_tc_card(int slot)
-{
-       if (tc_bus[slot].flags & IN_USE) {
-               printk("claim_tc_card: attempting to claim a card already in use\n");
-               return;
-       }
-       tc_bus[slot].flags &= ~FREE;
-       tc_bus[slot].flags |= IN_USE;
-}
-
-void release_tc_card(int slot)
+static void __init tc_bus_add_devices(struct tc_bus *tbus)
 {
-       if (tc_bus[slot].flags & FREE) {
-               printk("release_tc_card: "
-                      "attempting to release a card already free\n");
-               return;
-       }
-       tc_bus[slot].flags &= ~IN_USE;
-       tc_bus[slot].flags |= FREE;
-}
-
-unsigned long get_tc_base_addr(int slot)
-{
-       return tc_bus[slot].base_addr;
-}
-
-unsigned long get_tc_irq_nr(int slot)
-{
-       return tc_bus[slot].interrupt;
-}
-
-unsigned long get_tc_speed(void)
-{
-       return 100000 * (10000 / (unsigned long)info->clk_period);
-}
-
-/*
- * Probing for TURBOchannel modules
- */
-static void __init tc_probe(unsigned long startaddr, unsigned long size,
-                           int slots)
-{
-       unsigned long slotaddr;
+       resource_size_t slotsize = tbus->info.slot_size << 20;
+       resource_size_t extslotsize = tbus->ext_slot_size;
+       resource_size_t slotaddr;
+       resource_size_t extslotaddr;
+       resource_size_t devsize;
+       void __iomem *module;
+       struct tc_dev *tdev;
        int i, slot, err;
-       long offset;
        u8 pattern[4];
-       volatile u8 *module;
+       long offset;
 
-       for (slot = 0; slot < slots; slot++) {
-               slotaddr = startaddr + slot * size;
-               module = ioremap_nocache(slotaddr, size);
+       for (slot = 0; slot < tbus->num_tcslots; slot++) {
+               slotaddr = tbus->slot_base + slot * slotsize;
+               extslotaddr = tbus->ext_slot_base + slot * extslotsize;
+               module = ioremap_nocache(slotaddr, slotsize);
                BUG_ON(!module);
 
-               offset = OLDCARD;
+               offset = TC_OLDCARD;
 
                err = 0;
-               err |= get_dbe(pattern[0], module + OLDCARD + TC_PATTERN0);
-               err |= get_dbe(pattern[1], module + OLDCARD + TC_PATTERN1);
-               err |= get_dbe(pattern[2], module + OLDCARD + TC_PATTERN2);
-               err |= get_dbe(pattern[3], module + OLDCARD + TC_PATTERN3);
-               if (err) {
-                       iounmap(module);
-                       continue;
-               }
+               err |= tc_preadb(pattern + 0, module + offset + TC_PATTERN0);
+               err |= tc_preadb(pattern + 1, module + offset + TC_PATTERN1);
+               err |= tc_preadb(pattern + 2, module + offset + TC_PATTERN2);
+               err |= tc_preadb(pattern + 3, module + offset + TC_PATTERN3);
+               if (err)
+                       goto out_err;
 
                if (pattern[0] != 0x55 || pattern[1] != 0x00 ||
                    pattern[2] != 0xaa || pattern[3] != 0xff) {
-                       offset = NEWCARD;
+                       offset = TC_NEWCARD;
 
                        err = 0;
-                       err |= get_dbe(pattern[0], module + TC_PATTERN0);
-                       err |= get_dbe(pattern[1], module + TC_PATTERN1);
-                       err |= get_dbe(pattern[2], module + TC_PATTERN2);
-                       err |= get_dbe(pattern[3], module + TC_PATTERN3);
-                       if (err) {
-                               iounmap(module);
-                               continue;
-                       }
+                       err |= tc_preadb(pattern + 0,
+                                        module + offset + TC_PATTERN0);
+                       err |= tc_preadb(pattern + 1,
+                                        module + offset + TC_PATTERN1);
+                       err |= tc_preadb(pattern + 2,
+                                        module + offset + TC_PATTERN2);
+                       err |= tc_preadb(pattern + 3,
+                                        module + offset + TC_PATTERN3);
+                       if (err)
+                               goto out_err;
                }
 
                if (pattern[0] != 0x55 || pattern[1] != 0x00 ||
-                   pattern[2] != 0xaa || pattern[3] != 0xff) {
-                       iounmap(module);
-                       continue;
+                   pattern[2] != 0xaa || pattern[3] != 0xff)
+                       goto out_err;
+
+               /* Found a board, allocate it an entry in the list */
+               tdev = kzalloc(sizeof(*tdev), GFP_KERNEL);
+               if (!tdev) {
+                       printk(KERN_ERR "tc%x: unable to allocate tc_dev\n",
+                              slot);
+                       goto out_err;
                }
+               sprintf(tdev->dev.bus_id, "tc%x", slot);
+               tdev->bus = tbus;
+               tdev->dev.parent = &tbus->dev;
+               tdev->dev.bus = &tc_bus_type;
+               tdev->slot = slot;
 
-               tc_bus[slot].base_addr = slotaddr;
                for (i = 0; i < 8; i++) {
-                       tc_bus[slot].firmware[i] =
-                               module[TC_FIRM_VER + offset + 4 * i];
-                       tc_bus[slot].vendor[i] =
-                               module[TC_VENDOR + offset + 4 * i];
-                       tc_bus[slot].name[i] =
-                               module[TC_MODULE + offset + 4 * i];
+                       tdev->firmware[i] =
+                               readb(module + offset + TC_FIRM_VER + 4 * i);
+                       tdev->vendor[i] =
+                               readb(module + offset + TC_VENDOR + 4 * i);
+                       tdev->name[i] =
+                               readb(module + offset + TC_MODULE + 4 * i);
                }
-               tc_bus[slot].firmware[8] = 0;
-               tc_bus[slot].vendor[8] = 0;
-               tc_bus[slot].name[8] = 0;
-               /*
-                * Looks unneccesary, but we may change
-                * TC? in the future
-                */
-               switch (slot) {
-               case 0:
-                       tc_bus[slot].interrupt = dec_interrupt[DEC_IRQ_TC0];
-                       break;
-               case 1:
-                       tc_bus[slot].interrupt = dec_interrupt[DEC_IRQ_TC1];
-                       break;
-               case 2:
-                       tc_bus[slot].interrupt = dec_interrupt[DEC_IRQ_TC2];
-                       break;
-               /*
-                * Yuck! DS5000/200 onboard devices
-                */
-               case 5:
-                       tc_bus[slot].interrupt = dec_interrupt[DEC_IRQ_TC5];
-                       break;
-               case 6:
-                       tc_bus[slot].interrupt = dec_interrupt[DEC_IRQ_TC6];
-                       break;
-               default:
-                       tc_bus[slot].interrupt = -1;
-                       break;
+               tdev->firmware[8] = 0;
+               tdev->vendor[8] = 0;
+               tdev->name[8] = 0;
+
+               pr_info("%s: %s %s %s\n", tdev->dev.bus_id, tdev->vendor,
+                       tdev->name, tdev->firmware);
+
+               devsize = readb(module + offset + TC_SLOT_SIZE);
+               devsize <<= 22;
+               if (devsize <= slotsize) {
+                       tdev->resource.start = slotaddr;
+                       tdev->resource.end = slotaddr + devsize - 1;
+               } else if (devsize <= extslotsize) {
+                       tdev->resource.start = extslotaddr;
+                       tdev->resource.end = extslotaddr + devsize - 1;
+               } else {
+                       printk(KERN_ERR "%s: Cannot provide slot space "
+                              "(%dMiB required, up to %dMiB supported)\n",
+                              tdev->dev.bus_id, devsize >> 20,
+                              max(slotsize, extslotsize) >> 20);
+                       kfree(tdev);
+                       goto out_err;
                }
+               tdev->resource.name = tdev->name;
+               tdev->resource.flags = IORESOURCE_MEM;
+
+               tc_device_get_irq(tdev);
 
+               device_register(&tdev->dev);
+               list_add_tail(&tdev->node, &tbus->devices);
+
+out_err:
                iounmap(module);
        }
 }
 
 /*
- * the main entry
+ * The main entry.
  */
 static int __init tc_init(void)
 {
-       int tc_clock;
-       int i;
-       unsigned long slot0addr;
-       unsigned long slot_size;
-
-       if (!TURBOCHANNEL)
+       /* Initialize the TURBOchannel bus */
+       if (tc_bus_get_info(&tc_bus))
                return 0;
 
-       for (i = 0; i < MAX_SLOT; i++) {
-               tc_bus[i].base_addr = 0;
-               tc_bus[i].name[0] = 0;
-               tc_bus[i].vendor[0] = 0;
-               tc_bus[i].firmware[0] = 0;
-               tc_bus[i].interrupt = -1;
-               tc_bus[i].flags = FREE;
-       }
-
-       info = rex_gettcinfo();
-       slot0addr = CPHYSADDR((long)rex_slot_address(0));
-
-       switch (mips_machtype) {
-       case MACH_DS5000_200:
-               num_tcslots = 7;
-               break;
-       case MACH_DS5000_1XX:
-       case MACH_DS5000_2X0:
-       case MACH_DS5900:
-               num_tcslots = 3;
-               break;
-       case MACH_DS5000_XX:
-       default:
-               num_tcslots = 2;
-               break;
-       }
-
-       tc_clock = 10000 / info->clk_period;
-
-       if (info->slot_size && slot0addr) {
-               pr_info("TURBOchannel rev. %d at %d.%d MHz (with%s parity)\n",
-                       info->revision, tc_clock / 10, tc_clock % 10,
-                       info->parity ? "" : "out");
-
-               slot_size = info->slot_size << 20;
-
-               tc_probe(slot0addr, slot_size, num_tcslots);
-
-               for (i = 0; i < num_tcslots; i++) {
-                       if (!tc_bus[i].base_addr)
-                               continue;
-                       pr_info("    slot %d: %s %s %s\n", i, tc_bus[i].vendor,
-                               tc_bus[i].name, tc_bus[i].firmware);
+       INIT_LIST_HEAD(&tc_bus.devices);
+       strcpy(tc_bus.dev.bus_id, "tc");
+       device_register(&tc_bus.dev);
+
+       if (tc_bus.info.slot_size) {
+               unsigned int tc_clock = tc_get_speed(&tc_bus) / 100000;
+
+               pr_info("tc: TURBOchannel rev. %d at %d.%d MHz "
+                       "(with%s parity)\n", tc_bus.info.revision,
+                       tc_clock / 10, tc_clock % 10,
+                       tc_bus.info.parity ? "" : "out");
+
+               tc_bus.resource[0].start = tc_bus.slot_base;
+               tc_bus.resource[0].end = tc_bus.slot_base +
+                                        (tc_bus.info.slot_size << 20) *
+                                        tc_bus.num_tcslots - 1;
+               tc_bus.resource[0].name = tc_bus.name;
+               tc_bus.resource[0].flags = IORESOURCE_MEM;
+               if (request_resource(&iomem_resource,
+                                    &tc_bus.resource[0]) < 0) {
+                       printk(KERN_ERR "tc: Cannot reserve resource\n");
+                       return 0;
+               }
+               if (tc_bus.ext_slot_size) {
+                       tc_bus.resource[1].start = tc_bus.ext_slot_base;
+                       tc_bus.resource[1].end = tc_bus.ext_slot_base +
+                                                tc_bus.ext_slot_size *
+                                                tc_bus.num_tcslots - 1;
+                       tc_bus.resource[1].name = tc_bus.name;
+                       tc_bus.resource[1].flags = IORESOURCE_MEM;
+                       if (request_resource(&iomem_resource,
+                                            &tc_bus.resource[1]) < 0) {
+                               printk(KERN_ERR
+                                      "tc: Cannot reserve resource\n");
+                               release_resource(&tc_bus.resource[0]);
+                               return 0;
+                       }
                }
+
+               tc_bus_add_devices(&tc_bus);
        }
 
        return 0;
 }
 
 subsys_initcall(tc_init);
-
-EXPORT_SYMBOL(search_tc_card);
-EXPORT_SYMBOL(claim_tc_card);
-EXPORT_SYMBOL(release_tc_card);
-EXPORT_SYMBOL(get_tc_base_addr);
-EXPORT_SYMBOL(get_tc_irq_nr);
-EXPORT_SYMBOL(get_tc_speed);