m68k: amiga - A3000 SCSI platform device conversion
Geert Uytterhoeven [Sun, 5 Apr 2009 11:02:45 +0000 (13:02 +0200)]
Acked-by: James Bottomley <James.Bottomley@suse.de>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>

arch/m68k/amiga/platform.c
drivers/scsi/a3000.c

index 38f18bf..df1fae3 100644 (file)
@@ -58,6 +58,13 @@ subsys_initcall(amiga_init_bus);
 #endif /* CONFIG_ZORRO */
 
 
+static const struct resource a3000_scsi_resource __initconst = {
+       .start  = 0xdd0000,
+       .end    = 0xdd00ff,
+       .flags  = IORESOURCE_MEM,
+};
+
+
 static int __init amiga_init_devices(void)
 {
        if (!MACH_IS_AMIGA)
@@ -77,6 +84,10 @@ static int __init amiga_init_devices(void)
        if (AMIGAHW_PRESENT(AMI_FLOPPY))
                platform_device_register_simple("amiga-floppy", -1, NULL, 0);
 
+       if (AMIGAHW_PRESENT(A3000_SCSI))
+               platform_device_register_simple("amiga-a3000-scsi", -1,
+                                               &a3000_scsi_resource, 1);
+
        return 0;
 }
 
index 79a4a3c..7f09d89 100644 (file)
@@ -1,28 +1,21 @@
 #include <linux/types.h>
 #include <linux/mm.h>
-#include <linux/slab.h>
-#include <linux/blkdev.h>
 #include <linux/ioport.h>
 #include <linux/init.h>
+#include <linux/slab.h>
 #include <linux/spinlock.h>
 #include <linux/interrupt.h>
+#include <linux/platform_device.h>
 
-#include <asm/setup.h>
 #include <asm/page.h>
 #include <asm/pgtable.h>
 #include <asm/amigaints.h>
 #include <asm/amigahw.h>
-#include <asm/irq.h>
 
 #include "scsi.h"
-#include <scsi/scsi_host.h>
 #include "wd33c93.h"
 #include "a3000.h"
 
-#include <linux/stat.h>
-
-
-static int a3000_release(struct Scsi_Host *instance);
 
 static irqreturn_t a3000_intr(int irq, void *data)
 {
@@ -39,7 +32,7 @@ static irqreturn_t a3000_intr(int irq, void *data)
                spin_unlock_irqrestore(instance->host_lock, flags);
                return IRQ_HANDLED;
        }
-       printk("Non-serviced A3000 SCSI-interrupt? ISTR = %02x\n", status);
+       pr_warning("Non-serviced A3000 SCSI-interrupt? ISTR = %02x\n", status);
        return IRQ_NONE;
 }
 
@@ -162,93 +155,136 @@ static void dma_stop(struct Scsi_Host *instance, struct scsi_cmnd *SCpnt,
        }
 }
 
-static int __init a3000_detect(struct scsi_host_template *tpnt)
+static int a3000_bus_reset(struct scsi_cmnd *cmd)
+{
+       struct Scsi_Host *instance = cmd->device->host;
+
+       /* FIXME perform bus-specific reset */
+
+       /* FIXME 2: kill this entire function, which should
+          cause mid-layer to call wd33c93_host_reset anyway? */
+
+       spin_lock_irq(instance->host_lock);
+       wd33c93_host_reset(cmd);
+       spin_unlock_irq(instance->host_lock);
+
+       return SUCCESS;
+}
+
+static struct scsi_host_template amiga_a3000_scsi_template = {
+       .module                 = THIS_MODULE,
+       .name                   = "Amiga 3000 built-in SCSI",
+       .proc_info              = wd33c93_proc_info,
+       .proc_name              = "A3000",
+       .queuecommand           = wd33c93_queuecommand,
+       .eh_abort_handler       = wd33c93_abort,
+       .eh_bus_reset_handler   = a3000_bus_reset,
+       .eh_host_reset_handler  = wd33c93_host_reset,
+       .can_queue              = CAN_QUEUE,
+       .this_id                = 7,
+       .sg_tablesize           = SG_ALL,
+       .cmd_per_lun            = CMD_PER_LUN,
+       .use_clustering         = ENABLE_CLUSTERING
+};
+
+static int __init amiga_a3000_scsi_probe(struct platform_device *pdev)
 {
+       struct resource *res;
        struct Scsi_Host *instance;
-       wd33c93_regs wdregs;
+       int error;
        struct a3000_scsiregs *regs;
+       wd33c93_regs wdregs;
        struct WD33C93_hostdata *hdata;
 
-       if (!MACH_IS_AMIGA || !AMIGAHW_PRESENT(A3000_SCSI))
-               return 0;
-       if (!request_mem_region(0xDD0000, 256, "wd33c93"))
-               return 0;
+       res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+       if (!res)
+               return -ENODEV;
 
-       tpnt->proc_name = "A3000";
-       tpnt->proc_info = &wd33c93_proc_info;
+       if (!request_mem_region(res->start, resource_size(res), "wd33c93"))
+               return -EBUSY;
 
-       instance = scsi_register(tpnt, sizeof(struct WD33C93_hostdata));
-       if (instance == NULL)
-               goto fail_register;
+       instance = scsi_host_alloc(&amiga_a3000_scsi_template,
+                                  sizeof(struct WD33C93_hostdata));
+       if (!instance) {
+               error = -ENOMEM;
+               goto fail_alloc;
+       }
 
-       instance->base = ZTWO_VADDR(0xDD0000);
+       instance->base = ZTWO_VADDR(res->start);
        instance->irq = IRQ_AMIGA_PORTS;
+
        regs = (struct a3000_scsiregs *)(instance->base);
        regs->DAWR = DAWR_A3000;
+
        wdregs.SASR = &regs->SASR;
        wdregs.SCMD = &regs->SCMD;
+
        hdata = shost_priv(instance);
        hdata->no_sync = 0xff;
        hdata->fast = 0;
        hdata->dma_mode = CTRL_DMA;
+
        wd33c93_init(instance, wdregs, dma_setup, dma_stop, WD33C93_FS_12_15);
-       if (request_irq(IRQ_AMIGA_PORTS, a3000_intr, IRQF_SHARED, "A3000 SCSI",
-                       instance))
+       error = request_irq(IRQ_AMIGA_PORTS, a3000_intr, IRQF_SHARED,
+                           "A3000 SCSI", instance);
+       if (error)
                goto fail_irq;
+
        regs->CNTR = CNTR_PDMD | CNTR_INTEN;
 
-       return 1;
+       error = scsi_add_host(instance, NULL);
+       if (error)
+               goto fail_host;
 
-fail_irq:
-       scsi_unregister(instance);
-fail_register:
-       release_mem_region(0xDD0000, 256);
+       platform_set_drvdata(pdev, instance);
+
+       scsi_scan_host(instance);
        return 0;
+
+fail_host:
+       free_irq(IRQ_AMIGA_PORTS, instance);
+fail_irq:
+       scsi_host_put(instance);
+fail_alloc:
+       release_mem_region(res->start, resource_size(res));
+       return error;
 }
 
-static int a3000_bus_reset(struct scsi_cmnd *cmd)
+static int __exit amiga_a3000_scsi_remove(struct platform_device *pdev)
 {
-       /* FIXME perform bus-specific reset */
-
-       /* FIXME 2: kill this entire function, which should
-          cause mid-layer to call wd33c93_host_reset anyway? */
-
-       spin_lock_irq(cmd->device->host->host_lock);
-       wd33c93_host_reset(cmd);
-       spin_unlock_irq(cmd->device->host->host_lock);
+       struct Scsi_Host *instance = platform_get_drvdata(pdev);
+       struct a3000_scsiregs *regs = (struct a3000_scsiregs *)(instance->base);
+       struct resource *res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 
-       return SUCCESS;
+       regs->CNTR = 0;
+       scsi_remove_host(instance);
+       free_irq(IRQ_AMIGA_PORTS, instance);
+       scsi_host_put(instance);
+       release_mem_region(res->start, resource_size(res));
+       return 0;
 }
 
-#define HOSTS_C
-
-static struct scsi_host_template driver_template = {
-       .proc_name              = "A3000",
-       .name                   = "Amiga 3000 built-in SCSI",
-       .detect                 = a3000_detect,
-       .release                = a3000_release,
-       .queuecommand           = wd33c93_queuecommand,
-       .eh_abort_handler       = wd33c93_abort,
-       .eh_bus_reset_handler   = a3000_bus_reset,
-       .eh_host_reset_handler  = wd33c93_host_reset,
-       .can_queue              = CAN_QUEUE,
-       .this_id                = 7,
-       .sg_tablesize           = SG_ALL,
-       .cmd_per_lun            = CMD_PER_LUN,
-       .use_clustering         = ENABLE_CLUSTERING
+static struct platform_driver amiga_a3000_scsi_driver = {
+       .remove = __exit_p(amiga_a3000_scsi_remove),
+       .driver   = {
+               .name   = "amiga-a3000-scsi",
+               .owner  = THIS_MODULE,
+       },
 };
 
-
-#include "scsi_module.c"
-
-static int a3000_release(struct Scsi_Host *instance)
+static int __init amiga_a3000_scsi_init(void)
 {
-       struct a3000_scsiregs *regs = (struct a3000_scsiregs *)(instance->base);
+       return platform_driver_probe(&amiga_a3000_scsi_driver,
+                                    amiga_a3000_scsi_probe);
+}
+module_init(amiga_a3000_scsi_init);
 
-       regs->CNTR = 0;
-       release_mem_region(0xDD0000, 256);
-       free_irq(IRQ_AMIGA_PORTS, a3000_intr);
-       return 1;
+static void __exit amiga_a3000_scsi_exit(void)
+{
+       platform_driver_unregister(&amiga_a3000_scsi_driver);
 }
+module_exit(amiga_a3000_scsi_exit);
 
+MODULE_DESCRIPTION("Amiga 3000 built-in SCSI");
 MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:amiga-a3000-scsi");