diff options
Diffstat (limited to 'drivers/scsi/a3000.c')
| -rw-r--r-- | drivers/scsi/a3000.c | 164 |
1 files changed, 100 insertions, 64 deletions
diff --git a/drivers/scsi/a3000.c b/drivers/scsi/a3000.c index 79a4a3c9747..7f09d89100a 100644 --- a/drivers/scsi/a3000.c +++ b/drivers/scsi/a3000.c @@ -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 = ®s->SASR; wdregs.SCMD = ®s->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"); |