Convert the mvme147.c driver to a platform device driver. This is required for conversion of the driver to the DMA API. CC: linux-scsi@xxxxxxxxxxxxxxx Link: https://lore.kernel.org/r/6d1d88ee-1cf6-c735-1e6d-bafd2096e322@xxxxxxxxx Signed-off-by: Michael Schmitz <schmitzmic@xxxxxxxxx> -- Changes from v1: - change patch index from 3 to 4 (due to insertion of m68k kmap patch) Arnd Bergmann: - use devm_platform_ioremap_resource() for wd33c93 base address --- drivers/scsi/mvme147.c | 89 +++++++++++++++++++++++++++++------------- 1 file changed, 61 insertions(+), 28 deletions(-) diff --git a/drivers/scsi/mvme147.c b/drivers/scsi/mvme147.c index 472fa043094f..ea8afeec8e56 100644 --- a/drivers/scsi/mvme147.c +++ b/drivers/scsi/mvme147.c @@ -3,6 +3,7 @@ #include <linux/mm.h> #include <linux/blkdev.h> #include <linux/interrupt.h> +#include <linux/platform_device.h> #include <linux/init.h> #include <linux/kernel.h> #include <linux/module.h> @@ -85,40 +86,52 @@ static struct scsi_host_template mvme147_host_template = { .cmd_size = sizeof(struct scsi_pointer), }; -static struct Scsi_Host *mvme147_shost; - -static int __init mvme147_init(void) +static int __init mvme147_scsi_probe(struct platform_device *pdev) { + struct resource *mres, *ires; + struct Scsi_Host *mvme147_inst; wd33c93_regs regs; struct WD33C93_hostdata *hdata; + void __iomem *base; int error = -ENOMEM; - if (!MACH_IS_MVME147) - return 0; + mres = platform_get_resource(pdev, IORESOURCE_MEM, 0); + if (!mres) + return -ENODEV; + + ires = platform_get_resource(pdev, IORESOURCE_IRQ, 0); + if (!ires) + return -ENODEV; + + if (!request_mem_region(mres->start, resource_size(mres), "wd33c93")) + return -EBUSY; - mvme147_shost = scsi_host_alloc(&mvme147_host_template, + mvme147_inst = scsi_host_alloc(&mvme147_host_template, sizeof(struct WD33C93_hostdata)); - if (!mvme147_shost) + if (!mvme147_inst) goto err_out; - mvme147_shost->base = 0xfffe4000; - mvme147_shost->irq = MVME147_IRQ_SCSI_PORT; - regs.SASR = (volatile unsigned char *)0xfffe4000; - regs.SCMD = (volatile unsigned char *)0xfffe4001; + base = devm_platform_ioremap_resource(pdev, 0); - hdata = shost_priv(mvme147_shost); + mvme147_inst->base = (unsigned int) base; + mvme147_inst->irq = ires->start; + + regs.SASR = (volatile unsigned char *)base; + regs.SCMD = (volatile unsigned char *)(base+1); + + hdata = shost_priv(mvme147_inst); hdata->no_sync = 0xff; hdata->fast = 0; hdata->dma_mode = CTRL_DMA; - wd33c93_init(mvme147_shost, regs, dma_setup, dma_stop, WD33C93_FS_8_10); + wd33c93_init(mvme147_inst, regs, dma_setup, dma_stop, WD33C93_FS_8_10); - error = request_irq(MVME147_IRQ_SCSI_PORT, mvme147_intr, 0, - "MVME147 SCSI PORT", mvme147_shost); + error = request_irq(ires->start, mvme147_intr, 0, + "MVME147 SCSI PORT", mvme147_inst); if (error) goto err_unregister; - error = request_irq(MVME147_IRQ_SCSI_DMA, mvme147_intr, 0, - "MVME147 SCSI DMA", mvme147_shost); + error = request_irq(ires->start+1, mvme147_intr, 0, + "MVME147 SCSI DMA", mvme147_inst); if (error) goto err_free_irq; #if 0 /* Disabled; causes problems booting */ @@ -133,30 +146,50 @@ static int __init mvme147_init(void) m147_pcc->dma_cntrl = 0x00; /* ensure DMA is stopped */ m147_pcc->dma_intr = 0x89; /* Ack and enable ints */ - error = scsi_add_host(mvme147_shost, NULL); + error = scsi_add_host(mvme147_inst, &pdev->dev); if (error) goto err_free_irq; - scsi_scan_host(mvme147_shost); + + platform_set_drvdata(pdev, mvme147_inst); + + scsi_scan_host(mvme147_inst); return 0; err_free_irq: - free_irq(MVME147_IRQ_SCSI_PORT, mvme147_shost); + free_irq(ires->start, mvme147_inst); err_unregister: - scsi_host_put(mvme147_shost); + scsi_host_put(mvme147_inst); err_out: return error; } -static void __exit mvme147_exit(void) +static int __exit mvme147_scsi_remove(struct platform_device *pdev) { - scsi_remove_host(mvme147_shost); + struct Scsi_Host *mvme147_inst = platform_get_drvdata(pdev); + struct resource *mres = platform_get_resource(pdev, IORESOURCE_MEM, 0); + struct resource *ires = platform_get_resource(pdev, IORESOURCE_IRQ, 0); + + scsi_remove_host(mvme147_inst); /* XXX Make sure DMA is stopped! */ - free_irq(MVME147_IRQ_SCSI_PORT, mvme147_shost); - free_irq(MVME147_IRQ_SCSI_DMA, mvme147_shost); + free_irq(ires->start, mvme147_inst); + free_irq(ires->start+1, mvme147_inst); - scsi_host_put(mvme147_shost); + iounmap((void __iomem *)mvme147_inst->base); + scsi_host_put(mvme147_inst); + release_mem_region(mres->start, resource_size(mres)); + return 0; } -module_init(mvme147_init); -module_exit(mvme147_exit); +static struct platform_driver mvme147_scsi_driver = { + .remove = __exit_p(mvme147_scsi_remove), + .driver = { + .name = "mvme147-scsi", + }, +}; + +module_platform_driver_probe(mvme147_scsi_driver, mvme147_scsi_probe); + +MODULE_DESCRIPTION("MVME147 built-in SCSI"); +MODULE_LICENSE("GPL"); +MODULE_ALIAS("platform:mvme147-scsi"); -- 2.17.1
