From 863981e96738983919de841ec669e157e6bdaeb0 Mon Sep 17 00:00:00 2001 From: André Fabian Silva Delgado Date: Sun, 11 Sep 2016 04:34:46 -0300 Subject: Linux-libre 4.7.1-gnu --- drivers/scsi/g_NCR5380.c | 141 +++++++++++++---------------------------------- 1 file changed, 38 insertions(+), 103 deletions(-) (limited to 'drivers/scsi/g_NCR5380.c') diff --git a/drivers/scsi/g_NCR5380.c b/drivers/scsi/g_NCR5380.c index 90091e693..516bd6c4f 100644 --- a/drivers/scsi/g_NCR5380.c +++ b/drivers/scsi/g_NCR5380.c @@ -18,50 +18,10 @@ * * Added ISAPNP support for DTC436 adapters, * Thomas Sailer, sailer@ife.ee.ethz.ch - */ - -/* - * TODO : flesh out DMA support, find some one actually using this (I have - * a memory mapped Trantor board that works fine) - */ - -/* - * The card is detected and initialized in one of several ways : - * 1. With command line overrides - NCR5380=port,irq may be - * used on the LILO command line to override the defaults. - * - * 2. With the GENERIC_NCR5380_OVERRIDE compile time define. This is - * specified as an array of address, irq, dma, board tuples. Ie, for - * one board at 0x350, IRQ5, no dma, I could say - * -DGENERIC_NCR5380_OVERRIDE={{0xcc000, 5, DMA_NONE, BOARD_NCR5380}} - * - * -1 should be specified for no or DMA interrupt, -2 to autoprobe for an - * IRQ line if overridden on the command line. * - * 3. When included as a module, with arguments passed on the command line: - * ncr_irq=xx the interrupt - * ncr_addr=xx the port or base address (for port or memory - * mapped, resp.) - * ncr_dma=xx the DMA - * ncr_5380=1 to set up for a NCR5380 board - * ncr_53c400=1 to set up for a NCR53C400 board - * e.g. - * modprobe g_NCR5380 ncr_irq=5 ncr_addr=0x350 ncr_5380=1 - * for a port mapped NCR5380 board or - * modprobe g_NCR5380 ncr_irq=255 ncr_addr=0xc8000 ncr_53c400=1 - * for a memory mapped NCR53C400 board with interrupts disabled. - * - * 255 should be specified for no or DMA interrupt, 254 to autoprobe for an - * IRQ line if overridden on the command line. - * + * See Documentation/scsi/g_NCR5380.txt for more info. */ -#define AUTOPROBE_IRQ - -#ifdef CONFIG_SCSI_GENERIC_NCR53C400 -#define PSEUDO_DMA -#endif - #include #include #include @@ -270,7 +230,7 @@ static int __init generic_NCR5380_detect(struct scsi_host_template *tpnt) #ifndef SCSI_G_NCR5380_MEM int i; int port_idx = -1; - unsigned long region_size = 16; + unsigned long region_size; #endif static unsigned int __initdata ncr_53c400a_ports[] = { 0x280, 0x290, 0x300, 0x310, 0x330, 0x340, 0x348, 0x350, 0 @@ -290,6 +250,7 @@ static int __init generic_NCR5380_detect(struct scsi_host_template *tpnt) #ifdef SCSI_G_NCR5380_MEM unsigned long base; void __iomem *iomem; + resource_size_t iomem_size; #endif if (ncr_irq) @@ -350,25 +311,17 @@ static int __init generic_NCR5380_detect(struct scsi_host_template *tpnt) flags = 0; switch (overrides[current_override].board) { case BOARD_NCR5380: - flags = FLAG_NO_PSEUDO_DMA; - break; - case BOARD_NCR53C400: -#ifdef PSEUDO_DMA - flags = FLAG_NO_DMA_FIXUP; -#endif + flags = FLAG_NO_PSEUDO_DMA | FLAG_DMA_FIXUP; break; case BOARD_NCR53C400A: - flags = FLAG_NO_DMA_FIXUP; ports = ncr_53c400a_ports; magic = ncr_53c400a_magic; break; case BOARD_HP_C2502: - flags = FLAG_NO_DMA_FIXUP; ports = ncr_53c400a_ports; magic = hp_c2502_magic; break; case BOARD_DTC3181E: - flags = FLAG_NO_DMA_FIXUP; ports = dtc_3181e_ports; magic = ncr_53c400a_magic; break; @@ -381,20 +334,22 @@ static int __init generic_NCR5380_detect(struct scsi_host_template *tpnt) /* Disable the adapter and look for a free io port */ magic_configure(-1, 0, magic); + region_size = 16; + if (overrides[current_override].NCR5380_map_name != PORT_AUTO) for (i = 0; ports[i]; i++) { - if (!request_region(ports[i], 16, "ncr53c80")) + if (!request_region(ports[i], region_size, "ncr53c80")) continue; if (overrides[current_override].NCR5380_map_name == ports[i]) break; - release_region(ports[i], 16); + release_region(ports[i], region_size); } else for (i = 0; ports[i]; i++) { - if (!request_region(ports[i], 16, "ncr53c80")) + if (!request_region(ports[i], region_size, "ncr53c80")) continue; if (inb(ports[i]) == 0xff) break; - release_region(ports[i], 16); + release_region(ports[i], region_size); } if (ports[i]) { /* At this point we have our region reserved */ @@ -410,17 +365,19 @@ static int __init generic_NCR5380_detect(struct scsi_host_template *tpnt) else { /* Not a 53C400A style setup - just grab */ - if(!(request_region(overrides[current_override].NCR5380_map_name, NCR5380_region_size, "ncr5380"))) + region_size = 8; + if (!request_region(overrides[current_override].NCR5380_map_name, + region_size, "ncr5380")) continue; - region_size = NCR5380_region_size; } #else base = overrides[current_override].NCR5380_map_name; - if (!request_mem_region(base, NCR5380_region_size, "ncr5380")) + iomem_size = NCR53C400_region_size; + if (!request_mem_region(base, iomem_size, "ncr5380")) continue; - iomem = ioremap(base, NCR5380_region_size); + iomem = ioremap(base, iomem_size); if (!iomem) { - release_mem_region(base, NCR5380_region_size); + release_mem_region(base, iomem_size); continue; } #endif @@ -458,6 +415,7 @@ static int __init generic_NCR5380_detect(struct scsi_host_template *tpnt) #else instance->base = overrides[current_override].NCR5380_map_name; hostdata->iomem = iomem; + hostdata->iomem_size = iomem_size; switch (overrides[current_override].board) { case BOARD_NCR53C400: hostdata->c400_ctl_status = 0x100; @@ -472,7 +430,7 @@ static int __init generic_NCR5380_detect(struct scsi_host_template *tpnt) } #endif - if (NCR5380_init(instance, flags)) + if (NCR5380_init(instance, flags | FLAG_LATE_DMA_SETUP)) goto out_unregister; switch (overrides[current_override].board) { @@ -524,7 +482,7 @@ out_release: release_region(overrides[current_override].NCR5380_map_name, region_size); #else iounmap(iomem); - release_mem_region(base, NCR5380_region_size); + release_mem_region(base, iomem_size); #endif return count; } @@ -546,45 +504,18 @@ static int generic_NCR5380_release_resources(struct Scsi_Host *instance) #ifndef SCSI_G_NCR5380_MEM release_region(instance->io_port, instance->n_io_port); #else - iounmap(((struct NCR5380_hostdata *)instance->hostdata)->iomem); - release_mem_region(instance->base, NCR5380_region_size); -#endif - return 0; -} - -#ifdef BIOSPARAM -/** - * generic_NCR5380_biosparam - * @disk: disk to compute geometry for - * @dev: device identifier for this disk - * @ip: sizes to fill in - * - * Generates a BIOS / DOS compatible H-C-S mapping for the specified - * device / size. - * - * XXX Most SCSI boards use this mapping, I could be incorrect. Someone - * using hard disks on a trantor should verify that this mapping - * corresponds to that used by the BIOS / ASPI driver by running the linux - * fdisk program and matching the H_C_S coordinates to what DOS uses. - * - * Locks: none - */ + { + struct NCR5380_hostdata *hostdata = shost_priv(instance); -static int -generic_NCR5380_biosparam(struct scsi_device *sdev, struct block_device *bdev, - sector_t capacity, int *ip) -{ - ip[0] = 64; - ip[1] = 32; - ip[2] = capacity >> 11; + iounmap(hostdata->iomem); + release_mem_region(instance->base, hostdata->iomem_size); + } +#endif return 0; } -#endif - -#ifdef PSEUDO_DMA /** - * NCR5380_pread - pseudo DMA read + * generic_NCR5380_pread - pseudo DMA read * @instance: adapter to read from * @dst: buffer to read into * @len: buffer length @@ -593,7 +524,8 @@ generic_NCR5380_biosparam(struct scsi_device *sdev, struct block_device *bdev, * controller */ -static inline int NCR5380_pread(struct Scsi_Host *instance, unsigned char *dst, int len) +static inline int generic_NCR5380_pread(struct Scsi_Host *instance, + unsigned char *dst, int len) { struct NCR5380_hostdata *hostdata = shost_priv(instance); int blocks = len / 128; @@ -661,7 +593,7 @@ static inline int NCR5380_pread(struct Scsi_Host *instance, unsigned char *dst, } /** - * NCR5380_write - pseudo DMA write + * generic_NCR5380_pwrite - pseudo DMA write * @instance: adapter to read from * @dst: buffer to read into * @len: buffer length @@ -670,7 +602,8 @@ static inline int NCR5380_pread(struct Scsi_Host *instance, unsigned char *dst, * controller */ -static inline int NCR5380_pwrite(struct Scsi_Host *instance, unsigned char *src, int len) +static inline int generic_NCR5380_pwrite(struct Scsi_Host *instance, + unsigned char *src, int len) { struct NCR5380_hostdata *hostdata = shost_priv(instance); int blocks = len / 128; @@ -738,10 +671,15 @@ static inline int NCR5380_pwrite(struct Scsi_Host *instance, unsigned char *src, return 0; } -static int generic_NCR5380_dma_xfer_len(struct scsi_cmnd *cmd) +static int generic_NCR5380_dma_xfer_len(struct Scsi_Host *instance, + struct scsi_cmnd *cmd) { + struct NCR5380_hostdata *hostdata = shost_priv(instance); int transfersize = cmd->transfersize; + if (hostdata->flags & FLAG_NO_PSEUDO_DMA) + return 0; + /* Limit transfers to 32K, for xx400 & xx406 * pseudoDMA that transfers in 128 bytes blocks. */ @@ -756,8 +694,6 @@ static int generic_NCR5380_dma_xfer_len(struct scsi_cmnd *cmd) return transfersize; } -#endif /* PSEUDO_DMA */ - /* * Include the NCR5380 core code that we build our driver around */ @@ -773,7 +709,6 @@ static struct scsi_host_template driver_template = { .queuecommand = generic_NCR5380_queue_command, .eh_abort_handler = generic_NCR5380_abort, .eh_bus_reset_handler = generic_NCR5380_bus_reset, - .bios_param = NCR5380_BIOSPARAM, .can_queue = 16, .this_id = 7, .sg_tablesize = SG_ALL, -- cgit v1.2.3-54-g00ecf