/* * Generic Generic NCR5380 driver * * Copyright 1993, Drew Eckhardt * Visionary Computing * (Unix and Linux consulting and custom programming) * drew@colorado.edu * +1 (303) 440-4894 * * NCR53C400 extensions (c) 1994,1995,1996, Kevin Lentin * K.Lentin@cs.monash.edu.au * * NCR53C400A extensions (c) 1996, Ingmar Baumgart * ingmar@gonzo.schwaben.de * * DTC3181E extensions (c) 1997, Ronald van Cuijlenborg * ronald.van.cuijlenborg@tip.nl or nutty@dds.nl * * 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. * */ #define AUTOPROBE_IRQ #ifdef CONFIG_SCSI_GENERIC_NCR53C400 #define PSEUDO_DMA #endif #include #include #include #include #include "g_NCR5380.h" #include "NCR5380.h" #include #include #include #include static int ncr_irq; static int ncr_dma; static int ncr_addr; static int ncr_5380; static int ncr_53c400; static int ncr_53c400a; static int dtc_3181e; static struct override { NCR5380_map_type NCR5380_map_name; int irq; int dma; int board; /* Use NCR53c400, Ricoh, etc. extensions ? */ } overrides #ifdef GENERIC_NCR5380_OVERRIDE [] __initdata = GENERIC_NCR5380_OVERRIDE; #else [1] __initdata = { { 0,},}; #endif #define NO_OVERRIDES ARRAY_SIZE(overrides) #ifndef MODULE /** * internal_setup - handle lilo command string override * @board: BOARD_* identifier for the board * @str: unused * @ints: numeric parameters * * Do LILO command line initialization of the overrides array. Display * errors when needed * * Locks: none */ static void __init internal_setup(int board, char *str, int *ints) { static int commandline_current; switch (board) { case BOARD_NCR5380: if (ints[0] != 2 && ints[0] != 3) { printk(KERN_ERR "generic_NCR5380_setup : usage ncr5380=" STRVAL(NCR5380_map_name) ",irq,dma\n"); return; } break; case BOARD_NCR53C400: if (ints[0] != 2) { printk(KERN_ERR "generic_NCR53C400_setup : usage ncr53c400=" STRVAL(NCR5380_map_name) ",irq\n"); return; } break; case BOARD_NCR53C400A: if (ints[0] != 2) { printk(KERN_ERR "generic_NCR53C400A_setup : usage ncr53c400a=" STRVAL(NCR5380_map_name) ",irq\n"); return; } break; case BOARD_DTC3181E: if (ints[0] != 2) { printk("generic_DTC3181E_setup : usage dtc3181e=" STRVAL(NCR5380_map_name) ",irq\n"); return; } break; } if (commandline_current < NO_OVERRIDES) { overrides[commandline_current].NCR5380_map_name = (NCR5380_map_type) ints[1]; overrides[commandline_current].irq = ints[2]; if (ints[0] == 3) overrides[commandline_current].dma = ints[3]; else overrides[commandline_current].dma = DMA_NONE; overrides[commandline_current].board = board; ++commandline_current; } } /** * do_NCR53C80_setup - set up entry point * @str: unused * * Setup function invoked at boot to parse the ncr5380= command * line. */ static int __init do_NCR5380_setup(char *str) { int ints[10]; get_options(str, ARRAY_SIZE(ints), ints); internal_setup(BOARD_NCR5380, str, ints); return 1; } /** * do_NCR53C400_setup - set up entry point * @str: unused * @ints: integer parameters from kernel setup code * * Setup function invoked at boot to parse the ncr53c400= command * line. */ static int __init do_NCR53C400_setup(char *str) { int ints[10]; get_options(str, ARRAY_SIZE(ints), ints); internal_setup(BOARD_NCR53C400, str, ints); return 1; } /** * do_NCR53C400A_setup - set up entry point * @str: unused * @ints: integer parameters from kernel setup code * * Setup function invoked at boot to parse the ncr53c400a= command * line. */ static int __init do_NCR53C400A_setup(char *str) { int ints[10]; get_options(str, ARRAY_SIZE(ints), ints); internal_setup(BOARD_NCR53C400A, str, ints); return 1; } /** * do_DTC3181E_setup - set up entry point * @str: unused * @ints: integer parameters from kernel setup code * * Setup function invoked at boot to parse the dtc3181e= command * line. */ static int __init do_DTC3181E_setup(char *str) { int ints[10]; get_options(str, ARRAY_SIZE(ints), ints); internal_setup(BOARD_DTC3181E, str, ints); return 1; } #endif /** * generic_NCR5380_detect - look for NCR5380 controllers * @tpnt: the scsi template * * Scan for the present of NCR5380, NCR53C400, NCR53C400A, DTC3181E * and DTC436(ISAPnP) controllers. If overrides have been set we use * them. * * Locks: none */ static int __init generic_NCR5380_detect(struct scsi_host_template *tpnt) { static int current_override; int count; unsigned int *ports; #ifndef SCSI_G_NCR5380_MEM int i; unsigned long region_size = 16; #endif static unsigned int __initdata ncr_53c400a_ports[] = { 0x280, 0x290, 0x300, 0x310, 0x330, 0x340, 0x348, 0x350, 0 }; static unsigned int __initdata dtc_3181e_ports[] = { 0x220, 0x240, 0x280, 0x2a0, 0x2c0, 0x300, 0x320, 0x340, 0 }; int flags; struct Scsi_Host *instance; struct NCR5380_hostdata *hostdata; #ifdef SCSI_G_NCR5380_MEM unsigned long base; void __iomem *iomem; #endif if (ncr_irq) overrides[0].irq = ncr_irq; if (ncr_dma) overrides[0].dma = ncr_dma; if (ncr_addr) overrides[0].NCR5380_map_name = (NCR5380_map_type) ncr_addr; if (ncr_5380) overrides[0].board = BOARD_NCR5380; else if (ncr_53c400) overrides[0].board = BOARD_NCR53C400; else if (ncr_53c400a) overrides[0].board = BOARD_NCR53C400A; else if (dtc_3181e) overrides[0].board = BOARD_DTC3181E; #ifndef SCSI_G_NCR5380_MEM if (!current_override && isapnp_present()) { struct pnp_dev *dev = NULL; count = 0; while ((dev = pnp_find_dev(NULL, ISAPNP_VENDOR('D', 'T', 'C'), ISAPNP_FUNCTION(0x436e), dev))) { if (count >= NO_OVERRIDES) break; if (pnp_device_attach(dev) < 0) continue; if (pnp_activate_dev(dev) < 0) { printk(KERN_ERR "dtc436e probe: activate failed\n"); pnp_device_detach(dev); continue; } if (!pnp_port_valid(dev, 0)) { printk(KERN_ERR "dtc436e probe: no valid port\n"); pnp_device_detach(dev); continue; } if (pnp_irq_valid(dev, 0)) overrides[count].irq = pnp_irq(dev, 0); else overrides[count].irq = NO_IRQ; if (pnp_dma_valid(dev, 0)) overrides[count].dma = pnp_dma(dev, 0); else overrides[count].dma = DMA_NONE; overrides[count].NCR5380_map_name = (NCR5380_map_type) pnp_port_start(dev, 0); overrides[count].board = BOARD_DTC3181E; count++; } } #endif for (count = 0; current_override < NO_OVERRIDES; ++current_override) { if (!(overrides[current_override].NCR5380_map_name)) continue; ports = NULL; 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 break; case BOARD_NCR53C400A: flags = FLAG_NO_DMA_FIXUP; ports = ncr_53c400a_ports; break; case BOARD_DTC3181E: flags = FLAG_NO_DMA_FIXUP; ports = dtc_3181e_ports; break; } #ifndef SCSI_G_NCR5380_MEM if (ports) { /* wakeup sequence for the NCR53C400A and DTC3181E */ /* Disable the adapter and look for a free io port */ outb(0x59, 0x779); outb(0xb9, 0x379); outb(0xc5, 0x379); outb(0xae, 0x379); outb(0xa6, 0x379); outb(0x00, 0x379); if (overrides[current_override].NCR5380_map_name != PORT_AUTO) for (i = 0; ports[i]; i++) { if (!request_region(ports[i], 16, "ncr53c80")) continue; if (overrides[current_override].NCR5380_map_name == ports[i]) break; release_region(ports[i], 16); } else for (i = 0; ports[i]; i++) { if (!request_region(ports[i], 16, "ncr53c80")) continue; if (inb(ports[i]) == 0xff) break; release_region(ports[i], 16); } if (ports[i]) { /* At this point we have our region reserved */ outb(0x59, 0x779); outb(0xb9, 0x379); outb(0xc5, 0x379); outb(0xae, 0x379); outb(0xa6, 0x379); outb(0x80 | i, 0x379); /* set io port to be used */ outb(0xc0, ports[i] + 9); if (inb(ports[i] + 9) != 0x80) continue; else overrides[current_override].NCR5380_map_name = ports[i]; } else continue; } else { /* Not a 53C400A style setup - just grab */ if(!(request_region(overrides[current_override].NCR5380_map_name, NCR5380_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")) continue; iomem = ioremap(base, NCR5380_region_size); if (!iomem) { release_mem_region(base, NCR5380_region_size); continue; } #endif instance = scsi_register(tpnt, sizeof(struct NCR5380_hostdata)); if (instance == NULL) goto out_release; hostdata = shost_priv(instance); #ifndef SCSI_G_NCR5380_MEM instance->io_port = overrides[current_override].NCR5380_map_name; instance->n_io_port = region_size; hostdata->io_width = 1; /* 8-bit PDMA by default */ /* * On NCR53C400 boards, NCR5380 registers are mapped 8 past * the base address. */ switch (overrides[current_override].board) { case BOARD_NCR53C400: instance->io_port += 8; hostdata->c400_ctl_status = 0; hostdata->c400_blk_cnt = 1; hostdata->c400_host_buf = 4; break; case BOARD_DTC3181E: hostdata->io_width = 2; /* 16-bit PDMA */ /* fall through */ case BOARD_NCR53C400A: hostdata->c400_ctl_status = 9; hostdata->c400_blk_cnt = 10; hostdata->c400_host_buf = 8; break; } #else instance->base = overrides[current_override].NCR5380_map_name; hostdata->iomem = iomem; switch (overrides[current_override].board) { case BOARD_NCR53C400: hostdata->c400_ctl_status = 0x100; hostdata->c400_blk_cnt = 0x101; hostdata->c400_host_buf = 0x104; break; case BOARD_DTC3181E: case BOARD_NCR53C400A: pr_err(DRV_MODULE_NAME ": unknown register offsets\n"); goto out_unregister; } #endif if (NCR5380_init(instance, flags)) goto out_unregister; switch (overrides[current_override].board) { case BOARD_NCR53C400: case BOARD_DTC3181E: case BOARD_NCR53C400A: NCR5380_write(hostdata->c400_ctl_status, CSR_BASE); } NCR5380_maybe_reset_bus(instance); if (overrides[current_override].irq != IRQ_AUTO) instance->irq = overrides[current_override].irq; else instance->irq = NCR5380_probe_irq(instance, 0xffff); /* Compatibility with documented NCR5380 kernel parameters */ if (instance->irq == 255) instance->irq = NO_IRQ; if (instance->irq != NO_IRQ) if (request_irq(instance->irq, generic_NCR5380_intr, 0, "NCR5380", instance)) { printk(KERN_WARNING "scsi%d : IRQ%d not free, interrupts disabled\n", instance->host_no, instance->irq); instance->irq = NO_IRQ; } if (instance->irq == NO_IRQ) { printk(KERN_INFO "scsi%d : interrupts not enabled. for better interactive performance,\n", instance->host_no); printk(KERN_INFO "scsi%d : please jumper the board for a free IRQ.\n", instance->host_no); } ++current_override; ++count; } return count; out_unregister: scsi_unregister(instance); out_release: #ifndef SCSI_G_NCR5380_MEM release_region(overrides[current_override].NCR5380_map_name, region_size); #else iounmap(iomem); release_mem_region(base, NCR5380_region_size); #endif return count; } /** * generic_NCR5380_release_resources - free resources * @instance: host adapter to clean up * * Free the generic interface resources from this adapter. * * Locks: none */ static int generic_NCR5380_release_resources(struct Scsi_Host *instance) { if (instance->irq != NO_IRQ) free_irq(instance->irq, instance); NCR5380_exit(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 */ 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; return 0; } #endif #ifdef PSEUDO_DMA /** * NCR5380_pread - pseudo DMA read * @instance: adapter to read from * @dst: buffer to read into * @len: buffer length * * Perform a pseudo DMA mode read from an NCR53C400 or equivalent * controller */ static inline int NCR5380_pread(struct Scsi_Host *instance, unsigned char *dst, int len) { struct NCR5380_hostdata *hostdata = shost_priv(instance); int blocks = len / 128; int start = 0; NCR5380_write(hostdata->c400_ctl_status, CSR_BASE | CSR_TRANS_DIR); NCR5380_write(hostdata->c400_blk_cnt, blocks); while (1) { if (NCR5380_read(hostdata->c400_blk_cnt) == 0) break; if (NCR5380_read(hostdata->c400_ctl_status) & CSR_GATED_53C80_IRQ) { printk(KERN_ERR "53C400r: Got 53C80_IRQ start=%d, blocks=%d\n", start, blocks); return -1; } while (NCR5380_read(hostdata->c400_ctl_status) & CSR_HOST_BUF_NOT_RDY) ; /* FIXME - no timeout */ #ifndef SCSI_G_NCR5380_MEM if (hostdata->io_width == 2) insw(instance->io_port + hostdata->c400_host_buf, dst + start, 64); else insb(instance->io_port + hostdata->c400_host_buf, dst + start, 128); #else /* implies SCSI_G_NCR5380_MEM */ memcpy_fromio(dst + start, hostdata->iomem + NCR53C400_host_buffer, 128); #endif start += 128; blocks--; } if (blocks) { while (NCR5380_read(hostdata->c400_ctl_status) & CSR_HOST_BUF_NOT_RDY) ; /* FIXME - no timeout */ #ifndef SCSI_G_NCR5380_MEM if (hostdata->io_width == 2) insw(instance->io_port + hostdata->c400_host_buf, dst + start, 64); else insb(instance->io_port + hostdata->c400_host_buf, dst + start, 128); #else /* implies SCSI_G_NCR5380_MEM */ memcpy_fromio(dst + start, hostdata->iomem + NCR53C400_host_buffer, 128); #endif start += 128; blocks--; } if (!(NCR5380_read(hostdata->c400_ctl_status) & CSR_GATED_53C80_IRQ)) printk("53C400r: no 53C80 gated irq after transfer"); #if 0 /* * DON'T DO THIS - THEY NEVER ARRIVE! */ printk("53C400r: Waiting for 53C80 registers\n"); while (NCR5380_read(hostdata->c400_ctl_status) & CSR_53C80_REG) ; #endif if (!(NCR5380_read(BUS_AND_STATUS_REG) & BASR_END_DMA_TRANSFER)) printk(KERN_ERR "53C400r: no end dma signal\n"); return 0; } /** * NCR5380_write - pseudo DMA write * @instance: adapter to read from * @dst: buffer to read into * @len: buffer length * * Perform a pseudo DMA mode read from an NCR53C400 or equivalent * controller */ static inline int NCR5380_pwrite(struct Scsi_Host *instance, unsigned char *src, int len) { struct NCR5380_hostdata *hostdata = shost_priv(instance); int blocks = len / 128; int start = 0; int i; NCR5380_write(hostdata->c400_ctl_status, CSR_BASE); NCR5380_write(hostdata->c400_blk_cnt, blocks); while (1) { if (NCR5380_read(hostdata->c400_ctl_status) & CSR_GATED_53C80_IRQ) { printk(KERN_ERR "53C400w: Got 53C80_IRQ start=%d, blocks=%d\n", start, blocks); return -1; } if (NCR5380_read(hostdata->c400_blk_cnt) == 0) break; while (NCR5380_read(hostdata->c400_ctl_status) & CSR_HOST_BUF_NOT_RDY) ; // FIXME - timeout #ifndef SCSI_G_NCR5380_MEM if (hostdata->io_width == 2) outsw(instance->io_port + hostdata->c400_host_buf, src + start, 64); else outsb(instance->io_port + hostdata->c400_host_buf, src + start, 128); #else /* implies SCSI_G_NCR5380_MEM */ memcpy_toio(hostdata->iomem + NCR53C400_host_buffer, src + start, 128); #endif start += 128; blocks--; } if (blocks) { while (NCR5380_read(hostdata->c400_ctl_status) & CSR_HOST_BUF_NOT_RDY) ; // FIXME - no timeout #ifndef SCSI_G_NCR5380_MEM if (hostdata->io_width == 2) outsw(instance->io_port + hostdata->c400_host_buf, src + start, 64); else outsb(instance->io_port + hostdata->c400_host_buf, src + start, 128); #else /* implies SCSI_G_NCR5380_MEM */ memcpy_toio(hostdata->iomem + NCR53C400_host_buffer, src + start, 128); #endif start += 128; blocks--; } #if 0 printk("53C400w: waiting for registers to be available\n"); THEY NEVER DO ! while (NCR5380_read(hostdata->c400_ctl_status) & CSR_53C80_REG); printk("53C400w: Got em\n"); #endif /* Let's wait for this instead - could be ugly */ /* All documentation says to check for this. Maybe my hardware is too * fast. Waiting for it seems to work fine! KLL */ while (!(i = NCR5380_read(hostdata->c400_ctl_status) & CSR_GATED_53C80_IRQ)) { udelay(4); /* DTC436 chip hangs without this */ /* FIXME - no timeout */ } /* * I know. i is certainly != 0 here but the loop is new. See previous * comment. */ if (i) { if (!((i = NCR5380_read(BUS_AND_STATUS_REG)) & BASR_END_DMA_TRANSFER)) printk(KERN_ERR "53C400w: No END OF DMA bit - WHOOPS! BASR=%0x\n", i); } else printk(KERN_ERR "53C400w: no 53C80 gated irq after transfer (last block)\n"); #if 0 if (!(NCR5380_read(BUS_AND_STATUS_REG) & BASR_END_DMA_TRANSFER)) { printk(KERN_ERR "53C400w: no end dma signal\n"); } #endif while (!(NCR5380_read(TARGET_COMMAND_REG) & TCR_LAST_BYTE_SENT)) ; // TIMEOUT return 0; } static int generic_NCR5380_dma_xfer_len(struct scsi_cmnd *cmd) { int transfersize = cmd->transfersize; /* Limit transfers to 32K, for xx400 & xx406 * pseudoDMA that transfers in 128 bytes blocks. */ if (transfersize > 32 * 1024 && cmd->SCp.this_residual && !(cmd->SCp.this_residual % transfersize)) transfersize = 32 * 1024; /* 53C400 datasheet: non-modulo-128-byte transfers should use PIO */ if (transfersize % 128) transfersize = 0; return transfersize; } #endif /* PSEUDO_DMA */ /* * Include the NCR5380 core code that we build our driver around */ #include "NCR5380.c" static struct scsi_host_template driver_template = { .proc_name = DRV_MODULE_NAME, .name = "Generic NCR5380/NCR53C400 SCSI", .detect = generic_NCR5380_detect, .release = generic_NCR5380_release_resources, .info = generic_NCR5380_info, .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, .cmd_per_lun = 2, .use_clustering = DISABLE_CLUSTERING, .cmd_size = NCR5380_CMD_SIZE, .max_sectors = 128, }; #include "scsi_module.c" module_param(ncr_irq, int, 0); module_param(ncr_dma, int, 0); module_param(ncr_addr, int, 0); module_param(ncr_5380, int, 0); module_param(ncr_53c400, int, 0); module_param(ncr_53c400a, int, 0); module_param(dtc_3181e, int, 0); MODULE_LICENSE("GPL"); #if !defined(SCSI_G_NCR5380_MEM) && defined(MODULE) static struct isapnp_device_id id_table[] = { { ISAPNP_ANY_ID, ISAPNP_ANY_ID, ISAPNP_VENDOR('D', 'T', 'C'), ISAPNP_FUNCTION(0x436e), 0}, {0} }; MODULE_DEVICE_TABLE(isapnp, id_table); #endif __setup("ncr5380=", do_NCR5380_setup); __setup("ncr53c400=", do_NCR53C400_setup); __setup("ncr53c400a=", do_NCR53C400A_setup); __setup("dtc3181e=", do_DTC3181E_setup);