--- linux/drivers/scsi/pcmcia/Kconfig.orig Fri Apr 16 16:00:41 2004 +++ linux/drivers/scsi/pcmcia/Kconfig Fri Apr 9 20:17:36 2004 @@ -69,4 +69,14 @@ To compile this driver as a module, choose M here: the module will be called qlogic_cs. +config PCMCIA_SYM53C500 + tristate "Symbios 53c500 PCMCIA support" + depends on m + help + Say Y here if you have a New Media Bus Toaster or other PCMCIA + SCSI adapter based on the Symbios 53c500 controller. + + To compile this driver as a module, choose M here: the + module will be called sym53c500_cs. + endmenu --- linux/drivers/scsi/pcmcia/Makefile.orig Fri Apr 16 16:00:41 2004 +++ linux/drivers/scsi/pcmcia/Makefile Fri Apr 16 20:23:44 2004 @@ -6,6 +6,7 @@ obj-$(CONFIG_PCMCIA_FDOMAIN) += fdomain_cs.o obj-$(CONFIG_PCMCIA_AHA152X) += aha152x_cs.o obj-$(CONFIG_PCMCIA_NINJA_SCSI) += nsp_cs.o +obj-$(CONFIG_PCMCIA_SYM53C500) += sym53c500_cs.o aha152x_cs-objs := aha152x_stub.o aha152x_core.o fdomain_cs-objs := fdomain_stub.o fdomain_core.o --- linux/drivers/scsi/pcmcia/sym53c500_cs.c.orig Fri Apr 16 16:05:19 2004 +++ linux/drivers/scsi/pcmcia/sym53c500_cs.c Tue Apr 20 10:54:55 2004 @@ -0,0 +1,1150 @@ +/* +* sym53c500_cs.c Bob Tracy (rct@frus.com) +* +* A rewrite of the pcmcia-cs add-on driver for newer (circa 1997) +* New Media Bus Toaster PCMCIA SCSI cards using the Symbios Logic +* 53c500 controller. For inclusion in the 2.6 and later kernel +* source trees. The pcmcia-cs add-on version of this driver is +* not supported beyond 2.4. +* +* The rewrite was long overdue, and the 2.6 kernel forced the issue. +* All the USE_BIOS code has been ripped out. It was never used, and +* could not have worked anyway. USE_DMA has gone bye-bye too. +* +* The original pcmcia-cs add-on driver consisted of three files +* with history/copyright information as follows: +* +* SYM53C500.h +* Bob Tracy (rct@frus.com) +* Original by Tom Corner (tcorner@via.at). +* Adapted from NCR53c406a.h which is Copyrighted (C) 1994 +* Normunds Saumanis (normunds@rx.tech.swh.lv) +* +* SYM53C500.c +* Bob Tracy (rct@frus.com) +* Original driver by Tom Corner (tcorner@via.at) was adapted +* from NCR53c406a.c which is Copyrighted (C) 1994, 1995, 1996 +* Normunds Saumanis (normunds@fi.ibm.com) +* +* sym53c500.c +* Bob Tracy (rct@frus.com) +* Original by Tom Corner (tcorner@via.at) was adapted from a +* driver for the Qlogic SCSI card written by +* David Hinds (dhinds@allegro.stanford.edu). +* +* This program is free software; you can redistribute it and/or modify it +* under the terms of the GNU General Public License as published by the +* Free Software Foundation; either version 2, or (at your option) any +* later version. +* +* This program is distributed in the hope that it will be useful, but +* WITHOUT ANY WARRANTY; without even the implied warranty of +* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +* General Public License for more details. +*/ + +#define SYM53C500_DEBUG 0 +#define VERBOSE_SYM53C500_DEBUG 0 + +/* Set this to 0 if you encounter kernel lockups while transferring + * data in PIO mode */ +#define USE_FAST_PIO 1 + +/* =============== End of user configurable parameters ============== */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include +#include +#include +#include +#include + +#include +#include +#include +#include +#include +#include + +/* A useful macro... */ +#define MIN(a, b) ((a) > (b) ? (b) : (a)) + +#ifndef NULL +#define NULL 0 +#endif + +/* Function prototypes. */ +const char *SYM53C500_info(struct Scsi_Host *); +int SYM53C500_queue(struct scsi_cmnd *, void (*done)(struct scsi_cmnd *)); +int SYM53C500_abort(struct scsi_cmnd *); +int SYM53C500_device_reset(struct scsi_cmnd *); +int SYM53C500_bus_reset(struct scsi_cmnd *); +int SYM53C500_host_reset(struct scsi_cmnd *); +int SYM53C500_biosparm(struct scsi_device *, struct block_device *, sector_t, int *); +int SYM53C500_proc_info(struct Scsi_Host *, char *, char **, off_t, int, int); + +/* Static function prototypes */ +static dev_link_t *SYM53C500_attach(void); +static void SYM53C500_config(dev_link_t *); +static void SYM53C500_detach(dev_link_t *); +static int SYM53C500_event(event_t event, int priority, event_callback_args_t *args); +static void SYM53C500_intr(int, void *, struct pt_regs *); +static void SYM53C500_release(dev_link_t *link); +static void chip_init(void); +static void calc_port_addr(void); +static irqreturn_t do_SYM53C500_intr(int, void *, struct pt_regs *); + +/* ================================================================== */ + +#ifdef PCMCIA_DEBUG +static int pc_debug = PCMCIA_DEBUG; +MODULE_PARM(pc_debug, "i"); +#define DEBUG(n, args...) if (pc_debug>(n)) printk(KERN_DEBUG args) +static char *version = +"sym53c500_cs.c 0.7 2004/04/01 14:15:58 (Bob Tracy)"; +#else +#define DEBUG(n, args...) +#endif + +/* ================================================================== */ + +/* Parameters that can be set with 'insmod' */ + +/* Bit map of interrupts to choose from */ +static unsigned int irq_mask = 0xdeb8; /* 3, 6, 7, 9-12, 14, 15 */ +static int irq_list[4] = { -1 }; + +MODULE_PARM(irq_mask, "i"); +MODULE_PARM(irq_list, "1-4i"); + +/* ================================================================== */ + +#define SYNC_MODE 0 /* Synchronous transfer mode */ + +/* Default configuration */ +#define C1_IMG 0x07 /* ID=7 */ +#define C2_IMG 0x48 /* FE SCSI2 */ +#define C3_IMG 0x20 /* CDB */ +#define C4_IMG 0x04 /* ANE */ +#define C5_IMG 0xa4 /*? changed from b6= AA PI SIE POL */ +#define C7_IMG 0x80 /* added for SYM53C500 t. corner */ + +#define REG0 (outb(C4_IMG, CONFIG4)) /* select register set 0 */ +#define REG1 outb(C7_IMG, CONFIG7); outb(C5_IMG, CONFIG5) /* select register set 1 */ + +#if SYM53C500_DEBUG +#define DEB(x) x +#else +#define DEB(x) +#endif + +#if VERBOSE_SYM53C500_DEBUG +#define VDEB(x) x +#else +#define VDEB(x) +#endif + +#define LOAD_DMA_COUNT(count) \ + outb(count & 0xff, TC_LSB); \ + outb((count >> 8) & 0xff, TC_MSB); \ + outb((count >> 16) & 0xff, TC_HIGH); + +/* Chip commands */ +#define DMA_OP 0x80 + +#define SCSI_NOP 0x00 +#define FLUSH_FIFO 0x01 +#define CHIP_RESET 0x02 +#define SCSI_RESET 0x03 +#define RESELECT 0x40 +#define SELECT_NO_ATN 0x41 +#define SELECT_ATN 0x42 +#define SELECT_ATN_STOP 0x43 +#define ENABLE_SEL 0x44 +#define DISABLE_SEL 0x45 +#define SELECT_ATN3 0x46 +#define RESELECT3 0x47 +#define TRANSFER_INFO 0x10 +#define INIT_CMD_COMPLETE 0x11 +#define MSG_ACCEPT 0x12 +#define TRANSFER_PAD 0x18 +#define SET_ATN 0x1a +#define RESET_ATN 0x1b +#define SEND_MSG 0x20 +#define SEND_STATUS 0x21 +#define SEND_DATA 0x22 +#define DISCONN_SEQ 0x23 +#define TERMINATE_SEQ 0x24 +#define TARG_CMD_COMPLETE 0x25 +#define DISCONN 0x27 +#define RECV_MSG 0x28 +#define RECV_CMD 0x29 +#define RECV_DATA 0x2a +#define RECV_CMD_SEQ 0x2b +#define TARGET_ABORT_DMA 0x04 + +/* ================================================================== */ + +/* +* the following will set the monitor border color +* (useful to find where things crash or get stuck) +* +* 1 = blue +* 2 = green +* 3 = cyan +* 4 = red +* 5 = magenta +* 6 = yellow +* 7 = white +*/ + +#if SYM53C500_DEBUG +#define rtrc(i) {inb(0x3da);outb(0x31,0x3c0);outb((i),0x3c0);} +#else +#define rtrc(i) {} +#endif + +/* ================================================================== */ + +typedef struct scsi_info_t { + dev_link_t link; + dev_node_t node; + struct Scsi_Host *host; + unsigned short manf_id; +} scsi_info_t; + +enum Phase { + idle, + data_out, + data_in, + command_ph, + status_ph, + message_out, + message_in +}; + +/* ================================================================== */ + +/* +* Global (within this module) variables. +*/ + +/* +* scsi_host_template initializer +* +* Include file defining structure implies proc_info is optional. +* Trouble is, directory for host adapter won't get created unless +* there's a proc_info routine, i.e., nothing will appear in /proc. +* This is different from the 2.4 implementation. +*/ +static struct scsi_host_template sym53c500_driver_template = { + .module = THIS_MODULE, + .name = "SYM53C500", + .info = SYM53C500_info, + .queuecommand = SYM53C500_queue, + .eh_abort_handler = SYM53C500_abort, + .eh_device_reset_handler = SYM53C500_device_reset, + .eh_bus_reset_handler = SYM53C500_bus_reset, + .eh_host_reset_handler = SYM53C500_host_reset, + .bios_param = SYM53C500_biosparm, + .proc_info = SYM53C500_proc_info, + .proc_name = "SYM53C500", + .can_queue = 1, + .this_id = 7, + .sg_tablesize = 32, + .cmd_per_lun = 1, + .use_clustering = ENABLE_CLUSTERING +}; + +static int port_base = 0; +static int irq_level = -1; /* 0 is 'no irq', so use -1 for 'uninitialized'*/ + +static int fast_pio = USE_FAST_PIO; + +static struct scsi_cmnd *current_SC; +static char info_msg[256]; + +/* +* possible i/o port addresses: provided for informational purposes only, +* because if Card Services can't find the card, the card doesn't exist. +* +* 0x130, 0x230, 0x280, 0x290, 0x320, 0x330, 0x340, 0x350 +*/ + +/* Control Register Set 0 */ +static int TC_LSB; /* transfer counter lsb */ +static int TC_MSB; /* transfer counter msb */ +static int SCSI_FIFO; /* scsi fifo register */ +static int CMD_REG; /* command register */ +static int STAT_REG; /* status register */ +static int DEST_ID; /* selection/reselection bus id */ +static int INT_REG; /* interrupt status register */ +static int SRTIMOUT; /* select/reselect timeout reg */ +static int SEQ_REG; /* sequence step register */ +static int SYNCPRD; /* synchronous transfer period */ +static int FIFO_FLAGS; /* indicates # of bytes in fifo */ +static int SYNCOFF; /* synchronous offset register */ +static int CONFIG1; /* configuration register */ +static int CLKCONV; /* clock conversion reg */ +/*static int TESTREG;*/ /* test mode register */ +static int CONFIG2; /* Configuration 2 Register */ +static int CONFIG3; /* Configuration 3 Register */ +static int CONFIG4; /* Configuration 4 Register */ +static int TC_HIGH; /* Transfer Counter High */ +/*static int FIFO_BOTTOM;*/ /* Reserve FIFO byte register */ + +/* Control Register Set 1 */ +/*static int JUMPER_SENSE;*/ /* Jumper sense port reg (r/w) */ +/*static int SRAM_PTR;*/ /* SRAM address pointer reg (r/w) */ +/*static int SRAM_DATA;*/ /* SRAM data register (r/w) */ +static int PIO_FIFO; /* PIO FIFO registers (r/w) */ +/*static int PIO_FIFO1;*/ /* */ +/*static int PIO_FIFO2;*/ /* */ +/*static int PIO_FIFO3;*/ /* */ +static int PIO_STATUS; /* PIO status (r/w) */ +/*static int ATA_CMD;*/ /* ATA command/status reg (r/w) */ +/*static int ATA_ERR;*/ /* ATA features/error register (r/w)*/ +static int PIO_FLAG; /* PIO flag interrupt enable (r/w) */ +static int CONFIG5; /* Configuration 5 register (r/w) */ +/*static int SIGNATURE;*/ /* Signature Register (r) */ +/*static int CONFIG6;*/ /* Configuration 6 register (r) */ +static int CONFIG7; + +static dev_link_t *dev_list = NULL; +static dev_info_t dev_info = "sym53c500_cs"; + +/* ================================================================== */ + +static dev_link_t * +SYM53C500_attach(void) +{ + scsi_info_t *info; + client_reg_t client_reg; + dev_link_t *link; + int i, ret; + + DEBUG(0, "SYM53C500_attach()\n"); + + /* Create new SCSI device */ + info = kmalloc(sizeof(*info), GFP_KERNEL); + if (!info) + return NULL; + memset(info, 0, sizeof(*info)); + link = &info->link; + link->priv = info; + link->io.NumPorts1 = 16; + link->io.Attributes1 = IO_DATA_PATH_WIDTH_AUTO; + link->io.IOAddrLines = 10; + link->irq.Attributes = IRQ_TYPE_EXCLUSIVE; + link->irq.IRQInfo1 = IRQ_INFO2_VALID | IRQ_LEVEL_ID; + if (irq_list[0] == -1) + link->irq.IRQInfo2 = irq_mask; + else + for (i = 0; i < 4; i++) + link->irq.IRQInfo2 |= 1 << irq_list[i]; + link->conf.Attributes = CONF_ENABLE_IRQ; + link->conf.Vcc = 50; + link->conf.IntType = INT_MEMORY_AND_IO; + link->conf.Present = PRESENT_OPTION; + + /* Register with Card Services */ + link->next = dev_list; + dev_list = link; + client_reg.dev_info = &dev_info; + client_reg.Attributes = INFO_IO_CLIENT | INFO_CARD_SHARE; + client_reg.event_handler = &SYM53C500_event; + client_reg.EventMask = CS_EVENT_RESET_REQUEST | CS_EVENT_CARD_RESET | + CS_EVENT_CARD_INSERTION | CS_EVENT_CARD_REMOVAL | + CS_EVENT_PM_SUSPEND | CS_EVENT_PM_RESUME; + client_reg.Version = 0x0210; + client_reg.event_callback_args.client_data = link; + ret = pcmcia_register_client(&link->handle, &client_reg); + if (ret != 0) { + cs_error(link->handle, RegisterClient, ret); + SYM53C500_detach(link); + return NULL; + } + + return link; +} /* SYM53C500_attach */ + +static void +SYM53C500_detach(dev_link_t *link) +{ + dev_link_t **linkp; + + DEBUG(0, "SYM53C500_detach(0x%p)\n", link); + + /* Locate device structure */ + for (linkp = &dev_list; *linkp; linkp = &(*linkp)->next) + if (*linkp == link) + break; + if (*linkp == NULL) + return; + + if (link->state & DEV_CONFIG) + SYM53C500_release(link); + + if (link->handle) + pcmcia_deregister_client(link->handle); + + /* Unlink device structure, free bits. */ + *linkp = link->next; + kfree(link->priv); + link->priv = NULL; +} /* SYM53C500_detach */ + +#define CS_CHECK(fn, ret) \ +do { last_fn = (fn); if ((last_ret = (ret)) != 0) goto cs_failed; } while (0) + +static void +SYM53C500_config(dev_link_t *link) +{ + client_handle_t handle = link->handle; + scsi_info_t *info = link->priv; + tuple_t tuple; + cisparse_t parse; + int i, last_ret, last_fn; + unsigned short tuple_data[32]; + struct Scsi_Host *host; + struct scsi_host_template *tpnt = &sym53c500_driver_template; + + DEBUG(0, "SYM53C500_config(0x%p)\n", link); + + tuple.TupleData = (cisdata_t *)tuple_data; + tuple.TupleDataMax = 64; + tuple.TupleOffset = 0; + tuple.DesiredTuple = CISTPL_CONFIG; + CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(handle, &tuple)); + CS_CHECK(GetTupleData, pcmcia_get_tuple_data(handle, &tuple)); + CS_CHECK(ParseTuple, pcmcia_parse_tuple(handle, &tuple, &parse)); + link->conf.ConfigBase = parse.config.base; + + tuple.DesiredTuple = CISTPL_MANFID; + if ((pcmcia_get_first_tuple(handle, &tuple) == CS_SUCCESS) && + (pcmcia_get_tuple_data(handle, &tuple) == CS_SUCCESS)) + info->manf_id = le16_to_cpu(tuple.TupleData[0]); + + /* Configure card */ + link->state |= DEV_CONFIG; + + tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY; + CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(handle, &tuple)); + while (1) { + if (pcmcia_get_tuple_data(handle, &tuple) != 0 || + pcmcia_parse_tuple(handle, &tuple, &parse) != 0) + goto next_entry; + link->conf.ConfigIndex = parse.cftable_entry.index; + link->io.BasePort1 = parse.cftable_entry.io.win[0].base; + link->io.NumPorts1 = parse.cftable_entry.io.win[0].len; + + if (link->io.BasePort1 != 0) { + i = pcmcia_request_io(handle, &link->io); + if (i == CS_SUCCESS) + break; + } +next_entry: + CS_CHECK(GetNextTuple, pcmcia_get_next_tuple(handle, &tuple)); + } + + CS_CHECK(RequestIRQ, pcmcia_request_irq(handle, &link->irq)); + CS_CHECK(RequestConfiguration, pcmcia_request_configuration(handle, &link->conf)); + + /* + * That's the trouble with copying liberally from another driver. + * Some things probably aren't relevant, and I suspect this entire + * section dealing with manufacturer IDs can be scrapped. --rct + */ + if ((info->manf_id == MANFID_MACNICA) || + (info->manf_id == MANFID_PIONEER) || + (info->manf_id == 0x0098)) { + /* set ATAcmd */ + outb(0xb4, link->io.BasePort1 + 0xd); + outb(0x24, link->io.BasePort1 + 0x9); + outb(0x04, link->io.BasePort1 + 0xd); + } + + /* + * Note fast_pio is global and set at compile time. + */ + port_base = link->io.BasePort1; + irq_level = link->irq.AssignedIRQ; + + DEB(printk("SYM53C500: port_base=0x%X, irq=%d, fast_pio=%d\n", + port_base, irq_level, fast_pio);) + + calc_port_addr(); + chip_init(); + + host = scsi_host_alloc(tpnt, 0); + if (!host) { + printk("SYM53C500: Unable to register host, giving up.\n"); + goto err_release; + } + + if (irq_level > 0) { + if (request_irq(irq_level, do_SYM53C500_intr, 0, "SYM53C500", host)) { + printk("SYM53C500: unable to allocate IRQ %d\n", irq_level); + goto err_free_scsi; + } + tpnt->can_queue = 1; + DEB(printk("SYM53C500: allocated IRQ %d\n", irq_level)); + } else if (irq_level == 0) { + tpnt->can_queue = 0; + DEB(printk("SYM53C500: No interrupts detected\n")); + goto err_free_scsi; + } else { + DEB(printk("SYM53C500: Shouldn't get here!\n")); + goto err_free_scsi; + } + + host->unique_id = port_base; + host->irq = irq_level; + host->io_port = port_base; + host->n_io_port = 0x10; + host->dma_channel = -1; + + sprintf(info_msg, "SYM53C500 at 0x%x, IRQ %d, %s PIO mode.", + port_base, irq_level, fast_pio ? "fast" : "slow"); + + sprintf(info->node.dev_name, "scsi%d", host->host_no); + link->dev = &info->node; + info->host = host; + + scsi_add_host(host, NULL); /* XXX handle failure */ + scsi_scan_host(host); + + goto out; /* SUCCESS */ + +err_free_scsi: + scsi_host_put(host); +err_release: + release_region(port_base, 0x10); + printk(KERN_INFO "sym53c500_cs: no SCSI devices found\n"); + +out: + link->state &= ~DEV_CONFIG_PENDING; + return; + +cs_failed: + cs_error(link->handle, last_fn, last_ret); + SYM53C500_release(link); + return; +} /* SYM53C500_config */ + +static void +SYM53C500_release(dev_link_t *link) +{ + scsi_info_t *info = link->priv; + struct Scsi_Host *shost = info->host; + + DEBUG(0, "SYM53C500_release(0x%p)\n", link); + + /* + * Interrupts getting hosed on card removal. Try + * the following code, mostly from qlogicfas.c. + */ + if (shost->irq) + free_irq(shost->irq, shost); + if (shost->dma_channel != 0xff) + free_dma(shost->dma_channel); + if (shost->io_port && shost->n_io_port) + release_region(shost->io_port, shost->n_io_port); + + scsi_remove_host(shost); + link->dev = NULL; + + pcmcia_release_configuration(link->handle); + pcmcia_release_io(link->handle, &link->io); + pcmcia_release_irq(link->handle, &link->irq); + + link->state &= ~DEV_CONFIG; + + scsi_host_put(shost); +} /* SYM53C500_release */ + +static int +SYM53C500_event(event_t event, int priority, event_callback_args_t *args) +{ + dev_link_t *link = args->client_data; + scsi_info_t *info = link->priv; + + DEBUG(1, "SYM53C500_event(0x%06x)\n", event); + + switch (event) { + case CS_EVENT_CARD_REMOVAL: + link->state &= ~DEV_PRESENT; + if (link->state & DEV_CONFIG) + SYM53C500_release(link); + break; + case CS_EVENT_CARD_INSERTION: + link->state |= DEV_PRESENT | DEV_CONFIG_PENDING; + SYM53C500_config(link); + break; + case CS_EVENT_PM_SUSPEND: + link->state |= DEV_SUSPEND; + /* Fall through... */ + case CS_EVENT_RESET_PHYSICAL: + if (link->state & DEV_CONFIG) + pcmcia_release_configuration(link->handle); + break; + case CS_EVENT_PM_RESUME: + link->state &= ~DEV_SUSPEND; + /* Fall through... */ + case CS_EVENT_CARD_RESET: + if (link->state & DEV_CONFIG) { + pcmcia_request_configuration(link->handle, &link->conf); + /* See earlier comment about manufacturer IDs. */ + if ((info->manf_id == MANFID_MACNICA) || + (info->manf_id == MANFID_PIONEER) || + (info->manf_id == 0x0098)) { + outb(0x80, link->io.BasePort1 + 0xd); + outb(0x24, link->io.BasePort1 + 0x9); + outb(0x04, link->io.BasePort1 + 0xd); + } + /* Fugly! */ + SYM53C500_bus_reset(NULL); + } + break; + } + return 0; +} /* SYM53C500_event */ + +/* +* SYM53C500_proc_info is basically a stub function for now. It +* wouldn't exist except for the fact there were /proc entries for +* this driver under 2.4 and earlier kernels, and the author (sole +* user?) expects to see them. +* +* buffer: I/O buffer +* start: if inout == FALSE, pointer into buffer where user +* read should start +* offset: current offset +* length: length of buffer +* hostno: Scsi_Host host_no +* inout: 1 --> user is writing; 0 --> user is reading +*/ + +#undef SPRINTF +#define SPRINTF(args...) \ + do { \ + if (length > (pos - buffer)) \ + pos += snprintf(pos, length - (pos - buffer) + 1, ## args); \ + } while (0) + +int +SYM53C500_proc_info(struct Scsi_Host *shost, char *buffer, + char **start, off_t offset, int length, int inout) +{ + char *pos = buffer; + int thislength; + + if (inout) + return(-ENOSYS); /* look, but don't touch */ + + /* + * Cheesy, but it's what we had before. + */ + SPRINTF("%s\n", info_msg); + + thislength = pos - (buffer + offset); + + if (thislength < 0) { + *start = 0; + return 0; + } + + thislength = MIN(thislength, length); + *start = buffer + offset; + + return thislength; +} + +static __inline__ int +SYM53C500_pio_read(unsigned char *request, unsigned int reqlen) +{ + int i; + int len; /* current scsi fifo size */ + + REG1; + while (reqlen) { + i = inb(PIO_STATUS); + /* VDEB(printk("pio_status=%x\n", i)); */ + if (i & 0x80) + return 0; + + switch (i & 0x1e) { + default: + case 0x10: /* fifo empty */ + len = 0; + break; + case 0x0: + len = 1; + break; + case 0x8: /* fifo 1/3 full */ + len = 42; + break; + case 0xc: /* fifo 2/3 full */ + len = 84; + break; + case 0xe: /* fifo full */ + len = 128; + break; + } + + if ((i & 0x40) && len == 0) { /* fifo empty and interrupt occurred */ + return 0; + } + + if (len) { + if (len > reqlen) + len = reqlen; + + if (fast_pio && len > 3) { + insl(PIO_FIFO, request, len >> 2); + request += len & 0xfc; + reqlen -= len & 0xfc; + } else { + while (len--) { + *request++ = inb(PIO_FIFO); + reqlen--; + } + } + } + } + return 0; +} + +static __inline__ int +SYM53C500_pio_write(unsigned char *request, unsigned int reqlen) +{ + int i = 0; + int len; /* current scsi fifo size */ + + REG1; + while (reqlen && !(i & 0x40)) { + i = inb(PIO_STATUS); + /* VDEB(printk("pio_status=%x\n", i)); */ + if (i & 0x80) /* error */ + return 0; + + switch (i & 0x1e) { + case 0x10: + len = 128; + break; + case 0x0: + len = 84; + break; + case 0x8: + len = 42; + break; + case 0xc: + len = 1; + break; + default: + case 0xe: + len = 0; + break; + } + + if (len) { + if (len > reqlen) + len = reqlen; + + if (fast_pio && len > 3) { + outsl(PIO_FIFO, request, len >> 2); + request += len & 0xfc; + reqlen -= len & 0xfc; + } else { + while (len--) { + outb(*request++, PIO_FIFO); + reqlen--; + } + } + } + } + return 0; +} + +const char* +SYM53C500_info(struct Scsi_Host *SChost) +{ + DEB(printk("SYM53C500_info called\n")); + return (info_msg); +} + +int +SYM53C500_queue(struct scsi_cmnd *SCpnt, void (*done)(struct scsi_cmnd *)) +{ + int i; + + VDEB(printk("SYM53C500_queue called\n")); + + DEB(printk("cmd=%02x, cmd_len=%02x, target=%02x, lun=%02x, bufflen=%d\n", + SCpnt->cmnd[0], SCpnt->cmd_len, SCpnt->device->id, + SCpnt->device->lun, SCpnt->request_bufflen)); + + VDEB(for (i = 0; i < SCpnt->cmd_len; i++) + printk("cmd[%d]=%02x ", i, SCpnt->cmnd[i])); + VDEB(printk("\n")); + + current_SC = SCpnt; + current_SC->scsi_done = done; + current_SC->SCp.phase = command_ph; + current_SC->SCp.Status = 0; + current_SC->SCp.Message = 0; + + /* We are locked here already by the mid layer */ + REG0; + outb(SCpnt->device->id, DEST_ID); /* set destination */ + outb(FLUSH_FIFO, CMD_REG); /* reset the fifos */ + + for (i = 0; i < SCpnt->cmd_len; i++) { + outb(SCpnt->cmnd[i], SCSI_FIFO); + } + outb(SELECT_NO_ATN, CMD_REG); + + rtrc(1); + return 0; +} + +int +SYM53C500_abort(struct scsi_cmnd *SCpnt) +{ + DEB(printk("SYM53C500_abort called\n")); + return FAILED; /* Don't know how to abort */ +} + +int +SYM53C500_host_reset(struct scsi_cmnd *SCpnt) +{ + DEB(printk("SYM53C500_host_reset called\n")); + outb(C4_IMG, CONFIG4); /* Select reg set 0 */ + outb(CHIP_RESET, CMD_REG); + outb(SCSI_NOP, CMD_REG); /* required after reset */ + outb(SCSI_RESET, CMD_REG); + chip_init(); + + rtrc(2); + return SUCCESS; +} + +int +SYM53C500_device_reset(struct scsi_cmnd *SCpnt) +{ + return FAILED; +} + +int +SYM53C500_bus_reset(struct scsi_cmnd *SCpnt) +{ + return FAILED; +} + +int +SYM53C500_biosparm(struct scsi_device *disk, + struct block_device *dev, + sector_t capacity, int *info_array) +{ + int size; + + DEB(printk("SYM53C500_biosparm called\n")); + + size = capacity; + info_array[0] = 64; /* heads */ + info_array[1] = 32; /* sectors */ + info_array[2] = size >> 11; /* cylinders */ + if (info_array[2] > 1024) { /* big disk */ + info_array[0] = 255; + info_array[1] = 63; + info_array[2] = size / (255 * 63); + } + return 0; +} + +static irqreturn_t +do_SYM53C500_intr(int irq, void *dev_id, struct pt_regs *regs) +{ + unsigned long flags; + struct Scsi_Host *dev = dev_id; + + spin_lock_irqsave(dev->host_lock, flags); + SYM53C500_intr(irq, dev_id, regs); + spin_unlock_irqrestore(dev->host_lock, flags); + return IRQ_HANDLED; +} + +static void +SYM53C500_intr(int irq, void *dev_id, struct pt_regs *regs) +{ + DEB(unsigned char fifo_size;) + DEB(unsigned char seq_reg;) + unsigned char status, int_reg; + unsigned char pio_status; + struct scatterlist *sglist; + unsigned int sgcount; + + VDEB(printk("SYM53C500_intr called\n")); + + REG1; + pio_status = inb(PIO_STATUS); + REG0; + status = inb(STAT_REG); + DEB(seq_reg = inb(SEQ_REG)); + int_reg = inb(INT_REG); + DEB(fifo_size = inb(FIFO_FLAGS) & 0x1f); + +#if SYM53C500_DEBUG + printk("status=%02x, seq_reg=%02x, int_reg=%02x, fifo_size=%02x", + status, seq_reg, int_reg, fifo_size); + printk(", pio=%02x\n", pio_status); +#endif /* SYM53C500_DEBUG */ + + if (int_reg & 0x80) { /* SCSI reset intr */ + rtrc(3); + DEB(printk("SYM53C500: reset intr received\n")); + current_SC->SCp.phase = idle; + current_SC->result = DID_RESET << 16; + current_SC->scsi_done(current_SC); + return; + } + + if (pio_status & 0x80) { + printk("SYM53C500: Warning: PIO error!\n"); + current_SC->SCp.phase = idle; + current_SC->result = DID_ERROR << 16; + current_SC->scsi_done(current_SC); + return; + } + + if (status & 0x20) { /* Parity error */ + printk("SYM53C500: Warning: parity error!\n"); + current_SC->SCp.phase = idle; + current_SC->result = DID_PARITY << 16; + current_SC->scsi_done(current_SC); + return; + } + + if (status & 0x40) { /* Gross error */ + printk("SYM53C500: Warning: gross error!\n"); + current_SC->SCp.phase = idle; + current_SC->result = DID_ERROR << 16; + current_SC->scsi_done(current_SC); + return; + } + + if (int_reg & 0x20) { /* Disconnect */ + DEB(printk("SYM53C500: disconnect intr received\n")); + if (current_SC->SCp.phase != message_in) { /* Unexpected disconnect */ + current_SC->result = DID_NO_CONNECT << 16; + } else { /* Command complete, return status and message */ + current_SC->result = (current_SC->SCp.Status & 0xff) + | ((current_SC->SCp.Message & 0xff) << 8) | (DID_OK << 16); + } + + rtrc(0); + current_SC->SCp.phase = idle; + current_SC->scsi_done(current_SC); + return; + } + + switch (status & 0x07) { /* scsi phase */ + case 0x00: /* DATA-OUT */ + if (int_reg & 0x10) { /* Target requesting info transfer */ + rtrc(5); + current_SC->SCp.phase = data_out; + VDEB(printk("SYM53C500: Data-Out phase\n")); + outb(FLUSH_FIFO, CMD_REG); + LOAD_DMA_COUNT(current_SC->request_bufflen); /* Max transfer size */ + outb(TRANSFER_INFO | DMA_OP, CMD_REG); + if (!current_SC->use_sg) /* Don't use scatter-gather */ + SYM53C500_pio_write(current_SC->request_buffer, current_SC->request_bufflen); + else { /* use scatter-gather */ + sgcount = current_SC->use_sg; + sglist = current_SC->request_buffer; + while (sgcount--) { + SYM53C500_pio_write(page_address(sglist->page) + sglist->offset, sglist->length); + sglist++; + } + } + REG0; + } + break; + + case 0x01: /* DATA-IN */ + if (int_reg & 0x10) { /* Target requesting info transfer */ + rtrc(6); + current_SC->SCp.phase = data_in; + VDEB(printk("SYM53C500: Data-In phase\n")); + outb(FLUSH_FIFO, CMD_REG); + LOAD_DMA_COUNT(current_SC->request_bufflen); /* Max transfer size */ + outb(TRANSFER_INFO | DMA_OP, CMD_REG); + if (!current_SC->use_sg) /* Don't use scatter-gather */ + SYM53C500_pio_read(current_SC->request_buffer, current_SC->request_bufflen); + else { /* Use scatter-gather */ + sgcount = current_SC->use_sg; + sglist = current_SC->request_buffer; + while (sgcount--) { + SYM53C500_pio_read(page_address(sglist->page) + sglist->offset, sglist->length); + sglist++; + } + } + REG0; + } + break; + + case 0x02: /* COMMAND */ + current_SC->SCp.phase = command_ph; + printk("SYM53C500: Warning: Unknown interrupt occurred in command phase!\n"); + break; + + case 0x03: /* STATUS */ + rtrc(7); + current_SC->SCp.phase = status_ph; + VDEB(printk("SYM53C500: Status phase\n")); + outb(FLUSH_FIFO, CMD_REG); + outb(INIT_CMD_COMPLETE, CMD_REG); + break; + + case 0x04: /* Reserved */ + case 0x05: /* Reserved */ + printk("SYM53C500: WARNING: Reserved phase!!!\n"); + break; + + case 0x06: /* MESSAGE-OUT */ + DEB(printk("SYM53C500: Message-Out phase\n")); + current_SC->SCp.phase = message_out; + outb(SET_ATN, CMD_REG); /* Reject the message */ + outb(MSG_ACCEPT, CMD_REG); + break; + + case 0x07: /* MESSAGE-IN */ + rtrc(4); + VDEB(printk("SYM53C500: Message-In phase\n")); + current_SC->SCp.phase = message_in; + + current_SC->SCp.Status = inb(SCSI_FIFO); + current_SC->SCp.Message = inb(SCSI_FIFO); + + VDEB(printk("SCSI FIFO size=%d\n", inb(FIFO_FLAGS) & 0x1f)); + DEB(printk("Status = %02x Message = %02x\n", current_SC->SCp.Status, current_SC->SCp.Message)); + + if (current_SC->SCp.Message == SAVE_POINTERS || current_SC->SCp.Message == DISCONNECT) { + outb(SET_ATN, CMD_REG); /* Reject message */ + DEB(printk("Discarding SAVE_POINTERS message\n")); + } + outb(MSG_ACCEPT, CMD_REG); + break; + } +} + +static void +chip_init(void) +{ + REG1; + outb(0x01, PIO_STATUS); + outb(0x00, PIO_FLAG); + + outb(C4_IMG, CONFIG4); /* REG0; */ + outb(C3_IMG, CONFIG3); + outb(C2_IMG, CONFIG2); + outb(C1_IMG, CONFIG1); + + outb(0x05, CLKCONV); /* clock conversion factor */ + outb(0x9C, SRTIMOUT); /* Selection timeout */ + outb(0x05, SYNCPRD); /* Synchronous transfer period */ + outb(SYNC_MODE, SYNCOFF); /* synchronous mode */ +} + +void +calc_port_addr(void) +{ + /* Control Register Set 0 */ + TC_LSB = (port_base + 0x00); + TC_MSB = (port_base + 0x01); + SCSI_FIFO = (port_base + 0x02); + CMD_REG = (port_base + 0x03); + STAT_REG = (port_base + 0x04); + DEST_ID = (port_base + 0x04); + INT_REG = (port_base + 0x05); + SRTIMOUT = (port_base + 0x05); + SEQ_REG = (port_base + 0x06); + SYNCPRD = (port_base + 0x06); + FIFO_FLAGS = (port_base + 0x07); + SYNCOFF = (port_base + 0x07); + CONFIG1 = (port_base + 0x08); + CLKCONV = (port_base + 0x09); + /* TESTREG = (port_base + 0x0A); */ + CONFIG2 = (port_base + 0x0B); + CONFIG3 = (port_base + 0x0C); + CONFIG4 = (port_base + 0x0D); + TC_HIGH = (port_base + 0x0E); + /* FIFO_BOTTOM = (port_base + 0x0F); */ + + /* Control Register Set 1 */ + /* JUMPER_SENSE = (port_base + 0x00); */ + /* SRAM_PTR = (port_base + 0x01); */ + /* SRAM_DATA = (port_base + 0x02); */ + PIO_FIFO = (port_base + 0x04); + /* PIO_FIFO1 = (port_base + 0x05); */ + /* PIO_FIFO2 = (port_base + 0x06); */ + /* PIO_FIFO3 = (port_base + 0x07); */ + PIO_STATUS = (port_base + 0x08); + /* ATA_CMD = (port_base + 0x09); */ + /* ATA_ERR = (port_base + 0x0A); */ + PIO_FLAG = (port_base + 0x0B); + CONFIG5 = (port_base + 0x09); + /* SIGNATURE = (port_base + 0x0E); */ + /* CONFIG6 = (port_base +0x0F); */ + CONFIG7 = (port_base + 0x0d); +} + +MODULE_AUTHOR("Bob Tracy "); +MODULE_DESCRIPTION("SYM53C500 PCMCIA SCSI driver"); +MODULE_LICENSE("GPL"); + +static struct pcmcia_driver sym53c500_cs_driver = { + .owner = THIS_MODULE, + .drv = { + .name = "sym53c500_cs", + }, + .attach = SYM53C500_attach, + .detach = SYM53C500_detach, +}; + +static int __init +init_sym53c500_cs(void) +{ + return pcmcia_register_driver(&sym53c500_cs_driver); +} + +static void __exit +exit_sym53c500_cs(void) +{ + pcmcia_unregister_driver(&sym53c500_cs_driver); + + /* XXX: this really needs to move into generic code... */ + while (dev_list != NULL) + SYM53C500_detach(dev_list); +} + +module_init(init_sym53c500_cs); +module_exit(exit_sym53c500_cs); --- linux/Documentation/scsi/sym53c500_cs.txt.orig Fri Apr 16 16:06:19 2004 +++ linux/Documentation/scsi/sym53c500_cs.txt Fri Apr 16 15:05:53 2004 @@ -0,0 +1,17 @@ +The sym53c500_cs driver originated as an add-on to David Hinds' pcmcia-cs +package, and was written by Tom Corner (tcorner@via.at). This rewrite +addresses the following concerns: + + (1) extensive kernel changes between 2.4 and 2.6. + (2) deprecated PCMCIA support outside the kernel. + +The Symbios Logic 53c500 chip was used in the "new" (circa 1997) version +of the New Media Bus Toaster PCMCIA SCSI controller. Presumably there are +other products using this chip, but I've never laid eyes (much less hands) +on one. + +Through the years, there have been a number of downloads of the pcmcia-cs +version of this driver, and I guess it worked for those users. It worked +for Tom Corner, and it works for me. Your mileage will probably vary. + +--Bob Tracy (rct@frus.com) --- linux/Documentation/scsi/00-INDEX.orig Fri Apr 16 16:07:11 2004 +++ linux/Documentation/scsi/00-INDEX Fri Apr 9 20:17:36 2004 @@ -62,6 +62,8 @@ - info on API between SCSI layer and low level drivers st.txt - info on scsi tape driver +sym53c500_cs.txt + - info on PCMCIA driver for Symbios Logic 53c500 based adapters sym53c8xx_2.txt - info on second generation driver for sym53c8xx based adapters tmscsim.txt