diff options
Diffstat (limited to 'drivers/scsi/pcmcia/sym53c500_cs.c')
| -rw-r--r-- | drivers/scsi/pcmcia/sym53c500_cs.c | 1022 |
1 files changed, 1022 insertions, 0 deletions
diff --git a/drivers/scsi/pcmcia/sym53c500_cs.c b/drivers/scsi/pcmcia/sym53c500_cs.c new file mode 100644 index 000000000000..8457d0d7748a --- /dev/null +++ b/drivers/scsi/pcmcia/sym53c500_cs.c @@ -0,0 +1,1022 @@ +/* +* 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: intended for use with 2.6 and later kernels. +* The pcmcia-cs add-on version of this driver is not supported +* beyond 2.4. It 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. Note this can be changed via "sysfs". +*/ +#define USE_FAST_PIO 1 + +/* =============== End of user configurable parameters ============== */ + +#include <linux/module.h> +#include <linux/moduleparam.h> +#include <linux/errno.h> +#include <linux/init.h> +#include <linux/interrupt.h> +#include <linux/kernel.h> +#include <linux/sched.h> +#include <linux/slab.h> +#include <linux/string.h> +#include <linux/ioport.h> +#include <linux/blkdev.h> +#include <linux/spinlock.h> +#include <linux/bitops.h> + +#include <asm/io.h> +#include <asm/dma.h> +#include <asm/irq.h> + +#include <scsi/scsi_ioctl.h> +#include <scsi/scsi_cmnd.h> +#include <scsi/scsi_device.h> +#include <scsi/scsi.h> +#include <scsi/scsi_host.h> + +#include <pcmcia/cs_types.h> +#include <pcmcia/cs.h> +#include <pcmcia/cistpl.h> +#include <pcmcia/ds.h> +#include <pcmcia/ciscode.h> + +/* ================================================================== */ + +#ifdef PCMCIA_DEBUG +static int pc_debug = PCMCIA_DEBUG; +module_param(pc_debug, int, 0); +#define DEBUG(n, args...) if (pc_debug>(n)) printk(KERN_DEBUG args) +static char *version = +"sym53c500_cs.c 0.9c 2004/10/27 (Bob Tracy)"; +#else +#define DEBUG(n, args...) +#endif + +/* ================================================================== */ + +#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 */ + +/* Hardware Registers: offsets from io_port (base) */ + +/* Control Register Set 0 */ +#define TC_LSB 0x00 /* transfer counter lsb */ +#define TC_MSB 0x01 /* transfer counter msb */ +#define SCSI_FIFO 0x02 /* scsi fifo register */ +#define CMD_REG 0x03 /* command register */ +#define STAT_REG 0x04 /* status register */ +#define DEST_ID 0x04 /* selection/reselection bus id */ +#define INT_REG 0x05 /* interrupt status register */ +#define SRTIMOUT 0x05 /* select/reselect timeout reg */ +#define SEQ_REG 0x06 /* sequence step register */ +#define SYNCPRD 0x06 /* synchronous transfer period */ +#define FIFO_FLAGS 0x07 /* indicates # of bytes in fifo */ +#define SYNCOFF 0x07 /* synchronous offset register */ +#define CONFIG1 0x08 /* configuration register */ +#define CLKCONV 0x09 /* clock conversion register */ +/* #define TESTREG 0x0A */ /* test mode register */ +#define CONFIG2 0x0B /* configuration 2 register */ +#define CONFIG3 0x0C /* configuration 3 register */ +#define CONFIG4 0x0D /* configuration 4 register */ +#define TC_HIGH 0x0E /* transfer counter high */ +/* #define FIFO_BOTTOM 0x0F */ /* reserve FIFO byte register */ + +/* Control Register Set 1 */ +/* #define JUMPER_SENSE 0x00 */ /* jumper sense port reg (r/w) */ +/* #define SRAM_PTR 0x01 */ /* SRAM address pointer reg (r/w) */ +/* #define SRAM_DATA 0x02 */ /* SRAM data register (r/w) */ +#define PIO_FIFO 0x04 /* PIO FIFO registers (r/w) */ +/* #define PIO_FIFO1 0x05 */ /* */ +/* #define PIO_FIFO2 0x06 */ /* */ +/* #define PIO_FIFO3 0x07 */ /* */ +#define PIO_STATUS 0x08 /* PIO status (r/w) */ +/* #define ATA_CMD 0x09 */ /* ATA command/status reg (r/w) */ +/* #define ATA_ERR 0x0A */ /* ATA features/error reg (r/w) */ +#define PIO_FLAG 0x0B /* PIO flag interrupt enable (r/w) */ +#define CONFIG5 0x09 /* configuration 5 register */ +/* #define SIGNATURE 0x0E */ /* signature register (r) */ +/* #define CONFIG6 0x0F */ /* configuration 6 register (r) */ +#define CONFIG7 0x0d + +/* select register set 0 */ +#define REG0(x) (outb(C4_IMG, (x) + CONFIG4)) +/* select register set 1 */ +#define REG1(x) outb(C7_IMG, (x) + CONFIG7); outb(C5_IMG, (x) + CONFIG5) + +#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(x, count) \ + outb(count & 0xff, (x) + TC_LSB); \ + outb((count >> 8) & 0xff, (x) + TC_MSB); \ + outb((count >> 16) & 0xff, (x) + 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 + +/* ================================================================== */ + +struct scsi_info_t { + dev_link_t link; + dev_node_t node; + struct Scsi_Host *host; + unsigned short manf_id; +}; + +/* +* Repository for per-instance host data. +*/ +struct sym53c500_data { + struct scsi_cmnd *current_SC; + int fast_pio; +}; + +enum Phase { + idle, + data_out, + data_in, + command_ph, + status_ph, + message_out, + message_in +}; + +/* ================================================================== */ + +/* +* Global (within this module) variables other than +* sym53c500_driver_template (the scsi_host_template). +*/ +static dev_link_t *dev_list; +static dev_info_t dev_info = "sym53c500_cs"; + +/* ================================================================== */ + +static void +chip_init(int io_port) +{ + REG1(io_port); + outb(0x01, io_port + PIO_STATUS); + outb(0x00, io_port + PIO_FLAG); + + outb(C4_IMG, io_port + CONFIG4); /* REG0(io_port); */ + outb(C3_IMG, io_port + CONFIG3); + outb(C2_IMG, io_port + CONFIG2); + outb(C1_IMG, io_port + CONFIG1); + + outb(0x05, io_port + CLKCONV); /* clock conversion factor */ + outb(0x9C, io_port + SRTIMOUT); /* Selection timeout */ + outb(0x05, io_port + SYNCPRD); /* Synchronous transfer period */ + outb(SYNC_MODE, io_port + SYNCOFF); /* synchronous mode */ +} + +static void +SYM53C500_int_host_reset(int io_port) +{ + outb(C4_IMG, io_port + CONFIG4); /* REG0(io_port); */ + outb(CHIP_RESET, io_port + CMD_REG); + outb(SCSI_NOP, io_port + CMD_REG); /* required after reset */ + outb(SCSI_RESET, io_port + CMD_REG); + chip_init(io_port); +} + +static __inline__ int +SYM53C500_pio_read(int fast_pio, int base, unsigned char *request, unsigned int reqlen) +{ + int i; + int len; /* current scsi fifo size */ + + REG1(base); + while (reqlen) { + i = inb(base + 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(base + PIO_FIFO, request, len >> 2); + request += len & 0xfc; + reqlen -= len & 0xfc; + } else { + while (len--) { + *request++ = inb(base + PIO_FIFO); + reqlen--; + } + } + } + } + return 0; +} + +static __inline__ int +SYM53C500_pio_write(int fast_pio, int base, unsigned char *request, unsigned int reqlen) +{ + int i = 0; + int len; /* current scsi fifo size */ + + REG1(base); + while (reqlen && !(i & 0x40)) { + i = inb(base + 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(base + PIO_FIFO, request, len >> 2); + request += len & 0xfc; + reqlen -= len & 0xfc; + } else { + while (len--) { + outb(*request++, base + PIO_FIFO); + reqlen--; + } + } + } + } + return 0; +} + +static irqreturn_t +SYM53C500_intr(int irq, void *dev_id, struct pt_regs *regs) +{ + unsigned long flags; + struct Scsi_Host *dev = dev_id; + 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; + int port_base = dev->io_port; + struct sym53c500_data *data = + (struct sym53c500_data *)dev->hostdata; + struct scsi_cmnd *curSC = data->current_SC; + int fast_pio = data->fast_pio; + + spin_lock_irqsave(dev->host_lock, flags); + + VDEB(printk("SYM53C500_intr called\n")); + + REG1(port_base); + pio_status = inb(port_base + PIO_STATUS); + REG0(port_base); + status = inb(port_base + STAT_REG); + DEB(seq_reg = inb(port_base + SEQ_REG)); + int_reg = inb(port_base + INT_REG); + DEB(fifo_size = inb(port_base + 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 */ + DEB(printk("SYM53C500: reset intr received\n")); + curSC->result = DID_RESET << 16; + goto idle_out; + } + + if (pio_status & 0x80) { + printk("SYM53C500: Warning: PIO error!\n"); + curSC->result = DID_ERROR << 16; + goto idle_out; + } + + if (status & 0x20) { /* Parity error */ + printk("SYM53C500: Warning: parity error!\n"); + curSC->result = DID_PARITY << 16; + goto idle_out; + } + + if (status & 0x40) { /* Gross error */ + printk("SYM53C500: Warning: gross error!\n"); + curSC->result = DID_ERROR << 16; + goto idle_out; + } + + if (int_reg & 0x20) { /* Disconnect */ + DEB(printk("SYM53C500: disconnect intr received\n")); + if (curSC->SCp.phase != message_in) { /* Unexpected disconnect */ + curSC->result = DID_NO_CONNECT << 16; + } else { /* Command complete, return status and message */ + curSC->result = (curSC->SCp.Status & 0xff) + | ((curSC->SCp.Message & 0xff) << 8) | (DID_OK << 16); + } + goto idle_out; + } + + switch (status & 0x07) { /* scsi phase */ + case 0x00: /* DATA-OUT */ + if (int_reg & 0x10) { /* Target requesting info transfer */ + curSC->SCp.phase = data_out; + VDEB(printk("SYM53C500: Data-Out phase\n")); + outb(FLUSH_FIFO, port_base + CMD_REG); + LOAD_DMA_COUNT(port_base, curSC->request_bufflen); /* Max transfer size */ + outb(TRANSFER_INFO | DMA_OP, port_base + CMD_REG); + if (!curSC->use_sg) /* Don't use scatter-gather */ + SYM53C500_pio_write(fast_pio, port_base, curSC->request_buffer, curSC->request_bufflen); + else { /* use scatter-gather */ + sgcount = curSC->use_sg; + sglist = curSC->request_buffer; + while (sgcount--) { + SYM53C500_pio_write(fast_pio, port_base, page_address(sglist->page) + sglist->offset, sglist->length); + sglist++; + } + } + REG0(port_base); + } + break; + + case 0x01: /* DATA-IN */ + if (int_reg & 0x10) { /* Target requesting info transfer */ + curSC->SCp.phase = data_in; + VDEB(printk("SYM53C500: Data-In phase\n")); + outb(FLUSH_FIFO, port_base + CMD_REG); + LOAD_DMA_COUNT(port_base, curSC->request_bufflen); /* Max transfer size */ + outb(TRANSFER_INFO | DMA_OP, port_base + CMD_REG); + if (!curSC->use_sg) /* Don't use scatter-gather */ + SYM53C500_pio_read(fast_pio, port_base, curSC->request_buffer, curSC->request_bufflen); + else { /* Use scatter-gather */ + sgcount = curSC->use_sg; + sglist = curSC->request_buffer; + while (sgcount--) { + SYM53C500_pio_read(fast_pio, port_base, page_address(sglist->page) + sglist->offset, sglist->length); + sglist++; + } + } + REG0(port_base); + } + break; + + case 0x02: /* COMMAND */ + curSC->SCp.phase = command_ph; + printk("SYM53C500: Warning: Unknown interrupt occurred in command phase!\n"); + break; + + case 0x03: /* STATUS */ + curSC->SCp.phase = status_ph; + VDEB(printk("SYM53C500: Status phase\n")); + outb(FLUSH_FIFO, port_base + CMD_REG); + outb(INIT_CMD_COMPLETE, port_base + 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")); + curSC->SCp.phase = message_out; + outb(SET_ATN, port_base + CMD_REG); /* Reject the message */ + outb(MSG_ACCEPT, port_base + CMD_REG); + break; + + case 0x07: /* MESSAGE-IN */ + VDEB(printk("SYM53C500: Message-In phase\n")); + curSC->SCp.phase = message_in; + + curSC->SCp.Status = inb(port_base + SCSI_FIFO); + curSC->SCp.Message = inb(port_base + SCSI_FIFO); + + VDEB(printk("SCSI FIFO size=%d\n", inb(port_base + FIFO_FLAGS) & 0x1f)); + DEB(printk("Status = %02x Message = %02x\n", curSC->SCp.Status, curSC->SCp.Message)); + + if (curSC->SCp.Message == SAVE_POINTERS || curSC->SCp.Message == DISCONNECT) { + outb(SET_ATN, port_base + CMD_REG); /* Reject message */ + DEB(printk("Discarding SAVE_POINTERS message\n")); + } + outb(MSG_ACCEPT, port_base + CMD_REG); + break; + } +out: + spin_unlock_irqrestore(dev->host_lock, flags); + return IRQ_HANDLED; + +idle_out: + curSC->SCp.phase = idle; + curSC->scsi_done(curSC); + goto out; +} + +static void +SYM53C500_release(dev_link_t *link) +{ + struct scsi_info_t *info = link->priv; + struct Scsi_Host *shost = info->host; + + DEBUG(0, "SYM53C500_release(0x%p)\n", link); + + /* + * Do this before releasing/freeing resources. + */ + scsi_remove_host(shost); + + /* + * 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); + + 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 const char* +SYM53C500_info(struct Scsi_Host *SChost) +{ + static char info_msg[256]; + struct sym53c500_data *data = + (struct sym53c500_data *)SChost->hostdata; + + DEB(printk("SYM53C500_info called\n")); + (void)snprintf(info_msg, sizeof(info_msg), + "SYM53C500 at 0x%lx, IRQ %d, %s PIO mode.", + SChost->io_port, SChost->irq, data->fast_pio ? "fast" : "slow"); + return (info_msg); +} + +static int +SYM53C500_queue(struct scsi_cmnd *SCpnt, void (*done)(struct scsi_cmnd *)) +{ + int i; + int port_base = SCpnt->device->host->io_port; + struct sym53c500_data *data = + (struct sym53c500_data *)SCpnt->device->host->hostdata; + + 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")); + + data->current_SC = SCpnt; + data->current_SC->scsi_done = done; + data->current_SC->SCp.phase = command_ph; + data->current_SC->SCp.Status = 0; + data->current_SC->SCp.Message = 0; + + /* We are locked here already by the mid layer */ + REG0(port_base); + outb(SCpnt->device->id, port_base + DEST_ID); /* set destination */ + outb(FLUSH_FIFO, port_base + CMD_REG); /* reset the fifos */ + + for (i = 0; i < SCpnt->cmd_len; i++) { + outb(SCpnt->cmnd[i], port_base + SCSI_FIFO); + } + outb(SELECT_NO_ATN, port_base + CMD_REG); + + return 0; +} + +static int +SYM53C500_host_reset(struct scsi_cmnd *SCpnt) +{ + int port_base = SCpnt->device->host->io_port; + + DEB(printk("SYM53C500_host_reset called\n")); + SYM53C500_int_host_reset(port_base); + + return SUCCESS; +} + +static 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 ssize_t +SYM53C500_show_pio(struct class_device *cdev, char *buf) +{ + struct Scsi_Host *SHp = class_to_shost(cdev); + struct sym53c500_data *data = + (struct sym53c500_data *)SHp->hostdata; + + return snprintf(buf, 4, "%d\n", data->fast_pio); +} + +static ssize_t +SYM53C500_store_pio(struct class_device *cdev, const char *buf, size_t count) +{ + int pio; + struct Scsi_Host *SHp = class_to_shost(cdev); + struct sym53c500_data *data = + (struct sym53c500_data *)SHp->hostdata; + + pio = simple_strtoul(buf, NULL, 0); + if (pio == 0 || pio == 1) { + data->fast_pio = pio; + return count; + } + else + return -EINVAL; +} + +/* +* SCSI HBA device attributes we want to +* make available via sysfs. +*/ +static struct class_device_attribute SYM53C500_pio_attr = { + .attr = { + .name = "fast_pio", + .mode = (S_IRUGO | S_IWUSR), + }, + .show = SYM53C500_show_pio, + .store = SYM53C500_store_pio, +}; + +static struct class_device_attribute *SYM53C500_shost_attrs[] = { + &SYM53C500_pio_attr, + NULL, +}; + +/* +* scsi_host_template initializer +*/ +static struct scsi_host_template sym53c500_driver_template = { + .module = THIS_MODULE, + .name = "SYM53C500", + .info = SYM53C500_info, + .queuecommand = SYM53C500_queue, + .eh_host_reset_handler = SYM53C500_host_reset, + .bios_param = SYM53C500_biosparm, + .proc_name = "SYM53C500", + .can_queue = 1, + .this_id = 7, + .sg_tablesize = 32, + .cmd_per_lun = 1, + .use_clustering = ENABLE_CLUSTERING, + .shost_attrs = SYM53C500_shost_attrs +}; + +#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; + struct scsi_info_t *info = link->priv; + tuple_t tuple; + cisparse_t parse; + int i, last_ret, last_fn; + int irq_level, port_base; + unsigned short tuple_data[32]; + struct Scsi_Host *host; + struct scsi_host_template *tpnt = &sym53c500_driver_template; + struct sym53c500_data *data; + + 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); + } + + /* + * irq_level == 0 implies tpnt->can_queue == 0, which + * is not supported in 2.6. Thus, only irq_level > 0 + * will be allowed. + * + * Possible port_base values are as follows: + * + * 0x130, 0x230, 0x280, 0x290, + * 0x320, 0x330, 0x340, 0x350 + */ + 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, USE_FAST_PIO);) + + chip_init(port_base); + + host = scsi_host_alloc(tpnt, sizeof(struct sym53c500_data)); + if (!host) { + printk("SYM53C500: Unable to register host, giving up.\n"); + goto err_release; + } + + data = (struct sym53c500_data *)host->hostdata; + + if (irq_level > 0) { + if (request_irq(irq_level, SYM53C500_intr, SA_SHIRQ, "SYM53C500", host)) { + printk("SYM53C500: unable to allocate IRQ %d\n", irq_level); + goto err_free_scsi; + } + DEB(printk("SYM53C500: allocated IRQ %d\n", irq_level)); + } else if (irq_level == 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; + + /* + * Note fast_pio is set to USE_FAST_PIO by + * default, but can be changed via "sysfs". + */ + data->fast_pio = USE_FAST_PIO; + + sprintf(info->node.dev_name, "scsi%d", host->host_no); + link->dev = &info->node; + info->host = host; + + if (scsi_add_host(host, NULL)) + goto err_free_irq; + + scsi_scan_host(host); + + goto out; /* SUCCESS */ + +err_free_irq: + free_irq(irq_level, host); +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 int +SYM53C500_event(event_t event, int priority, event_callback_args_t *args) +{ + dev_link_t *link = args->client_data; + struct 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); + } + /* + * If things don't work after a "resume", + * this is a good place to start looking. + */ + SYM53C500_int_host_reset(link->io.BasePort1); + } + break; + } + return 0; +} /* SYM53C500_event */ + +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 */ + +static dev_link_t * +SYM53C500_attach(void) +{ + struct scsi_info_t *info; + client_reg_t client_reg; + dev_link_t *link; + int 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_LEVEL_ID; + 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.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 */ + +MODULE_AUTHOR("Bob Tracy <rct@frus.com>"); +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); +} + +module_init(init_sym53c500_cs); +module_exit(exit_sym53c500_cs); |