| // SPDX-License-Identifier: GPL-2.0-or-later |
| /* |
| * 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). |
| */ |
| |
| #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/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/cistpl.h> |
| #include <pcmcia/ds.h> |
| #include <pcmcia/ciscode.h> |
| |
| |
| /* ================================================================== */ |
| |
| #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 { |
| struct pcmcia_device *p_dev; |
| 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; |
| }; |
| |
| static struct scsi_pointer *sym53c500_scsi_pointer(struct scsi_cmnd *cmd) |
| { |
| return scsi_cmd_priv(cmd); |
| } |
| |
| enum Phase { |
| idle, |
| data_out, |
| data_in, |
| command_ph, |
| status_ph, |
| message_out, |
| message_in |
| }; |
| |
| /* ================================================================== */ |
| |
| 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) |
| { |
| 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; |
| int port_base = dev->io_port; |
| struct sym53c500_data *data = |
| (struct sym53c500_data *)dev->hostdata; |
| struct scsi_cmnd *curSC = data->current_SC; |
| struct scsi_pointer *scsi_pointer = sym53c500_scsi_pointer(curSC); |
| 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 (scsi_pointer->phase != message_in) { /* Unexpected disconnect */ |
| curSC->result = DID_NO_CONNECT << 16; |
| } else { /* Command complete, return status and message */ |
| curSC->result = (scsi_pointer->Status & 0xff) | |
| ((scsi_pointer->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 */ |
| struct scatterlist *sg; |
| int i; |
| |
| scsi_pointer->phase = data_out; |
| VDEB(printk("SYM53C500: Data-Out phase\n")); |
| outb(FLUSH_FIFO, port_base + CMD_REG); |
| LOAD_DMA_COUNT(port_base, scsi_bufflen(curSC)); /* Max transfer size */ |
| outb(TRANSFER_INFO | DMA_OP, port_base + CMD_REG); |
| |
| scsi_for_each_sg(curSC, sg, scsi_sg_count(curSC), i) { |
| SYM53C500_pio_write(fast_pio, port_base, |
| sg_virt(sg), sg->length); |
| } |
| REG0(port_base); |
| } |
| break; |
| |
| case 0x01: /* DATA-IN */ |
| if (int_reg & 0x10) { /* Target requesting info transfer */ |
| struct scatterlist *sg; |
| int i; |
| |
| scsi_pointer->phase = data_in; |
| VDEB(printk("SYM53C500: Data-In phase\n")); |
| outb(FLUSH_FIFO, port_base + CMD_REG); |
| LOAD_DMA_COUNT(port_base, scsi_bufflen(curSC)); /* Max transfer size */ |
| outb(TRANSFER_INFO | DMA_OP, port_base + CMD_REG); |
| |
| scsi_for_each_sg(curSC, sg, scsi_sg_count(curSC), i) { |
| SYM53C500_pio_read(fast_pio, port_base, |
| sg_virt(sg), sg->length); |
| } |
| REG0(port_base); |
| } |
| break; |
| |
| case 0x02: /* COMMAND */ |
| scsi_pointer->phase = command_ph; |
| printk("SYM53C500: Warning: Unknown interrupt occurred in command phase!\n"); |
| break; |
| |
| case 0x03: /* STATUS */ |
| scsi_pointer->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")); |
| scsi_pointer->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")); |
| scsi_pointer->phase = message_in; |
| |
| scsi_pointer->Status = inb(port_base + SCSI_FIFO); |
| scsi_pointer->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", |
| scsi_pointer->Status, scsi_pointer->Message)); |
| |
| if (scsi_pointer->Message == SAVE_POINTERS || |
| scsi_pointer->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: |
| scsi_pointer->phase = idle; |
| scsi_done(curSC); |
| goto out; |
| } |
| |
| static void |
| SYM53C500_release(struct pcmcia_device *link) |
| { |
| struct scsi_info_t *info = link->priv; |
| struct Scsi_Host *shost = info->host; |
| |
| dev_dbg(&link->dev, "SYM53C500_release\n"); |
| |
| /* |
| * 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->io_port && shost->n_io_port) |
| release_region(shost->io_port, shost->n_io_port); |
| |
| pcmcia_disable_device(link); |
| |
| 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_lck(struct scsi_cmnd *SCpnt) |
| { |
| struct scsi_pointer *scsi_pointer = sym53c500_scsi_pointer(SCpnt); |
| 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, |
| (u8)SCpnt->device->lun, scsi_bufflen(SCpnt))); |
| |
| VDEB(for (i = 0; i < SCpnt->cmd_len; i++) |
| printk("cmd[%d]=%02x ", i, SCpnt->cmnd[i])); |
| VDEB(printk("\n")); |
| |
| data->current_SC = SCpnt; |
| scsi_pointer->phase = command_ph; |
| scsi_pointer->Status = 0; |
| scsi_pointer->Message = 0; |
| |
| /* We are locked here already by the mid layer */ |
| REG0(port_base); |
| outb(scmd_id(SCpnt), 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 DEF_SCSI_QCMD(SYM53C500_queue) |
| |
| static int |
| SYM53C500_host_reset(struct scsi_cmnd *SCpnt) |
| { |
| int port_base = SCpnt->device->host->io_port; |
| |
| DEB(printk("SYM53C500_host_reset called\n")); |
| spin_lock_irq(SCpnt->device->host->host_lock); |
| SYM53C500_int_host_reset(port_base); |
| spin_unlock_irq(SCpnt->device->host->host_lock); |
| |
| 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 device *dev, struct device_attribute *attr, |
| char *buf) |
| { |
| struct Scsi_Host *SHp = class_to_shost(dev); |
| 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 device *dev, struct device_attribute *attr, |
| const char *buf, size_t count) |
| { |
| int pio; |
| struct Scsi_Host *SHp = class_to_shost(dev); |
| 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 device_attribute SYM53C500_pio_attr = { |
| .attr = { |
| .name = "fast_pio", |
| .mode = (S_IRUGO | S_IWUSR), |
| }, |
| .show = SYM53C500_show_pio, |
| .store = SYM53C500_store_pio, |
| }; |
| |
| static struct attribute *SYM53C500_shost_attrs[] = { |
| &SYM53C500_pio_attr.attr, |
| NULL, |
| }; |
| |
| ATTRIBUTE_GROUPS(SYM53C500_shost); |
| |
| /* |
| * 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, |
| .shost_groups = SYM53C500_shost_groups, |
| .cmd_size = sizeof(struct scsi_pointer), |
| }; |
| |
| static int SYM53C500_config_check(struct pcmcia_device *p_dev, void *priv_data) |
| { |
| p_dev->io_lines = 10; |
| p_dev->resource[0]->flags &= ~IO_DATA_PATH_WIDTH; |
| p_dev->resource[0]->flags |= IO_DATA_PATH_WIDTH_AUTO; |
| |
| if (p_dev->resource[0]->start == 0) |
| return -ENODEV; |
| |
| return pcmcia_request_io(p_dev); |
| } |
| |
| static int |
| SYM53C500_config(struct pcmcia_device *link) |
| { |
| struct scsi_info_t *info = link->priv; |
| int ret; |
| int irq_level, port_base; |
| struct Scsi_Host *host; |
| struct scsi_host_template *tpnt = &sym53c500_driver_template; |
| struct sym53c500_data *data; |
| |
| dev_dbg(&link->dev, "SYM53C500_config\n"); |
| |
| info->manf_id = link->manf_id; |
| |
| ret = pcmcia_loop_config(link, SYM53C500_config_check, NULL); |
| if (ret) |
| goto failed; |
| |
| if (!link->irq) |
| goto failed; |
| |
| ret = pcmcia_enable_device(link); |
| if (ret) |
| goto failed; |
| |
| /* |
| * 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->resource[0]->start + 0xd); |
| outb(0x24, link->resource[0]->start + 0x9); |
| outb(0x04, link->resource[0]->start + 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->resource[0]->start; |
| irq_level = link->irq; |
| |
| 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, IRQF_SHARED, "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; |
| |
| info->host = host; |
| |
| if (scsi_add_host(host, NULL)) |
| goto err_free_irq; |
| |
| scsi_scan_host(host); |
| |
| return 0; |
| |
| 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"); |
| return -ENODEV; |
| |
| failed: |
| SYM53C500_release(link); |
| return -ENODEV; |
| } /* SYM53C500_config */ |
| |
| static int sym53c500_resume(struct pcmcia_device *link) |
| { |
| struct scsi_info_t *info = link->priv; |
| |
| /* See earlier comment about manufacturer IDs. */ |
| if ((info->manf_id == MANFID_MACNICA) || |
| (info->manf_id == MANFID_PIONEER) || |
| (info->manf_id == 0x0098)) { |
| outb(0x80, link->resource[0]->start + 0xd); |
| outb(0x24, link->resource[0]->start + 0x9); |
| outb(0x04, link->resource[0]->start + 0xd); |
| } |
| /* |
| * If things don't work after a "resume", |
| * this is a good place to start looking. |
| */ |
| SYM53C500_int_host_reset(link->resource[0]->start); |
| |
| return 0; |
| } |
| |
| static void |
| SYM53C500_detach(struct pcmcia_device *link) |
| { |
| dev_dbg(&link->dev, "SYM53C500_detach\n"); |
| |
| SYM53C500_release(link); |
| |
| kfree(link->priv); |
| link->priv = NULL; |
| } /* SYM53C500_detach */ |
| |
| static int |
| SYM53C500_probe(struct pcmcia_device *link) |
| { |
| struct scsi_info_t *info; |
| |
| dev_dbg(&link->dev, "SYM53C500_attach()\n"); |
| |
| /* Create new SCSI device */ |
| info = kzalloc(sizeof(*info), GFP_KERNEL); |
| if (!info) |
| return -ENOMEM; |
| info->p_dev = link; |
| link->priv = info; |
| link->config_flags |= CONF_ENABLE_IRQ | CONF_AUTO_SET_IO; |
| |
| return SYM53C500_config(link); |
| } /* SYM53C500_attach */ |
| |
| MODULE_AUTHOR("Bob Tracy <rct@frus.com>"); |
| MODULE_DESCRIPTION("SYM53C500 PCMCIA SCSI driver"); |
| MODULE_LICENSE("GPL"); |
| |
| static const struct pcmcia_device_id sym53c500_ids[] = { |
| PCMCIA_DEVICE_PROD_ID12("BASICS by New Media Corporation", "SCSI Sym53C500", 0x23c78a9d, 0x0099e7f7), |
| PCMCIA_DEVICE_PROD_ID12("New Media Corporation", "SCSI Bus Toaster Sym53C500", 0x085a850b, 0x45432eb8), |
| PCMCIA_DEVICE_PROD_ID2("SCSI9000", 0x21648f44), |
| PCMCIA_DEVICE_NULL, |
| }; |
| MODULE_DEVICE_TABLE(pcmcia, sym53c500_ids); |
| |
| static struct pcmcia_driver sym53c500_cs_driver = { |
| .owner = THIS_MODULE, |
| .name = "sym53c500_cs", |
| .probe = SYM53C500_probe, |
| .remove = SYM53C500_detach, |
| .id_table = sym53c500_ids, |
| .resume = sym53c500_resume, |
| }; |
| module_pcmcia_driver(sym53c500_cs_driver); |