sym53c416.c
上传用户:jlfgdled
上传日期:2013-04-10
资源大小:33168k
文件大小:26k
- /*
- * sym53c416.c
- * Low-level SCSI driver for sym53c416 chip.
- * Copyright (C) 1998 Lieven Willems (lw_linux@hotmail.com)
- *
- * Changes :
- *
- * Marcelo Tosatti <marcelo@conectiva.com.br> : Added io_request_lock locking
- * Alan Cox <alan@redhat.com> : Cleaned up code formatting
- * Fixed an irq locking bug
- * Added ISAPnP support
- *
- * LILO command line usage: sym53c416=<PORTBASE>[,<IRQ>]
- *
- * 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.
- *
- */
- #include <linux/module.h>
- #include <linux/kernel.h>
- #include <linux/types.h>
- #include <linux/string.h>
- #include <linux/ioport.h>
- #include <linux/sched.h>
- #include <linux/interrupt.h>
- #include <linux/delay.h>
- #include <linux/proc_fs.h>
- #include <linux/spinlock.h>
- #include <asm/dma.h>
- #include <asm/system.h>
- #include <asm/io.h>
- #include <linux/blk.h>
- #include <linux/version.h>
- #include <linux/isapnp.h>
- #include "scsi.h"
- #include "hosts.h"
- #include "sd.h"
- #include "sym53c416.h"
- #define VERSION_STRING "Version 1.0.0-ac"
- #define TC_LOW 0x00 /* Transfer counter low */
- #define TC_MID 0x01 /* Transfer counter mid */
- #define SCSI_FIFO 0x02 /* SCSI FIFO register */
- #define COMMAND_REG 0x03 /* Command Register */
- #define STATUS_REG 0x04 /* Status Register (READ) */
- #define DEST_BUS_ID 0x04 /* Destination Bus ID (WRITE) */
- #define INT_REG 0x05 /* Interrupt Register (READ) */
- #define TOM 0x05 /* Time out multiplier (WRITE) */
- #define STP 0x06 /* Synchronous Transfer period */
- #define SYNC_OFFSET 0x07 /* Synchronous Offset */
- #define CONF_REG_1 0x08 /* Configuration register 1 */
- #define CONF_REG_2 0x0B /* Configuration register 2 */
- #define CONF_REG_3 0x0C /* Configuration register 3 */
- #define CONF_REG_4 0x0D /* Configuration register 4 */
- #define TC_HIGH 0x0E /* Transfer counter high */
- #define PIO_FIFO_1 0x10 /* PIO FIFO register 1 */
- #define PIO_FIFO_2 0x11 /* PIO FIFO register 2 */
- #define PIO_FIFO_3 0x12 /* PIO FIFO register 3 */
- #define PIO_FIFO_4 0x13 /* PIO FIFO register 4 */
- #define PIO_FIFO_CNT 0x14 /* PIO FIFO count */
- #define PIO_INT_REG 0x15 /* PIO interrupt register */
- #define CONF_REG_5 0x16 /* Configuration register 5 */
- #define FEATURE_EN 0x1D /* Feature Enable register */
- /* Configuration register 1 entries: */
- /* Bits 2-0: SCSI ID of host adapter */
- #define SCM 0x80 /* Slow Cable Mode */
- #define SRID 0x40 /* SCSI Reset Interrupt Disable */
- #define PTM 0x20 /* Parity Test Mode */
- #define EPC 0x10 /* Enable Parity Checking */
- #define CTME 0x08 /* Special Test Mode */
- /* Configuration register 2 entries: */
- #define FE 0x40 /* Features Enable */
- #define SCSI2 0x08 /* SCSI 2 Enable */
- #define TBPA 0x04 /* Target Bad Parity Abort */
- /* Configuration register 3 entries: */
- #define IDMRC 0x80 /* ID Message Reserved Check */
- #define QTE 0x40 /* Queue Tag Enable */
- #define CDB10 0x20 /* Command Descriptor Block 10 */
- #define FSCSI 0x10 /* FastSCSI */
- #define FCLK 0x08 /* FastClock */
- /* Configuration register 4 entries: */
- #define RBS 0x08 /* Register bank select */
- #define EAN 0x04 /* Enable Active Negotiation */
- /* Configuration register 5 entries: */
- #define LPSR 0x80 /* Lower Power SCSI Reset */
- #define IE 0x20 /* Interrupt Enable */
- #define LPM 0x02 /* Low Power Mode */
- #define WSE0 0x01 /* 0WS Enable */
- /* Interrupt register entries: */
- #define SRST 0x80 /* SCSI Reset */
- #define ILCMD 0x40 /* Illegal Command */
- #define DIS 0x20 /* Disconnect */
- #define BS 0x10 /* Bus Service */
- #define FC 0x08 /* Function Complete */
- #define RESEL 0x04 /* Reselected */
- #define SI 0x03 /* Selection Interrupt */
- /* Status Register Entries: */
- #define SCI 0x80 /* SCSI Core Int */
- #define GE 0x40 /* Gross Error */
- #define PE 0x20 /* Parity Error */
- #define TC 0x10 /* Terminal Count */
- #define VGC 0x08 /* Valid Group Code */
- #define PHBITS 0x07 /* Phase bits */
- /* PIO Interrupt Register Entries: */
- #define SCI 0x80 /* SCSI Core Int */
- #define PFI 0x40 /* PIO FIFO Interrupt */
- #define FULL 0x20 /* PIO FIFO Full */
- #define EMPTY 0x10 /* PIO FIFO Empty */
- #define CE 0x08 /* Collision Error */
- #define OUE 0x04 /* Overflow / Underflow error */
- #define FIE 0x02 /* Full Interrupt Enable */
- #define EIE 0x01 /* Empty Interrupt Enable */
- /* SYM53C416 SCSI phases (lower 3 bits of SYM53C416_STATUS_REG) */
- #define PHASE_DATA_OUT 0x00
- #define PHASE_DATA_IN 0x01
- #define PHASE_COMMAND 0x02
- #define PHASE_STATUS 0x03
- #define PHASE_RESERVED_1 0x04
- #define PHASE_RESERVED_2 0x05
- #define PHASE_MESSAGE_OUT 0x06
- #define PHASE_MESSAGE_IN 0x07
- /* SYM53C416 core commands */
- #define NOOP 0x00
- #define FLUSH_FIFO 0x01
- #define RESET_CHIP 0x02
- #define RESET_SCSI_BUS 0x03
- #define DISABLE_SEL_RESEL 0x45
- #define RESEL_SEQ 0x40
- #define SEL_WITHOUT_ATN_SEQ 0x41
- #define SEL_WITH_ATN_SEQ 0x42
- #define SEL_WITH_ATN_AND_STOP_SEQ 0x43
- #define ENABLE_SEL_RESEL 0x44
- #define SEL_WITH_ATN3_SEQ 0x46
- #define RESEL3_SEQ 0x47
- #define SND_MSG 0x20
- #define SND_STAT 0x21
- #define SND_DATA 0x22
- #define DISCONNECT_SEQ 0x23
- #define TERMINATE_SEQ 0x24
- #define TARGET_COMM_COMPLETE_SEQ 0x25
- #define DISCONN 0x27
- #define RECV_MSG_SEQ 0x28
- #define RECV_CMD 0x29
- #define RECV_DATA 0x2A
- #define RECV_CMD_SEQ 0x2B
- #define TARGET_ABORT_PIO 0x04
- #define TRANSFER_INFORMATION 0x10
- #define INIT_COMM_COMPLETE_SEQ 0x11
- #define MSG_ACCEPTED 0x12
- #define TRANSFER_PAD 0x18
- #define SET_ATN 0x1A
- #define RESET_ATN 0x1B
- #define ILLEGAL 0xFF
- #define PIO_MODE 0x80
- #define IO_RANGE 0x20 /* 0x00 - 0x1F */
- #define ID "sym53c416" /* Attention: copied to the sym53c416.h */
- #define PIO_SIZE 128 /* Size of PIO fifo is 128 bytes */
- #define READ_TIMEOUT 150
- #define WRITE_TIMEOUT 150
- #ifdef MODULE
- #define sym53c416_base sym53c416
- #define sym53c416_base_1 sym53c416_1
- #define sym53c416_base_2 sym53c416_2
- #define sym53c416_base_3 sym53c416_3
- static unsigned int sym53c416_base[2] = {0,0};
- static unsigned int sym53c416_base_1[2] = {0,0};
- static unsigned int sym53c416_base_2[2] = {0,0};
- static unsigned int sym53c416_base_3[2] = {0,0};
- #endif
- /* #define DEBUG */
- /* Macro for debugging purposes */
- #ifdef DEBUG
- #define DEB(x) x
- #else
- #define DEB(x)
- #endif
- #define MAXHOSTS 4
- enum phases
- {
- idle,
- data_out,
- data_in,
- command_ph,
- status_ph,
- message_out,
- message_in
- };
- typedef struct
- {
- int base;
- int irq;
- int scsi_id;
- } host;
- static host hosts[MAXHOSTS] = {
- {0, 0, SYM53C416_SCSI_ID},
- {0, 0, SYM53C416_SCSI_ID},
- {0, 0, SYM53C416_SCSI_ID},
- {0, 0, SYM53C416_SCSI_ID}
- };
- static int host_index = 0;
- static char info[120];
- static Scsi_Cmnd *current_command = NULL;
- static int fastpio = 1;
- static int probeaddrs[] = {0x200, 0x220, 0x240, 0};
- static void sym53c416_set_transfer_counter(int base, unsigned int len)
- {
- /* Program Transfer Counter */
- outb(len & 0x0000FF, base + TC_LOW);
- outb((len & 0x00FF00) >> 8, base + TC_MID);
- outb((len & 0xFF0000) >> 16, base + TC_HIGH);
- }
- /* Returns the number of bytes read */
- static __inline__ unsigned int sym53c416_read(int base, unsigned char *buffer, unsigned int len)
- {
- unsigned int orig_len = len;
- unsigned long flags = 0;
- unsigned int bytes_left;
- int i;
- int timeout = READ_TIMEOUT;
- /* Do transfer */
- save_flags(flags);
- cli();
- while(len && timeout)
- {
- bytes_left = inb(base + PIO_FIFO_CNT); /* Number of bytes in the PIO FIFO */
- if(fastpio && bytes_left > 3)
- {
- insl(base + PIO_FIFO_1, buffer, bytes_left >> 2);
- buffer += bytes_left & 0xFC;
- len -= bytes_left & 0xFC;
- }
- else if(bytes_left > 0)
- {
- len -= bytes_left;
- for(; bytes_left > 0; bytes_left--)
- *(buffer++) = inb(base + PIO_FIFO_1);
- }
- else
- {
- i = jiffies + timeout;
- restore_flags(flags);
- while(jiffies < i && (inb(base + PIO_INT_REG) & EMPTY) && timeout)
- if(inb(base + PIO_INT_REG) & SCI)
- timeout = 0;
- save_flags(flags);
- cli();
- if(inb(base + PIO_INT_REG) & EMPTY)
- timeout = 0;
- }
- }
- restore_flags(flags);
- return orig_len - len;
- }
- /* Returns the number of bytes written */
- static __inline__ unsigned int sym53c416_write(int base, unsigned char *buffer, unsigned int len)
- {
- unsigned int orig_len = len;
- unsigned long flags = 0;
- unsigned int bufferfree;
- unsigned int i;
- unsigned int timeout = WRITE_TIMEOUT;
- /* Do transfer */
- save_flags(flags);
- cli();
- while(len && timeout)
- {
- bufferfree = PIO_SIZE - inb(base + PIO_FIFO_CNT);
- if(bufferfree > len)
- bufferfree = len;
- if(fastpio && bufferfree > 3)
- {
- outsl(base + PIO_FIFO_1, buffer, bufferfree >> 2);
- buffer += bufferfree & 0xFC;
- len -= bufferfree & 0xFC;
- }
- else if(bufferfree > 0)
- {
- len -= bufferfree;
- for(; bufferfree > 0; bufferfree--)
- outb(*(buffer++), base + PIO_FIFO_1);
- }
- else
- {
- i = jiffies + timeout;
- restore_flags(flags);
- while(jiffies < i && (inb(base + PIO_INT_REG) & FULL) && timeout)
- ;
- save_flags(flags);
- cli();
- if(inb(base + PIO_INT_REG) & FULL)
- timeout = 0;
- }
- }
- restore_flags(flags);
- return orig_len - len;
- }
- static void sym53c416_intr_handle(int irq, void *dev_id, struct pt_regs *regs)
- {
- int base = 0;
- int i;
- unsigned long flags = 0;
- unsigned char status_reg, pio_int_reg, int_reg;
- struct scatterlist *sglist;
- unsigned int sgcount;
- unsigned int tot_trans = 0;
- /* We search the base address of the host adapter which caused the interrupt */
- /* FIXME: should pass dev_id sensibly as hosts[i] */
- for(i = 0; i < host_index && !base; i++)
- if(irq == hosts[i].irq)
- base = hosts[i].base;
- /* If no adapter found, we cannot handle the interrupt. Leave a message */
- /* and continue. This should never happen... */
- if(!base)
- {
- printk(KERN_ERR "sym53c416: No host adapter defined for interrupt %dn", irq);
- return;
- }
- /* Now we have the base address and we can start handling the interrupt */
- spin_lock_irqsave(&io_request_lock,flags);
- status_reg = inb(base + STATUS_REG);
- pio_int_reg = inb(base + PIO_INT_REG);
- int_reg = inb(base + INT_REG);
- spin_unlock_irqrestore(&io_request_lock, flags);
- /* First, we handle error conditions */
- if(int_reg & SCI) /* SCSI Reset */
- {
- printk(KERN_DEBUG "sym53c416: Reset receivedn");
- current_command->SCp.phase = idle;
- current_command->result = DID_RESET << 16;
- spin_lock_irqsave(&io_request_lock, flags);
- current_command->scsi_done(current_command);
- spin_unlock_irqrestore(&io_request_lock, flags);
- return;
- }
- if(int_reg & ILCMD) /* Illegal Command */
- {
- printk(KERN_WARNING "sym53c416: Illegal Command: 0x%02x.n", inb(base + COMMAND_REG));
- current_command->SCp.phase = idle;
- current_command->result = DID_ERROR << 16;
- spin_lock_irqsave(&io_request_lock, flags);
- current_command->scsi_done(current_command);
- spin_unlock_irqrestore(&io_request_lock, flags);
- return;
- }
- if(status_reg & GE) /* Gross Error */
- {
- printk(KERN_WARNING "sym53c416: Controller reports gross error.n");
- current_command->SCp.phase = idle;
- current_command->result = DID_ERROR << 16;
- spin_lock_irqsave(&io_request_lock, flags);
- current_command->scsi_done(current_command);
- spin_unlock_irqrestore(&io_request_lock, flags);
- return;
- }
- if(status_reg & PE) /* Parity Error */
- {
- printk(KERN_WARNING "sym53c416:SCSI parity error.n");
- current_command->SCp.phase = idle;
- current_command->result = DID_PARITY << 16;
- spin_lock_irqsave(&io_request_lock, flags);
- current_command->scsi_done(current_command);
- spin_unlock_irqrestore(&io_request_lock, flags);
- return;
- }
- if(pio_int_reg & (CE | OUE))
- {
- printk(KERN_WARNING "sym53c416: PIO interrupt error.n");
- current_command->SCp.phase = idle;
- current_command->result = DID_ERROR << 16;
- spin_lock_irqsave(&io_request_lock, flags);
- current_command->scsi_done(current_command);
- spin_unlock_irqrestore(&io_request_lock, flags);
- return;
- }
- if(int_reg & DIS) /* Disconnect */
- {
- if(current_command->SCp.phase != message_in)
- current_command->result = DID_NO_CONNECT << 16;
- else
- current_command->result = (current_command->SCp.Status & 0xFF) | ((current_command->SCp.Message & 0xFF) << 8) | (DID_OK << 16);
- current_command->SCp.phase = idle;
- spin_lock_irqsave(&io_request_lock, flags);
- current_command->scsi_done(current_command);
- spin_unlock_irqrestore(&io_request_lock, flags);
- return;
- }
- /* Now we handle SCSI phases */
- switch(status_reg & PHBITS) /* Filter SCSI phase out of status reg */
- {
- case PHASE_DATA_OUT:
- {
- if(int_reg & BS)
- {
- current_command->SCp.phase = data_out;
- outb(FLUSH_FIFO, base + COMMAND_REG);
- sym53c416_set_transfer_counter(base, current_command->request_bufflen);
- outb(TRANSFER_INFORMATION | PIO_MODE, base + COMMAND_REG);
- if(!current_command->use_sg)
- tot_trans = sym53c416_write(base, current_command->request_buffer, current_command->request_bufflen);
- else
- {
- sgcount = current_command->use_sg;
- sglist = current_command->request_buffer;
- while(sgcount--)
- {
- tot_trans += sym53c416_write(base, sglist->address, sglist->length);
- sglist++;
- }
- }
- if(tot_trans < current_command->underflow)
- printk(KERN_WARNING "sym53c416: Underflow, wrote %d bytes, request for %d bytes.n", tot_trans, current_command->underflow);
- }
- break;
- }
- case PHASE_DATA_IN:
- {
- if(int_reg & BS)
- {
- current_command->SCp.phase = data_in;
- outb(FLUSH_FIFO, base + COMMAND_REG);
- sym53c416_set_transfer_counter(base, current_command->request_bufflen);
- outb(TRANSFER_INFORMATION | PIO_MODE, base + COMMAND_REG);
- if(!current_command->use_sg)
- tot_trans = sym53c416_read(base, current_command->request_buffer, current_command->request_bufflen);
- else
- {
- sgcount = current_command->use_sg;
- sglist = current_command->request_buffer;
- while(sgcount--)
- {
- tot_trans += sym53c416_read(base, sglist->address, sglist->length);
- sglist++;
- }
- }
- if(tot_trans < current_command->underflow)
- printk(KERN_WARNING "sym53c416: Underflow, read %d bytes, request for %d bytes.n", tot_trans, current_command->underflow);
- }
- break;
- }
- case PHASE_COMMAND:
- {
- current_command->SCp.phase = command_ph;
- printk(KERN_ERR "sym53c416: Unknown interrupt in command phase.n");
- break;
- }
- case PHASE_STATUS:
- {
- current_command->SCp.phase = status_ph;
- outb(FLUSH_FIFO, base + COMMAND_REG);
- outb(INIT_COMM_COMPLETE_SEQ, base + COMMAND_REG);
- break;
- }
-
- case PHASE_RESERVED_1:
- case PHASE_RESERVED_2:
- {
- printk(KERN_ERR "sym53c416: Reserved phase occurred.n");
- break;
- }
- case PHASE_MESSAGE_OUT:
- {
- current_command->SCp.phase = message_out;
- outb(SET_ATN, base + COMMAND_REG);
- outb(MSG_ACCEPTED, base + COMMAND_REG);
- break;
- }
- case PHASE_MESSAGE_IN:
- {
- current_command->SCp.phase = message_in;
- current_command->SCp.Status = inb(base + SCSI_FIFO);
- current_command->SCp.Message = inb(base + SCSI_FIFO);
- if(current_command->SCp.Message == SAVE_POINTERS || current_command->SCp.Message == DISCONNECT)
- outb(SET_ATN, base + COMMAND_REG);
- outb(MSG_ACCEPTED, base + COMMAND_REG);
- break;
- }
- }
- }
- static void sym53c416_init(int base, int scsi_id)
- {
- outb(RESET_CHIP, base + COMMAND_REG);
- outb(NOOP, base + COMMAND_REG);
- outb(0x99, base + TOM); /* Time out of 250 ms */
- outb(0x05, base + STP);
- outb(0x00, base + SYNC_OFFSET);
- outb(EPC | scsi_id, base + CONF_REG_1);
- outb(FE | SCSI2 | TBPA, base + CONF_REG_2);
- outb(IDMRC | QTE | CDB10 | FSCSI | FCLK, base + CONF_REG_3);
- outb(0x83 | EAN, base + CONF_REG_4);
- outb(IE | WSE0, base + CONF_REG_5);
- outb(0, base + FEATURE_EN);
- }
- static int sym53c416_probeirq(int base, int scsi_id)
- {
- int irq, irqs, i;
- /* Clear interrupt register */
- inb(base + INT_REG);
- /* Start probing for irq's */
- irqs = probe_irq_on();
- /* Reinit chip */
- sym53c416_init(base, scsi_id);
- /* Cause interrupt */
- outb(NOOP, base + COMMAND_REG);
- outb(ILLEGAL, base + COMMAND_REG);
- outb(0x07, base + DEST_BUS_ID);
- outb(0x00, base + DEST_BUS_ID);
- /* Wait for interrupt to occur */
- i = jiffies + 20;
- while(i > jiffies && !(inb(base + STATUS_REG) & SCI))
- barrier();
- if(i <= jiffies) /* timed out */
- return 0;
- /* Get occurred irq */
- irq = probe_irq_off(irqs);
- sym53c416_init(base, scsi_id);
- return irq;
- }
- /* Setup: sym53c416=base,irq */
- void sym53c416_setup(char *str, int *ints)
- {
- int i;
- if(host_index >= MAXHOSTS)
- {
- printk(KERN_WARNING "sym53c416: Too many hosts definedn");
- return;
- }
- if(ints[0] < 1 || ints[0] > 2)
- {
- printk(KERN_ERR "sym53c416: Wrong number of parameters:n");
- printk(KERN_ERR "sym53c416: usage: sym53c416=<base>[,<irq>]n");
- return;
- }
- for(i = 0; i < host_index && i >= 0; i++)
- if(hosts[i].base == ints[1])
- i = -2;
- if(i >= 0)
- {
- hosts[host_index].base = ints[1];
- hosts[host_index].irq = (ints[0] == 2)? ints[2] : 0;
- host_index++;
- }
- }
- static int sym53c416_test(int base)
- {
- outb(RESET_CHIP, base + COMMAND_REG);
- outb(NOOP, base + COMMAND_REG);
- if(inb(base + COMMAND_REG) != NOOP)
- return 0;
- if(!inb(base + TC_HIGH) || inb(base + TC_HIGH) == 0xFF)
- return 0;
- if((inb(base + PIO_INT_REG) & (FULL | EMPTY | CE | OUE | FIE | EIE)) != EMPTY)
- return 0;
- return 1;
- }
- static struct isapnp_device_id id_table[] = {
- { ISAPNP_ANY_ID, ISAPNP_ANY_ID,
- ISAPNP_VENDOR('S','L','I'), ISAPNP_FUNCTION(0x4163), 0 },
- {0}
- };
- MODULE_DEVICE_TABLE(isapnp, id_table);
- void sym53c416_probe(void)
- {
- int *base = probeaddrs;
- int ints[2];
- ints[0] = 1;
- for(; *base; base++)
- {
- if(!check_region(*base, IO_RANGE) && sym53c416_test(*base))
- {
- ints[1] = *base;
- sym53c416_setup(NULL, ints);
- }
- }
- }
- int sym53c416_detect(Scsi_Host_Template *tpnt)
- {
- unsigned long flags;
- struct Scsi_Host * shpnt = NULL;
- int i;
- int count;
- struct pci_dev *idev = NULL;
-
- #ifdef MODULE
- int ints[3];
- ints[0] = 2;
- if(sym53c416_base)
- {
- ints[1] = sym53c416_base[0];
- ints[2] = sym53c416_base[1];
- sym53c416_setup(NULL, ints);
- }
- if(sym53c416_base_1)
- {
- ints[1] = sym53c416_base_1[0];
- ints[2] = sym53c416_base_1[1];
- sym53c416_setup(NULL, ints);
- }
- if(sym53c416_base_2)
- {
- ints[1] = sym53c416_base_2[0];
- ints[2] = sym53c416_base_2[1];
- sym53c416_setup(NULL, ints);
- }
- if(sym53c416_base_3)
- {
- ints[1] = sym53c416_base_3[0];
- ints[2] = sym53c416_base_3[1];
- sym53c416_setup(NULL, ints);
- }
- #endif
- printk(KERN_INFO "sym53c416.c: %sn", VERSION_STRING);
- while((idev=isapnp_find_dev(NULL, ISAPNP_VENDOR('S','L','I'),
- ISAPNP_FUNCTION(0x4163), idev))!=NULL)
- {
- int i[3];
-
- if(idev->prepare(idev)<0)
- {
- printk(KERN_WARNING "sym53c416: unable to prepare PnP card.n");
- continue;
- }
- if(idev->activate(idev)<0)
- {
- printk(KERN_WARNING "sym53c416: unable to activate PnP card.n");
- continue;
- }
-
- i[0] = 2;
- i[1] = idev->resource[0].start;
- i[2] = idev->irq_resource[0].start;
-
- printk(KERN_INFO "sym53c416: ISAPnP card found and configured at 0x%X, IRQ %d.n",
- i[1], i[2]);
- sym53c416_setup(NULL, i);
- }
- sym53c416_probe();
- /* Now we register and set up each host adapter found... */
- for(count = 0, i = 0; i < host_index; i++)
- {
- if(!sym53c416_test(hosts[i].base))
- printk(KERN_WARNING "No sym53c416 found at address 0x%03xn", hosts[i].base);
- else
- {
- if(hosts[i].irq == 0)
- /* We don't have an irq yet, so we should probe for one */
- if((hosts[i].irq = sym53c416_probeirq(hosts[i].base, hosts[i].scsi_id)) == 0)
- printk(KERN_WARNING "IRQ autoprobing failed for sym53c416 at address 0x%03xn", hosts[i].base);
- if(hosts[i].irq && !check_region(hosts[i].base, IO_RANGE))
- {
- shpnt = scsi_register(tpnt, 0);
- if(shpnt==NULL)
- continue;
- save_flags(flags);
- cli();
- /* FIXME: Request_irq with CLI is not safe */
- /* Request for specified IRQ */
- if(request_irq(hosts[i].irq, sym53c416_intr_handle, 0, ID, NULL))
- {
- restore_flags(flags);
- printk(KERN_ERR "sym53c416: Unable to assign IRQ %dn", hosts[i].irq);
- scsi_unregister(shpnt);
- }
- else
- {
- /* Inform the kernel of our IO range */
- request_region(hosts[i].base, IO_RANGE, ID);
- shpnt->unique_id = hosts[i].base;
- shpnt->io_port = hosts[i].base;
- shpnt->n_io_port = IO_RANGE;
- shpnt->irq = hosts[i].irq;
- shpnt->this_id = hosts[i].scsi_id;
- sym53c416_init(hosts[i].base, hosts[i].scsi_id);
- count++;
- restore_flags(flags);
- }
- }
- }
- }
- return count;
- }
- const char *sym53c416_info(struct Scsi_Host *SChost)
- {
- int i;
- int base = SChost->io_port;
- int irq = SChost->irq;
- int scsi_id = 0;
- int rev = inb(base + TC_HIGH);
- for(i = 0; i < host_index; i++)
- if(hosts[i].base == base)
- scsi_id = hosts[i].scsi_id;
- sprintf(info, "Symbios Logic 53c416 (rev. %d) at 0x%03x, irq %d, SCSI-ID %d, %s pio", rev, base, irq, scsi_id, (fastpio)? "fast" : "slow");
- return info;
- }
- int sym53c416_queuecommand(Scsi_Cmnd *SCpnt, void (*done)(Scsi_Cmnd *))
- {
- int base;
- unsigned long flags = 0;
- int i;
- /* Store base register as we can have more than one controller in the system */
- base = SCpnt->host->io_port;
- current_command = SCpnt; /* set current command */
- current_command->scsi_done = done; /* set ptr to done function */
- current_command->SCp.phase = command_ph; /* currect phase is the command phase */
- current_command->SCp.Status = 0;
- current_command->SCp.Message = 0;
- save_flags(flags);
- cli();
- outb(SCpnt->target, base + DEST_BUS_ID); /* Set scsi id target */
- outb(FLUSH_FIFO, base + COMMAND_REG); /* Flush SCSI and PIO FIFO's */
- /* Write SCSI command into the SCSI fifo */
- for(i = 0; i < SCpnt->cmd_len; i++)
- outb(SCpnt->cmnd[i], base + SCSI_FIFO);
- /* Start selection sequence */
- outb(SEL_WITHOUT_ATN_SEQ, base + COMMAND_REG);
- /* Now an interrupt will be generated which we will catch in out interrupt routine */
- restore_flags(flags);
- return 0;
- }
- static void internal_done(Scsi_Cmnd *SCpnt)
- {
- SCpnt->SCp.Status++;
- }
- static int sym53c416_command(Scsi_Cmnd *SCpnt)
- {
- sym53c416_queuecommand(SCpnt, internal_done);
- SCpnt->SCp.Status = 0;
- while(!SCpnt->SCp.Status)
- barrier();
- return SCpnt->result;
- }
- static int sym53c416_abort(Scsi_Cmnd *SCpnt)
- {
- //printk("sym53c416_abortn");
- /* We don't know how to abort for the moment */
- return SCSI_ABORT_SNOOZE;
- }
- static int sym53c416_reset(Scsi_Cmnd *SCpnt, unsigned int reset_flags)
- {
- int base;
- int scsi_id = -1;
- int i;
- //printk("sym53c416_resetn");
- base = SCpnt->host->io_port;
- /* search scsi_id */
- for(i = 0; i < host_index && scsi_id != -1; i++)
- if(hosts[i].base == base)
- scsi_id = hosts[i].scsi_id;
- outb(RESET_CHIP, base + COMMAND_REG);
- outb(NOOP | PIO_MODE, base + COMMAND_REG);
- outb(RESET_SCSI_BUS, base + COMMAND_REG);
- sym53c416_init(base, scsi_id);
- return SCSI_RESET_PENDING;
- }
- static int sym53c416_bios_param(Disk *disk, kdev_t dev, int *ip)
- {
- int size;
- size = disk->capacity;
- ip[0] = 64; /* heads */
- ip[1] = 32; /* sectors */
- if((ip[2] = size >> 11) > 1024) /* cylinders, test for big disk */
- {
- ip[0] = 255; /* heads */
- ip[1] = 63; /* sectors */
- ip[2] = size / (255 * 63); /* cylinders */
- }
- return 0;
- }
- /* Loadable module support */
- #ifdef MODULE
- MODULE_AUTHOR("Lieven Willems");
- MODULE_LICENSE("GPL");
- MODULE_PARM(sym53c416, "1-2i");
- MODULE_PARM(sym53c416_1, "1-2i");
- MODULE_PARM(sym53c416_2, "1-2i");
- MODULE_PARM(sym53c416_3, "1-2i");
- #endif
- static Scsi_Host_Template driver_template = SYM53C416;
- #include "scsi_module.c"