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[/] [or1k/] [trunk/] [linux/] [linux-2.4/] [drivers/] [scsi/] [sym53c416.c] - Rev 1765
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/* * 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 %d\n", 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 received\n"); 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 defined\n"); 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: %s\n", 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%03x\n", 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%03x\n", 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 %d\n", 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_abort\n"); /* 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_reset\n"); 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"