| /* |
| * 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 |
| * Bjoern A. Zeeb <bzeeb@zabbadoz.net> : Initial irq locking updates |
| * Added another card with 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/init.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/blkdev.h> |
| #include <linux/isapnp.h> |
| #include "scsi.h" |
| #include <scsi/scsi_host.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 MAXHOSTS 4 |
| |
| #define SG_ADDRESS(buffer) ((char *) (page_address((buffer)->page)+(buffer)->offset)) |
| |
| 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); |
| } |
| |
| static DEFINE_SPINLOCK(sym53c416_lock); |
| |
| /* 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; |
| unsigned long i; |
| int timeout = READ_TIMEOUT; |
| |
| /* Do transfer */ |
| spin_lock_irqsave(&sym53c416_lock, flags); |
| 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; |
| spin_unlock_irqrestore(&sym53c416_lock, flags); |
| while(time_before(jiffies, i) && (inb(base + PIO_INT_REG) & EMPTY) && timeout) |
| if(inb(base + PIO_INT_REG) & SCI) |
| timeout = 0; |
| spin_lock_irqsave(&sym53c416_lock, flags); |
| if(inb(base + PIO_INT_REG) & EMPTY) |
| timeout = 0; |
| } |
| } |
| spin_unlock_irqrestore(&sym53c416_lock, 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 long i; |
| unsigned int timeout = WRITE_TIMEOUT; |
| |
| /* Do transfer */ |
| spin_lock_irqsave(&sym53c416_lock, flags); |
| 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; |
| spin_unlock_irqrestore(&sym53c416_lock, flags); |
| while(time_before(jiffies, i) && (inb(base + PIO_INT_REG) & FULL) && timeout) |
| ; |
| spin_lock_irqsave(&sym53c416_lock, flags); |
| if(inb(base + PIO_INT_REG) & FULL) |
| timeout = 0; |
| } |
| } |
| spin_unlock_irqrestore(&sym53c416_lock, flags); |
| return orig_len - len; |
| } |
| |
| static irqreturn_t sym53c416_intr_handle(int irq, void *dev_id, |
| struct pt_regs *regs) |
| { |
| struct Scsi_Host *dev = dev_id; |
| 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 IRQ_NONE; |
| } |
| /* Now we have the base address and we can start handling the interrupt */ |
| |
| spin_lock_irqsave(dev->host_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(dev->host_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(dev->host_lock, flags); |
| current_command->scsi_done(current_command); |
| spin_unlock_irqrestore(dev->host_lock, flags); |
| goto out; |
| } |
| 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(dev->host_lock, flags); |
| current_command->scsi_done(current_command); |
| spin_unlock_irqrestore(dev->host_lock, flags); |
| goto out; |
| } |
| 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(dev->host_lock, flags); |
| current_command->scsi_done(current_command); |
| spin_unlock_irqrestore(dev->host_lock, flags); |
| goto out; |
| } |
| 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(dev->host_lock, flags); |
| current_command->scsi_done(current_command); |
| spin_unlock_irqrestore(dev->host_lock, flags); |
| goto out; |
| } |
| 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(dev->host_lock, flags); |
| current_command->scsi_done(current_command); |
| spin_unlock_irqrestore(dev->host_lock, flags); |
| goto out; |
| } |
| 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(dev->host_lock, flags); |
| current_command->scsi_done(current_command); |
| spin_unlock_irqrestore(dev->host_lock, flags); |
| goto out; |
| } |
| /* 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, SG_ADDRESS(sglist), 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, SG_ADDRESS(sglist), 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; |
| } |
| } |
| out: |
| return IRQ_HANDLED; |
| } |
| |
| 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; |
| unsigned long 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(time_before(jiffies, i) && !(inb(base + STATUS_REG) & SCI)) |
| barrier(); |
| if(time_before_eq(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[] __devinitdata = { |
| { ISAPNP_ANY_ID, ISAPNP_ANY_ID, |
| ISAPNP_VENDOR('S','L','I'), ISAPNP_FUNCTION(0x4161), 0 }, |
| { ISAPNP_ANY_ID, ISAPNP_ANY_ID, |
| ISAPNP_VENDOR('S','L','I'), ISAPNP_FUNCTION(0x4163), 0 }, |
| { ISAPNP_DEVICE_SINGLE_END } |
| }; |
| |
| MODULE_DEVICE_TABLE(isapnp, id_table); |
| |
| static void sym53c416_probe(void) |
| { |
| int *base = probeaddrs; |
| int ints[2]; |
| |
| ints[0] = 1; |
| for(; *base; base++) { |
| if (request_region(*base, IO_RANGE, ID)) { |
| if (sym53c416_test(*base)) { |
| ints[1] = *base; |
| sym53c416_setup(NULL, ints); |
| } |
| release_region(*base, IO_RANGE); |
| } |
| } |
| } |
| |
| int __init sym53c416_detect(struct scsi_host_template *tpnt) |
| { |
| unsigned long flags; |
| struct Scsi_Host * shpnt = NULL; |
| int i; |
| int count; |
| struct pnp_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); |
| |
| for (i=0; id_table[i].vendor != 0; i++) { |
| while((idev=pnp_find_dev(NULL, id_table[i].vendor, |
| id_table[i].function, idev))!=NULL) |
| { |
| int i[3]; |
| |
| if(pnp_device_attach(idev)<0) |
| { |
| printk(KERN_WARNING "sym53c416: unable to attach PnP device.\n"); |
| continue; |
| } |
| if(pnp_activate_dev(idev) < 0) |
| { |
| printk(KERN_WARNING "sym53c416: unable to activate PnP device.\n"); |
| pnp_device_detach(idev); |
| continue; |
| |
| } |
| |
| i[0] = 2; |
| i[1] = pnp_port_start(idev, 0); |
| i[2] = pnp_irq(idev, 0); |
| |
| 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 (!request_region(hosts[i].base, IO_RANGE, ID)) |
| continue; |
| if (!sym53c416_test(hosts[i].base)) { |
| printk(KERN_WARNING "No sym53c416 found at address 0x%03x\n", hosts[i].base); |
| goto fail_release_region; |
| } |
| |
| /* We don't have an irq yet, so we should probe for one */ |
| if (!hosts[i].irq) |
| hosts[i].irq = sym53c416_probeirq(hosts[i].base, hosts[i].scsi_id); |
| if (!hosts[i].irq) |
| goto fail_release_region; |
| |
| shpnt = scsi_register(tpnt, 0); |
| if (!shpnt) |
| goto fail_release_region; |
| /* Request for specified IRQ */ |
| if (request_irq(hosts[i].irq, sym53c416_intr_handle, 0, ID, shpnt)) |
| goto fail_free_host; |
| |
| spin_lock_irqsave(&sym53c416_lock, flags); |
| 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++; |
| spin_unlock_irqrestore(&sym53c416_lock, flags); |
| continue; |
| |
| fail_free_host: |
| scsi_unregister(shpnt); |
| fail_release_region: |
| release_region(hosts[i].base, IO_RANGE); |
| } |
| 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->device->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; |
| |
| spin_lock_irqsave(&sym53c416_lock, flags); |
| outb(scmd_id(SCpnt), 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 */ |
| spin_unlock_irqrestore(&sym53c416_lock, flags); |
| return 0; |
| } |
| |
| static int sym53c416_host_reset(Scsi_Cmnd *SCpnt) |
| { |
| int base; |
| int scsi_id = -1; |
| int i; |
| unsigned long flags; |
| |
| spin_lock_irqsave(&sym53c416_lock, flags); |
| |
| /* printk("sym53c416_reset\n"); */ |
| base = SCpnt->device->host->io_port; |
| /* search scsi_id - fixme, we shouldnt need to iterate for this! */ |
| 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); |
| |
| spin_unlock_irqrestore(&sym53c416_lock, flags); |
| return SUCCESS; |
| } |
| |
| static int sym53c416_release(struct Scsi_Host *shost) |
| { |
| 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); |
| return 0; |
| } |
| |
| static int sym53c416_bios_param(struct scsi_device *sdev, |
| struct block_device *dev, |
| sector_t capacity, int *ip) |
| { |
| int size; |
| |
| size = 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_param_array(sym53c416, uint, NULL, 0); |
| module_param_array(sym53c416_1, uint, NULL, 0); |
| module_param_array(sym53c416_2, uint, NULL, 0); |
| module_param_array(sym53c416_3, uint, NULL, 0); |
| |
| #endif |
| |
| static struct scsi_host_template driver_template = { |
| .proc_name = "sym53c416", |
| .name = "Symbios Logic 53c416", |
| .detect = sym53c416_detect, |
| .info = sym53c416_info, |
| .queuecommand = sym53c416_queuecommand, |
| .eh_host_reset_handler =sym53c416_host_reset, |
| .release = sym53c416_release, |
| .bios_param = sym53c416_bios_param, |
| .can_queue = 1, |
| .this_id = SYM53C416_SCSI_ID, |
| .sg_tablesize = 32, |
| .cmd_per_lun = 1, |
| .unchecked_isa_dma = 1, |
| .use_clustering = ENABLE_CLUSTERING, |
| }; |
| #include "scsi_module.c" |
