883 lines
22 KiB
C
883 lines
22 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* sym53c500_cs.c Bob Tracy (rct@frus.com)
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*
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* A rewrite of the pcmcia-cs add-on driver for newer (circa 1997)
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* New Media Bus Toaster PCMCIA SCSI cards using the Symbios Logic
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* 53c500 controller: intended for use with 2.6 and later kernels.
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* The pcmcia-cs add-on version of this driver is not supported
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* beyond 2.4. It consisted of three files with history/copyright
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* information as follows:
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*
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* SYM53C500.h
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* Bob Tracy (rct@frus.com)
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* Original by Tom Corner (tcorner@via.at).
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* Adapted from NCR53c406a.h which is Copyrighted (C) 1994
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* Normunds Saumanis (normunds@rx.tech.swh.lv)
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*
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* SYM53C500.c
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* Bob Tracy (rct@frus.com)
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* Original driver by Tom Corner (tcorner@via.at) was adapted
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* from NCR53c406a.c which is Copyrighted (C) 1994, 1995, 1996
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* Normunds Saumanis (normunds@fi.ibm.com)
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*
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* sym53c500.c
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* Bob Tracy (rct@frus.com)
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* Original by Tom Corner (tcorner@via.at) was adapted from a
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* driver for the Qlogic SCSI card written by
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* David Hinds (dhinds@allegro.stanford.edu).
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*/
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#define SYM53C500_DEBUG 0
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#define VERBOSE_SYM53C500_DEBUG 0
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/*
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* Set this to 0 if you encounter kernel lockups while transferring
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* data in PIO mode. Note this can be changed via "sysfs".
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*/
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#define USE_FAST_PIO 1
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/* =============== End of user configurable parameters ============== */
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#include <linux/module.h>
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#include <linux/moduleparam.h>
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#include <linux/errno.h>
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#include <linux/init.h>
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#include <linux/interrupt.h>
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#include <linux/kernel.h>
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#include <linux/slab.h>
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#include <linux/string.h>
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#include <linux/ioport.h>
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#include <linux/blkdev.h>
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#include <linux/spinlock.h>
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#include <linux/bitops.h>
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#include <asm/io.h>
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#include <asm/dma.h>
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#include <asm/irq.h>
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#include <scsi/scsi_ioctl.h>
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#include <scsi/scsi_cmnd.h>
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#include <scsi/scsi_device.h>
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#include <scsi/scsi.h>
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#include <scsi/scsi_host.h>
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#include <pcmcia/cistpl.h>
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#include <pcmcia/ds.h>
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#include <pcmcia/ciscode.h>
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/* ================================================================== */
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#define SYNC_MODE 0 /* Synchronous transfer mode */
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/* Default configuration */
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#define C1_IMG 0x07 /* ID=7 */
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#define C2_IMG 0x48 /* FE SCSI2 */
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#define C3_IMG 0x20 /* CDB */
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#define C4_IMG 0x04 /* ANE */
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#define C5_IMG 0xa4 /* ? changed from b6= AA PI SIE POL */
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#define C7_IMG 0x80 /* added for SYM53C500 t. corner */
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/* Hardware Registers: offsets from io_port (base) */
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/* Control Register Set 0 */
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#define TC_LSB 0x00 /* transfer counter lsb */
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#define TC_MSB 0x01 /* transfer counter msb */
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#define SCSI_FIFO 0x02 /* scsi fifo register */
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#define CMD_REG 0x03 /* command register */
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#define STAT_REG 0x04 /* status register */
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#define DEST_ID 0x04 /* selection/reselection bus id */
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#define INT_REG 0x05 /* interrupt status register */
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#define SRTIMOUT 0x05 /* select/reselect timeout reg */
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#define SEQ_REG 0x06 /* sequence step register */
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#define SYNCPRD 0x06 /* synchronous transfer period */
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#define FIFO_FLAGS 0x07 /* indicates # of bytes in fifo */
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#define SYNCOFF 0x07 /* synchronous offset register */
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#define CONFIG1 0x08 /* configuration register */
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#define CLKCONV 0x09 /* clock conversion register */
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/* #define TESTREG 0x0A */ /* test mode register */
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#define CONFIG2 0x0B /* configuration 2 register */
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#define CONFIG3 0x0C /* configuration 3 register */
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#define CONFIG4 0x0D /* configuration 4 register */
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#define TC_HIGH 0x0E /* transfer counter high */
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/* #define FIFO_BOTTOM 0x0F */ /* reserve FIFO byte register */
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/* Control Register Set 1 */
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/* #define JUMPER_SENSE 0x00 */ /* jumper sense port reg (r/w) */
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/* #define SRAM_PTR 0x01 */ /* SRAM address pointer reg (r/w) */
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/* #define SRAM_DATA 0x02 */ /* SRAM data register (r/w) */
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#define PIO_FIFO 0x04 /* PIO FIFO registers (r/w) */
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/* #define PIO_FIFO1 0x05 */ /* */
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/* #define PIO_FIFO2 0x06 */ /* */
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/* #define PIO_FIFO3 0x07 */ /* */
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#define PIO_STATUS 0x08 /* PIO status (r/w) */
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/* #define ATA_CMD 0x09 */ /* ATA command/status reg (r/w) */
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/* #define ATA_ERR 0x0A */ /* ATA features/error reg (r/w) */
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#define PIO_FLAG 0x0B /* PIO flag interrupt enable (r/w) */
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#define CONFIG5 0x09 /* configuration 5 register */
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/* #define SIGNATURE 0x0E */ /* signature register (r) */
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/* #define CONFIG6 0x0F */ /* configuration 6 register (r) */
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#define CONFIG7 0x0d
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/* select register set 0 */
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#define REG0(x) (outb(C4_IMG, (x) + CONFIG4))
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/* select register set 1 */
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#define REG1(x) outb(C7_IMG, (x) + CONFIG7); outb(C5_IMG, (x) + CONFIG5)
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#if SYM53C500_DEBUG
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#define DEB(x) x
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#else
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#define DEB(x)
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#endif
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#if VERBOSE_SYM53C500_DEBUG
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#define VDEB(x) x
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#else
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#define VDEB(x)
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#endif
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#define LOAD_DMA_COUNT(x, count) \
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outb(count & 0xff, (x) + TC_LSB); \
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outb((count >> 8) & 0xff, (x) + TC_MSB); \
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outb((count >> 16) & 0xff, (x) + TC_HIGH);
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/* Chip commands */
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#define DMA_OP 0x80
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#define SCSI_NOP 0x00
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#define FLUSH_FIFO 0x01
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#define CHIP_RESET 0x02
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#define SCSI_RESET 0x03
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#define RESELECT 0x40
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#define SELECT_NO_ATN 0x41
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#define SELECT_ATN 0x42
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#define SELECT_ATN_STOP 0x43
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#define ENABLE_SEL 0x44
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#define DISABLE_SEL 0x45
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#define SELECT_ATN3 0x46
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#define RESELECT3 0x47
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#define TRANSFER_INFO 0x10
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#define INIT_CMD_COMPLETE 0x11
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#define MSG_ACCEPT 0x12
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#define TRANSFER_PAD 0x18
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#define SET_ATN 0x1a
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#define RESET_ATN 0x1b
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#define SEND_MSG 0x20
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#define SEND_STATUS 0x21
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#define SEND_DATA 0x22
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#define DISCONN_SEQ 0x23
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#define TERMINATE_SEQ 0x24
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#define TARG_CMD_COMPLETE 0x25
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#define DISCONN 0x27
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#define RECV_MSG 0x28
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#define RECV_CMD 0x29
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#define RECV_DATA 0x2a
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#define RECV_CMD_SEQ 0x2b
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#define TARGET_ABORT_DMA 0x04
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/* ================================================================== */
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struct scsi_info_t {
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struct pcmcia_device *p_dev;
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struct Scsi_Host *host;
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unsigned short manf_id;
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};
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/*
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* Repository for per-instance host data.
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*/
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struct sym53c500_data {
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struct scsi_cmnd *current_SC;
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int fast_pio;
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};
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struct sym53c500_cmd_priv {
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int status;
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int message;
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int phase;
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};
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enum Phase {
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idle,
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data_out,
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data_in,
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command_ph,
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status_ph,
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message_out,
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message_in
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};
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/* ================================================================== */
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static void
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chip_init(int io_port)
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{
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REG1(io_port);
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outb(0x01, io_port + PIO_STATUS);
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outb(0x00, io_port + PIO_FLAG);
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outb(C4_IMG, io_port + CONFIG4); /* REG0(io_port); */
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outb(C3_IMG, io_port + CONFIG3);
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outb(C2_IMG, io_port + CONFIG2);
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outb(C1_IMG, io_port + CONFIG1);
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outb(0x05, io_port + CLKCONV); /* clock conversion factor */
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outb(0x9C, io_port + SRTIMOUT); /* Selection timeout */
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outb(0x05, io_port + SYNCPRD); /* Synchronous transfer period */
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outb(SYNC_MODE, io_port + SYNCOFF); /* synchronous mode */
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}
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static void
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SYM53C500_int_host_reset(int io_port)
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{
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outb(C4_IMG, io_port + CONFIG4); /* REG0(io_port); */
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outb(CHIP_RESET, io_port + CMD_REG);
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outb(SCSI_NOP, io_port + CMD_REG); /* required after reset */
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outb(SCSI_RESET, io_port + CMD_REG);
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chip_init(io_port);
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}
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static __inline__ int
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SYM53C500_pio_read(int fast_pio, int base, unsigned char *request, unsigned int reqlen)
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{
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int i;
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int len; /* current scsi fifo size */
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REG1(base);
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while (reqlen) {
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i = inb(base + PIO_STATUS);
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/* VDEB(printk("pio_status=%x\n", i)); */
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if (i & 0x80)
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return 0;
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switch (i & 0x1e) {
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default:
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case 0x10: /* fifo empty */
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len = 0;
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break;
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case 0x0:
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len = 1;
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break;
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case 0x8: /* fifo 1/3 full */
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len = 42;
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break;
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case 0xc: /* fifo 2/3 full */
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len = 84;
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break;
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case 0xe: /* fifo full */
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len = 128;
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break;
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}
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if ((i & 0x40) && len == 0) { /* fifo empty and interrupt occurred */
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return 0;
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}
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if (len) {
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if (len > reqlen)
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len = reqlen;
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if (fast_pio && len > 3) {
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insl(base + PIO_FIFO, request, len >> 2);
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request += len & 0xfc;
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reqlen -= len & 0xfc;
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} else {
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while (len--) {
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*request++ = inb(base + PIO_FIFO);
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reqlen--;
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}
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}
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}
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}
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return 0;
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}
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static __inline__ int
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SYM53C500_pio_write(int fast_pio, int base, unsigned char *request, unsigned int reqlen)
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{
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int i = 0;
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int len; /* current scsi fifo size */
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REG1(base);
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while (reqlen && !(i & 0x40)) {
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i = inb(base + PIO_STATUS);
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/* VDEB(printk("pio_status=%x\n", i)); */
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if (i & 0x80) /* error */
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return 0;
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switch (i & 0x1e) {
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case 0x10:
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len = 128;
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break;
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case 0x0:
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len = 84;
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break;
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case 0x8:
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len = 42;
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break;
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case 0xc:
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len = 1;
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break;
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default:
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case 0xe:
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len = 0;
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break;
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}
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if (len) {
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if (len > reqlen)
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len = reqlen;
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if (fast_pio && len > 3) {
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outsl(base + PIO_FIFO, request, len >> 2);
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request += len & 0xfc;
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reqlen -= len & 0xfc;
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} else {
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while (len--) {
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outb(*request++, base + PIO_FIFO);
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reqlen--;
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}
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}
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}
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}
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return 0;
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}
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static irqreturn_t
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SYM53C500_intr(int irq, void *dev_id)
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{
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unsigned long flags;
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struct Scsi_Host *dev = dev_id;
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DEB(unsigned char fifo_size;)
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DEB(unsigned char seq_reg;)
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unsigned char status, int_reg;
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unsigned char pio_status;
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int port_base = dev->io_port;
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struct sym53c500_data *data =
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(struct sym53c500_data *)dev->hostdata;
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struct scsi_cmnd *curSC = data->current_SC;
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struct sym53c500_cmd_priv *scp = scsi_cmd_priv(curSC);
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int fast_pio = data->fast_pio;
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spin_lock_irqsave(dev->host_lock, flags);
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VDEB(printk("SYM53C500_intr called\n"));
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REG1(port_base);
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pio_status = inb(port_base + PIO_STATUS);
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REG0(port_base);
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status = inb(port_base + STAT_REG);
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DEB(seq_reg = inb(port_base + SEQ_REG));
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int_reg = inb(port_base + INT_REG);
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DEB(fifo_size = inb(port_base + FIFO_FLAGS) & 0x1f);
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#if SYM53C500_DEBUG
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printk("status=%02x, seq_reg=%02x, int_reg=%02x, fifo_size=%02x",
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status, seq_reg, int_reg, fifo_size);
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printk(", pio=%02x\n", pio_status);
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#endif /* SYM53C500_DEBUG */
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if (int_reg & 0x80) { /* SCSI reset intr */
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DEB(printk("SYM53C500: reset intr received\n"));
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curSC->result = DID_RESET << 16;
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goto idle_out;
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}
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if (pio_status & 0x80) {
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printk("SYM53C500: Warning: PIO error!\n");
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curSC->result = DID_ERROR << 16;
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goto idle_out;
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}
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if (status & 0x20) { /* Parity error */
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printk("SYM53C500: Warning: parity error!\n");
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curSC->result = DID_PARITY << 16;
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goto idle_out;
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}
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if (status & 0x40) { /* Gross error */
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printk("SYM53C500: Warning: gross error!\n");
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curSC->result = DID_ERROR << 16;
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goto idle_out;
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}
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if (int_reg & 0x20) { /* Disconnect */
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DEB(printk("SYM53C500: disconnect intr received\n"));
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if (scp->phase != message_in) { /* Unexpected disconnect */
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curSC->result = DID_NO_CONNECT << 16;
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} else { /* Command complete, return status and message */
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curSC->result = (scp->status & 0xff) |
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((scp->message & 0xff) << 8) | (DID_OK << 16);
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}
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goto idle_out;
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}
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switch (status & 0x07) { /* scsi phase */
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case 0x00: /* DATA-OUT */
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if (int_reg & 0x10) { /* Target requesting info transfer */
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struct scatterlist *sg;
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int i;
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scp->phase = data_out;
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VDEB(printk("SYM53C500: Data-Out phase\n"));
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outb(FLUSH_FIFO, port_base + CMD_REG);
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LOAD_DMA_COUNT(port_base, scsi_bufflen(curSC)); /* Max transfer size */
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outb(TRANSFER_INFO | DMA_OP, port_base + CMD_REG);
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scsi_for_each_sg(curSC, sg, scsi_sg_count(curSC), i) {
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SYM53C500_pio_write(fast_pio, port_base,
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sg_virt(sg), sg->length);
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}
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REG0(port_base);
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}
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break;
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case 0x01: /* DATA-IN */
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if (int_reg & 0x10) { /* Target requesting info transfer */
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struct scatterlist *sg;
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int i;
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scp->phase = data_in;
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VDEB(printk("SYM53C500: Data-In phase\n"));
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outb(FLUSH_FIFO, port_base + CMD_REG);
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LOAD_DMA_COUNT(port_base, scsi_bufflen(curSC)); /* Max transfer size */
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outb(TRANSFER_INFO | DMA_OP, port_base + CMD_REG);
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scsi_for_each_sg(curSC, sg, scsi_sg_count(curSC), i) {
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SYM53C500_pio_read(fast_pio, port_base,
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sg_virt(sg), sg->length);
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}
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REG0(port_base);
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}
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break;
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case 0x02: /* COMMAND */
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scp->phase = command_ph;
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printk("SYM53C500: Warning: Unknown interrupt occurred in command phase!\n");
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break;
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case 0x03: /* STATUS */
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scp->phase = status_ph;
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VDEB(printk("SYM53C500: Status phase\n"));
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outb(FLUSH_FIFO, port_base + CMD_REG);
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outb(INIT_CMD_COMPLETE, port_base + CMD_REG);
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break;
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case 0x04: /* Reserved */
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case 0x05: /* Reserved */
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printk("SYM53C500: WARNING: Reserved phase!!!\n");
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break;
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case 0x06: /* MESSAGE-OUT */
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DEB(printk("SYM53C500: Message-Out phase\n"));
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scp->phase = message_out;
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outb(SET_ATN, port_base + CMD_REG); /* Reject the message */
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outb(MSG_ACCEPT, port_base + CMD_REG);
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break;
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case 0x07: /* MESSAGE-IN */
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VDEB(printk("SYM53C500: Message-In phase\n"));
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scp->phase = message_in;
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scp->status = inb(port_base + SCSI_FIFO);
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scp->message = inb(port_base + SCSI_FIFO);
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VDEB(printk("SCSI FIFO size=%d\n", inb(port_base + FIFO_FLAGS) & 0x1f));
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DEB(printk("Status = %02x Message = %02x\n", scp->status, scp->message));
|
|
|
|
if (scp->message == SAVE_POINTERS || scp->message == DISCONNECT) {
|
|
outb(SET_ATN, port_base + CMD_REG); /* Reject message */
|
|
DEB(printk("Discarding SAVE_POINTERS message\n"));
|
|
}
|
|
outb(MSG_ACCEPT, port_base + CMD_REG);
|
|
break;
|
|
}
|
|
out:
|
|
spin_unlock_irqrestore(dev->host_lock, flags);
|
|
return IRQ_HANDLED;
|
|
|
|
idle_out:
|
|
scp->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 sym53c500_cmd_priv *scp = scsi_cmd_priv(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;
|
|
scp->phase = command_ph;
|
|
scp->status = 0;
|
|
scp->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 const 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 sym53c500_cmd_priv),
|
|
};
|
|
|
|
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;
|
|
const 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);
|