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873 lines
22 KiB
873 lines
22 KiB
// SPDX-License-Identifier: GPL-2.0-or-later |
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/* |
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* sym53c500_cs.c Bob Tracy ([email protected]) |
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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 ([email protected]) |
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* Original by Tom Corner ([email protected]). |
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* Adapted from NCR53c406a.h which is Copyrighted (C) 1994 |
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* Normunds Saumanis ([email protected]) |
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* |
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* SYM53C500.c |
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* Bob Tracy ([email protected]) |
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* Original driver by Tom Corner ([email protected]) was adapted |
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* from NCR53c406a.c which is Copyrighted (C) 1994, 1995, 1996 |
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* Normunds Saumanis ([email protected]) |
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* |
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* sym53c500.c |
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* Bob Tracy ([email protected]) |
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* Original by Tom Corner ([email protected]) was adapted from a |
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* driver for the Qlogic SCSI card written by |
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* David Hinds ([email protected]). |
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*/ |
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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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/* |
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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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|
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/* =============== End of user configurable parameters ============== */ |
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|
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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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|
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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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|
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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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|
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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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|
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#define SYNC_MODE 0 /* Synchronous transfer mode */ |
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|
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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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|
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/* Hardware Registers: offsets from io_port (base) */ |
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|
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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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|
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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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|
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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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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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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 (curSC->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 = (curSC->SCp.Status & 0xff) |
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| ((curSC->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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curSC->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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curSC->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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|
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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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|
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case 0x02: /* COMMAND */ |
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curSC->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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|
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case 0x03: /* STATUS */ |
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curSC->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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|
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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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|
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case 0x06: /* MESSAGE-OUT */ |
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DEB(printk("SYM53C500: Message-Out phase\n")); |
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curSC->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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curSC->SCp.phase = message_in; |
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|
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curSC->SCp.Status = inb(port_base + SCSI_FIFO); |
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curSC->SCp.Message = inb(port_base + SCSI_FIFO); |
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|
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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", curSC->SCp.Status, curSC->SCp.Message)); |
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|
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if (curSC->SCp.Message == SAVE_POINTERS || curSC->SCp.Message == DISCONNECT) { |
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outb(SET_ATN, port_base + CMD_REG); /* Reject message */ |
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DEB(printk("Discarding SAVE_POINTERS message\n")); |
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} |
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outb(MSG_ACCEPT, port_base + CMD_REG); |
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break; |
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} |
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out: |
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spin_unlock_irqrestore(dev->host_lock, flags); |
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return IRQ_HANDLED; |
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|
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idle_out: |
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curSC->SCp.phase = idle; |
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curSC->scsi_done(curSC); |
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goto out; |
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} |
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|
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static void |
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SYM53C500_release(struct pcmcia_device *link) |
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{ |
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struct scsi_info_t *info = link->priv; |
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struct Scsi_Host *shost = info->host; |
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dev_dbg(&link->dev, "SYM53C500_release\n"); |
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/* |
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* Do this before releasing/freeing resources. |
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*/ |
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scsi_remove_host(shost); |
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|
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/* |
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* Interrupts getting hosed on card removal. Try |
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* the following code, mostly from qlogicfas.c. |
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*/ |
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if (shost->irq) |
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free_irq(shost->irq, shost); |
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if (shost->io_port && shost->n_io_port) |
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release_region(shost->io_port, shost->n_io_port); |
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|
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pcmcia_disable_device(link); |
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|
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scsi_host_put(shost); |
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} /* SYM53C500_release */ |
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|
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static const char* |
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SYM53C500_info(struct Scsi_Host *SChost) |
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{ |
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static char info_msg[256]; |
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struct sym53c500_data *data = |
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(struct sym53c500_data *)SChost->hostdata; |
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|
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DEB(printk("SYM53C500_info called\n")); |
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(void)snprintf(info_msg, sizeof(info_msg), |
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"SYM53C500 at 0x%lx, IRQ %d, %s PIO mode.", |
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SChost->io_port, SChost->irq, data->fast_pio ? "fast" : "slow"); |
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return (info_msg); |
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} |
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|
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static int |
|
SYM53C500_queue_lck(struct scsi_cmnd *SCpnt, void (*done)(struct scsi_cmnd *)) |
|
{ |
|
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; |
|
data->current_SC->scsi_done = done; |
|
data->current_SC->SCp.phase = command_ph; |
|
data->current_SC->SCp.Status = 0; |
|
data->current_SC->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 device_attribute *SYM53C500_shost_attrs[] = { |
|
&SYM53C500_pio_attr, |
|
NULL, |
|
}; |
|
|
|
/* |
|
* scsi_host_template initializer |
|
*/ |
|
static struct scsi_host_template sym53c500_driver_template = { |
|
.module = THIS_MODULE, |
|
.name = "SYM53C500", |
|
.info = SYM53C500_info, |
|
.queuecommand = SYM53C500_queue, |
|
.eh_host_reset_handler = SYM53C500_host_reset, |
|
.bios_param = SYM53C500_biosparm, |
|
.proc_name = "SYM53C500", |
|
.can_queue = 1, |
|
.this_id = 7, |
|
.sg_tablesize = 32, |
|
.shost_attrs = SYM53C500_shost_attrs |
|
}; |
|
|
|
static int SYM53C500_config_check(struct pcmcia_device *p_dev, void *priv_data) |
|
{ |
|
p_dev->io_lines = 10; |
|
p_dev->resource[0]->flags &= ~IO_DATA_PATH_WIDTH; |
|
p_dev->resource[0]->flags |= IO_DATA_PATH_WIDTH_AUTO; |
|
|
|
if (p_dev->resource[0]->start == 0) |
|
return -ENODEV; |
|
|
|
return pcmcia_request_io(p_dev); |
|
} |
|
|
|
static int |
|
SYM53C500_config(struct pcmcia_device *link) |
|
{ |
|
struct scsi_info_t *info = link->priv; |
|
int ret; |
|
int irq_level, port_base; |
|
struct Scsi_Host *host; |
|
struct scsi_host_template *tpnt = &sym53c500_driver_template; |
|
struct sym53c500_data *data; |
|
|
|
dev_dbg(&link->dev, "SYM53C500_config\n"); |
|
|
|
info->manf_id = link->manf_id; |
|
|
|
ret = pcmcia_loop_config(link, SYM53C500_config_check, NULL); |
|
if (ret) |
|
goto failed; |
|
|
|
if (!link->irq) |
|
goto failed; |
|
|
|
ret = pcmcia_enable_device(link); |
|
if (ret) |
|
goto failed; |
|
|
|
/* |
|
* That's the trouble with copying liberally from another driver. |
|
* Some things probably aren't relevant, and I suspect this entire |
|
* section dealing with manufacturer IDs can be scrapped. --rct |
|
*/ |
|
if ((info->manf_id == MANFID_MACNICA) || |
|
(info->manf_id == MANFID_PIONEER) || |
|
(info->manf_id == 0x0098)) { |
|
/* set ATAcmd */ |
|
outb(0xb4, link->resource[0]->start + 0xd); |
|
outb(0x24, link->resource[0]->start + 0x9); |
|
outb(0x04, link->resource[0]->start + 0xd); |
|
} |
|
|
|
/* |
|
* irq_level == 0 implies tpnt->can_queue == 0, which |
|
* is not supported in 2.6. Thus, only irq_level > 0 |
|
* will be allowed. |
|
* |
|
* Possible port_base values are as follows: |
|
* |
|
* 0x130, 0x230, 0x280, 0x290, |
|
* 0x320, 0x330, 0x340, 0x350 |
|
*/ |
|
port_base = link->resource[0]->start; |
|
irq_level = link->irq; |
|
|
|
DEB(printk("SYM53C500: port_base=0x%x, irq=%d, fast_pio=%d\n", |
|
port_base, irq_level, USE_FAST_PIO);) |
|
|
|
chip_init(port_base); |
|
|
|
host = scsi_host_alloc(tpnt, sizeof(struct sym53c500_data)); |
|
if (!host) { |
|
printk("SYM53C500: Unable to register host, giving up.\n"); |
|
goto err_release; |
|
} |
|
|
|
data = (struct sym53c500_data *)host->hostdata; |
|
|
|
if (irq_level > 0) { |
|
if (request_irq(irq_level, SYM53C500_intr, IRQF_SHARED, "SYM53C500", host)) { |
|
printk("SYM53C500: unable to allocate IRQ %d\n", irq_level); |
|
goto err_free_scsi; |
|
} |
|
DEB(printk("SYM53C500: allocated IRQ %d\n", irq_level)); |
|
} else if (irq_level == 0) { |
|
DEB(printk("SYM53C500: No interrupts detected\n")); |
|
goto err_free_scsi; |
|
} else { |
|
DEB(printk("SYM53C500: Shouldn't get here!\n")); |
|
goto err_free_scsi; |
|
} |
|
|
|
host->unique_id = port_base; |
|
host->irq = irq_level; |
|
host->io_port = port_base; |
|
host->n_io_port = 0x10; |
|
host->dma_channel = -1; |
|
|
|
/* |
|
* Note fast_pio is set to USE_FAST_PIO by |
|
* default, but can be changed via "sysfs". |
|
*/ |
|
data->fast_pio = USE_FAST_PIO; |
|
|
|
info->host = host; |
|
|
|
if (scsi_add_host(host, NULL)) |
|
goto err_free_irq; |
|
|
|
scsi_scan_host(host); |
|
|
|
return 0; |
|
|
|
err_free_irq: |
|
free_irq(irq_level, host); |
|
err_free_scsi: |
|
scsi_host_put(host); |
|
err_release: |
|
release_region(port_base, 0x10); |
|
printk(KERN_INFO "sym53c500_cs: no SCSI devices found\n"); |
|
return -ENODEV; |
|
|
|
failed: |
|
SYM53C500_release(link); |
|
return -ENODEV; |
|
} /* SYM53C500_config */ |
|
|
|
static int sym53c500_resume(struct pcmcia_device *link) |
|
{ |
|
struct scsi_info_t *info = link->priv; |
|
|
|
/* See earlier comment about manufacturer IDs. */ |
|
if ((info->manf_id == MANFID_MACNICA) || |
|
(info->manf_id == MANFID_PIONEER) || |
|
(info->manf_id == 0x0098)) { |
|
outb(0x80, link->resource[0]->start + 0xd); |
|
outb(0x24, link->resource[0]->start + 0x9); |
|
outb(0x04, link->resource[0]->start + 0xd); |
|
} |
|
/* |
|
* If things don't work after a "resume", |
|
* this is a good place to start looking. |
|
*/ |
|
SYM53C500_int_host_reset(link->resource[0]->start); |
|
|
|
return 0; |
|
} |
|
|
|
static void |
|
SYM53C500_detach(struct pcmcia_device *link) |
|
{ |
|
dev_dbg(&link->dev, "SYM53C500_detach\n"); |
|
|
|
SYM53C500_release(link); |
|
|
|
kfree(link->priv); |
|
link->priv = NULL; |
|
} /* SYM53C500_detach */ |
|
|
|
static int |
|
SYM53C500_probe(struct pcmcia_device *link) |
|
{ |
|
struct scsi_info_t *info; |
|
|
|
dev_dbg(&link->dev, "SYM53C500_attach()\n"); |
|
|
|
/* Create new SCSI device */ |
|
info = kzalloc(sizeof(*info), GFP_KERNEL); |
|
if (!info) |
|
return -ENOMEM; |
|
info->p_dev = link; |
|
link->priv = info; |
|
link->config_flags |= CONF_ENABLE_IRQ | CONF_AUTO_SET_IO; |
|
|
|
return SYM53C500_config(link); |
|
} /* SYM53C500_attach */ |
|
|
|
MODULE_AUTHOR("Bob Tracy <[email protected]>"); |
|
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);
|
|
|