1c82ee6d3SThomas Gleixner // SPDX-License-Identifier: GPL-2.0-or-later
21da177e4SLinus Torvalds /**************************************************************************
31da177e4SLinus Torvalds * Initio 9100 device driver for Linux.
41da177e4SLinus Torvalds *
51da177e4SLinus Torvalds * Copyright (c) 1994-1998 Initio Corporation
61da177e4SLinus Torvalds * Copyright (c) 1998 Bas Vermeulen <bvermeul@blackstar.xs4all.nl>
772d39feaSAlan Cox * Copyright (c) 2004 Christoph Hellwig <hch@lst.de>
8fa195afeSAlan Cox * Copyright (c) 2007 Red Hat
91da177e4SLinus Torvalds *
101da177e4SLinus Torvalds *************************************************************************
111da177e4SLinus Torvalds *
121da177e4SLinus Torvalds * DESCRIPTION:
131da177e4SLinus Torvalds *
141da177e4SLinus Torvalds * This is the Linux low-level SCSI driver for Initio INI-9X00U/UW SCSI host
151da177e4SLinus Torvalds * adapters
161da177e4SLinus Torvalds *
171da177e4SLinus Torvalds * 08/06/97 hc - v1.01h
181da177e4SLinus Torvalds * - Support inic-940 and inic-935
191da177e4SLinus Torvalds * 09/26/97 hc - v1.01i
201da177e4SLinus Torvalds * - Make correction from J.W. Schultz suggestion
211da177e4SLinus Torvalds * 10/13/97 hc - Support reset function
221da177e4SLinus Torvalds * 10/21/97 hc - v1.01j
231da177e4SLinus Torvalds * - Support 32 LUN (SCSI 3)
241da177e4SLinus Torvalds * 01/14/98 hc - v1.01k
251da177e4SLinus Torvalds * - Fix memory allocation problem
261da177e4SLinus Torvalds * 03/04/98 hc - v1.01l
271da177e4SLinus Torvalds * - Fix tape rewind which will hang the system problem
2872d39feaSAlan Cox * - Set can_queue to initio_num_scb
291da177e4SLinus Torvalds * 06/25/98 hc - v1.01m
301da177e4SLinus Torvalds * - Get it work for kernel version >= 2.1.75
3172d39feaSAlan Cox * - Dynamic assign SCSI bus reset holding time in initio_init()
321da177e4SLinus Torvalds * 07/02/98 hc - v1.01n
331da177e4SLinus Torvalds * - Support 0002134A
341da177e4SLinus Torvalds * 08/07/98 hc - v1.01o
3572d39feaSAlan Cox * - Change the initio_abort_srb routine to use scsi_done. <01>
361da177e4SLinus Torvalds * 09/07/98 hl - v1.02
371da177e4SLinus Torvalds * - Change the INI9100U define and proc_dir_entry to
381da177e4SLinus Torvalds * reflect the newer Kernel 2.1.118, but the v1.o1o
391da177e4SLinus Torvalds * should work with Kernel 2.1.118.
401da177e4SLinus Torvalds * 09/20/98 wh - v1.02a
411da177e4SLinus Torvalds * - Support Abort command.
421da177e4SLinus Torvalds * - Handle reset routine.
431da177e4SLinus Torvalds * 09/21/98 hl - v1.03
441da177e4SLinus Torvalds * - remove comments.
451da177e4SLinus Torvalds * 12/09/98 bv - v1.03a
461da177e4SLinus Torvalds * - Removed unused code
471da177e4SLinus Torvalds * 12/13/98 bv - v1.03b
481da177e4SLinus Torvalds * - Remove cli() locking for kernels >= 2.1.95. This uses
491da177e4SLinus Torvalds * spinlocks to serialize access to the pSRB_head and
501da177e4SLinus Torvalds * pSRB_tail members of the HCS structure.
511da177e4SLinus Torvalds * 09/01/99 bv - v1.03d
521da177e4SLinus Torvalds * - Fixed a deadlock problem in SMP.
531da177e4SLinus Torvalds * 21/01/99 bv - v1.03e
541da177e4SLinus Torvalds * - Add support for the Domex 3192U PCI SCSI
551da177e4SLinus Torvalds * This is a slightly modified patch by
561da177e4SLinus Torvalds * Brian Macy <bmacy@sunshinecomputing.com>
571da177e4SLinus Torvalds * 22/02/99 bv - v1.03f
581da177e4SLinus Torvalds * - Didn't detect the INIC-950 in 2.0.x correctly.
591da177e4SLinus Torvalds * Now fixed.
601da177e4SLinus Torvalds * 05/07/99 bv - v1.03g
611da177e4SLinus Torvalds * - Changed the assumption that HZ = 100
621da177e4SLinus Torvalds * 10/17/03 mc - v1.04
631da177e4SLinus Torvalds * - added new DMA API support
641da177e4SLinus Torvalds * 06/01/04 jmd - v1.04a
651da177e4SLinus Torvalds * - Re-add reset_bus support
661da177e4SLinus Torvalds **************************************************************************/
671da177e4SLinus Torvalds
681da177e4SLinus Torvalds #include <linux/module.h>
691da177e4SLinus Torvalds #include <linux/errno.h>
701da177e4SLinus Torvalds #include <linux/delay.h>
711da177e4SLinus Torvalds #include <linux/pci.h>
721da177e4SLinus Torvalds #include <linux/init.h>
731da177e4SLinus Torvalds #include <linux/blkdev.h>
741da177e4SLinus Torvalds #include <linux/spinlock.h>
751da177e4SLinus Torvalds #include <linux/stat.h>
761da177e4SLinus Torvalds #include <linux/kernel.h>
771da177e4SLinus Torvalds #include <linux/proc_fs.h>
781da177e4SLinus Torvalds #include <linux/string.h>
791da177e4SLinus Torvalds #include <linux/interrupt.h>
801da177e4SLinus Torvalds #include <linux/ioport.h>
811da177e4SLinus Torvalds #include <linux/slab.h>
821da177e4SLinus Torvalds #include <linux/jiffies.h>
83910638aeSMatthias Gehre #include <linux/dma-mapping.h>
841da177e4SLinus Torvalds #include <asm/io.h>
851da177e4SLinus Torvalds
861da177e4SLinus Torvalds #include <scsi/scsi.h>
871da177e4SLinus Torvalds #include <scsi/scsi_cmnd.h>
881da177e4SLinus Torvalds #include <scsi/scsi_device.h>
891da177e4SLinus Torvalds #include <scsi/scsi_host.h>
901da177e4SLinus Torvalds #include <scsi/scsi_tcq.h>
911da177e4SLinus Torvalds
921da177e4SLinus Torvalds #include "initio.h"
931da177e4SLinus Torvalds
941da177e4SLinus Torvalds #define SENSE_SIZE 14
951da177e4SLinus Torvalds
961da177e4SLinus Torvalds #define i91u_MAXQUEUE 2
971da177e4SLinus Torvalds #define i91u_REVID "Initio INI-9X00U/UW SCSI device driver; Revision: 1.04a"
981da177e4SLinus Torvalds
991da177e4SLinus Torvalds #ifdef DEBUG_i91u
1001da177e4SLinus Torvalds static unsigned int i91u_debug = DEBUG_DEFAULT;
1011da177e4SLinus Torvalds #endif
1021da177e4SLinus Torvalds
10372d39feaSAlan Cox static int initio_tag_enable = 1;
1041da177e4SLinus Torvalds
1051da177e4SLinus Torvalds #ifdef DEBUG_i91u
1061da177e4SLinus Torvalds static int setup_debug = 0;
1071da177e4SLinus Torvalds #endif
1081da177e4SLinus Torvalds
10972d39feaSAlan Cox static void i91uSCBPost(u8 * pHcb, u8 * pScb);
1101da177e4SLinus Torvalds
1111da177e4SLinus Torvalds #define DEBUG_INTERRUPT 0
1121da177e4SLinus Torvalds #define DEBUG_QUEUE 0
1131da177e4SLinus Torvalds #define DEBUG_STATE 0
1141da177e4SLinus Torvalds #define INT_DISC 0
1151da177e4SLinus Torvalds
11672d39feaSAlan Cox /*--- forward references ---*/
11772d39feaSAlan Cox static struct scsi_ctrl_blk *initio_find_busy_scb(struct initio_host * host, u16 tarlun);
11872d39feaSAlan Cox static struct scsi_ctrl_blk *initio_find_done_scb(struct initio_host * host);
1191da177e4SLinus Torvalds
12072d39feaSAlan Cox static int tulip_main(struct initio_host * host);
1211da177e4SLinus Torvalds
12272d39feaSAlan Cox static int initio_next_state(struct initio_host * host);
12372d39feaSAlan Cox static int initio_state_1(struct initio_host * host);
12472d39feaSAlan Cox static int initio_state_2(struct initio_host * host);
12572d39feaSAlan Cox static int initio_state_3(struct initio_host * host);
12672d39feaSAlan Cox static int initio_state_4(struct initio_host * host);
12772d39feaSAlan Cox static int initio_state_5(struct initio_host * host);
12872d39feaSAlan Cox static int initio_state_6(struct initio_host * host);
12972d39feaSAlan Cox static int initio_state_7(struct initio_host * host);
13072d39feaSAlan Cox static int initio_xfer_data_in(struct initio_host * host);
13172d39feaSAlan Cox static int initio_xfer_data_out(struct initio_host * host);
13272d39feaSAlan Cox static int initio_xpad_in(struct initio_host * host);
13372d39feaSAlan Cox static int initio_xpad_out(struct initio_host * host);
13472d39feaSAlan Cox static int initio_status_msg(struct initio_host * host);
1351da177e4SLinus Torvalds
13672d39feaSAlan Cox static int initio_msgin(struct initio_host * host);
13772d39feaSAlan Cox static int initio_msgin_sync(struct initio_host * host);
13872d39feaSAlan Cox static int initio_msgin_accept(struct initio_host * host);
13972d39feaSAlan Cox static int initio_msgout_reject(struct initio_host * host);
14072d39feaSAlan Cox static int initio_msgin_extend(struct initio_host * host);
1411da177e4SLinus Torvalds
14272d39feaSAlan Cox static int initio_msgout_ide(struct initio_host * host);
14372d39feaSAlan Cox static int initio_msgout_abort_targ(struct initio_host * host);
14472d39feaSAlan Cox static int initio_msgout_abort_tag(struct initio_host * host);
1451da177e4SLinus Torvalds
14672d39feaSAlan Cox static int initio_bus_device_reset(struct initio_host * host);
14772d39feaSAlan Cox static void initio_select_atn(struct initio_host * host, struct scsi_ctrl_blk * scb);
14872d39feaSAlan Cox static void initio_select_atn3(struct initio_host * host, struct scsi_ctrl_blk * scb);
14972d39feaSAlan Cox static void initio_select_atn_stop(struct initio_host * host, struct scsi_ctrl_blk * scb);
15072d39feaSAlan Cox static int int_initio_busfree(struct initio_host * host);
15172d39feaSAlan Cox static int int_initio_scsi_rst(struct initio_host * host);
15272d39feaSAlan Cox static int int_initio_bad_seq(struct initio_host * host);
15372d39feaSAlan Cox static int int_initio_resel(struct initio_host * host);
15472d39feaSAlan Cox static int initio_sync_done(struct initio_host * host);
15572d39feaSAlan Cox static int wdtr_done(struct initio_host * host);
15672d39feaSAlan Cox static int wait_tulip(struct initio_host * host);
15772d39feaSAlan Cox static int initio_wait_done_disc(struct initio_host * host);
15872d39feaSAlan Cox static int initio_wait_disc(struct initio_host * host);
15972d39feaSAlan Cox static void tulip_scsi(struct initio_host * host);
16072d39feaSAlan Cox static int initio_post_scsi_rst(struct initio_host * host);
1611da177e4SLinus Torvalds
16272d39feaSAlan Cox static void initio_se2_ew_en(unsigned long base);
16372d39feaSAlan Cox static void initio_se2_ew_ds(unsigned long base);
16472d39feaSAlan Cox static int initio_se2_rd_all(unsigned long base);
16572d39feaSAlan Cox static void initio_se2_update_all(unsigned long base); /* setup default pattern */
16672d39feaSAlan Cox static void initio_read_eeprom(unsigned long base);
1671da177e4SLinus Torvalds
1681da177e4SLinus Torvalds /* ---- INTERNAL VARIABLES ---- */
1691da177e4SLinus Torvalds
1701da177e4SLinus Torvalds static NVRAM i91unvram;
1711da177e4SLinus Torvalds static NVRAM *i91unvramp;
1721da177e4SLinus Torvalds
17372d39feaSAlan Cox static u8 i91udftNvRam[64] =
1741da177e4SLinus Torvalds {
1751da177e4SLinus Torvalds /*----------- header -----------*/
1761da177e4SLinus Torvalds 0x25, 0xc9, /* Signature */
1771da177e4SLinus Torvalds 0x40, /* Size */
1781da177e4SLinus Torvalds 0x01, /* Revision */
1791da177e4SLinus Torvalds /* -- Host Adapter Structure -- */
1801da177e4SLinus Torvalds 0x95, /* ModelByte0 */
1811da177e4SLinus Torvalds 0x00, /* ModelByte1 */
1821da177e4SLinus Torvalds 0x00, /* ModelInfo */
1831da177e4SLinus Torvalds 0x01, /* NumOfCh */
1841da177e4SLinus Torvalds NBC1_DEFAULT, /* BIOSConfig1 */
1851da177e4SLinus Torvalds 0, /* BIOSConfig2 */
1861da177e4SLinus Torvalds 0, /* HAConfig1 */
1871da177e4SLinus Torvalds 0, /* HAConfig2 */
1881da177e4SLinus Torvalds /* SCSI channel 0 and target Structure */
1891da177e4SLinus Torvalds 7, /* SCSIid */
1901da177e4SLinus Torvalds NCC1_DEFAULT, /* SCSIconfig1 */
1911da177e4SLinus Torvalds 0, /* SCSIconfig2 */
1921da177e4SLinus Torvalds 0x10, /* NumSCSItarget */
1931da177e4SLinus Torvalds
1941da177e4SLinus Torvalds NTC_DEFAULT, NTC_DEFAULT, NTC_DEFAULT, NTC_DEFAULT,
1951da177e4SLinus Torvalds NTC_DEFAULT, NTC_DEFAULT, NTC_DEFAULT, NTC_DEFAULT,
1961da177e4SLinus Torvalds NTC_DEFAULT, NTC_DEFAULT, NTC_DEFAULT, NTC_DEFAULT,
1971da177e4SLinus Torvalds NTC_DEFAULT, NTC_DEFAULT, NTC_DEFAULT, NTC_DEFAULT,
1981da177e4SLinus Torvalds
1991da177e4SLinus Torvalds /* SCSI channel 1 and target Structure */
2001da177e4SLinus Torvalds 7, /* SCSIid */
2011da177e4SLinus Torvalds NCC1_DEFAULT, /* SCSIconfig1 */
2021da177e4SLinus Torvalds 0, /* SCSIconfig2 */
2031da177e4SLinus Torvalds 0x10, /* NumSCSItarget */
2041da177e4SLinus Torvalds
2051da177e4SLinus Torvalds NTC_DEFAULT, NTC_DEFAULT, NTC_DEFAULT, NTC_DEFAULT,
2061da177e4SLinus Torvalds NTC_DEFAULT, NTC_DEFAULT, NTC_DEFAULT, NTC_DEFAULT,
2071da177e4SLinus Torvalds NTC_DEFAULT, NTC_DEFAULT, NTC_DEFAULT, NTC_DEFAULT,
2081da177e4SLinus Torvalds NTC_DEFAULT, NTC_DEFAULT, NTC_DEFAULT, NTC_DEFAULT,
2091da177e4SLinus Torvalds 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
2101da177e4SLinus Torvalds 0, 0}; /* - CheckSum - */
2111da177e4SLinus Torvalds
2121da177e4SLinus Torvalds
21372d39feaSAlan Cox static u8 initio_rate_tbl[8] = /* fast 20 */
2141da177e4SLinus Torvalds {
21525985edcSLucas De Marchi /* nanosecond divide by 4 */
2161da177e4SLinus Torvalds 12, /* 50ns, 20M */
2171da177e4SLinus Torvalds 18, /* 75ns, 13.3M */
2181da177e4SLinus Torvalds 25, /* 100ns, 10M */
2191da177e4SLinus Torvalds 31, /* 125ns, 8M */
2201da177e4SLinus Torvalds 37, /* 150ns, 6.6M */
2211da177e4SLinus Torvalds 43, /* 175ns, 5.7M */
2221da177e4SLinus Torvalds 50, /* 200ns, 5M */
2231da177e4SLinus Torvalds 62 /* 250ns, 4M */
2241da177e4SLinus Torvalds };
2251da177e4SLinus Torvalds
initio_do_pause(unsigned amount)22672d39feaSAlan Cox static void initio_do_pause(unsigned amount)
22772d39feaSAlan Cox {
22872d39feaSAlan Cox /* Pause for amount jiffies */
2291da177e4SLinus Torvalds unsigned long the_time = jiffies + amount;
2301da177e4SLinus Torvalds
23172d39feaSAlan Cox while (time_before_eq(jiffies, the_time))
23272d39feaSAlan Cox cpu_relax();
2331da177e4SLinus Torvalds }
2341da177e4SLinus Torvalds
2351da177e4SLinus Torvalds /*-- forward reference --*/
2361da177e4SLinus Torvalds
2371da177e4SLinus Torvalds /******************************************************************
2381da177e4SLinus Torvalds Input: instruction for Serial E2PROM
2391da177e4SLinus Torvalds
2401da177e4SLinus Torvalds EX: se2_rd(0 call se2_instr() to send address and read command
2411da177e4SLinus Torvalds
2421da177e4SLinus Torvalds StartBit OP_Code Address Data
2431da177e4SLinus Torvalds --------- -------- ------------------ -------
2441da177e4SLinus Torvalds 1 1 , 0 A5,A4,A3,A2,A1,A0 D15-D0
2451da177e4SLinus Torvalds
2461da177e4SLinus Torvalds +-----------------------------------------------------
2471da177e4SLinus Torvalds |
2481da177e4SLinus Torvalds CS -----+
2491da177e4SLinus Torvalds +--+ +--+ +--+ +--+ +--+
2501da177e4SLinus Torvalds ^ | ^ | ^ | ^ | ^ |
2511da177e4SLinus Torvalds | | | | | | | | | |
2521da177e4SLinus Torvalds CLK -------+ +--+ +--+ +--+ +--+ +--
2531da177e4SLinus Torvalds (leading edge trigger)
2541da177e4SLinus Torvalds
2551da177e4SLinus Torvalds +--1-----1--+
2561da177e4SLinus Torvalds | SB OP | OP A5 A4
2571da177e4SLinus Torvalds DI ----+ +--0------------------
2581da177e4SLinus Torvalds (address and cmd sent to nvram)
2591da177e4SLinus Torvalds
2601da177e4SLinus Torvalds -------------------------------------------+
2611da177e4SLinus Torvalds |
2621da177e4SLinus Torvalds DO +---
2631da177e4SLinus Torvalds (data sent from nvram)
2641da177e4SLinus Torvalds
2651da177e4SLinus Torvalds
2661da177e4SLinus Torvalds ******************************************************************/
26772d39feaSAlan Cox
26872d39feaSAlan Cox /**
26972d39feaSAlan Cox * initio_se2_instr - bitbang an instruction
27072d39feaSAlan Cox * @base: Base of InitIO controller
27172d39feaSAlan Cox * @instr: Instruction for serial E2PROM
27272d39feaSAlan Cox *
27372d39feaSAlan Cox * Bitbang an instruction out to the serial E2Prom
27472d39feaSAlan Cox */
27572d39feaSAlan Cox
initio_se2_instr(unsigned long base,u8 instr)27672d39feaSAlan Cox static void initio_se2_instr(unsigned long base, u8 instr)
2771da177e4SLinus Torvalds {
2781da177e4SLinus Torvalds int i;
27972d39feaSAlan Cox u8 b;
2801da177e4SLinus Torvalds
28172d39feaSAlan Cox outb(SE2CS | SE2DO, base + TUL_NVRAM); /* cs+start bit */
28272d39feaSAlan Cox udelay(30);
28372d39feaSAlan Cox outb(SE2CS | SE2CLK | SE2DO, base + TUL_NVRAM); /* +CLK */
28472d39feaSAlan Cox udelay(30);
2851da177e4SLinus Torvalds
2861da177e4SLinus Torvalds for (i = 0; i < 8; i++) {
2871da177e4SLinus Torvalds if (instr & 0x80)
2881da177e4SLinus Torvalds b = SE2CS | SE2DO; /* -CLK+dataBit */
2891da177e4SLinus Torvalds else
2901da177e4SLinus Torvalds b = SE2CS; /* -CLK */
29172d39feaSAlan Cox outb(b, base + TUL_NVRAM);
29272d39feaSAlan Cox udelay(30);
29372d39feaSAlan Cox outb(b | SE2CLK, base + TUL_NVRAM); /* +CLK */
29472d39feaSAlan Cox udelay(30);
2951da177e4SLinus Torvalds instr <<= 1;
2961da177e4SLinus Torvalds }
29772d39feaSAlan Cox outb(SE2CS, base + TUL_NVRAM); /* -CLK */
29872d39feaSAlan Cox udelay(30);
2991da177e4SLinus Torvalds }
3001da177e4SLinus Torvalds
3011da177e4SLinus Torvalds
30272d39feaSAlan Cox /**
30372d39feaSAlan Cox * initio_se2_ew_en - Enable erase/write
30472d39feaSAlan Cox * @base: Base address of InitIO controller
30572d39feaSAlan Cox *
30672d39feaSAlan Cox * Enable erase/write state of serial EEPROM
30772d39feaSAlan Cox */
initio_se2_ew_en(unsigned long base)30872d39feaSAlan Cox void initio_se2_ew_en(unsigned long base)
3091da177e4SLinus Torvalds {
31072d39feaSAlan Cox initio_se2_instr(base, 0x30); /* EWEN */
31172d39feaSAlan Cox outb(0, base + TUL_NVRAM); /* -CS */
31272d39feaSAlan Cox udelay(30);
3131da177e4SLinus Torvalds }
3141da177e4SLinus Torvalds
3151da177e4SLinus Torvalds
31672d39feaSAlan Cox /**
31772d39feaSAlan Cox * initio_se2_ew_ds - Disable erase/write
31872d39feaSAlan Cox * @base: Base address of InitIO controller
31972d39feaSAlan Cox *
32072d39feaSAlan Cox * Disable erase/write state of serial EEPROM
32172d39feaSAlan Cox */
initio_se2_ew_ds(unsigned long base)32272d39feaSAlan Cox void initio_se2_ew_ds(unsigned long base)
3231da177e4SLinus Torvalds {
32472d39feaSAlan Cox initio_se2_instr(base, 0); /* EWDS */
32572d39feaSAlan Cox outb(0, base + TUL_NVRAM); /* -CS */
32672d39feaSAlan Cox udelay(30);
3271da177e4SLinus Torvalds }
3281da177e4SLinus Torvalds
3291da177e4SLinus Torvalds
33072d39feaSAlan Cox /**
33172d39feaSAlan Cox * initio_se2_rd - read E2PROM word
33272d39feaSAlan Cox * @base: Base of InitIO controller
33372d39feaSAlan Cox * @addr: Address of word in E2PROM
33472d39feaSAlan Cox *
33572d39feaSAlan Cox * Read a word from the NV E2PROM device
33672d39feaSAlan Cox */
initio_se2_rd(unsigned long base,u8 addr)33772d39feaSAlan Cox static u16 initio_se2_rd(unsigned long base, u8 addr)
3381da177e4SLinus Torvalds {
33972d39feaSAlan Cox u8 instr, rb;
34072d39feaSAlan Cox u16 val = 0;
3411da177e4SLinus Torvalds int i;
3421da177e4SLinus Torvalds
34372d39feaSAlan Cox instr = (u8) (addr | 0x80);
34472d39feaSAlan Cox initio_se2_instr(base, instr); /* READ INSTR */
3451da177e4SLinus Torvalds
3461da177e4SLinus Torvalds for (i = 15; i >= 0; i--) {
34772d39feaSAlan Cox outb(SE2CS | SE2CLK, base + TUL_NVRAM); /* +CLK */
34872d39feaSAlan Cox udelay(30);
34972d39feaSAlan Cox outb(SE2CS, base + TUL_NVRAM); /* -CLK */
3501da177e4SLinus Torvalds
3511da177e4SLinus Torvalds /* sample data after the following edge of clock */
35272d39feaSAlan Cox rb = inb(base + TUL_NVRAM);
35372d39feaSAlan Cox rb &= SE2DI;
35472d39feaSAlan Cox val += (rb << i);
35572d39feaSAlan Cox udelay(30); /* 6/20/95 */
3561da177e4SLinus Torvalds }
3571da177e4SLinus Torvalds
35872d39feaSAlan Cox outb(0, base + TUL_NVRAM); /* no chip select */
35972d39feaSAlan Cox udelay(30);
36072d39feaSAlan Cox return val;
3611da177e4SLinus Torvalds }
3621da177e4SLinus Torvalds
36372d39feaSAlan Cox /**
36472d39feaSAlan Cox * initio_se2_wr - read E2PROM word
36572d39feaSAlan Cox * @base: Base of InitIO controller
36672d39feaSAlan Cox * @addr: Address of word in E2PROM
36772d39feaSAlan Cox * @val: Value to write
36872d39feaSAlan Cox *
36972d39feaSAlan Cox * Write a word to the NV E2PROM device. Used when recovering from
37072d39feaSAlan Cox * a problem with the NV.
37172d39feaSAlan Cox */
initio_se2_wr(unsigned long base,u8 addr,u16 val)37272d39feaSAlan Cox static void initio_se2_wr(unsigned long base, u8 addr, u16 val)
3731da177e4SLinus Torvalds {
37472d39feaSAlan Cox u8 rb;
37572d39feaSAlan Cox u8 instr;
3761da177e4SLinus Torvalds int i;
3771da177e4SLinus Torvalds
37872d39feaSAlan Cox instr = (u8) (addr | 0x40);
37972d39feaSAlan Cox initio_se2_instr(base, instr); /* WRITE INSTR */
3801da177e4SLinus Torvalds for (i = 15; i >= 0; i--) {
38172d39feaSAlan Cox if (val & 0x8000)
38272d39feaSAlan Cox outb(SE2CS | SE2DO, base + TUL_NVRAM); /* -CLK+dataBit 1 */
3831da177e4SLinus Torvalds else
38472d39feaSAlan Cox outb(SE2CS, base + TUL_NVRAM); /* -CLK+dataBit 0 */
38572d39feaSAlan Cox udelay(30);
38672d39feaSAlan Cox outb(SE2CS | SE2CLK, base + TUL_NVRAM); /* +CLK */
38772d39feaSAlan Cox udelay(30);
38872d39feaSAlan Cox val <<= 1;
3891da177e4SLinus Torvalds }
39072d39feaSAlan Cox outb(SE2CS, base + TUL_NVRAM); /* -CLK */
39172d39feaSAlan Cox udelay(30);
39272d39feaSAlan Cox outb(0, base + TUL_NVRAM); /* -CS */
39372d39feaSAlan Cox udelay(30);
3941da177e4SLinus Torvalds
39572d39feaSAlan Cox outb(SE2CS, base + TUL_NVRAM); /* +CS */
39672d39feaSAlan Cox udelay(30);
3971da177e4SLinus Torvalds
3981da177e4SLinus Torvalds for (;;) {
39972d39feaSAlan Cox outb(SE2CS | SE2CLK, base + TUL_NVRAM); /* +CLK */
40072d39feaSAlan Cox udelay(30);
40172d39feaSAlan Cox outb(SE2CS, base + TUL_NVRAM); /* -CLK */
40272d39feaSAlan Cox udelay(30);
40372d39feaSAlan Cox if ((rb = inb(base + TUL_NVRAM)) & SE2DI)
4041da177e4SLinus Torvalds break; /* write complete */
4051da177e4SLinus Torvalds }
40672d39feaSAlan Cox outb(0, base + TUL_NVRAM); /* -CS */
4071da177e4SLinus Torvalds }
4081da177e4SLinus Torvalds
40972d39feaSAlan Cox /**
41072d39feaSAlan Cox * initio_se2_rd_all - read hostadapter NV configuration
41172d39feaSAlan Cox * @base: Base address of InitIO controller
41272d39feaSAlan Cox *
41372d39feaSAlan Cox * Reads the E2PROM data into main memory. Ensures that the checksum
41472d39feaSAlan Cox * and header marker are valid. Returns 1 on success -1 on error.
41572d39feaSAlan Cox */
4161da177e4SLinus Torvalds
initio_se2_rd_all(unsigned long base)41772d39feaSAlan Cox static int initio_se2_rd_all(unsigned long base)
4181da177e4SLinus Torvalds {
4191da177e4SLinus Torvalds int i;
42072d39feaSAlan Cox u16 chksum = 0;
42172d39feaSAlan Cox u16 *np;
4221da177e4SLinus Torvalds
4231da177e4SLinus Torvalds i91unvramp = &i91unvram;
42472d39feaSAlan Cox np = (u16 *) i91unvramp;
42572d39feaSAlan Cox for (i = 0; i < 32; i++)
42672d39feaSAlan Cox *np++ = initio_se2_rd(base, i);
4271da177e4SLinus Torvalds
42872d39feaSAlan Cox /* Is signature "ini" ok ? */
4291da177e4SLinus Torvalds if (i91unvramp->NVM_Signature != INI_SIGNATURE)
4301da177e4SLinus Torvalds return -1;
43172d39feaSAlan Cox /* Is ckecksum ok ? */
43272d39feaSAlan Cox np = (u16 *) i91unvramp;
4331da177e4SLinus Torvalds for (i = 0; i < 31; i++)
4341da177e4SLinus Torvalds chksum += *np++;
43572d39feaSAlan Cox if (i91unvramp->NVM_CheckSum != chksum)
4361da177e4SLinus Torvalds return -1;
4371da177e4SLinus Torvalds return 1;
4381da177e4SLinus Torvalds }
4391da177e4SLinus Torvalds
44072d39feaSAlan Cox /**
44172d39feaSAlan Cox * initio_se2_update_all - Update E2PROM
44272d39feaSAlan Cox * @base: Base of InitIO controller
44372d39feaSAlan Cox *
44472d39feaSAlan Cox * Update the E2PROM by wrting any changes into the E2PROM
44572d39feaSAlan Cox * chip, rewriting the checksum.
44672d39feaSAlan Cox */
initio_se2_update_all(unsigned long base)44772d39feaSAlan Cox static void initio_se2_update_all(unsigned long base)
4481da177e4SLinus Torvalds { /* setup default pattern */
4491da177e4SLinus Torvalds int i;
45072d39feaSAlan Cox u16 chksum = 0;
45172d39feaSAlan Cox u16 *np, *np1;
4521da177e4SLinus Torvalds
4531da177e4SLinus Torvalds i91unvramp = &i91unvram;
4541da177e4SLinus Torvalds /* Calculate checksum first */
45572d39feaSAlan Cox np = (u16 *) i91udftNvRam;
4561da177e4SLinus Torvalds for (i = 0; i < 31; i++)
4571da177e4SLinus Torvalds chksum += *np++;
45872d39feaSAlan Cox *np = chksum;
45972d39feaSAlan Cox initio_se2_ew_en(base); /* Enable write */
4601da177e4SLinus Torvalds
46172d39feaSAlan Cox np = (u16 *) i91udftNvRam;
46272d39feaSAlan Cox np1 = (u16 *) i91unvramp;
4631da177e4SLinus Torvalds for (i = 0; i < 32; i++, np++, np1++) {
46472d39feaSAlan Cox if (*np != *np1)
46572d39feaSAlan Cox initio_se2_wr(base, i, *np);
4661da177e4SLinus Torvalds }
46772d39feaSAlan Cox initio_se2_ew_ds(base); /* Disable write */
4681da177e4SLinus Torvalds }
4691da177e4SLinus Torvalds
47072d39feaSAlan Cox /**
47172d39feaSAlan Cox * initio_read_eeprom - Retrieve configuration
47272d39feaSAlan Cox * @base: Base of InitIO Host Adapter
47372d39feaSAlan Cox *
47472d39feaSAlan Cox * Retrieve the host adapter configuration data from E2Prom. If the
47572d39feaSAlan Cox * data is invalid then the defaults are used and are also restored
47672d39feaSAlan Cox * into the E2PROM. This forms the access point for the SCSI driver
47772d39feaSAlan Cox * into the E2PROM layer, the other functions for the E2PROM are all
47872d39feaSAlan Cox * internal use.
47972d39feaSAlan Cox *
48072d39feaSAlan Cox * Must be called single threaded, uses a shared global area.
48172d39feaSAlan Cox */
4821da177e4SLinus Torvalds
initio_read_eeprom(unsigned long base)48372d39feaSAlan Cox static void initio_read_eeprom(unsigned long base)
4841da177e4SLinus Torvalds {
48572d39feaSAlan Cox u8 gctrl;
4861da177e4SLinus Torvalds
4871da177e4SLinus Torvalds i91unvramp = &i91unvram;
48872d39feaSAlan Cox /* Enable EEProm programming */
48972d39feaSAlan Cox gctrl = inb(base + TUL_GCTRL);
49072d39feaSAlan Cox outb(gctrl | TUL_GCTRL_EEPROM_BIT, base + TUL_GCTRL);
49172d39feaSAlan Cox if (initio_se2_rd_all(base) != 1) {
49272d39feaSAlan Cox initio_se2_update_all(base); /* setup default pattern */
49372d39feaSAlan Cox initio_se2_rd_all(base); /* load again */
4941da177e4SLinus Torvalds }
49572d39feaSAlan Cox /* Disable EEProm programming */
49672d39feaSAlan Cox gctrl = inb(base + TUL_GCTRL);
49772d39feaSAlan Cox outb(gctrl & ~TUL_GCTRL_EEPROM_BIT, base + TUL_GCTRL);
4981da177e4SLinus Torvalds }
4991da177e4SLinus Torvalds
50072d39feaSAlan Cox /**
50172d39feaSAlan Cox * initio_stop_bm - stop bus master
50272d39feaSAlan Cox * @host: InitIO we are stopping
50372d39feaSAlan Cox *
5043ad2f3fbSDaniel Mack * Stop any pending DMA operation, aborting the DMA if necessary
50572d39feaSAlan Cox */
5061da177e4SLinus Torvalds
initio_stop_bm(struct initio_host * host)50772d39feaSAlan Cox static void initio_stop_bm(struct initio_host * host)
5081da177e4SLinus Torvalds {
5091da177e4SLinus Torvalds
51072d39feaSAlan Cox if (inb(host->addr + TUL_XStatus) & XPEND) { /* if DMA xfer is pending, abort DMA xfer */
51172d39feaSAlan Cox outb(TAX_X_ABT | TAX_X_CLR_FIFO, host->addr + TUL_XCmd);
5121da177e4SLinus Torvalds /* wait Abort DMA xfer done */
51372d39feaSAlan Cox while ((inb(host->addr + TUL_Int) & XABT) == 0)
51472d39feaSAlan Cox cpu_relax();
5151da177e4SLinus Torvalds }
51672d39feaSAlan Cox outb(TSC_FLUSH_FIFO, host->addr + TUL_SCtrl0);
5171da177e4SLinus Torvalds }
5181da177e4SLinus Torvalds
51972d39feaSAlan Cox /**
52072d39feaSAlan Cox * initio_reset_scsi - Reset SCSI host controller
52172d39feaSAlan Cox * @host: InitIO host to reset
52272d39feaSAlan Cox * @seconds: Recovery time
52372d39feaSAlan Cox *
52472d39feaSAlan Cox * Perform a full reset of the SCSI subsystem.
52572d39feaSAlan Cox */
52672d39feaSAlan Cox
initio_reset_scsi(struct initio_host * host,int seconds)52772d39feaSAlan Cox static int initio_reset_scsi(struct initio_host * host, int seconds)
5281da177e4SLinus Torvalds {
52972d39feaSAlan Cox outb(TSC_RST_BUS, host->addr + TUL_SCtrl0);
5301da177e4SLinus Torvalds
53172d39feaSAlan Cox while (!((host->jsint = inb(host->addr + TUL_SInt)) & TSS_SCSIRST_INT))
53272d39feaSAlan Cox cpu_relax();
5331da177e4SLinus Torvalds
5341da177e4SLinus Torvalds /* reset tulip chip */
53572d39feaSAlan Cox outb(0, host->addr + TUL_SSignal);
5361da177e4SLinus Torvalds
5371da177e4SLinus Torvalds /* Stall for a while, wait for target's firmware ready,make it 2 sec ! */
5381da177e4SLinus Torvalds /* SONY 5200 tape drive won't work if only stall for 1 sec */
53972d39feaSAlan Cox /* FIXME: this is a very long busy wait right now */
54072d39feaSAlan Cox initio_do_pause(seconds * HZ);
5411da177e4SLinus Torvalds
54272d39feaSAlan Cox inb(host->addr + TUL_SInt);
54372d39feaSAlan Cox return SCSI_RESET_SUCCESS;
5441da177e4SLinus Torvalds }
5451da177e4SLinus Torvalds
54672d39feaSAlan Cox /**
54772d39feaSAlan Cox * initio_init - set up an InitIO host adapter
54872d39feaSAlan Cox * @host: InitIO host adapter
54972d39feaSAlan Cox * @bios_addr: BIOS address
55072d39feaSAlan Cox *
55172d39feaSAlan Cox * Set up the host adapter and devices according to the configuration
55272d39feaSAlan Cox * retrieved from the E2PROM.
55372d39feaSAlan Cox *
55472d39feaSAlan Cox * Locking: Calls E2PROM layer code which is not re-enterable so must
55572d39feaSAlan Cox * run single threaded for now.
55672d39feaSAlan Cox */
55772d39feaSAlan Cox
initio_init(struct initio_host * host,u8 * bios_addr)55872d39feaSAlan Cox static void initio_init(struct initio_host * host, u8 *bios_addr)
5591da177e4SLinus Torvalds {
5601da177e4SLinus Torvalds int i;
56172d39feaSAlan Cox u8 *flags;
56272d39feaSAlan Cox u8 *heads;
5631da177e4SLinus Torvalds
56472d39feaSAlan Cox /* Get E2Prom configuration */
56572d39feaSAlan Cox initio_read_eeprom(host->addr);
5661da177e4SLinus Torvalds if (i91unvramp->NVM_SCSIInfo[0].NVM_NumOfTarg == 8)
56772d39feaSAlan Cox host->max_tar = 8;
5681da177e4SLinus Torvalds else
56972d39feaSAlan Cox host->max_tar = 16;
5701da177e4SLinus Torvalds
57172d39feaSAlan Cox host->config = i91unvramp->NVM_SCSIInfo[0].NVM_ChConfig1;
5721da177e4SLinus Torvalds
57372d39feaSAlan Cox host->scsi_id = i91unvramp->NVM_SCSIInfo[0].NVM_ChSCSIID;
57472d39feaSAlan Cox host->idmask = ~(1 << host->scsi_id);
5751da177e4SLinus Torvalds
57644456d37SOlaf Hering #ifdef CHK_PARITY
5771da177e4SLinus Torvalds /* Enable parity error response */
57872d39feaSAlan Cox outb(inb(host->addr + TUL_PCMD) | 0x40, host->addr + TUL_PCMD);
5791da177e4SLinus Torvalds #endif
5801da177e4SLinus Torvalds
5811da177e4SLinus Torvalds /* Mask all the interrupt */
58272d39feaSAlan Cox outb(0x1F, host->addr + TUL_Mask);
5831da177e4SLinus Torvalds
58472d39feaSAlan Cox initio_stop_bm(host);
5851da177e4SLinus Torvalds /* --- Initialize the tulip --- */
58672d39feaSAlan Cox outb(TSC_RST_CHIP, host->addr + TUL_SCtrl0);
5871da177e4SLinus Torvalds
5881da177e4SLinus Torvalds /* program HBA's SCSI ID */
58972d39feaSAlan Cox outb(host->scsi_id << 4, host->addr + TUL_SScsiId);
5901da177e4SLinus Torvalds
5911da177e4SLinus Torvalds /* Enable Initiator Mode ,phase latch,alternate sync period mode,
5921da177e4SLinus Torvalds disable SCSI reset */
59372d39feaSAlan Cox if (host->config & HCC_EN_PAR)
59472d39feaSAlan Cox host->sconf1 = (TSC_INITDEFAULT | TSC_EN_SCSI_PAR);
5951da177e4SLinus Torvalds else
59672d39feaSAlan Cox host->sconf1 = (TSC_INITDEFAULT);
59772d39feaSAlan Cox outb(host->sconf1, host->addr + TUL_SConfig);
5981da177e4SLinus Torvalds
5991da177e4SLinus Torvalds /* Enable HW reselect */
60072d39feaSAlan Cox outb(TSC_HW_RESELECT, host->addr + TUL_SCtrl1);
6011da177e4SLinus Torvalds
60272d39feaSAlan Cox outb(0, host->addr + TUL_SPeriod);
6031da177e4SLinus Torvalds
6041da177e4SLinus Torvalds /* selection time out = 250 ms */
60572d39feaSAlan Cox outb(153, host->addr + TUL_STimeOut);
6061da177e4SLinus Torvalds
60772d39feaSAlan Cox /* Enable SCSI terminator */
60872d39feaSAlan Cox outb((host->config & (HCC_ACT_TERM1 | HCC_ACT_TERM2)),
60972d39feaSAlan Cox host->addr + TUL_XCtrl);
61072d39feaSAlan Cox outb(((host->config & HCC_AUTO_TERM) >> 4) |
61172d39feaSAlan Cox (inb(host->addr + TUL_GCTRL1) & 0xFE),
61272d39feaSAlan Cox host->addr + TUL_GCTRL1);
6131da177e4SLinus Torvalds
6141da177e4SLinus Torvalds for (i = 0,
61572d39feaSAlan Cox flags = & (i91unvramp->NVM_SCSIInfo[0].NVM_Targ0Config),
61672d39feaSAlan Cox heads = bios_addr + 0x180;
61772d39feaSAlan Cox i < host->max_tar;
61872d39feaSAlan Cox i++, flags++) {
61972d39feaSAlan Cox host->targets[i].flags = *flags & ~(TCF_SYNC_DONE | TCF_WDTR_DONE);
62072d39feaSAlan Cox if (host->targets[i].flags & TCF_EN_255)
62172d39feaSAlan Cox host->targets[i].drv_flags = TCF_DRV_255_63;
6221da177e4SLinus Torvalds else
62372d39feaSAlan Cox host->targets[i].drv_flags = 0;
62472d39feaSAlan Cox host->targets[i].js_period = 0;
62572d39feaSAlan Cox host->targets[i].sconfig0 = host->sconf1;
62672d39feaSAlan Cox host->targets[i].heads = *heads++;
62772d39feaSAlan Cox if (host->targets[i].heads == 255)
62872d39feaSAlan Cox host->targets[i].drv_flags = TCF_DRV_255_63;
6291da177e4SLinus Torvalds else
63072d39feaSAlan Cox host->targets[i].drv_flags = 0;
63172d39feaSAlan Cox host->targets[i].sectors = *heads++;
63272d39feaSAlan Cox host->targets[i].flags &= ~TCF_BUSY;
63372d39feaSAlan Cox host->act_tags[i] = 0;
63472d39feaSAlan Cox host->max_tags[i] = 0xFF;
6351da177e4SLinus Torvalds } /* for */
6361da177e4SLinus Torvalds printk("i91u: PCI Base=0x%04X, IRQ=%d, BIOS=0x%04X0, SCSI ID=%d\n",
637e9e42fafSAlan Cox host->addr, host->pci_dev->irq,
63872d39feaSAlan Cox host->bios_addr, host->scsi_id);
63972d39feaSAlan Cox /* Reset SCSI Bus */
64072d39feaSAlan Cox if (host->config & HCC_SCSI_RESET) {
64172d39feaSAlan Cox printk(KERN_INFO "i91u: Reset SCSI Bus ... \n");
64272d39feaSAlan Cox initio_reset_scsi(host, 10);
6431da177e4SLinus Torvalds }
64472d39feaSAlan Cox outb(0x17, host->addr + TUL_SCFG1);
64572d39feaSAlan Cox outb(0xE9, host->addr + TUL_SIntEnable);
6461da177e4SLinus Torvalds }
6471da177e4SLinus Torvalds
64872d39feaSAlan Cox /**
64972d39feaSAlan Cox * initio_alloc_scb - Allocate an SCB
65072d39feaSAlan Cox * @host: InitIO host we are allocating for
65172d39feaSAlan Cox *
65272d39feaSAlan Cox * Walk the SCB list for the controller and allocate a free SCB if
65372d39feaSAlan Cox * one exists.
65472d39feaSAlan Cox */
initio_alloc_scb(struct initio_host * host)65572d39feaSAlan Cox static struct scsi_ctrl_blk *initio_alloc_scb(struct initio_host *host)
6561da177e4SLinus Torvalds {
65772d39feaSAlan Cox struct scsi_ctrl_blk *scb;
65872d39feaSAlan Cox unsigned long flags;
65972d39feaSAlan Cox
66072d39feaSAlan Cox spin_lock_irqsave(&host->avail_lock, flags);
66172d39feaSAlan Cox if ((scb = host->first_avail) != NULL) {
6621da177e4SLinus Torvalds #if DEBUG_QUEUE
66372d39feaSAlan Cox printk("find scb at %p\n", scb);
6641da177e4SLinus Torvalds #endif
66572d39feaSAlan Cox if ((host->first_avail = scb->next) == NULL)
66672d39feaSAlan Cox host->last_avail = NULL;
66772d39feaSAlan Cox scb->next = NULL;
66872d39feaSAlan Cox scb->status = SCB_RENT;
6691da177e4SLinus Torvalds }
67072d39feaSAlan Cox spin_unlock_irqrestore(&host->avail_lock, flags);
67172d39feaSAlan Cox return scb;
6721da177e4SLinus Torvalds }
6731da177e4SLinus Torvalds
67472d39feaSAlan Cox /**
67572d39feaSAlan Cox * initio_release_scb - Release an SCB
67672d39feaSAlan Cox * @host: InitIO host that owns the SCB
67772d39feaSAlan Cox * @cmnd: SCB command block being returned
67872d39feaSAlan Cox *
67972d39feaSAlan Cox * Return an allocated SCB to the host free list
68072d39feaSAlan Cox */
68172d39feaSAlan Cox
initio_release_scb(struct initio_host * host,struct scsi_ctrl_blk * cmnd)68272d39feaSAlan Cox static void initio_release_scb(struct initio_host * host, struct scsi_ctrl_blk * cmnd)
6831da177e4SLinus Torvalds {
68472d39feaSAlan Cox unsigned long flags;
6851da177e4SLinus Torvalds
6861da177e4SLinus Torvalds #if DEBUG_QUEUE
68772d39feaSAlan Cox printk("Release SCB %p; ", cmnd);
6881da177e4SLinus Torvalds #endif
68972d39feaSAlan Cox spin_lock_irqsave(&(host->avail_lock), flags);
69072d39feaSAlan Cox cmnd->srb = NULL;
69172d39feaSAlan Cox cmnd->status = 0;
69272d39feaSAlan Cox cmnd->next = NULL;
69372d39feaSAlan Cox if (host->last_avail != NULL) {
69472d39feaSAlan Cox host->last_avail->next = cmnd;
69572d39feaSAlan Cox host->last_avail = cmnd;
6961da177e4SLinus Torvalds } else {
69772d39feaSAlan Cox host->first_avail = cmnd;
69872d39feaSAlan Cox host->last_avail = cmnd;
6991da177e4SLinus Torvalds }
70072d39feaSAlan Cox spin_unlock_irqrestore(&(host->avail_lock), flags);
7011da177e4SLinus Torvalds }
7021da177e4SLinus Torvalds
7031da177e4SLinus Torvalds /***************************************************************************/
initio_append_pend_scb(struct initio_host * host,struct scsi_ctrl_blk * scbp)70472d39feaSAlan Cox static void initio_append_pend_scb(struct initio_host * host, struct scsi_ctrl_blk * scbp)
7051da177e4SLinus Torvalds {
7061da177e4SLinus Torvalds
7071da177e4SLinus Torvalds #if DEBUG_QUEUE
70872d39feaSAlan Cox printk("Append pend SCB %p; ", scbp);
7091da177e4SLinus Torvalds #endif
71072d39feaSAlan Cox scbp->status = SCB_PEND;
71172d39feaSAlan Cox scbp->next = NULL;
71272d39feaSAlan Cox if (host->last_pending != NULL) {
71372d39feaSAlan Cox host->last_pending->next = scbp;
71472d39feaSAlan Cox host->last_pending = scbp;
7151da177e4SLinus Torvalds } else {
71672d39feaSAlan Cox host->first_pending = scbp;
71772d39feaSAlan Cox host->last_pending = scbp;
7181da177e4SLinus Torvalds }
7191da177e4SLinus Torvalds }
7201da177e4SLinus Torvalds
7211da177e4SLinus Torvalds /***************************************************************************/
initio_push_pend_scb(struct initio_host * host,struct scsi_ctrl_blk * scbp)72272d39feaSAlan Cox static void initio_push_pend_scb(struct initio_host * host, struct scsi_ctrl_blk * scbp)
7231da177e4SLinus Torvalds {
7241da177e4SLinus Torvalds
7251da177e4SLinus Torvalds #if DEBUG_QUEUE
72672d39feaSAlan Cox printk("Push pend SCB %p; ", scbp);
7271da177e4SLinus Torvalds #endif
72872d39feaSAlan Cox scbp->status = SCB_PEND;
72972d39feaSAlan Cox if ((scbp->next = host->first_pending) != NULL) {
73072d39feaSAlan Cox host->first_pending = scbp;
7311da177e4SLinus Torvalds } else {
73272d39feaSAlan Cox host->first_pending = scbp;
73372d39feaSAlan Cox host->last_pending = scbp;
7341da177e4SLinus Torvalds }
7351da177e4SLinus Torvalds }
7361da177e4SLinus Torvalds
initio_find_first_pend_scb(struct initio_host * host)73772d39feaSAlan Cox static struct scsi_ctrl_blk *initio_find_first_pend_scb(struct initio_host * host)
7381da177e4SLinus Torvalds {
73972d39feaSAlan Cox struct scsi_ctrl_blk *first;
7401da177e4SLinus Torvalds
7411da177e4SLinus Torvalds
74272d39feaSAlan Cox first = host->first_pending;
74372d39feaSAlan Cox while (first != NULL) {
74472d39feaSAlan Cox if (first->opcode != ExecSCSI)
74572d39feaSAlan Cox return first;
74672d39feaSAlan Cox if (first->tagmsg == 0) {
74772d39feaSAlan Cox if ((host->act_tags[first->target] == 0) &&
74872d39feaSAlan Cox !(host->targets[first->target].flags & TCF_BUSY))
74972d39feaSAlan Cox return first;
7501da177e4SLinus Torvalds } else {
75172d39feaSAlan Cox if ((host->act_tags[first->target] >=
75272d39feaSAlan Cox host->max_tags[first->target]) |
75372d39feaSAlan Cox (host->targets[first->target].flags & TCF_BUSY)) {
75472d39feaSAlan Cox first = first->next;
7551da177e4SLinus Torvalds continue;
7561da177e4SLinus Torvalds }
75772d39feaSAlan Cox return first;
7581da177e4SLinus Torvalds }
75972d39feaSAlan Cox first = first->next;
76072d39feaSAlan Cox }
76172d39feaSAlan Cox return first;
7621da177e4SLinus Torvalds }
7631da177e4SLinus Torvalds
initio_unlink_pend_scb(struct initio_host * host,struct scsi_ctrl_blk * scb)76472d39feaSAlan Cox static void initio_unlink_pend_scb(struct initio_host * host, struct scsi_ctrl_blk * scb)
7651da177e4SLinus Torvalds {
76672d39feaSAlan Cox struct scsi_ctrl_blk *tmp, *prev;
7671da177e4SLinus Torvalds
7681da177e4SLinus Torvalds #if DEBUG_QUEUE
76972d39feaSAlan Cox printk("unlink pend SCB %p; ", scb);
7701da177e4SLinus Torvalds #endif
7711da177e4SLinus Torvalds
77272d39feaSAlan Cox prev = tmp = host->first_pending;
77372d39feaSAlan Cox while (tmp != NULL) {
77472d39feaSAlan Cox if (scb == tmp) { /* Unlink this SCB */
77572d39feaSAlan Cox if (tmp == host->first_pending) {
77672d39feaSAlan Cox if ((host->first_pending = tmp->next) == NULL)
77772d39feaSAlan Cox host->last_pending = NULL;
7781da177e4SLinus Torvalds } else {
77972d39feaSAlan Cox prev->next = tmp->next;
78072d39feaSAlan Cox if (tmp == host->last_pending)
78172d39feaSAlan Cox host->last_pending = prev;
7821da177e4SLinus Torvalds }
78372d39feaSAlan Cox tmp->next = NULL;
7841da177e4SLinus Torvalds break;
7851da177e4SLinus Torvalds }
78672d39feaSAlan Cox prev = tmp;
78772d39feaSAlan Cox tmp = tmp->next;
7881da177e4SLinus Torvalds }
7891da177e4SLinus Torvalds }
79072d39feaSAlan Cox
initio_append_busy_scb(struct initio_host * host,struct scsi_ctrl_blk * scbp)79172d39feaSAlan Cox static void initio_append_busy_scb(struct initio_host * host, struct scsi_ctrl_blk * scbp)
7921da177e4SLinus Torvalds {
7931da177e4SLinus Torvalds
7941da177e4SLinus Torvalds #if DEBUG_QUEUE
795e2d435eaSStuart Swales printk("append busy SCB %p; ", scbp);
7961da177e4SLinus Torvalds #endif
79772d39feaSAlan Cox if (scbp->tagmsg)
79872d39feaSAlan Cox host->act_tags[scbp->target]++;
7991da177e4SLinus Torvalds else
80072d39feaSAlan Cox host->targets[scbp->target].flags |= TCF_BUSY;
80172d39feaSAlan Cox scbp->status = SCB_BUSY;
80272d39feaSAlan Cox scbp->next = NULL;
80372d39feaSAlan Cox if (host->last_busy != NULL) {
80472d39feaSAlan Cox host->last_busy->next = scbp;
80572d39feaSAlan Cox host->last_busy = scbp;
8061da177e4SLinus Torvalds } else {
80772d39feaSAlan Cox host->first_busy = scbp;
80872d39feaSAlan Cox host->last_busy = scbp;
8091da177e4SLinus Torvalds }
8101da177e4SLinus Torvalds }
8111da177e4SLinus Torvalds
8121da177e4SLinus Torvalds /***************************************************************************/
initio_pop_busy_scb(struct initio_host * host)81372d39feaSAlan Cox static struct scsi_ctrl_blk *initio_pop_busy_scb(struct initio_host * host)
8141da177e4SLinus Torvalds {
81572d39feaSAlan Cox struct scsi_ctrl_blk *tmp;
8161da177e4SLinus Torvalds
8171da177e4SLinus Torvalds
81872d39feaSAlan Cox if ((tmp = host->first_busy) != NULL) {
81972d39feaSAlan Cox if ((host->first_busy = tmp->next) == NULL)
82072d39feaSAlan Cox host->last_busy = NULL;
82172d39feaSAlan Cox tmp->next = NULL;
82272d39feaSAlan Cox if (tmp->tagmsg)
82372d39feaSAlan Cox host->act_tags[tmp->target]--;
8241da177e4SLinus Torvalds else
82572d39feaSAlan Cox host->targets[tmp->target].flags &= ~TCF_BUSY;
8261da177e4SLinus Torvalds }
8271da177e4SLinus Torvalds #if DEBUG_QUEUE
82872d39feaSAlan Cox printk("Pop busy SCB %p; ", tmp);
8291da177e4SLinus Torvalds #endif
83072d39feaSAlan Cox return tmp;
8311da177e4SLinus Torvalds }
8321da177e4SLinus Torvalds
8331da177e4SLinus Torvalds /***************************************************************************/
initio_unlink_busy_scb(struct initio_host * host,struct scsi_ctrl_blk * scb)83472d39feaSAlan Cox static void initio_unlink_busy_scb(struct initio_host * host, struct scsi_ctrl_blk * scb)
8351da177e4SLinus Torvalds {
83672d39feaSAlan Cox struct scsi_ctrl_blk *tmp, *prev;
8371da177e4SLinus Torvalds
8381da177e4SLinus Torvalds #if DEBUG_QUEUE
83972d39feaSAlan Cox printk("unlink busy SCB %p; ", scb);
8401da177e4SLinus Torvalds #endif
8411da177e4SLinus Torvalds
84272d39feaSAlan Cox prev = tmp = host->first_busy;
84372d39feaSAlan Cox while (tmp != NULL) {
84472d39feaSAlan Cox if (scb == tmp) { /* Unlink this SCB */
84572d39feaSAlan Cox if (tmp == host->first_busy) {
84672d39feaSAlan Cox if ((host->first_busy = tmp->next) == NULL)
84772d39feaSAlan Cox host->last_busy = NULL;
8481da177e4SLinus Torvalds } else {
84972d39feaSAlan Cox prev->next = tmp->next;
85072d39feaSAlan Cox if (tmp == host->last_busy)
85172d39feaSAlan Cox host->last_busy = prev;
8521da177e4SLinus Torvalds }
85372d39feaSAlan Cox tmp->next = NULL;
85472d39feaSAlan Cox if (tmp->tagmsg)
85572d39feaSAlan Cox host->act_tags[tmp->target]--;
8561da177e4SLinus Torvalds else
85772d39feaSAlan Cox host->targets[tmp->target].flags &= ~TCF_BUSY;
8581da177e4SLinus Torvalds break;
8591da177e4SLinus Torvalds }
86072d39feaSAlan Cox prev = tmp;
86172d39feaSAlan Cox tmp = tmp->next;
8621da177e4SLinus Torvalds }
8631da177e4SLinus Torvalds return;
8641da177e4SLinus Torvalds }
8651da177e4SLinus Torvalds
initio_find_busy_scb(struct initio_host * host,u16 tarlun)86672d39feaSAlan Cox struct scsi_ctrl_blk *initio_find_busy_scb(struct initio_host * host, u16 tarlun)
8671da177e4SLinus Torvalds {
86878e40ac8SLee Jones struct scsi_ctrl_blk *tmp;
86972d39feaSAlan Cox u16 scbp_tarlun;
8701da177e4SLinus Torvalds
8711da177e4SLinus Torvalds
87278e40ac8SLee Jones tmp = host->first_busy;
87372d39feaSAlan Cox while (tmp != NULL) {
87472d39feaSAlan Cox scbp_tarlun = (tmp->lun << 8) | (tmp->target);
8751da177e4SLinus Torvalds if (scbp_tarlun == tarlun) { /* Unlink this SCB */
8761da177e4SLinus Torvalds break;
8771da177e4SLinus Torvalds }
87872d39feaSAlan Cox tmp = tmp->next;
8791da177e4SLinus Torvalds }
8801da177e4SLinus Torvalds #if DEBUG_QUEUE
88172d39feaSAlan Cox printk("find busy SCB %p; ", tmp);
8821da177e4SLinus Torvalds #endif
88372d39feaSAlan Cox return tmp;
8841da177e4SLinus Torvalds }
8851da177e4SLinus Torvalds
initio_append_done_scb(struct initio_host * host,struct scsi_ctrl_blk * scbp)88672d39feaSAlan Cox static void initio_append_done_scb(struct initio_host * host, struct scsi_ctrl_blk * scbp)
8871da177e4SLinus Torvalds {
8881da177e4SLinus Torvalds #if DEBUG_QUEUE
88972d39feaSAlan Cox printk("append done SCB %p; ", scbp);
8901da177e4SLinus Torvalds #endif
8911da177e4SLinus Torvalds
89272d39feaSAlan Cox scbp->status = SCB_DONE;
89372d39feaSAlan Cox scbp->next = NULL;
89472d39feaSAlan Cox if (host->last_done != NULL) {
89572d39feaSAlan Cox host->last_done->next = scbp;
89672d39feaSAlan Cox host->last_done = scbp;
8971da177e4SLinus Torvalds } else {
89872d39feaSAlan Cox host->first_done = scbp;
89972d39feaSAlan Cox host->last_done = scbp;
9001da177e4SLinus Torvalds }
9011da177e4SLinus Torvalds }
9021da177e4SLinus Torvalds
initio_find_done_scb(struct initio_host * host)90372d39feaSAlan Cox struct scsi_ctrl_blk *initio_find_done_scb(struct initio_host * host)
9041da177e4SLinus Torvalds {
90572d39feaSAlan Cox struct scsi_ctrl_blk *tmp;
9061da177e4SLinus Torvalds
90772d39feaSAlan Cox if ((tmp = host->first_done) != NULL) {
90872d39feaSAlan Cox if ((host->first_done = tmp->next) == NULL)
90972d39feaSAlan Cox host->last_done = NULL;
91072d39feaSAlan Cox tmp->next = NULL;
9111da177e4SLinus Torvalds }
9121da177e4SLinus Torvalds #if DEBUG_QUEUE
91372d39feaSAlan Cox printk("find done SCB %p; ",tmp);
9141da177e4SLinus Torvalds #endif
91572d39feaSAlan Cox return tmp;
9161da177e4SLinus Torvalds }
9171da177e4SLinus Torvalds
initio_abort_srb(struct initio_host * host,struct scsi_cmnd * srbp)91872d39feaSAlan Cox static int initio_abort_srb(struct initio_host * host, struct scsi_cmnd *srbp)
9191da177e4SLinus Torvalds {
92072d39feaSAlan Cox unsigned long flags;
92172d39feaSAlan Cox struct scsi_ctrl_blk *tmp, *prev;
9221da177e4SLinus Torvalds
92372d39feaSAlan Cox spin_lock_irqsave(&host->semaph_lock, flags);
9241da177e4SLinus Torvalds
92572d39feaSAlan Cox if ((host->semaph == 0) && (host->active == NULL)) {
9261da177e4SLinus Torvalds /* disable Jasmin SCSI Int */
92772d39feaSAlan Cox outb(0x1F, host->addr + TUL_Mask);
92872d39feaSAlan Cox spin_unlock_irqrestore(&host->semaph_lock, flags);
92972d39feaSAlan Cox /* FIXME: synchronize_irq needed ? */
93072d39feaSAlan Cox tulip_main(host);
93172d39feaSAlan Cox spin_lock_irqsave(&host->semaph_lock, flags);
93272d39feaSAlan Cox host->semaph = 1;
93372d39feaSAlan Cox outb(0x0F, host->addr + TUL_Mask);
93472d39feaSAlan Cox spin_unlock_irqrestore(&host->semaph_lock, flags);
9351da177e4SLinus Torvalds return SCSI_ABORT_SNOOZE;
9361da177e4SLinus Torvalds }
93772d39feaSAlan Cox prev = tmp = host->first_pending; /* Check Pend queue */
93872d39feaSAlan Cox while (tmp != NULL) {
9391da177e4SLinus Torvalds /* 07/27/98 */
94072d39feaSAlan Cox if (tmp->srb == srbp) {
94172d39feaSAlan Cox if (tmp == host->active) {
94272d39feaSAlan Cox spin_unlock_irqrestore(&host->semaph_lock, flags);
9431da177e4SLinus Torvalds return SCSI_ABORT_BUSY;
94472d39feaSAlan Cox } else if (tmp == host->first_pending) {
94572d39feaSAlan Cox if ((host->first_pending = tmp->next) == NULL)
94672d39feaSAlan Cox host->last_pending = NULL;
9471da177e4SLinus Torvalds } else {
94872d39feaSAlan Cox prev->next = tmp->next;
94972d39feaSAlan Cox if (tmp == host->last_pending)
95072d39feaSAlan Cox host->last_pending = prev;
9511da177e4SLinus Torvalds }
95272d39feaSAlan Cox tmp->hastat = HOST_ABORTED;
95372d39feaSAlan Cox tmp->flags |= SCF_DONE;
95472d39feaSAlan Cox if (tmp->flags & SCF_POST)
95572d39feaSAlan Cox (*tmp->post) ((u8 *) host, (u8 *) tmp);
95672d39feaSAlan Cox spin_unlock_irqrestore(&host->semaph_lock, flags);
9571da177e4SLinus Torvalds return SCSI_ABORT_SUCCESS;
9581da177e4SLinus Torvalds }
95972d39feaSAlan Cox prev = tmp;
96072d39feaSAlan Cox tmp = tmp->next;
9611da177e4SLinus Torvalds }
9621da177e4SLinus Torvalds
96372d39feaSAlan Cox prev = tmp = host->first_busy; /* Check Busy queue */
96472d39feaSAlan Cox while (tmp != NULL) {
96572d39feaSAlan Cox if (tmp->srb == srbp) {
96672d39feaSAlan Cox if (tmp == host->active) {
96772d39feaSAlan Cox spin_unlock_irqrestore(&host->semaph_lock, flags);
9681da177e4SLinus Torvalds return SCSI_ABORT_BUSY;
96972d39feaSAlan Cox } else if (tmp->tagmsg == 0) {
97072d39feaSAlan Cox spin_unlock_irqrestore(&host->semaph_lock, flags);
9711da177e4SLinus Torvalds return SCSI_ABORT_BUSY;
9721da177e4SLinus Torvalds } else {
97372d39feaSAlan Cox host->act_tags[tmp->target]--;
97472d39feaSAlan Cox if (tmp == host->first_busy) {
97572d39feaSAlan Cox if ((host->first_busy = tmp->next) == NULL)
97672d39feaSAlan Cox host->last_busy = NULL;
9771da177e4SLinus Torvalds } else {
97872d39feaSAlan Cox prev->next = tmp->next;
97972d39feaSAlan Cox if (tmp == host->last_busy)
98072d39feaSAlan Cox host->last_busy = prev;
9811da177e4SLinus Torvalds }
98272d39feaSAlan Cox tmp->next = NULL;
9831da177e4SLinus Torvalds
9841da177e4SLinus Torvalds
98572d39feaSAlan Cox tmp->hastat = HOST_ABORTED;
98672d39feaSAlan Cox tmp->flags |= SCF_DONE;
98772d39feaSAlan Cox if (tmp->flags & SCF_POST)
98872d39feaSAlan Cox (*tmp->post) ((u8 *) host, (u8 *) tmp);
98972d39feaSAlan Cox spin_unlock_irqrestore(&host->semaph_lock, flags);
9901da177e4SLinus Torvalds return SCSI_ABORT_SUCCESS;
9911da177e4SLinus Torvalds }
9921da177e4SLinus Torvalds }
99372d39feaSAlan Cox prev = tmp;
99472d39feaSAlan Cox tmp = tmp->next;
9951da177e4SLinus Torvalds }
99672d39feaSAlan Cox spin_unlock_irqrestore(&host->semaph_lock, flags);
99772d39feaSAlan Cox return SCSI_ABORT_NOT_RUNNING;
9981da177e4SLinus Torvalds }
9991da177e4SLinus Torvalds
10001da177e4SLinus Torvalds /***************************************************************************/
initio_bad_seq(struct initio_host * host)100172d39feaSAlan Cox static int initio_bad_seq(struct initio_host * host)
10021da177e4SLinus Torvalds {
100372d39feaSAlan Cox struct scsi_ctrl_blk *scb;
10041da177e4SLinus Torvalds
100572d39feaSAlan Cox printk("initio_bad_seg c=%d\n", host->index);
10061da177e4SLinus Torvalds
100772d39feaSAlan Cox if ((scb = host->active) != NULL) {
100872d39feaSAlan Cox initio_unlink_busy_scb(host, scb);
100972d39feaSAlan Cox scb->hastat = HOST_BAD_PHAS;
101072d39feaSAlan Cox scb->tastat = 0;
101172d39feaSAlan Cox initio_append_done_scb(host, scb);
10121da177e4SLinus Torvalds }
101372d39feaSAlan Cox initio_stop_bm(host);
101472d39feaSAlan Cox initio_reset_scsi(host, 8); /* 7/29/98 */
101572d39feaSAlan Cox return initio_post_scsi_rst(host);
10161da177e4SLinus Torvalds }
10171da177e4SLinus Torvalds
1018a2ba192cSAdrian Bunk
10191da177e4SLinus Torvalds /************************************************************************/
initio_exec_scb(struct initio_host * host,struct scsi_ctrl_blk * scb)102072d39feaSAlan Cox static void initio_exec_scb(struct initio_host * host, struct scsi_ctrl_blk * scb)
10211da177e4SLinus Torvalds {
102272d39feaSAlan Cox unsigned long flags;
10231da177e4SLinus Torvalds
102472d39feaSAlan Cox scb->mode = 0;
10251da177e4SLinus Torvalds
102672d39feaSAlan Cox scb->sgidx = 0;
102772d39feaSAlan Cox scb->sgmax = scb->sglen;
10281da177e4SLinus Torvalds
102972d39feaSAlan Cox spin_lock_irqsave(&host->semaph_lock, flags);
10301da177e4SLinus Torvalds
103172d39feaSAlan Cox initio_append_pend_scb(host, scb); /* Append this SCB to Pending queue */
10321da177e4SLinus Torvalds
10331da177e4SLinus Torvalds /* VVVVV 07/21/98 */
103472d39feaSAlan Cox if (host->semaph == 1) {
103572d39feaSAlan Cox /* Disable Jasmin SCSI Int */
103672d39feaSAlan Cox outb(0x1F, host->addr + TUL_Mask);
103772d39feaSAlan Cox host->semaph = 0;
103872d39feaSAlan Cox spin_unlock_irqrestore(&host->semaph_lock, flags);
10391da177e4SLinus Torvalds
104072d39feaSAlan Cox tulip_main(host);
10411da177e4SLinus Torvalds
104272d39feaSAlan Cox spin_lock_irqsave(&host->semaph_lock, flags);
104372d39feaSAlan Cox host->semaph = 1;
104472d39feaSAlan Cox outb(0x0F, host->addr + TUL_Mask);
10451da177e4SLinus Torvalds }
104672d39feaSAlan Cox spin_unlock_irqrestore(&host->semaph_lock, flags);
10471da177e4SLinus Torvalds return;
10481da177e4SLinus Torvalds }
10491da177e4SLinus Torvalds
10501da177e4SLinus Torvalds /***************************************************************************/
initio_isr(struct initio_host * host)105172d39feaSAlan Cox static int initio_isr(struct initio_host * host)
10521da177e4SLinus Torvalds {
105372d39feaSAlan Cox if (inb(host->addr + TUL_Int) & TSS_INT_PENDING) {
105472d39feaSAlan Cox if (host->semaph == 1) {
105572d39feaSAlan Cox outb(0x1F, host->addr + TUL_Mask);
10561da177e4SLinus Torvalds /* Disable Tulip SCSI Int */
105772d39feaSAlan Cox host->semaph = 0;
10581da177e4SLinus Torvalds
105972d39feaSAlan Cox tulip_main(host);
10601da177e4SLinus Torvalds
106172d39feaSAlan Cox host->semaph = 1;
106272d39feaSAlan Cox outb(0x0F, host->addr + TUL_Mask);
106372d39feaSAlan Cox return 1;
10641da177e4SLinus Torvalds }
10651da177e4SLinus Torvalds }
106672d39feaSAlan Cox return 0;
10671da177e4SLinus Torvalds }
10681da177e4SLinus Torvalds
tulip_main(struct initio_host * host)106972d39feaSAlan Cox static int tulip_main(struct initio_host * host)
10701da177e4SLinus Torvalds {
107172d39feaSAlan Cox struct scsi_ctrl_blk *scb;
10721da177e4SLinus Torvalds
10731da177e4SLinus Torvalds for (;;) {
107472d39feaSAlan Cox tulip_scsi(host); /* Call tulip_scsi */
10751da177e4SLinus Torvalds
107672d39feaSAlan Cox /* Walk the list of completed SCBs */
107772d39feaSAlan Cox while ((scb = initio_find_done_scb(host)) != NULL) { /* find done entry */
107872d39feaSAlan Cox if (scb->tastat == INI_QUEUE_FULL) {
107972d39feaSAlan Cox host->max_tags[scb->target] =
108072d39feaSAlan Cox host->act_tags[scb->target] - 1;
108172d39feaSAlan Cox scb->tastat = 0;
108272d39feaSAlan Cox initio_append_pend_scb(host, scb);
10831da177e4SLinus Torvalds continue;
10841da177e4SLinus Torvalds }
108572d39feaSAlan Cox if (!(scb->mode & SCM_RSENS)) { /* not in auto req. sense mode */
108672d39feaSAlan Cox if (scb->tastat == 2) {
10871da177e4SLinus Torvalds
10881da177e4SLinus Torvalds /* clr sync. nego flag */
10891da177e4SLinus Torvalds
109072d39feaSAlan Cox if (scb->flags & SCF_SENSE) {
109172d39feaSAlan Cox u8 len;
109272d39feaSAlan Cox len = scb->senselen;
10931da177e4SLinus Torvalds if (len == 0)
10941da177e4SLinus Torvalds len = 1;
109572d39feaSAlan Cox scb->buflen = scb->senselen;
109672d39feaSAlan Cox scb->bufptr = scb->senseptr;
109772d39feaSAlan Cox scb->flags &= ~(SCF_SG | SCF_DIR); /* for xfer_data_in */
109872d39feaSAlan Cox /* so, we won't report wrong direction in xfer_data_in,
10991da177e4SLinus Torvalds and won't report HOST_DO_DU in state_6 */
110072d39feaSAlan Cox scb->mode = SCM_RSENS;
110172d39feaSAlan Cox scb->ident &= 0xBF; /* Disable Disconnect */
110272d39feaSAlan Cox scb->tagmsg = 0;
110372d39feaSAlan Cox scb->tastat = 0;
110472d39feaSAlan Cox scb->cdblen = 6;
110572d39feaSAlan Cox scb->cdb[0] = SCSICMD_RequestSense;
110672d39feaSAlan Cox scb->cdb[1] = 0;
110772d39feaSAlan Cox scb->cdb[2] = 0;
110872d39feaSAlan Cox scb->cdb[3] = 0;
110972d39feaSAlan Cox scb->cdb[4] = len;
111072d39feaSAlan Cox scb->cdb[5] = 0;
111172d39feaSAlan Cox initio_push_pend_scb(host, scb);
11121da177e4SLinus Torvalds break;
11131da177e4SLinus Torvalds }
11141da177e4SLinus Torvalds }
11151da177e4SLinus Torvalds } else { /* in request sense mode */
11161da177e4SLinus Torvalds
111772d39feaSAlan Cox if (scb->tastat == 2) { /* check contition status again after sending
11181da177e4SLinus Torvalds requset sense cmd 0x3 */
111972d39feaSAlan Cox scb->hastat = HOST_BAD_PHAS;
11201da177e4SLinus Torvalds }
112172d39feaSAlan Cox scb->tastat = 2;
11221da177e4SLinus Torvalds }
112372d39feaSAlan Cox scb->flags |= SCF_DONE;
112472d39feaSAlan Cox if (scb->flags & SCF_POST) {
112572d39feaSAlan Cox /* FIXME: only one post method and lose casts */
112672d39feaSAlan Cox (*scb->post) ((u8 *) host, (u8 *) scb);
11271da177e4SLinus Torvalds }
11281da177e4SLinus Torvalds } /* while */
11291da177e4SLinus Torvalds /* find_active: */
113072d39feaSAlan Cox if (inb(host->addr + TUL_SStatus0) & TSS_INT_PENDING)
11311da177e4SLinus Torvalds continue;
113272d39feaSAlan Cox if (host->active) /* return to OS and wait for xfer_done_ISR/Selected_ISR */
11331da177e4SLinus Torvalds return 1; /* return to OS, enable interrupt */
11341da177e4SLinus Torvalds /* Check pending SCB */
113572d39feaSAlan Cox if (initio_find_first_pend_scb(host) == NULL)
11361da177e4SLinus Torvalds return 1; /* return to OS, enable interrupt */
11371da177e4SLinus Torvalds } /* End of for loop */
11381da177e4SLinus Torvalds /* statement won't reach here */
11391da177e4SLinus Torvalds }
11401da177e4SLinus Torvalds
tulip_scsi(struct initio_host * host)114172d39feaSAlan Cox static void tulip_scsi(struct initio_host * host)
11421da177e4SLinus Torvalds {
114372d39feaSAlan Cox struct scsi_ctrl_blk *scb;
114472d39feaSAlan Cox struct target_control *active_tc;
11451da177e4SLinus Torvalds
11461da177e4SLinus Torvalds /* make sure to service interrupt asap */
114772d39feaSAlan Cox if ((host->jsstatus0 = inb(host->addr + TUL_SStatus0)) & TSS_INT_PENDING) {
114872d39feaSAlan Cox host->phase = host->jsstatus0 & TSS_PH_MASK;
114972d39feaSAlan Cox host->jsstatus1 = inb(host->addr + TUL_SStatus1);
115072d39feaSAlan Cox host->jsint = inb(host->addr + TUL_SInt);
115172d39feaSAlan Cox if (host->jsint & TSS_SCSIRST_INT) { /* SCSI bus reset detected */
115272d39feaSAlan Cox int_initio_scsi_rst(host);
11531da177e4SLinus Torvalds return;
11541da177e4SLinus Torvalds }
115572d39feaSAlan Cox if (host->jsint & TSS_RESEL_INT) { /* if selected/reselected interrupt */
115672d39feaSAlan Cox if (int_initio_resel(host) == 0)
115772d39feaSAlan Cox initio_next_state(host);
11581da177e4SLinus Torvalds return;
11591da177e4SLinus Torvalds }
116072d39feaSAlan Cox if (host->jsint & TSS_SEL_TIMEOUT) {
116172d39feaSAlan Cox int_initio_busfree(host);
11621da177e4SLinus Torvalds return;
11631da177e4SLinus Torvalds }
116472d39feaSAlan Cox if (host->jsint & TSS_DISC_INT) { /* BUS disconnection */
116572d39feaSAlan Cox int_initio_busfree(host); /* unexpected bus free or sel timeout */
11661da177e4SLinus Torvalds return;
11671da177e4SLinus Torvalds }
116872d39feaSAlan Cox if (host->jsint & (TSS_FUNC_COMP | TSS_BUS_SERV)) { /* func complete or Bus service */
11693fa5975bSColin Ian King if (host->active)
117072d39feaSAlan Cox initio_next_state(host);
11711da177e4SLinus Torvalds return;
11721da177e4SLinus Torvalds }
11731da177e4SLinus Torvalds }
117472d39feaSAlan Cox if (host->active != NULL)
11751da177e4SLinus Torvalds return;
11761da177e4SLinus Torvalds
117772d39feaSAlan Cox if ((scb = initio_find_first_pend_scb(host)) == NULL)
11781da177e4SLinus Torvalds return;
11791da177e4SLinus Torvalds
11801da177e4SLinus Torvalds /* program HBA's SCSI ID & target SCSI ID */
118172d39feaSAlan Cox outb((host->scsi_id << 4) | (scb->target & 0x0F),
118272d39feaSAlan Cox host->addr + TUL_SScsiId);
118372d39feaSAlan Cox if (scb->opcode == ExecSCSI) {
118472d39feaSAlan Cox active_tc = &host->targets[scb->target];
11851da177e4SLinus Torvalds
118672d39feaSAlan Cox if (scb->tagmsg)
118772d39feaSAlan Cox active_tc->drv_flags |= TCF_DRV_EN_TAG;
11881da177e4SLinus Torvalds else
118972d39feaSAlan Cox active_tc->drv_flags &= ~TCF_DRV_EN_TAG;
11901da177e4SLinus Torvalds
119172d39feaSAlan Cox outb(active_tc->js_period, host->addr + TUL_SPeriod);
119272d39feaSAlan Cox if ((active_tc->flags & (TCF_WDTR_DONE | TCF_NO_WDTR)) == 0) { /* do wdtr negotiation */
119372d39feaSAlan Cox initio_select_atn_stop(host, scb);
11941da177e4SLinus Torvalds } else {
119572d39feaSAlan Cox if ((active_tc->flags & (TCF_SYNC_DONE | TCF_NO_SYNC_NEGO)) == 0) { /* do sync negotiation */
119672d39feaSAlan Cox initio_select_atn_stop(host, scb);
11971da177e4SLinus Torvalds } else {
119872d39feaSAlan Cox if (scb->tagmsg)
119972d39feaSAlan Cox initio_select_atn3(host, scb);
12001da177e4SLinus Torvalds else
120172d39feaSAlan Cox initio_select_atn(host, scb);
12021da177e4SLinus Torvalds }
12031da177e4SLinus Torvalds }
120472d39feaSAlan Cox if (scb->flags & SCF_POLL) {
120572d39feaSAlan Cox while (wait_tulip(host) != -1) {
120672d39feaSAlan Cox if (initio_next_state(host) == -1)
12071da177e4SLinus Torvalds break;
12081da177e4SLinus Torvalds }
12091da177e4SLinus Torvalds }
121072d39feaSAlan Cox } else if (scb->opcode == BusDevRst) {
121172d39feaSAlan Cox initio_select_atn_stop(host, scb);
121272d39feaSAlan Cox scb->next_state = 8;
121372d39feaSAlan Cox if (scb->flags & SCF_POLL) {
121472d39feaSAlan Cox while (wait_tulip(host) != -1) {
121572d39feaSAlan Cox if (initio_next_state(host) == -1)
12161da177e4SLinus Torvalds break;
12171da177e4SLinus Torvalds }
12181da177e4SLinus Torvalds }
121972d39feaSAlan Cox } else if (scb->opcode == AbortCmd) {
122072d39feaSAlan Cox if (initio_abort_srb(host, scb->srb) != 0) {
122172d39feaSAlan Cox initio_unlink_pend_scb(host, scb);
122272d39feaSAlan Cox initio_release_scb(host, scb);
12231da177e4SLinus Torvalds } else {
122472d39feaSAlan Cox scb->opcode = BusDevRst;
122572d39feaSAlan Cox initio_select_atn_stop(host, scb);
122672d39feaSAlan Cox scb->next_state = 8;
12271da177e4SLinus Torvalds }
12281da177e4SLinus Torvalds } else {
122972d39feaSAlan Cox initio_unlink_pend_scb(host, scb);
123072d39feaSAlan Cox scb->hastat = 0x16; /* bad command */
123172d39feaSAlan Cox initio_append_done_scb(host, scb);
12321da177e4SLinus Torvalds }
12331da177e4SLinus Torvalds return;
12341da177e4SLinus Torvalds }
12351da177e4SLinus Torvalds
123672d39feaSAlan Cox /**
123772d39feaSAlan Cox * initio_next_state - Next SCSI state
123872d39feaSAlan Cox * @host: InitIO host we are processing
123972d39feaSAlan Cox *
124072d39feaSAlan Cox * Progress the active command block along the state machine
124172d39feaSAlan Cox * until we hit a state which we must wait for activity to occur.
124272d39feaSAlan Cox *
124372d39feaSAlan Cox * Returns zero or a negative code.
124472d39feaSAlan Cox */
12451da177e4SLinus Torvalds
initio_next_state(struct initio_host * host)124672d39feaSAlan Cox static int initio_next_state(struct initio_host * host)
12471da177e4SLinus Torvalds {
12481da177e4SLinus Torvalds int next;
12491da177e4SLinus Torvalds
125072d39feaSAlan Cox next = host->active->next_state;
12511da177e4SLinus Torvalds for (;;) {
12521da177e4SLinus Torvalds switch (next) {
12531da177e4SLinus Torvalds case 1:
125472d39feaSAlan Cox next = initio_state_1(host);
12551da177e4SLinus Torvalds break;
12561da177e4SLinus Torvalds case 2:
125772d39feaSAlan Cox next = initio_state_2(host);
12581da177e4SLinus Torvalds break;
12591da177e4SLinus Torvalds case 3:
126072d39feaSAlan Cox next = initio_state_3(host);
12611da177e4SLinus Torvalds break;
12621da177e4SLinus Torvalds case 4:
126372d39feaSAlan Cox next = initio_state_4(host);
12641da177e4SLinus Torvalds break;
12651da177e4SLinus Torvalds case 5:
126672d39feaSAlan Cox next = initio_state_5(host);
12671da177e4SLinus Torvalds break;
12681da177e4SLinus Torvalds case 6:
126972d39feaSAlan Cox next = initio_state_6(host);
12701da177e4SLinus Torvalds break;
12711da177e4SLinus Torvalds case 7:
127272d39feaSAlan Cox next = initio_state_7(host);
12731da177e4SLinus Torvalds break;
12741da177e4SLinus Torvalds case 8:
127572d39feaSAlan Cox return initio_bus_device_reset(host);
12761da177e4SLinus Torvalds default:
127772d39feaSAlan Cox return initio_bad_seq(host);
12781da177e4SLinus Torvalds }
12791da177e4SLinus Torvalds if (next <= 0)
12801da177e4SLinus Torvalds return next;
12811da177e4SLinus Torvalds }
12821da177e4SLinus Torvalds }
12831da177e4SLinus Torvalds
12841da177e4SLinus Torvalds
128572d39feaSAlan Cox /**
128672d39feaSAlan Cox * initio_state_1 - SCSI state machine
128772d39feaSAlan Cox * @host: InitIO host we are controlling
128872d39feaSAlan Cox *
128972d39feaSAlan Cox * Perform SCSI state processing for Select/Attention/Stop
129072d39feaSAlan Cox */
129172d39feaSAlan Cox
initio_state_1(struct initio_host * host)129272d39feaSAlan Cox static int initio_state_1(struct initio_host * host)
12931da177e4SLinus Torvalds {
129472d39feaSAlan Cox struct scsi_ctrl_blk *scb = host->active;
129572d39feaSAlan Cox struct target_control *active_tc = host->active_tc;
12961da177e4SLinus Torvalds #if DEBUG_STATE
12971da177e4SLinus Torvalds printk("-s1-");
12981da177e4SLinus Torvalds #endif
12991da177e4SLinus Torvalds
130072d39feaSAlan Cox /* Move the SCB from pending to busy */
130172d39feaSAlan Cox initio_unlink_pend_scb(host, scb);
130272d39feaSAlan Cox initio_append_busy_scb(host, scb);
13031da177e4SLinus Torvalds
130472d39feaSAlan Cox outb(active_tc->sconfig0, host->addr + TUL_SConfig );
13051da177e4SLinus Torvalds /* ATN on */
130672d39feaSAlan Cox if (host->phase == MSG_OUT) {
130772d39feaSAlan Cox outb(TSC_EN_BUS_IN | TSC_HW_RESELECT, host->addr + TUL_SCtrl1);
130872d39feaSAlan Cox outb(scb->ident, host->addr + TUL_SFifo);
13091da177e4SLinus Torvalds
131072d39feaSAlan Cox if (scb->tagmsg) {
131172d39feaSAlan Cox outb(scb->tagmsg, host->addr + TUL_SFifo);
131272d39feaSAlan Cox outb(scb->tagid, host->addr + TUL_SFifo);
13131da177e4SLinus Torvalds }
131472d39feaSAlan Cox if ((active_tc->flags & (TCF_WDTR_DONE | TCF_NO_WDTR)) == 0) {
131572d39feaSAlan Cox active_tc->flags |= TCF_WDTR_DONE;
13169df17f46SHannes Reinecke outb(EXTENDED_MESSAGE, host->addr + TUL_SFifo);
131772d39feaSAlan Cox outb(2, host->addr + TUL_SFifo); /* Extended msg length */
13189df17f46SHannes Reinecke outb(EXTENDED_SDTR, host->addr + TUL_SFifo); /* Sync request */
131972d39feaSAlan Cox outb(1, host->addr + TUL_SFifo); /* Start from 16 bits */
132072d39feaSAlan Cox } else if ((active_tc->flags & (TCF_SYNC_DONE | TCF_NO_SYNC_NEGO)) == 0) {
132172d39feaSAlan Cox active_tc->flags |= TCF_SYNC_DONE;
13229df17f46SHannes Reinecke outb(EXTENDED_MESSAGE, host->addr + TUL_SFifo);
132372d39feaSAlan Cox outb(3, host->addr + TUL_SFifo); /* extended msg length */
13249df17f46SHannes Reinecke outb(EXTENDED_SDTR, host->addr + TUL_SFifo); /* sync request */
132572d39feaSAlan Cox outb(initio_rate_tbl[active_tc->flags & TCF_SCSI_RATE], host->addr + TUL_SFifo);
132672d39feaSAlan Cox outb(MAX_OFFSET, host->addr + TUL_SFifo); /* REQ/ACK offset */
13271da177e4SLinus Torvalds }
132872d39feaSAlan Cox outb(TSC_XF_FIFO_OUT, host->addr + TUL_SCmd);
132972d39feaSAlan Cox if (wait_tulip(host) == -1)
133072d39feaSAlan Cox return -1;
13311da177e4SLinus Torvalds }
133272d39feaSAlan Cox outb(TSC_FLUSH_FIFO, host->addr + TUL_SCtrl0);
133372d39feaSAlan Cox outb((inb(host->addr + TUL_SSignal) & (TSC_SET_ACK | 7)), host->addr + TUL_SSignal);
133472d39feaSAlan Cox /* Into before CDB xfer */
133572d39feaSAlan Cox return 3;
13361da177e4SLinus Torvalds }
13371da177e4SLinus Torvalds
13381da177e4SLinus Torvalds
133972d39feaSAlan Cox /**
134072d39feaSAlan Cox * initio_state_2 - SCSI state machine
134172d39feaSAlan Cox * @host: InitIO host we are controlling
134272d39feaSAlan Cox *
134372d39feaSAlan Cox * state after selection with attention
134472d39feaSAlan Cox * state after selection with attention3
134572d39feaSAlan Cox */
134672d39feaSAlan Cox
initio_state_2(struct initio_host * host)134772d39feaSAlan Cox static int initio_state_2(struct initio_host * host)
13481da177e4SLinus Torvalds {
134972d39feaSAlan Cox struct scsi_ctrl_blk *scb = host->active;
135072d39feaSAlan Cox struct target_control *active_tc = host->active_tc;
13511da177e4SLinus Torvalds #if DEBUG_STATE
13521da177e4SLinus Torvalds printk("-s2-");
13531da177e4SLinus Torvalds #endif
13541da177e4SLinus Torvalds
135572d39feaSAlan Cox initio_unlink_pend_scb(host, scb);
135672d39feaSAlan Cox initio_append_busy_scb(host, scb);
13571da177e4SLinus Torvalds
135872d39feaSAlan Cox outb(active_tc->sconfig0, host->addr + TUL_SConfig);
13591da177e4SLinus Torvalds
136072d39feaSAlan Cox if (host->jsstatus1 & TSS_CMD_PH_CMP)
136172d39feaSAlan Cox return 4;
136272d39feaSAlan Cox
136372d39feaSAlan Cox outb(TSC_FLUSH_FIFO, host->addr + TUL_SCtrl0);
136472d39feaSAlan Cox outb((inb(host->addr + TUL_SSignal) & (TSC_SET_ACK | 7)), host->addr + TUL_SSignal);
136572d39feaSAlan Cox /* Into before CDB xfer */
136672d39feaSAlan Cox return 3;
13671da177e4SLinus Torvalds }
13681da177e4SLinus Torvalds
136972d39feaSAlan Cox /**
137072d39feaSAlan Cox * initio_state_3 - SCSI state machine
137172d39feaSAlan Cox * @host: InitIO host we are controlling
137272d39feaSAlan Cox *
137372d39feaSAlan Cox * state before CDB xfer is done
137472d39feaSAlan Cox */
137572d39feaSAlan Cox
initio_state_3(struct initio_host * host)137672d39feaSAlan Cox static int initio_state_3(struct initio_host * host)
13771da177e4SLinus Torvalds {
137872d39feaSAlan Cox struct scsi_ctrl_blk *scb = host->active;
137972d39feaSAlan Cox struct target_control *active_tc = host->active_tc;
13801da177e4SLinus Torvalds int i;
13811da177e4SLinus Torvalds
13821da177e4SLinus Torvalds #if DEBUG_STATE
13831da177e4SLinus Torvalds printk("-s3-");
13841da177e4SLinus Torvalds #endif
13851da177e4SLinus Torvalds for (;;) {
138672d39feaSAlan Cox switch (host->phase) {
13871da177e4SLinus Torvalds case CMD_OUT: /* Command out phase */
138872d39feaSAlan Cox for (i = 0; i < (int) scb->cdblen; i++)
138972d39feaSAlan Cox outb(scb->cdb[i], host->addr + TUL_SFifo);
139072d39feaSAlan Cox outb(TSC_XF_FIFO_OUT, host->addr + TUL_SCmd);
139172d39feaSAlan Cox if (wait_tulip(host) == -1)
139272d39feaSAlan Cox return -1;
139372d39feaSAlan Cox if (host->phase == CMD_OUT)
139472d39feaSAlan Cox return initio_bad_seq(host);
139572d39feaSAlan Cox return 4;
13961da177e4SLinus Torvalds
13971da177e4SLinus Torvalds case MSG_IN: /* Message in phase */
139872d39feaSAlan Cox scb->next_state = 3;
139972d39feaSAlan Cox if (initio_msgin(host) == -1)
140072d39feaSAlan Cox return -1;
14011da177e4SLinus Torvalds break;
14021da177e4SLinus Torvalds
14031da177e4SLinus Torvalds case STATUS_IN: /* Status phase */
140472d39feaSAlan Cox if (initio_status_msg(host) == -1)
140572d39feaSAlan Cox return -1;
14061da177e4SLinus Torvalds break;
14071da177e4SLinus Torvalds
14081da177e4SLinus Torvalds case MSG_OUT: /* Message out phase */
140972d39feaSAlan Cox if (active_tc->flags & (TCF_SYNC_DONE | TCF_NO_SYNC_NEGO)) {
14109df17f46SHannes Reinecke outb(NOP, host->addr + TUL_SFifo); /* msg nop */
141172d39feaSAlan Cox outb(TSC_XF_FIFO_OUT, host->addr + TUL_SCmd);
141272d39feaSAlan Cox if (wait_tulip(host) == -1)
141372d39feaSAlan Cox return -1;
14141da177e4SLinus Torvalds } else {
141572d39feaSAlan Cox active_tc->flags |= TCF_SYNC_DONE;
14161da177e4SLinus Torvalds
14179df17f46SHannes Reinecke outb(EXTENDED_MESSAGE, host->addr + TUL_SFifo);
141872d39feaSAlan Cox outb(3, host->addr + TUL_SFifo); /* ext. msg len */
14199df17f46SHannes Reinecke outb(EXTENDED_SDTR, host->addr + TUL_SFifo); /* sync request */
142072d39feaSAlan Cox outb(initio_rate_tbl[active_tc->flags & TCF_SCSI_RATE], host->addr + TUL_SFifo);
142172d39feaSAlan Cox outb(MAX_OFFSET, host->addr + TUL_SFifo); /* REQ/ACK offset */
142272d39feaSAlan Cox outb(TSC_XF_FIFO_OUT, host->addr + TUL_SCmd);
142372d39feaSAlan Cox if (wait_tulip(host) == -1)
142472d39feaSAlan Cox return -1;
142572d39feaSAlan Cox outb(TSC_FLUSH_FIFO, host->addr + TUL_SCtrl0);
142672d39feaSAlan Cox outb(inb(host->addr + TUL_SSignal) & (TSC_SET_ACK | 7), host->addr + TUL_SSignal);
14271da177e4SLinus Torvalds
14281da177e4SLinus Torvalds }
14291da177e4SLinus Torvalds break;
14301da177e4SLinus Torvalds default:
143172d39feaSAlan Cox return initio_bad_seq(host);
14321da177e4SLinus Torvalds }
14331da177e4SLinus Torvalds }
14341da177e4SLinus Torvalds }
14351da177e4SLinus Torvalds
143672d39feaSAlan Cox /**
143772d39feaSAlan Cox * initio_state_4 - SCSI state machine
143872d39feaSAlan Cox * @host: InitIO host we are controlling
143972d39feaSAlan Cox *
144072d39feaSAlan Cox * SCSI state machine. State 4
144172d39feaSAlan Cox */
14421da177e4SLinus Torvalds
initio_state_4(struct initio_host * host)144372d39feaSAlan Cox static int initio_state_4(struct initio_host * host)
14441da177e4SLinus Torvalds {
144572d39feaSAlan Cox struct scsi_ctrl_blk *scb = host->active;
14461da177e4SLinus Torvalds
14471da177e4SLinus Torvalds #if DEBUG_STATE
14481da177e4SLinus Torvalds printk("-s4-");
14491da177e4SLinus Torvalds #endif
145072d39feaSAlan Cox if ((scb->flags & SCF_DIR) == SCF_NO_XF) {
145172d39feaSAlan Cox return 6; /* Go to state 6 (After data) */
14521da177e4SLinus Torvalds }
14531da177e4SLinus Torvalds for (;;) {
145472d39feaSAlan Cox if (scb->buflen == 0)
145572d39feaSAlan Cox return 6;
14561da177e4SLinus Torvalds
145772d39feaSAlan Cox switch (host->phase) {
14581da177e4SLinus Torvalds
14591da177e4SLinus Torvalds case STATUS_IN: /* Status phase */
146072d39feaSAlan Cox if ((scb->flags & SCF_DIR) != 0) /* if direction bit set then report data underrun */
146172d39feaSAlan Cox scb->hastat = HOST_DO_DU;
146272d39feaSAlan Cox if ((initio_status_msg(host)) == -1)
146372d39feaSAlan Cox return -1;
14641da177e4SLinus Torvalds break;
14651da177e4SLinus Torvalds
14661da177e4SLinus Torvalds case MSG_IN: /* Message in phase */
146772d39feaSAlan Cox scb->next_state = 0x4;
146872d39feaSAlan Cox if (initio_msgin(host) == -1)
146972d39feaSAlan Cox return -1;
14701da177e4SLinus Torvalds break;
14711da177e4SLinus Torvalds
14721da177e4SLinus Torvalds case MSG_OUT: /* Message out phase */
147372d39feaSAlan Cox if (host->jsstatus0 & TSS_PAR_ERROR) {
147472d39feaSAlan Cox scb->buflen = 0;
147572d39feaSAlan Cox scb->hastat = HOST_DO_DU;
147672d39feaSAlan Cox if (initio_msgout_ide(host) == -1)
147772d39feaSAlan Cox return -1;
147872d39feaSAlan Cox return 6;
14791da177e4SLinus Torvalds } else {
14809df17f46SHannes Reinecke outb(NOP, host->addr + TUL_SFifo); /* msg nop */
148172d39feaSAlan Cox outb(TSC_XF_FIFO_OUT, host->addr + TUL_SCmd);
148272d39feaSAlan Cox if (wait_tulip(host) == -1)
148372d39feaSAlan Cox return -1;
14841da177e4SLinus Torvalds }
14851da177e4SLinus Torvalds break;
14861da177e4SLinus Torvalds
14871da177e4SLinus Torvalds case DATA_IN: /* Data in phase */
148872d39feaSAlan Cox return initio_xfer_data_in(host);
14891da177e4SLinus Torvalds
14901da177e4SLinus Torvalds case DATA_OUT: /* Data out phase */
149172d39feaSAlan Cox return initio_xfer_data_out(host);
14921da177e4SLinus Torvalds
14931da177e4SLinus Torvalds default:
149472d39feaSAlan Cox return initio_bad_seq(host);
14951da177e4SLinus Torvalds }
14961da177e4SLinus Torvalds }
14971da177e4SLinus Torvalds }
14981da177e4SLinus Torvalds
14991da177e4SLinus Torvalds
150072d39feaSAlan Cox /**
150172d39feaSAlan Cox * initio_state_5 - SCSI state machine
150272d39feaSAlan Cox * @host: InitIO host we are controlling
150372d39feaSAlan Cox *
150472d39feaSAlan Cox * State after dma xfer done or phase change before xfer done
150572d39feaSAlan Cox */
150672d39feaSAlan Cox
initio_state_5(struct initio_host * host)150772d39feaSAlan Cox static int initio_state_5(struct initio_host * host)
15081da177e4SLinus Torvalds {
150972d39feaSAlan Cox struct scsi_ctrl_blk *scb = host->active;
15101da177e4SLinus Torvalds long cnt, xcnt; /* cannot use unsigned !! code: if (xcnt < 0) */
15111da177e4SLinus Torvalds
15121da177e4SLinus Torvalds #if DEBUG_STATE
15131da177e4SLinus Torvalds printk("-s5-");
15141da177e4SLinus Torvalds #endif
15151da177e4SLinus Torvalds /*------ get remaining count -------*/
151672d39feaSAlan Cox cnt = inl(host->addr + TUL_SCnt0) & 0x0FFFFFF;
15171da177e4SLinus Torvalds
151872d39feaSAlan Cox if (inb(host->addr + TUL_XCmd) & 0x20) {
15191da177e4SLinus Torvalds /* ----------------------- DATA_IN ----------------------------- */
15201da177e4SLinus Torvalds /* check scsi parity error */
152172d39feaSAlan Cox if (host->jsstatus0 & TSS_PAR_ERROR)
152272d39feaSAlan Cox scb->hastat = HOST_DO_DU;
152372d39feaSAlan Cox if (inb(host->addr + TUL_XStatus) & XPEND) { /* DMA xfer pending, Send STOP */
15241da177e4SLinus Torvalds /* tell Hardware scsi xfer has been terminated */
152572d39feaSAlan Cox outb(inb(host->addr + TUL_XCtrl) | 0x80, host->addr + TUL_XCtrl);
15261da177e4SLinus Torvalds /* wait until DMA xfer not pending */
152772d39feaSAlan Cox while (inb(host->addr + TUL_XStatus) & XPEND)
152872d39feaSAlan Cox cpu_relax();
15291da177e4SLinus Torvalds }
15301da177e4SLinus Torvalds } else {
15311da177e4SLinus Torvalds /*-------- DATA OUT -----------*/
153272d39feaSAlan Cox if ((inb(host->addr + TUL_SStatus1) & TSS_XFER_CMP) == 0) {
153372d39feaSAlan Cox if (host->active_tc->js_period & TSC_WIDE_SCSI)
153472d39feaSAlan Cox cnt += (inb(host->addr + TUL_SFifoCnt) & 0x1F) << 1;
15351da177e4SLinus Torvalds else
153672d39feaSAlan Cox cnt += (inb(host->addr + TUL_SFifoCnt) & 0x1F);
15371da177e4SLinus Torvalds }
153872d39feaSAlan Cox if (inb(host->addr + TUL_XStatus) & XPEND) { /* if DMA xfer is pending, abort DMA xfer */
153972d39feaSAlan Cox outb(TAX_X_ABT, host->addr + TUL_XCmd);
15401da177e4SLinus Torvalds /* wait Abort DMA xfer done */
154172d39feaSAlan Cox while ((inb(host->addr + TUL_Int) & XABT) == 0)
154272d39feaSAlan Cox cpu_relax();
15431da177e4SLinus Torvalds }
154472d39feaSAlan Cox if ((cnt == 1) && (host->phase == DATA_OUT)) {
154572d39feaSAlan Cox outb(TSC_XF_FIFO_OUT, host->addr + TUL_SCmd);
154672d39feaSAlan Cox if (wait_tulip(host) == -1)
154772d39feaSAlan Cox return -1;
15481da177e4SLinus Torvalds cnt = 0;
15491da177e4SLinus Torvalds } else {
155072d39feaSAlan Cox if ((inb(host->addr + TUL_SStatus1) & TSS_XFER_CMP) == 0)
155172d39feaSAlan Cox outb(TSC_FLUSH_FIFO, host->addr + TUL_SCtrl0);
15521da177e4SLinus Torvalds }
15531da177e4SLinus Torvalds }
15541da177e4SLinus Torvalds if (cnt == 0) {
155572d39feaSAlan Cox scb->buflen = 0;
155672d39feaSAlan Cox return 6; /* After Data */
15571da177e4SLinus Torvalds }
15581da177e4SLinus Torvalds /* Update active data pointer */
155972d39feaSAlan Cox xcnt = (long) scb->buflen - cnt; /* xcnt== bytes already xferred */
156072d39feaSAlan Cox scb->buflen = (u32) cnt; /* cnt == bytes left to be xferred */
156172d39feaSAlan Cox if (scb->flags & SCF_SG) {
156272d39feaSAlan Cox struct sg_entry *sgp;
156372d39feaSAlan Cox unsigned long i;
15641da177e4SLinus Torvalds
156572d39feaSAlan Cox sgp = &scb->sglist[scb->sgidx];
156672d39feaSAlan Cox for (i = scb->sgidx; i < scb->sgmax; sgp++, i++) {
156772d39feaSAlan Cox xcnt -= (long) sgp->len;
15681da177e4SLinus Torvalds if (xcnt < 0) { /* this sgp xfer half done */
156972d39feaSAlan Cox xcnt += (long) sgp->len; /* xcnt == bytes xferred in this sgp */
157072d39feaSAlan Cox sgp->data += (u32) xcnt; /* new ptr to be xfer */
157172d39feaSAlan Cox sgp->len -= (u32) xcnt; /* new len to be xfer */
157272d39feaSAlan Cox scb->bufptr += ((u32) (i - scb->sgidx) << 3);
15731da177e4SLinus Torvalds /* new SG table ptr */
157472d39feaSAlan Cox scb->sglen = (u8) (scb->sgmax - i);
15751da177e4SLinus Torvalds /* new SG table len */
157672d39feaSAlan Cox scb->sgidx = (u16) i;
15771da177e4SLinus Torvalds /* for next disc and come in this loop */
157872d39feaSAlan Cox return 4; /* Go to state 4 */
15791da177e4SLinus Torvalds }
15801da177e4SLinus Torvalds /* else (xcnt >= 0 , i.e. this sgp already xferred */
15811da177e4SLinus Torvalds } /* for */
158272d39feaSAlan Cox return 6; /* Go to state 6 */
15831da177e4SLinus Torvalds } else {
158472d39feaSAlan Cox scb->bufptr += (u32) xcnt;
15851da177e4SLinus Torvalds }
158672d39feaSAlan Cox return 4; /* Go to state 4 */
15871da177e4SLinus Torvalds }
15881da177e4SLinus Torvalds
158972d39feaSAlan Cox /**
159072d39feaSAlan Cox * initio_state_6 - SCSI state machine
159172d39feaSAlan Cox * @host: InitIO host we are controlling
159272d39feaSAlan Cox *
159372d39feaSAlan Cox * State after Data phase
159472d39feaSAlan Cox */
159572d39feaSAlan Cox
initio_state_6(struct initio_host * host)159672d39feaSAlan Cox static int initio_state_6(struct initio_host * host)
15971da177e4SLinus Torvalds {
159872d39feaSAlan Cox struct scsi_ctrl_blk *scb = host->active;
15991da177e4SLinus Torvalds
16001da177e4SLinus Torvalds #if DEBUG_STATE
16011da177e4SLinus Torvalds printk("-s6-");
16021da177e4SLinus Torvalds #endif
16031da177e4SLinus Torvalds for (;;) {
160472d39feaSAlan Cox switch (host->phase) {
16051da177e4SLinus Torvalds case STATUS_IN: /* Status phase */
160672d39feaSAlan Cox if ((initio_status_msg(host)) == -1)
160772d39feaSAlan Cox return -1;
16081da177e4SLinus Torvalds break;
16091da177e4SLinus Torvalds
16101da177e4SLinus Torvalds case MSG_IN: /* Message in phase */
161172d39feaSAlan Cox scb->next_state = 6;
161272d39feaSAlan Cox if ((initio_msgin(host)) == -1)
161372d39feaSAlan Cox return -1;
16141da177e4SLinus Torvalds break;
16151da177e4SLinus Torvalds
16161da177e4SLinus Torvalds case MSG_OUT: /* Message out phase */
16179df17f46SHannes Reinecke outb(NOP, host->addr + TUL_SFifo); /* msg nop */
161872d39feaSAlan Cox outb(TSC_XF_FIFO_OUT, host->addr + TUL_SCmd);
161972d39feaSAlan Cox if (wait_tulip(host) == -1)
162072d39feaSAlan Cox return -1;
16211da177e4SLinus Torvalds break;
16221da177e4SLinus Torvalds
16231da177e4SLinus Torvalds case DATA_IN: /* Data in phase */
162472d39feaSAlan Cox return initio_xpad_in(host);
16251da177e4SLinus Torvalds
16261da177e4SLinus Torvalds case DATA_OUT: /* Data out phase */
162772d39feaSAlan Cox return initio_xpad_out(host);
16281da177e4SLinus Torvalds
16291da177e4SLinus Torvalds default:
163072d39feaSAlan Cox return initio_bad_seq(host);
16311da177e4SLinus Torvalds }
16321da177e4SLinus Torvalds }
16331da177e4SLinus Torvalds }
16341da177e4SLinus Torvalds
163572d39feaSAlan Cox /**
163672d39feaSAlan Cox * initio_state_7 - SCSI state machine
163772d39feaSAlan Cox * @host: InitIO host we are controlling
163872d39feaSAlan Cox *
163972d39feaSAlan Cox */
164072d39feaSAlan Cox
initio_state_7(struct initio_host * host)16410c3dbdebSChen Zhou static int initio_state_7(struct initio_host * host)
16421da177e4SLinus Torvalds {
16431da177e4SLinus Torvalds int cnt, i;
16441da177e4SLinus Torvalds
16451da177e4SLinus Torvalds #if DEBUG_STATE
16461da177e4SLinus Torvalds printk("-s7-");
16471da177e4SLinus Torvalds #endif
16481da177e4SLinus Torvalds /* flush SCSI FIFO */
164972d39feaSAlan Cox cnt = inb(host->addr + TUL_SFifoCnt) & 0x1F;
16501da177e4SLinus Torvalds if (cnt) {
16511da177e4SLinus Torvalds for (i = 0; i < cnt; i++)
165272d39feaSAlan Cox inb(host->addr + TUL_SFifo);
16531da177e4SLinus Torvalds }
165472d39feaSAlan Cox switch (host->phase) {
16551da177e4SLinus Torvalds case DATA_IN: /* Data in phase */
16561da177e4SLinus Torvalds case DATA_OUT: /* Data out phase */
165772d39feaSAlan Cox return initio_bad_seq(host);
16581da177e4SLinus Torvalds default:
165972d39feaSAlan Cox return 6; /* Go to state 6 */
16601da177e4SLinus Torvalds }
16611da177e4SLinus Torvalds }
16621da177e4SLinus Torvalds
166372d39feaSAlan Cox /**
166472d39feaSAlan Cox * initio_xfer_data_in - Commence data input
166572d39feaSAlan Cox * @host: InitIO host in use
166672d39feaSAlan Cox *
166772d39feaSAlan Cox * Commence a block of data transfer. The transfer itself will
166872d39feaSAlan Cox * be managed by the controller and we will get a completion (or
166972d39feaSAlan Cox * failure) interrupt.
167072d39feaSAlan Cox */
initio_xfer_data_in(struct initio_host * host)167172d39feaSAlan Cox static int initio_xfer_data_in(struct initio_host * host)
16721da177e4SLinus Torvalds {
167372d39feaSAlan Cox struct scsi_ctrl_blk *scb = host->active;
16741da177e4SLinus Torvalds
167572d39feaSAlan Cox if ((scb->flags & SCF_DIR) == SCF_DOUT)
167672d39feaSAlan Cox return 6; /* wrong direction */
16771da177e4SLinus Torvalds
167872d39feaSAlan Cox outl(scb->buflen, host->addr + TUL_SCnt0);
167972d39feaSAlan Cox outb(TSC_XF_DMA_IN, host->addr + TUL_SCmd); /* 7/25/95 */
16801da177e4SLinus Torvalds
168172d39feaSAlan Cox if (scb->flags & SCF_SG) { /* S/G xfer */
168272d39feaSAlan Cox outl(((u32) scb->sglen) << 3, host->addr + TUL_XCntH);
168372d39feaSAlan Cox outl(scb->bufptr, host->addr + TUL_XAddH);
168472d39feaSAlan Cox outb(TAX_SG_IN, host->addr + TUL_XCmd);
16851da177e4SLinus Torvalds } else {
168672d39feaSAlan Cox outl(scb->buflen, host->addr + TUL_XCntH);
168772d39feaSAlan Cox outl(scb->bufptr, host->addr + TUL_XAddH);
168872d39feaSAlan Cox outb(TAX_X_IN, host->addr + TUL_XCmd);
16891da177e4SLinus Torvalds }
169072d39feaSAlan Cox scb->next_state = 0x5;
169172d39feaSAlan Cox return 0; /* return to OS, wait xfer done , let jas_isr come in */
16921da177e4SLinus Torvalds }
16931da177e4SLinus Torvalds
169472d39feaSAlan Cox /**
169572d39feaSAlan Cox * initio_xfer_data_out - Commence data output
169672d39feaSAlan Cox * @host: InitIO host in use
169772d39feaSAlan Cox *
169872d39feaSAlan Cox * Commence a block of data transfer. The transfer itself will
169972d39feaSAlan Cox * be managed by the controller and we will get a completion (or
170072d39feaSAlan Cox * failure) interrupt.
170172d39feaSAlan Cox */
17021da177e4SLinus Torvalds
initio_xfer_data_out(struct initio_host * host)170372d39feaSAlan Cox static int initio_xfer_data_out(struct initio_host * host)
17041da177e4SLinus Torvalds {
170572d39feaSAlan Cox struct scsi_ctrl_blk *scb = host->active;
17061da177e4SLinus Torvalds
170772d39feaSAlan Cox if ((scb->flags & SCF_DIR) == SCF_DIN)
170872d39feaSAlan Cox return 6; /* wrong direction */
17091da177e4SLinus Torvalds
171072d39feaSAlan Cox outl(scb->buflen, host->addr + TUL_SCnt0);
171172d39feaSAlan Cox outb(TSC_XF_DMA_OUT, host->addr + TUL_SCmd);
171272d39feaSAlan Cox
171372d39feaSAlan Cox if (scb->flags & SCF_SG) { /* S/G xfer */
171472d39feaSAlan Cox outl(((u32) scb->sglen) << 3, host->addr + TUL_XCntH);
171572d39feaSAlan Cox outl(scb->bufptr, host->addr + TUL_XAddH);
171672d39feaSAlan Cox outb(TAX_SG_OUT, host->addr + TUL_XCmd);
17171da177e4SLinus Torvalds } else {
171872d39feaSAlan Cox outl(scb->buflen, host->addr + TUL_XCntH);
171972d39feaSAlan Cox outl(scb->bufptr, host->addr + TUL_XAddH);
172072d39feaSAlan Cox outb(TAX_X_OUT, host->addr + TUL_XCmd);
17211da177e4SLinus Torvalds }
17221da177e4SLinus Torvalds
172372d39feaSAlan Cox scb->next_state = 0x5;
172472d39feaSAlan Cox return 0; /* return to OS, wait xfer done , let jas_isr come in */
17251da177e4SLinus Torvalds }
17261da177e4SLinus Torvalds
initio_xpad_in(struct initio_host * host)172772d39feaSAlan Cox int initio_xpad_in(struct initio_host * host)
17281da177e4SLinus Torvalds {
172972d39feaSAlan Cox struct scsi_ctrl_blk *scb = host->active;
173072d39feaSAlan Cox struct target_control *active_tc = host->active_tc;
17311da177e4SLinus Torvalds
173272d39feaSAlan Cox if ((scb->flags & SCF_DIR) != SCF_NO_DCHK)
173372d39feaSAlan Cox scb->hastat = HOST_DO_DU; /* over run */
17341da177e4SLinus Torvalds for (;;) {
173572d39feaSAlan Cox if (active_tc->js_period & TSC_WIDE_SCSI)
173672d39feaSAlan Cox outl(2, host->addr + TUL_SCnt0);
17371da177e4SLinus Torvalds else
173872d39feaSAlan Cox outl(1, host->addr + TUL_SCnt0);
17391da177e4SLinus Torvalds
174072d39feaSAlan Cox outb(TSC_XF_FIFO_IN, host->addr + TUL_SCmd);
174172d39feaSAlan Cox if (wait_tulip(host) == -1)
174272d39feaSAlan Cox return -1;
174372d39feaSAlan Cox if (host->phase != DATA_IN) {
174472d39feaSAlan Cox outb(TSC_FLUSH_FIFO, host->addr + TUL_SCtrl0);
174572d39feaSAlan Cox return 6;
17461da177e4SLinus Torvalds }
174772d39feaSAlan Cox inb(host->addr + TUL_SFifo);
17481da177e4SLinus Torvalds }
17491da177e4SLinus Torvalds }
17501da177e4SLinus Torvalds
initio_xpad_out(struct initio_host * host)175172d39feaSAlan Cox int initio_xpad_out(struct initio_host * host)
17521da177e4SLinus Torvalds {
175372d39feaSAlan Cox struct scsi_ctrl_blk *scb = host->active;
175472d39feaSAlan Cox struct target_control *active_tc = host->active_tc;
17551da177e4SLinus Torvalds
175672d39feaSAlan Cox if ((scb->flags & SCF_DIR) != SCF_NO_DCHK)
175772d39feaSAlan Cox scb->hastat = HOST_DO_DU; /* over run */
17581da177e4SLinus Torvalds for (;;) {
175972d39feaSAlan Cox if (active_tc->js_period & TSC_WIDE_SCSI)
176072d39feaSAlan Cox outl(2, host->addr + TUL_SCnt0);
17611da177e4SLinus Torvalds else
176272d39feaSAlan Cox outl(1, host->addr + TUL_SCnt0);
17631da177e4SLinus Torvalds
176472d39feaSAlan Cox outb(0, host->addr + TUL_SFifo);
176572d39feaSAlan Cox outb(TSC_XF_FIFO_OUT, host->addr + TUL_SCmd);
176672d39feaSAlan Cox if ((wait_tulip(host)) == -1)
176772d39feaSAlan Cox return -1;
176872d39feaSAlan Cox if (host->phase != DATA_OUT) { /* Disable wide CPU to allow read 16 bits */
176972d39feaSAlan Cox outb(TSC_HW_RESELECT, host->addr + TUL_SCtrl1);
177072d39feaSAlan Cox outb(TSC_FLUSH_FIFO, host->addr + TUL_SCtrl0);
177172d39feaSAlan Cox return 6;
17721da177e4SLinus Torvalds }
17731da177e4SLinus Torvalds }
17741da177e4SLinus Torvalds }
17751da177e4SLinus Torvalds
initio_status_msg(struct initio_host * host)177672d39feaSAlan Cox int initio_status_msg(struct initio_host * host)
17771da177e4SLinus Torvalds { /* status & MSG_IN */
177872d39feaSAlan Cox struct scsi_ctrl_blk *scb = host->active;
177972d39feaSAlan Cox u8 msg;
17801da177e4SLinus Torvalds
178172d39feaSAlan Cox outb(TSC_CMD_COMP, host->addr + TUL_SCmd);
178272d39feaSAlan Cox if (wait_tulip(host) == -1)
178372d39feaSAlan Cox return -1;
178472d39feaSAlan Cox
17851da177e4SLinus Torvalds /* get status */
178672d39feaSAlan Cox scb->tastat = inb(host->addr + TUL_SFifo);
17871da177e4SLinus Torvalds
178872d39feaSAlan Cox if (host->phase == MSG_OUT) {
178972d39feaSAlan Cox if (host->jsstatus0 & TSS_PAR_ERROR)
17909df17f46SHannes Reinecke outb(MSG_PARITY_ERROR, host->addr + TUL_SFifo);
179172d39feaSAlan Cox else
17929df17f46SHannes Reinecke outb(NOP, host->addr + TUL_SFifo);
179372d39feaSAlan Cox outb(TSC_XF_FIFO_OUT, host->addr + TUL_SCmd);
179472d39feaSAlan Cox return wait_tulip(host);
17951da177e4SLinus Torvalds }
179672d39feaSAlan Cox if (host->phase == MSG_IN) {
179772d39feaSAlan Cox msg = inb(host->addr + TUL_SFifo);
179872d39feaSAlan Cox if (host->jsstatus0 & TSS_PAR_ERROR) { /* Parity error */
179972d39feaSAlan Cox if ((initio_msgin_accept(host)) == -1)
180072d39feaSAlan Cox return -1;
180172d39feaSAlan Cox if (host->phase != MSG_OUT)
180272d39feaSAlan Cox return initio_bad_seq(host);
18039df17f46SHannes Reinecke outb(MSG_PARITY_ERROR, host->addr + TUL_SFifo);
180472d39feaSAlan Cox outb(TSC_XF_FIFO_OUT, host->addr + TUL_SCmd);
180572d39feaSAlan Cox return wait_tulip(host);
18061da177e4SLinus Torvalds }
18071da177e4SLinus Torvalds if (msg == 0) { /* Command complete */
18081da177e4SLinus Torvalds
180972d39feaSAlan Cox if ((scb->tastat & 0x18) == 0x10) /* No link support */
181072d39feaSAlan Cox return initio_bad_seq(host);
181172d39feaSAlan Cox outb(TSC_FLUSH_FIFO, host->addr + TUL_SCtrl0);
181272d39feaSAlan Cox outb(TSC_MSG_ACCEPT, host->addr + TUL_SCmd);
181372d39feaSAlan Cox return initio_wait_done_disc(host);
18141da177e4SLinus Torvalds
18151da177e4SLinus Torvalds }
18169df17f46SHannes Reinecke if (msg == LINKED_CMD_COMPLETE ||
18179df17f46SHannes Reinecke msg == LINKED_FLG_CMD_COMPLETE) {
181872d39feaSAlan Cox if ((scb->tastat & 0x18) == 0x10)
181972d39feaSAlan Cox return initio_msgin_accept(host);
18201da177e4SLinus Torvalds }
18211da177e4SLinus Torvalds }
182272d39feaSAlan Cox return initio_bad_seq(host);
18231da177e4SLinus Torvalds }
18241da177e4SLinus Torvalds
18251da177e4SLinus Torvalds
18261da177e4SLinus Torvalds /* scsi bus free */
int_initio_busfree(struct initio_host * host)182772d39feaSAlan Cox int int_initio_busfree(struct initio_host * host)
18281da177e4SLinus Torvalds {
182972d39feaSAlan Cox struct scsi_ctrl_blk *scb = host->active;
18301da177e4SLinus Torvalds
183172d39feaSAlan Cox if (scb != NULL) {
183272d39feaSAlan Cox if (scb->status & SCB_SELECT) { /* selection timeout */
183372d39feaSAlan Cox initio_unlink_pend_scb(host, scb);
183472d39feaSAlan Cox scb->hastat = HOST_SEL_TOUT;
183572d39feaSAlan Cox initio_append_done_scb(host, scb);
18361da177e4SLinus Torvalds } else { /* Unexpected bus free */
183772d39feaSAlan Cox initio_unlink_busy_scb(host, scb);
183872d39feaSAlan Cox scb->hastat = HOST_BUS_FREE;
183972d39feaSAlan Cox initio_append_done_scb(host, scb);
18401da177e4SLinus Torvalds }
184172d39feaSAlan Cox host->active = NULL;
184272d39feaSAlan Cox host->active_tc = NULL;
18431da177e4SLinus Torvalds }
184472d39feaSAlan Cox outb(TSC_FLUSH_FIFO, host->addr + TUL_SCtrl0); /* Flush SCSI FIFO */
184572d39feaSAlan Cox outb(TSC_INITDEFAULT, host->addr + TUL_SConfig);
184672d39feaSAlan Cox outb(TSC_HW_RESELECT, host->addr + TUL_SCtrl1); /* Enable HW reselect */
184772d39feaSAlan Cox return -1;
18481da177e4SLinus Torvalds }
18491da177e4SLinus Torvalds
18501da177e4SLinus Torvalds
185172d39feaSAlan Cox /**
185272d39feaSAlan Cox * int_initio_scsi_rst - SCSI reset occurred
185372d39feaSAlan Cox * @host: Host seeing the reset
185472d39feaSAlan Cox *
185572d39feaSAlan Cox * A SCSI bus reset has occurred. Clean up any pending transfer
185672d39feaSAlan Cox * the hardware is doing by DMA and then abort all active and
185772d39feaSAlan Cox * disconnected commands. The mid layer should sort the rest out
185872d39feaSAlan Cox * for us
185972d39feaSAlan Cox */
186072d39feaSAlan Cox
int_initio_scsi_rst(struct initio_host * host)186172d39feaSAlan Cox static int int_initio_scsi_rst(struct initio_host * host)
18621da177e4SLinus Torvalds {
186372d39feaSAlan Cox struct scsi_ctrl_blk *scb;
18641da177e4SLinus Torvalds int i;
18651da177e4SLinus Torvalds
18661da177e4SLinus Torvalds /* if DMA xfer is pending, abort DMA xfer */
186772d39feaSAlan Cox if (inb(host->addr + TUL_XStatus) & 0x01) {
186872d39feaSAlan Cox outb(TAX_X_ABT | TAX_X_CLR_FIFO, host->addr + TUL_XCmd);
18691da177e4SLinus Torvalds /* wait Abort DMA xfer done */
187072d39feaSAlan Cox while ((inb(host->addr + TUL_Int) & 0x04) == 0)
187172d39feaSAlan Cox cpu_relax();
187272d39feaSAlan Cox outb(TSC_FLUSH_FIFO, host->addr + TUL_SCtrl0);
18731da177e4SLinus Torvalds }
18741da177e4SLinus Torvalds /* Abort all active & disconnected scb */
187572d39feaSAlan Cox while ((scb = initio_pop_busy_scb(host)) != NULL) {
187672d39feaSAlan Cox scb->hastat = HOST_BAD_PHAS;
187772d39feaSAlan Cox initio_append_done_scb(host, scb);
18781da177e4SLinus Torvalds }
187972d39feaSAlan Cox host->active = NULL;
188072d39feaSAlan Cox host->active_tc = NULL;
18811da177e4SLinus Torvalds
18821da177e4SLinus Torvalds /* clr sync nego. done flag */
188372d39feaSAlan Cox for (i = 0; i < host->max_tar; i++)
188472d39feaSAlan Cox host->targets[i].flags &= ~(TCF_SYNC_DONE | TCF_WDTR_DONE);
188572d39feaSAlan Cox return -1;
18861da177e4SLinus Torvalds }
18871da177e4SLinus Torvalds
188872d39feaSAlan Cox /**
1889100ec495SLee Jones * int_initio_resel - Reselection occurred
189072d39feaSAlan Cox * @host: InitIO host adapter
189172d39feaSAlan Cox *
189272d39feaSAlan Cox * A SCSI reselection event has been signalled and the interrupt
189372d39feaSAlan Cox * is now being processed. Work out which command block needs attention
189472d39feaSAlan Cox * and continue processing that command.
189572d39feaSAlan Cox */
18961da177e4SLinus Torvalds
int_initio_resel(struct initio_host * host)189772d39feaSAlan Cox int int_initio_resel(struct initio_host * host)
18981da177e4SLinus Torvalds {
189972d39feaSAlan Cox struct scsi_ctrl_blk *scb;
190072d39feaSAlan Cox struct target_control *active_tc;
190172d39feaSAlan Cox u8 tag, msg = 0;
190272d39feaSAlan Cox u8 tar, lun;
19031da177e4SLinus Torvalds
190472d39feaSAlan Cox if ((scb = host->active) != NULL) {
190572d39feaSAlan Cox /* FIXME: Why check and not just clear ? */
190672d39feaSAlan Cox if (scb->status & SCB_SELECT) /* if waiting for selection complete */
190772d39feaSAlan Cox scb->status &= ~SCB_SELECT;
190872d39feaSAlan Cox host->active = NULL;
19091da177e4SLinus Torvalds }
19101da177e4SLinus Torvalds /* --------- get target id---------------------- */
191172d39feaSAlan Cox tar = inb(host->addr + TUL_SBusId);
19121da177e4SLinus Torvalds /* ------ get LUN from Identify message----------- */
191372d39feaSAlan Cox lun = inb(host->addr + TUL_SIdent) & 0x0F;
19141da177e4SLinus Torvalds /* 07/22/98 from 0x1F -> 0x0F */
191572d39feaSAlan Cox active_tc = &host->targets[tar];
191672d39feaSAlan Cox host->active_tc = active_tc;
191772d39feaSAlan Cox outb(active_tc->sconfig0, host->addr + TUL_SConfig);
191872d39feaSAlan Cox outb(active_tc->js_period, host->addr + TUL_SPeriod);
19191da177e4SLinus Torvalds
19201da177e4SLinus Torvalds /* ------------- tag queueing ? ------------------- */
192172d39feaSAlan Cox if (active_tc->drv_flags & TCF_DRV_EN_TAG) {
192272d39feaSAlan Cox if ((initio_msgin_accept(host)) == -1)
192372d39feaSAlan Cox return -1;
192472d39feaSAlan Cox if (host->phase != MSG_IN)
19251da177e4SLinus Torvalds goto no_tag;
192672d39feaSAlan Cox outl(1, host->addr + TUL_SCnt0);
192772d39feaSAlan Cox outb(TSC_XF_FIFO_IN, host->addr + TUL_SCmd);
192872d39feaSAlan Cox if (wait_tulip(host) == -1)
192972d39feaSAlan Cox return -1;
193072d39feaSAlan Cox msg = inb(host->addr + TUL_SFifo); /* Read Tag Message */
19311da177e4SLinus Torvalds
19329df17f46SHannes Reinecke if (msg < SIMPLE_QUEUE_TAG || msg > ORDERED_QUEUE_TAG)
19339df17f46SHannes Reinecke /* Is simple Tag */
19341da177e4SLinus Torvalds goto no_tag;
19351da177e4SLinus Torvalds
193672d39feaSAlan Cox if (initio_msgin_accept(host) == -1)
193772d39feaSAlan Cox return -1;
19381da177e4SLinus Torvalds
193972d39feaSAlan Cox if (host->phase != MSG_IN)
19401da177e4SLinus Torvalds goto no_tag;
19411da177e4SLinus Torvalds
194272d39feaSAlan Cox outl(1, host->addr + TUL_SCnt0);
194372d39feaSAlan Cox outb(TSC_XF_FIFO_IN, host->addr + TUL_SCmd);
194472d39feaSAlan Cox if (wait_tulip(host) == -1)
194572d39feaSAlan Cox return -1;
194672d39feaSAlan Cox tag = inb(host->addr + TUL_SFifo); /* Read Tag ID */
194772d39feaSAlan Cox scb = host->scb + tag;
194872d39feaSAlan Cox if (scb->target != tar || scb->lun != lun) {
194972d39feaSAlan Cox return initio_msgout_abort_tag(host);
19501da177e4SLinus Torvalds }
195172d39feaSAlan Cox if (scb->status != SCB_BUSY) { /* 03/24/95 */
195272d39feaSAlan Cox return initio_msgout_abort_tag(host);
19531da177e4SLinus Torvalds }
195472d39feaSAlan Cox host->active = scb;
195572d39feaSAlan Cox if ((initio_msgin_accept(host)) == -1)
195672d39feaSAlan Cox return -1;
19571da177e4SLinus Torvalds } else { /* No tag */
19581da177e4SLinus Torvalds no_tag:
195972d39feaSAlan Cox if ((scb = initio_find_busy_scb(host, tar | (lun << 8))) == NULL) {
196072d39feaSAlan Cox return initio_msgout_abort_targ(host);
19611da177e4SLinus Torvalds }
196272d39feaSAlan Cox host->active = scb;
196372d39feaSAlan Cox if (!(active_tc->drv_flags & TCF_DRV_EN_TAG)) {
196472d39feaSAlan Cox if ((initio_msgin_accept(host)) == -1)
196572d39feaSAlan Cox return -1;
19661da177e4SLinus Torvalds }
19671da177e4SLinus Torvalds }
19681da177e4SLinus Torvalds return 0;
19691da177e4SLinus Torvalds }
19701da177e4SLinus Torvalds
197172d39feaSAlan Cox /**
197272d39feaSAlan Cox * int_initio_bad_seq - out of phase
197372d39feaSAlan Cox * @host: InitIO host flagging event
197472d39feaSAlan Cox *
197572d39feaSAlan Cox * We have ended up out of phase somehow. Reset the host controller
197672d39feaSAlan Cox * and throw all our toys out of the pram. Let the midlayer clean up
197772d39feaSAlan Cox */
19781da177e4SLinus Torvalds
int_initio_bad_seq(struct initio_host * host)197972d39feaSAlan Cox static int int_initio_bad_seq(struct initio_host * host)
19801da177e4SLinus Torvalds { /* target wrong phase */
198172d39feaSAlan Cox struct scsi_ctrl_blk *scb;
19821da177e4SLinus Torvalds int i;
19831da177e4SLinus Torvalds
198472d39feaSAlan Cox initio_reset_scsi(host, 10);
19851da177e4SLinus Torvalds
198672d39feaSAlan Cox while ((scb = initio_pop_busy_scb(host)) != NULL) {
198772d39feaSAlan Cox scb->hastat = HOST_BAD_PHAS;
198872d39feaSAlan Cox initio_append_done_scb(host, scb);
19891da177e4SLinus Torvalds }
199072d39feaSAlan Cox for (i = 0; i < host->max_tar; i++)
199172d39feaSAlan Cox host->targets[i].flags &= ~(TCF_SYNC_DONE | TCF_WDTR_DONE);
199272d39feaSAlan Cox return -1;
19931da177e4SLinus Torvalds }
19941da177e4SLinus Torvalds
19951da177e4SLinus Torvalds
199672d39feaSAlan Cox /**
199772d39feaSAlan Cox * initio_msgout_abort_targ - abort a tag
199872d39feaSAlan Cox * @host: InitIO host
199972d39feaSAlan Cox *
200072d39feaSAlan Cox * Abort when the target/lun does not match or when our SCB is not
200172d39feaSAlan Cox * busy. Used by untagged commands.
200272d39feaSAlan Cox */
200372d39feaSAlan Cox
initio_msgout_abort_targ(struct initio_host * host)200472d39feaSAlan Cox static int initio_msgout_abort_targ(struct initio_host * host)
20051da177e4SLinus Torvalds {
20061da177e4SLinus Torvalds
200772d39feaSAlan Cox outb(((inb(host->addr + TUL_SSignal) & (TSC_SET_ACK | 7)) | TSC_SET_ATN), host->addr + TUL_SSignal);
200872d39feaSAlan Cox if (initio_msgin_accept(host) == -1)
200972d39feaSAlan Cox return -1;
201072d39feaSAlan Cox if (host->phase != MSG_OUT)
201172d39feaSAlan Cox return initio_bad_seq(host);
20121da177e4SLinus Torvalds
20139df17f46SHannes Reinecke outb(ABORT_TASK_SET, host->addr + TUL_SFifo);
201472d39feaSAlan Cox outb(TSC_XF_FIFO_OUT, host->addr + TUL_SCmd);
20151da177e4SLinus Torvalds
201672d39feaSAlan Cox return initio_wait_disc(host);
20171da177e4SLinus Torvalds }
20181da177e4SLinus Torvalds
201972d39feaSAlan Cox /**
202072d39feaSAlan Cox * initio_msgout_abort_tag - abort a tag
202172d39feaSAlan Cox * @host: InitIO host
202272d39feaSAlan Cox *
202372d39feaSAlan Cox * Abort when the target/lun does not match or when our SCB is not
202472d39feaSAlan Cox * busy. Used for tagged commands.
202572d39feaSAlan Cox */
202672d39feaSAlan Cox
initio_msgout_abort_tag(struct initio_host * host)202772d39feaSAlan Cox static int initio_msgout_abort_tag(struct initio_host * host)
20281da177e4SLinus Torvalds {
20291da177e4SLinus Torvalds
203072d39feaSAlan Cox outb(((inb(host->addr + TUL_SSignal) & (TSC_SET_ACK | 7)) | TSC_SET_ATN), host->addr + TUL_SSignal);
203172d39feaSAlan Cox if (initio_msgin_accept(host) == -1)
203272d39feaSAlan Cox return -1;
203372d39feaSAlan Cox if (host->phase != MSG_OUT)
203472d39feaSAlan Cox return initio_bad_seq(host);
20351da177e4SLinus Torvalds
20369df17f46SHannes Reinecke outb(ABORT_TASK, host->addr + TUL_SFifo);
203772d39feaSAlan Cox outb(TSC_XF_FIFO_OUT, host->addr + TUL_SCmd);
20381da177e4SLinus Torvalds
203972d39feaSAlan Cox return initio_wait_disc(host);
20401da177e4SLinus Torvalds
20411da177e4SLinus Torvalds }
20421da177e4SLinus Torvalds
204372d39feaSAlan Cox /**
204472d39feaSAlan Cox * initio_msgin - Message in
204572d39feaSAlan Cox * @host: InitIO Host
204672d39feaSAlan Cox *
204772d39feaSAlan Cox * Process incoming message
204872d39feaSAlan Cox */
initio_msgin(struct initio_host * host)204972d39feaSAlan Cox static int initio_msgin(struct initio_host * host)
20501da177e4SLinus Torvalds {
205172d39feaSAlan Cox struct target_control *active_tc;
20521da177e4SLinus Torvalds
20531da177e4SLinus Torvalds for (;;) {
205472d39feaSAlan Cox outb(TSC_FLUSH_FIFO, host->addr + TUL_SCtrl0);
20551da177e4SLinus Torvalds
205672d39feaSAlan Cox outl(1, host->addr + TUL_SCnt0);
205772d39feaSAlan Cox outb(TSC_XF_FIFO_IN, host->addr + TUL_SCmd);
205872d39feaSAlan Cox if (wait_tulip(host) == -1)
205972d39feaSAlan Cox return -1;
20601da177e4SLinus Torvalds
206172d39feaSAlan Cox switch (inb(host->addr + TUL_SFifo)) {
20629df17f46SHannes Reinecke case DISCONNECT: /* Disconnect msg */
206372d39feaSAlan Cox outb(TSC_MSG_ACCEPT, host->addr + TUL_SCmd);
206472d39feaSAlan Cox return initio_wait_disc(host);
20659df17f46SHannes Reinecke case SAVE_POINTERS:
20669df17f46SHannes Reinecke case RESTORE_POINTERS:
20679df17f46SHannes Reinecke case NOP:
206872d39feaSAlan Cox initio_msgin_accept(host);
20691da177e4SLinus Torvalds break;
20709df17f46SHannes Reinecke case MESSAGE_REJECT: /* Clear ATN first */
207172d39feaSAlan Cox outb((inb(host->addr + TUL_SSignal) & (TSC_SET_ACK | 7)),
207272d39feaSAlan Cox host->addr + TUL_SSignal);
207372d39feaSAlan Cox active_tc = host->active_tc;
207472d39feaSAlan Cox if ((active_tc->flags & (TCF_SYNC_DONE | TCF_NO_SYNC_NEGO)) == 0) /* do sync nego */
207572d39feaSAlan Cox outb(((inb(host->addr + TUL_SSignal) & (TSC_SET_ACK | 7)) | TSC_SET_ATN),
207672d39feaSAlan Cox host->addr + TUL_SSignal);
207772d39feaSAlan Cox initio_msgin_accept(host);
20781da177e4SLinus Torvalds break;
20799df17f46SHannes Reinecke case EXTENDED_MESSAGE: /* extended msg */
208072d39feaSAlan Cox initio_msgin_extend(host);
20811da177e4SLinus Torvalds break;
20829df17f46SHannes Reinecke case IGNORE_WIDE_RESIDUE:
208372d39feaSAlan Cox initio_msgin_accept(host);
20841da177e4SLinus Torvalds break;
20859df17f46SHannes Reinecke case COMMAND_COMPLETE:
208672d39feaSAlan Cox outb(TSC_FLUSH_FIFO, host->addr + TUL_SCtrl0);
208772d39feaSAlan Cox outb(TSC_MSG_ACCEPT, host->addr + TUL_SCmd);
208872d39feaSAlan Cox return initio_wait_done_disc(host);
20891da177e4SLinus Torvalds default:
209072d39feaSAlan Cox initio_msgout_reject(host);
20911da177e4SLinus Torvalds break;
20921da177e4SLinus Torvalds }
209372d39feaSAlan Cox if (host->phase != MSG_IN)
209472d39feaSAlan Cox return host->phase;
20951da177e4SLinus Torvalds }
20961da177e4SLinus Torvalds /* statement won't reach here */
20971da177e4SLinus Torvalds }
20981da177e4SLinus Torvalds
initio_msgout_reject(struct initio_host * host)209972d39feaSAlan Cox static int initio_msgout_reject(struct initio_host * host)
21001da177e4SLinus Torvalds {
210172d39feaSAlan Cox outb(((inb(host->addr + TUL_SSignal) & (TSC_SET_ACK | 7)) | TSC_SET_ATN), host->addr + TUL_SSignal);
21021da177e4SLinus Torvalds
210372d39feaSAlan Cox if (initio_msgin_accept(host) == -1)
210472d39feaSAlan Cox return -1;
21051da177e4SLinus Torvalds
210672d39feaSAlan Cox if (host->phase == MSG_OUT) {
21079df17f46SHannes Reinecke outb(MESSAGE_REJECT, host->addr + TUL_SFifo); /* Msg reject */
210872d39feaSAlan Cox outb(TSC_XF_FIFO_OUT, host->addr + TUL_SCmd);
210972d39feaSAlan Cox return wait_tulip(host);
21101da177e4SLinus Torvalds }
211172d39feaSAlan Cox return host->phase;
21121da177e4SLinus Torvalds }
21131da177e4SLinus Torvalds
initio_msgout_ide(struct initio_host * host)211472d39feaSAlan Cox static int initio_msgout_ide(struct initio_host * host)
21151da177e4SLinus Torvalds {
21169df17f46SHannes Reinecke outb(INITIATOR_ERROR, host->addr + TUL_SFifo); /* Initiator Detected Error */
211772d39feaSAlan Cox outb(TSC_XF_FIFO_OUT, host->addr + TUL_SCmd);
211872d39feaSAlan Cox return wait_tulip(host);
21191da177e4SLinus Torvalds }
21201da177e4SLinus Torvalds
initio_msgin_extend(struct initio_host * host)212172d39feaSAlan Cox static int initio_msgin_extend(struct initio_host * host)
21221da177e4SLinus Torvalds {
212372d39feaSAlan Cox u8 len, idx;
21241da177e4SLinus Torvalds
212572d39feaSAlan Cox if (initio_msgin_accept(host) != MSG_IN)
212672d39feaSAlan Cox return host->phase;
21271da177e4SLinus Torvalds
21281da177e4SLinus Torvalds /* Get extended msg length */
212972d39feaSAlan Cox outl(1, host->addr + TUL_SCnt0);
213072d39feaSAlan Cox outb(TSC_XF_FIFO_IN, host->addr + TUL_SCmd);
213172d39feaSAlan Cox if (wait_tulip(host) == -1)
213272d39feaSAlan Cox return -1;
21331da177e4SLinus Torvalds
213472d39feaSAlan Cox len = inb(host->addr + TUL_SFifo);
213572d39feaSAlan Cox host->msg[0] = len;
21361da177e4SLinus Torvalds for (idx = 1; len != 0; len--) {
21371da177e4SLinus Torvalds
213872d39feaSAlan Cox if ((initio_msgin_accept(host)) != MSG_IN)
213972d39feaSAlan Cox return host->phase;
214072d39feaSAlan Cox outl(1, host->addr + TUL_SCnt0);
214172d39feaSAlan Cox outb(TSC_XF_FIFO_IN, host->addr + TUL_SCmd);
214272d39feaSAlan Cox if (wait_tulip(host) == -1)
214372d39feaSAlan Cox return -1;
214472d39feaSAlan Cox host->msg[idx++] = inb(host->addr + TUL_SFifo);
21451da177e4SLinus Torvalds }
214672d39feaSAlan Cox if (host->msg[1] == 1) { /* if it's synchronous data transfer request */
214772d39feaSAlan Cox u8 r;
214872d39feaSAlan Cox if (host->msg[0] != 3) /* if length is not right */
214972d39feaSAlan Cox return initio_msgout_reject(host);
215072d39feaSAlan Cox if (host->active_tc->flags & TCF_NO_SYNC_NEGO) { /* Set OFFSET=0 to do async, nego back */
215172d39feaSAlan Cox host->msg[3] = 0;
21521da177e4SLinus Torvalds } else {
215372d39feaSAlan Cox if (initio_msgin_sync(host) == 0 &&
215472d39feaSAlan Cox (host->active_tc->flags & TCF_SYNC_DONE)) {
215572d39feaSAlan Cox initio_sync_done(host);
215672d39feaSAlan Cox return initio_msgin_accept(host);
21571da177e4SLinus Torvalds }
21581da177e4SLinus Torvalds }
21591da177e4SLinus Torvalds
216072d39feaSAlan Cox r = inb(host->addr + TUL_SSignal);
216172d39feaSAlan Cox outb((r & (TSC_SET_ACK | 7)) | TSC_SET_ATN,
216272d39feaSAlan Cox host->addr + TUL_SSignal);
216372d39feaSAlan Cox if (initio_msgin_accept(host) != MSG_OUT)
216472d39feaSAlan Cox return host->phase;
21651da177e4SLinus Torvalds /* sync msg out */
216672d39feaSAlan Cox outb(TSC_FLUSH_FIFO, host->addr + TUL_SCtrl0);
21671da177e4SLinus Torvalds
216872d39feaSAlan Cox initio_sync_done(host);
21691da177e4SLinus Torvalds
21709df17f46SHannes Reinecke outb(EXTENDED_MESSAGE, host->addr + TUL_SFifo);
217172d39feaSAlan Cox outb(3, host->addr + TUL_SFifo);
21729df17f46SHannes Reinecke outb(EXTENDED_SDTR, host->addr + TUL_SFifo);
217372d39feaSAlan Cox outb(host->msg[2], host->addr + TUL_SFifo);
217472d39feaSAlan Cox outb(host->msg[3], host->addr + TUL_SFifo);
217572d39feaSAlan Cox outb(TSC_XF_FIFO_OUT, host->addr + TUL_SCmd);
217672d39feaSAlan Cox return wait_tulip(host);
21771da177e4SLinus Torvalds }
217872d39feaSAlan Cox if (host->msg[0] != 2 || host->msg[1] != 3)
217972d39feaSAlan Cox return initio_msgout_reject(host);
21801da177e4SLinus Torvalds /* if it's WIDE DATA XFER REQ */
218172d39feaSAlan Cox if (host->active_tc->flags & TCF_NO_WDTR) {
218272d39feaSAlan Cox host->msg[2] = 0;
21831da177e4SLinus Torvalds } else {
218472d39feaSAlan Cox if (host->msg[2] > 2) /* > 32 bits */
218572d39feaSAlan Cox return initio_msgout_reject(host);
218672d39feaSAlan Cox if (host->msg[2] == 2) { /* == 32 */
218772d39feaSAlan Cox host->msg[2] = 1;
21881da177e4SLinus Torvalds } else {
218972d39feaSAlan Cox if ((host->active_tc->flags & TCF_NO_WDTR) == 0) {
219072d39feaSAlan Cox wdtr_done(host);
219172d39feaSAlan Cox if ((host->active_tc->flags & (TCF_SYNC_DONE | TCF_NO_SYNC_NEGO)) == 0)
219272d39feaSAlan Cox outb(((inb(host->addr + TUL_SSignal) & (TSC_SET_ACK | 7)) | TSC_SET_ATN), host->addr + TUL_SSignal);
219372d39feaSAlan Cox return initio_msgin_accept(host);
21941da177e4SLinus Torvalds }
21951da177e4SLinus Torvalds }
21961da177e4SLinus Torvalds }
219772d39feaSAlan Cox outb(((inb(host->addr + TUL_SSignal) & (TSC_SET_ACK | 7)) | TSC_SET_ATN), host->addr + TUL_SSignal);
21981da177e4SLinus Torvalds
219972d39feaSAlan Cox if (initio_msgin_accept(host) != MSG_OUT)
220072d39feaSAlan Cox return host->phase;
22011da177e4SLinus Torvalds /* WDTR msg out */
22029df17f46SHannes Reinecke outb(EXTENDED_MESSAGE, host->addr + TUL_SFifo);
220372d39feaSAlan Cox outb(2, host->addr + TUL_SFifo);
22049df17f46SHannes Reinecke outb(EXTENDED_WDTR, host->addr + TUL_SFifo);
220572d39feaSAlan Cox outb(host->msg[2], host->addr + TUL_SFifo);
220672d39feaSAlan Cox outb(TSC_XF_FIFO_OUT, host->addr + TUL_SCmd);
220772d39feaSAlan Cox return wait_tulip(host);
22081da177e4SLinus Torvalds }
22091da177e4SLinus Torvalds
initio_msgin_sync(struct initio_host * host)221072d39feaSAlan Cox static int initio_msgin_sync(struct initio_host * host)
22111da177e4SLinus Torvalds {
22121da177e4SLinus Torvalds char default_period;
22131da177e4SLinus Torvalds
221472d39feaSAlan Cox default_period = initio_rate_tbl[host->active_tc->flags & TCF_SCSI_RATE];
221572d39feaSAlan Cox if (host->msg[3] > MAX_OFFSET) {
221672d39feaSAlan Cox host->msg[3] = MAX_OFFSET;
221772d39feaSAlan Cox if (host->msg[2] < default_period) {
221872d39feaSAlan Cox host->msg[2] = default_period;
22191da177e4SLinus Torvalds return 1;
22201da177e4SLinus Torvalds }
222172d39feaSAlan Cox if (host->msg[2] >= 59) /* Change to async */
222272d39feaSAlan Cox host->msg[3] = 0;
22231da177e4SLinus Torvalds return 1;
22241da177e4SLinus Torvalds }
22251da177e4SLinus Torvalds /* offset requests asynchronous transfers ? */
222672d39feaSAlan Cox if (host->msg[3] == 0) {
22271da177e4SLinus Torvalds return 0;
22281da177e4SLinus Torvalds }
222972d39feaSAlan Cox if (host->msg[2] < default_period) {
223072d39feaSAlan Cox host->msg[2] = default_period;
22311da177e4SLinus Torvalds return 1;
22321da177e4SLinus Torvalds }
223372d39feaSAlan Cox if (host->msg[2] >= 59) {
223472d39feaSAlan Cox host->msg[3] = 0;
22351da177e4SLinus Torvalds return 1;
22361da177e4SLinus Torvalds }
22371da177e4SLinus Torvalds return 0;
22381da177e4SLinus Torvalds }
22391da177e4SLinus Torvalds
wdtr_done(struct initio_host * host)224072d39feaSAlan Cox static int wdtr_done(struct initio_host * host)
22411da177e4SLinus Torvalds {
224272d39feaSAlan Cox host->active_tc->flags &= ~TCF_SYNC_DONE;
224372d39feaSAlan Cox host->active_tc->flags |= TCF_WDTR_DONE;
22441da177e4SLinus Torvalds
224572d39feaSAlan Cox host->active_tc->js_period = 0;
224672d39feaSAlan Cox if (host->msg[2]) /* if 16 bit */
224772d39feaSAlan Cox host->active_tc->js_period |= TSC_WIDE_SCSI;
224872d39feaSAlan Cox host->active_tc->sconfig0 &= ~TSC_ALT_PERIOD;
224972d39feaSAlan Cox outb(host->active_tc->sconfig0, host->addr + TUL_SConfig);
225072d39feaSAlan Cox outb(host->active_tc->js_period, host->addr + TUL_SPeriod);
22511da177e4SLinus Torvalds
22521da177e4SLinus Torvalds return 1;
22531da177e4SLinus Torvalds }
22541da177e4SLinus Torvalds
initio_sync_done(struct initio_host * host)225572d39feaSAlan Cox static int initio_sync_done(struct initio_host * host)
22561da177e4SLinus Torvalds {
22571da177e4SLinus Torvalds int i;
22581da177e4SLinus Torvalds
225972d39feaSAlan Cox host->active_tc->flags |= TCF_SYNC_DONE;
22601da177e4SLinus Torvalds
226172d39feaSAlan Cox if (host->msg[3]) {
226272d39feaSAlan Cox host->active_tc->js_period |= host->msg[3];
22631da177e4SLinus Torvalds for (i = 0; i < 8; i++) {
226472d39feaSAlan Cox if (initio_rate_tbl[i] >= host->msg[2]) /* pick the big one */
22651da177e4SLinus Torvalds break;
22661da177e4SLinus Torvalds }
226772d39feaSAlan Cox host->active_tc->js_period |= (i << 4);
226872d39feaSAlan Cox host->active_tc->sconfig0 |= TSC_ALT_PERIOD;
22691da177e4SLinus Torvalds }
227072d39feaSAlan Cox outb(host->active_tc->sconfig0, host->addr + TUL_SConfig);
227172d39feaSAlan Cox outb(host->active_tc->js_period, host->addr + TUL_SPeriod);
22721da177e4SLinus Torvalds
227372d39feaSAlan Cox return -1;
22741da177e4SLinus Torvalds }
22751da177e4SLinus Torvalds
22761da177e4SLinus Torvalds
initio_post_scsi_rst(struct initio_host * host)227772d39feaSAlan Cox static int initio_post_scsi_rst(struct initio_host * host)
22781da177e4SLinus Torvalds {
227972d39feaSAlan Cox struct scsi_ctrl_blk *scb;
228072d39feaSAlan Cox struct target_control *active_tc;
22811da177e4SLinus Torvalds int i;
22821da177e4SLinus Torvalds
228372d39feaSAlan Cox host->active = NULL;
228472d39feaSAlan Cox host->active_tc = NULL;
228572d39feaSAlan Cox host->flags = 0;
22861da177e4SLinus Torvalds
228772d39feaSAlan Cox while ((scb = initio_pop_busy_scb(host)) != NULL) {
228872d39feaSAlan Cox scb->hastat = HOST_BAD_PHAS;
228972d39feaSAlan Cox initio_append_done_scb(host, scb);
22901da177e4SLinus Torvalds }
22911da177e4SLinus Torvalds /* clear sync done flag */
229272d39feaSAlan Cox active_tc = &host->targets[0];
229372d39feaSAlan Cox for (i = 0; i < host->max_tar; active_tc++, i++) {
229472d39feaSAlan Cox active_tc->flags &= ~(TCF_SYNC_DONE | TCF_WDTR_DONE);
22951da177e4SLinus Torvalds /* Initialize the sync. xfer register values to an asyn xfer */
229672d39feaSAlan Cox active_tc->js_period = 0;
229772d39feaSAlan Cox active_tc->sconfig0 = host->sconf1;
229872d39feaSAlan Cox host->act_tags[0] = 0; /* 07/22/98 */
229972d39feaSAlan Cox host->targets[i].flags &= ~TCF_BUSY; /* 07/22/98 */
23001da177e4SLinus Torvalds } /* for */
23011da177e4SLinus Torvalds
230272d39feaSAlan Cox return -1;
23031da177e4SLinus Torvalds }
23041da177e4SLinus Torvalds
initio_select_atn_stop(struct initio_host * host,struct scsi_ctrl_blk * scb)230572d39feaSAlan Cox static void initio_select_atn_stop(struct initio_host * host, struct scsi_ctrl_blk * scb)
23061da177e4SLinus Torvalds {
230772d39feaSAlan Cox scb->status |= SCB_SELECT;
230872d39feaSAlan Cox scb->next_state = 0x1;
230972d39feaSAlan Cox host->active = scb;
231072d39feaSAlan Cox host->active_tc = &host->targets[scb->target];
231172d39feaSAlan Cox outb(TSC_SELATNSTOP, host->addr + TUL_SCmd);
23121da177e4SLinus Torvalds }
23131da177e4SLinus Torvalds
23141da177e4SLinus Torvalds
initio_select_atn(struct initio_host * host,struct scsi_ctrl_blk * scb)231572d39feaSAlan Cox static void initio_select_atn(struct initio_host * host, struct scsi_ctrl_blk * scb)
23161da177e4SLinus Torvalds {
23171da177e4SLinus Torvalds int i;
23181da177e4SLinus Torvalds
231972d39feaSAlan Cox scb->status |= SCB_SELECT;
232072d39feaSAlan Cox scb->next_state = 0x2;
23211da177e4SLinus Torvalds
232272d39feaSAlan Cox outb(scb->ident, host->addr + TUL_SFifo);
232372d39feaSAlan Cox for (i = 0; i < (int) scb->cdblen; i++)
232472d39feaSAlan Cox outb(scb->cdb[i], host->addr + TUL_SFifo);
232572d39feaSAlan Cox host->active_tc = &host->targets[scb->target];
232672d39feaSAlan Cox host->active = scb;
232772d39feaSAlan Cox outb(TSC_SEL_ATN, host->addr + TUL_SCmd);
23281da177e4SLinus Torvalds }
23291da177e4SLinus Torvalds
initio_select_atn3(struct initio_host * host,struct scsi_ctrl_blk * scb)233072d39feaSAlan Cox static void initio_select_atn3(struct initio_host * host, struct scsi_ctrl_blk * scb)
23311da177e4SLinus Torvalds {
23321da177e4SLinus Torvalds int i;
23331da177e4SLinus Torvalds
233472d39feaSAlan Cox scb->status |= SCB_SELECT;
233572d39feaSAlan Cox scb->next_state = 0x2;
23361da177e4SLinus Torvalds
233772d39feaSAlan Cox outb(scb->ident, host->addr + TUL_SFifo);
233872d39feaSAlan Cox outb(scb->tagmsg, host->addr + TUL_SFifo);
233972d39feaSAlan Cox outb(scb->tagid, host->addr + TUL_SFifo);
234072d39feaSAlan Cox for (i = 0; i < scb->cdblen; i++)
234172d39feaSAlan Cox outb(scb->cdb[i], host->addr + TUL_SFifo);
234272d39feaSAlan Cox host->active_tc = &host->targets[scb->target];
234372d39feaSAlan Cox host->active = scb;
234472d39feaSAlan Cox outb(TSC_SEL_ATN3, host->addr + TUL_SCmd);
23451da177e4SLinus Torvalds }
23461da177e4SLinus Torvalds
234772d39feaSAlan Cox /**
234872d39feaSAlan Cox * initio_bus_device_reset - SCSI Bus Device Reset
234972d39feaSAlan Cox * @host: InitIO host to reset
235072d39feaSAlan Cox *
235172d39feaSAlan Cox * Perform a device reset and abort all pending SCBs for the
235272d39feaSAlan Cox * victim device
235372d39feaSAlan Cox */
initio_bus_device_reset(struct initio_host * host)235472d39feaSAlan Cox int initio_bus_device_reset(struct initio_host * host)
23551da177e4SLinus Torvalds {
235672d39feaSAlan Cox struct scsi_ctrl_blk *scb = host->active;
235772d39feaSAlan Cox struct target_control *active_tc = host->active_tc;
235872d39feaSAlan Cox struct scsi_ctrl_blk *tmp, *prev;
235972d39feaSAlan Cox u8 tar;
23601da177e4SLinus Torvalds
236172d39feaSAlan Cox if (host->phase != MSG_OUT)
236272d39feaSAlan Cox return int_initio_bad_seq(host); /* Unexpected phase */
236372d39feaSAlan Cox
236472d39feaSAlan Cox initio_unlink_pend_scb(host, scb);
236572d39feaSAlan Cox initio_release_scb(host, scb);
23661da177e4SLinus Torvalds
23671da177e4SLinus Torvalds
236872d39feaSAlan Cox tar = scb->target; /* target */
236972d39feaSAlan Cox active_tc->flags &= ~(TCF_SYNC_DONE | TCF_WDTR_DONE | TCF_BUSY);
23701da177e4SLinus Torvalds /* clr sync. nego & WDTR flags 07/22/98 */
23711da177e4SLinus Torvalds
23721da177e4SLinus Torvalds /* abort all SCB with same target */
237372d39feaSAlan Cox prev = tmp = host->first_busy; /* Check Busy queue */
237472d39feaSAlan Cox while (tmp != NULL) {
237572d39feaSAlan Cox if (tmp->target == tar) {
23761da177e4SLinus Torvalds /* unlink it */
237772d39feaSAlan Cox if (tmp == host->first_busy) {
237872d39feaSAlan Cox if ((host->first_busy = tmp->next) == NULL)
237972d39feaSAlan Cox host->last_busy = NULL;
23801da177e4SLinus Torvalds } else {
238172d39feaSAlan Cox prev->next = tmp->next;
238272d39feaSAlan Cox if (tmp == host->last_busy)
238372d39feaSAlan Cox host->last_busy = prev;
23841da177e4SLinus Torvalds }
238572d39feaSAlan Cox tmp->hastat = HOST_ABORTED;
238672d39feaSAlan Cox initio_append_done_scb(host, tmp);
23871da177e4SLinus Torvalds }
23881da177e4SLinus Torvalds /* Previous haven't change */
23891da177e4SLinus Torvalds else {
239072d39feaSAlan Cox prev = tmp;
23911da177e4SLinus Torvalds }
239272d39feaSAlan Cox tmp = tmp->next;
23931da177e4SLinus Torvalds }
23949df17f46SHannes Reinecke outb(TARGET_RESET, host->addr + TUL_SFifo);
239572d39feaSAlan Cox outb(TSC_XF_FIFO_OUT, host->addr + TUL_SCmd);
239672d39feaSAlan Cox return initio_wait_disc(host);
23971da177e4SLinus Torvalds
23981da177e4SLinus Torvalds }
23991da177e4SLinus Torvalds
initio_msgin_accept(struct initio_host * host)240072d39feaSAlan Cox static int initio_msgin_accept(struct initio_host * host)
24011da177e4SLinus Torvalds {
240272d39feaSAlan Cox outb(TSC_MSG_ACCEPT, host->addr + TUL_SCmd);
240372d39feaSAlan Cox return wait_tulip(host);
24041da177e4SLinus Torvalds }
24051da177e4SLinus Torvalds
wait_tulip(struct initio_host * host)240672d39feaSAlan Cox static int wait_tulip(struct initio_host * host)
24071da177e4SLinus Torvalds {
24081da177e4SLinus Torvalds
240972d39feaSAlan Cox while (!((host->jsstatus0 = inb(host->addr + TUL_SStatus0))
241072d39feaSAlan Cox & TSS_INT_PENDING))
241172d39feaSAlan Cox cpu_relax();
24121da177e4SLinus Torvalds
241372d39feaSAlan Cox host->jsint = inb(host->addr + TUL_SInt);
241472d39feaSAlan Cox host->phase = host->jsstatus0 & TSS_PH_MASK;
241572d39feaSAlan Cox host->jsstatus1 = inb(host->addr + TUL_SStatus1);
24161da177e4SLinus Torvalds
241772d39feaSAlan Cox if (host->jsint & TSS_RESEL_INT) /* if SCSI bus reset detected */
241872d39feaSAlan Cox return int_initio_resel(host);
241972d39feaSAlan Cox if (host->jsint & TSS_SEL_TIMEOUT) /* if selected/reselected timeout interrupt */
242072d39feaSAlan Cox return int_initio_busfree(host);
242172d39feaSAlan Cox if (host->jsint & TSS_SCSIRST_INT) /* if SCSI bus reset detected */
242272d39feaSAlan Cox return int_initio_scsi_rst(host);
242372d39feaSAlan Cox
242472d39feaSAlan Cox if (host->jsint & TSS_DISC_INT) { /* BUS disconnection */
242572d39feaSAlan Cox if (host->flags & HCF_EXPECT_DONE_DISC) {
242672d39feaSAlan Cox outb(TSC_FLUSH_FIFO, host->addr + TUL_SCtrl0); /* Flush SCSI FIFO */
242772d39feaSAlan Cox initio_unlink_busy_scb(host, host->active);
242872d39feaSAlan Cox host->active->hastat = 0;
242972d39feaSAlan Cox initio_append_done_scb(host, host->active);
243072d39feaSAlan Cox host->active = NULL;
243172d39feaSAlan Cox host->active_tc = NULL;
243272d39feaSAlan Cox host->flags &= ~HCF_EXPECT_DONE_DISC;
243372d39feaSAlan Cox outb(TSC_INITDEFAULT, host->addr + TUL_SConfig);
243472d39feaSAlan Cox outb(TSC_HW_RESELECT, host->addr + TUL_SCtrl1); /* Enable HW reselect */
243572d39feaSAlan Cox return -1;
24361da177e4SLinus Torvalds }
243772d39feaSAlan Cox if (host->flags & HCF_EXPECT_DISC) {
243872d39feaSAlan Cox outb(TSC_FLUSH_FIFO, host->addr + TUL_SCtrl0); /* Flush SCSI FIFO */
243972d39feaSAlan Cox host->active = NULL;
244072d39feaSAlan Cox host->active_tc = NULL;
244172d39feaSAlan Cox host->flags &= ~HCF_EXPECT_DISC;
244272d39feaSAlan Cox outb(TSC_INITDEFAULT, host->addr + TUL_SConfig);
244372d39feaSAlan Cox outb(TSC_HW_RESELECT, host->addr + TUL_SCtrl1); /* Enable HW reselect */
244472d39feaSAlan Cox return -1;
24451da177e4SLinus Torvalds }
244672d39feaSAlan Cox return int_initio_busfree(host);
24471da177e4SLinus Torvalds }
244872d39feaSAlan Cox /* The old code really does the below. Can probably be removed */
244972d39feaSAlan Cox if (host->jsint & (TSS_FUNC_COMP | TSS_BUS_SERV))
245072d39feaSAlan Cox return host->phase;
245172d39feaSAlan Cox return host->phase;
24521da177e4SLinus Torvalds }
245372d39feaSAlan Cox
initio_wait_disc(struct initio_host * host)245472d39feaSAlan Cox static int initio_wait_disc(struct initio_host * host)
24551da177e4SLinus Torvalds {
245672d39feaSAlan Cox while (!((host->jsstatus0 = inb(host->addr + TUL_SStatus0)) & TSS_INT_PENDING))
245772d39feaSAlan Cox cpu_relax();
24581da177e4SLinus Torvalds
245972d39feaSAlan Cox host->jsint = inb(host->addr + TUL_SInt);
24601da177e4SLinus Torvalds
246172d39feaSAlan Cox if (host->jsint & TSS_SCSIRST_INT) /* if SCSI bus reset detected */
246272d39feaSAlan Cox return int_initio_scsi_rst(host);
246372d39feaSAlan Cox if (host->jsint & TSS_DISC_INT) { /* BUS disconnection */
246472d39feaSAlan Cox outb(TSC_FLUSH_FIFO, host->addr + TUL_SCtrl0); /* Flush SCSI FIFO */
246572d39feaSAlan Cox outb(TSC_INITDEFAULT, host->addr + TUL_SConfig);
246672d39feaSAlan Cox outb(TSC_HW_RESELECT, host->addr + TUL_SCtrl1); /* Enable HW reselect */
246772d39feaSAlan Cox host->active = NULL;
246872d39feaSAlan Cox return -1;
24691da177e4SLinus Torvalds }
247072d39feaSAlan Cox return initio_bad_seq(host);
24711da177e4SLinus Torvalds }
24721da177e4SLinus Torvalds
initio_wait_done_disc(struct initio_host * host)247372d39feaSAlan Cox static int initio_wait_done_disc(struct initio_host * host)
24741da177e4SLinus Torvalds {
247572d39feaSAlan Cox while (!((host->jsstatus0 = inb(host->addr + TUL_SStatus0))
247672d39feaSAlan Cox & TSS_INT_PENDING))
247772d39feaSAlan Cox cpu_relax();
24781da177e4SLinus Torvalds
247972d39feaSAlan Cox host->jsint = inb(host->addr + TUL_SInt);
24801da177e4SLinus Torvalds
248172d39feaSAlan Cox if (host->jsint & TSS_SCSIRST_INT) /* if SCSI bus reset detected */
248272d39feaSAlan Cox return int_initio_scsi_rst(host);
248372d39feaSAlan Cox if (host->jsint & TSS_DISC_INT) { /* BUS disconnection */
248472d39feaSAlan Cox outb(TSC_FLUSH_FIFO, host->addr + TUL_SCtrl0); /* Flush SCSI FIFO */
248572d39feaSAlan Cox outb(TSC_INITDEFAULT, host->addr + TUL_SConfig);
248672d39feaSAlan Cox outb(TSC_HW_RESELECT, host->addr + TUL_SCtrl1); /* Enable HW reselect */
248772d39feaSAlan Cox initio_unlink_busy_scb(host, host->active);
24881da177e4SLinus Torvalds
248972d39feaSAlan Cox initio_append_done_scb(host, host->active);
249072d39feaSAlan Cox host->active = NULL;
249172d39feaSAlan Cox return -1;
24921da177e4SLinus Torvalds }
249372d39feaSAlan Cox return initio_bad_seq(host);
249472d39feaSAlan Cox }
24951da177e4SLinus Torvalds
249672d39feaSAlan Cox /**
249772d39feaSAlan Cox * i91u_intr - IRQ handler
249872d39feaSAlan Cox * @irqno: IRQ number
249972d39feaSAlan Cox * @dev_id: IRQ identifier
250072d39feaSAlan Cox *
250172d39feaSAlan Cox * Take the relevant locks and then invoke the actual isr processing
250272d39feaSAlan Cox * code under the lock.
250372d39feaSAlan Cox */
25041da177e4SLinus Torvalds
i91u_intr(int irqno,void * dev_id)25057d12e780SDavid Howells static irqreturn_t i91u_intr(int irqno, void *dev_id)
25061da177e4SLinus Torvalds {
25071da177e4SLinus Torvalds struct Scsi_Host *dev = dev_id;
25081da177e4SLinus Torvalds unsigned long flags;
250972d39feaSAlan Cox int r;
25101da177e4SLinus Torvalds
25111da177e4SLinus Torvalds spin_lock_irqsave(dev->host_lock, flags);
251272d39feaSAlan Cox r = initio_isr((struct initio_host *)dev->hostdata);
25131da177e4SLinus Torvalds spin_unlock_irqrestore(dev->host_lock, flags);
251472d39feaSAlan Cox if (r)
25151da177e4SLinus Torvalds return IRQ_HANDLED;
251672d39feaSAlan Cox else
251772d39feaSAlan Cox return IRQ_NONE;
25181da177e4SLinus Torvalds }
25191da177e4SLinus Torvalds
25201da177e4SLinus Torvalds
252172d39feaSAlan Cox /**
252272d39feaSAlan Cox * initio_build_scb - Build the mappings and SCB
252372d39feaSAlan Cox * @host: InitIO host taking the command
252472d39feaSAlan Cox * @cblk: Firmware command block
252572d39feaSAlan Cox * @cmnd: SCSI midlayer command block
252672d39feaSAlan Cox *
252772d39feaSAlan Cox * Translate the abstract SCSI command into a firmware command block
252872d39feaSAlan Cox * suitable for feeding to the InitIO host controller. This also requires
252972d39feaSAlan Cox * we build the scatter gather lists and ensure they are mapped properly.
253072d39feaSAlan Cox */
25311da177e4SLinus Torvalds
initio_build_scb(struct initio_host * host,struct scsi_ctrl_blk * cblk,struct scsi_cmnd * cmnd)253272d39feaSAlan Cox static void initio_build_scb(struct initio_host * host, struct scsi_ctrl_blk * cblk, struct scsi_cmnd * cmnd)
25331da177e4SLinus Torvalds { /* Create corresponding SCB */
253472d39feaSAlan Cox struct scatterlist *sglist;
253572d39feaSAlan Cox struct sg_entry *sg; /* Pointer to SG list */
2536a258c85dSFUJITA Tomonori int i, nseg;
253772d39feaSAlan Cox long total_len;
25381da177e4SLinus Torvalds dma_addr_t dma_addr;
25391da177e4SLinus Torvalds
254072d39feaSAlan Cox /* Fill in the command headers */
254172d39feaSAlan Cox cblk->post = i91uSCBPost; /* i91u's callback routine */
254272d39feaSAlan Cox cblk->srb = cmnd;
254372d39feaSAlan Cox cblk->opcode = ExecSCSI;
254472d39feaSAlan Cox cblk->flags = SCF_POST; /* After SCSI done, call post routine */
254572d39feaSAlan Cox cblk->target = cmnd->device->id;
254672d39feaSAlan Cox cblk->lun = cmnd->device->lun;
254772d39feaSAlan Cox cblk->ident = cmnd->device->lun | DISC_ALLOW;
25481da177e4SLinus Torvalds
254972d39feaSAlan Cox cblk->flags |= SCF_SENSE; /* Turn on auto request sense */
255072d39feaSAlan Cox
255172d39feaSAlan Cox /* Map the sense buffer into bus memory */
255272d39feaSAlan Cox dma_addr = dma_map_single(&host->pci_dev->dev, cmnd->sense_buffer,
25531da177e4SLinus Torvalds SENSE_SIZE, DMA_FROM_DEVICE);
2554423eef6fSGrant Grundler cblk->senseptr = (u32)dma_addr;
2555423eef6fSGrant Grundler cblk->senselen = SENSE_SIZE;
255609cc102bSBart Van Assche initio_priv(cmnd)->sense_dma_addr = dma_addr;
255772d39feaSAlan Cox cblk->cdblen = cmnd->cmd_len;
25581da177e4SLinus Torvalds
255972d39feaSAlan Cox /* Clear the returned status */
256072d39feaSAlan Cox cblk->hastat = 0;
256172d39feaSAlan Cox cblk->tastat = 0;
256272d39feaSAlan Cox /* Command the command */
256364a87b24SBoaz Harrosh memcpy(cblk->cdb, cmnd->cmnd, cmnd->cmd_len);
25641da177e4SLinus Torvalds
256572d39feaSAlan Cox /* Set up tags */
256672d39feaSAlan Cox if (cmnd->device->tagged_supported) { /* Tag Support */
256772d39feaSAlan Cox cblk->tagmsg = SIMPLE_QUEUE_TAG; /* Do simple tag only */
25681da177e4SLinus Torvalds } else {
256972d39feaSAlan Cox cblk->tagmsg = 0; /* No tag support */
25701da177e4SLinus Torvalds }
257172d39feaSAlan Cox
25721da177e4SLinus Torvalds /* todo handle map_sg error */
2573a258c85dSFUJITA Tomonori nseg = scsi_dma_map(cmnd);
2574a258c85dSFUJITA Tomonori BUG_ON(nseg < 0);
2575a258c85dSFUJITA Tomonori if (nseg) {
257672d39feaSAlan Cox dma_addr = dma_map_single(&host->pci_dev->dev, &cblk->sglist[0],
257772d39feaSAlan Cox sizeof(struct sg_entry) * TOTAL_SG_ENTRY,
25781da177e4SLinus Torvalds DMA_BIDIRECTIONAL);
2579423eef6fSGrant Grundler cblk->bufptr = (u32)dma_addr;
258009cc102bSBart Van Assche initio_priv(cmnd)->sglist_dma_addr = dma_addr;
25811da177e4SLinus Torvalds
2582e2d435eaSStuart Swales cblk->sglen = nseg;
25831da177e4SLinus Torvalds
258472d39feaSAlan Cox cblk->flags |= SCF_SG; /* Turn on SG list flag */
2585a258c85dSFUJITA Tomonori total_len = 0;
2586a258c85dSFUJITA Tomonori sg = &cblk->sglist[0];
2587a258c85dSFUJITA Tomonori scsi_for_each_sg(cmnd, sglist, cblk->sglen, i) {
258872d39feaSAlan Cox sg->data = cpu_to_le32((u32)sg_dma_address(sglist));
2589423eef6fSGrant Grundler sg->len = cpu_to_le32((u32)sg_dma_len(sglist));
2590423eef6fSGrant Grundler total_len += sg_dma_len(sglist);
2591a169e637SBoaz Harrosh ++sg;
25921da177e4SLinus Torvalds }
25931da177e4SLinus Torvalds
2594a258c85dSFUJITA Tomonori cblk->buflen = (scsi_bufflen(cmnd) > total_len) ?
2595a258c85dSFUJITA Tomonori total_len : scsi_bufflen(cmnd);
259672d39feaSAlan Cox } else { /* No data transfer required */
259772d39feaSAlan Cox cblk->buflen = 0;
259872d39feaSAlan Cox cblk->sglen = 0;
25991da177e4SLinus Torvalds }
26001da177e4SLinus Torvalds }
26011da177e4SLinus Torvalds
260272d39feaSAlan Cox /**
2603100ec495SLee Jones * i91u_queuecommand_lck - Queue a new command if possible
260472d39feaSAlan Cox * @cmd: SCSI command block from the mid layer
260572d39feaSAlan Cox *
260672d39feaSAlan Cox * Attempts to queue a new command with the host adapter. Will return
260772d39feaSAlan Cox * zero if successful or indicate a host busy condition if not (which
260872d39feaSAlan Cox * will cause the mid layer to call us again later with the command)
260972d39feaSAlan Cox */
i91u_queuecommand_lck(struct scsi_cmnd * cmd)2610af049dfdSBart Van Assche static int i91u_queuecommand_lck(struct scsi_cmnd *cmd)
26111da177e4SLinus Torvalds {
261272d39feaSAlan Cox struct initio_host *host = (struct initio_host *) cmd->device->host->hostdata;
261372d39feaSAlan Cox struct scsi_ctrl_blk *cmnd;
26141da177e4SLinus Torvalds
261572d39feaSAlan Cox cmnd = initio_alloc_scb(host);
261672d39feaSAlan Cox if (!cmnd)
26171da177e4SLinus Torvalds return SCSI_MLQUEUE_HOST_BUSY;
26181da177e4SLinus Torvalds
261972d39feaSAlan Cox initio_build_scb(host, cmnd, cmd);
262072d39feaSAlan Cox initio_exec_scb(host, cmnd);
26211da177e4SLinus Torvalds return 0;
26221da177e4SLinus Torvalds }
26231da177e4SLinus Torvalds
DEF_SCSI_QCMD(i91u_queuecommand)2624f281233dSJeff Garzik static DEF_SCSI_QCMD(i91u_queuecommand)
2625f281233dSJeff Garzik
262672d39feaSAlan Cox /**
262772d39feaSAlan Cox * i91u_bus_reset - reset the SCSI bus
262872d39feaSAlan Cox * @cmnd: Command block we want to trigger the reset for
262972d39feaSAlan Cox *
263072d39feaSAlan Cox * Initiate a SCSI bus reset sequence
26311da177e4SLinus Torvalds */
263272d39feaSAlan Cox
263372d39feaSAlan Cox static int i91u_bus_reset(struct scsi_cmnd * cmnd)
26341da177e4SLinus Torvalds {
263572d39feaSAlan Cox struct initio_host *host;
26361da177e4SLinus Torvalds
263772d39feaSAlan Cox host = (struct initio_host *) cmnd->device->host->hostdata;
26381da177e4SLinus Torvalds
263972d39feaSAlan Cox spin_lock_irq(cmnd->device->host->host_lock);
264072d39feaSAlan Cox initio_reset_scsi(host, 0);
264172d39feaSAlan Cox spin_unlock_irq(cmnd->device->host->host_lock);
264268b3aa7cSJeff Garzik
26431da177e4SLinus Torvalds return SUCCESS;
26441da177e4SLinus Torvalds }
26451da177e4SLinus Torvalds
264672d39feaSAlan Cox /**
2647100ec495SLee Jones * i91u_biosparam - return the "logical geometry
264872d39feaSAlan Cox * @sdev: SCSI device
2649100ec495SLee Jones * @dev: Matching block device
265072d39feaSAlan Cox * @capacity: Sector size of drive
265172d39feaSAlan Cox * @info_array: Return space for BIOS geometry
265272d39feaSAlan Cox *
265372d39feaSAlan Cox * Map the device geometry in a manner compatible with the host
265472d39feaSAlan Cox * controller BIOS behaviour.
265572d39feaSAlan Cox *
265672d39feaSAlan Cox * FIXME: limited to 2^32 sector devices.
26571da177e4SLinus Torvalds */
265872d39feaSAlan Cox
i91u_biosparam(struct scsi_device * sdev,struct block_device * dev,sector_t capacity,int * info_array)26591da177e4SLinus Torvalds static int i91u_biosparam(struct scsi_device *sdev, struct block_device *dev,
26601da177e4SLinus Torvalds sector_t capacity, int *info_array)
26611da177e4SLinus Torvalds {
266272d39feaSAlan Cox struct initio_host *host; /* Point to Host adapter control block */
266372d39feaSAlan Cox struct target_control *tc;
26641da177e4SLinus Torvalds
266572d39feaSAlan Cox host = (struct initio_host *) sdev->host->hostdata;
266672d39feaSAlan Cox tc = &host->targets[sdev->id];
26671da177e4SLinus Torvalds
266872d39feaSAlan Cox if (tc->heads) {
266972d39feaSAlan Cox info_array[0] = tc->heads;
267072d39feaSAlan Cox info_array[1] = tc->sectors;
267172d39feaSAlan Cox info_array[2] = (unsigned long)capacity / tc->heads / tc->sectors;
26721da177e4SLinus Torvalds } else {
267372d39feaSAlan Cox if (tc->drv_flags & TCF_DRV_255_63) {
26741da177e4SLinus Torvalds info_array[0] = 255;
26751da177e4SLinus Torvalds info_array[1] = 63;
26761da177e4SLinus Torvalds info_array[2] = (unsigned long)capacity / 255 / 63;
26771da177e4SLinus Torvalds } else {
26781da177e4SLinus Torvalds info_array[0] = 64;
26791da177e4SLinus Torvalds info_array[1] = 32;
26801da177e4SLinus Torvalds info_array[2] = (unsigned long)capacity >> 11;
26811da177e4SLinus Torvalds }
26821da177e4SLinus Torvalds }
26831da177e4SLinus Torvalds
26841da177e4SLinus Torvalds #if defined(DEBUG_BIOSPARAM)
26851da177e4SLinus Torvalds if (i91u_debug & debug_biosparam) {
26861da177e4SLinus Torvalds printk("bios geometry: head=%d, sec=%d, cyl=%d\n",
26871da177e4SLinus Torvalds info_array[0], info_array[1], info_array[2]);
26881da177e4SLinus Torvalds printk("WARNING: check, if the bios geometry is correct.\n");
26891da177e4SLinus Torvalds }
26901da177e4SLinus Torvalds #endif
26911da177e4SLinus Torvalds
26921da177e4SLinus Torvalds return 0;
26931da177e4SLinus Torvalds }
26941da177e4SLinus Torvalds
269572d39feaSAlan Cox /**
269672d39feaSAlan Cox * i91u_unmap_scb - Unmap a command
269772d39feaSAlan Cox * @pci_dev: PCI device the command is for
269872d39feaSAlan Cox * @cmnd: The command itself
269972d39feaSAlan Cox *
270072d39feaSAlan Cox * Unmap any PCI mapping/IOMMU resources allocated when the command
270172d39feaSAlan Cox * was mapped originally as part of initio_build_scb
270272d39feaSAlan Cox */
270372d39feaSAlan Cox
i91u_unmap_scb(struct pci_dev * pci_dev,struct scsi_cmnd * cmnd)270472d39feaSAlan Cox static void i91u_unmap_scb(struct pci_dev *pci_dev, struct scsi_cmnd *cmnd)
27051da177e4SLinus Torvalds {
27061da177e4SLinus Torvalds /* auto sense buffer */
270709cc102bSBart Van Assche if (initio_priv(cmnd)->sense_dma_addr) {
27081da177e4SLinus Torvalds dma_unmap_single(&pci_dev->dev,
270909cc102bSBart Van Assche initio_priv(cmnd)->sense_dma_addr,
27101da177e4SLinus Torvalds SENSE_SIZE, DMA_FROM_DEVICE);
271109cc102bSBart Van Assche initio_priv(cmnd)->sense_dma_addr = 0;
27121da177e4SLinus Torvalds }
27131da177e4SLinus Torvalds
27141da177e4SLinus Torvalds /* request buffer */
2715a258c85dSFUJITA Tomonori if (scsi_sg_count(cmnd)) {
271609cc102bSBart Van Assche dma_unmap_single(&pci_dev->dev,
271709cc102bSBart Van Assche initio_priv(cmnd)->sglist_dma_addr,
271872d39feaSAlan Cox sizeof(struct sg_entry) * TOTAL_SG_ENTRY,
27191da177e4SLinus Torvalds DMA_BIDIRECTIONAL);
27201da177e4SLinus Torvalds
2721a258c85dSFUJITA Tomonori scsi_dma_unmap(cmnd);
27221da177e4SLinus Torvalds }
27231da177e4SLinus Torvalds }
27241da177e4SLinus Torvalds
2725100ec495SLee Jones /*
272672d39feaSAlan Cox * i91uSCBPost - SCSI callback
272772d39feaSAlan Cox *
272872d39feaSAlan Cox * This is callback routine be called when tulip finish one
272972d39feaSAlan Cox * SCSI command.
273072d39feaSAlan Cox */
273172d39feaSAlan Cox
i91uSCBPost(u8 * host_mem,u8 * cblk_mem)273272d39feaSAlan Cox static void i91uSCBPost(u8 * host_mem, u8 * cblk_mem)
27331da177e4SLinus Torvalds {
273472d39feaSAlan Cox struct scsi_cmnd *cmnd; /* Pointer to SCSI request block */
273572d39feaSAlan Cox struct initio_host *host;
273672d39feaSAlan Cox struct scsi_ctrl_blk *cblk;
27371da177e4SLinus Torvalds
273872d39feaSAlan Cox host = (struct initio_host *) host_mem;
273972d39feaSAlan Cox cblk = (struct scsi_ctrl_blk *) cblk_mem;
274072d39feaSAlan Cox if ((cmnd = cblk->srb) == NULL) {
274172d39feaSAlan Cox printk(KERN_ERR "i91uSCBPost: SRB pointer is empty\n");
274272d39feaSAlan Cox WARN_ON(1);
274372d39feaSAlan Cox initio_release_scb(host, cblk); /* Release SCB for current channel */
27441da177e4SLinus Torvalds return;
27451da177e4SLinus Torvalds }
274672d39feaSAlan Cox
274772d39feaSAlan Cox /*
274872d39feaSAlan Cox * Remap the firmware error status into a mid layer one
274972d39feaSAlan Cox */
275072d39feaSAlan Cox switch (cblk->hastat) {
27511da177e4SLinus Torvalds case 0x0:
27521da177e4SLinus Torvalds case 0xa: /* Linked command complete without error and linked normally */
27531da177e4SLinus Torvalds case 0xb: /* Linked command complete without error interrupt generated */
275472d39feaSAlan Cox cblk->hastat = 0;
27551da177e4SLinus Torvalds break;
27561da177e4SLinus Torvalds
27571da177e4SLinus Torvalds case 0x11: /* Selection time out-The initiator selection or target
27581da177e4SLinus Torvalds reselection was not complete within the SCSI Time out period */
275972d39feaSAlan Cox cblk->hastat = DID_TIME_OUT;
27601da177e4SLinus Torvalds break;
27611da177e4SLinus Torvalds
27621da177e4SLinus Torvalds case 0x14: /* Target bus phase sequence failure-An invalid bus phase or bus
27631da177e4SLinus Torvalds phase sequence was requested by the target. The host adapter
27641da177e4SLinus Torvalds will generate a SCSI Reset Condition, notifying the host with
27651da177e4SLinus Torvalds a SCRD interrupt */
276672d39feaSAlan Cox cblk->hastat = DID_RESET;
27671da177e4SLinus Torvalds break;
27681da177e4SLinus Torvalds
27691da177e4SLinus Torvalds case 0x1a: /* SCB Aborted. 07/21/98 */
277072d39feaSAlan Cox cblk->hastat = DID_ABORT;
27711da177e4SLinus Torvalds break;
27721da177e4SLinus Torvalds
27731da177e4SLinus Torvalds case 0x12: /* Data overrun/underrun-The target attempted to transfer more data
27741da177e4SLinus Torvalds than was allocated by the Data Length field or the sum of the
27751da177e4SLinus Torvalds Scatter / Gather Data Length fields. */
27761da177e4SLinus Torvalds case 0x13: /* Unexpected bus free-The target dropped the SCSI BSY at an unexpected time. */
27771da177e4SLinus Torvalds case 0x16: /* Invalid SCB Operation Code. */
27781da177e4SLinus Torvalds
27791da177e4SLinus Torvalds default:
278072d39feaSAlan Cox printk("ini9100u: %x %x\n", cblk->hastat, cblk->tastat);
278172d39feaSAlan Cox cblk->hastat = DID_ERROR; /* Couldn't find any better */
27821da177e4SLinus Torvalds break;
27831da177e4SLinus Torvalds }
27841da177e4SLinus Torvalds
278572d39feaSAlan Cox cmnd->result = cblk->tastat | (cblk->hastat << 16);
278672d39feaSAlan Cox i91u_unmap_scb(host->pci_dev, cmnd);
278725e1d896SBart Van Assche scsi_done(cmnd); /* Notify system DONE */
278872d39feaSAlan Cox initio_release_scb(host, cblk); /* Release SCB for current channel */
27891da177e4SLinus Torvalds }
27901da177e4SLinus Torvalds
2791*4ba116afSBart Van Assche static const struct scsi_host_template initio_template = {
27921da177e4SLinus Torvalds .proc_name = "INI9100U",
279372d39feaSAlan Cox .name = "Initio INI-9X00U/UW SCSI device driver",
27941da177e4SLinus Torvalds .queuecommand = i91u_queuecommand,
27951da177e4SLinus Torvalds .eh_bus_reset_handler = i91u_bus_reset,
27961da177e4SLinus Torvalds .bios_param = i91u_biosparam,
279772d39feaSAlan Cox .can_queue = MAX_TARGETS * i91u_MAXQUEUE,
27981da177e4SLinus Torvalds .this_id = 1,
27991da177e4SLinus Torvalds .sg_tablesize = SG_ALL,
280009cc102bSBart Van Assche .cmd_size = sizeof(struct initio_cmd_priv),
28011da177e4SLinus Torvalds };
28021da177e4SLinus Torvalds
initio_probe_one(struct pci_dev * pdev,const struct pci_device_id * id)280372d39feaSAlan Cox static int initio_probe_one(struct pci_dev *pdev,
280472d39feaSAlan Cox const struct pci_device_id *id)
280572d39feaSAlan Cox {
280672d39feaSAlan Cox struct Scsi_Host *shost;
280772d39feaSAlan Cox struct initio_host *host;
280872d39feaSAlan Cox u32 reg;
280972d39feaSAlan Cox u16 bios_seg;
281072d39feaSAlan Cox struct scsi_ctrl_blk *scb, *tmp, *prev = NULL /* silence gcc */;
281172d39feaSAlan Cox int num_scb, i, error;
281272d39feaSAlan Cox
281372d39feaSAlan Cox error = pci_enable_device(pdev);
281472d39feaSAlan Cox if (error)
281572d39feaSAlan Cox return error;
281672d39feaSAlan Cox
281772d39feaSAlan Cox pci_read_config_dword(pdev, 0x44, (u32 *) & reg);
281872d39feaSAlan Cox bios_seg = (u16) (reg & 0xFF);
281972d39feaSAlan Cox if (((reg & 0xFF00) >> 8) == 0xFF)
282072d39feaSAlan Cox reg = 0;
282172d39feaSAlan Cox bios_seg = (bios_seg << 8) + ((u16) ((reg & 0xFF00) >> 8));
282272d39feaSAlan Cox
2823663b4117SChristoph Hellwig if (dma_set_mask(&pdev->dev, DMA_BIT_MASK(32))) {
282472d39feaSAlan Cox printk(KERN_WARNING "i91u: Could not set 32 bit DMA mask\n");
282572d39feaSAlan Cox error = -ENODEV;
282672d39feaSAlan Cox goto out_disable_device;
282772d39feaSAlan Cox }
282872d39feaSAlan Cox shost = scsi_host_alloc(&initio_template, sizeof(struct initio_host));
282972d39feaSAlan Cox if (!shost) {
283072d39feaSAlan Cox printk(KERN_WARNING "initio: Could not allocate host structure.\n");
283172d39feaSAlan Cox error = -ENOMEM;
283272d39feaSAlan Cox goto out_disable_device;
283372d39feaSAlan Cox }
283472d39feaSAlan Cox host = (struct initio_host *)shost->hostdata;
283572d39feaSAlan Cox memset(host, 0, sizeof(struct initio_host));
283699f1f534SAlan Cox host->addr = pci_resource_start(pdev, 0);
2837e2d435eaSStuart Swales host->bios_addr = bios_seg;
283872d39feaSAlan Cox
283972d39feaSAlan Cox if (!request_region(host->addr, 256, "i91u")) {
284072d39feaSAlan Cox printk(KERN_WARNING "initio: I/O port range 0x%x is busy.\n", host->addr);
284172d39feaSAlan Cox error = -ENODEV;
284272d39feaSAlan Cox goto out_host_put;
284372d39feaSAlan Cox }
284472d39feaSAlan Cox
284572d39feaSAlan Cox if (initio_tag_enable) /* 1.01i */
284672d39feaSAlan Cox num_scb = MAX_TARGETS * i91u_MAXQUEUE;
284772d39feaSAlan Cox else
284872d39feaSAlan Cox num_scb = MAX_TARGETS + 3; /* 1-tape, 1-CD_ROM, 1- extra */
284972d39feaSAlan Cox
285072d39feaSAlan Cox for (; num_scb >= MAX_TARGETS + 3; num_scb--) {
285172d39feaSAlan Cox i = num_scb * sizeof(struct scsi_ctrl_blk);
2852c981e9e0SChristoph Hellwig scb = kzalloc(i, GFP_KERNEL);
2853c981e9e0SChristoph Hellwig if (scb)
285472d39feaSAlan Cox break;
285572d39feaSAlan Cox }
285672d39feaSAlan Cox
285772d39feaSAlan Cox if (!scb) {
285872d39feaSAlan Cox printk(KERN_WARNING "initio: Cannot allocate SCB array.\n");
285972d39feaSAlan Cox error = -ENOMEM;
286072d39feaSAlan Cox goto out_release_region;
286172d39feaSAlan Cox }
286272d39feaSAlan Cox
2863e9e42fafSAlan Cox host->pci_dev = pdev;
2864e9e42fafSAlan Cox
2865e2d435eaSStuart Swales host->semaph = 1;
2866e2d435eaSStuart Swales spin_lock_init(&host->semaph_lock);
286772d39feaSAlan Cox host->num_scbs = num_scb;
286872d39feaSAlan Cox host->scb = scb;
286972d39feaSAlan Cox host->next_pending = scb;
287072d39feaSAlan Cox host->next_avail = scb;
287172d39feaSAlan Cox for (i = 0, tmp = scb; i < num_scb; i++, tmp++) {
287272d39feaSAlan Cox tmp->tagid = i;
287372d39feaSAlan Cox if (i != 0)
287472d39feaSAlan Cox prev->next = tmp;
287572d39feaSAlan Cox prev = tmp;
287672d39feaSAlan Cox }
287772d39feaSAlan Cox prev->next = NULL;
287872d39feaSAlan Cox host->scb_end = tmp;
287972d39feaSAlan Cox host->first_avail = scb;
288072d39feaSAlan Cox host->last_avail = prev;
2881e9e42fafSAlan Cox spin_lock_init(&host->avail_lock);
288272d39feaSAlan Cox
2883e2d435eaSStuart Swales initio_init(host, phys_to_virt(((u32)bios_seg << 4)));
288472d39feaSAlan Cox
288572d39feaSAlan Cox host->jsstatus0 = 0;
288672d39feaSAlan Cox
288772d39feaSAlan Cox shost->io_port = host->addr;
288872d39feaSAlan Cox shost->n_io_port = 0xff;
288972d39feaSAlan Cox shost->can_queue = num_scb; /* 03/05/98 */
289072d39feaSAlan Cox shost->unique_id = host->addr;
289172d39feaSAlan Cox shost->max_id = host->max_tar;
289272d39feaSAlan Cox shost->max_lun = 32; /* 10/21/97 */
289372d39feaSAlan Cox shost->irq = pdev->irq;
289472d39feaSAlan Cox shost->this_id = host->scsi_id; /* Assign HCS index */
289572d39feaSAlan Cox shost->base = host->addr;
289672d39feaSAlan Cox shost->sg_tablesize = TOTAL_SG_ENTRY;
289772d39feaSAlan Cox
28984909cc2bSMichael Opdenacker error = request_irq(pdev->irq, i91u_intr, IRQF_SHARED, "i91u", shost);
289972d39feaSAlan Cox if (error < 0) {
290072d39feaSAlan Cox printk(KERN_WARNING "initio: Unable to request IRQ %d\n", pdev->irq);
290172d39feaSAlan Cox goto out_free_scbs;
290272d39feaSAlan Cox }
290372d39feaSAlan Cox
290472d39feaSAlan Cox pci_set_drvdata(pdev, shost);
290572d39feaSAlan Cox
290672d39feaSAlan Cox error = scsi_add_host(shost, &pdev->dev);
290772d39feaSAlan Cox if (error)
290872d39feaSAlan Cox goto out_free_irq;
290972d39feaSAlan Cox scsi_scan_host(shost);
291072d39feaSAlan Cox return 0;
291172d39feaSAlan Cox out_free_irq:
291272d39feaSAlan Cox free_irq(pdev->irq, shost);
291372d39feaSAlan Cox out_free_scbs:
291472d39feaSAlan Cox kfree(host->scb);
291572d39feaSAlan Cox out_release_region:
291672d39feaSAlan Cox release_region(host->addr, 256);
291772d39feaSAlan Cox out_host_put:
291872d39feaSAlan Cox scsi_host_put(shost);
291972d39feaSAlan Cox out_disable_device:
292072d39feaSAlan Cox pci_disable_device(pdev);
292172d39feaSAlan Cox return error;
292272d39feaSAlan Cox }
292372d39feaSAlan Cox
292472d39feaSAlan Cox /**
292572d39feaSAlan Cox * initio_remove_one - control shutdown
292672d39feaSAlan Cox * @pdev: PCI device being released
292772d39feaSAlan Cox *
292872d39feaSAlan Cox * Release the resources assigned to this adapter after it has
292972d39feaSAlan Cox * finished being used.
293072d39feaSAlan Cox */
293172d39feaSAlan Cox
initio_remove_one(struct pci_dev * pdev)293272d39feaSAlan Cox static void initio_remove_one(struct pci_dev *pdev)
293372d39feaSAlan Cox {
293472d39feaSAlan Cox struct Scsi_Host *host = pci_get_drvdata(pdev);
293572d39feaSAlan Cox struct initio_host *s = (struct initio_host *)host->hostdata;
293672d39feaSAlan Cox scsi_remove_host(host);
293772d39feaSAlan Cox free_irq(pdev->irq, host);
293872d39feaSAlan Cox release_region(s->addr, 256);
293972d39feaSAlan Cox scsi_host_put(host);
294072d39feaSAlan Cox pci_disable_device(pdev);
294172d39feaSAlan Cox }
294272d39feaSAlan Cox
294372d39feaSAlan Cox MODULE_LICENSE("GPL");
294472d39feaSAlan Cox
294572d39feaSAlan Cox static struct pci_device_id initio_pci_tbl[] = {
294672d39feaSAlan Cox {PCI_VENDOR_ID_INIT, 0x9500, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
294772d39feaSAlan Cox {PCI_VENDOR_ID_INIT, 0x9400, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
294872d39feaSAlan Cox {PCI_VENDOR_ID_INIT, 0x9401, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
294972d39feaSAlan Cox {PCI_VENDOR_ID_INIT, 0x0002, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
295072d39feaSAlan Cox {PCI_VENDOR_ID_DOMEX, 0x0002, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
295172d39feaSAlan Cox {0,}
295272d39feaSAlan Cox };
295372d39feaSAlan Cox MODULE_DEVICE_TABLE(pci, initio_pci_tbl);
295472d39feaSAlan Cox
295572d39feaSAlan Cox static struct pci_driver initio_pci_driver = {
295672d39feaSAlan Cox .name = "initio",
295772d39feaSAlan Cox .id_table = initio_pci_tbl,
295872d39feaSAlan Cox .probe = initio_probe_one,
29596f039790SGreg Kroah-Hartman .remove = initio_remove_one,
296072d39feaSAlan Cox };
2961ca57b069SLiu Shixin module_pci_driver(initio_pci_driver);
296272d39feaSAlan Cox
296372d39feaSAlan Cox MODULE_DESCRIPTION("Initio INI-9X00U/UW SCSI device driver");
296472d39feaSAlan Cox MODULE_AUTHOR("Initio Corporation");
296572d39feaSAlan Cox MODULE_LICENSE("GPL");
2966