| /************************************************************************** |
| * Initio 9100 device driver for Linux. |
| * |
| * Copyright (c) 1994-1998 Initio Corporation |
| * Copyright (c) 1998 Bas Vermeulen <bvermeul@blackstar.xs4all.nl> |
| * All rights reserved. |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; either version 2, or (at your option) |
| * any later version. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; see the file COPYING. If not, write to |
| * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. |
| * |
| * -------------------------------------------------------------------------- |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions, and the following disclaimer, |
| * without modification, immediately at the beginning of the file. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * 3. The name of the author may not be used to endorse or promote products |
| * derived from this software without specific prior written permission. |
| * |
| * Where this Software is combined with software released under the terms of |
| * the GNU General Public License ("GPL") and the terms of the GPL would require the |
| * combined work to also be released under the terms of the GPL, the terms |
| * and conditions of this License will apply in addition to those of the |
| * GPL with the exception of any terms or conditions of this License that |
| * conflict with, or are expressly prohibited by, the GPL. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND |
| * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR |
| * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| * SUCH DAMAGE. |
| * |
| ************************************************************************* |
| * |
| * DESCRIPTION: |
| * |
| * This is the Linux low-level SCSI driver for Initio INI-9X00U/UW SCSI host |
| * adapters |
| * |
| * 08/06/97 hc - v1.01h |
| * - Support inic-940 and inic-935 |
| * 09/26/97 hc - v1.01i |
| * - Make correction from J.W. Schultz suggestion |
| * 10/13/97 hc - Support reset function |
| * 10/21/97 hc - v1.01j |
| * - Support 32 LUN (SCSI 3) |
| * 01/14/98 hc - v1.01k |
| * - Fix memory allocation problem |
| * 03/04/98 hc - v1.01l |
| * - Fix tape rewind which will hang the system problem |
| * - Set can_queue to tul_num_scb |
| * 06/25/98 hc - v1.01m |
| * - Get it work for kernel version >= 2.1.75 |
| * - Dynamic assign SCSI bus reset holding time in init_tulip() |
| * 07/02/98 hc - v1.01n |
| * - Support 0002134A |
| * 08/07/98 hc - v1.01o |
| * - Change the tul_abort_srb routine to use scsi_done. <01> |
| * 09/07/98 hl - v1.02 |
| * - Change the INI9100U define and proc_dir_entry to |
| * reflect the newer Kernel 2.1.118, but the v1.o1o |
| * should work with Kernel 2.1.118. |
| * 09/20/98 wh - v1.02a |
| * - Support Abort command. |
| * - Handle reset routine. |
| * 09/21/98 hl - v1.03 |
| * - remove comments. |
| * 12/09/98 bv - v1.03a |
| * - Removed unused code |
| * 12/13/98 bv - v1.03b |
| * - Remove cli() locking for kernels >= 2.1.95. This uses |
| * spinlocks to serialize access to the pSRB_head and |
| * pSRB_tail members of the HCS structure. |
| * 09/01/99 bv - v1.03d |
| * - Fixed a deadlock problem in SMP. |
| * 21/01/99 bv - v1.03e |
| * - Add support for the Domex 3192U PCI SCSI |
| * This is a slightly modified patch by |
| * Brian Macy <bmacy@sunshinecomputing.com> |
| * 22/02/99 bv - v1.03f |
| * - Didn't detect the INIC-950 in 2.0.x correctly. |
| * Now fixed. |
| * 05/07/99 bv - v1.03g |
| * - Changed the assumption that HZ = 100 |
| **************************************************************************/ |
| |
| #define CVT_LINUX_VERSION(V,P,S) (V * 65536 + P * 256 + S) |
| |
| #ifndef LINUX_VERSION_CODE |
| #include <linux/version.h> |
| #endif |
| |
| #include <linux/module.h> |
| |
| #include <stdarg.h> |
| #include <asm/irq.h> |
| #include <linux/errno.h> |
| #include <linux/delay.h> |
| #include <linux/pci.h> |
| #include <linux/init.h> |
| #include <linux/blk.h> |
| #include <linux/spinlock.h> |
| #include <linux/stat.h> |
| #include <linux/config.h> |
| |
| #include <linux/kernel.h> |
| #include <linux/string.h> |
| #include <linux/ioport.h> |
| #include <linux/sched.h> |
| #include <linux/proc_fs.h> |
| #include <asm/io.h> |
| #include "scsi.h" |
| #include "sd.h" |
| #include "hosts.h" |
| #include <linux/slab.h> |
| #include "ini9100u.h" |
| |
| #ifdef DEBUG_i91u |
| unsigned int i91u_debug = DEBUG_DEFAULT; |
| #endif |
| |
| static Scsi_Host_Template driver_template = INI9100U; |
| #include "scsi_module.c" |
| |
| char *i91uCopyright = "Copyright (C) 1996-98"; |
| char *i91uInitioName = "by Initio Corporation"; |
| char *i91uProductName = "INI-9X00U/UW"; |
| char *i91uVersion = "v1.03g"; |
| |
| #define TULSZ(sz) (sizeof(sz) / sizeof(sz[0])) |
| #define TUL_RDWORD(x,y) (short)(inl((int)((ULONG)((ULONG)x+(UCHAR)y)) )) |
| |
| /* set by i91_setup according to the command line */ |
| static int setup_called = 0; |
| |
| static int tul_num_ch = 4; /* Maximum 4 adapters */ |
| static int tul_num_scb; |
| static int tul_tag_enable = 1; |
| static SCB *tul_scb; |
| |
| #ifdef DEBUG_i91u |
| static int setup_debug = 0; |
| #endif |
| |
| static char *setup_str = (char *) NULL; |
| |
| static void i91u_intr0(int irq, void *dev_id, struct pt_regs *); |
| static void i91u_intr1(int irq, void *dev_id, struct pt_regs *); |
| static void i91u_intr2(int irq, void *dev_id, struct pt_regs *); |
| static void i91u_intr3(int irq, void *dev_id, struct pt_regs *); |
| static void i91u_intr4(int irq, void *dev_id, struct pt_regs *); |
| static void i91u_intr5(int irq, void *dev_id, struct pt_regs *); |
| static void i91u_intr6(int irq, void *dev_id, struct pt_regs *); |
| static void i91u_intr7(int irq, void *dev_id, struct pt_regs *); |
| |
| static void i91u_panic(char *msg); |
| |
| static void i91uSCBPost(BYTE * pHcb, BYTE * pScb); |
| |
| /* ---- EXTERNAL FUNCTIONS ---- */ |
| /* Get total number of adapters */ |
| extern void init_i91uAdapter_table(void); |
| extern int Addi91u_into_Adapter_table(WORD, WORD, BYTE, BYTE, BYTE); |
| extern int tul_ReturnNumberOfAdapters(void); |
| extern void get_tulipPCIConfig(HCS * pHCB, int iChannel_index); |
| extern int init_tulip(HCS * pHCB, SCB * pSCB, int tul_num_scb, BYTE * pbBiosAdr, int reset_time); |
| extern SCB *tul_alloc_scb(HCS * pHCB); |
| extern int tul_abort_srb(HCS * pHCB, Scsi_Cmnd * pSRB); |
| extern void tul_exec_scb(HCS * pHCB, SCB * pSCB); |
| extern void tul_release_scb(HCS * pHCB, SCB * pSCB); |
| extern void tul_stop_bm(HCS * pHCB); |
| extern int tul_reset_scsi(HCS * pCurHcb, int seconds); |
| extern int tul_isr(HCS * pHCB); |
| extern int tul_reset(HCS * pHCB, Scsi_Cmnd * pSRB, unsigned char target); |
| extern int tul_reset_scsi_bus(HCS * pCurHcb); |
| extern int tul_device_reset(HCS * pCurHcb, ULONG pSrb, unsigned int target, unsigned int ResetFlags); |
| /* ---- EXTERNAL VARIABLES ---- */ |
| extern HCS tul_hcs[]; |
| |
| const PCI_ID i91u_pci_devices[] = { |
| { INI_VENDOR_ID, I950_DEVICE_ID }, |
| { INI_VENDOR_ID, I940_DEVICE_ID }, |
| { INI_VENDOR_ID, I935_DEVICE_ID }, |
| { INI_VENDOR_ID, I920_DEVICE_ID }, |
| { DMX_VENDOR_ID, I920_DEVICE_ID }, |
| }; |
| |
| /* |
| * queue services: |
| */ |
| /***************************************************************************** |
| Function name : i91uAppendSRBToQueue |
| Description : This function will push current request into save list |
| Input : pSRB - Pointer to SCSI request block. |
| pHCB - Pointer to host adapter structure |
| Output : None. |
| Return : None. |
| *****************************************************************************/ |
| static void i91uAppendSRBToQueue(HCS * pHCB, Scsi_Cmnd * pSRB) |
| { |
| ULONG flags; |
| spin_lock_irqsave(&(pHCB->pSRB_lock), flags); |
| |
| pSRB->next = NULL; /* Pointer to next */ |
| |
| if (pHCB->pSRB_head == NULL) |
| pHCB->pSRB_head = pSRB; |
| else |
| pHCB->pSRB_tail->next = pSRB; /* Pointer to next */ |
| pHCB->pSRB_tail = pSRB; |
| |
| spin_unlock_irqrestore(&(pHCB->pSRB_lock), flags); |
| return; |
| } |
| |
| /***************************************************************************** |
| Function name : i91uPopSRBFromQueue |
| Description : This function will pop current request from save list |
| Input : pHCB - Pointer to host adapter structure |
| Output : None. |
| Return : pSRB - Pointer to SCSI request block. |
| *****************************************************************************/ |
| static Scsi_Cmnd *i91uPopSRBFromQueue(HCS * pHCB) |
| { |
| Scsi_Cmnd *pSRB; |
| ULONG flags; |
| |
| spin_lock_irqsave(&(pHCB->pSRB_lock), flags); |
| |
| if ((pSRB = pHCB->pSRB_head) != NULL) { |
| pHCB->pSRB_head = pHCB->pSRB_head->next; |
| pSRB->next = NULL; |
| } |
| spin_unlock_irqrestore(&(pHCB->pSRB_lock), flags); |
| |
| return (pSRB); |
| } |
| |
| /* called from init/main.c */ |
| |
| void i91u_setup(char *str, int *ints) |
| { |
| if (setup_called) |
| i91u_panic("i91u: i91u_setup called twice.\n"); |
| |
| setup_called = ints[0]; |
| setup_str = str; |
| |
| #ifdef DEBUG_i91u |
| setup_debug = ints[0] >= 1 ? ints[1] : DEBUG_DEFAULT; |
| #endif |
| } |
| |
| int tul_NewReturnNumberOfAdapters(void) |
| { |
| struct pci_dev *pDev = NULL; /* Start from none */ |
| int iAdapters = 0; |
| long dRegValue; |
| WORD wBIOS; |
| int i = 0; |
| |
| init_i91uAdapter_table(); |
| |
| for (i = 0; i < TULSZ(i91u_pci_devices); i++) |
| { |
| while ((pDev = pci_find_device(i91u_pci_devices[i].vendor_id, i91u_pci_devices[i].device_id, pDev)) != NULL) { |
| if (pci_enable_device(pDev)) |
| continue; |
| pci_read_config_dword(pDev, 0x44, (u32 *) & dRegValue); |
| wBIOS = (UWORD) (dRegValue & 0xFF); |
| if (((dRegValue & 0xFF00) >> 8) == 0xFF) |
| dRegValue = 0; |
| wBIOS = (wBIOS << 8) + ((UWORD) ((dRegValue & 0xFF00) >> 8)); |
| if (Addi91u_into_Adapter_table(wBIOS, |
| (pDev->resource[0].start), |
| pDev->irq, |
| pDev->bus->number, |
| (pDev->devfn >> 3) |
| ) == 0) |
| iAdapters++; |
| } |
| } |
| |
| return (iAdapters); |
| } |
| |
| int i91u_detect(Scsi_Host_Template * tpnt) |
| { |
| SCB *pSCB; |
| HCS *pHCB; |
| struct Scsi_Host *hreg; |
| unsigned long i; /* 01/14/98 */ |
| int ok = 0, iAdapters; |
| ULONG dBiosAdr; |
| BYTE *pbBiosAdr; |
| |
| tpnt->proc_name = "INI9100U"; |
| |
| if (setup_called) { /* Setup by i91u_setup */ |
| printk("i91u: processing commandline: "); |
| |
| #ifdef DEBUG_i91u |
| if (setup_called > 1) { |
| printk("\ni91u: %s\n", setup_str); |
| printk("i91u: usage: i91u[=<DEBUG>]\n"); |
| i91u_panic("i91u panics in line %d", __LINE__); |
| } |
| i91u_debug = setup_debug; |
| #endif |
| } |
| /* Get total number of adapters in the motherboard */ |
| #ifdef CONFIG_PCI |
| iAdapters = tul_NewReturnNumberOfAdapters(); |
| #else |
| iAdapters = tul_ReturnNumberOfAdapters(); |
| #endif |
| |
| if (iAdapters == 0) /* If no tulip founded, return */ |
| return (0); |
| |
| tul_num_ch = (iAdapters > tul_num_ch) ? tul_num_ch : iAdapters; |
| /* Update actually channel number */ |
| if (tul_tag_enable) { /* 1.01i */ |
| tul_num_scb = MAX_TARGETS * i91u_MAXQUEUE; |
| } else { |
| tul_num_scb = MAX_TARGETS + 3; /* 1-tape, 1-CD_ROM, 1- extra */ |
| } /* Update actually SCBs per adapter */ |
| |
| /* Get total memory needed for HCS */ |
| i = tul_num_ch * sizeof(HCS); |
| memset((unsigned char *) &tul_hcs[0], 0, i); /* Initialize tul_hcs 0 */ |
| /* Get total memory needed for SCB */ |
| |
| for (; tul_num_scb >= MAX_TARGETS + 3; tul_num_scb--) { |
| i = tul_num_ch * tul_num_scb * sizeof(SCB); |
| if ((tul_scb = (SCB *) kmalloc(i, GFP_ATOMIC | GFP_DMA)) != NULL) |
| break; |
| } |
| if (tul_scb == NULL) { |
| printk("i91u: SCB memory allocation error\n"); |
| return (0); |
| } |
| memset((unsigned char *) tul_scb, 0, i); |
| |
| pSCB = tul_scb; |
| for (i = 0; i < tul_num_ch * tul_num_scb; i++, pSCB++) { |
| pSCB->SCB_SGPAddr = (U32) VIRT_TO_BUS(&pSCB->SCB_SGList[0]); |
| } |
| |
| for (i = 0, pHCB = &tul_hcs[0]; /* Get pointer for control block */ |
| i < tul_num_ch; |
| i++, pHCB++) { |
| pHCB->pSRB_head = NULL; /* Initial SRB save queue */ |
| pHCB->pSRB_tail = NULL; /* Initial SRB save queue */ |
| pHCB->pSRB_lock = SPIN_LOCK_UNLOCKED; /* SRB save queue lock */ |
| get_tulipPCIConfig(pHCB, i); |
| |
| dBiosAdr = pHCB->HCS_BIOS; |
| dBiosAdr = (dBiosAdr << 4); |
| |
| pbBiosAdr = phys_to_virt(dBiosAdr); |
| |
| init_tulip(pHCB, tul_scb + (i * tul_num_scb), tul_num_scb, pbBiosAdr, 10); |
| request_region(pHCB->HCS_Base, 256, "i91u"); /* Register */ |
| |
| pHCB->HCS_Index = i; /* 7/29/98 */ |
| hreg = scsi_register(tpnt, sizeof(HCS)); |
| if(hreg == NULL) |
| { |
| release_region(pHCB->HCS_Base, 256); |
| return 0; |
| } |
| hreg->io_port = pHCB->HCS_Base; |
| hreg->n_io_port = 0xff; |
| hreg->can_queue = tul_num_scb; /* 03/05/98 */ |
| hreg->unique_id = pHCB->HCS_Base; |
| hreg->max_id = pHCB->HCS_MaxTar; |
| hreg->max_lun = 32; /* 10/21/97 */ |
| hreg->irq = pHCB->HCS_Intr; |
| hreg->this_id = pHCB->HCS_SCSI_ID; /* Assign HCS index */ |
| hreg->base = (unsigned long)pHCB; |
| hreg->sg_tablesize = TOTAL_SG_ENTRY; /* Maximun support is 32 */ |
| |
| /* Initial tulip chip */ |
| switch (i) { |
| case 0: |
| ok = request_irq(pHCB->HCS_Intr, i91u_intr0, SA_INTERRUPT | SA_SHIRQ, "i91u", hreg); |
| break; |
| case 1: |
| ok = request_irq(pHCB->HCS_Intr, i91u_intr1, SA_INTERRUPT | SA_SHIRQ, "i91u", hreg); |
| break; |
| case 2: |
| ok = request_irq(pHCB->HCS_Intr, i91u_intr2, SA_INTERRUPT | SA_SHIRQ, "i91u", hreg); |
| break; |
| case 3: |
| ok = request_irq(pHCB->HCS_Intr, i91u_intr3, SA_INTERRUPT | SA_SHIRQ, "i91u", hreg); |
| break; |
| case 4: |
| ok = request_irq(pHCB->HCS_Intr, i91u_intr4, SA_INTERRUPT | SA_SHIRQ, "i91u", hreg); |
| break; |
| case 5: |
| ok = request_irq(pHCB->HCS_Intr, i91u_intr5, SA_INTERRUPT | SA_SHIRQ, "i91u", hreg); |
| break; |
| case 6: |
| ok = request_irq(pHCB->HCS_Intr, i91u_intr6, SA_INTERRUPT | SA_SHIRQ, "i91u", hreg); |
| break; |
| case 7: |
| ok = request_irq(pHCB->HCS_Intr, i91u_intr7, SA_INTERRUPT | SA_SHIRQ, "i91u", hreg); |
| break; |
| default: |
| i91u_panic("i91u: Too many host adapters\n"); |
| break; |
| } |
| if (ok < 0) { |
| if (ok == -EINVAL) { |
| printk("i91u: bad IRQ %d.\n", pHCB->HCS_Intr); |
| printk(" Contact author.\n"); |
| } else if (ok == -EBUSY) |
| printk("i91u: IRQ %d already in use. Configure another.\n", |
| pHCB->HCS_Intr); |
| else { |
| printk("\ni91u: Unexpected error code on requesting IRQ %d.\n", |
| pHCB->HCS_Intr); |
| printk(" Contact author.\n"); |
| } |
| i91u_panic("i91u: driver needs an IRQ.\n"); |
| } |
| } |
| |
| tpnt->this_id = -1; |
| tpnt->can_queue = 1; |
| |
| return 1; |
| } |
| |
| static void i91uBuildSCB(HCS * pHCB, SCB * pSCB, Scsi_Cmnd * SCpnt) |
| { /* Create corresponding SCB */ |
| struct scatterlist *pSrbSG; |
| SG *pSG; /* Pointer to SG list */ |
| int i; |
| long TotalLen; |
| |
| pSCB->SCB_Post = i91uSCBPost; /* i91u's callback routine */ |
| pSCB->SCB_Srb = SCpnt; |
| pSCB->SCB_Opcode = ExecSCSI; |
| pSCB->SCB_Flags = SCF_POST; /* After SCSI done, call post routine */ |
| pSCB->SCB_Target = SCpnt->target; |
| pSCB->SCB_Lun = SCpnt->lun; |
| pSCB->SCB_Ident = SCpnt->lun | DISC_ALLOW; |
| pSCB->SCB_Flags |= SCF_SENSE; /* Turn on auto request sense */ |
| |
| pSCB->SCB_SensePtr = (U32) VIRT_TO_BUS(SCpnt->sense_buffer); |
| |
| pSCB->SCB_SenseLen = SENSE_SIZE; |
| |
| pSCB->SCB_CDBLen = SCpnt->cmd_len; |
| pSCB->SCB_HaStat = 0; |
| pSCB->SCB_TaStat = 0; |
| memcpy(&pSCB->SCB_CDB[0], &SCpnt->cmnd, SCpnt->cmd_len); |
| |
| if (SCpnt->device->tagged_supported) { /* Tag Support */ |
| pSCB->SCB_TagMsg = SIMPLE_QUEUE_TAG; /* Do simple tag only */ |
| } else { |
| pSCB->SCB_TagMsg = 0; /* No tag support */ |
| } |
| |
| if (SCpnt->use_sg) { |
| pSrbSG = (struct scatterlist *) SCpnt->request_buffer; |
| if (SCpnt->use_sg == 1) { /* If only one entry in the list *//* treat it as regular I/O */ |
| pSCB->SCB_BufPtr = (U32) VIRT_TO_BUS(pSrbSG->address); |
| TotalLen = pSrbSG->length; |
| pSCB->SCB_SGLen = 0; |
| } else { /* Assign SG physical address */ |
| pSCB->SCB_BufPtr = pSCB->SCB_SGPAddr; |
| pSCB->SCB_Flags |= SCF_SG; /* Turn on SG list flag */ |
| for (i = 0, TotalLen = 0, pSG = &pSCB->SCB_SGList[0]; /* 1.01g */ |
| i < SCpnt->use_sg; |
| i++, pSG++, pSrbSG++) { |
| pSG->SG_Ptr = (U32) VIRT_TO_BUS(pSrbSG->address); |
| TotalLen += pSG->SG_Len = pSrbSG->length; |
| } |
| pSCB->SCB_SGLen = i; |
| } |
| pSCB->SCB_BufLen = (SCpnt->request_bufflen > TotalLen) ? |
| TotalLen : SCpnt->request_bufflen; |
| } else { /* Non SG */ |
| pSCB->SCB_BufPtr = (U32) VIRT_TO_BUS(SCpnt->request_buffer); |
| pSCB->SCB_BufLen = SCpnt->request_bufflen; |
| pSCB->SCB_SGLen = 0; |
| } |
| |
| return; |
| } |
| |
| /* |
| * Queue a command and setup interrupts for a free bus. |
| */ |
| int i91u_queue(Scsi_Cmnd * SCpnt, void (*done) (Scsi_Cmnd *)) |
| { |
| register SCB *pSCB; |
| HCS *pHCB; /* Point to Host adapter control block */ |
| |
| if (SCpnt->lun > 16) { /* 07/22/98 */ |
| |
| SCpnt->result = (DID_TIME_OUT << 16); |
| done(SCpnt); /* Notify system DONE */ |
| return (0); |
| } |
| pHCB = (HCS *) SCpnt->host->base; |
| |
| SCpnt->scsi_done = done; |
| /* Get free SCSI control block */ |
| if ((pSCB = tul_alloc_scb(pHCB)) == NULL) { |
| i91uAppendSRBToQueue(pHCB, SCpnt); /* Buffer this request */ |
| return (0); |
| } |
| i91uBuildSCB(pHCB, pSCB, SCpnt); |
| tul_exec_scb(pHCB, pSCB); /* Start execute SCB */ |
| return (0); |
| } |
| |
| /* |
| * We only support command in interrupt-driven fashion |
| */ |
| int i91u_command(Scsi_Cmnd * SCpnt) |
| { |
| printk("i91u: interrupt driven driver; use i91u_queue()\n"); |
| return -1; |
| } |
| |
| /* |
| * Abort a queued command |
| * (commands that are on the bus can't be aborted easily) |
| */ |
| int i91u_abort(Scsi_Cmnd * SCpnt) |
| { |
| HCS *pHCB; |
| |
| pHCB = (HCS *) SCpnt->host->base; |
| return tul_abort_srb(pHCB, SCpnt); |
| } |
| |
| /* |
| * Reset registers, reset a hanging bus and |
| * kill active and disconnected commands for target w/o soft reset |
| */ |
| int i91u_reset(Scsi_Cmnd * SCpnt, unsigned int reset_flags) |
| { /* I need Host Control Block Information */ |
| HCS *pHCB; |
| |
| pHCB = (HCS *) SCpnt->host->base; |
| |
| if (reset_flags & (SCSI_RESET_SUGGEST_BUS_RESET | SCSI_RESET_SUGGEST_HOST_RESET)) |
| return tul_reset_scsi_bus(pHCB); |
| else |
| return tul_device_reset(pHCB, (ULONG) SCpnt, SCpnt->target, reset_flags); |
| } |
| |
| /* |
| * Return the "logical geometry" |
| */ |
| int i91u_biosparam(Scsi_Disk * disk, kdev_t dev, int *info_array) |
| { |
| HCS *pHcb; /* Point to Host adapter control block */ |
| TCS *pTcb; |
| |
| pHcb = (HCS *) disk->device->host->base; |
| pTcb = &pHcb->HCS_Tcs[disk->device->id]; |
| |
| if (pTcb->TCS_DrvHead) { |
| info_array[0] = pTcb->TCS_DrvHead; |
| info_array[1] = pTcb->TCS_DrvSector; |
| info_array[2] = disk->capacity / pTcb->TCS_DrvHead / pTcb->TCS_DrvSector; |
| } else { |
| if (pTcb->TCS_DrvFlags & TCF_DRV_255_63) { |
| info_array[0] = 255; |
| info_array[1] = 63; |
| info_array[2] = disk->capacity / 255 / 63; |
| } else { |
| info_array[0] = 64; |
| info_array[1] = 32; |
| info_array[2] = disk->capacity >> 11; |
| } |
| } |
| |
| #if defined(DEBUG_BIOSPARAM) |
| if (i91u_debug & debug_biosparam) { |
| printk("bios geometry: head=%d, sec=%d, cyl=%d\n", |
| info_array[0], info_array[1], info_array[2]); |
| printk("WARNING: check, if the bios geometry is correct.\n"); |
| } |
| #endif |
| |
| return 0; |
| } |
| |
| /***************************************************************************** |
| Function name : i91uSCBPost |
| Description : This is callback routine be called when tulip finish one |
| SCSI command. |
| Input : pHCB - Pointer to host adapter control block. |
| pSCB - Pointer to SCSI control block. |
| Output : None. |
| Return : None. |
| *****************************************************************************/ |
| static void i91uSCBPost(BYTE * pHcb, BYTE * pScb) |
| { |
| Scsi_Cmnd *pSRB; /* Pointer to SCSI request block */ |
| HCS *pHCB; |
| SCB *pSCB; |
| |
| pHCB = (HCS *) pHcb; |
| pSCB = (SCB *) pScb; |
| if ((pSRB = pSCB->SCB_Srb) == 0) { |
| printk("i91uSCBPost: SRB pointer is empty\n"); |
| |
| tul_release_scb(pHCB, pSCB); /* Release SCB for current channel */ |
| return; |
| } |
| switch (pSCB->SCB_HaStat) { |
| case 0x0: |
| case 0xa: /* Linked command complete without error and linked normally */ |
| case 0xb: /* Linked command complete without error interrupt generated */ |
| pSCB->SCB_HaStat = 0; |
| break; |
| |
| case 0x11: /* Selection time out-The initiator selection or target |
| reselection was not complete within the SCSI Time out period */ |
| pSCB->SCB_HaStat = DID_TIME_OUT; |
| break; |
| |
| case 0x14: /* Target bus phase sequence failure-An invalid bus phase or bus |
| phase sequence was requested by the target. The host adapter |
| will generate a SCSI Reset Condition, notifying the host with |
| a SCRD interrupt */ |
| pSCB->SCB_HaStat = DID_RESET; |
| break; |
| |
| case 0x1a: /* SCB Aborted. 07/21/98 */ |
| pSCB->SCB_HaStat = DID_ABORT; |
| break; |
| |
| case 0x12: /* Data overrun/underrun-The target attempted to transfer more data |
| than was allocated by the Data Length field or the sum of the |
| Scatter / Gather Data Length fields. */ |
| case 0x13: /* Unexpected bus free-The target dropped the SCSI BSY at an unexpected time. */ |
| case 0x16: /* Invalid SCB Operation Code. */ |
| |
| default: |
| printk("ini9100u: %x %x\n", pSCB->SCB_HaStat, pSCB->SCB_TaStat); |
| pSCB->SCB_HaStat = DID_ERROR; /* Couldn't find any better */ |
| break; |
| } |
| |
| pSRB->result = pSCB->SCB_TaStat | (pSCB->SCB_HaStat << 16); |
| |
| if (pSRB == NULL) { |
| printk("pSRB is NULL\n"); |
| } |
| pSRB->scsi_done(pSRB); /* Notify system DONE */ |
| if ((pSRB = i91uPopSRBFromQueue(pHCB)) != NULL) |
| /* Find the next pending SRB */ |
| { /* Assume resend will success */ |
| /* Reuse old SCB */ |
| i91uBuildSCB(pHCB, pSCB, pSRB); /* Create corresponding SCB */ |
| |
| tul_exec_scb(pHCB, pSCB); /* Start execute SCB */ |
| } else { /* No Pending SRB */ |
| tul_release_scb(pHCB, pSCB); /* Release SCB for current channel */ |
| } |
| return; |
| } |
| |
| /* |
| * Interrupts handler (main routine of the driver) |
| */ |
| static void i91u_intr0(int irqno, void *dev_id, struct pt_regs *regs) |
| { |
| unsigned long flags; |
| |
| if (tul_hcs[0].HCS_Intr != irqno) |
| return; |
| |
| spin_lock_irqsave(&io_request_lock, flags); |
| |
| tul_isr(&tul_hcs[0]); |
| |
| spin_unlock_irqrestore(&io_request_lock, flags); |
| } |
| |
| static void i91u_intr1(int irqno, void *dev_id, struct pt_regs *regs) |
| { |
| unsigned long flags; |
| |
| if (tul_hcs[1].HCS_Intr != irqno) |
| return; |
| |
| spin_lock_irqsave(&io_request_lock, flags); |
| |
| tul_isr(&tul_hcs[1]); |
| |
| spin_unlock_irqrestore(&io_request_lock, flags); |
| } |
| |
| static void i91u_intr2(int irqno, void *dev_id, struct pt_regs *regs) |
| { |
| unsigned long flags; |
| |
| if (tul_hcs[2].HCS_Intr != irqno) |
| return; |
| |
| spin_lock_irqsave(&io_request_lock, flags); |
| |
| tul_isr(&tul_hcs[2]); |
| |
| spin_unlock_irqrestore(&io_request_lock, flags); |
| } |
| |
| static void i91u_intr3(int irqno, void *dev_id, struct pt_regs *regs) |
| { |
| unsigned long flags; |
| |
| if (tul_hcs[3].HCS_Intr != irqno) |
| return; |
| |
| spin_lock_irqsave(&io_request_lock, flags); |
| |
| tul_isr(&tul_hcs[3]); |
| |
| spin_unlock_irqrestore(&io_request_lock, flags); |
| } |
| |
| static void i91u_intr4(int irqno, void *dev_id, struct pt_regs *regs) |
| { |
| unsigned long flags; |
| |
| if (tul_hcs[4].HCS_Intr != irqno) |
| return; |
| |
| spin_lock_irqsave(&io_request_lock, flags); |
| |
| tul_isr(&tul_hcs[4]); |
| |
| spin_unlock_irqrestore(&io_request_lock, flags); |
| } |
| |
| static void i91u_intr5(int irqno, void *dev_id, struct pt_regs *regs) |
| { |
| unsigned long flags; |
| |
| if (tul_hcs[5].HCS_Intr != irqno) |
| return; |
| |
| spin_lock_irqsave(&io_request_lock, flags); |
| |
| tul_isr(&tul_hcs[5]); |
| |
| spin_unlock_irqrestore(&io_request_lock, flags); |
| } |
| |
| static void i91u_intr6(int irqno, void *dev_id, struct pt_regs *regs) |
| { |
| unsigned long flags; |
| |
| if (tul_hcs[6].HCS_Intr != irqno) |
| return; |
| |
| spin_lock_irqsave(&io_request_lock, flags); |
| |
| tul_isr(&tul_hcs[6]); |
| |
| spin_unlock_irqrestore(&io_request_lock, flags); |
| } |
| |
| static void i91u_intr7(int irqno, void *dev_id, struct pt_regs *regs) |
| { |
| unsigned long flags; |
| |
| if (tul_hcs[7].HCS_Intr != irqno) |
| return; |
| |
| spin_lock_irqsave(&io_request_lock, flags); |
| |
| tul_isr(&tul_hcs[7]); |
| |
| spin_unlock_irqrestore(&io_request_lock, flags); |
| } |
| |
| /* |
| * Dump the current driver status and panic... |
| */ |
| static void i91u_panic(char *msg) |
| { |
| printk("\ni91u_panic: %s\n", msg); |
| panic("i91u panic"); |
| } |
| |
| /* |
| * Release ressources |
| */ |
| int i91u_release(struct Scsi_Host *hreg) |
| { |
| free_irq(hreg->irq, hreg); |
| release_region(hreg->io_port, 256); |
| return 0; |
| } |
| MODULE_LICENSE("Dual BSD/GPL"); |