Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755997AbZFHVCF (ORCPT ); Mon, 8 Jun 2009 17:02:05 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1755385AbZFHVBy (ORCPT ); Mon, 8 Jun 2009 17:01:54 -0400 Received: from g5t0008.atlanta.hp.com ([15.192.0.45]:1257 "EHLO g5t0008.atlanta.hp.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753611AbZFHVBx (ORCPT ); Mon, 8 Jun 2009 17:01:53 -0400 Date: Mon, 8 Jun 2009 16:02:17 -0500 From: scameron@beardog.cca.cpqcorp.net To: linux-kernel@vger.kernel.org, linux-scsi@vger.kernel.org, axboe@kernel.dk, akpm@linux-foundation.org Cc: scameron@beardog.cca.cpqcorp.net, mikem@beardog.cca.cpqcorp.net Subject: [patch 3/8] cciss: simplify interface of sendcmd() and sendcmd_withirq() Message-ID: <20090608210217.GI23523@beardog.cca.cpqcorp.net> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.5.9i Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 15086 Lines: 415 Simplify interfaces of sendcmd() and sendcmd_withirq() so that they provide only one way to address commands instead of three ways. Signed-off-by: Stephen M. Cameron --- --- diff -puN drivers/block/cciss.c~more_sendcmd_cleanup drivers/block/cciss.c --- linux-next/drivers/block/cciss.c~more_sendcmd_cleanup 2009-06-08 12:58:49.000000000 -0500 +++ linux-next-scameron/drivers/block/cciss.c 2009-06-08 12:58:49.000000000 -0500 @@ -180,11 +180,10 @@ static void __devinit cciss_interrupt_mo __u32); static void start_io(ctlr_info_t *h); static int sendcmd(__u8 cmd, int ctlr, void *buff, size_t size, - unsigned int use_unit_num, unsigned int log_unit, __u8 page_code, unsigned char *scsi3addr, int cmd_type); static int sendcmd_withirq(__u8 cmd, int ctlr, void *buff, size_t size, - unsigned int use_unit_num, unsigned int log_unit, - __u8 page_code, int cmd_type); + __u8 page_code, unsigned char scsi3addr[], + int cmd_type); static void fail_all_cmds(unsigned long ctlr); static int scan_thread(void *data); @@ -1520,6 +1519,15 @@ static void cciss_softirq_done(struct re spin_unlock_irqrestore(&h->lock, flags); } +static void log_unit_to_scsi3addr(ctlr_info_t *h, unsigned char scsi3addr[], + uint32_t log_unit) +{ + log_unit = h->drv[log_unit].LunID & 0x03fff; + memset(&scsi3addr[4], 0, 4); + memcpy(&scsi3addr[0], &log_unit, 4); + scsi3addr[3] |= 0x40; +} + /* This function gets the SCSI vendor, model, and revision of a logical drive * via the inquiry page 0. Model, vendor, and rev are set to empty strings if * they cannot be read. @@ -1529,6 +1537,7 @@ static void cciss_get_device_descr(int c { int rc; InquiryData_struct *inq_buf; + unsigned char scsi3addr[8]; *vendor = '\0'; *model = '\0'; @@ -1538,14 +1547,15 @@ static void cciss_get_device_descr(int c if (!inq_buf) return; + log_unit_to_scsi3addr(hba[ctlr], scsi3addr, logvol); if (withirq) rc = sendcmd_withirq(CISS_INQUIRY, ctlr, inq_buf, - sizeof(InquiryData_struct), 1, logvol, - 0, TYPE_CMD); + sizeof(InquiryData_struct), 0, + scsi3addr, TYPE_CMD); else rc = sendcmd(CISS_INQUIRY, ctlr, inq_buf, - sizeof(InquiryData_struct), 1, logvol, 0, NULL, - TYPE_CMD); + sizeof(InquiryData_struct), 0, + scsi3addr, TYPE_CMD); if (rc == IO_OK) { memcpy(vendor, &inq_buf->data_byte[8], VENDOR_LEN); vendor[VENDOR_LEN] = '\0'; @@ -1570,6 +1580,7 @@ static void cciss_get_serial_no(int ctlr #define PAGE_83_INQ_BYTES 64 int rc; unsigned char *buf; + unsigned char scsi3addr[8]; if (buflen > 16) buflen = 16; @@ -1578,12 +1589,13 @@ static void cciss_get_serial_no(int ctlr if (!buf) return; memset(serial_no, 0, buflen); + log_unit_to_scsi3addr(hba[ctlr], scsi3addr, logvol); if (withirq) rc = sendcmd_withirq(CISS_INQUIRY, ctlr, buf, - PAGE_83_INQ_BYTES, 1, logvol, 0x83, TYPE_CMD); + PAGE_83_INQ_BYTES, 0x83, scsi3addr, TYPE_CMD); else rc = sendcmd(CISS_INQUIRY, ctlr, buf, - PAGE_83_INQ_BYTES, 1, logvol, 0x83, NULL, TYPE_CMD); + PAGE_83_INQ_BYTES, 0x83, scsi3addr, TYPE_CMD); if (rc == IO_OK) memcpy(serial_no, &buf[8], buflen); kfree(buf); @@ -1902,8 +1914,8 @@ static int rebuild_lun_table(ctlr_info_t goto mem_msg; return_code = sendcmd_withirq(CISS_REPORT_LOG, ctlr, ld_buff, - sizeof(ReportLunData_struct), 0, - 0, 0, TYPE_CMD); + sizeof(ReportLunData_struct), + 0, CTLR_LUNID, TYPE_CMD); if (return_code == IO_OK) listlength = be32_to_cpu(*(__be32 *) ld_buff->LUNListLength); @@ -2112,11 +2124,9 @@ static int deregister_disk(ctlr_info_t * return 0; } -static int fill_cmd(CommandList_struct *c, __u8 cmd, int ctlr, void *buff, size_t size, unsigned int use_unit_num, /* 0: address the controller, - 1: address logical volume log_unit, - 2: periph device address is scsi3addr */ - unsigned int log_unit, __u8 page_code, - unsigned char *scsi3addr, int cmd_type) +static int fill_cmd(CommandList_struct *c, __u8 cmd, int ctlr, void *buff, + size_t size, __u8 page_code, unsigned char *scsi3addr, + int cmd_type) { ctlr_info_t *h = hba[ctlr]; u64bit buff_dma_handle; @@ -2132,27 +2142,12 @@ static int fill_cmd(CommandList_struct * c->Header.SGTotal = 0; } c->Header.Tag.lower = c->busaddr; + memcpy(c->Header.LUN.LunAddrBytes, scsi3addr, 8); c->Request.Type.Type = cmd_type; if (cmd_type == TYPE_CMD) { switch (cmd) { case CISS_INQUIRY: - /* If the logical unit number is 0 then, this is going - to controller so It's a physical command - mode = 0 target = 0. So we have nothing to write. - otherwise, if use_unit_num == 1, - mode = 1(volume set addressing) target = LUNID - otherwise, if use_unit_num == 2, - mode = 0(periph dev addr) target = scsi3addr */ - if (use_unit_num == 1) { - c->Header.LUN.LogDev.VolId = - h->drv[log_unit].LunID; - c->Header.LUN.LogDev.Mode = 1; - } else if (use_unit_num == 2) { - memcpy(c->Header.LUN.LunAddrBytes, scsi3addr, - 8); - c->Header.LUN.LogDev.Mode = 0; - } /* are we trying to read a vital product page */ if (page_code != 0) { c->Request.CDB[1] = 0x01; @@ -2182,8 +2177,6 @@ static int fill_cmd(CommandList_struct * break; case CCISS_READ_CAPACITY: - c->Header.LUN.LogDev.VolId = h->drv[log_unit].LunID; - c->Header.LUN.LogDev.Mode = 1; c->Request.CDBLen = 10; c->Request.Type.Attribute = ATTR_SIMPLE; c->Request.Type.Direction = XFER_READ; @@ -2191,8 +2184,6 @@ static int fill_cmd(CommandList_struct * c->Request.CDB[0] = cmd; break; case CCISS_READ_CAPACITY_16: - c->Header.LUN.LogDev.VolId = h->drv[log_unit].LunID; - c->Header.LUN.LogDev.Mode = 1; c->Request.CDBLen = 16; c->Request.Type.Attribute = ATTR_SIMPLE; c->Request.Type.Direction = XFER_READ; @@ -2215,7 +2206,6 @@ static int fill_cmd(CommandList_struct * c->Request.CDB[6] = BMIC_CACHE_FLUSH; break; case TEST_UNIT_READY: - memcpy(c->Header. LUN.LunAddrBytes, scsi3addr, 8); c->Request.CDBLen = 6; c->Request.Type.Attribute = ATTR_SIMPLE; c->Request.Type.Direction = XFER_NONE; @@ -2239,7 +2229,6 @@ static int fill_cmd(CommandList_struct * memcpy(&c->Request.CDB[4], buff, 8); break; case 1: /* RESET message */ - memcpy(c->Header.LUN.LunAddrBytes, scsi3addr, 8); c->Request.CDBLen = 16; c->Request.Type.Attribute = ATTR_SIMPLE; c->Request.Type.Direction = XFER_NONE; @@ -2307,6 +2296,9 @@ resend_cmd2: printk(KERN_WARNING "cciss: cmd 0x%02x " "has SCSI Status = %x\n", c->Request.CDB[0], c->err_info->ScsiStatus); + if (c->err_info->ScsiStatus == SAM_STAT_CHECK_CONDITION) + printk(KERN_WARNING "sense key = 0x%02x\n", + 0xf & c->err_info->SenseInfo[2]); } break; case CMD_DATA_UNDERRUN: @@ -2377,12 +2369,9 @@ command_done: return return_status; } -static int sendcmd_withirq(__u8 cmd, - int ctlr, - void *buff, - size_t size, - unsigned int use_unit_num, - unsigned int log_unit, __u8 page_code, int cmd_type) +static int sendcmd_withirq(__u8 cmd, int ctlr, void *buff, size_t size, + __u8 page_code, unsigned char scsi3addr[], + int cmd_type) { ctlr_info_t *h = hba[ctlr]; CommandList_struct *c; @@ -2391,8 +2380,8 @@ static int sendcmd_withirq(__u8 cmd, c = cmd_alloc(h, 0); if (!c) return -ENOMEM; - return_status = fill_cmd(c, cmd, ctlr, buff, size, use_unit_num, - log_unit, page_code, NULL, cmd_type); + return_status = fill_cmd(c, cmd, ctlr, buff, size, page_code, + scsi3addr, cmd_type); if (return_status == IO_OK) return_status = sendcmd_withirq_core(h, c); cmd_free(h, c, 0); @@ -2407,15 +2396,17 @@ static void cciss_geometry_inquiry(int c { int return_code; unsigned long t; + unsigned char scsi3addr[8]; memset(inq_buff, 0, sizeof(InquiryData_struct)); + log_unit_to_scsi3addr(hba[ctlr], scsi3addr, logvol); if (withirq) return_code = sendcmd_withirq(CISS_INQUIRY, ctlr, - inq_buff, sizeof(*inq_buff), 1, - logvol, 0xC1, TYPE_CMD); + inq_buff, sizeof(*inq_buff), + 0xC1, scsi3addr, TYPE_CMD); else return_code = sendcmd(CISS_INQUIRY, ctlr, inq_buff, - sizeof(*inq_buff), 1, logvol, 0xC1, NULL, + sizeof(*inq_buff), 0xC1, scsi3addr, TYPE_CMD); if (return_code == IO_OK) { if (inq_buff->data_byte[8] == 0xFF) { @@ -2456,6 +2447,7 @@ cciss_read_capacity(int ctlr, int logvol { ReadCapdata_struct *buf; int return_code; + unsigned char scsi3addr[8]; buf = kzalloc(sizeof(ReadCapdata_struct), GFP_KERNEL); if (!buf) { @@ -2463,14 +2455,15 @@ cciss_read_capacity(int ctlr, int logvol return; } + log_unit_to_scsi3addr(hba[ctlr], scsi3addr, logvol); if (withirq) return_code = sendcmd_withirq(CCISS_READ_CAPACITY, ctlr, buf, sizeof(ReadCapdata_struct), - 1, logvol, 0, TYPE_CMD); + 0, scsi3addr, TYPE_CMD); else return_code = sendcmd(CCISS_READ_CAPACITY, ctlr, buf, sizeof(ReadCapdata_struct), - 1, logvol, 0, NULL, TYPE_CMD); + 0, scsi3addr, TYPE_CMD); if (return_code == IO_OK) { *total_size = be32_to_cpu(*(__be32 *) buf->total_size); *block_size = be32_to_cpu(*(__be32 *) buf->block_size); @@ -2490,6 +2483,7 @@ cciss_read_capacity_16(int ctlr, int log { ReadCapdata_struct_16 *buf; int return_code; + unsigned char scsi3addr[8]; buf = kzalloc(sizeof(ReadCapdata_struct_16), GFP_KERNEL); if (!buf) { @@ -2497,15 +2491,16 @@ cciss_read_capacity_16(int ctlr, int log return; } + log_unit_to_scsi3addr(hba[ctlr], scsi3addr, logvol); if (withirq) { return_code = sendcmd_withirq(CCISS_READ_CAPACITY_16, ctlr, buf, sizeof(ReadCapdata_struct_16), - 1, logvol, 0, TYPE_CMD); + 0, scsi3addr, TYPE_CMD); } else { return_code = sendcmd(CCISS_READ_CAPACITY_16, ctlr, buf, sizeof(ReadCapdata_struct_16), - 1, logvol, 0, NULL, TYPE_CMD); + 0, scsi3addr, TYPE_CMD); } if (return_code == IO_OK) { *total_size = be64_to_cpu(*(__be64 *) buf->total_size); @@ -2760,10 +2755,6 @@ cleanup1: * Used at init time, and during SCSI error recovery. */ static int sendcmd(__u8 cmd, int ctlr, void *buff, size_t size, - unsigned int use_unit_num,/* 0: address the controller, - 1: address logical volume log_unit, - 2: periph device address is scsi3addr */ - unsigned int log_unit, __u8 page_code, unsigned char *scsi3addr, int cmd_type) { CommandList_struct *c; @@ -2774,8 +2765,8 @@ static int sendcmd(__u8 cmd, int ctlr, v printk(KERN_WARNING "cciss: unable to get memory"); return IO_ERROR; } - status = fill_cmd(c, cmd, ctlr, buff, size, use_unit_num, - log_unit, page_code, scsi3addr, cmd_type); + status = fill_cmd(c, cmd, ctlr, buff, size, page_code, + scsi3addr, cmd_type); if (status == IO_OK) status = sendcmd_core(hba[ctlr], c); cmd_free(hba[ctlr], c, 1); @@ -4076,7 +4067,7 @@ static int __devinit cciss_init_one(stru } return_code = sendcmd_withirq(CISS_INQUIRY, i, inq_buff, - sizeof(InquiryData_struct), 0, 0 , 0, TYPE_CMD); + sizeof(InquiryData_struct), 0, CTLR_LUNID, TYPE_CMD); if (return_code == IO_OK) { hba[i]->firm_ver[0] = inq_buff->data_byte[32]; hba[i]->firm_ver[1] = inq_buff->data_byte[33]; @@ -4157,8 +4148,8 @@ static void cciss_shutdown(struct pci_de /* sendcmd will turn off interrupt, and send the flush... * To write all data in the battery backed cache to disks */ memset(flush_buf, 0, 4); - return_code = sendcmd(CCISS_CACHE_FLUSH, i, flush_buf, 4, 0, 0, 0, NULL, - TYPE_CMD); + return_code = sendcmd(CCISS_CACHE_FLUSH, i, flush_buf, 4, 0, + CTLR_LUNID, TYPE_CMD); if (return_code == IO_OK) { printk(KERN_INFO "Completed flushing cache on controller %d\n", i); } else { diff -puN drivers/block/cciss_cmd.h~more_sendcmd_cleanup drivers/block/cciss_cmd.h --- linux-next/drivers/block/cciss_cmd.h~more_sendcmd_cleanup 2009-06-08 12:58:49.000000000 -0500 +++ linux-next-scameron/drivers/block/cciss_cmd.h 2009-06-08 12:58:49.000000000 -0500 @@ -217,6 +217,8 @@ typedef union _LUNAddr_struct { LogDevAddr_struct LogDev; } LUNAddr_struct; +#define CTLR_LUNID "\0\0\0\0\0\0\0\0" + typedef struct _CommandListHeader_struct { BYTE ReplyQueue; BYTE SGList; diff -puN drivers/block/cciss_scsi.c~more_sendcmd_cleanup drivers/block/cciss_scsi.c --- linux-next/drivers/block/cciss_scsi.c~more_sendcmd_cleanup 2009-06-08 12:58:49.000000000 -0500 +++ linux-next-scameron/drivers/block/cciss_scsi.c 2009-06-08 12:58:49.000000000 -0500 @@ -44,26 +44,9 @@ #define CCISS_ABORT_MSG 0x00 #define CCISS_RESET_MSG 0x01 -/* some prototypes... */ -static int sendcmd( - __u8 cmd, - int ctlr, - void *buff, - size_t size, - unsigned int use_unit_num, /* 0: address the controller, - 1: address logical volume log_unit, - 2: address is in scsi3addr */ - unsigned int log_unit, - __u8 page_code, - unsigned char *scsi3addr, - int cmd_type); - static int fill_cmd(CommandList_struct *c, __u8 cmd, int ctlr, void *buff, size_t size, - unsigned int use_unit_num, /* 0: address the controller, - 1: address logical volume log_unit, - 2: periph device address is scsi3addr */ - unsigned int log_unit, __u8 page_code, unsigned char *scsi3addr, + __u8 page_code, unsigned char *scsi3addr, int cmd_type); static int sendcmd_core(ctlr_info_t *h, CommandList_struct *c); @@ -1616,7 +1599,7 @@ static int wait_for_device_to_become_rea waittime = waittime * 2; /* Send the Test Unit Ready */ - rc = fill_cmd(c, TEST_UNIT_READY, h->ctlr, NULL, 0, 0, 0, 0, + rc = fill_cmd(c, TEST_UNIT_READY, h->ctlr, NULL, 0, 0, lunaddr, TYPE_CMD); if (rc == 0) { rc = sendcmd_core(h, c); @@ -1680,7 +1663,7 @@ static int cciss_eh_device_reset_handler return FAILED; memcpy(lunaddr, &cmd_in_trouble->Header.LUN.LunAddrBytes[0], 8); /* send a reset to the SCSI LUN which the command was sent to */ - rc = sendcmd(CCISS_RESET_MSG, ctlr, NULL, 0, 2, 0, 0, lunaddr, + rc = sendcmd(CCISS_RESET_MSG, ctlr, NULL, 0, 0, lunaddr, TYPE_MSG); /* sendcmd turned off interrupts on the board, turn 'em back on. */ (*c)->access.set_intr_mask(*c, CCISS_INTR_ON); @@ -1708,8 +1691,7 @@ static int cciss_eh_abort_handler(struc cmd_to_abort = (CommandList_struct *) scsicmd->host_scribble; if (cmd_to_abort == NULL) /* paranoia */ return FAILED; - rc = sendcmd(CCISS_ABORT_MSG, ctlr, &cmd_to_abort->Header.Tag, - 0, 2, 0, 0, + rc = sendcmd(CCISS_ABORT_MSG, ctlr, &cmd_to_abort->Header.Tag, 0, 0, (unsigned char *) &cmd_to_abort->Header.LUN.LunAddrBytes[0], TYPE_MSG); /* sendcmd turned off interrupts on the board, turn 'em back on. */ _ -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/