From 2e91724658d5d6b5f10ad44c8742d7ec1f4833ed Mon Sep 17 00:00:00 2001 From: FUJITA Tomonori Date: Sat, 26 May 2007 02:12:48 +0900 Subject: [PATCH] [SCSI] nsp32: convert to use the data buffer accessors - remove the unnecessary map_single path. - convert to use the new accessors for the sg lists and the parameters. Jens Axboe did the for_each_sg cleanup. Signed-off-by: FUJITA Tomonori Acked-by: GOTO Masanori Signed-off-by: James Bottomley --- drivers/scsi/nsp32.c | 85 +++++++++++++------------------------------- 1 file changed, 24 insertions(+), 61 deletions(-) diff --git a/drivers/scsi/nsp32.c b/drivers/scsi/nsp32.c index e4dfdfb8af3a..8cc9e64bbdff 100644 --- a/drivers/scsi/nsp32.c +++ b/drivers/scsi/nsp32.c @@ -719,7 +719,7 @@ static int nsp32_selection_autoscsi(struct scsi_cmnd *SCpnt) command = 0; command |= (TRANSFER_GO | ALL_COUNTER_CLR); if (data->trans_method & NSP32_TRANSFER_BUSMASTER) { - if (SCpnt->request_bufflen > 0) { + if (scsi_bufflen(SCpnt) > 0) { command |= BM_START; } } else if (data->trans_method & NSP32_TRANSFER_MMIO) { @@ -868,31 +868,28 @@ static int nsp32_reselection(struct scsi_cmnd *SCpnt, unsigned char newlun) static int nsp32_setup_sg_table(struct scsi_cmnd *SCpnt) { nsp32_hw_data *data = (nsp32_hw_data *)SCpnt->device->host->hostdata; - struct scatterlist *sgl; + struct scatterlist *sg; nsp32_sgtable *sgt = data->cur_lunt->sglun->sgt; int num, i; u32_le l; - if (SCpnt->request_bufflen == 0) { - return TRUE; - } - if (sgt == NULL) { nsp32_dbg(NSP32_DEBUG_SGLIST, "SGT == null"); return FALSE; } - if (SCpnt->use_sg) { - sgl = (struct scatterlist *)SCpnt->request_buffer; - num = pci_map_sg(data->Pci, sgl, SCpnt->use_sg, - SCpnt->sc_data_direction); - for (i = 0; i < num; i++) { + num = scsi_dma_map(SCpnt); + if (!num) + return TRUE; + else if (num < 0) + return FALSE; + else { + scsi_for_each_sg(SCpnt, sg, num, i) { /* * Build nsp32_sglist, substitute sg dma addresses. */ - sgt[i].addr = cpu_to_le32(sg_dma_address(sgl)); - sgt[i].len = cpu_to_le32(sg_dma_len(sgl)); - sgl++; + sgt[i].addr = cpu_to_le32(sg_dma_address(sg)); + sgt[i].len = cpu_to_le32(sg_dma_len(sg)); if (le32_to_cpu(sgt[i].len) > 0x10000) { nsp32_msg(KERN_ERR, @@ -909,23 +906,6 @@ static int nsp32_setup_sg_table(struct scsi_cmnd *SCpnt) /* set end mark */ l = le32_to_cpu(sgt[num-1].len); sgt[num-1].len = cpu_to_le32(l | SGTEND); - - } else { - SCpnt->SCp.have_data_in = pci_map_single(data->Pci, - SCpnt->request_buffer, SCpnt->request_bufflen, - SCpnt->sc_data_direction); - - sgt[0].addr = cpu_to_le32(SCpnt->SCp.have_data_in); - sgt[0].len = cpu_to_le32(SCpnt->request_bufflen | SGTEND); /* set end mark */ - - if (SCpnt->request_bufflen > 0x10000) { - nsp32_msg(KERN_ERR, - "can't transfer over 64KB at a time, size=0x%lx", SCpnt->request_bufflen); - return FALSE; - } - nsp32_dbg(NSP32_DEBUG_SGLIST, "single : addr 0x%lx len=0x%lx", - le32_to_cpu(sgt[0].addr), - le32_to_cpu(sgt[0].len )); } return TRUE; @@ -942,7 +922,7 @@ static int nsp32_queuecommand(struct scsi_cmnd *SCpnt, void (*done)(struct scsi_ "enter. target: 0x%x LUN: 0x%x cmnd: 0x%x cmndlen: 0x%x " "use_sg: 0x%x reqbuf: 0x%lx reqlen: 0x%x", SCpnt->device->id, SCpnt->device->lun, SCpnt->cmnd[0], SCpnt->cmd_len, - SCpnt->use_sg, SCpnt->request_buffer, SCpnt->request_bufflen); + scsi_sg_count(SCpnt), scsi_sglist(SCpnt), scsi_bufflen(SCpnt)); if (data->CurrentSC != NULL) { nsp32_msg(KERN_ERR, "Currentsc != NULL. Cancel this command request"); @@ -974,10 +954,10 @@ static int nsp32_queuecommand(struct scsi_cmnd *SCpnt, void (*done)(struct scsi_ data->CurrentSC = SCpnt; SCpnt->SCp.Status = CHECK_CONDITION; SCpnt->SCp.Message = 0; - SCpnt->resid = SCpnt->request_bufflen; + scsi_set_resid(SCpnt, scsi_bufflen(SCpnt)); - SCpnt->SCp.ptr = (char *) SCpnt->request_buffer; - SCpnt->SCp.this_residual = SCpnt->request_bufflen; + SCpnt->SCp.ptr = (char *)scsi_sglist(SCpnt); + SCpnt->SCp.this_residual = scsi_bufflen(SCpnt); SCpnt->SCp.buffer = NULL; SCpnt->SCp.buffers_residual = 0; @@ -1288,7 +1268,7 @@ static irqreturn_t do_nsp32_isr(int irq, void *dev_id) } if ((auto_stat & DATA_IN_PHASE) && - (SCpnt->resid > 0) && + (scsi_get_resid(SCpnt) > 0) && ((nsp32_read2(base, FIFO_REST_CNT) & FIFO_REST_MASK) != 0)) { printk( "auto+fifo\n"); //nsp32_pio_read(SCpnt); @@ -1309,7 +1289,7 @@ static irqreturn_t do_nsp32_isr(int irq, void *dev_id) nsp32_dbg(NSP32_DEBUG_INTR, "SSACK=0x%lx", nsp32_read4(base, SAVED_SACK_CNT)); - SCpnt->resid = 0; /* all data transfered! */ + scsi_set_resid(SCpnt, 0); /* all data transfered! */ } /* @@ -1577,25 +1557,8 @@ static void nsp32_scsi_done(struct scsi_cmnd *SCpnt) nsp32_hw_data *data = (nsp32_hw_data *)SCpnt->device->host->hostdata; unsigned int base = SCpnt->device->host->io_port; - /* - * unmap pci - */ - if (SCpnt->request_bufflen == 0) { - goto skip; - } - - if (SCpnt->use_sg) { - pci_unmap_sg(data->Pci, - (struct scatterlist *)SCpnt->request_buffer, - SCpnt->use_sg, SCpnt->sc_data_direction); - } else { - pci_unmap_single(data->Pci, - (u32)SCpnt->SCp.have_data_in, - SCpnt->request_bufflen, - SCpnt->sc_data_direction); - } + scsi_dma_unmap(SCpnt); - skip: /* * clear TRANSFERCONTROL_BM_START */ @@ -1751,7 +1714,7 @@ static int nsp32_busfree_occur(struct scsi_cmnd *SCpnt, unsigned short execph) SCpnt->SCp.Message = 0; nsp32_dbg(NSP32_DEBUG_BUSFREE, "normal end stat=0x%x resid=0x%x\n", - SCpnt->SCp.Status, SCpnt->resid); + SCpnt->SCp.Status, scsi_get_resid(SCpnt)); SCpnt->result = (DID_OK << 16) | (SCpnt->SCp.Message << 8) | (SCpnt->SCp.Status << 0); @@ -1795,7 +1758,7 @@ static void nsp32_adjust_busfree(struct scsi_cmnd *SCpnt, unsigned int s_sacklen unsigned int restlen, sentlen; u32_le len, addr; - nsp32_dbg(NSP32_DEBUG_SGLIST, "old resid=0x%x", SCpnt->resid); + nsp32_dbg(NSP32_DEBUG_SGLIST, "old resid=0x%x", scsi_get_resid(SCpnt)); /* adjust saved SACK count with 4 byte start address boundary */ s_sacklen -= le32_to_cpu(sgt[old_entry].addr) & 3; @@ -1839,12 +1802,12 @@ static void nsp32_adjust_busfree(struct scsi_cmnd *SCpnt, unsigned int s_sacklen return; last: - if (SCpnt->resid < sentlen) { + if (scsi_get_resid(SCpnt) < sentlen) { nsp32_msg(KERN_ERR, "resid underflow"); } - SCpnt->resid -= sentlen; - nsp32_dbg(NSP32_DEBUG_SGLIST, "new resid=0x%x", SCpnt->resid); + scsi_set_resid(SCpnt, scsi_get_resid(SCpnt) - sentlen); + nsp32_dbg(NSP32_DEBUG_SGLIST, "new resid=0x%x", scsi_get_resid(SCpnt)); /* update hostdata and lun */ @@ -1973,7 +1936,7 @@ static void nsp32_restart_autoscsi(struct scsi_cmnd *SCpnt, unsigned short comma transfer = 0; transfer |= (TRANSFER_GO | ALL_COUNTER_CLR); if (data->trans_method & NSP32_TRANSFER_BUSMASTER) { - if (SCpnt->request_bufflen > 0) { + if (scsi_bufflen(SCpnt) > 0) { transfer |= BM_START; } } else if (data->trans_method & NSP32_TRANSFER_MMIO) { -- 2.34.1