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[SCSI] advansys: Use dma mapping for overrun buffer

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Convert the call to virt_to_bus() into a call to dma_map_single().  Some
architectures may require different DMA addresses for different devices,
so allocate one overrun buffer per host rather than one for all cards.

Signed-off-by: Matthew Wilcox <willy@linux.intel.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
This commit is contained in:
Matthew Wilcox 2007-10-02 21:55:41 -04:00 committed by James Bottomley
parent b249c7fda2
commit d10fb2c7b5
1 changed files with 24 additions and 18 deletions
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42
drivers/scsi/advansys.c
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@ -529,7 +529,6 @@ typedef struct asc_dvc_cfg {
ushort mcode_date;
ushort mcode_version;
uchar max_tag_qng[ASC_MAX_TID + 1];
uchar *overrun_buf;
uchar sdtr_period_offset[ASC_MAX_TID + 1];
uchar adapter_info[6];
} ASC_DVC_CFG;
@ -551,6 +550,7 @@ typedef struct asc_dvc_cfg {
#define ASC_BUG_FIX_ASYN_USE_SYN 0x0002
#define ASC_MIN_TAGGED_CMD 7
#define ASC_MAX_SCSI_RESET_WAIT 30
#define ASC_OVERRUN_BSIZE 64
struct asc_dvc_var; /* Forward Declaration. */
@ -566,6 +566,8 @@ typedef struct asc_dvc_var {
ASC_SCSI_BIT_ID_TYPE unit_not_ready;
ASC_SCSI_BIT_ID_TYPE queue_full_or_busy;
ASC_SCSI_BIT_ID_TYPE start_motor;
uchar overrun_buf[ASC_OVERRUN_BSIZE] __aligned(8);
dma_addr_t overrun_dma;
uchar scsi_reset_wait;
uchar chip_no;
char is_in_int;
@ -668,7 +670,6 @@ typedef struct asceep_config {
#define ASC_EEP_CMD_WRITE 0x40
#define ASC_EEP_CMD_WRITE_ABLE 0x30
#define ASC_EEP_CMD_WRITE_DISABLE 0x00
#define ASC_OVERRUN_BSIZE 0x00000048UL
#define ASCV_MSGOUT_BEG 0x0000
#define ASCV_MSGOUT_SDTR_PERIOD (ASCV_MSGOUT_BEG+3)
#define ASCV_MSGOUT_SDTR_OFFSET (ASCV_MSGOUT_BEG+4)
@ -2404,13 +2405,12 @@ struct asc_board {
ushort bios_codelen; /* BIOS Code Segment Length. */
};
#define asc_dvc_to_board(asc_dvc) container_of(asc_dvc, struct asc_board, \
dvc_var.asc_dvc_var)
#define adv_dvc_to_board(adv_dvc) container_of(adv_dvc, struct asc_board, \
dvc_var.adv_dvc_var)
#define adv_dvc_to_pdev(adv_dvc) to_pci_dev(adv_dvc_to_board(adv_dvc)->dev)
/* Overrun buffer used by all narrow boards. */
static uchar overrun_buf[ASC_OVERRUN_BSIZE] = { 0 };
#ifdef ADVANSYS_DEBUG
static int asc_dbglvl = 3;
@ -2465,8 +2465,8 @@ static void asc_prt_asc_dvc_cfg(ASC_DVC_CFG *h)
"chip_version %d,\n", h->chip_scsi_id, h->isa_dma_speed,
h->isa_dma_channel, h->chip_version);
printk(" mcode_date 0x%x, mcode_version %d, overrun_buf 0x%p\n",
h->mcode_date, h->mcode_version, h->overrun_buf);
printk(" mcode_date 0x%x, mcode_version %d\n",
h->mcode_date, h->mcode_version);
}
/*
@ -6316,6 +6316,7 @@ static ushort AscInitMicroCodeVar(ASC_DVC_VAR *asc_dvc)
PortAddr iop_base;
ASC_PADDR phy_addr;
ASC_DCNT phy_size;
struct asc_board *board = asc_dvc_to_board(asc_dvc);
iop_base = asc_dvc->iop_base;
warn_code = 0;
@ -6330,12 +6331,14 @@ static ushort AscInitMicroCodeVar(ASC_DVC_VAR *asc_dvc)
AscWriteLramByte(iop_base, ASCV_HOSTSCSI_ID_B,
ASC_TID_TO_TARGET_ID(asc_dvc->cfg->chip_scsi_id));
/* Align overrun buffer on an 8 byte boundary. */
phy_addr = virt_to_bus(asc_dvc->cfg->overrun_buf);
phy_addr = cpu_to_le32((phy_addr + 7) & ~0x7);
/* Ensure overrun buffer is aligned on an 8 byte boundary. */
BUG_ON((unsigned long)asc_dvc->overrun_buf & 7);
asc_dvc->overrun_dma = dma_map_single(board->dev, asc_dvc->overrun_buf,
ASC_OVERRUN_BSIZE, DMA_FROM_DEVICE);
phy_addr = cpu_to_le32(asc_dvc->overrun_dma);
AscMemDWordCopyPtrToLram(iop_base, ASCV_OVERRUN_PADDR_D,
(uchar *)&phy_addr, 1);
phy_size = cpu_to_le32(ASC_OVERRUN_BSIZE - 8);
phy_size = cpu_to_le32(ASC_OVERRUN_BSIZE);
AscMemDWordCopyPtrToLram(iop_base, ASCV_OVERRUN_BSIZE_D,
(uchar *)&phy_size, 1);
@ -13404,7 +13407,6 @@ static int __devinit advansys_board_found(struct Scsi_Host *shost,
asc_dvc_varp->bus_type = bus_type;
asc_dvc_varp->drv_ptr = boardp;
asc_dvc_varp->cfg = &boardp->dvc_cfg.asc_dvc_cfg;
asc_dvc_varp->cfg->overrun_buf = &overrun_buf[0];
asc_dvc_varp->iop_base = iop;
} else {
#ifdef CONFIG_PCI
@ -13880,19 +13882,23 @@ static int __devinit advansys_board_found(struct Scsi_Host *shost,
*/
static int advansys_release(struct Scsi_Host *shost)
{
struct asc_board *boardp = shost_priv(shost);
struct asc_board *board = shost_priv(shost);
ASC_DBG(1, "begin\n");
scsi_remove_host(shost);
free_irq(boardp->irq, shost);
free_irq(board->irq, shost);
if (shost->dma_channel != NO_ISA_DMA) {
ASC_DBG(1, "free_dma()\n");
free_dma(shost->dma_channel);
}
if (!ASC_NARROW_BOARD(boardp)) {
iounmap(boardp->ioremap_addr);
advansys_wide_free_mem(boardp);
if (ASC_NARROW_BOARD(board)) {
dma_unmap_single(board->dev,
board->dvc_var.asc_dvc_var.overrun_dma,
ASC_OVERRUN_BSIZE, DMA_FROM_DEVICE);
} else {
iounmap(board->ioremap_addr);
advansys_wide_free_mem(board);
}
kfree(boardp->prtbuf);
kfree(board->prtbuf);
scsi_host_put(shost);
ASC_DBG(1, "end\n");
return 0;