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advansys: Use DMA-API for mapping request blocks 

Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: James Bottomley <JBottomley@Odin.com>
This commit is contained in:
Hannes Reinecke 2015-04-24 13:18:24 +02:00 committed by James Bottomley
parent 98b96a7d99
commit 4b47e46451
1 changed files with 54 additions and 54 deletions
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108
drivers/scsi/advansys.c
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@ -1894,11 +1894,11 @@ typedef struct adv_sgblk {
typedef struct adv_req {
ADV_SCSI_REQ_Q scsi_req_q; /* Adv Library request structure. */
uchar align[32]; /* Request structure padding. */
uchar align[24]; /* Request structure padding. */
struct scsi_cmnd *cmndp; /* Mid-Level SCSI command pointer. */
dma_addr_t req_addr;
adv_sgblk_t *sgblkp; /* Adv Library scatter-gather pointer. */
struct adv_req *next_reqp; /* Next Request Structure. */
} adv_req_t;
} adv_req_t __aligned(32);
/*
* Adapter operation variable structure.
@ -2379,6 +2379,8 @@ struct asc_board {
void __iomem *ioremap_addr; /* I/O Memory remap address. */
ushort ioport; /* I/O Port address. */
adv_req_t *adv_reqp; /* Request structures. */
dma_addr_t adv_reqp_addr;
size_t adv_reqp_size;
adv_sgblk_t *adv_sgblkp; /* Scatter-gather structures. */
ushort bios_signature; /* BIOS Signature. */
ushort bios_version; /* BIOS Version. */
@ -4383,6 +4385,17 @@ static ADV_CARR_T *adv_get_next_carrier(struct adv_dvc_var *adv_dvc)
return carrp;
}
/*
* 'offset' is the index in the request pointer array
*/
static adv_req_t * adv_get_reqp(struct adv_dvc_var *adv_dvc, u32 offset)
{
struct asc_board *boardp = adv_dvc->drv_ptr;
BUG_ON(offset > adv_dvc->max_host_qng);
return &boardp->adv_reqp[offset];
}
/*
* Send an idle command to the chip and wait for completion.
*
@ -6229,6 +6242,7 @@ static int AdvISR(ADV_DVC_VAR *asc_dvc)
ADV_CARR_T *free_carrp;
ADV_VADDR irq_next_vpa;
ADV_SCSI_REQ_Q *scsiq;
adv_req_t *reqp;
iop_base = asc_dvc->iop_base;
@ -6281,8 +6295,11 @@ static int AdvISR(ADV_DVC_VAR *asc_dvc)
* below complements the conversion of ASC_SCSI_REQ_Q.scsiq_ptr'
* in AdvExeScsiQueue().
*/
scsiq = (ADV_SCSI_REQ_Q *)
ADV_U32_TO_VADDR(le32_to_cpu(asc_dvc->irq_sp->areq_vpa));
u32 pa_offset = le32_to_cpu(asc_dvc->irq_sp->areq_vpa);
ASC_DBG(1, "irq_sp %p areq_vpa %u\n",
asc_dvc->irq_sp, pa_offset);
reqp = adv_get_reqp(asc_dvc, pa_offset);
scsiq = &reqp->scsi_req_q;
/*
* Request finished with good status and the queue was not
@ -7883,18 +7900,16 @@ static int asc_build_req(struct asc_board *boardp, struct scsi_cmnd *scp,
* ADV_ERROR(-1) - SG List creation failed
*/
static int
adv_get_sglist(struct asc_board *boardp, adv_req_t *reqp, struct scsi_cmnd *scp,
int use_sg)
adv_get_sglist(struct asc_board *boardp, adv_req_t *reqp,
ADV_SCSI_REQ_Q *scsiqp, struct scsi_cmnd *scp, int use_sg)
{
adv_sgblk_t *sgblkp;
ADV_SCSI_REQ_Q *scsiqp;
struct scatterlist *slp;
int sg_elem_cnt;
ADV_SG_BLOCK *sg_block, *prev_sg_block;
ADV_PADDR sg_block_paddr;
int i;
scsiqp = (ADV_SCSI_REQ_Q *)ADV_32BALIGN(&reqp->scsi_req_q);
slp = scsi_sglist(scp);
sg_elem_cnt = use_sg;
prev_sg_block = NULL;
@ -7994,7 +8009,7 @@ adv_get_sglist(struct asc_board *boardp, adv_req_t *reqp, struct scsi_cmnd *scp,
*/
static int
adv_build_req(struct asc_board *boardp, struct scsi_cmnd *scp,
ADV_SCSI_REQ_Q **adv_scsiqpp)
adv_req_t **adv_reqpp)
{
u32 srb_tag = scp->request->tag;
adv_req_t *reqp;
@ -8014,10 +8029,9 @@ adv_build_req(struct asc_board *boardp, struct scsi_cmnd *scp,
return ASC_BUSY;
}
/*
* Get 32-byte aligned ADV_SCSI_REQ_Q and ADV_SG_BLOCK pointers.
*/
scsiqp = (ADV_SCSI_REQ_Q *)ADV_32BALIGN(&reqp->scsi_req_q);
reqp->req_addr = boardp->adv_reqp_addr + (srb_tag * sizeof(adv_req_t));
scsiqp = &reqp->scsi_req_q;
/*
* Initialize the structure.
@ -8030,7 +8044,7 @@ adv_build_req(struct asc_board *boardp, struct scsi_cmnd *scp,
scsiqp->srb_tag = srb_tag;
/*
* Set the adv_req_t 'cmndp' to point to the struct scsi_cmnd structure.
* Set 'host_scribble' to point to the adv_req_t structure.
*/
reqp->cmndp = scp;
scp->host_scribble = (void *)reqp;
@ -8084,7 +8098,7 @@ adv_build_req(struct asc_board *boardp, struct scsi_cmnd *scp,
scsiqp->data_cnt = cpu_to_le32(scsi_bufflen(scp));
ret = adv_get_sglist(boardp, reqp, scp, use_sg);
ret = adv_get_sglist(boardp, reqp, scsiqp, scp, use_sg);
if (ret != ADV_SUCCESS) {
scsi_dma_unmap(scp);
scp->result = HOST_BYTE(DID_ERROR);
@ -8102,7 +8116,7 @@ adv_build_req(struct asc_board *boardp, struct scsi_cmnd *scp,
ASC_DBG_PRT_ADV_SCSI_REQ_Q(2, scsiqp);
ASC_DBG_PRT_CDB(1, scp->cmnd, scp->cmd_len);
*adv_scsiqpp = scsiqp;
*adv_reqpp = reqp;
return ASC_NOERROR;
}
@ -8692,11 +8706,11 @@ static int AscExeScsiQueue(ASC_DVC_VAR *asc_dvc, ASC_SCSI_Q *scsiq)
* ADV_ERROR(-1) - Invalid ADV_SCSI_REQ_Q request structure
* host IC error.
*/
static int AdvExeScsiQueue(ADV_DVC_VAR *asc_dvc, ADV_SCSI_REQ_Q *scsiq)
static int AdvExeScsiQueue(ADV_DVC_VAR *asc_dvc, adv_req_t *reqp)
{
AdvPortAddr iop_base;
ADV_PADDR req_paddr;
ADV_CARR_T *new_carrp;
ADV_SCSI_REQ_Q *scsiq = &reqp->scsi_req_q;
/*
* The ADV_SCSI_REQ_Q 'target_id' field should never exceed ADV_MAX_TID.
@ -8726,14 +8740,9 @@ static int AdvExeScsiQueue(ADV_DVC_VAR *asc_dvc, ADV_SCSI_REQ_Q *scsiq)
*/
scsiq->a_flag &= ~ADV_SCSIQ_DONE;
req_paddr = virt_to_bus(scsiq);
BUG_ON(req_paddr & 31);
/* Wait for assertion before making little-endian */
req_paddr = cpu_to_le32(req_paddr);
/* Save virtual and physical address of ADV_SCSI_REQ_Q and carrier. */
scsiq->scsiq_ptr = cpu_to_le32(ADV_VADDR_TO_U32(scsiq));
scsiq->scsiq_rptr = req_paddr;
scsiq->scsiq_ptr = cpu_to_le32(scsiq->srb_tag);
scsiq->scsiq_rptr = cpu_to_le32(reqp->req_addr);
scsiq->carr_va = asc_dvc->icq_sp->carr_va;
scsiq->carr_pa = asc_dvc->icq_sp->carr_pa;
@ -8743,7 +8752,7 @@ static int AdvExeScsiQueue(ADV_DVC_VAR *asc_dvc, ADV_SCSI_REQ_Q *scsiq)
* the microcode. The newly allocated stopper will become the new
* stopper.
*/
asc_dvc->icq_sp->areq_vpa = req_paddr;
asc_dvc->icq_sp->areq_vpa = scsiq->scsiq_rptr;
/*
* Set the 'next_vpa' pointer for the old stopper to be the
@ -8810,9 +8819,9 @@ static int asc_execute_scsi_cmnd(struct scsi_cmnd *scp)
err_code = asc_dvc->err_code;
} else {
ADV_DVC_VAR *adv_dvc = &boardp->dvc_var.adv_dvc_var;
ADV_SCSI_REQ_Q *adv_scsiqp;
adv_req_t *adv_reqp;
switch (adv_build_req(boardp, scp, &adv_scsiqp)) {
switch (adv_build_req(boardp, scp, &adv_reqp)) {
case ASC_NOERROR:
ASC_DBG(3, "adv_build_req ASC_NOERROR\n");
break;
@ -8832,7 +8841,7 @@ static int asc_execute_scsi_cmnd(struct scsi_cmnd *scp)
return ASC_ERROR;
}
ret = AdvExeScsiQueue(adv_dvc, adv_scsiqp);
ret = AdvExeScsiQueue(adv_dvc, adv_reqp);
err_code = adv_dvc->err_code;
}
@ -8847,6 +8856,7 @@ static int asc_execute_scsi_cmnd(struct scsi_cmnd *scp)
ASC_DBG(1, "ExeScsiQueue() ASC_NOERROR\n");
break;
case ASC_BUSY:
ASC_DBG(1, "ExeScsiQueue() ASC_BUSY\n");
ASC_STATS(scp->device->host, exe_busy);
break;
case ASC_ERROR:
@ -11147,8 +11157,6 @@ static int advansys_wide_init_chip(struct Scsi_Host *shost)
{
struct asc_board *board = shost_priv(shost);
struct adv_dvc_var *adv_dvc = &board->dvc_var.adv_dvc_var;
int req_cnt = 0;
adv_req_t *reqp = NULL;
int sg_cnt = 0;
adv_sgblk_t *sgp;
int warn_code, err_code;
@ -11169,20 +11177,19 @@ static int advansys_wide_init_chip(struct Scsi_Host *shost)
* board. The total size is about 16 KB, so allocate all at once.
* If the allocation fails decrement and try again.
*/
for (req_cnt = adv_dvc->max_host_qng; req_cnt > 0; req_cnt--) {
reqp = kzalloc(sizeof(adv_req_t) * req_cnt, GFP_KERNEL);
ASC_DBG(1, "reqp 0x%p, req_cnt %d, bytes %lu\n", reqp, req_cnt,
(ulong)sizeof(adv_req_t) * req_cnt);
if (reqp)
break;
board->adv_reqp_size = adv_dvc->max_host_qng * sizeof(adv_req_t);
if (board->adv_reqp_size & 0x1f) {
ASC_DBG(1, "unaligned reqp %lu bytes\n", sizeof(adv_req_t));
board->adv_reqp_size = ADV_32BALIGN(board->adv_reqp_size);
}
board->adv_reqp = dma_alloc_coherent(board->dev, board->adv_reqp_size,
&board->adv_reqp_addr, GFP_KERNEL);
if (!reqp)
if (!board->adv_reqp)
goto kmalloc_failed;
board->adv_reqp = reqp;
ASC_DBG(1, "reqp 0x%p, req_cnt %d, bytes %lu\n", board->adv_reqp,
adv_dvc->max_host_qng, board->adv_reqp_size);
/*
* Allocate up to ADV_TOT_SG_BLOCK request structures for
@ -11206,16 +11213,6 @@ static int advansys_wide_init_chip(struct Scsi_Host *shost)
if (!board->adv_sgblkp)
goto kmalloc_failed;
/*
* Point 'adv_reqp' to the request structures and
* link them together.
*/
req_cnt--;
reqp[req_cnt].next_reqp = NULL;
for (; req_cnt > 0; req_cnt--) {
reqp[req_cnt - 1].next_reqp = &reqp[req_cnt];
}
if (adv_dvc->chip_type == ADV_CHIP_ASC3550) {
ASC_DBG(2, "AdvInitAsc3550Driver()\n");
warn_code = AdvInitAsc3550Driver(adv_dvc);
@ -11251,8 +11248,11 @@ static void advansys_wide_free_mem(struct asc_board *board)
adv_dvc->carrier, adv_dvc->carrier_addr);
adv_dvc->carrier = NULL;
}
kfree(board->adv_reqp);
board->adv_reqp = NULL;
if (board->adv_reqp) {
dma_free_coherent(board->dev, board->adv_reqp_size,
board->adv_reqp, board->adv_reqp_addr);
board->adv_reqp = NULL;
}
while (board->adv_sgblkp) {
adv_sgblk_t *sgp = board->adv_sgblkp;
board->adv_sgblkp = sgp->next_sgblkp;