Discussion:
[PATCH 1/2] ipr: Convert to generic DMA API
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Anton Blanchard
2014-10-13 09:14:35 UTC
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Raw Message
Even though the ipr driver is only used on PCI, convert it
to use the generic DMA API.

Signed-off-by: Anton Blanchard <***@samba.org>
---
drivers/scsi/ipr.c | 101 +++++++++++++++++++++++++++--------------------------
drivers/scsi/ipr.h | 2 +-
2 files changed, 53 insertions(+), 50 deletions(-)

diff --git a/drivers/scsi/ipr.c b/drivers/scsi/ipr.c
index 924b0ba..3aa28bd 100644
--- a/drivers/scsi/ipr.c
+++ b/drivers/scsi/ipr.c
@@ -3932,8 +3932,9 @@ static int ipr_update_ioa_ucode(struct ipr_ioa_cfg *ioa_cfg,
return -EIO;
}

- sglist->num_dma_sg = pci_map_sg(ioa_cfg->pdev, sglist->scatterlist,
- sglist->num_sg, DMA_TO_DEVICE);
+ sglist->num_dma_sg = dma_map_sg(&ioa_cfg->pdev->dev,
+ sglist->scatterlist, sglist->num_sg,
+ DMA_TO_DEVICE);

if (!sglist->num_dma_sg) {
spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
@@ -5575,7 +5576,7 @@ static int ipr_build_ioadl64(struct ipr_ioa_cfg *ioa_cfg,
nseg = scsi_dma_map(scsi_cmd);
if (nseg < 0) {
if (printk_ratelimit())
- dev_err(&ioa_cfg->pdev->dev, "pci_map_sg failed!\n");
+ dev_err(&ioa_cfg->pdev->dev, "scsi_dma_map failed!\n");
return -1;
}

@@ -5626,7 +5627,7 @@ static int ipr_build_ioadl(struct ipr_ioa_cfg *ioa_cfg,

nseg = scsi_dma_map(scsi_cmd);
if (nseg < 0) {
- dev_err(&ioa_cfg->pdev->dev, "pci_map_sg failed!\n");
+ dev_err(&ioa_cfg->pdev->dev, "scsi_dma_map failed!\n");
return -1;
}

@@ -8421,7 +8422,7 @@ static int ipr_reset_ucode_download_done(struct ipr_cmnd *ipr_cmd)
struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
struct ipr_sglist *sglist = ioa_cfg->ucode_sglist;

- pci_unmap_sg(ioa_cfg->pdev, sglist->scatterlist,
+ dma_unmap_sg(&ioa_cfg->pdev->dev, sglist->scatterlist,
sglist->num_sg, DMA_TO_DEVICE);

ipr_cmd->job_step = ipr_reset_alert;
@@ -8861,7 +8862,7 @@ static void ipr_free_cmd_blks(struct ipr_ioa_cfg *ioa_cfg)

for (i = 0; i < IPR_NUM_CMD_BLKS; i++) {
if (ioa_cfg->ipr_cmnd_list[i])
- pci_pool_free(ioa_cfg->ipr_cmd_pool,
+ dma_pool_free(ioa_cfg->ipr_cmd_pool,
ioa_cfg->ipr_cmnd_list[i],
ioa_cfg->ipr_cmnd_list_dma[i]);

@@ -8869,7 +8870,7 @@ static void ipr_free_cmd_blks(struct ipr_ioa_cfg *ioa_cfg)
}

if (ioa_cfg->ipr_cmd_pool)
- pci_pool_destroy(ioa_cfg->ipr_cmd_pool);
+ dma_pool_destroy(ioa_cfg->ipr_cmd_pool);

kfree(ioa_cfg->ipr_cmnd_list);
kfree(ioa_cfg->ipr_cmnd_list_dma);
@@ -8890,25 +8891,24 @@ static void ipr_free_mem(struct ipr_ioa_cfg *ioa_cfg)
int i;

kfree(ioa_cfg->res_entries);
- pci_free_consistent(ioa_cfg->pdev, sizeof(struct ipr_misc_cbs),
- ioa_cfg->vpd_cbs, ioa_cfg->vpd_cbs_dma);
+ dma_free_coherent(&ioa_cfg->pdev->dev, sizeof(struct ipr_misc_cbs),
+ ioa_cfg->vpd_cbs, ioa_cfg->vpd_cbs_dma);
ipr_free_cmd_blks(ioa_cfg);

for (i = 0; i < ioa_cfg->hrrq_num; i++)
- pci_free_consistent(ioa_cfg->pdev,
- sizeof(u32) * ioa_cfg->hrrq[i].size,
- ioa_cfg->hrrq[i].host_rrq,
- ioa_cfg->hrrq[i].host_rrq_dma);
+ dma_free_coherent(&ioa_cfg->pdev->dev,
+ sizeof(u32) * ioa_cfg->hrrq[i].size,
+ ioa_cfg->hrrq[i].host_rrq,
+ ioa_cfg->hrrq[i].host_rrq_dma);

- pci_free_consistent(ioa_cfg->pdev, ioa_cfg->cfg_table_size,
- ioa_cfg->u.cfg_table,
- ioa_cfg->cfg_table_dma);
+ dma_free_coherent(&ioa_cfg->pdev->dev, ioa_cfg->cfg_table_size,
+ ioa_cfg->u.cfg_table, ioa_cfg->cfg_table_dma);

for (i = 0; i < IPR_NUM_HCAMS; i++) {
- pci_free_consistent(ioa_cfg->pdev,
- sizeof(struct ipr_hostrcb),
- ioa_cfg->hostrcb[i],
- ioa_cfg->hostrcb_dma[i]);
+ dma_free_coherent(&ioa_cfg->pdev->dev,
+ sizeof(struct ipr_hostrcb),
+ ioa_cfg->hostrcb[i],
+ ioa_cfg->hostrcb_dma[i]);
}

ipr_free_dump(ioa_cfg);
@@ -8969,7 +8969,7 @@ static int ipr_alloc_cmd_blks(struct ipr_ioa_cfg *ioa_cfg)
dma_addr_t dma_addr;
int i, entries_each_hrrq, hrrq_id = 0;

- ioa_cfg->ipr_cmd_pool = pci_pool_create(IPR_NAME, ioa_cfg->pdev,
+ ioa_cfg->ipr_cmd_pool = dma_pool_create(IPR_NAME, &ioa_cfg->pdev->dev,
sizeof(struct ipr_cmnd), 512, 0);

if (!ioa_cfg->ipr_cmd_pool)
@@ -9019,7 +9019,7 @@ static int ipr_alloc_cmd_blks(struct ipr_ioa_cfg *ioa_cfg)
}

for (i = 0; i < IPR_NUM_CMD_BLKS; i++) {
- ipr_cmd = pci_pool_alloc(ioa_cfg->ipr_cmd_pool, GFP_KERNEL, &dma_addr);
+ ipr_cmd = dma_pool_alloc(ioa_cfg->ipr_cmd_pool, GFP_KERNEL, &dma_addr);

if (!ipr_cmd) {
ipr_free_cmd_blks(ioa_cfg);
@@ -9090,9 +9090,10 @@ static int ipr_alloc_mem(struct ipr_ioa_cfg *ioa_cfg)
ioa_cfg->res_entries[i].ioa_cfg = ioa_cfg;
}

- ioa_cfg->vpd_cbs = pci_alloc_consistent(ioa_cfg->pdev,
- sizeof(struct ipr_misc_cbs),
- &ioa_cfg->vpd_cbs_dma);
+ ioa_cfg->vpd_cbs = dma_alloc_coherent(&pdev->dev,
+ sizeof(struct ipr_misc_cbs),
+ &ioa_cfg->vpd_cbs_dma,
+ GFP_KERNEL);

if (!ioa_cfg->vpd_cbs)
goto out_free_res_entries;
@@ -9101,13 +9102,14 @@ static int ipr_alloc_mem(struct ipr_ioa_cfg *ioa_cfg)
goto out_free_vpd_cbs;

for (i = 0; i < ioa_cfg->hrrq_num; i++) {
- ioa_cfg->hrrq[i].host_rrq = pci_alloc_consistent(ioa_cfg->pdev,
+ ioa_cfg->hrrq[i].host_rrq = dma_alloc_coherent(&pdev->dev,
sizeof(u32) * ioa_cfg->hrrq[i].size,
- &ioa_cfg->hrrq[i].host_rrq_dma);
+ &ioa_cfg->hrrq[i].host_rrq_dma,
+ GFP_KERNEL);

if (!ioa_cfg->hrrq[i].host_rrq) {
while (--i > 0)
- pci_free_consistent(pdev,
+ dma_free_coherent(&pdev->dev,
sizeof(u32) * ioa_cfg->hrrq[i].size,
ioa_cfg->hrrq[i].host_rrq,
ioa_cfg->hrrq[i].host_rrq_dma);
@@ -9116,17 +9118,19 @@ static int ipr_alloc_mem(struct ipr_ioa_cfg *ioa_cfg)
ioa_cfg->hrrq[i].ioa_cfg = ioa_cfg;
}

- ioa_cfg->u.cfg_table = pci_alloc_consistent(ioa_cfg->pdev,
- ioa_cfg->cfg_table_size,
- &ioa_cfg->cfg_table_dma);
+ ioa_cfg->u.cfg_table = dma_alloc_coherent(&pdev->dev,
+ ioa_cfg->cfg_table_size,
+ &ioa_cfg->cfg_table_dma,
+ GFP_KERNEL);

if (!ioa_cfg->u.cfg_table)
goto out_free_host_rrq;

for (i = 0; i < IPR_NUM_HCAMS; i++) {
- ioa_cfg->hostrcb[i] = pci_alloc_consistent(ioa_cfg->pdev,
- sizeof(struct ipr_hostrcb),
- &ioa_cfg->hostrcb_dma[i]);
+ ioa_cfg->hostrcb[i] = dma_alloc_coherent(&pdev->dev,
+ sizeof(struct ipr_hostrcb),
+ &ioa_cfg->hostrcb_dma[i],
+ GFP_KERNEL);

if (!ioa_cfg->hostrcb[i])
goto out_free_hostrcb_dma;
@@ -9150,25 +9154,24 @@ out:

out_free_hostrcb_dma:
while (i-- > 0) {
- pci_free_consistent(pdev, sizeof(struct ipr_hostrcb),
- ioa_cfg->hostrcb[i],
- ioa_cfg->hostrcb_dma[i]);
+ dma_free_coherent(&pdev->dev, sizeof(struct ipr_hostrcb),
+ ioa_cfg->hostrcb[i],
+ ioa_cfg->hostrcb_dma[i]);
}
- pci_free_consistent(pdev, ioa_cfg->cfg_table_size,
- ioa_cfg->u.cfg_table,
- ioa_cfg->cfg_table_dma);
+ dma_free_coherent(&pdev->dev, ioa_cfg->cfg_table_size,
+ ioa_cfg->u.cfg_table, ioa_cfg->cfg_table_dma);
out_free_host_rrq:
for (i = 0; i < ioa_cfg->hrrq_num; i++) {
- pci_free_consistent(pdev,
- sizeof(u32) * ioa_cfg->hrrq[i].size,
- ioa_cfg->hrrq[i].host_rrq,
- ioa_cfg->hrrq[i].host_rrq_dma);
+ dma_free_coherent(&pdev->dev,
+ sizeof(u32) * ioa_cfg->hrrq[i].size,
+ ioa_cfg->hrrq[i].host_rrq,
+ ioa_cfg->hrrq[i].host_rrq_dma);
}
out_ipr_free_cmd_blocks:
ipr_free_cmd_blks(ioa_cfg);
out_free_vpd_cbs:
- pci_free_consistent(pdev, sizeof(struct ipr_misc_cbs),
- ioa_cfg->vpd_cbs, ioa_cfg->vpd_cbs_dma);
+ dma_free_coherent(&pdev->dev, sizeof(struct ipr_misc_cbs),
+ ioa_cfg->vpd_cbs, ioa_cfg->vpd_cbs_dma);
out_free_res_entries:
kfree(ioa_cfg->res_entries);
goto out;
@@ -9608,13 +9611,13 @@ static int ipr_probe_ioa(struct pci_dev *pdev,
ipr_init_regs(ioa_cfg);

if (ioa_cfg->sis64) {
- rc = pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
+ rc = dma_set_mask(&pdev->dev, DMA_BIT_MASK(64));
if (rc < 0) {
dev_dbg(&pdev->dev, "Failed to set 64 bit PCI DMA mask\n");
- rc = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
+ rc = dma_set_mask(&pdev->dev, DMA_BIT_MASK(32));
}
} else
- rc = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
+ rc = dma_set_mask(&pdev->dev, DMA_BIT_MASK(32));

if (rc < 0) {
dev_err(&pdev->dev, "Failed to set PCI DMA mask\n");
diff --git a/drivers/scsi/ipr.h b/drivers/scsi/ipr.h
index 31ed126..14f62c8 100644
--- a/drivers/scsi/ipr.h
+++ b/drivers/scsi/ipr.h
@@ -1548,7 +1548,7 @@ struct ipr_ioa_cfg {
struct ipr_misc_cbs *vpd_cbs;
dma_addr_t vpd_cbs_dma;

- struct pci_pool *ipr_cmd_pool;
+ struct dma_pool *ipr_cmd_pool;

struct ipr_cmnd *reset_cmd;
int (*reset) (struct ipr_cmnd *);
--
1.9.1

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Anton Blanchard
2014-10-13 09:14:36 UTC
Permalink
Raw Message
Use dma_set_mask_and_coherent() to set both the DMA and coherent
DMA mask.

Signed-off-by: Anton Blanchard <***@samba.org>
---
drivers/scsi/ipr.c | 11 ++++++-----
1 file changed, 6 insertions(+), 5 deletions(-)

diff --git a/drivers/scsi/ipr.c b/drivers/scsi/ipr.c
index 3aa28bd..15f4575 100644
--- a/drivers/scsi/ipr.c
+++ b/drivers/scsi/ipr.c
@@ -9611,16 +9611,17 @@ static int ipr_probe_ioa(struct pci_dev *pdev,
ipr_init_regs(ioa_cfg);

if (ioa_cfg->sis64) {
- rc = dma_set_mask(&pdev->dev, DMA_BIT_MASK(64));
+ rc = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
if (rc < 0) {
- dev_dbg(&pdev->dev, "Failed to set 64 bit PCI DMA mask\n");
- rc = dma_set_mask(&pdev->dev, DMA_BIT_MASK(32));
+ dev_dbg(&pdev->dev, "Failed to set 64 bit DMA mask\n");
+ rc = dma_set_mask_and_coherent(&pdev->dev,
+ DMA_BIT_MASK(32));
}
} else
- rc = dma_set_mask(&pdev->dev, DMA_BIT_MASK(32));
+ rc = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));

if (rc < 0) {
- dev_err(&pdev->dev, "Failed to set PCI DMA mask\n");
+ dev_err(&pdev->dev, "Failed to set DMA mask\n");
goto cleanup_nomem;
}
--
1.9.1

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Christoph Hellwig
2014-10-21 10:59:16 UTC
Permalink
Raw Message
Wendy, Brian,

can you give me an ACK for this series?

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