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wil6210: support 40bit DMA addresses

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Add the option to support 40bit addresses since some platforms
may not support 48bits but support 40bits

Signed-off-by: Lazar Alexei <qca_ailizaro@qca.qualcomm.com>
Signed-off-by: Maya Erez <qca_merez@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
This commit is contained in:
Lazar Alexei 2017-12-14 18:53:06 +02:00 committed by Kalle Valo
parent a5dc688392
commit 3dc2c13b52
4 changed files with 28 additions and 22 deletions
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26
drivers/net/wireless/ath/wil6210/pcie_bus.c
View File

@ -204,6 +204,8 @@ static int wil_pcie_probe(struct pci_dev *pdev, const struct pci_device_id *id)
.fw_recovery = wil_platform_rop_fw_recovery,
};
u32 bar_size = pci_resource_len(pdev, 0);
int dma_addr_size[] = {48, 40, 32}; /* keep descending order */
int i;
/* check HW */
dev_info(&pdev->dev, WIL_NAME
@ -239,21 +241,23 @@ static int wil_pcie_probe(struct pci_dev *pdev, const struct pci_device_id *id)
}
/* rollback to err_plat */
/* device supports 48bit addresses */
rc = dma_set_mask_and_coherent(dev, DMA_BIT_MASK(48));
if (rc) {
dev_err(dev, "dma_set_mask_and_coherent(48) failed: %d\n", rc);
rc = dma_set_mask_and_coherent(dev, DMA_BIT_MASK(32));
/* device supports >32bit addresses */
for (i = 0; i < ARRAY_SIZE(dma_addr_size); i++) {
rc = dma_set_mask_and_coherent(dev,
DMA_BIT_MASK(dma_addr_size[i]));
if (rc) {
dev_err(dev,
"dma_set_mask_and_coherent(32) failed: %d\n",
rc);
goto err_plat;
dev_err(dev, "dma_set_mask_and_coherent(%d) failed: %d\n",
dma_addr_size[i], rc);
continue;
}
} else {
wil->use_extended_dma_addr = 1;
dev_info(dev, "using dma mask %d", dma_addr_size[i]);
wil->dma_addr_size = dma_addr_size[i];
break;
}
if (wil->dma_addr_size == 0)
goto err_plat;
rc = pci_enable_device(pdev);
if (rc && pdev->msi_enabled == 0) {
wil_err(wil,

11
drivers/net/wireless/ath/wil6210/pmc.c
View File

@ -111,14 +111,14 @@ void wil_pmc_alloc(struct wil6210_priv *wil,
*
* HW has limitation that all vrings addresses must share the same
* upper 16 msb bits part of 48 bits address. To workaround that,
* if we are using 48 bit addresses switch to 32 bit allocation
* before allocating vring memory.
* if we are using more than 32 bit addresses switch to 32 bit
* allocation before allocating vring memory.
*
* There's no check for the return value of dma_set_mask_and_coherent,
* since we assume if we were able to set the mask during
* initialization in this system it will not fail if we set it again
*/
if (wil->use_extended_dma_addr)
if (wil->dma_addr_size > 32)
dma_set_mask_and_coherent(dev, DMA_BIT_MASK(32));
pmc->pring_va = dma_alloc_coherent(dev,
@ -126,8 +126,9 @@ void wil_pmc_alloc(struct wil6210_priv *wil,
&pmc->pring_pa,
GFP_KERNEL);
if (wil->use_extended_dma_addr)
dma_set_mask_and_coherent(dev, DMA_BIT_MASK(48));
if (wil->dma_addr_size > 32)
dma_set_mask_and_coherent(dev,
DMA_BIT_MASK(wil->dma_addr_size));
wil_dbg_misc(wil,
"pmc_alloc: allocated pring %p => %pad. %zd x %d = total %zd bytes\n",

11
drivers/net/wireless/ath/wil6210/txrx.c
View File

@ -178,14 +178,14 @@ static int wil_vring_alloc(struct wil6210_priv *wil, struct vring *vring)
*
* HW has limitation that all vrings addresses must share the same
* upper 16 msb bits part of 48 bits address. To workaround that,
* if we are using 48 bit addresses switch to 32 bit allocation
* before allocating vring memory.
* if we are using more than 32 bit addresses switch to 32 bit
* allocation before allocating vring memory.
*
* There's no check for the return value of dma_set_mask_and_coherent,
* since we assume if we were able to set the mask during
* initialization in this system it will not fail if we set it again
*/
if (wil->use_extended_dma_addr)
if (wil->dma_addr_size > 32)
dma_set_mask_and_coherent(dev, DMA_BIT_MASK(32));
vring->va = dma_alloc_coherent(dev, sz, &vring->pa, GFP_KERNEL);
@ -195,8 +195,9 @@ static int wil_vring_alloc(struct wil6210_priv *wil, struct vring *vring)
return -ENOMEM;
}
if (wil->use_extended_dma_addr)
dma_set_mask_and_coherent(dev, DMA_BIT_MASK(48));
if (wil->dma_addr_size > 32)
dma_set_mask_and_coherent(dev,
DMA_BIT_MASK(wil->dma_addr_size));
/* initially, all descriptors are SW owned
* For Tx and Rx, ownership bit is at the same location, thus

2
drivers/net/wireless/ath/wil6210/wil6210.h
View File

@ -704,7 +704,7 @@ struct wil6210_priv {
struct wil_sta_info sta[WIL6210_MAX_CID];
int bcast_vring;
u32 vring_idle_trsh; /* HW fetches up to 16 descriptors at once */
bool use_extended_dma_addr; /* indicates whether we are using 48 bits */
u32 dma_addr_size; /* indicates dma addr size */
/* scan */
struct cfg80211_scan_request *scan_request;