openwrt_archive/package/kernel/broadcom-wl/patches/006-generic-dma-api.patch
Hauke Mehrtens d254a87c0c broadcom-wl: assign first increased mac address to internal wifi core
When the original mac addresses are not valid assign the first one to 
the internal wifi core, this matches the manufacture mac address in 
most cases. In addition refresh the patches.

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>


SVN-Revision: 41545
2014-07-07 17:38:54 +00:00

89 lines
2.7 KiB
Diff

From: George Kashperko <george@znau.edu.ua>
broadcom-wl driver bound to ssb device with ssb driver probe
have osh handle struct pdev pointer value initialized with
ssb_device pointer. Later on pdev is used with legacy pci
dma api as pci_dev thus causing oops sometimes.
The patch replaces legacy pci dma api and pass relevant
device struct pointer to avoid crashes.
Signed-off-by: George Kashperko <george@znau.edu.ua>
---
driver/linux_osl.c | 28 +++++++++++++++++++++++-----
1 file changed, 23 insertions(+), 5 deletions(-)
--- a/driver/linux_osl.c
+++ b/driver/linux_osl.c
@@ -25,6 +25,9 @@
#include <asm/paccess.h>
#endif /* mips */
#include <pcicfg.h>
+#ifdef CONFIG_SSB
+#include <linux/ssb/ssb.h>
+#endif
#define PCI_CFG_RETRY 10
@@ -364,12 +367,27 @@ osl_dma_consistent_align(void)
return (PAGE_SIZE);
}
+static struct device *
+osl_get_dmadev(osl_t *osh)
+{
+#ifdef CONFIG_SSB
+ if (osh->bustype == SI_BUS) {
+ /* This can be SiliconBackplane emulated as pci with Broadcom or
+ * ssb device. Less harmful is to check for pci_bus_type and if
+ * no match then assume we got ssb */
+ if (((struct pci_dev *)osh->pdev)->dev.bus != &pci_bus_type)
+ return ((struct ssb_device *)osh->pdev)->dma_dev;
+ }
+#endif
+ return &((struct pci_dev *)osh->pdev)->dev;
+}
+
void*
osl_dma_alloc_consistent(osl_t *osh, uint size, ulong *pap)
{
ASSERT((osh && (osh->magic == OS_HANDLE_MAGIC)));
- return (pci_alloc_consistent(osh->pdev, size, (dma_addr_t*)pap));
+ return (dma_alloc_coherent(osl_get_dmadev(osh), size, (dma_addr_t*)pap, GFP_ATOMIC));
}
void
@@ -377,7 +395,7 @@ osl_dma_free_consistent(osl_t *osh, void
{
ASSERT((osh && (osh->magic == OS_HANDLE_MAGIC)));
- pci_free_consistent(osh->pdev, size, va, (dma_addr_t)pa);
+ dma_free_coherent(osl_get_dmadev(osh), size, va, (dma_addr_t)pa);
}
uint BCMFASTPATH
@@ -386,13 +404,13 @@ osl_dma_map(osl_t *osh, void *va, uint s
ASSERT((osh && (osh->magic == OS_HANDLE_MAGIC)));
if (direction == DMA_TX)
- return (pci_map_single(osh->pdev, va, size, PCI_DMA_TODEVICE));
+ return (dma_map_single(osl_get_dmadev(osh), va, size, PCI_DMA_TODEVICE));
else {
#ifdef mips
dma_cache_inv((uint)va, size);
return (virt_to_phys(va));
#else /* mips */
- return (pci_map_single(osh->pdev, va, size, PCI_DMA_FROMDEVICE));
+ return (dma_map_single(osl_get_dmadev(osh), va, size, PCI_DMA_FROMDEVICE));
#endif /* mips */
}
}
@@ -404,7 +422,7 @@ osl_dma_unmap(osl_t *osh, uint pa, uint
ASSERT((osh && (osh->magic == OS_HANDLE_MAGIC)));
dir = (direction == DMA_TX)? PCI_DMA_TODEVICE: PCI_DMA_FROMDEVICE;
- pci_unmap_single(osh->pdev, (uint32)pa, size, dir);
+ dma_unmap_single(osl_get_dmadev(osh), (uint32)pa, size, dir);
}