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qcacmn: Add QDF WAR for x86 to allocate consistent memory from high mem

Browse source 
Add a WAR to ensure consistent memory allocation is
above 0x50000000 region for x86 builds for Lithium

CRs-Fixed: 1112381
Change-Id: If9e05f9d4ba05676d66e065d663a268058f0c110
This commit is contained in:
Vijay Pamidipati 2016-11-09 11:10:39 +05:30 • committed by qcabuildsw
commit 28285a0ac7
1 changed files with 32 additions and 0 deletions
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32
qdf/linux/src/qdf_mem.c
View file

@ -1454,6 +1454,38 @@ void *qdf_mem_alloc_consistent(qdf_device_t osdev, void *dev, qdf_size_t size,
return vaddr;
}
#elif defined(QCA_WIFI_QCA8074) && defined(BUILD_X86)
#define QCA8074_RAM_BASE 0x50000000
#define QDF_MEM_ALLOC_X86_MAX_RETRIES 10
void *qdf_mem_alloc_consistent(qdf_device_t osdev, void *dev, qdf_size_t size,
qdf_dma_addr_t *phy_addr)
{
int flags = GFP_KERNEL;
void *alloc_mem = NULL;
int alloc_try_high_mem = 0;
if (in_interrupt() || irqs_disabled() || in_atomic())
flags = GFP_ATOMIC;
*phy_addr = 0;
while (alloc_try_high_mem++ < QDF_MEM_ALLOC_X86_MAX_RETRIES) {
alloc_mem = dma_alloc_coherent(dev, size, phy_addr, flags);
if (alloc_mem == NULL) {
qdf_print("%s failed , size: %zu!\n", __func__, size);
return NULL;
}
if (*phy_addr < QCA8074_RAM_BASE) {
dma_free_coherent(dev, size, alloc_mem, *phy_addr);
alloc_mem = NULL;
} else
break;
}
return alloc_mem;
}
#else
void *qdf_mem_alloc_consistent(qdf_device_t osdev, void *dev, qdf_size_t size,
qdf_dma_addr_t *phy_addr)