diff options
| author | Kalle Valo <kalle.valo@nokia.com> | 2009-11-17 18:48:45 +0200 |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2009-11-18 17:09:20 -0500 |
| commit | c74ddfd5ea9c0c67d0aae77eeb5b610188cb8bc4 (patch) | |
| tree | 83b9b65950079b8c4d1ee1428009fa4832791fd8 /drivers/net/wireless/wl12xx/wl1251_boot.c | |
| parent | d5da79ac1f5050cccaa68d814ccce292371f25fa (diff) | |
wl1251: allocate space for firmware with vmalloc()
Earlier firmware was stored to a memory area allocated with kmalloc()
but finding a a contiguous area of memory long enough for the firmware is
very difficult in certain cases. better to allocate the memory for firmware
with vmalloc() instead and use a small buffer for DMA transfers.
Thanks to Eero Tamminen for the idea.
Signed-off-by: Kalle Valo <kalle.valo@nokia.com>
Reviewed-by: Vidhya Govindan <vidhya.govindan@nokia.com>
Signed-off-by: Luciano Coelho <luciano.coelho@nokia.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'drivers/net/wireless/wl12xx/wl1251_boot.c')
| -rw-r--r-- | drivers/net/wireless/wl12xx/wl1251_boot.c | 27 |
1 files changed, 22 insertions, 5 deletions
diff --git a/drivers/net/wireless/wl12xx/wl1251_boot.c b/drivers/net/wireless/wl12xx/wl1251_boot.c index 452d748e42c..8febf27ab28 100644 --- a/drivers/net/wireless/wl12xx/wl1251_boot.c +++ b/drivers/net/wireless/wl12xx/wl1251_boot.c @@ -314,8 +314,8 @@ int wl1251_boot_run_firmware(struct wl1251 *wl) static int wl1251_boot_upload_firmware(struct wl1251 *wl) { int addr, chunk_num, partition_limit; - size_t fw_data_len; - u8 *p; + size_t fw_data_len, len; + u8 *p, *buf; /* whal_FwCtrl_LoadFwImageSm() */ @@ -334,6 +334,12 @@ static int wl1251_boot_upload_firmware(struct wl1251 *wl) return -EIO; } + buf = kmalloc(CHUNK_SIZE, GFP_KERNEL); + if (!buf) { + wl1251_error("allocation for firmware upload chunk failed"); + return -ENOMEM; + } + wl1251_set_partition(wl, WL1251_PART_DOWN_MEM_START, WL1251_PART_DOWN_MEM_SIZE, WL1251_PART_DOWN_REG_START, @@ -364,7 +370,11 @@ static int wl1251_boot_upload_firmware(struct wl1251 *wl) p = wl->fw + FW_HDR_SIZE + chunk_num * CHUNK_SIZE; wl1251_debug(DEBUG_BOOT, "uploading fw chunk 0x%p to 0x%x", p, addr); - wl1251_mem_write(wl, addr, p, CHUNK_SIZE); + + /* need to copy the chunk for dma */ + len = CHUNK_SIZE; + memcpy(buf, p, len); + wl1251_mem_write(wl, addr, buf, len); chunk_num++; } @@ -372,9 +382,16 @@ static int wl1251_boot_upload_firmware(struct wl1251 *wl) /* 10.4 upload the last chunk */ addr = WL1251_PART_DOWN_MEM_START + chunk_num * CHUNK_SIZE; p = wl->fw + FW_HDR_SIZE + chunk_num * CHUNK_SIZE; + + /* need to copy the chunk for dma */ + len = fw_data_len % CHUNK_SIZE; + memcpy(buf, p, len); + wl1251_debug(DEBUG_BOOT, "uploading fw last chunk (%zu B) 0x%p to 0x%x", - fw_data_len % CHUNK_SIZE, p, addr); - wl1251_mem_write(wl, addr, p, fw_data_len % CHUNK_SIZE); + len, p, addr); + wl1251_mem_write(wl, addr, buf, len); + + kfree(buf); return 0; } |