提交 e454358a 编写于 作者: B Brice Goglin 提交者: Jeff Garzik

[PATCH] myri10ge - Write the firmware in 256-bytes chunks

When writing the firmware to the NIC, the FIFO is 256-bytes long,
so we use 256-bytes chunks and a read to wait until the previous
write is done.
Signed-off-by: NBrice Goglin <brice@myri.com>
Signed-off-by: NJeff Garzik <jeff@garzik.org>
上级 817acf5e
......@@ -448,6 +448,7 @@ static int myri10ge_load_hotplug_firmware(struct myri10ge_priv *mgp, u32 * size)
struct mcp_gen_header *hdr;
size_t hdr_offset;
int status;
unsigned i;
if ((status = request_firmware(&fw, mgp->fw_name, dev)) < 0) {
dev_err(dev, "Unable to load %s firmware image via hotplug\n",
......@@ -479,18 +480,12 @@ static int myri10ge_load_hotplug_firmware(struct myri10ge_priv *mgp, u32 * size)
goto abort_with_fw;
crc = crc32(~0, fw->data, fw->size);
if (mgp->tx.boundary == 2048) {
/* Avoid PCI burst on chipset with unaligned completions. */
int i;
__iomem u32 *ptr = (__iomem u32 *) (mgp->sram +
MYRI10GE_FW_OFFSET);
for (i = 0; i < fw->size / 4; i++) {
__raw_writel(((u32 *) fw->data)[i], ptr + i);
wmb();
}
} else {
myri10ge_pio_copy(mgp->sram + MYRI10GE_FW_OFFSET, fw->data,
fw->size);
for (i = 0; i < fw->size; i += 256) {
myri10ge_pio_copy(mgp->sram + MYRI10GE_FW_OFFSET + i,
fw->data + i,
min(256U, (unsigned)(fw->size - i)));
mb();
readb(mgp->sram);
}
/* corruption checking is good for parity recovery and buggy chipset */
memcpy_fromio(fw->data, mgp->sram + MYRI10GE_FW_OFFSET, fw->size);
......
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