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

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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: Brice Goglin <brice@myri.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
This commit is contained in:
Brice Goglin 2006-07-30 00:14:09 -04:00 committed by Jeff Garzik
parent 817acf5ebd
commit e454358ace
1 changed files with 7 additions and 12 deletions
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19
drivers/net/myri10ge/myri10ge.c
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@ -448,6 +448,7 @@ static int myri10ge_load_hotplug_firmware(struct myri10ge_priv *mgp, u32 * size)
struct mcp_gen_header *hdr; struct mcp_gen_header *hdr;
size_t hdr_offset; size_t hdr_offset;
int status; int status;
unsigned i;
if ((status = request_firmware(&fw, mgp->fw_name, dev)) < 0) { if ((status = request_firmware(&fw, mgp->fw_name, dev)) < 0) {
dev_err(dev, "Unable to load %s firmware image via hotplug\n", 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; goto abort_with_fw;
crc = crc32(~0, fw->data, fw->size); crc = crc32(~0, fw->data, fw->size);
if (mgp->tx.boundary == 2048) { for (i = 0; i < fw->size; i += 256) {
/* Avoid PCI burst on chipset with unaligned completions. */ myri10ge_pio_copy(mgp->sram + MYRI10GE_FW_OFFSET + i,
int i; fw->data + i,
__iomem u32 *ptr = (__iomem u32 *) (mgp->sram + min(256U, (unsigned)(fw->size - i)));
MYRI10GE_FW_OFFSET); mb();
for (i = 0; i < fw->size / 4; i++) { readb(mgp->sram);
__raw_writel(((u32 *) fw->data)[i], ptr + i);
wmb();
}
} else {
myri10ge_pio_copy(mgp->sram + MYRI10GE_FW_OFFSET, fw->data,
fw->size);
} }
/* corruption checking is good for parity recovery and buggy chipset */ /* corruption checking is good for parity recovery and buggy chipset */
memcpy_fromio(fw->data, mgp->sram + MYRI10GE_FW_OFFSET, fw->size); memcpy_fromio(fw->data, mgp->sram + MYRI10GE_FW_OFFSET, fw->size);