static int emi26_set_reset (struct usb_device *dev, unsigned char reset_bit)
{
int response;
dev_info(&dev->dev, "%s - %d\n", __func__, reset_bit);
response = emi26_writememory (dev, CPUCS_REG, &reset_bit, 1, 0xa0);
if (response < 0) {
dev_err(&dev->dev, "set_reset (%d) failed\n", reset_bit);
}
return response;
}
/* thanks to drivers/usb/serial/keyspan_pda.c code */
static int emi26_set_reset (struct usb_device *dev, unsigned char reset_bit)
{
int response;
info("%s - %d", __FUNCTION__, reset_bit);
/* printk(KERN_DEBUG "%s - %d", __FUNCTION__, reset_bit); */
response = emi26_writememory (dev, CPUCS_REG, &reset_bit, 1, 0xa0);
if (response < 0) {
err("emi26: set_reset (%d) failed", reset_bit);
}
return response;
}
static int emi26_load_firmware (struct usb_device *dev)
{
const struct firmware *loader_fw = NULL;
const struct firmware *bitstream_fw = NULL;
const struct firmware *firmware_fw = NULL;
const struct ihex_binrec *rec;
int err;
int i;
__u32 addr;
__u8 *buf;
buf = kmalloc(FW_LOAD_SIZE, GFP_KERNEL);
if (!buf) {
dev_err(&dev->dev, "%s - error loading firmware: error = %d\n",
__func__, -ENOMEM);
err = -ENOMEM;
goto wraperr;
}
err = request_ihex_firmware(&loader_fw, "emi26/loader.fw", &dev->dev);
if (err)
goto nofw;
err = request_ihex_firmware(&bitstream_fw, "emi26/bitstream.fw",
&dev->dev);
if (err)
goto nofw;
err = request_ihex_firmware(&firmware_fw, "emi26/firmware.fw",
&dev->dev);
if (err) {
nofw:
dev_err(&dev->dev, "%s - request_firmware() failed\n",
__func__);
goto wraperr;
}
err = emi26_set_reset(dev,1);
if (err < 0) {
dev_err(&dev->dev,"%s - error loading firmware: error = %d\n",
__func__, err);
goto wraperr;
}
rec = (const struct ihex_binrec *)loader_fw->data;
while (rec) {
err = emi26_writememory(dev, be32_to_cpu(rec->addr),
rec->data, be16_to_cpu(rec->len),
ANCHOR_LOAD_INTERNAL);
if (err < 0) {
err("%s - error loading firmware: error = %d", __func__, err);
goto wraperr;
}
rec = ihex_next_binrec(rec);
}
err = emi26_set_reset(dev,0);
if (err < 0) {
err("%s - error loading firmware: error = %d", __func__, err);
goto wraperr;
}
msleep(250);
rec = (const struct ihex_binrec *)bitstream_fw->data;
do {
i = 0;
addr = be32_to_cpu(rec->addr);
while (rec && (i + be16_to_cpu(rec->len) < FW_LOAD_SIZE)) {
memcpy(buf + i, rec->data, be16_to_cpu(rec->len));
i += be16_to_cpu(rec->len);
rec = ihex_next_binrec(rec);
}
err = emi26_writememory(dev, addr, buf, i, ANCHOR_LOAD_FPGA);
if (err < 0) {
err("%s - error loading firmware: error = %d", __func__, err);
goto wraperr;
}
} while (rec);
err = emi26_set_reset(dev,1);
if (err < 0) {
err("%s - error loading firmware: error = %d", __func__, err);
goto wraperr;
}
for (rec = (const struct ihex_binrec *)loader_fw->data;
rec; rec = ihex_next_binrec(rec)) {
err = emi26_writememory(dev, be32_to_cpu(rec->addr),
rec->data, be16_to_cpu(rec->len),
ANCHOR_LOAD_INTERNAL);
if (err < 0) {
err("%s - error loading firmware: error = %d", __func__, err);
goto wraperr;
}
}
msleep(250);
err = emi26_set_reset(dev,0);
if (err < 0) {
err("%s - error loading firmware: error = %d", __func__, err);
goto wraperr;
}
for (rec = (const struct ihex_binrec *)firmware_fw->data;
rec; rec = ihex_next_binrec(rec)) {
if (!INTERNAL_RAM(be32_to_cpu(rec->addr))) {
err = emi26_writememory(dev, be32_to_cpu(rec->addr),
rec->data, be16_to_cpu(rec->len),
ANCHOR_LOAD_EXTERNAL);
if (err < 0) {
err("%s - error loading firmware: error = %d", __func__, err);
goto wraperr;
}
}
}
err = emi26_set_reset(dev,1);
if (err < 0) {
err("%s - error loading firmware: error = %d", __func__, err);
goto wraperr;
}
for (rec = (const struct ihex_binrec *)firmware_fw->data;
rec; rec = ihex_next_binrec(rec)) {
if (INTERNAL_RAM(be32_to_cpu(rec->addr))) {
err = emi26_writememory(dev, be32_to_cpu(rec->addr),
rec->data, be16_to_cpu(rec->len),
ANCHOR_LOAD_INTERNAL);
if (err < 0) {
err("%s - error loading firmware: error = %d", __func__, err);
goto wraperr;
}
}
}
err = emi26_set_reset(dev,0);
if (err < 0) {
err("%s - error loading firmware: error = %d", __func__, err);
goto wraperr;
}
msleep(250);
err = 1;
wraperr:
release_firmware(loader_fw);
release_firmware(bitstream_fw);
release_firmware(firmware_fw);
kfree(buf);
return err;
}
static int emi26_load_firmware (struct usb_device *dev)
{
const struct firmware *loader_fw = NULL;
const struct firmware *bitstream_fw = NULL;
const struct firmware *firmware_fw = NULL;
const struct ihex_binrec *rec;
int err = -ENOMEM;
int i;
__u32 addr; /* Address to write */
__u8 *buf;
buf = kmalloc(FW_LOAD_SIZE, GFP_KERNEL);
if (!buf)
goto wraperr;
err = request_ihex_firmware(&loader_fw, "emi26/loader.fw", &dev->dev);
if (err)
goto nofw;
err = request_ihex_firmware(&bitstream_fw, "emi26/bitstream.fw",
&dev->dev);
if (err)
goto nofw;
err = request_ihex_firmware(&firmware_fw, "emi26/firmware.fw",
&dev->dev);
if (err) {
nofw:
dev_err(&dev->dev, "%s - request_firmware() failed\n",
__func__);
goto wraperr;
}
/* Assert reset (stop the CPU in the EMI) */
err = emi26_set_reset(dev,1);
if (err < 0)
goto wraperr;
rec = (const struct ihex_binrec *)loader_fw->data;
/* 1. We need to put the loader for the FPGA into the EZ-USB */
while (rec) {
err = emi26_writememory(dev, be32_to_cpu(rec->addr),
rec->data, be16_to_cpu(rec->len),
ANCHOR_LOAD_INTERNAL);
if (err < 0)
goto wraperr;
rec = ihex_next_binrec(rec);
}
/* De-assert reset (let the CPU run) */
err = emi26_set_reset(dev,0);
if (err < 0)
goto wraperr;
msleep(250); /* let device settle */
/* 2. We upload the FPGA firmware into the EMI
* Note: collect up to 1023 (yes!) bytes and send them with
* a single request. This is _much_ faster! */
rec = (const struct ihex_binrec *)bitstream_fw->data;
do {
i = 0;
addr = be32_to_cpu(rec->addr);
/* intel hex records are terminated with type 0 element */
while (rec && (i + be16_to_cpu(rec->len) < FW_LOAD_SIZE)) {
memcpy(buf + i, rec->data, be16_to_cpu(rec->len));
i += be16_to_cpu(rec->len);
rec = ihex_next_binrec(rec);
}
err = emi26_writememory(dev, addr, buf, i, ANCHOR_LOAD_FPGA);
if (err < 0)
goto wraperr;
} while (rec);
/* Assert reset (stop the CPU in the EMI) */
err = emi26_set_reset(dev,1);
if (err < 0)
goto wraperr;
/* 3. We need to put the loader for the firmware into the EZ-USB (again...) */
for (rec = (const struct ihex_binrec *)loader_fw->data;
rec; rec = ihex_next_binrec(rec)) {
err = emi26_writememory(dev, be32_to_cpu(rec->addr),
rec->data, be16_to_cpu(rec->len),
ANCHOR_LOAD_INTERNAL);
if (err < 0)
goto wraperr;
}
msleep(250); /* let device settle */
/* De-assert reset (let the CPU run) */
err = emi26_set_reset(dev,0);
if (err < 0)
goto wraperr;
/* 4. We put the part of the firmware that lies in the external RAM into the EZ-USB */
for (rec = (const struct ihex_binrec *)firmware_fw->data;
rec; rec = ihex_next_binrec(rec)) {
if (!INTERNAL_RAM(be32_to_cpu(rec->addr))) {
err = emi26_writememory(dev, be32_to_cpu(rec->addr),
rec->data, be16_to_cpu(rec->len),
ANCHOR_LOAD_EXTERNAL);
if (err < 0)
goto wraperr;
}
}
/* Assert reset (stop the CPU in the EMI) */
err = emi26_set_reset(dev,1);
if (err < 0)
goto wraperr;
for (rec = (const struct ihex_binrec *)firmware_fw->data;
rec; rec = ihex_next_binrec(rec)) {
if (INTERNAL_RAM(be32_to_cpu(rec->addr))) {
err = emi26_writememory(dev, be32_to_cpu(rec->addr),
rec->data, be16_to_cpu(rec->len),
ANCHOR_LOAD_INTERNAL);
if (err < 0)
goto wraperr;
}
}
/* De-assert reset (let the CPU run) */
err = emi26_set_reset(dev,0);
if (err < 0)
goto wraperr;
msleep(250); /* let device settle */
/* return 1 to fail the driver inialization
* and give real driver change to load */
err = 1;
wraperr:
if (err < 0)
dev_err(&dev->dev,"%s - error loading firmware: error = %d\n",
__func__, err);
release_firmware(loader_fw);
release_firmware(bitstream_fw);
release_firmware(firmware_fw);
kfree(buf);
return err;
}
static int emi26_load_firmware (struct usb_device *dev)
{
int err;
int i;
int pos = 0; /* Position in hex record */
__u32 addr; /* Address to write */
__u8 *buf;
buf = kmalloc(FW_LOAD_SIZE, GFP_KERNEL);
if (!buf) {
err( "%s - error loading firmware: error = %d", __FUNCTION__, -ENOMEM);
err = -ENOMEM;
goto wraperr;
}
/* Assert reset (stop the CPU in the EMI) */
err = emi26_set_reset(dev,1);
if (err < 0) {
err( "%s - error loading firmware: error = %d", __FUNCTION__, err);
goto wraperr;
}
/* 1. We need to put the loader for the FPGA into the EZ-USB */
for (i=0; g_Loader[i].type == 0; i++) {
err = emi26_writememory(dev, g_Loader[i].address, g_Loader[i].data, g_Loader[i].length, ANCHOR_LOAD_INTERNAL);
if (err < 0) {
err("%s - error loading firmware: error = %d", __FUNCTION__, err);
goto wraperr;
}
}
/* De-assert reset (let the CPU run) */
err = emi26_set_reset(dev,0);
/* 2. We upload the FPGA firmware into the EMI
* Note: collect up to 1023 (yes!) bytes and send them with
* a single request. This is _much_ faster! */
do {
i = 0;
addr = g_bitstream[pos].address;
/* intel hex records are terminated with type 0 element */
while ((g_bitstream[pos].type == 0) && (i + g_bitstream[pos].length < FW_LOAD_SIZE)) {
memcpy(buf + i, g_bitstream[pos].data, g_bitstream[pos].length);
i += g_bitstream[pos].length;
pos++;
}
err = emi26_writememory(dev, addr, buf, i, ANCHOR_LOAD_FPGA);
if (err < 0) {
err("%s - error loading firmware: error = %d", __FUNCTION__, err);
goto wraperr;
}
} while (i > 0);
/* Assert reset (stop the CPU in the EMI) */
err = emi26_set_reset(dev,1);
if (err < 0) {
err("%s - error loading firmware: error = %d", __FUNCTION__, err);
goto wraperr;
}
/* 3. We need to put the loader for the firmware into the EZ-USB (again...) */
for (i=0; g_Loader[i].type == 0; i++) {
err = emi26_writememory(dev, g_Loader[i].address, g_Loader[i].data, g_Loader[i].length, ANCHOR_LOAD_INTERNAL);
if (err < 0) {
err("%s - error loading firmware: error = %d", __FUNCTION__, err);
goto wraperr;
}
}
/* De-assert reset (let the CPU run) */
err = emi26_set_reset(dev,0);
if (err < 0) {
err("%s - error loading firmware: error = %d", __FUNCTION__, err);
goto wraperr;
}
/* 4. We put the part of the firmware that lies in the external RAM into the EZ-USB */
for (i=0; g_Firmware[i].type == 0; i++) {
if (!INTERNAL_RAM(g_Firmware[i].address)) {
err = emi26_writememory(dev, g_Firmware[i].address, g_Firmware[i].data, g_Firmware[i].length, ANCHOR_LOAD_EXTERNAL);
if (err < 0) {
err("%s - error loading firmware: error = %d", __FUNCTION__, err);
goto wraperr;
}
}
}
/* Assert reset (stop the CPU in the EMI) */
err = emi26_set_reset(dev,1);
if (err < 0) {
err("%s - error loading firmware: error = %d", __FUNCTION__, err);
goto wraperr;
}
for (i=0; g_Firmware[i].type == 0; i++) {
if (INTERNAL_RAM(g_Firmware[i].address)) {
err = emi26_writememory(dev, g_Firmware[i].address, g_Firmware[i].data, g_Firmware[i].length, ANCHOR_LOAD_INTERNAL);
if (err < 0) {
err("%s - error loading firmware: error = %d", __FUNCTION__, err);
goto wraperr;
}
}
}
/* De-assert reset (let the CPU run) */
err = emi26_set_reset(dev,0);
if (err < 0) {
err("%s - error loading firmware: error = %d", __FUNCTION__, err);
goto wraperr;
}
/* return 1 to fail the driver inialization
* and give real driver change to load */
err = 1;
wraperr:
kfree(buf);
return err;
}
