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FT1000 driver for Flarion Flash OFDM NIC Device
Copyright (C) 2002 Flarion Technologies, All rights reserved.
This program is free software; you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by the Free
Software Foundation; either version 2 of the License, or (at your option) any
later version. This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
more details. You should have received a copy of the GNU General Public
License along with this program; if not, write to the
Free Software Foundation, Inc., 59 Temple Place -
Suite 330, Boston, MA 02111-1307, USA.
--------------------------------------------------------------------------
Description: This module will handshake with the DSP bootloader to
download the DSP runtime image.
---------------------------------------------------------------------------*/
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
#define __KERNEL_SYSCALLS__
#include <linux/module.h>
#include <linux/fs.h>
#include <linux/mm.h>
#include <linux/slab.h>
#include <linux/unistd.h>
#include <linux/netdevice.h>
#include <linux/timer.h>
#include <linux/delay.h>
#include <linux/io.h>
#include <linux/uaccess.h>
#include <linux/vmalloc.h>
#include "ft1000.h"
#include "boot.h"
#define MAX_DSP_WAIT_LOOPS 100
#define DSP_WAIT_SLEEP_TIME 1 /* 1 millisecond */
#define MAX_LENGTH 0x7f0
#define DWNLD_MAG_HANDSHAKE_LOC 0x00
#define DWNLD_MAG_TYPE_LOC 0x01
#define DWNLD_MAG_SIZE_LOC 0x02
#define DWNLD_MAG_PS_HDR_LOC 0x03
#define DWNLD_HANDSHAKE_LOC 0x02
#define DWNLD_TYPE_LOC 0x04
#define DWNLD_SIZE_MSW_LOC 0x06
#define DWNLD_SIZE_LSW_LOC 0x08
#define DWNLD_PS_HDR_LOC 0x0A
#define HANDSHAKE_TIMEOUT_VALUE 0xF1F1
#define HANDSHAKE_RESET_VALUE 0xFEFE /* When DSP requests startover */
#define HANDSHAKE_DSP_BL_READY 0xFEFE /* At start DSP writes this when bootloader ready */
#define HANDSHAKE_DRIVER_READY 0xFFFF /* Driver writes after receiving 0xFEFE */
#define HANDSHAKE_SEND_DATA 0x0000 /* DSP writes this when ready for more data */
#define HANDSHAKE_REQUEST 0x0001 /* Request from DSP */
#define HANDSHAKE_RESPONSE 0x0000 /* Satisfied DSP request */
#define REQUEST_CODE_LENGTH 0x0000
#define REQUEST_RUN_ADDRESS 0x0001
#define REQUEST_CODE_SEGMENT 0x0002 /* In WORD count */
#define REQUEST_DONE_BL 0x0003
#define REQUEST_DONE_CL 0x0004
#define REQUEST_VERSION_INFO 0x0005
#define REQUEST_CODE_BY_VERSION 0x0006
#define REQUEST_MAILBOX_DATA 0x0007
#define REQUEST_FILE_CHECKSUM 0x0008
#define STATE_START_DWNLD 0x01
#define STATE_BOOT_DWNLD 0x02
#define STATE_CODE_DWNLD 0x03
#define STATE_DONE_DWNLD 0x04
#define STATE_SECTION_PROV 0x05
#define STATE_DONE_PROV 0x06
#define STATE_DONE_FILE 0x07
u16 get_handshake(struct net_device *dev, u16 expected_value);
void put_handshake(struct net_device *dev, u16 handshake_value);
u16 get_request_type(struct net_device *dev);
long get_request_value(struct net_device *dev);
void put_request_value(struct net_device *dev, long lvalue);
u16 hdr_checksum(struct pseudo_hdr *pHdr);
struct dsp_file_hdr {
u32 version_id; /* Version ID of this image format. */
u32 package_id; /* Package ID of code release. */
u32 build_date; /* Date/time stamp when file was built. */
u32 commands_offset; /* Offset to attached commands in Pseudo Hdr format. */
u32 loader_offset; /* Offset to bootloader code. */
u32 loader_code_address; /* Start address of bootloader. */
u32 loader_code_end; /* Where bootloader code ends. */
u32 loader_code_size;
u32 version_data_offset; /* Offset were scrambled version data begins. */
u32 version_data_size; /* Size, in words, of scrambled version data. */
u32 nDspImages; /* Number of DSP images in file. */
} __packed;
struct dsp_image_info {
u32 coff_date; /* Date/time when DSP Coff image was built. */
u32 begin_offset; /* Offset in file where image begins. */
u32 end_offset; /* Offset in file where image begins. */
u32 run_address; /* On chip Start address of DSP code. */
u32 image_size; /* Size of image. */
u32 version; /* Embedded version # of DSP code. */
unsigned short checksum; /* Dsp File checksum */
unsigned short pad1;
} __packed;
void card_bootload(struct net_device *dev)
{
struct ft1000_info *info = netdev_priv(dev);
unsigned long flags;
u32 *pdata;
u32 size;
u32 i;
u32 templong;
netdev_dbg(dev, "card_bootload is called\n");
pdata = (u32 *)bootimage;
size = sizeof(bootimage);
/* check for odd word */
if (size & 0x0003)
size += 4;
/* Provide mutual exclusive access while reading ASIC registers. */
spin_lock_irqsave(&info->dpram_lock, flags);
/* need to set i/o base address initially and hardware will autoincrement */
ft1000_write_reg(dev, FT1000_REG_DPRAM_ADDR, FT1000_DPRAM_BASE);
/* write bytes */
for (i = 0; i < (size >> 2); i++) {
templong = *pdata++;
outl(templong, dev->base_addr + FT1000_REG_MAG_DPDATA);
}
spin_unlock_irqrestore(&info->dpram_lock, flags);
}
u16 get_handshake(struct net_device *dev, u16 expected_value)
{
struct ft1000_info *info = netdev_priv(dev);
u16 handshake;
u32 tempx;
int loopcnt;
loopcnt = 0;
while (loopcnt < MAX_DSP_WAIT_LOOPS) {
if (info->AsicID == ELECTRABUZZ_ID) {
ft1000_write_reg(dev, FT1000_REG_DPRAM_ADDR,
DWNLD_HANDSHAKE_LOC);
handshake = ft1000_read_reg(dev, FT1000_REG_DPRAM_DATA);
} else {
tempx =
ntohl(ft1000_read_dpram_mag_32
(dev, DWNLD_MAG_HANDSHAKE_LOC));
handshake = (u16)tempx;
}
if ((handshake == expected_value)
|| (handshake == HANDSHAKE_RESET_VALUE)) {
return handshake;
}
loopcnt++;
mdelay(DSP_WAIT_SLEEP_TIME);
}
return HANDSHAKE_TIMEOUT_VALUE;
}
void put_handshake(struct net_device *dev, u16 handshake_value)
{
struct ft1000_info *info = netdev_priv(dev);
u32 tempx;
if (info->AsicID == ELECTRABUZZ_ID) {
ft1000_write_reg(dev, FT1000_REG_DPRAM_ADDR,
DWNLD_HANDSHAKE_LOC);
ft1000_write_reg(dev, FT1000_REG_DPRAM_DATA, handshake_value); /* Handshake */
} else {
tempx = (u32)handshake_value;
tempx = ntohl(tempx);
ft1000_write_dpram_mag_32(dev, DWNLD_MAG_HANDSHAKE_LOC, tempx); /* Handshake */
}
}
u16 get_request_type(struct net_device *dev)
{
struct ft1000_info *info = netdev_priv(dev);
u16 request_type;
u32 tempx;
if (info->AsicID == ELECTRABUZZ_ID) {
ft1000_write_reg(dev, FT1000_REG_DPRAM_ADDR, DWNLD_TYPE_LOC);
request_type = ft1000_read_reg(dev, FT1000_REG_DPRAM_DATA);
} else {
tempx = ft1000_read_dpram_mag_32(dev, DWNLD_MAG_TYPE_LOC);
tempx = ntohl(tempx);
request_type = (u16)tempx;
}
return request_type;
}
long get_request_value(struct net_device *dev)
{
struct ft1000_info *info = netdev_priv(dev);
long value;
u16 w_val;
if (info->AsicID == ELECTRABUZZ_ID) {
ft1000_write_reg(dev, FT1000_REG_DPRAM_ADDR,
DWNLD_SIZE_MSW_LOC);
w_val = ft1000_read_reg(dev, FT1000_REG_DPRAM_DATA);
value = (long)(w_val << 16);
ft1000_write_reg(dev, FT1000_REG_DPRAM_ADDR,
DWNLD_SIZE_LSW_LOC);
w_val = ft1000_read_reg(dev, FT1000_REG_DPRAM_DATA);
value = (long)(value | w_val);
} else {
value = ft1000_read_dpram_mag_32(dev, DWNLD_MAG_SIZE_LOC);
value = ntohl(value);
}
return value;
}
void put_request_value(struct net_device *dev, long lvalue)
{
struct ft1000_info *info = netdev_priv(dev);
u16 size;
u32 tempx;
if (info->AsicID == ELECTRABUZZ_ID) {
size = (u16) (lvalue >> 16);
ft1000_write_reg(dev, FT1000_REG_DPRAM_ADDR,
DWNLD_SIZE_MSW_LOC);
ft1000_write_reg(dev, FT1000_REG_DPRAM_DATA, size);
size = (u16) (lvalue);
ft1000_write_reg(dev, FT1000_REG_DPRAM_ADDR,
DWNLD_SIZE_LSW_LOC);
ft1000_write_reg(dev, FT1000_REG_DPRAM_DATA, size);
} else {
tempx = ntohl(lvalue);
ft1000_write_dpram_mag_32(dev, DWNLD_MAG_SIZE_LOC, tempx); /* Handshake */
}
}
u16 hdr_checksum(struct pseudo_hdr *pHdr)
{
u16 *usPtr = (u16 *)pHdr;
u16 chksum;
chksum = (((((usPtr[0] ^ usPtr[1]) ^ usPtr[2]) ^ usPtr[3]) ^
usPtr[4]) ^ usPtr[5]) ^ usPtr[6];
return chksum;
}
int card_download(struct net_device *dev, const u8 *pFileStart,
size_t FileLength)
{
struct ft1000_info *info = netdev_priv(dev);
int Status = SUCCESS;
u32 uiState;
u16 handshake;
struct pseudo_hdr *pHdr;
u16 usHdrLength;
long word_length;
u16 request;
u16 temp;
struct prov_record *pprov_record;
u8 *pbuffer;
struct dsp_file_hdr *pFileHdr5;
struct dsp_image_info *pDspImageInfoV6 = NULL;
long requested_version;
bool bGoodVersion = false;
struct drv_msg *pMailBoxData;
u16 *pUsData = NULL;
u16 *pUsFile = NULL;
u8 *pUcFile = NULL;
u8 *pBootEnd = NULL;
u8 *pCodeEnd = NULL;
int imageN;
long file_version;
long loader_code_address = 0;
long loader_code_size = 0;
long run_address = 0;
long run_size = 0;
unsigned long flags;
unsigned long templong;
unsigned long image_chksum = 0;
file_version = *(long *)pFileStart;
if (file_version != 6) {
pr_err("unsupported firmware version %ld\n", file_version);
Status = FAILURE;
}
uiState = STATE_START_DWNLD;
pFileHdr5 = (struct dsp_file_hdr *)pFileStart;
pUsFile = (u16 *) ((long)pFileStart + pFileHdr5->loader_offset);
pUcFile = (u8 *) ((long)pFileStart + pFileHdr5->loader_offset);
pBootEnd = (u8 *) ((long)pFileStart + pFileHdr5->loader_code_end);
loader_code_address = pFileHdr5->loader_code_address;
loader_code_size = pFileHdr5->loader_code_size;
bGoodVersion = false;
while ((Status == SUCCESS) && (uiState != STATE_DONE_FILE)) {
switch (uiState) {
case STATE_START_DWNLD:
handshake = get_handshake(dev, HANDSHAKE_DSP_BL_READY);
if (handshake == HANDSHAKE_DSP_BL_READY)
put_handshake(dev, HANDSHAKE_DRIVER_READY);
else
Status = FAILURE;
uiState = STATE_BOOT_DWNLD;
break;
case STATE_BOOT_DWNLD:
handshake = get_handshake(dev, HANDSHAKE_REQUEST);
if (handshake == HANDSHAKE_REQUEST) {
/*
* Get type associated with the request.
*/
request = get_request_type(dev);
switch (request) {
case REQUEST_RUN_ADDRESS:
put_request_value(dev,
loader_code_address);
break;
case REQUEST_CODE_LENGTH:
put_request_value(dev,
loader_code_size);
break;
case REQUEST_DONE_BL:
/* Reposition ptrs to beginning of code section */
pUsFile = (u16 *) ((long)pBootEnd);
pUcFile = (u8 *) ((long)pBootEnd);
uiState = STATE_CODE_DWNLD;
break;
case REQUEST_CODE_SEGMENT:
word_length = get_request_value(dev);
if (word_length > MAX_LENGTH) {
Status = FAILURE;
break;
}
if ((word_length * 2 + (long)pUcFile) >
(long)pBootEnd) {
/*
* Error, beyond boot code range.
*/
Status = FAILURE;
break;
}
/* Provide mutual exclusive access while reading ASIC registers. */
spin_lock_irqsave(&info->dpram_lock,
flags);
/*
* Position ASIC DPRAM auto-increment pointer.
*/
outw(DWNLD_MAG_PS_HDR_LOC,
dev->base_addr +
FT1000_REG_DPRAM_ADDR);
if (word_length & 0x01)
word_length++;
word_length = word_length / 2;
for (; word_length > 0; word_length--) { /* In words */
templong = *pUsFile++;
templong |=
(*pUsFile++ << 16);
pUcFile += 4;
outl(templong,
dev->base_addr +
FT1000_REG_MAG_DPDATAL);
}
spin_unlock_irqrestore(&info->
dpram_lock,
flags);
break;
default:
Status = FAILURE;
break;
}
put_handshake(dev, HANDSHAKE_RESPONSE);
} else {
Status = FAILURE;
}
break;
case STATE_CODE_DWNLD:
handshake = get_handshake(dev, HANDSHAKE_REQUEST);
if (handshake == HANDSHAKE_REQUEST) {
/*
* Get type associated with the request.
*/
request = get_request_type(dev);
switch (request) {
case REQUEST_FILE_CHECKSUM:
netdev_dbg(dev,
"ft1000_dnld: REQUEST_FOR_CHECKSUM\n");
put_request_value(dev, image_chksum);
break;
case REQUEST_RUN_ADDRESS:
if (bGoodVersion) {
put_request_value(dev,
run_address);
} else {
Status = FAILURE;
break;
}
break;
case REQUEST_CODE_LENGTH:
if (bGoodVersion) {
put_request_value(dev,
run_size);
} else {
Status = FAILURE;
break;
}
break;
case REQUEST_DONE_CL:
/* Reposition ptrs to beginning of provisioning section */
pUsFile = (u16 *) ((long)pFileStart + pFileHdr5->commands_offset);
pUcFile = (u8 *) ((long)pFileStart + pFileHdr5->commands_offset);
uiState = STATE_DONE_DWNLD;
break;
case REQUEST_CODE_SEGMENT:
if (!bGoodVersion) {
Status = FAILURE;
break;
}
word_length = get_request_value(dev);
if (word_length > MAX_LENGTH) {
Status = FAILURE;
break;
}
if ((word_length * 2 + (long)pUcFile) >
(long)pCodeEnd) {
/*
* Error, beyond boot code range.
*/
Status = FAILURE;
break;
}
/*
* Position ASIC DPRAM auto-increment pointer.
*/
outw(DWNLD_MAG_PS_HDR_LOC,
dev->base_addr +
FT1000_REG_DPRAM_ADDR);
if (word_length & 0x01)
word_length++;
word_length = word_length / 2;
for (; word_length > 0; word_length--) { /* In words */
templong = *pUsFile++;
templong |=
(*pUsFile++ << 16);
pUcFile += 4;
outl(templong,
dev->base_addr +
FT1000_REG_MAG_DPDATAL);
}
break;
case REQUEST_MAILBOX_DATA:
/* Convert length from byte count to word count. Make sure we round up. */
word_length =
(long)(info->DSPInfoBlklen + 1) / 2;
put_request_value(dev, word_length);
pMailBoxData =
(struct drv_msg *)&info->DSPInfoBlk[0];
pUsData =
(u16 *)&pMailBoxData->data[0];
/* Provide mutual exclusive access while reading ASIC registers. */
spin_lock_irqsave(&info->dpram_lock,
flags);
if (file_version == 5) {
/*
* Position ASIC DPRAM auto-increment pointer.
*/
ft1000_write_reg(dev,
FT1000_REG_DPRAM_ADDR,
DWNLD_PS_HDR_LOC);
for (; word_length > 0; word_length--) { /* In words */
temp = ntohs(*pUsData);
ft1000_write_reg(dev,
FT1000_REG_DPRAM_DATA,
temp);
pUsData++;
}
} else {
/*
* Position ASIC DPRAM auto-increment pointer.
*/
outw(DWNLD_MAG_PS_HDR_LOC,
dev->base_addr +
FT1000_REG_DPRAM_ADDR);
if (word_length & 0x01)
word_length++;
word_length = word_length / 2;
for (; word_length > 0; word_length--) { /* In words */
templong = *pUsData++;
templong |=
(*pUsData++ << 16);
outl(templong,
dev->base_addr +
FT1000_REG_MAG_DPDATAL);
}
}
spin_unlock_irqrestore(&info->
dpram_lock,
flags);
break;
case REQUEST_VERSION_INFO:
word_length =
pFileHdr5->version_data_size;
put_request_value(dev, word_length);
pUsFile =
(u16 *) ((long)pFileStart +
pFileHdr5->
version_data_offset);
/* Provide mutual exclusive access while reading ASIC registers. */
spin_lock_irqsave(&info->dpram_lock,
flags);
/*
* Position ASIC DPRAM auto-increment pointer.
*/
outw(DWNLD_MAG_PS_HDR_LOC,
dev->base_addr +
FT1000_REG_DPRAM_ADDR);
if (word_length & 0x01)
word_length++;
word_length = word_length / 2;
for (; word_length > 0; word_length--) { /* In words */
templong =
ntohs(*pUsFile++);
temp =
ntohs(*pUsFile++);
templong |=
(temp << 16);
outl(templong,
dev->base_addr +
FT1000_REG_MAG_DPDATAL);
}
spin_unlock_irqrestore(&info->
dpram_lock,
flags);
break;
case REQUEST_CODE_BY_VERSION:
bGoodVersion = false;
requested_version =
get_request_value(dev);
pDspImageInfoV6 =
(struct dsp_image_info *) ((long)
pFileStart
+
sizeof
(struct dsp_file_hdr));
for (imageN = 0;
imageN <
pFileHdr5->nDspImages;
imageN++) {
temp = (u16)
(pDspImageInfoV6->
version);
templong = temp;
temp = (u16)
(pDspImageInfoV6->
version >> 16);
templong |=
(temp << 16);
if (templong ==
requested_version) {
bGoodVersion =
true;
pUsFile =
(u16
*) ((long)
pFileStart
+
pDspImageInfoV6->
begin_offset);
pUcFile =
(u8
*) ((long)
pFileStart
+
pDspImageInfoV6->
begin_offset);
pCodeEnd =
(u8
*) ((long)
pFileStart
+
pDspImageInfoV6->
end_offset);
run_address =
pDspImageInfoV6->
run_address;
run_size =
pDspImageInfoV6->
image_size;
image_chksum =
(u32)
pDspImageInfoV6->
checksum;
netdev_dbg(dev,
"ft1000_dnld: image_chksum = 0x%8x\n",
(unsigned
int)
image_chksum);
break;
}
pDspImageInfoV6++;
}
if (!bGoodVersion) {
/*
* Error, beyond boot code range.
*/
Status = FAILURE;
break;
}
break;
default:
Status = FAILURE;
break;
}
put_handshake(dev, HANDSHAKE_RESPONSE);
} else {
Status = FAILURE;
}
break;
case STATE_DONE_DWNLD:
if (((unsigned long)(pUcFile) - (unsigned long) pFileStart) >=
(unsigned long)FileLength) {
uiState = STATE_DONE_FILE;
break;
}
pHdr = (struct pseudo_hdr *)pUsFile;
if (pHdr->portdest == 0x80 /* DspOAM */
&& (pHdr->portsrc == 0x00 /* Driver */
|| pHdr->portsrc == 0x10 /* FMM */)) {
uiState = STATE_SECTION_PROV;
} else {
netdev_dbg(dev,
"Download error: Bad Port IDs in Pseudo Record\n");
netdev_dbg(dev, "\t Port Source = 0x%2.2x\n",
pHdr->portsrc);
netdev_dbg(dev, "\t Port Destination = 0x%2.2x\n",
pHdr->portdest);
Status = FAILURE;
}
break;
case STATE_SECTION_PROV:
pHdr = (struct pseudo_hdr *)pUcFile;
if (pHdr->checksum == hdr_checksum(pHdr)) {
if (pHdr->portdest != 0x80 /* Dsp OAM */) {
uiState = STATE_DONE_PROV;
break;
}
usHdrLength = ntohs(pHdr->length); /* Byte length for PROV records */
/* Get buffer for provisioning data */
pbuffer =
kmalloc(usHdrLength + sizeof(struct pseudo_hdr),
GFP_ATOMIC);
if (pbuffer) {
memcpy(pbuffer, pUcFile,
(u32) (usHdrLength +
sizeof(struct pseudo_hdr)));
/* link provisioning data */
pprov_record =
kmalloc(sizeof(struct prov_record),
GFP_ATOMIC);
if (pprov_record) {
pprov_record->pprov_data =
pbuffer;
list_add_tail(&pprov_record->
list,
&info->prov_list);
/* Move to next entry if available */
pUcFile =
(u8 *)((unsigned long) pUcFile +
(unsigned long) ((usHdrLength + 1) & 0xFFFFFFFE) + sizeof(struct pseudo_hdr));
if ((unsigned long) (pUcFile) -
(unsigned long) (pFileStart) >=
(unsigned long)FileLength) {
uiState =
STATE_DONE_FILE;
}
} else {
kfree(pbuffer);
Status = FAILURE;
}
} else {
Status = FAILURE;
}
} else {
/* Checksum did not compute */
Status = FAILURE;
}
break;
case STATE_DONE_PROV:
uiState = STATE_DONE_FILE;
break;
default:
Status = FAILURE;
break;
} /* End Switch */
} /* End while */
return Status;
}
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