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Staging: wlan-ng: Convert firmware loading to load binary ihex format

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Convert prism2_usb firmware loading to load firmware in pre-compiled
binary 'ihex' format rather than ascii 'srec' format. This moves the
srec processing and sorting of records out of kernel space into a
pre-compiler. The driver now just works with the binary image, but
still does the 'pda plugging' of that image at runtime, as required
by the prism hardware.

Some Notes:

- The firmware is now expected to be in the same 'ihex' (.fw) format
  used by other drivers.

- The now driver assumes the data records are already sorted into ascending
  address order.

- Plug and crc records are still recognised by special address locations
  as in original srec processing.

- The srec S7 start address record is assumed to have been converted
  into a data record with another special address location (0xff400000),
  with the original start address being stored as a 4 byte data word
  (little endian).

Signed-off-by: Karl Relton <karllinuxtest.relton@ntlworld.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Karl Relton 2009-08-19 08:06:39 +01:00 committed by Greg Kroah-Hartman
parent c4004175eb
commit d89505998e
1 changed files with 126 additions and 329 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

455
drivers/staging/wlan-ng/prism2fw.c
View file

@ -47,83 +47,27 @@
/*================================================================*/
/* System Includes */
#include <linux/sort.h>
#include <linux/firmware.h>
#include <linux/ihex.h>
/*================================================================*/
/* Local Constants */
#define PRISM2_USB_FWFILE "prism2_ru.hex"
#define PRISM2_USB_FWFILE "prism2_ru.fw"
#define S3DATA_MAX 5000
#define S3PLUG_MAX 200
#define S3CRC_MAX 200
#define S3INFO_MAX 50
#define SREC_LINE_MAX 264
#define S3LEN_TXTOFFSET 2
#define S3LEN_TXTLEN 2
#define S3ADDR_TXTOFFSET 4
#define S3ADDR_TXTLEN 8
#define S3DATA_TXTOFFSET 12
/*S3DATA_TXTLEN variable, depends on len field */
/*S3CKSUM_TXTOFFSET variable, depends on len field */
#define S3CKSUM_TXTLEN 2
#define SERNUM_LEN_MAX 12
#define S3PLUG_ITEMCODE_TXTOFFSET (S3DATA_TXTOFFSET)
#define S3PLUG_ITEMCODE_TXTLEN 8
#define S3PLUG_ADDR_TXTOFFSET (S3DATA_TXTOFFSET+8)
#define S3PLUG_ADDR_TXTLEN 8
#define S3PLUG_LEN_TXTOFFSET (S3DATA_TXTOFFSET+16)
#define S3PLUG_LEN_TXTLEN 8
#define S3CRC_ADDR_TXTOFFSET (S3DATA_TXTOFFSET)
#define S3CRC_ADDR_TXTLEN 8
#define S3CRC_LEN_TXTOFFSET (S3DATA_TXTOFFSET+8)
#define S3CRC_LEN_TXTLEN 8
#define S3CRC_DOWRITE_TXTOFFSET (S3DATA_TXTOFFSET+16)
#define S3CRC_DOWRITE_TXTLEN 8
#define S3INFO_LEN_TXTOFFSET (S3DATA_TXTOFFSET)
#define S3INFO_LEN_TXTLEN 4
#define S3INFO_TYPE_TXTOFFSET (S3DATA_TXTOFFSET+4)
#define S3INFO_TYPE_TXTLEN 4
#define S3INFO_DATA_TXTOFFSET (S3DATA_TXTOFFSET+8)
/* S3INFO_DATA_TXTLEN variable, depends on INFO_LEN field */
#define S3ADDR_PLUG (0xff000000UL)
#define S3ADDR_CRC (0xff100000UL)
#define S3ADDR_INFO (0xff200000UL)
#define PDAFILE_LINE_MAX 1024
#define S3ADDR_START (0xff400000UL)
#define CHUNKS_MAX 100
#define WRITESIZE_MAX 4096
/*================================================================*/
/* Local Macros */
#define bswap_16(x) \
(__extension__ \
({ register unsigned short int __v, __x = (x); \
__asm__ ("rorw $8, %w0" \
: "=r" (__v) \
: "0" (__x) \
: "cc"); \
__v; }))
#define bswap_32(x) \
(__extension__ \
({ register unsigned int __v, __x = (x); \
__asm__ ("rorw $8, %w0;" \
"rorl $16, %0;" \
"rorw $8, %w0" \
: "=r" (__v) \
: "0" (__x) \
: "cc"); \
__v; }))
/*================================================================*/
/* Local Types */
@ -214,12 +158,11 @@ hfa384x_caplevel_t priid;
/*================================================================*/
/* Local Function Declarations */
int prism2_fwapply(char *rfptr, int rfsize, wlandevice_t * wlandev);
int read_srecfile(char *rfptr, int rfsize);
int prism2_fwapply(const struct ihex_binrec *rfptr, wlandevice_t *wlandev);
int read_fwfile(const struct ihex_binrec *rfptr);
int mkimage(imgchunk_t *clist, unsigned int *ccnt);
int read_cardpda(pda_t *pda, wlandevice_t *wlandev);
int mkpdrlist(pda_t *pda);
int s3datarec_compare(const void *p1, const void *p2);
int plugimage(imgchunk_t *fchunk, unsigned int nfchunks,
s3plugrec_t *s3plug, unsigned int ns3plug, pda_t * pda);
int crcimage(imgchunk_t *fchunk, unsigned int nfchunks,
@ -253,7 +196,7 @@ int prism2_fwtry(struct usb_device *udev, wlandevice_t *wlandev)
printk(KERN_INFO "prism2_usb: Checking for firmware %s\n",
PRISM2_USB_FWFILE);
if (request_firmware(&fw_entry, PRISM2_USB_FWFILE, &udev->dev) != 0) {
if (request_ihex_firmware(&fw_entry, PRISM2_USB_FWFILE, &udev->dev) != 0) {
printk(KERN_INFO
"prism2_usb: Firmware not available, but not essential\n");
printk(KERN_INFO
@ -263,7 +206,7 @@ int prism2_fwtry(struct usb_device *udev, wlandevice_t *wlandev)
printk(KERN_INFO "prism2_usb: %s will be processed, size %d\n",
PRISM2_USB_FWFILE, fw_entry->size);
prism2_fwapply((char *)fw_entry->data, fw_entry->size, wlandev);
prism2_fwapply((const struct ihex_binrec *)fw_entry->data, wlandev);
release_firmware(fw_entry);
return 0;
@ -276,14 +219,13 @@ int prism2_fwtry(struct usb_device *udev, wlandevice_t *wlandev)
*
* Arguments:
* rfptr firmware image in kernel memory
* rfsize firmware size in kernel memory
* wlandev device
*
* Returns:
* 0 - success
* ~0 - failure
----------------------------------------------------------------*/
int prism2_fwapply(char *rfptr, int rfsize, wlandevice_t *wlandev)
int prism2_fwapply(const struct ihex_binrec *rfptr, wlandevice_t *wlandev)
{
signed int result = 0;
p80211msg_dot11req_mibget_t getmsg;
@ -356,13 +298,11 @@ int prism2_fwapply(char *rfptr, int rfsize, wlandevice_t *wlandev)
priid.top = *data++;
/* Read the S3 file */
result = read_srecfile(rfptr, rfsize);
result = read_fwfile(rfptr);
if (result) {
printk(KERN_ERR "Failed to read the data exiting.\n");
return (1);
}
/* Sort the S3 data records */
sort(s3data, ns3data, sizeof(s3datarec_t), s3datarec_compare, NULL);
result = validate_identity();
@ -516,10 +456,6 @@ void free_chunks(imgchunk_t *fchunk, unsigned int *nfchunks)
----------------------------------------------------------------*/
void free_srecs(void)
{
int i;
for (i = 0; i < ns3data; i++) {
kfree(s3data[i].data);
}
ns3data = 0;
memset(s3data, 0, sizeof(s3data));
ns3plug = 0;
@ -598,10 +534,6 @@ int mkimage(imgchunk_t *clist, unsigned int *ccnt)
return (1);
}
memset(clist[i].data, 0, clist[i].len);
}
/* Display chunks */
for (i = 0; i < *ccnt; i++) {
pr_debug("chunk[%d]: addr=0x%06x len=%d\n",
i, clist[i].addr, clist[i].len);
}
@ -856,44 +788,20 @@ int read_cardpda(pda_t *pda, wlandevice_t *wlandev)
}
/*----------------------------------------------------------------
* copy_line
* read_fwfile
*
* Copies a line of text, up to \n, \0, or SREC_LINE_MAX, or limit of
* From array
* Reads the given fw file which should have been compiled from an srec
* file. Each record in the fw file will either be a plain data record,
* a start address record, or other records used for plugging.
*
* Arguments:
* from From addr
* to To addr
* limit Addr of last character in From array that can be copied
* Note that data records are expected to be sorted into
* ascending address order in the fw file.
*
* Returns:
* Num characters copied
----------------------------------------------------------------*/
int copyline(char *from, char *to, char *limit)
{
int c = 0;
while ((c < SREC_LINE_MAX - 1) && (from + c <= limit) &&
(from[c] != '\n') && (from[c] != '\0')) {
to[c] = from[c];
c++;
}
to[c] = '\0';
return (c < SREC_LINE_MAX - 1) ? c + 1 : c;
}
/*----------------------------------------------------------------
* read_srecfile
* Note also that the start address record, originally an S7 record in
* the srec file, is expected in the fw file to be like a data record but
* with a certain address to make it identiable.
*
* Reads the given srecord file and loads the records into the
* s3xxx arrays. This function can be called repeatedly (once for
* each of a set of files), if necessary. This function performs
* no validation of the data except for the grossest of S-record
* line format checks. Don't forget that these will be DOS files...
* CR/LF at the end of each line.
*
* Here's the SREC format we're dealing with:
* Here's the SREC format that the fw should have come from:
* S[37]nnaaaaaaaaddd...dddcc
*
* nn - number of bytes starting with the address field
@ -902,8 +810,9 @@ int copyline(char *from, char *to, char *limit)
* cc - checksum
*
* The S7 record's (there should be only one) address value gets
* saved in startaddr. It's the start execution address used
* for RAM downloads.
* converted to an S3 record with address of 0xff400000, with the
* start address being stored as a 4 byte data word. That address is
* the start execution address used for RAM downloads.
*
* The S3 records have a collection of subformats indicated by the
* value of aaaaaaaa:
@ -927,237 +836,124 @@ int copyline(char *from, char *to, char *limit)
* d - (s - 1) little endian words giving the contents of
* the given info type.
*
* 0xff400000 - Start address record, data field format:
* aaaaaaaa
* a - Address in load image to plug (little endian)
*
* Arguments:
* rfptr firmware image (s-record structure) in kernel memory
* rfsize firmware size in kernel memory
* record firmware image (ihex record structure) in kernel memory
*
* Returns:
* 0 - success
* ~0 - failure (probably an errno)
----------------------------------------------------------------*/
int read_srecfile(char *rfptr, int rfsize)
int read_fwfile(const struct ihex_binrec *record)
{
int result = 0;
char buf[SREC_LINE_MAX];
char tmpbuf[30];
s3datarec_t tmprec;
int i, c;
int line = 0;
u16 *tmpinfo;
char *endptr = rfptr + rfsize;
int i;
int rcnt = 0;
u16 *tmpinfo;
u16 *ptr16;
u32 *ptr32, len, addr;
pr_debug("Reading S-record file ...\n");
pr_debug("Reading fw file ...\n");
while ((c = copyline(rfptr, buf, endptr)) >= 12) {
rfptr = rfptr + c;
line++;
if (buf[0] != 'S') {
printk(KERN_ERR "%d warning: No initial \'S\'\n", line);
return 1;
}
if (buf[1] == '7') { /* S7 record, start address */
buf[12] = '\0';
startaddr = simple_strtoul(buf + 4, NULL, 16);
pr_debug(" S7 start addr, line=%d "
" addr=0x%08x\n", line, startaddr);
continue;
} else if (buf[1] == '3') {
/* Ok, it's an S3, parse and put it in the right array */
/* Record Length field (we only want datalen) */
memcpy(tmpbuf, buf + S3LEN_TXTOFFSET, S3LEN_TXTLEN);
tmpbuf[S3LEN_TXTLEN] = '\0';
tmprec.len = simple_strtoul(tmpbuf, NULL, 16) - 4 - 1; /* 4=addr, 1=cksum */
/* Address field */
memcpy(tmpbuf, buf + S3ADDR_TXTOFFSET, S3ADDR_TXTLEN);
tmpbuf[S3ADDR_TXTLEN] = '\0';
tmprec.addr = simple_strtoul(tmpbuf, NULL, 16);
/* Checksum field */
tmprec.checksum =
simple_strtoul(buf + strlen(buf) - 2, NULL, 16);
while (record) {
switch (tmprec.addr) {
case S3ADDR_PLUG:
memcpy(tmpbuf, buf + S3PLUG_ITEMCODE_TXTOFFSET,
S3PLUG_ITEMCODE_TXTLEN);
tmpbuf[S3PLUG_ITEMCODE_TXTLEN] = '\0';
s3plug[ns3plug].itemcode =
simple_strtoul(tmpbuf, NULL, 16);
s3plug[ns3plug].itemcode =
bswap_32(s3plug[ns3plug].itemcode);
rcnt++;
memcpy(tmpbuf, buf + S3PLUG_ADDR_TXTOFFSET,
S3PLUG_ADDR_TXTLEN);
tmpbuf[S3PLUG_ADDR_TXTLEN] = '\0';
s3plug[ns3plug].addr =
simple_strtoul(tmpbuf, NULL, 16);
s3plug[ns3plug].addr =
bswap_32(s3plug[ns3plug].addr);
len = be16_to_cpu(record->len);
addr = be32_to_cpu(record->addr);
memcpy(tmpbuf, buf + S3PLUG_LEN_TXTOFFSET,
S3PLUG_LEN_TXTLEN);
tmpbuf[S3PLUG_LEN_TXTLEN] = '\0';
s3plug[ns3plug].len =
simple_strtoul(tmpbuf, NULL, 16);
s3plug[ns3plug].len =
bswap_32(s3plug[ns3plug].len);
/* Point into data for different word lengths */
ptr32 = (u32 *) record->data;
ptr16 = (u16 *) record->data;
pr_debug(" S3 plugrec, line=%d "
"itemcode=0x%04x addr=0x%08x len=%d\n",
line,
s3plug[ns3plug].itemcode,
s3plug[ns3plug].addr,
s3plug[ns3plug].len);
/* parse what was an S3 srec and put it in the right array */
switch(addr) {
case S3ADDR_START:
startaddr = *ptr32;
pr_debug(" S7 start addr, record=%d "
" addr=0x%08x\n",
rcnt,
startaddr);
break;
case S3ADDR_PLUG:
s3plug[ns3plug].itemcode = *ptr32;
s3plug[ns3plug].addr = *(ptr32 + 1);
s3plug[ns3plug].len = *(ptr32 + 2);
ns3plug++;
if (ns3plug == S3PLUG_MAX) {
printk(KERN_ERR
"S3 plugrec limit reached - aborting\n");
return 1;
}
break;
case S3ADDR_CRC:
memcpy(tmpbuf, buf + S3CRC_ADDR_TXTOFFSET,
S3CRC_ADDR_TXTLEN);
tmpbuf[S3CRC_ADDR_TXTLEN] = '\0';
s3crc[ns3crc].addr =
simple_strtoul(tmpbuf, NULL, 16);
s3crc[ns3crc].addr =
bswap_32(s3crc[ns3crc].addr);
pr_debug(" S3 plugrec, record=%d "
"itemcode=0x%08x addr=0x%08x len=%d\n",
rcnt,
s3plug[ns3plug].itemcode,
s3plug[ns3plug].addr,
s3plug[ns3plug].len);
memcpy(tmpbuf, buf + S3CRC_LEN_TXTOFFSET,
S3CRC_LEN_TXTLEN);
tmpbuf[S3CRC_LEN_TXTLEN] = '\0';
s3crc[ns3crc].len =
simple_strtoul(tmpbuf, NULL, 16);
s3crc[ns3crc].len = bswap_32(s3crc[ns3crc].len);
memcpy(tmpbuf, buf + S3CRC_DOWRITE_TXTOFFSET,
S3CRC_DOWRITE_TXTLEN);
tmpbuf[S3CRC_DOWRITE_TXTLEN] = '\0';
s3crc[ns3crc].dowrite =
simple_strtoul(tmpbuf, NULL, 16);
s3crc[ns3crc].dowrite =
bswap_32(s3crc[ns3crc].dowrite);
pr_debug(" S3 crcrec, line=%d "
"addr=0x%08x len=%d write=0x%08x\n",
line,
s3crc[ns3crc].addr,
s3crc[ns3crc].len,
s3crc[ns3crc].dowrite);
ns3crc++;
if (ns3crc == S3CRC_MAX) {
printk(KERN_ERR
"S3 crcrec limit reached - aborting\n");
return 1;
}
break;
case S3ADDR_INFO:
memcpy(tmpbuf, buf + S3INFO_LEN_TXTOFFSET,
S3INFO_LEN_TXTLEN);
tmpbuf[S3INFO_LEN_TXTLEN] = '\0';
s3info[ns3info].len =
simple_strtoul(tmpbuf, NULL, 16);
s3info[ns3info].len =
bswap_16(s3info[ns3info].len);
memcpy(tmpbuf, buf + S3INFO_TYPE_TXTOFFSET,
S3INFO_TYPE_TXTLEN);
tmpbuf[S3INFO_TYPE_TXTLEN] = '\0';
s3info[ns3info].type =
simple_strtoul(tmpbuf, NULL, 16);
s3info[ns3info].type =
bswap_16(s3info[ns3info].type);
pr_debug(" S3 inforec, line=%d "
"len=0x%04x type=0x%04x\n",
line,
s3info[ns3info].len,
s3info[ns3info].type);
if (((s3info[ns3info].len - 1) * sizeof(u16)) >
sizeof(s3info[ns3info].info)) {
printk(KERN_ERR
" S3 inforec length too long - aborting\n");
return 1;
}
tmpinfo =
(u16 *) & (s3info[ns3info].info.version);
for (i = 0; i < s3info[ns3info].len - 1; i++) {
memcpy(tmpbuf,
buf + S3INFO_DATA_TXTOFFSET +
(i * 4), 4);
tmpbuf[4] = '\0';
tmpinfo[i] =
simple_strtoul(tmpbuf, NULL, 16);
tmpinfo[i] = bswap_16(tmpinfo[i]);
}
pr_debug(" info=");
for (i = 0; i < s3info[ns3info].len - 1; i++) {
pr_debug("%04x ", tmpinfo[i]);
}
pr_debug("\n");
ns3info++;
if (ns3info == S3INFO_MAX) {
printk(KERN_ERR
"S3 inforec limit reached - aborting\n");
return 1;
}
break;
default: /* Data record */
s3data[ns3data].addr = tmprec.addr;
s3data[ns3data].len = tmprec.len;
s3data[ns3data].checksum = tmprec.checksum;
s3data[ns3data].data =
kmalloc(tmprec.len, GFP_KERNEL);
for (i = 0; i < tmprec.len; i++) {
memcpy(tmpbuf,
buf + S3DATA_TXTOFFSET + (i * 2),
2);
tmpbuf[2] = '\0';
s3data[ns3data].data[i] =
simple_strtoul(tmpbuf, NULL, 16);
}
ns3data++;
if (ns3data == S3DATA_MAX) {
printk(KERN_ERR
"S3 datarec limit reached - aborting\n");
return 1;
}
break;
ns3plug++;
if ( ns3plug == S3PLUG_MAX ) {
printk(KERN_ERR "S3 plugrec limit reached - aborting\n");
return 1;
}
} else {
printk(KERN_WARNING
"%d warning: Unknown S-record detected.\n",
line);
}
}
return result;
}
break;
case S3ADDR_CRC:
s3crc[ns3crc].addr = *ptr32;
s3crc[ns3crc].len = *(ptr32 + 1);
s3crc[ns3crc].dowrite = *(ptr32 + 2);
/*----------------------------------------------------------------
* s3datarec_compare
*
* Comparison function for sort().
*
* Arguments:
* p1 ptr to the first item
* p2 ptr to the second item
* Returns:
* 0 items are equal
* <0 p1 < p2
* >0 p1 > p2
----------------------------------------------------------------*/
int s3datarec_compare(const void *p1, const void *p2)
{
const s3datarec_t *s1 = p1;
const s3datarec_t *s2 = p2;
if (s1->addr == s2->addr)
return 0;
if (s1->addr < s2->addr)
return -1;
return 1;
pr_debug(" S3 crcrec, record=%d "
"addr=0x%08x len=%d write=0x%08x\n",
rcnt,
s3crc[ns3crc].addr,
s3crc[ns3crc].len,
s3crc[ns3crc].dowrite);
ns3crc++;
if ( ns3crc == S3CRC_MAX ) {
printk(KERN_ERR "S3 crcrec limit reached - aborting\n");
return 1;
}
break;
case S3ADDR_INFO:
s3info[ns3info].len = *ptr16;
s3info[ns3info].type = *(ptr16 + 1);
pr_debug(" S3 inforec, record=%d "
"len=0x%04x type=0x%04x\n",
rcnt,
s3info[ns3info].len,
s3info[ns3info].type);
if ( ((s3info[ns3info].len - 1) * sizeof(u16)) > sizeof(s3info[ns3info].info) ) {
printk(KERN_ERR " S3 inforec length too long - aborting\n");
return 1;
}
tmpinfo = (u16*)&(s3info[ns3info].info.version);
pr_debug(" info=");
for (i = 0; i < s3info[ns3info].len - 1; i++) {
tmpinfo[i] = *(ptr16 + 2 + i);
pr_debug("%04x ", tmpinfo[i]);
}
pr_debug("\n");
ns3info++;
if ( ns3info == S3INFO_MAX ) {
printk(KERN_ERR "S3 inforec limit reached - aborting\n");
return 1;
}
break;
default: /* Data record */
s3data[ns3data].addr = addr;
s3data[ns3data].len = len;
s3data[ns3data].data = (uint8_t *) record->data;
ns3data++;
if ( ns3data == S3DATA_MAX ) {
printk(KERN_ERR "S3 datarec limit reached - aborting\n");
return 1;
}
break;
}
record = ihex_next_binrec(record);
}
return 0;
}
/*----------------------------------------------------------------
@ -1316,6 +1112,7 @@ int validate_identity(void)
{
int i;
int result = 1;
int trump = 0;
pr_debug("NIC ID: %#x v%d.%d.%d\n",
nicid.id, nicid.major, nicid.minor, nicid.variant);
@ -1389,8 +1186,7 @@ int validate_identity(void)
(nicid.id != 0x8008))
continue;
if (result != 2)
result = 0;
trump = 1;
break;
case 0x8001:
pr_debug("name inforec len %d\n", s3info[i].len);
@ -1402,5 +1198,6 @@ int validate_identity(void)
}
// walk through
if (trump && (result != 2)) result = 0;
return result;
}