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Message-Id: <1250665599.4545.3.camel@localhost>
Date: Wed, 19 Aug 2009 08:06:39 +0100
From: Karl Relton <karllinuxtest.relton@...world.com>
To: Greg KH <greg@...ah.com>
Cc: linux-kernel@...r.kernel.org
Subject: [PATCH] staging/wlan-ng: Convert firmware loading to load binary
ihex format
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.
Signed-off-by: Karl Relton <karllinuxtest.relton@...world.com>
---
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).
--- linux-2.6.31-rc6.orig/drivers/staging/wlan-ng/prism2fw.c 2009-08-17 15:58:27.000000000 +0100
+++ linux-2.6.31-rc6/drivers/staging/wlan-ng/prism2fw.c 2009-08-17 20:17:05.000000000 +0100
@@ -47,84 +47,28 @@
/*================================================================*/
/* 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 */
typedef struct s3datarec {
@@ -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
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
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
*
* 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 rfsi
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, uns
----------------------------------------------------------------*/
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
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_
}
/*----------------------------------------------------------------
-* copy_line
-*
-* Copies a line of text, up to \n, \0, or SREC_LINE_MAX, or limit of
-* From array
-*
-* Arguments:
-* from From addr
-* to To addr
-* limit Addr of last character in From array that can be copied
-*
-* 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
+* read_fwfile
*
-* 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.
+* 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.
+*
+* Note that data records are expected to be sorted into
+* ascending address order in the fw file.
+*
+* 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.
*
-* 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
* 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:
@@ -926,238 +835,125 @@ int copyline(char *from, char *to, char
* s3inforec_t for details about types.
* 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;
-
- pr_debug("Reading S-record 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);
-
- 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);
-
- 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);
-
- 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);
-
- 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);
-
- 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);
-
- 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;
- }
+ int i;
+ int rcnt = 0;
+ u16 *tmpinfo;
+ u16 *ptr16;
+ u32 *ptr32, len, addr;
+
+ pr_debug("Reading fw file ...\n");
+
+ while (record) {
+
+ rcnt++;
+
+ len = be16_to_cpu(record->len);
+ addr = be32_to_cpu(record->addr);
+
+ /* Point into data for different word lengths */
+ ptr32 = (u32 *) record->data;
+ ptr16 = (u16 *) record->data;
+
+ /* 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);
+
+ 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);
+
+ ns3plug++;
+ if ( ns3plug == S3PLUG_MAX ) {
+ printk(KERN_ERR "S3 plugrec limit reached - aborting\n");
+ return 1;
+ }
+ break;
+ case S3ADDR_CRC:
+ s3crc[ns3crc].addr = *ptr32;
+ s3crc[ns3crc].len = *(ptr32 + 1);
+ s3crc[ns3crc].dowrite = *(ptr32 + 2);
+
+ 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);
- 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");
+ 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 = 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;
+ ns3info++;
+ if ( ns3info == S3INFO_MAX ) {
+ printk(KERN_ERR "S3 inforec limit reached - aborting\n");
+ return 1;
}
- } else {
- printk(KERN_WARNING
- "%d warning: Unknown S-record detected.\n",
- line);
+ 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 result;
-}
-
-/*----------------------------------------------------------------
-* 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;
+ 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;
}
--
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