ath9k: add some fixes for AR9003

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@24016 3c298f89-4303-0410-b956-a3cf2f4a3e73

1 files changed, 149 insertions, 0 deletions

diff --git a/package/mac80211/patches/530-ath9k_otp_rom.patch b/package/mac80211/patches/530-ath9k_otp_rom.patch
new file mode 100644
index 0000000000..81f8de52fa
--- /dev/null
+++ b/package/mac80211/patches/530-ath9k_otp_rom.patch
@@ -0,0 +1,149 @@
+--- a/drivers/net/wireless/ath/ath9k/ar9003_eeprom.c
++++ b/drivers/net/wireless/ath/ath9k/ar9003_eeprom.c
+@@ -3104,6 +3104,36 @@ error:
+ 	return false;
+ }
+ 
++static bool ar9300_otp_read_word(struct ath_hw *ah, int addr, u32 *data)
++{
++	REG_READ(ah, AR9300_OTP_BASE + (4 * addr));
++
++	if (!ath9k_hw_wait(ah, AR9300_OTP_STATUS, AR9300_OTP_STATUS_TYPE,
++			   AR9300_OTP_STATUS_VALID, 1000))
++		return false;
++
++	*data = REG_READ(ah, AR9300_OTP_READ_DATA);
++	return true;
++}
++
++static bool ar9300_read_otp(struct ath_hw *ah, int address, u8 *buffer,
++			    int count)
++{
++	u32 data;
++	int i;
++
++	for (i = 0; i < count; i++) {
++		int offset = 8 * ((address - i) % 4);
++		if (!ar9300_otp_read_word(ah, (address - i) / 4, &data))
++			return false;
++
++		buffer[i] = (data >> offset) & 0xff;
++	}
++
++	return true;
++}
++
++
+ static void ar9300_comp_hdr_unpack(u8 *best, int *code, int *reference,
+ 				   int *length, int *major, int *minor)
+ {
+@@ -3221,6 +3251,26 @@ static int ar9300_compress_decision(stru
+ 	return 0;
+ }
+ 
++typedef bool (*eeprom_read_op)(struct ath_hw *ah, int address, u8 *buffer,
++			       int count);
++
++static bool ar9300_check_header(void *data)
++{
++	u32 *word = data;
++	return !(*word == 0 || *word == ~0);
++}
++
++static bool ar9300_check_eeprom_header(struct ath_hw *ah, eeprom_read_op read,
++				       int base_addr)
++{
++	u8 header[4];
++
++	if (!read(ah, base_addr, header, 4))
++		return false;
++
++	return ar9300_check_header(header);
++}
++
+ /*
+  * Read the configuration data from the eeprom.
+  * The data can be put in any specified memory buffer.
+@@ -3241,6 +3291,7 @@ static int ar9300_eeprom_restore_interna
+ 	int it;
+ 	u16 checksum, mchecksum;
+ 	struct ath_common *common = ath9k_hw_common(ah);
++	eeprom_read_op read;
+ 
+ 	word = kzalloc(2048, GFP_KERNEL);
+ 	if (!word)
+@@ -3248,14 +3299,42 @@ static int ar9300_eeprom_restore_interna
+ 
+ 	memcpy(mptr, &ar9300_default, mdata_size);
+ 
++	read = ar9300_read_eeprom;
+ 	cptr = AR9300_BASE_ADDR;
++	ath_print(common, ATH_DBG_EEPROM,
++		"Trying EEPROM accesss at Address 0x%04x\n", cptr);
++	if (ar9300_check_eeprom_header(ah, read, cptr))
++		goto found;
++
++	cptr = AR9300_BASE_ADDR_512;
++	ath_print(common, ATH_DBG_EEPROM,
++		"Trying EEPROM accesss at Address 0x%04x\n", cptr);
++	if (ar9300_check_eeprom_header(ah, read, cptr))
++		goto found;
++
++	read = ar9300_read_otp;
++	cptr = AR9300_BASE_ADDR;
++	ath_print(common, ATH_DBG_EEPROM,
++		"Trying OTP accesss at Address 0x%04x\n", cptr);
++	if (ar9300_check_eeprom_header(ah, read, cptr))
++		goto found;
++
++	cptr = AR9300_BASE_ADDR_512;
++	ath_print(common, ATH_DBG_EEPROM,
++		"Trying OTP accesss at Address 0x%04x\n", cptr);
++	if (ar9300_check_eeprom_header(ah, read, cptr))
++		goto found;
++
++	goto fail;
++
++found:
++	ath_print(common, ATH_DBG_EEPROM, "Found valid EEPROM data");
++
+ 	for (it = 0; it < MSTATE; it++) {
+-		if (!ar9300_read_eeprom(ah, cptr, word, COMP_HDR_LEN))
++		if (!read(ah, cptr, word, COMP_HDR_LEN))
+ 			goto fail;
+ 
+-		if ((word[0] == 0 && word[1] == 0 && word[2] == 0 &&
+-		     word[3] == 0) || (word[0] == 0xff && word[1] == 0xff
+-				       && word[2] == 0xff && word[3] == 0xff))
++		if (!ar9300_check_header(word))
+ 			break;
+ 
+ 		ar9300_comp_hdr_unpack(word, &code, &reference,
+@@ -3272,8 +3351,7 @@ static int ar9300_eeprom_restore_interna
+ 		}
+ 
+ 		osize = length;
+-		ar9300_read_eeprom(ah, cptr, word,
+-				   COMP_HDR_LEN + osize + COMP_CKSUM_LEN);
++		read(ah, cptr, word, COMP_HDR_LEN + osize + COMP_CKSUM_LEN);
+ 		checksum = ar9300_comp_cksum(&word[COMP_HDR_LEN], length);
+ 		mchecksum = word[COMP_HDR_LEN + osize] |
+ 		    (word[COMP_HDR_LEN + osize + 1] << 8);
+--- a/drivers/net/wireless/ath/ath9k/ar9003_eeprom.h
++++ b/drivers/net/wireless/ath/ath9k/ar9003_eeprom.h
+@@ -79,6 +79,15 @@
+ #define FIXED_CCA_THRESHOLD 15
+ 
+ #define AR9300_BASE_ADDR 0x3ff
++#define AR9300_BASE_ADDR_512 0x1ff
++
++#define AR9300_OTP_BASE			0x14000
++#define AR9300_OTP_STATUS		0x15f18
++#define AR9300_OTP_STATUS_TYPE		0x7
++#define AR9300_OTP_STATUS_VALID		0x4
++#define AR9300_OTP_STATUS_ACCESS_BUSY	0x2
++#define AR9300_OTP_STATUS_SM_BUSY	0x1
++#define AR9300_OTP_READ_DATA		0x15f1c
+ 
+ enum targetPowerHTRates {
+ 	HT_TARGET_RATE_0_8_16,