forked from Minki/linux
[TG3]: Endianness annotations.
Fixed misannotations, introduced a new helper - tg3_nvram_read_le(). It gets __le32 * instead of u32 * and puts there the value converted to little-endian. A lot of callers of tg3_nvram_read() were doing that; converted them to tg3_nvram_read_le(). At that point the driver is practically endian-clean; the only remaining place is an actual bug, AFAICS; will be dealt with in the next patch. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Al Viro
David S. Miller
parent
20880e8936
commit
b9fc7dc514
@ -8189,6 +8189,7 @@ static int tg3_get_eeprom_len(struct net_device *dev)
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}
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static int tg3_nvram_read(struct tg3 *tp, u32 offset, u32 *val);
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static int tg3_nvram_read_le(struct tg3 *tp, u32 offset, __le32 *val);
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static int tg3_nvram_read_swab(struct tg3 *tp, u32 offset, u32 *val);
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static int tg3_get_eeprom(struct net_device *dev, struct ethtool_eeprom *eeprom, u8 *data)
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@ -8196,7 +8197,8 @@ static int tg3_get_eeprom(struct net_device *dev, struct ethtool_eeprom *eeprom,
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struct tg3 *tp = netdev_priv(dev);
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int ret;
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u8 *pd;
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u32 i, offset, len, val, b_offset, b_count;
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u32 i, offset, len, b_offset, b_count;
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__le32 val;
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if (tp->link_config.phy_is_low_power)
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return -EAGAIN;
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@ -8215,10 +8217,9 @@ static int tg3_get_eeprom(struct net_device *dev, struct ethtool_eeprom *eeprom,
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/* i.e. offset=1 len=2 */
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b_count = len;
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}
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ret = tg3_nvram_read(tp, offset-b_offset, &val);
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ret = tg3_nvram_read_le(tp, offset-b_offset, &val);
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if (ret)
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return ret;
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val = cpu_to_le32(val);
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memcpy(data, ((char*)&val) + b_offset, b_count);
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len -= b_count;
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offset += b_count;
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@ -8228,12 +8229,11 @@ static int tg3_get_eeprom(struct net_device *dev, struct ethtool_eeprom *eeprom,
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/* read bytes upto the last 4 byte boundary */
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pd = &data[eeprom->len];
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for (i = 0; i < (len - (len & 3)); i += 4) {
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ret = tg3_nvram_read(tp, offset + i, &val);
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ret = tg3_nvram_read_le(tp, offset + i, &val);
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if (ret) {
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eeprom->len += i;
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return ret;
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}
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val = cpu_to_le32(val);
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memcpy(pd + i, &val, 4);
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}
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eeprom->len += i;
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@ -8243,11 +8243,10 @@ static int tg3_get_eeprom(struct net_device *dev, struct ethtool_eeprom *eeprom,
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pd = &data[eeprom->len];
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b_count = len & 3;
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b_offset = offset + len - b_count;
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ret = tg3_nvram_read(tp, b_offset, &val);
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ret = tg3_nvram_read_le(tp, b_offset, &val);
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if (ret)
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return ret;
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val = cpu_to_le32(val);
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memcpy(pd, ((char*)&val), b_count);
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memcpy(pd, &val, b_count);
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eeprom->len += b_count;
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}
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return 0;
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@ -8259,8 +8258,9 @@ static int tg3_set_eeprom(struct net_device *dev, struct ethtool_eeprom *eeprom,
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{
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struct tg3 *tp = netdev_priv(dev);
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int ret;
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u32 offset, len, b_offset, odd_len, start, end;
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u32 offset, len, b_offset, odd_len;
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u8 *buf;
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__le32 start, end;
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if (tp->link_config.phy_is_low_power)
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return -EAGAIN;
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@ -8273,10 +8273,9 @@ static int tg3_set_eeprom(struct net_device *dev, struct ethtool_eeprom *eeprom,
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if ((b_offset = (offset & 3))) {
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/* adjustments to start on required 4 byte boundary */
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ret = tg3_nvram_read(tp, offset-b_offset, &start);
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ret = tg3_nvram_read_le(tp, offset-b_offset, &start);
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if (ret)
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return ret;
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start = cpu_to_le32(start);
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len += b_offset;
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offset &= ~3;
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if (len < 4)
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@ -8288,10 +8287,9 @@ static int tg3_set_eeprom(struct net_device *dev, struct ethtool_eeprom *eeprom,
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/* adjustments to end on required 4 byte boundary */
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odd_len = 1;
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len = (len + 3) & ~3;
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ret = tg3_nvram_read(tp, offset+len-4, &end);
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ret = tg3_nvram_read_le(tp, offset+len-4, &end);
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if (ret)
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return ret;
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end = cpu_to_le32(end);
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}
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buf = data;
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@ -8734,7 +8732,8 @@ static void tg3_get_ethtool_stats (struct net_device *dev,
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static int tg3_test_nvram(struct tg3 *tp)
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{
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u32 *buf, csum, magic;
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u32 csum, magic;
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__le32 *buf;
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int i, j, k, err = 0, size;
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if (tg3_nvram_read_swab(tp, 0, &magic) != 0)
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@ -8771,21 +8770,19 @@ static int tg3_test_nvram(struct tg3 *tp)
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err = -EIO;
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for (i = 0, j = 0; i < size; i += 4, j++) {
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u32 val;
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if ((err = tg3_nvram_read(tp, i, &val)) != 0)
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if ((err = tg3_nvram_read_le(tp, i, &buf[j])) != 0)
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break;
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buf[j] = cpu_to_le32(val);
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}
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if (i < size)
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goto out;
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/* Selfboot format */
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if ((cpu_to_be32(buf[0]) & TG3_EEPROM_MAGIC_FW_MSK) ==
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magic = swab32(le32_to_cpu(buf[0]));
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if ((magic & TG3_EEPROM_MAGIC_FW_MSK) ==
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TG3_EEPROM_MAGIC_FW) {
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u8 *buf8 = (u8 *) buf, csum8 = 0;
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if ((cpu_to_be32(buf[0]) & TG3_EEPROM_SB_REVISION_MASK) ==
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if ((magic & TG3_EEPROM_SB_REVISION_MASK) ==
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TG3_EEPROM_SB_REVISION_2) {
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/* For rev 2, the csum doesn't include the MBA. */
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for (i = 0; i < TG3_EEPROM_SB_F1R2_MBA_OFF; i++)
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@ -8806,7 +8803,7 @@ static int tg3_test_nvram(struct tg3 *tp)
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goto out;
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}
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if ((cpu_to_be32(buf[0]) & TG3_EEPROM_MAGIC_HW_MSK) ==
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if ((magic & TG3_EEPROM_MAGIC_HW_MSK) ==
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TG3_EEPROM_MAGIC_HW) {
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u8 data[NVRAM_SELFBOOT_DATA_SIZE];
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u8 parity[NVRAM_SELFBOOT_DATA_SIZE];
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@ -8852,12 +8849,12 @@ static int tg3_test_nvram(struct tg3 *tp)
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/* Bootstrap checksum at offset 0x10 */
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csum = calc_crc((unsigned char *) buf, 0x10);
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if(csum != cpu_to_le32(buf[0x10/4]))
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if(csum != le32_to_cpu(buf[0x10/4]))
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goto out;
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/* Manufacturing block starts at offset 0x74, checksum at 0xfc */
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csum = calc_crc((unsigned char *) &buf[0x74/4], 0x88);
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if (csum != cpu_to_le32(buf[0xfc/4]))
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if (csum != le32_to_cpu(buf[0xfc/4]))
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goto out;
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err = 0;
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@ -10171,6 +10168,15 @@ static int tg3_nvram_read(struct tg3 *tp, u32 offset, u32 *val)
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return ret;
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}
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static int tg3_nvram_read_le(struct tg3 *tp, u32 offset, __le32 *val)
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{
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u32 v;
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int res = tg3_nvram_read(tp, offset, &v);
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if (!res)
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*val = cpu_to_le32(v);
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return res;
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}
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static int tg3_nvram_read_swab(struct tg3 *tp, u32 offset, u32 *val)
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{
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int err;
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@ -10188,13 +10194,14 @@ static int tg3_nvram_write_block_using_eeprom(struct tg3 *tp,
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u32 val;
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for (i = 0; i < len; i += 4) {
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u32 addr, data;
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u32 addr;
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__le32 data;
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addr = offset + i;
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memcpy(&data, buf + i, 4);
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tw32(GRC_EEPROM_DATA, cpu_to_le32(data));
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tw32(GRC_EEPROM_DATA, le32_to_cpu(data));
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val = tr32(GRC_EEPROM_ADDR);
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tw32(GRC_EEPROM_ADDR, val | EEPROM_ADDR_COMPLETE);
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@ -10244,8 +10251,9 @@ static int tg3_nvram_write_block_unbuffered(struct tg3 *tp, u32 offset, u32 len,
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phy_addr = offset & ~pagemask;
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for (j = 0; j < pagesize; j += 4) {
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/* Almost certainly should be tg3_nvram_read_le */
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if ((ret = tg3_nvram_read(tp, phy_addr + j,
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(u32 *) (tmp + j))))
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(__le32 *) (tmp + j))))
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break;
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}
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if (ret)
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@ -10289,10 +10297,11 @@ static int tg3_nvram_write_block_unbuffered(struct tg3 *tp, u32 offset, u32 len,
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break;
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for (j = 0; j < pagesize; j += 4) {
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u32 data;
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__be32 data;
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data = *((u32 *) (tmp + j));
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tw32(NVRAM_WRDATA, cpu_to_be32(data));
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data = *((__be32 *) (tmp + j));
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/* swab32(le32_to_cpu(data)), actually */
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tw32(NVRAM_WRDATA, be32_to_cpu(data));
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tw32(NVRAM_ADDR, phy_addr + j);
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@ -10326,10 +10335,11 @@ static int tg3_nvram_write_block_buffered(struct tg3 *tp, u32 offset, u32 len,
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int i, ret = 0;
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for (i = 0; i < len; i += 4, offset += 4) {
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u32 data, page_off, phy_addr, nvram_cmd;
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u32 page_off, phy_addr, nvram_cmd;
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__be32 data;
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memcpy(&data, buf + i, 4);
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tw32(NVRAM_WRDATA, cpu_to_be32(data));
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tw32(NVRAM_WRDATA, be32_to_cpu(data));
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page_off = offset % tp->nvram_pagesize;
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@ -10831,6 +10841,7 @@ static void __devinit tg3_read_partno(struct tg3 *tp)
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vpd_cap = pci_find_capability(tp->pdev, PCI_CAP_ID_VPD);
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for (i = 0; i < 256; i += 4) {
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u32 tmp, j = 0;
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__le32 v;
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u16 tmp16;
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pci_write_config_word(tp->pdev, vpd_cap + PCI_VPD_ADDR,
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@ -10847,8 +10858,8 @@ static void __devinit tg3_read_partno(struct tg3 *tp)
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pci_read_config_dword(tp->pdev, vpd_cap + PCI_VPD_DATA,
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&tmp);
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tmp = cpu_to_le32(tmp);
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memcpy(&vpd_data[i], &tmp, 4);
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v = cpu_to_le32(tmp);
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memcpy(&vpd_data[i], &v, 4);
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}
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}
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@ -10941,11 +10952,11 @@ static void __devinit tg3_read_fw_ver(struct tg3 *tp)
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offset = offset + ver_offset - start;
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for (i = 0; i < 16; i += 4) {
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if (tg3_nvram_read(tp, offset + i, &val))
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__le32 v;
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if (tg3_nvram_read_le(tp, offset + i, &v))
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return;
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val = le32_to_cpu(val);
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memcpy(tp->fw_ver + i, &val, 4);
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memcpy(tp->fw_ver + i, &v, 4);
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}
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if (!(tp->tg3_flags & TG3_FLAG_ENABLE_ASF) ||
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@ -10983,19 +10994,19 @@ static void __devinit tg3_read_fw_ver(struct tg3 *tp)
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tp->fw_ver[bcnt++] = ' ';
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for (i = 0; i < 4; i++) {
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if (tg3_nvram_read(tp, offset, &val))
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__le32 v;
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if (tg3_nvram_read_le(tp, offset, &v))
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return;
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val = le32_to_cpu(val);
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offset += sizeof(val);
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offset += sizeof(v);
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if (bcnt > TG3_VER_SIZE - sizeof(val)) {
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memcpy(&tp->fw_ver[bcnt], &val, TG3_VER_SIZE - bcnt);
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if (bcnt > TG3_VER_SIZE - sizeof(v)) {
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memcpy(&tp->fw_ver[bcnt], &v, TG3_VER_SIZE - bcnt);
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break;
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}
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memcpy(&tp->fw_ver[bcnt], &val, sizeof(val));
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bcnt += sizeof(val);
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memcpy(&tp->fw_ver[bcnt], &v, sizeof(v));
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bcnt += sizeof(v);
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}
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tp->fw_ver[TG3_VER_SIZE - 1] = 0;
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