Commit 56c9054f authored by Nick Kossifidis's avatar Nick Kossifidis Committed by John W. Linville
Browse files

ath5k: Fixes for PCI-E cards



 * Fix nic_wakeup for PCI-E chips (don't set AR5K_RESET_CTL_PCI bit)

 * Fix dma size setting for PCI-E chips (thanx to Bob Copeland).

Changes-licensed-under: ISC
Signed-off-by: default avatarNick Kossifidis <mickflemm@gmail.com>
Signed-off-by: default avatarLuis R. Rodriguez <mcgrof@winlab.rutgers.edu>
Signed-off-by: default avatarJohn W. Linville <linville@tuxdriver.com>
parent 74693a7f
......@@ -171,13 +171,13 @@ struct ath5k_srev_name {
#define AR5K_SREV_VER_AR5213A 0x59
#define AR5K_SREV_VER_AR2413 0x78
#define AR5K_SREV_VER_AR2414 0x79
#define AR5K_SREV_VER_AR2424 0xa0
#define AR5K_SREV_VER_AR5424 0xa3
#define AR5K_SREV_VER_AR2424 0xa0 /* PCI-E */
#define AR5K_SREV_VER_AR5424 0xa3 /* PCI-E */
#define AR5K_SREV_VER_AR5413 0xa4
#define AR5K_SREV_VER_AR5414 0xa5
#define AR5K_SREV_VER_AR5416 0xc0 /* ? */
#define AR5K_SREV_VER_AR5418 0xca
#define AR5K_SREV_VER_AR2425 0xe2
#define AR5K_SREV_VER_AR5416 0xc0 /* PCI-E */
#define AR5K_SREV_VER_AR5418 0xca /* PCI-E */
#define AR5K_SREV_VER_AR2425 0xe2 /* PCI-E */
#define AR5K_SREV_RAD_5110 0x00
#define AR5K_SREV_RAD_5111 0x10
......
......@@ -300,7 +300,8 @@ err:
*/
static int ath5k_hw_nic_wakeup(struct ath5k_hw *ah, int flags, bool initial)
{
u32 turbo, mode, clock;
struct pci_dev *pdev = ah->ah_sc->pdev;
u32 turbo, mode, clock, bus_flags;
int ret;
turbo = 0;
......@@ -377,9 +378,15 @@ static int ath5k_hw_nic_wakeup(struct ath5k_hw *ah, int flags, bool initial)
AR5K_PHY_TURBO);
}
/* ...reset chipset and PCI device */
if (ah->ah_single_chip == false && ath5k_hw_nic_reset(ah,
AR5K_RESET_CTL_CHIP | AR5K_RESET_CTL_PCI)) {
/* reseting PCI on PCI-E cards results card to hang
* and always return 0xffff... so we ingore that flag
* for PCI-E cards */
bus_flags = (pdev->is_pcie) ? 0 : AR5K_RESET_CTL_PCI;
/* Reset chipset */
ret = ath5k_hw_nic_reset(ah, AR5K_RESET_CTL_PCU |
AR5K_RESET_CTL_BASEBAND | bus_flags);
if (ret) {
ATH5K_ERR(ah->ah_sc, "failed to reset the MAC Chip + PCI\n");
return -EIO;
}
......@@ -588,7 +595,8 @@ int ath5k_hw_reset(struct ath5k_hw *ah, enum ieee80211_if_types op_mode,
struct ieee80211_channel *channel, bool change_channel)
{
struct ath5k_eeprom_info *ee = &ah->ah_capabilities.cap_eeprom;
u32 data, s_seq, s_ant, s_led[3];
struct pci_dev *pdev = ah->ah_sc->pdev;
u32 data, s_seq, s_ant, s_led[3], dma_size;
unsigned int i, mode, freq, ee_mode, ant[2];
int ret;
......@@ -900,13 +908,24 @@ int ath5k_hw_reset(struct ath5k_hw *ah, enum ieee80211_if_types op_mode,
/*
* Set Rx/Tx DMA Configuration
*(passing dma size not available on 5210)
*
* Set maximum DMA size (512) except for PCI-E cards since
* it causes rx overruns and tx errors (tested on 5424 but since
* rx overruns also occur on 5416/5418 with madwifi we set 128
* for all PCI-E cards to be safe).
*
* In dumps this is 128 for allchips.
*
* XXX: need to check 5210 for this
* TODO: Check out tx triger level, it's always 64 on dumps but I
* guess we can tweak it and see how it goes ;-)
*/
dma_size = (pdev->is_pcie) ? AR5K_DMASIZE_128B : AR5K_DMASIZE_512B;
if (ah->ah_version != AR5K_AR5210) {
AR5K_REG_WRITE_BITS(ah, AR5K_TXCFG, AR5K_TXCFG_SDMAMR,
AR5K_DMASIZE_512B | AR5K_TXCFG_DMASIZE);
AR5K_REG_WRITE_BITS(ah, AR5K_RXCFG, AR5K_RXCFG_SDMAMW,
AR5K_DMASIZE_512B);
AR5K_REG_WRITE_BITS(ah, AR5K_TXCFG,
AR5K_TXCFG_SDMAMR, dma_size);
AR5K_REG_WRITE_BITS(ah, AR5K_RXCFG,
AR5K_RXCFG_SDMAMW, dma_size);
}
/*
......
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