diff options
Diffstat (limited to 'drivers/net/wireless/rt2x00/rt2800pci.c')
| -rw-r--r-- | drivers/net/wireless/rt2x00/rt2800pci.c | 229 |
1 files changed, 99 insertions, 130 deletions
diff --git a/drivers/net/wireless/rt2x00/rt2800pci.c b/drivers/net/wireless/rt2x00/rt2800pci.c index 6f11760117da..39b3846fa340 100644 --- a/drivers/net/wireless/rt2x00/rt2800pci.c +++ b/drivers/net/wireless/rt2x00/rt2800pci.c @@ -31,7 +31,6 @@ Supported chipsets: RT2800E & RT2800ED. */ -#include <linux/crc-ccitt.h> #include <linux/delay.h> #include <linux/etherdevice.h> #include <linux/init.h> @@ -192,82 +191,14 @@ static char *rt2800pci_get_firmware_name(struct rt2x00_dev *rt2x00dev) return FIRMWARE_RT2860; } -static int rt2800pci_check_firmware(struct rt2x00_dev *rt2x00dev, +static int rt2800pci_write_firmware(struct rt2x00_dev *rt2x00dev, const u8 *data, const size_t len) { - u16 fw_crc; - u16 crc; - - /* - * Only support 8kb firmware files. - */ - if (len != 8192) - return FW_BAD_LENGTH; - - /* - * The last 2 bytes in the firmware array are the crc checksum itself, - * this means that we should never pass those 2 bytes to the crc - * algorithm. - */ - fw_crc = (data[len - 2] << 8 | data[len - 1]); - - /* - * Use the crc ccitt algorithm. - * This will return the same value as the legacy driver which - * used bit ordering reversion on the both the firmware bytes - * before input input as well as on the final output. - * Obviously using crc ccitt directly is much more efficient. - */ - crc = crc_ccitt(~0, data, len - 2); - - /* - * There is a small difference between the crc-itu-t + bitrev and - * the crc-ccitt crc calculation. In the latter method the 2 bytes - * will be swapped, use swab16 to convert the crc to the correct - * value. - */ - crc = swab16(crc); - - return (fw_crc == crc) ? FW_OK : FW_BAD_CRC; -} - -static int rt2800pci_load_firmware(struct rt2x00_dev *rt2x00dev, - const u8 *data, const size_t len) -{ - unsigned int i; u32 reg; - /* - * Wait for stable hardware. - */ - for (i = 0; i < REGISTER_BUSY_COUNT; i++) { - rt2800_register_read(rt2x00dev, MAC_CSR0, ®); - if (reg && reg != ~0) - break; - msleep(1); - } - - if (i == REGISTER_BUSY_COUNT) { - ERROR(rt2x00dev, "Unstable hardware.\n"); - return -EBUSY; - } - - rt2800_register_write(rt2x00dev, PWR_PIN_CFG, 0x00000002); rt2800_register_write(rt2x00dev, AUTOWAKEUP_CFG, 0x00000000); /* - * Disable DMA, will be reenabled later when enabling - * the radio. - */ - rt2800_register_read(rt2x00dev, WPDMA_GLO_CFG, ®); - rt2x00_set_field32(®, WPDMA_GLO_CFG_ENABLE_TX_DMA, 0); - rt2x00_set_field32(®, WPDMA_GLO_CFG_TX_DMA_BUSY, 0); - rt2x00_set_field32(®, WPDMA_GLO_CFG_ENABLE_RX_DMA, 0); - rt2x00_set_field32(®, WPDMA_GLO_CFG_RX_DMA_BUSY, 0); - rt2x00_set_field32(®, WPDMA_GLO_CFG_TX_WRITEBACK_DONE, 1); - rt2800_register_write(rt2x00dev, WPDMA_GLO_CFG, reg); - - /* * enable Host program ram write selection */ reg = 0; @@ -278,34 +209,11 @@ static int rt2800pci_load_firmware(struct rt2x00_dev *rt2x00dev, * Write firmware to device. */ rt2800_register_multiwrite(rt2x00dev, FIRMWARE_IMAGE_BASE, - data, len); + data, len); rt2800_register_write(rt2x00dev, PBF_SYS_CTRL, 0x00000); rt2800_register_write(rt2x00dev, PBF_SYS_CTRL, 0x00001); - /* - * Wait for device to stabilize. - */ - for (i = 0; i < REGISTER_BUSY_COUNT; i++) { - rt2800_register_read(rt2x00dev, PBF_SYS_CTRL, ®); - if (rt2x00_get_field32(reg, PBF_SYS_CTRL_READY)) - break; - msleep(1); - } - - if (i == REGISTER_BUSY_COUNT) { - ERROR(rt2x00dev, "PBF system register not ready.\n"); - return -EBUSY; - } - - /* - * Disable interrupts - */ - rt2x00dev->ops->lib->set_device_state(rt2x00dev, STATE_RADIO_IRQ_OFF); - - /* - * Initialize BBP R/W access agent - */ rt2800_register_write(rt2x00dev, H2M_BBP_AGENT, 0); rt2800_register_write(rt2x00dev, H2M_MAILBOX_CSR, 0); @@ -422,7 +330,8 @@ static void rt2800pci_toggle_rx(struct rt2x00_dev *rt2x00dev, static void rt2800pci_toggle_irq(struct rt2x00_dev *rt2x00dev, enum dev_state state) { - int mask = (state == STATE_RADIO_IRQ_ON); + int mask = (state == STATE_RADIO_IRQ_ON) || + (state == STATE_RADIO_IRQ_ON_ISR); u32 reg; /* @@ -631,7 +540,9 @@ static int rt2800pci_set_device_state(struct rt2x00_dev *rt2x00dev, rt2800pci_toggle_rx(rt2x00dev, state); break; case STATE_RADIO_IRQ_ON: + case STATE_RADIO_IRQ_ON_ISR: case STATE_RADIO_IRQ_OFF: + case STATE_RADIO_IRQ_OFF_ISR: rt2800pci_toggle_irq(rt2x00dev, state); break; case STATE_DEEP_SLEEP: @@ -805,7 +716,7 @@ static void rt2800pci_fill_rxdone(struct queue_entry *entry, /* * Process the RXWI structure that is at the start of the buffer. */ - rt2800_process_rxwi(entry->skb, rxdesc); + rt2800_process_rxwi(entry, rxdesc); /* * Set RX IDX in register to inform hardware that we have handled @@ -929,42 +840,74 @@ static void rt2800pci_wakeup(struct rt2x00_dev *rt2x00dev) rt2800_config(rt2x00dev, &libconf, IEEE80211_CONF_CHANGE_PS); } -static irqreturn_t rt2800pci_interrupt(int irq, void *dev_instance) +static irqreturn_t rt2800pci_interrupt_thread(int irq, void *dev_instance) { struct rt2x00_dev *rt2x00dev = dev_instance; - u32 reg; - - /* Read status and ACK all interrupts */ - rt2800_register_read(rt2x00dev, INT_SOURCE_CSR, ®); - rt2800_register_write(rt2x00dev, INT_SOURCE_CSR, reg); + u32 reg = rt2x00dev->irqvalue[0]; - if (!reg) - return IRQ_NONE; + /* + * 1 - Pre TBTT interrupt. + */ + if (rt2x00_get_field32(reg, INT_SOURCE_CSR_PRE_TBTT)) + rt2x00lib_pretbtt(rt2x00dev); - if (!test_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags)) - return IRQ_HANDLED; + /* + * 2 - Beacondone interrupt. + */ + if (rt2x00_get_field32(reg, INT_SOURCE_CSR_TBTT)) + rt2x00lib_beacondone(rt2x00dev); /* - * 1 - Rx ring done interrupt. + * 3 - Rx ring done interrupt. */ if (rt2x00_get_field32(reg, INT_SOURCE_CSR_RX_DONE)) rt2x00pci_rxdone(rt2x00dev); + /* + * 4 - Tx done interrupt. + */ if (rt2x00_get_field32(reg, INT_SOURCE_CSR_TX_FIFO_STATUS)) rt2800pci_txdone(rt2x00dev); /* - * Current beacon was sent out, fetch the next one + * 5 - Auto wakeup interrupt. */ - if (rt2x00_get_field32(reg, INT_SOURCE_CSR_TBTT)) - rt2x00lib_beacondone(rt2x00dev); - if (rt2x00_get_field32(reg, INT_SOURCE_CSR_AUTO_WAKEUP)) rt2800pci_wakeup(rt2x00dev); + /* Enable interrupts again. */ + rt2x00dev->ops->lib->set_device_state(rt2x00dev, + STATE_RADIO_IRQ_ON_ISR); + return IRQ_HANDLED; } +static irqreturn_t rt2800pci_interrupt(int irq, void *dev_instance) +{ + struct rt2x00_dev *rt2x00dev = dev_instance; + u32 reg; + + /* Read status and ACK all interrupts */ + rt2800_register_read(rt2x00dev, INT_SOURCE_CSR, ®); + rt2800_register_write(rt2x00dev, INT_SOURCE_CSR, reg); + + if (!reg) + return IRQ_NONE; + + if (!test_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags)) + return IRQ_HANDLED; + + /* Store irqvalue for use in the interrupt thread. */ + rt2x00dev->irqvalue[0] = reg; + + /* Disable interrupts, will be enabled again in the interrupt thread. */ + rt2x00dev->ops->lib->set_device_state(rt2x00dev, + STATE_RADIO_IRQ_OFF_ISR); + + + return IRQ_WAKE_THREAD; +} + /* * Device probe functions. */ @@ -983,26 +926,10 @@ static int rt2800pci_validate_eeprom(struct rt2x00_dev *rt2x00dev) return rt2800_validate_eeprom(rt2x00dev); } -static const struct rt2800_ops rt2800pci_rt2800_ops = { - .register_read = rt2x00pci_register_read, - .register_read_lock = rt2x00pci_register_read, /* same for PCI */ - .register_write = rt2x00pci_register_write, - .register_write_lock = rt2x00pci_register_write, /* same for PCI */ - - .register_multiread = rt2x00pci_register_multiread, - .register_multiwrite = rt2x00pci_register_multiwrite, - - .regbusy_read = rt2x00pci_regbusy_read, - - .drv_init_registers = rt2800pci_init_registers, -}; - static int rt2800pci_probe_hw(struct rt2x00_dev *rt2x00dev) { int retval; - rt2x00dev->priv = (void *)&rt2800pci_rt2800_ops; - /* * Allocate eeprom data. */ @@ -1029,6 +956,12 @@ static int rt2800pci_probe_hw(struct rt2x00_dev *rt2x00dev) __set_bit(DRIVER_SUPPORT_CONTROL_FILTER_PSPOLL, &rt2x00dev->flags); /* + * This device has a pre tbtt interrupt and thus fetches + * a new beacon directly prior to transmission. + */ + __set_bit(DRIVER_SUPPORT_PRE_TBTT_INTERRUPT, &rt2x00dev->flags); + + /* * This device requires firmware. */ if (!rt2x00_is_soc(rt2x00dev)) @@ -1037,6 +970,7 @@ static int rt2800pci_probe_hw(struct rt2x00_dev *rt2x00dev) __set_bit(DRIVER_REQUIRE_L2PAD, &rt2x00dev->flags); if (!modparam_nohwcrypt) __set_bit(CONFIG_SUPPORT_HW_CRYPTO, &rt2x00dev->flags); + __set_bit(DRIVER_SUPPORT_LINK_TUNING, &rt2x00dev->flags); /* * Set the rssi offset. @@ -1046,12 +980,46 @@ static int rt2800pci_probe_hw(struct rt2x00_dev *rt2x00dev) return 0; } +static const struct ieee80211_ops rt2800pci_mac80211_ops = { + .tx = rt2x00mac_tx, + .start = rt2x00mac_start, + .stop = rt2x00mac_stop, + .add_interface = rt2x00mac_add_interface, + .remove_interface = rt2x00mac_remove_interface, + .config = rt2x00mac_config, + .configure_filter = rt2x00mac_configure_filter, + .set_key = rt2x00mac_set_key, + .sw_scan_start = rt2x00mac_sw_scan_start, + .sw_scan_complete = rt2x00mac_sw_scan_complete, + .get_stats = rt2x00mac_get_stats, + .get_tkip_seq = rt2800_get_tkip_seq, + .set_rts_threshold = rt2800_set_rts_threshold, + .bss_info_changed = rt2x00mac_bss_info_changed, + .conf_tx = rt2800_conf_tx, + .get_tsf = rt2800_get_tsf, + .rfkill_poll = rt2x00mac_rfkill_poll, + .ampdu_action = rt2800_ampdu_action, +}; + +static const struct rt2800_ops rt2800pci_rt2800_ops = { + .register_read = rt2x00pci_register_read, + .register_read_lock = rt2x00pci_register_read, /* same for PCI */ + .register_write = rt2x00pci_register_write, + .register_write_lock = rt2x00pci_register_write, /* same for PCI */ + .register_multiread = rt2x00pci_register_multiread, + .register_multiwrite = rt2x00pci_register_multiwrite, + .regbusy_read = rt2x00pci_regbusy_read, + .drv_write_firmware = rt2800pci_write_firmware, + .drv_init_registers = rt2800pci_init_registers, +}; + static const struct rt2x00lib_ops rt2800pci_rt2x00_ops = { .irq_handler = rt2800pci_interrupt, + .irq_handler_thread = rt2800pci_interrupt_thread, .probe_hw = rt2800pci_probe_hw, .get_firmware_name = rt2800pci_get_firmware_name, - .check_firmware = rt2800pci_check_firmware, - .load_firmware = rt2800pci_load_firmware, + .check_firmware = rt2800_check_firmware, + .load_firmware = rt2800_load_firmware, .initialize = rt2x00pci_initialize, .uninitialize = rt2x00pci_uninitialize, .get_entry_state = rt2800pci_get_entry_state, @@ -1109,7 +1077,8 @@ static const struct rt2x00_ops rt2800pci_ops = { .tx = &rt2800pci_queue_tx, .bcn = &rt2800pci_queue_bcn, .lib = &rt2800pci_rt2x00_ops, - .hw = &rt2800_mac80211_ops, + .drv = &rt2800pci_rt2800_ops, + .hw = &rt2800pci_mac80211_ops, #ifdef CONFIG_RT2X00_LIB_DEBUGFS .debugfs = &rt2800_rt2x00debug, #endif /* CONFIG_RT2X00_LIB_DEBUGFS */ |