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path: root/drivers/net/wireless/rt2x00/rt2800pci.c
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Diffstat (limited to 'drivers/net/wireless/rt2x00/rt2800pci.c')
-rw-r--r--drivers/net/wireless/rt2x00/rt2800pci.c229
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 @@
31 Supported chipsets: RT2800E & RT2800ED. 31 Supported chipsets: RT2800E & RT2800ED.
32 */ 32 */
33 33
34#include <linux/crc-ccitt.h>
35#include <linux/delay.h> 34#include <linux/delay.h>
36#include <linux/etherdevice.h> 35#include <linux/etherdevice.h>
37#include <linux/init.h> 36#include <linux/init.h>
@@ -192,82 +191,14 @@ static char *rt2800pci_get_firmware_name(struct rt2x00_dev *rt2x00dev)
192 return FIRMWARE_RT2860; 191 return FIRMWARE_RT2860;
193} 192}
194 193
195static int rt2800pci_check_firmware(struct rt2x00_dev *rt2x00dev, 194static int rt2800pci_write_firmware(struct rt2x00_dev *rt2x00dev,
196 const u8 *data, const size_t len) 195 const u8 *data, const size_t len)
197{ 196{
198 u16 fw_crc;
199 u16 crc;
200
201 /*
202 * Only support 8kb firmware files.
203 */
204 if (len != 8192)
205 return FW_BAD_LENGTH;
206
207 /*
208 * The last 2 bytes in the firmware array are the crc checksum itself,
209 * this means that we should never pass those 2 bytes to the crc
210 * algorithm.
211 */
212 fw_crc = (data[len - 2] << 8 | data[len - 1]);
213
214 /*
215 * Use the crc ccitt algorithm.
216 * This will return the same value as the legacy driver which
217 * used bit ordering reversion on the both the firmware bytes
218 * before input input as well as on the final output.
219 * Obviously using crc ccitt directly is much more efficient.
220 */
221 crc = crc_ccitt(~0, data, len - 2);
222
223 /*
224 * There is a small difference between the crc-itu-t + bitrev and
225 * the crc-ccitt crc calculation. In the latter method the 2 bytes
226 * will be swapped, use swab16 to convert the crc to the correct
227 * value.
228 */
229 crc = swab16(crc);
230
231 return (fw_crc == crc) ? FW_OK : FW_BAD_CRC;
232}
233
234static int rt2800pci_load_firmware(struct rt2x00_dev *rt2x00dev,
235 const u8 *data, const size_t len)
236{
237 unsigned int i;
238 u32 reg; 197 u32 reg;
239 198
240 /*
241 * Wait for stable hardware.
242 */
243 for (i = 0; i < REGISTER_BUSY_COUNT; i++) {
244 rt2800_register_read(rt2x00dev, MAC_CSR0, &reg);
245 if (reg && reg != ~0)
246 break;
247 msleep(1);
248 }
249
250 if (i == REGISTER_BUSY_COUNT) {
251 ERROR(rt2x00dev, "Unstable hardware.\n");
252 return -EBUSY;
253 }
254
255 rt2800_register_write(rt2x00dev, PWR_PIN_CFG, 0x00000002);
256 rt2800_register_write(rt2x00dev, AUTOWAKEUP_CFG, 0x00000000); 199 rt2800_register_write(rt2x00dev, AUTOWAKEUP_CFG, 0x00000000);
257 200
258 /* 201 /*
259 * Disable DMA, will be reenabled later when enabling
260 * the radio.
261 */
262 rt2800_register_read(rt2x00dev, WPDMA_GLO_CFG, &reg);
263 rt2x00_set_field32(&reg, WPDMA_GLO_CFG_ENABLE_TX_DMA, 0);
264 rt2x00_set_field32(&reg, WPDMA_GLO_CFG_TX_DMA_BUSY, 0);
265 rt2x00_set_field32(&reg, WPDMA_GLO_CFG_ENABLE_RX_DMA, 0);
266 rt2x00_set_field32(&reg, WPDMA_GLO_CFG_RX_DMA_BUSY, 0);
267 rt2x00_set_field32(&reg, WPDMA_GLO_CFG_TX_WRITEBACK_DONE, 1);
268 rt2800_register_write(rt2x00dev, WPDMA_GLO_CFG, reg);
269
270 /*
271 * enable Host program ram write selection 202 * enable Host program ram write selection
272 */ 203 */
273 reg = 0; 204 reg = 0;
@@ -278,34 +209,11 @@ static int rt2800pci_load_firmware(struct rt2x00_dev *rt2x00dev,
278 * Write firmware to device. 209 * Write firmware to device.
279 */ 210 */
280 rt2800_register_multiwrite(rt2x00dev, FIRMWARE_IMAGE_BASE, 211 rt2800_register_multiwrite(rt2x00dev, FIRMWARE_IMAGE_BASE,
281 data, len); 212 data, len);
282 213
283 rt2800_register_write(rt2x00dev, PBF_SYS_CTRL, 0x00000); 214 rt2800_register_write(rt2x00dev, PBF_SYS_CTRL, 0x00000);
284 rt2800_register_write(rt2x00dev, PBF_SYS_CTRL, 0x00001); 215 rt2800_register_write(rt2x00dev, PBF_SYS_CTRL, 0x00001);
285 216
286 /*
287 * Wait for device to stabilize.
288 */
289 for (i = 0; i < REGISTER_BUSY_COUNT; i++) {
290 rt2800_register_read(rt2x00dev, PBF_SYS_CTRL, &reg);
291 if (rt2x00_get_field32(reg, PBF_SYS_CTRL_READY))
292 break;
293 msleep(1);
294 }
295
296 if (i == REGISTER_BUSY_COUNT) {
297 ERROR(rt2x00dev, "PBF system register not ready.\n");
298 return -EBUSY;
299 }
300
301 /*
302 * Disable interrupts
303 */
304 rt2x00dev->ops->lib->set_device_state(rt2x00dev, STATE_RADIO_IRQ_OFF);
305
306 /*
307 * Initialize BBP R/W access agent
308 */
309 rt2800_register_write(rt2x00dev, H2M_BBP_AGENT, 0); 217 rt2800_register_write(rt2x00dev, H2M_BBP_AGENT, 0);
310 rt2800_register_write(rt2x00dev, H2M_MAILBOX_CSR, 0); 218 rt2800_register_write(rt2x00dev, H2M_MAILBOX_CSR, 0);
311 219
@@ -422,7 +330,8 @@ static void rt2800pci_toggle_rx(struct rt2x00_dev *rt2x00dev,
422static void rt2800pci_toggle_irq(struct rt2x00_dev *rt2x00dev, 330static void rt2800pci_toggle_irq(struct rt2x00_dev *rt2x00dev,
423 enum dev_state state) 331 enum dev_state state)
424{ 332{
425 int mask = (state == STATE_RADIO_IRQ_ON); 333 int mask = (state == STATE_RADIO_IRQ_ON) ||
334 (state == STATE_RADIO_IRQ_ON_ISR);
426 u32 reg; 335 u32 reg;
427 336
428 /* 337 /*
@@ -631,7 +540,9 @@ static int rt2800pci_set_device_state(struct rt2x00_dev *rt2x00dev,
631 rt2800pci_toggle_rx(rt2x00dev, state); 540 rt2800pci_toggle_rx(rt2x00dev, state);
632 break; 541 break;
633 case STATE_RADIO_IRQ_ON: 542 case STATE_RADIO_IRQ_ON:
543 case STATE_RADIO_IRQ_ON_ISR:
634 case STATE_RADIO_IRQ_OFF: 544 case STATE_RADIO_IRQ_OFF:
545 case STATE_RADIO_IRQ_OFF_ISR:
635 rt2800pci_toggle_irq(rt2x00dev, state); 546 rt2800pci_toggle_irq(rt2x00dev, state);
636 break; 547 break;
637 case STATE_DEEP_SLEEP: 548 case STATE_DEEP_SLEEP:
@@ -805,7 +716,7 @@ static void rt2800pci_fill_rxdone(struct queue_entry *entry,
805 /* 716 /*
806 * Process the RXWI structure that is at the start of the buffer. 717 * Process the RXWI structure that is at the start of the buffer.
807 */ 718 */
808 rt2800_process_rxwi(entry->skb, rxdesc); 719 rt2800_process_rxwi(entry, rxdesc);
809 720
810 /* 721 /*
811 * Set RX IDX in register to inform hardware that we have handled 722 * Set RX IDX in register to inform hardware that we have handled
@@ -929,42 +840,74 @@ static void rt2800pci_wakeup(struct rt2x00_dev *rt2x00dev)
929 rt2800_config(rt2x00dev, &libconf, IEEE80211_CONF_CHANGE_PS); 840 rt2800_config(rt2x00dev, &libconf, IEEE80211_CONF_CHANGE_PS);
930} 841}
931 842
932static irqreturn_t rt2800pci_interrupt(int irq, void *dev_instance) 843static irqreturn_t rt2800pci_interrupt_thread(int irq, void *dev_instance)
933{ 844{
934 struct rt2x00_dev *rt2x00dev = dev_instance; 845 struct rt2x00_dev *rt2x00dev = dev_instance;
935 u32 reg; 846 u32 reg = rt2x00dev->irqvalue[0];
936
937 /* Read status and ACK all interrupts */
938 rt2800_register_read(rt2x00dev, INT_SOURCE_CSR, &reg);
939 rt2800_register_write(rt2x00dev, INT_SOURCE_CSR, reg);
940 847
941 if (!reg) 848 /*
942 return IRQ_NONE; 849 * 1 - Pre TBTT interrupt.
850 */
851 if (rt2x00_get_field32(reg, INT_SOURCE_CSR_PRE_TBTT))
852 rt2x00lib_pretbtt(rt2x00dev);
943 853
944 if (!test_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags)) 854 /*
945 return IRQ_HANDLED; 855 * 2 - Beacondone interrupt.
856 */
857 if (rt2x00_get_field32(reg, INT_SOURCE_CSR_TBTT))
858 rt2x00lib_beacondone(rt2x00dev);
946 859
947 /* 860 /*
948 * 1 - Rx ring done interrupt. 861 * 3 - Rx ring done interrupt.
949 */ 862 */
950 if (rt2x00_get_field32(reg, INT_SOURCE_CSR_RX_DONE)) 863 if (rt2x00_get_field32(reg, INT_SOURCE_CSR_RX_DONE))
951 rt2x00pci_rxdone(rt2x00dev); 864 rt2x00pci_rxdone(rt2x00dev);
952 865
866 /*
867 * 4 - Tx done interrupt.
868 */
953 if (rt2x00_get_field32(reg, INT_SOURCE_CSR_TX_FIFO_STATUS)) 869 if (rt2x00_get_field32(reg, INT_SOURCE_CSR_TX_FIFO_STATUS))
954 rt2800pci_txdone(rt2x00dev); 870 rt2800pci_txdone(rt2x00dev);
955 871
956 /* 872 /*
957 * Current beacon was sent out, fetch the next one 873 * 5 - Auto wakeup interrupt.
958 */ 874 */
959 if (rt2x00_get_field32(reg, INT_SOURCE_CSR_TBTT))
960 rt2x00lib_beacondone(rt2x00dev);
961
962 if (rt2x00_get_field32(reg, INT_SOURCE_CSR_AUTO_WAKEUP)) 875 if (rt2x00_get_field32(reg, INT_SOURCE_CSR_AUTO_WAKEUP))
963 rt2800pci_wakeup(rt2x00dev); 876 rt2800pci_wakeup(rt2x00dev);
964 877
878 /* Enable interrupts again. */
879 rt2x00dev->ops->lib->set_device_state(rt2x00dev,
880 STATE_RADIO_IRQ_ON_ISR);
881
965 return IRQ_HANDLED; 882 return IRQ_HANDLED;
966} 883}
967 884
885static irqreturn_t rt2800pci_interrupt(int irq, void *dev_instance)
886{
887 struct rt2x00_dev *rt2x00dev = dev_instance;
888 u32 reg;
889
890 /* Read status and ACK all interrupts */
891 rt2800_register_read(rt2x00dev, INT_SOURCE_CSR, &reg);
892 rt2800_register_write(rt2x00dev, INT_SOURCE_CSR, reg);
893
894 if (!reg)
895 return IRQ_NONE;
896
897 if (!test_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags))
898 return IRQ_HANDLED;
899
900 /* Store irqvalue for use in the interrupt thread. */
901 rt2x00dev->irqvalue[0] = reg;
902
903 /* Disable interrupts, will be enabled again in the interrupt thread. */
904 rt2x00dev->ops->lib->set_device_state(rt2x00dev,
905 STATE_RADIO_IRQ_OFF_ISR);
906
907
908 return IRQ_WAKE_THREAD;
909}
910
968/* 911/*
969 * Device probe functions. 912 * Device probe functions.
970 */ 913 */
@@ -983,26 +926,10 @@ static int rt2800pci_validate_eeprom(struct rt2x00_dev *rt2x00dev)
983 return rt2800_validate_eeprom(rt2x00dev); 926 return rt2800_validate_eeprom(rt2x00dev);
984} 927}
985 928
986static const struct rt2800_ops rt2800pci_rt2800_ops = {
987 .register_read = rt2x00pci_register_read,
988 .register_read_lock = rt2x00pci_register_read, /* same for PCI */
989 .register_write = rt2x00pci_register_write,
990 .register_write_lock = rt2x00pci_register_write, /* same for PCI */
991
992 .register_multiread = rt2x00pci_register_multiread,
993 .register_multiwrite = rt2x00pci_register_multiwrite,
994
995 .regbusy_read = rt2x00pci_regbusy_read,
996
997 .drv_init_registers = rt2800pci_init_registers,
998};
999
1000static int rt2800pci_probe_hw(struct rt2x00_dev *rt2x00dev) 929static int rt2800pci_probe_hw(struct rt2x00_dev *rt2x00dev)
1001{ 930{
1002 int retval; 931 int retval;
1003 932
1004 rt2x00dev->priv = (void *)&rt2800pci_rt2800_ops;
1005
1006 /* 933 /*
1007 * Allocate eeprom data. 934 * Allocate eeprom data.
1008 */ 935 */
@@ -1029,6 +956,12 @@ static int rt2800pci_probe_hw(struct rt2x00_dev *rt2x00dev)
1029 __set_bit(DRIVER_SUPPORT_CONTROL_FILTER_PSPOLL, &rt2x00dev->flags); 956 __set_bit(DRIVER_SUPPORT_CONTROL_FILTER_PSPOLL, &rt2x00dev->flags);
1030 957
1031 /* 958 /*
959 * This device has a pre tbtt interrupt and thus fetches
960 * a new beacon directly prior to transmission.
961 */
962 __set_bit(DRIVER_SUPPORT_PRE_TBTT_INTERRUPT, &rt2x00dev->flags);
963
964 /*
1032 * This device requires firmware. 965 * This device requires firmware.
1033 */ 966 */
1034 if (!rt2x00_is_soc(rt2x00dev)) 967 if (!rt2x00_is_soc(rt2x00dev))
@@ -1037,6 +970,7 @@ static int rt2800pci_probe_hw(struct rt2x00_dev *rt2x00dev)
1037 __set_bit(DRIVER_REQUIRE_L2PAD, &rt2x00dev->flags); 970 __set_bit(DRIVER_REQUIRE_L2PAD, &rt2x00dev->flags);
1038 if (!modparam_nohwcrypt) 971 if (!modparam_nohwcrypt)
1039 __set_bit(CONFIG_SUPPORT_HW_CRYPTO, &rt2x00dev->flags); 972 __set_bit(CONFIG_SUPPORT_HW_CRYPTO, &rt2x00dev->flags);
973 __set_bit(DRIVER_SUPPORT_LINK_TUNING, &rt2x00dev->flags);
1040 974
1041 /* 975 /*
1042 * Set the rssi offset. 976 * Set the rssi offset.
@@ -1046,12 +980,46 @@ static int rt2800pci_probe_hw(struct rt2x00_dev *rt2x00dev)
1046 return 0; 980 return 0;
1047} 981}
1048 982
983static const struct ieee80211_ops rt2800pci_mac80211_ops = {
984 .tx = rt2x00mac_tx,
985 .start = rt2x00mac_start,
986 .stop = rt2x00mac_stop,
987 .add_interface = rt2x00mac_add_interface,
988 .remove_interface = rt2x00mac_remove_interface,
989 .config = rt2x00mac_config,
990 .configure_filter = rt2x00mac_configure_filter,
991 .set_key = rt2x00mac_set_key,
992 .sw_scan_start = rt2x00mac_sw_scan_start,
993 .sw_scan_complete = rt2x00mac_sw_scan_complete,
994 .get_stats = rt2x00mac_get_stats,
995 .get_tkip_seq = rt2800_get_tkip_seq,
996 .set_rts_threshold = rt2800_set_rts_threshold,
997 .bss_info_changed = rt2x00mac_bss_info_changed,
998 .conf_tx = rt2800_conf_tx,
999 .get_tsf = rt2800_get_tsf,
1000 .rfkill_poll = rt2x00mac_rfkill_poll,
1001 .ampdu_action = rt2800_ampdu_action,
1002};
1003
1004static const struct rt2800_ops rt2800pci_rt2800_ops = {
1005 .register_read = rt2x00pci_register_read,
1006 .register_read_lock = rt2x00pci_register_read, /* same for PCI */
1007 .register_write = rt2x00pci_register_write,
1008 .register_write_lock = rt2x00pci_register_write, /* same for PCI */
1009 .register_multiread = rt2x00pci_register_multiread,
1010 .register_multiwrite = rt2x00pci_register_multiwrite,
1011 .regbusy_read = rt2x00pci_regbusy_read,
1012 .drv_write_firmware = rt2800pci_write_firmware,
1013 .drv_init_registers = rt2800pci_init_registers,
1014};
1015
1049static const struct rt2x00lib_ops rt2800pci_rt2x00_ops = { 1016static const struct rt2x00lib_ops rt2800pci_rt2x00_ops = {
1050 .irq_handler = rt2800pci_interrupt, 1017 .irq_handler = rt2800pci_interrupt,
1018 .irq_handler_thread = rt2800pci_interrupt_thread,
1051 .probe_hw = rt2800pci_probe_hw, 1019 .probe_hw = rt2800pci_probe_hw,
1052 .get_firmware_name = rt2800pci_get_firmware_name, 1020 .get_firmware_name = rt2800pci_get_firmware_name,
1053 .check_firmware = rt2800pci_check_firmware, 1021 .check_firmware = rt2800_check_firmware,
1054 .load_firmware = rt2800pci_load_firmware, 1022 .load_firmware = rt2800_load_firmware,
1055 .initialize = rt2x00pci_initialize, 1023 .initialize = rt2x00pci_initialize,
1056 .uninitialize = rt2x00pci_uninitialize, 1024 .uninitialize = rt2x00pci_uninitialize,
1057 .get_entry_state = rt2800pci_get_entry_state, 1025 .get_entry_state = rt2800pci_get_entry_state,
@@ -1109,7 +1077,8 @@ static const struct rt2x00_ops rt2800pci_ops = {
1109 .tx = &rt2800pci_queue_tx, 1077 .tx = &rt2800pci_queue_tx,
1110 .bcn = &rt2800pci_queue_bcn, 1078 .bcn = &rt2800pci_queue_bcn,
1111 .lib = &rt2800pci_rt2x00_ops, 1079 .lib = &rt2800pci_rt2x00_ops,
1112 .hw = &rt2800_mac80211_ops, 1080 .drv = &rt2800pci_rt2800_ops,
1081 .hw = &rt2800pci_mac80211_ops,
1113#ifdef CONFIG_RT2X00_LIB_DEBUGFS 1082#ifdef CONFIG_RT2X00_LIB_DEBUGFS
1114 .debugfs = &rt2800_rt2x00debug, 1083 .debugfs = &rt2800_rt2x00debug,
1115#endif /* CONFIG_RT2X00_LIB_DEBUGFS */ 1084#endif /* CONFIG_RT2X00_LIB_DEBUGFS */
generated by cgit v1.2.2 (git 2.25.0) at 2025-02-03 11:07:17 -0500