1 /* atl2.h -- atl2 driver definitions 2 * 3 * Copyright(c) 2007 Atheros Corporation. All rights reserved. 4 * Copyright(c) 2006 xiong huang <xiong.huang@atheros.com> 5 * Copyright(c) 2007 Chris Snook <csnook@redhat.com> 6 * 7 * Derived from Intel e1000 driver 8 * Copyright(c) 1999 - 2005 Intel Corporation. All rights reserved. 9 * 10 * This program is free software; you can redistribute it and/or modify it 11 * under the terms of the GNU General Public License as published by the Free 12 * Software Foundation; either version 2 of the License, or (at your option) 13 * any later version. 14 * 15 * This program is distributed in the hope that it will be useful, but WITHOUT 16 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 17 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for 18 * more details. 19 * 20 * You should have received a copy of the GNU General Public License along with 21 * this program; if not, write to the Free Software Foundation, Inc., 59 22 * Temple Place - Suite 330, Boston, MA 02111-1307, USA. 23 */ 24 25 #ifndef _ATL2_H_ 26 #define _ATL2_H_ 27 28 #include <linux/atomic.h> 29 #include <linux/netdevice.h> 30 31 #ifndef _ATL2_HW_H_ 32 #define _ATL2_HW_H_ 33 34 #ifndef _ATL2_OSDEP_H_ 35 #define _ATL2_OSDEP_H_ 36 37 #include <linux/pci.h> 38 #include <linux/delay.h> 39 #include <linux/interrupt.h> 40 #include <linux/if_ether.h> 41 42 #include "atlx.h" 43 44 #ifdef ETHTOOL_OPS_COMPAT 45 extern int ethtool_ioctl(struct ifreq *ifr); 46 #endif 47 48 #define PCI_COMMAND_REGISTER PCI_COMMAND 49 #define CMD_MEM_WRT_INVALIDATE PCI_COMMAND_INVALIDATE 50 51 #define ATL2_WRITE_REG(a, reg, value) (iowrite32((value), \ 52 ((a)->hw_addr + (reg)))) 53 54 #define ATL2_WRITE_FLUSH(a) (ioread32((a)->hw_addr)) 55 56 #define ATL2_READ_REG(a, reg) (ioread32((a)->hw_addr + (reg))) 57 58 #define ATL2_WRITE_REGB(a, reg, value) (iowrite8((value), \ 59 ((a)->hw_addr + (reg)))) 60 61 #define ATL2_READ_REGB(a, reg) (ioread8((a)->hw_addr + (reg))) 62 63 #define ATL2_WRITE_REGW(a, reg, value) (iowrite16((value), \ 64 ((a)->hw_addr + (reg)))) 65 66 #define ATL2_READ_REGW(a, reg) (ioread16((a)->hw_addr + (reg))) 67 68 #define ATL2_WRITE_REG_ARRAY(a, reg, offset, value) \ 69 (iowrite32((value), (((a)->hw_addr + (reg)) + ((offset) << 2)))) 70 71 #define ATL2_READ_REG_ARRAY(a, reg, offset) \ 72 (ioread32(((a)->hw_addr + (reg)) + ((offset) << 2))) 73 74 #endif /* _ATL2_OSDEP_H_ */ 75 76 struct atl2_adapter; 77 struct atl2_hw; 78 79 /* function prototype */ 80 static s32 atl2_reset_hw(struct atl2_hw *hw); 81 static s32 atl2_read_mac_addr(struct atl2_hw *hw); 82 static s32 atl2_init_hw(struct atl2_hw *hw); 83 static s32 atl2_get_speed_and_duplex(struct atl2_hw *hw, u16 *speed, 84 u16 *duplex); 85 static u32 atl2_hash_mc_addr(struct atl2_hw *hw, u8 *mc_addr); 86 static void atl2_hash_set(struct atl2_hw *hw, u32 hash_value); 87 static s32 atl2_read_phy_reg(struct atl2_hw *hw, u16 reg_addr, u16 *phy_data); 88 static s32 atl2_write_phy_reg(struct atl2_hw *hw, u32 reg_addr, u16 phy_data); 89 static void atl2_read_pci_cfg(struct atl2_hw *hw, u32 reg, u16 *value); 90 static void atl2_write_pci_cfg(struct atl2_hw *hw, u32 reg, u16 *value); 91 static void atl2_set_mac_addr(struct atl2_hw *hw); 92 static bool atl2_read_eeprom(struct atl2_hw *hw, u32 Offset, u32 *pValue); 93 static bool atl2_write_eeprom(struct atl2_hw *hw, u32 offset, u32 value); 94 static s32 atl2_phy_init(struct atl2_hw *hw); 95 static int atl2_check_eeprom_exist(struct atl2_hw *hw); 96 static void atl2_force_ps(struct atl2_hw *hw); 97 98 /* register definition */ 99 100 /* Block IDLE Status Register */ 101 #define IDLE_STATUS_RXMAC 1 /* 1: RXMAC is non-IDLE */ 102 #define IDLE_STATUS_TXMAC 2 /* 1: TXMAC is non-IDLE */ 103 #define IDLE_STATUS_DMAR 8 /* 1: DMAR is non-IDLE */ 104 #define IDLE_STATUS_DMAW 4 /* 1: DMAW is non-IDLE */ 105 106 /* MDIO Control Register */ 107 #define MDIO_WAIT_TIMES 10 108 109 /* MAC Control Register */ 110 #define MAC_CTRL_DBG_TX_BKPRESURE 0x100000 /* 1: TX max backoff */ 111 #define MAC_CTRL_MACLP_CLK_PHY 0x8000000 /* 1: 25MHz from phy */ 112 #define MAC_CTRL_HALF_LEFT_BUF_SHIFT 28 113 #define MAC_CTRL_HALF_LEFT_BUF_MASK 0xF /* MAC retry buf x32B */ 114 115 /* Internal SRAM Partition Register */ 116 #define REG_SRAM_TXRAM_END 0x1500 /* Internal tail address of TXRAM 117 * default: 2byte*1024 */ 118 #define REG_SRAM_RXRAM_END 0x1502 /* Internal tail address of RXRAM 119 * default: 2byte*1024 */ 120 121 /* Descriptor Control register */ 122 #define REG_TXD_BASE_ADDR_LO 0x1544 /* The base address of the Transmit 123 * Data Mem low 32-bit(dword align) */ 124 #define REG_TXD_MEM_SIZE 0x1548 /* Transmit Data Memory size(by 125 * double word , max 256KB) */ 126 #define REG_TXS_BASE_ADDR_LO 0x154C /* The base address of the Transmit 127 * Status Memory low 32-bit(dword word 128 * align) */ 129 #define REG_TXS_MEM_SIZE 0x1550 /* double word unit, max 4*2047 130 * bytes. */ 131 #define REG_RXD_BASE_ADDR_LO 0x1554 /* The base address of the Transmit 132 * Status Memory low 32-bit(unit 8 133 * bytes) */ 134 #define REG_RXD_BUF_NUM 0x1558 /* Receive Data & Status Memory buffer 135 * number (unit 1536bytes, max 136 * 1536*2047) */ 137 138 /* DMAR Control Register */ 139 #define REG_DMAR 0x1580 140 #define DMAR_EN 0x1 /* 1: Enable DMAR */ 141 142 /* TX Cur-Through (early tx threshold) Control Register */ 143 #define REG_TX_CUT_THRESH 0x1590 /* TxMac begin transmit packet 144 * threshold(unit word) */ 145 146 /* DMAW Control Register */ 147 #define REG_DMAW 0x15A0 148 #define DMAW_EN 0x1 149 150 /* Flow control register */ 151 #define REG_PAUSE_ON_TH 0x15A8 /* RXD high watermark of overflow 152 * threshold configuration register */ 153 #define REG_PAUSE_OFF_TH 0x15AA /* RXD lower watermark of overflow 154 * threshold configuration register */ 155 156 /* Mailbox Register */ 157 #define REG_MB_TXD_WR_IDX 0x15f0 /* double word align */ 158 #define REG_MB_RXD_RD_IDX 0x15F4 /* RXD Read index (unit: 1536byets) */ 159 160 /* Interrupt Status Register */ 161 #define ISR_TIMER 1 /* Interrupt when Timer counts down to zero */ 162 #define ISR_MANUAL 2 /* Software manual interrupt, for debug. Set 163 * when SW_MAN_INT_EN is set in Table 51 164 * Selene Master Control Register 165 * (Offset 0x1400). */ 166 #define ISR_RXF_OV 4 /* RXF overflow interrupt */ 167 #define ISR_TXF_UR 8 /* TXF underrun interrupt */ 168 #define ISR_TXS_OV 0x10 /* Internal transmit status buffer full 169 * interrupt */ 170 #define ISR_RXS_OV 0x20 /* Internal receive status buffer full 171 * interrupt */ 172 #define ISR_LINK_CHG 0x40 /* Link Status Change Interrupt */ 173 #define ISR_HOST_TXD_UR 0x80 174 #define ISR_HOST_RXD_OV 0x100 /* Host rx data memory full , one pulse */ 175 #define ISR_DMAR_TO_RST 0x200 /* DMAR op timeout interrupt. SW should 176 * do Reset */ 177 #define ISR_DMAW_TO_RST 0x400 178 #define ISR_PHY 0x800 /* phy interrupt */ 179 #define ISR_TS_UPDATE 0x10000 /* interrupt after new tx pkt status written 180 * to host */ 181 #define ISR_RS_UPDATE 0x20000 /* interrupt ater new rx pkt status written 182 * to host. */ 183 #define ISR_TX_EARLY 0x40000 /* interrupt when txmac begin transmit one 184 * packet */ 185 186 #define ISR_TX_EVENT (ISR_TXF_UR | ISR_TXS_OV | ISR_HOST_TXD_UR |\ 187 ISR_TS_UPDATE | ISR_TX_EARLY) 188 #define ISR_RX_EVENT (ISR_RXF_OV | ISR_RXS_OV | ISR_HOST_RXD_OV |\ 189 ISR_RS_UPDATE) 190 191 #define IMR_NORMAL_MASK (\ 192 /*ISR_LINK_CHG |*/\ 193 ISR_MANUAL |\ 194 ISR_DMAR_TO_RST |\ 195 ISR_DMAW_TO_RST |\ 196 ISR_PHY |\ 197 ISR_PHY_LINKDOWN |\ 198 ISR_TS_UPDATE |\ 199 ISR_RS_UPDATE) 200 201 /* Receive MAC Statistics Registers */ 202 #define REG_STS_RX_PAUSE 0x1700 /* Num pause packets received */ 203 #define REG_STS_RXD_OV 0x1704 /* Num frames dropped due to RX 204 * FIFO overflow */ 205 #define REG_STS_RXS_OV 0x1708 /* Num frames dropped due to RX 206 * Status Buffer Overflow */ 207 #define REG_STS_RX_FILTER 0x170C /* Num packets dropped due to 208 * address filtering */ 209 210 /* MII definitions */ 211 212 /* PHY Common Register */ 213 #define MII_SMARTSPEED 0x14 214 #define MII_DBG_ADDR 0x1D 215 #define MII_DBG_DATA 0x1E 216 217 /* PCI Command Register Bit Definitions */ 218 #define PCI_REG_COMMAND 0x04 219 #define CMD_IO_SPACE 0x0001 220 #define CMD_MEMORY_SPACE 0x0002 221 #define CMD_BUS_MASTER 0x0004 222 223 #define MEDIA_TYPE_100M_FULL 1 224 #define MEDIA_TYPE_100M_HALF 2 225 #define MEDIA_TYPE_10M_FULL 3 226 #define MEDIA_TYPE_10M_HALF 4 227 228 #define AUTONEG_ADVERTISE_SPEED_DEFAULT 0x000F /* Everything */ 229 230 /* The size (in bytes) of a ethernet packet */ 231 #define ENET_HEADER_SIZE 14 232 #define MAXIMUM_ETHERNET_FRAME_SIZE 1518 /* with FCS */ 233 #define MINIMUM_ETHERNET_FRAME_SIZE 64 /* with FCS */ 234 #define ETHERNET_FCS_SIZE 4 235 #define MAX_JUMBO_FRAME_SIZE 0x2000 236 #define VLAN_SIZE 4 237 238 struct tx_pkt_header { 239 unsigned pkt_size:11; 240 unsigned:4; /* reserved */ 241 unsigned ins_vlan:1; /* txmac should insert vlan */ 242 unsigned short vlan; /* vlan tag */ 243 }; 244 /* FIXME: replace above bitfields with MASK/SHIFT defines below */ 245 #define TX_PKT_HEADER_SIZE_MASK 0x7FF 246 #define TX_PKT_HEADER_SIZE_SHIFT 0 247 #define TX_PKT_HEADER_INS_VLAN_MASK 0x1 248 #define TX_PKT_HEADER_INS_VLAN_SHIFT 15 249 #define TX_PKT_HEADER_VLAN_TAG_MASK 0xFFFF 250 #define TX_PKT_HEADER_VLAN_TAG_SHIFT 16 251 252 struct tx_pkt_status { 253 unsigned pkt_size:11; 254 unsigned:5; /* reserved */ 255 unsigned ok:1; /* current packet transmitted without error */ 256 unsigned bcast:1; /* broadcast packet */ 257 unsigned mcast:1; /* multicast packet */ 258 unsigned pause:1; /* transmiited a pause frame */ 259 unsigned ctrl:1; 260 unsigned defer:1; /* current packet is xmitted with defer */ 261 unsigned exc_defer:1; 262 unsigned single_col:1; 263 unsigned multi_col:1; 264 unsigned late_col:1; 265 unsigned abort_col:1; 266 unsigned underun:1; /* current packet is aborted 267 * due to txram underrun */ 268 unsigned:3; /* reserved */ 269 unsigned update:1; /* always 1'b1 in tx_status_buf */ 270 }; 271 /* FIXME: replace above bitfields with MASK/SHIFT defines below */ 272 #define TX_PKT_STATUS_SIZE_MASK 0x7FF 273 #define TX_PKT_STATUS_SIZE_SHIFT 0 274 #define TX_PKT_STATUS_OK_MASK 0x1 275 #define TX_PKT_STATUS_OK_SHIFT 16 276 #define TX_PKT_STATUS_BCAST_MASK 0x1 277 #define TX_PKT_STATUS_BCAST_SHIFT 17 278 #define TX_PKT_STATUS_MCAST_MASK 0x1 279 #define TX_PKT_STATUS_MCAST_SHIFT 18 280 #define TX_PKT_STATUS_PAUSE_MASK 0x1 281 #define TX_PKT_STATUS_PAUSE_SHIFT 19 282 #define TX_PKT_STATUS_CTRL_MASK 0x1 283 #define TX_PKT_STATUS_CTRL_SHIFT 20 284 #define TX_PKT_STATUS_DEFER_MASK 0x1 285 #define TX_PKT_STATUS_DEFER_SHIFT 21 286 #define TX_PKT_STATUS_EXC_DEFER_MASK 0x1 287 #define TX_PKT_STATUS_EXC_DEFER_SHIFT 22 288 #define TX_PKT_STATUS_SINGLE_COL_MASK 0x1 289 #define TX_PKT_STATUS_SINGLE_COL_SHIFT 23 290 #define TX_PKT_STATUS_MULTI_COL_MASK 0x1 291 #define TX_PKT_STATUS_MULTI_COL_SHIFT 24 292 #define TX_PKT_STATUS_LATE_COL_MASK 0x1 293 #define TX_PKT_STATUS_LATE_COL_SHIFT 25 294 #define TX_PKT_STATUS_ABORT_COL_MASK 0x1 295 #define TX_PKT_STATUS_ABORT_COL_SHIFT 26 296 #define TX_PKT_STATUS_UNDERRUN_MASK 0x1 297 #define TX_PKT_STATUS_UNDERRUN_SHIFT 27 298 #define TX_PKT_STATUS_UPDATE_MASK 0x1 299 #define TX_PKT_STATUS_UPDATE_SHIFT 31 300 301 struct rx_pkt_status { 302 unsigned pkt_size:11; /* packet size, max 2047 bytes */ 303 unsigned:5; /* reserved */ 304 unsigned ok:1; /* current packet received ok without error */ 305 unsigned bcast:1; /* current packet is broadcast */ 306 unsigned mcast:1; /* current packet is multicast */ 307 unsigned pause:1; 308 unsigned ctrl:1; 309 unsigned crc:1; /* received a packet with crc error */ 310 unsigned code:1; /* received a packet with code error */ 311 unsigned runt:1; /* received a packet less than 64 bytes 312 * with good crc */ 313 unsigned frag:1; /* received a packet less than 64 bytes 314 * with bad crc */ 315 unsigned trunc:1; /* current frame truncated due to rxram full */ 316 unsigned align:1; /* this packet is alignment error */ 317 unsigned vlan:1; /* this packet has vlan */ 318 unsigned:3; /* reserved */ 319 unsigned update:1; 320 unsigned short vtag; /* vlan tag */ 321 unsigned:16; 322 }; 323 /* FIXME: replace above bitfields with MASK/SHIFT defines below */ 324 #define RX_PKT_STATUS_SIZE_MASK 0x7FF 325 #define RX_PKT_STATUS_SIZE_SHIFT 0 326 #define RX_PKT_STATUS_OK_MASK 0x1 327 #define RX_PKT_STATUS_OK_SHIFT 16 328 #define RX_PKT_STATUS_BCAST_MASK 0x1 329 #define RX_PKT_STATUS_BCAST_SHIFT 17 330 #define RX_PKT_STATUS_MCAST_MASK 0x1 331 #define RX_PKT_STATUS_MCAST_SHIFT 18 332 #define RX_PKT_STATUS_PAUSE_MASK 0x1 333 #define RX_PKT_STATUS_PAUSE_SHIFT 19 334 #define RX_PKT_STATUS_CTRL_MASK 0x1 335 #define RX_PKT_STATUS_CTRL_SHIFT 20 336 #define RX_PKT_STATUS_CRC_MASK 0x1 337 #define RX_PKT_STATUS_CRC_SHIFT 21 338 #define RX_PKT_STATUS_CODE_MASK 0x1 339 #define RX_PKT_STATUS_CODE_SHIFT 22 340 #define RX_PKT_STATUS_RUNT_MASK 0x1 341 #define RX_PKT_STATUS_RUNT_SHIFT 23 342 #define RX_PKT_STATUS_FRAG_MASK 0x1 343 #define RX_PKT_STATUS_FRAG_SHIFT 24 344 #define RX_PKT_STATUS_TRUNK_MASK 0x1 345 #define RX_PKT_STATUS_TRUNK_SHIFT 25 346 #define RX_PKT_STATUS_ALIGN_MASK 0x1 347 #define RX_PKT_STATUS_ALIGN_SHIFT 26 348 #define RX_PKT_STATUS_VLAN_MASK 0x1 349 #define RX_PKT_STATUS_VLAN_SHIFT 27 350 #define RX_PKT_STATUS_UPDATE_MASK 0x1 351 #define RX_PKT_STATUS_UPDATE_SHIFT 31 352 #define RX_PKT_STATUS_VLAN_TAG_MASK 0xFFFF 353 #define RX_PKT_STATUS_VLAN_TAG_SHIFT 32 354 355 struct rx_desc { 356 struct rx_pkt_status status; 357 unsigned char packet[1536-sizeof(struct rx_pkt_status)]; 358 }; 359 360 enum atl2_speed_duplex { 361 atl2_10_half = 0, 362 atl2_10_full = 1, 363 atl2_100_half = 2, 364 atl2_100_full = 3 365 }; 366 367 struct atl2_spi_flash_dev { 368 const char *manu_name; /* manufacturer id */ 369 /* op-code */ 370 u8 cmdWRSR; 371 u8 cmdREAD; 372 u8 cmdPROGRAM; 373 u8 cmdWREN; 374 u8 cmdWRDI; 375 u8 cmdRDSR; 376 u8 cmdRDID; 377 u8 cmdSECTOR_ERASE; 378 u8 cmdCHIP_ERASE; 379 }; 380 381 /* Structure containing variables used by the shared code (atl2_hw.c) */ 382 struct atl2_hw { 383 u8 __iomem *hw_addr; 384 void *back; 385 386 u8 preamble_len; 387 u8 max_retry; /* Retransmission maximum, afterwards the 388 * packet will be discarded. */ 389 u8 jam_ipg; /* IPG to start JAM for collision based flow 390 * control in half-duplex mode. In unit of 391 * 8-bit time. */ 392 u8 ipgt; /* Desired back to back inter-packet gap. The 393 * default is 96-bit time. */ 394 u8 min_ifg; /* Minimum number of IFG to enforce in between 395 * RX frames. Frame gap below such IFP is 396 * dropped. */ 397 u8 ipgr1; /* 64bit Carrier-Sense window */ 398 u8 ipgr2; /* 96-bit IPG window */ 399 u8 retry_buf; /* When half-duplex mode, should hold some 400 * bytes for mac retry . (8*4bytes unit) */ 401 402 u16 fc_rxd_hi; 403 u16 fc_rxd_lo; 404 u16 lcol; /* Collision Window */ 405 u16 max_frame_size; 406 407 u16 MediaType; 408 u16 autoneg_advertised; 409 u16 pci_cmd_word; 410 411 u16 mii_autoneg_adv_reg; 412 413 u32 mem_rang; 414 u32 txcw; 415 u32 mc_filter_type; 416 u32 num_mc_addrs; 417 u32 collision_delta; 418 u32 tx_packet_delta; 419 u16 phy_spd_default; 420 421 u16 device_id; 422 u16 vendor_id; 423 u16 subsystem_id; 424 u16 subsystem_vendor_id; 425 u8 revision_id; 426 427 /* spi flash */ 428 u8 flash_vendor; 429 430 u8 dma_fairness; 431 u8 mac_addr[ETH_ALEN]; 432 u8 perm_mac_addr[ETH_ALEN]; 433 434 /* FIXME */ 435 /* bool phy_preamble_sup; */ 436 bool phy_configured; 437 }; 438 439 #endif /* _ATL2_HW_H_ */ 440 441 struct atl2_ring_header { 442 /* pointer to the descriptor ring memory */ 443 void *desc; 444 /* physical address of the descriptor ring */ 445 dma_addr_t dma; 446 /* length of descriptor ring in bytes */ 447 unsigned int size; 448 }; 449 450 /* board specific private data structure */ 451 struct atl2_adapter { 452 /* OS defined structs */ 453 struct net_device *netdev; 454 struct pci_dev *pdev; 455 u32 wol; 456 u16 link_speed; 457 u16 link_duplex; 458 459 spinlock_t stats_lock; 460 461 struct work_struct reset_task; 462 struct work_struct link_chg_task; 463 struct timer_list watchdog_timer; 464 struct timer_list phy_config_timer; 465 466 unsigned long cfg_phy; 467 bool mac_disabled; 468 469 /* All Descriptor memory */ 470 dma_addr_t ring_dma; 471 void *ring_vir_addr; 472 int ring_size; 473 474 struct tx_pkt_header *txd_ring; 475 dma_addr_t txd_dma; 476 477 struct tx_pkt_status *txs_ring; 478 dma_addr_t txs_dma; 479 480 struct rx_desc *rxd_ring; 481 dma_addr_t rxd_dma; 482 483 u32 txd_ring_size; /* bytes per unit */ 484 u32 txs_ring_size; /* dwords per unit */ 485 u32 rxd_ring_size; /* 1536 bytes per unit */ 486 487 /* read /write ptr: */ 488 /* host */ 489 u32 txd_write_ptr; 490 u32 txs_next_clear; 491 u32 rxd_read_ptr; 492 493 /* nic */ 494 atomic_t txd_read_ptr; 495 atomic_t txs_write_ptr; 496 u32 rxd_write_ptr; 497 498 /* Interrupt Moderator timer ( 2us resolution) */ 499 u16 imt; 500 /* Interrupt Clear timer (2us resolution) */ 501 u16 ict; 502 503 unsigned long flags; 504 /* structs defined in atl2_hw.h */ 505 u32 bd_number; /* board number */ 506 bool pci_using_64; 507 bool have_msi; 508 struct atl2_hw hw; 509 510 u32 usr_cmd; 511 /* FIXME */ 512 /* u32 regs_buff[ATL2_REGS_LEN]; */ 513 u32 pci_state[16]; 514 515 u32 *config_space; 516 }; 517 518 enum atl2_state_t { 519 __ATL2_TESTING, 520 __ATL2_RESETTING, 521 __ATL2_DOWN 522 }; 523 524 #endif /* _ATL2_H_ */ 525