]>
Commit | Line | Data |
---|---|---|
ae06c70b | 1 | // SPDX-License-Identifier: GPL-2.0 |
51dce24b | 2 | /* Copyright(c) 1999 - 2018 Intel Corporation. */ |
9a799d71 AK |
3 | |
4 | #include <linux/pci.h> | |
5 | #include <linux/delay.h> | |
6 | #include <linux/sched.h> | |
ccffad25 | 7 | #include <linux/netdevice.h> |
9a799d71 | 8 | |
11afc1b1 | 9 | #include "ixgbe.h" |
9a799d71 AK |
10 | #include "ixgbe_common.h" |
11 | #include "ixgbe_phy.h" | |
12 | ||
c44ade9e | 13 | static s32 ixgbe_acquire_eeprom(struct ixgbe_hw *hw); |
9a799d71 AK |
14 | static s32 ixgbe_get_eeprom_semaphore(struct ixgbe_hw *hw); |
15 | static void ixgbe_release_eeprom_semaphore(struct ixgbe_hw *hw); | |
c44ade9e JB |
16 | static s32 ixgbe_ready_eeprom(struct ixgbe_hw *hw); |
17 | static void ixgbe_standby_eeprom(struct ixgbe_hw *hw); | |
18 | static void ixgbe_shift_out_eeprom_bits(struct ixgbe_hw *hw, u16 data, | |
e7cf745b | 19 | u16 count); |
c44ade9e JB |
20 | static u16 ixgbe_shift_in_eeprom_bits(struct ixgbe_hw *hw, u16 count); |
21 | static void ixgbe_raise_eeprom_clk(struct ixgbe_hw *hw, u32 *eec); | |
22 | static void ixgbe_lower_eeprom_clk(struct ixgbe_hw *hw, u32 *eec); | |
23 | static void ixgbe_release_eeprom(struct ixgbe_hw *hw); | |
9a799d71 | 24 | |
9a799d71 | 25 | static s32 ixgbe_mta_vector(struct ixgbe_hw *hw, u8 *mc_addr); |
eb9c3e3e | 26 | static s32 ixgbe_poll_eerd_eewr_done(struct ixgbe_hw *hw, u32 ee_reg); |
68c7005d ET |
27 | static s32 ixgbe_read_eeprom_buffer_bit_bang(struct ixgbe_hw *hw, u16 offset, |
28 | u16 words, u16 *data); | |
29 | static s32 ixgbe_write_eeprom_buffer_bit_bang(struct ixgbe_hw *hw, u16 offset, | |
30 | u16 words, u16 *data); | |
31 | static s32 ixgbe_detect_eeprom_page_size_generic(struct ixgbe_hw *hw, | |
32 | u16 offset); | |
ff9d1a5a | 33 | static s32 ixgbe_disable_pcie_master(struct ixgbe_hw *hw); |
9a799d71 | 34 | |
9a900eca DS |
35 | /* Base table for registers values that change by MAC */ |
36 | const u32 ixgbe_mvals_8259X[IXGBE_MVALS_IDX_LIMIT] = { | |
37 | IXGBE_MVALS_INIT(8259X) | |
38 | }; | |
39 | ||
67a79df2 AD |
40 | /** |
41 | * ixgbe_device_supports_autoneg_fc - Check if phy supports autoneg flow | |
42 | * control | |
43 | * @hw: pointer to hardware structure | |
44 | * | |
45 | * There are several phys that do not support autoneg flow control. This | |
46 | * function check the device id to see if the associated phy supports | |
47 | * autoneg flow control. | |
48 | **/ | |
73d80953 | 49 | bool ixgbe_device_supports_autoneg_fc(struct ixgbe_hw *hw) |
67a79df2 | 50 | { |
73d80953 DS |
51 | bool supported = false; |
52 | ixgbe_link_speed speed; | |
53 | bool link_up; | |
67a79df2 | 54 | |
73d80953 DS |
55 | switch (hw->phy.media_type) { |
56 | case ixgbe_media_type_fiber: | |
ae84dbf7 TN |
57 | /* flow control autoneg black list */ |
58 | switch (hw->device_id) { | |
59 | case IXGBE_DEV_ID_X550EM_A_SFP: | |
60 | case IXGBE_DEV_ID_X550EM_A_SFP_N: | |
61 | supported = false; | |
62 | break; | |
63 | default: | |
64 | hw->mac.ops.check_link(hw, &speed, &link_up, false); | |
65 | /* if link is down, assume supported */ | |
66 | if (link_up) | |
85c41c5b | 67 | supported = speed == IXGBE_LINK_SPEED_1GB_FULL; |
ae84dbf7 TN |
68 | else |
69 | supported = true; | |
70 | } | |
71 | ||
73d80953 DS |
72 | break; |
73 | case ixgbe_media_type_backplane: | |
7adbccbb TN |
74 | if (hw->device_id == IXGBE_DEV_ID_X550EM_X_XFI) |
75 | supported = false; | |
76 | else | |
77 | supported = true; | |
73d80953 DS |
78 | break; |
79 | case ixgbe_media_type_copper: | |
80 | /* only some copper devices support flow control autoneg */ | |
81 | switch (hw->device_id) { | |
82 | case IXGBE_DEV_ID_82599_T3_LOM: | |
83 | case IXGBE_DEV_ID_X540T: | |
84 | case IXGBE_DEV_ID_X540T1: | |
df8c26fd | 85 | case IXGBE_DEV_ID_X550T: |
a711ad89 | 86 | case IXGBE_DEV_ID_X550T1: |
df8c26fd | 87 | case IXGBE_DEV_ID_X550EM_X_10G_T: |
92ed8430 | 88 | case IXGBE_DEV_ID_X550EM_A_10G_T: |
b3eb4e18 MR |
89 | case IXGBE_DEV_ID_X550EM_A_1G_T: |
90 | case IXGBE_DEV_ID_X550EM_A_1G_T_L: | |
73d80953 DS |
91 | supported = true; |
92 | break; | |
93 | default: | |
94 | break; | |
95 | } | |
67a79df2 | 96 | default: |
73d80953 | 97 | break; |
67a79df2 | 98 | } |
73d80953 | 99 | |
ae84dbf7 TN |
100 | if (!supported) |
101 | hw_dbg(hw, "Device %x does not support flow control autoneg\n", | |
102 | hw->device_id); | |
103 | ||
73d80953 | 104 | return supported; |
67a79df2 AD |
105 | } |
106 | ||
107 | /** | |
afdc71e4 | 108 | * ixgbe_setup_fc_generic - Set up flow control |
67a79df2 AD |
109 | * @hw: pointer to hardware structure |
110 | * | |
111 | * Called at init time to set up flow control. | |
112 | **/ | |
afdc71e4 | 113 | s32 ixgbe_setup_fc_generic(struct ixgbe_hw *hw) |
67a79df2 AD |
114 | { |
115 | s32 ret_val = 0; | |
116 | u32 reg = 0, reg_bp = 0; | |
117 | u16 reg_cu = 0; | |
429d6a3b | 118 | bool locked = false; |
67a79df2 | 119 | |
67a79df2 AD |
120 | /* |
121 | * Validate the requested mode. Strict IEEE mode does not allow | |
122 | * ixgbe_fc_rx_pause because it will cause us to fail at UNH. | |
123 | */ | |
124 | if (hw->fc.strict_ieee && hw->fc.requested_mode == ixgbe_fc_rx_pause) { | |
125 | hw_dbg(hw, "ixgbe_fc_rx_pause not valid in strict IEEE mode\n"); | |
e90dd264 | 126 | return IXGBE_ERR_INVALID_LINK_SETTINGS; |
67a79df2 AD |
127 | } |
128 | ||
129 | /* | |
130 | * 10gig parts do not have a word in the EEPROM to determine the | |
131 | * default flow control setting, so we explicitly set it to full. | |
132 | */ | |
133 | if (hw->fc.requested_mode == ixgbe_fc_default) | |
134 | hw->fc.requested_mode = ixgbe_fc_full; | |
135 | ||
136 | /* | |
137 | * Set up the 1G and 10G flow control advertisement registers so the | |
138 | * HW will be able to do fc autoneg once the cable is plugged in. If | |
139 | * we link at 10G, the 1G advertisement is harmless and vice versa. | |
140 | */ | |
67a79df2 | 141 | switch (hw->phy.media_type) { |
429d6a3b DS |
142 | case ixgbe_media_type_backplane: |
143 | /* some MAC's need RMW protection on AUTOC */ | |
144 | ret_val = hw->mac.ops.prot_autoc_read(hw, &locked, ®_bp); | |
f8cf7a00 | 145 | if (ret_val) |
e90dd264 | 146 | return ret_val; |
429d6a3b | 147 | |
5463fce6 | 148 | fallthrough; /* only backplane uses autoc */ |
67a79df2 | 149 | case ixgbe_media_type_fiber: |
67a79df2 | 150 | reg = IXGBE_READ_REG(hw, IXGBE_PCS1GANA); |
429d6a3b | 151 | |
67a79df2 | 152 | break; |
67a79df2 AD |
153 | case ixgbe_media_type_copper: |
154 | hw->phy.ops.read_reg(hw, MDIO_AN_ADVERTISE, | |
155 | MDIO_MMD_AN, ®_cu); | |
156 | break; | |
67a79df2 | 157 | default: |
041441d0 | 158 | break; |
67a79df2 AD |
159 | } |
160 | ||
161 | /* | |
162 | * The possible values of fc.requested_mode are: | |
163 | * 0: Flow control is completely disabled | |
164 | * 1: Rx flow control is enabled (we can receive pause frames, | |
165 | * but not send pause frames). | |
166 | * 2: Tx flow control is enabled (we can send pause frames but | |
167 | * we do not support receiving pause frames). | |
168 | * 3: Both Rx and Tx flow control (symmetric) are enabled. | |
67a79df2 AD |
169 | * other: Invalid. |
170 | */ | |
171 | switch (hw->fc.requested_mode) { | |
172 | case ixgbe_fc_none: | |
173 | /* Flow control completely disabled by software override. */ | |
174 | reg &= ~(IXGBE_PCS1GANA_SYM_PAUSE | IXGBE_PCS1GANA_ASM_PAUSE); | |
175 | if (hw->phy.media_type == ixgbe_media_type_backplane) | |
176 | reg_bp &= ~(IXGBE_AUTOC_SYM_PAUSE | | |
177 | IXGBE_AUTOC_ASM_PAUSE); | |
178 | else if (hw->phy.media_type == ixgbe_media_type_copper) | |
179 | reg_cu &= ~(IXGBE_TAF_SYM_PAUSE | IXGBE_TAF_ASM_PAUSE); | |
180 | break; | |
67a79df2 AD |
181 | case ixgbe_fc_tx_pause: |
182 | /* | |
183 | * Tx Flow control is enabled, and Rx Flow control is | |
184 | * disabled by software override. | |
185 | */ | |
041441d0 AD |
186 | reg |= IXGBE_PCS1GANA_ASM_PAUSE; |
187 | reg &= ~IXGBE_PCS1GANA_SYM_PAUSE; | |
67a79df2 | 188 | if (hw->phy.media_type == ixgbe_media_type_backplane) { |
041441d0 AD |
189 | reg_bp |= IXGBE_AUTOC_ASM_PAUSE; |
190 | reg_bp &= ~IXGBE_AUTOC_SYM_PAUSE; | |
67a79df2 | 191 | } else if (hw->phy.media_type == ixgbe_media_type_copper) { |
041441d0 AD |
192 | reg_cu |= IXGBE_TAF_ASM_PAUSE; |
193 | reg_cu &= ~IXGBE_TAF_SYM_PAUSE; | |
67a79df2 AD |
194 | } |
195 | break; | |
041441d0 AD |
196 | case ixgbe_fc_rx_pause: |
197 | /* | |
198 | * Rx Flow control is enabled and Tx Flow control is | |
199 | * disabled by software override. Since there really | |
200 | * isn't a way to advertise that we are capable of RX | |
201 | * Pause ONLY, we will advertise that we support both | |
202 | * symmetric and asymmetric Rx PAUSE, as such we fall | |
203 | * through to the fc_full statement. Later, we will | |
204 | * disable the adapter's ability to send PAUSE frames. | |
205 | */ | |
67a79df2 AD |
206 | case ixgbe_fc_full: |
207 | /* Flow control (both Rx and Tx) is enabled by SW override. */ | |
041441d0 | 208 | reg |= IXGBE_PCS1GANA_SYM_PAUSE | IXGBE_PCS1GANA_ASM_PAUSE; |
67a79df2 | 209 | if (hw->phy.media_type == ixgbe_media_type_backplane) |
041441d0 AD |
210 | reg_bp |= IXGBE_AUTOC_SYM_PAUSE | |
211 | IXGBE_AUTOC_ASM_PAUSE; | |
67a79df2 | 212 | else if (hw->phy.media_type == ixgbe_media_type_copper) |
041441d0 | 213 | reg_cu |= IXGBE_TAF_SYM_PAUSE | IXGBE_TAF_ASM_PAUSE; |
67a79df2 | 214 | break; |
67a79df2 AD |
215 | default: |
216 | hw_dbg(hw, "Flow control param set incorrectly\n"); | |
e90dd264 | 217 | return IXGBE_ERR_CONFIG; |
67a79df2 AD |
218 | } |
219 | ||
220 | if (hw->mac.type != ixgbe_mac_X540) { | |
221 | /* | |
222 | * Enable auto-negotiation between the MAC & PHY; | |
223 | * the MAC will advertise clause 37 flow control. | |
224 | */ | |
225 | IXGBE_WRITE_REG(hw, IXGBE_PCS1GANA, reg); | |
226 | reg = IXGBE_READ_REG(hw, IXGBE_PCS1GLCTL); | |
227 | ||
228 | /* Disable AN timeout */ | |
229 | if (hw->fc.strict_ieee) | |
230 | reg &= ~IXGBE_PCS1GLCTL_AN_1G_TIMEOUT_EN; | |
231 | ||
232 | IXGBE_WRITE_REG(hw, IXGBE_PCS1GLCTL, reg); | |
233 | hw_dbg(hw, "Set up FC; PCS1GLCTL = 0x%08X\n", reg); | |
234 | } | |
235 | ||
236 | /* | |
237 | * AUTOC restart handles negotiation of 1G and 10G on backplane | |
238 | * and copper. There is no need to set the PCS1GCTL register. | |
239 | * | |
240 | */ | |
241 | if (hw->phy.media_type == ixgbe_media_type_backplane) { | |
d7bbcd32 DS |
242 | /* Need the SW/FW semaphore around AUTOC writes if 82599 and |
243 | * LESM is on, likewise reset_pipeline requries the lock as | |
244 | * it also writes AUTOC. | |
245 | */ | |
429d6a3b DS |
246 | ret_val = hw->mac.ops.prot_autoc_write(hw, reg_bp, locked); |
247 | if (ret_val) | |
e90dd264 | 248 | return ret_val; |
d7bbcd32 | 249 | |
67a79df2 | 250 | } else if ((hw->phy.media_type == ixgbe_media_type_copper) && |
429d6a3b | 251 | ixgbe_device_supports_autoneg_fc(hw)) { |
67a79df2 AD |
252 | hw->phy.ops.write_reg(hw, MDIO_AN_ADVERTISE, |
253 | MDIO_MMD_AN, reg_cu); | |
254 | } | |
255 | ||
256 | hw_dbg(hw, "Set up FC; IXGBE_AUTOC = 0x%08X\n", reg); | |
67a79df2 AD |
257 | return ret_val; |
258 | } | |
259 | ||
9a799d71 | 260 | /** |
c44ade9e | 261 | * ixgbe_start_hw_generic - Prepare hardware for Tx/Rx |
9a799d71 AK |
262 | * @hw: pointer to hardware structure |
263 | * | |
264 | * Starts the hardware by filling the bus info structure and media type, clears | |
265 | * all on chip counters, initializes receive address registers, multicast | |
266 | * table, VLAN filter table, calls routine to set up link and flow control | |
267 | * settings, and leaves transmit and receive units disabled and uninitialized | |
268 | **/ | |
c44ade9e | 269 | s32 ixgbe_start_hw_generic(struct ixgbe_hw *hw) |
9a799d71 | 270 | { |
e5776620 | 271 | s32 ret_val; |
9a799d71 | 272 | u32 ctrl_ext; |
aac9e053 | 273 | u16 device_caps; |
9a799d71 AK |
274 | |
275 | /* Set the media type */ | |
276 | hw->phy.media_type = hw->mac.ops.get_media_type(hw); | |
277 | ||
278 | /* Identify the PHY */ | |
c44ade9e | 279 | hw->phy.ops.identify(hw); |
9a799d71 | 280 | |
9a799d71 | 281 | /* Clear the VLAN filter table */ |
c44ade9e | 282 | hw->mac.ops.clear_vfta(hw); |
9a799d71 | 283 | |
9a799d71 | 284 | /* Clear statistics registers */ |
c44ade9e | 285 | hw->mac.ops.clear_hw_cntrs(hw); |
9a799d71 AK |
286 | |
287 | /* Set No Snoop Disable */ | |
288 | ctrl_ext = IXGBE_READ_REG(hw, IXGBE_CTRL_EXT); | |
289 | ctrl_ext |= IXGBE_CTRL_EXT_NS_DIS; | |
290 | IXGBE_WRITE_REG(hw, IXGBE_CTRL_EXT, ctrl_ext); | |
3957d63d | 291 | IXGBE_WRITE_FLUSH(hw); |
9a799d71 | 292 | |
2916500d DS |
293 | /* Setup flow control if method for doing so */ |
294 | if (hw->mac.ops.setup_fc) { | |
295 | ret_val = hw->mac.ops.setup_fc(hw); | |
296 | if (ret_val) | |
297 | return ret_val; | |
298 | } | |
620fa036 | 299 | |
aac9e053 DS |
300 | /* Cashe bit indicating need for crosstalk fix */ |
301 | switch (hw->mac.type) { | |
302 | case ixgbe_mac_82599EB: | |
303 | case ixgbe_mac_X550EM_x: | |
304 | case ixgbe_mac_x550em_a: | |
305 | hw->mac.ops.get_device_caps(hw, &device_caps); | |
306 | if (device_caps & IXGBE_DEVICE_CAPS_NO_CROSSTALK_WR) | |
307 | hw->need_crosstalk_fix = false; | |
308 | else | |
309 | hw->need_crosstalk_fix = true; | |
310 | break; | |
311 | default: | |
312 | hw->need_crosstalk_fix = false; | |
313 | break; | |
314 | } | |
315 | ||
9a799d71 AK |
316 | /* Clear adapter stopped flag */ |
317 | hw->adapter_stopped = false; | |
318 | ||
3507a9b8 | 319 | return 0; |
9a799d71 AK |
320 | } |
321 | ||
7184b7cf ET |
322 | /** |
323 | * ixgbe_start_hw_gen2 - Init sequence for common device family | |
324 | * @hw: pointer to hw structure | |
325 | * | |
326 | * Performs the init sequence common to the second generation | |
327 | * of 10 GbE devices. | |
328 | * Devices in the second generation: | |
329 | * 82599 | |
330 | * X540 | |
331 | **/ | |
332 | s32 ixgbe_start_hw_gen2(struct ixgbe_hw *hw) | |
333 | { | |
334 | u32 i; | |
335 | ||
336 | /* Clear the rate limiters */ | |
337 | for (i = 0; i < hw->mac.max_tx_queues; i++) { | |
338 | IXGBE_WRITE_REG(hw, IXGBE_RTTDQSEL, i); | |
339 | IXGBE_WRITE_REG(hw, IXGBE_RTTBCNRC, 0); | |
340 | } | |
341 | IXGBE_WRITE_FLUSH(hw); | |
342 | ||
343 | return 0; | |
344 | } | |
345 | ||
9a799d71 | 346 | /** |
c44ade9e | 347 | * ixgbe_init_hw_generic - Generic hardware initialization |
9a799d71 AK |
348 | * @hw: pointer to hardware structure |
349 | * | |
c44ade9e | 350 | * Initialize the hardware by resetting the hardware, filling the bus info |
9a799d71 AK |
351 | * structure and media type, clears all on chip counters, initializes receive |
352 | * address registers, multicast table, VLAN filter table, calls routine to set | |
353 | * up link and flow control settings, and leaves transmit and receive units | |
354 | * disabled and uninitialized | |
355 | **/ | |
c44ade9e | 356 | s32 ixgbe_init_hw_generic(struct ixgbe_hw *hw) |
9a799d71 | 357 | { |
794caeb2 PWJ |
358 | s32 status; |
359 | ||
9a799d71 | 360 | /* Reset the hardware */ |
794caeb2 | 361 | status = hw->mac.ops.reset_hw(hw); |
9a799d71 | 362 | |
794caeb2 PWJ |
363 | if (status == 0) { |
364 | /* Start the HW */ | |
365 | status = hw->mac.ops.start_hw(hw); | |
366 | } | |
9a799d71 | 367 | |
805cedd6 | 368 | /* Initialize the LED link active for LED blink support */ |
5e999fb4 PG |
369 | if (hw->mac.ops.init_led_link_act) |
370 | hw->mac.ops.init_led_link_act(hw); | |
805cedd6 | 371 | |
794caeb2 | 372 | return status; |
9a799d71 AK |
373 | } |
374 | ||
375 | /** | |
c44ade9e | 376 | * ixgbe_clear_hw_cntrs_generic - Generic clear hardware counters |
9a799d71 AK |
377 | * @hw: pointer to hardware structure |
378 | * | |
379 | * Clears all hardware statistics counters by reading them from the hardware | |
380 | * Statistics counters are clear on read. | |
381 | **/ | |
c44ade9e | 382 | s32 ixgbe_clear_hw_cntrs_generic(struct ixgbe_hw *hw) |
9a799d71 AK |
383 | { |
384 | u16 i = 0; | |
385 | ||
386 | IXGBE_READ_REG(hw, IXGBE_CRCERRS); | |
387 | IXGBE_READ_REG(hw, IXGBE_ILLERRC); | |
388 | IXGBE_READ_REG(hw, IXGBE_ERRBC); | |
389 | IXGBE_READ_REG(hw, IXGBE_MSPDC); | |
390 | for (i = 0; i < 8; i++) | |
391 | IXGBE_READ_REG(hw, IXGBE_MPC(i)); | |
392 | ||
393 | IXGBE_READ_REG(hw, IXGBE_MLFC); | |
394 | IXGBE_READ_REG(hw, IXGBE_MRFC); | |
395 | IXGBE_READ_REG(hw, IXGBE_RLEC); | |
396 | IXGBE_READ_REG(hw, IXGBE_LXONTXC); | |
9a799d71 | 397 | IXGBE_READ_REG(hw, IXGBE_LXOFFTXC); |
667c7565 ET |
398 | if (hw->mac.type >= ixgbe_mac_82599EB) { |
399 | IXGBE_READ_REG(hw, IXGBE_LXONRXCNT); | |
400 | IXGBE_READ_REG(hw, IXGBE_LXOFFRXCNT); | |
401 | } else { | |
402 | IXGBE_READ_REG(hw, IXGBE_LXONRXC); | |
403 | IXGBE_READ_REG(hw, IXGBE_LXOFFRXC); | |
404 | } | |
9a799d71 AK |
405 | |
406 | for (i = 0; i < 8; i++) { | |
407 | IXGBE_READ_REG(hw, IXGBE_PXONTXC(i)); | |
9a799d71 | 408 | IXGBE_READ_REG(hw, IXGBE_PXOFFTXC(i)); |
667c7565 ET |
409 | if (hw->mac.type >= ixgbe_mac_82599EB) { |
410 | IXGBE_READ_REG(hw, IXGBE_PXONRXCNT(i)); | |
411 | IXGBE_READ_REG(hw, IXGBE_PXOFFRXCNT(i)); | |
412 | } else { | |
413 | IXGBE_READ_REG(hw, IXGBE_PXONRXC(i)); | |
414 | IXGBE_READ_REG(hw, IXGBE_PXOFFRXC(i)); | |
415 | } | |
9a799d71 | 416 | } |
667c7565 ET |
417 | if (hw->mac.type >= ixgbe_mac_82599EB) |
418 | for (i = 0; i < 8; i++) | |
419 | IXGBE_READ_REG(hw, IXGBE_PXON2OFFCNT(i)); | |
9a799d71 AK |
420 | IXGBE_READ_REG(hw, IXGBE_PRC64); |
421 | IXGBE_READ_REG(hw, IXGBE_PRC127); | |
422 | IXGBE_READ_REG(hw, IXGBE_PRC255); | |
423 | IXGBE_READ_REG(hw, IXGBE_PRC511); | |
424 | IXGBE_READ_REG(hw, IXGBE_PRC1023); | |
425 | IXGBE_READ_REG(hw, IXGBE_PRC1522); | |
426 | IXGBE_READ_REG(hw, IXGBE_GPRC); | |
427 | IXGBE_READ_REG(hw, IXGBE_BPRC); | |
428 | IXGBE_READ_REG(hw, IXGBE_MPRC); | |
429 | IXGBE_READ_REG(hw, IXGBE_GPTC); | |
430 | IXGBE_READ_REG(hw, IXGBE_GORCL); | |
431 | IXGBE_READ_REG(hw, IXGBE_GORCH); | |
432 | IXGBE_READ_REG(hw, IXGBE_GOTCL); | |
433 | IXGBE_READ_REG(hw, IXGBE_GOTCH); | |
f3116f62 ET |
434 | if (hw->mac.type == ixgbe_mac_82598EB) |
435 | for (i = 0; i < 8; i++) | |
436 | IXGBE_READ_REG(hw, IXGBE_RNBC(i)); | |
9a799d71 AK |
437 | IXGBE_READ_REG(hw, IXGBE_RUC); |
438 | IXGBE_READ_REG(hw, IXGBE_RFC); | |
439 | IXGBE_READ_REG(hw, IXGBE_ROC); | |
440 | IXGBE_READ_REG(hw, IXGBE_RJC); | |
441 | IXGBE_READ_REG(hw, IXGBE_MNGPRC); | |
442 | IXGBE_READ_REG(hw, IXGBE_MNGPDC); | |
443 | IXGBE_READ_REG(hw, IXGBE_MNGPTC); | |
444 | IXGBE_READ_REG(hw, IXGBE_TORL); | |
445 | IXGBE_READ_REG(hw, IXGBE_TORH); | |
446 | IXGBE_READ_REG(hw, IXGBE_TPR); | |
447 | IXGBE_READ_REG(hw, IXGBE_TPT); | |
448 | IXGBE_READ_REG(hw, IXGBE_PTC64); | |
449 | IXGBE_READ_REG(hw, IXGBE_PTC127); | |
450 | IXGBE_READ_REG(hw, IXGBE_PTC255); | |
451 | IXGBE_READ_REG(hw, IXGBE_PTC511); | |
452 | IXGBE_READ_REG(hw, IXGBE_PTC1023); | |
453 | IXGBE_READ_REG(hw, IXGBE_PTC1522); | |
454 | IXGBE_READ_REG(hw, IXGBE_MPTC); | |
455 | IXGBE_READ_REG(hw, IXGBE_BPTC); | |
456 | for (i = 0; i < 16; i++) { | |
457 | IXGBE_READ_REG(hw, IXGBE_QPRC(i)); | |
9a799d71 | 458 | IXGBE_READ_REG(hw, IXGBE_QPTC(i)); |
667c7565 ET |
459 | if (hw->mac.type >= ixgbe_mac_82599EB) { |
460 | IXGBE_READ_REG(hw, IXGBE_QBRC_L(i)); | |
461 | IXGBE_READ_REG(hw, IXGBE_QBRC_H(i)); | |
462 | IXGBE_READ_REG(hw, IXGBE_QBTC_L(i)); | |
463 | IXGBE_READ_REG(hw, IXGBE_QBTC_H(i)); | |
464 | IXGBE_READ_REG(hw, IXGBE_QPRDC(i)); | |
465 | } else { | |
466 | IXGBE_READ_REG(hw, IXGBE_QBRC(i)); | |
467 | IXGBE_READ_REG(hw, IXGBE_QBTC(i)); | |
468 | } | |
9a799d71 AK |
469 | } |
470 | ||
e87ce1cd | 471 | if (hw->mac.type == ixgbe_mac_X550 || hw->mac.type == ixgbe_mac_X540) { |
a3aeea0e ET |
472 | if (hw->phy.id == 0) |
473 | hw->phy.ops.identify(hw); | |
c1085b10 ET |
474 | hw->phy.ops.read_reg(hw, IXGBE_PCRC8ECL, MDIO_MMD_PCS, &i); |
475 | hw->phy.ops.read_reg(hw, IXGBE_PCRC8ECH, MDIO_MMD_PCS, &i); | |
476 | hw->phy.ops.read_reg(hw, IXGBE_LDPCECL, MDIO_MMD_PCS, &i); | |
477 | hw->phy.ops.read_reg(hw, IXGBE_LDPCECH, MDIO_MMD_PCS, &i); | |
a3aeea0e ET |
478 | } |
479 | ||
9a799d71 AK |
480 | return 0; |
481 | } | |
482 | ||
483 | /** | |
289700db | 484 | * ixgbe_read_pba_string_generic - Reads part number string from EEPROM |
c44ade9e | 485 | * @hw: pointer to hardware structure |
289700db DS |
486 | * @pba_num: stores the part number string from the EEPROM |
487 | * @pba_num_size: part number string buffer length | |
c44ade9e | 488 | * |
289700db | 489 | * Reads the part number string from the EEPROM. |
c44ade9e | 490 | **/ |
289700db | 491 | s32 ixgbe_read_pba_string_generic(struct ixgbe_hw *hw, u8 *pba_num, |
e7cf745b | 492 | u32 pba_num_size) |
c44ade9e JB |
493 | { |
494 | s32 ret_val; | |
495 | u16 data; | |
289700db DS |
496 | u16 pba_ptr; |
497 | u16 offset; | |
498 | u16 length; | |
499 | ||
500 | if (pba_num == NULL) { | |
501 | hw_dbg(hw, "PBA string buffer was null\n"); | |
502 | return IXGBE_ERR_INVALID_ARGUMENT; | |
503 | } | |
c44ade9e JB |
504 | |
505 | ret_val = hw->eeprom.ops.read(hw, IXGBE_PBANUM0_PTR, &data); | |
506 | if (ret_val) { | |
507 | hw_dbg(hw, "NVM Read Error\n"); | |
508 | return ret_val; | |
509 | } | |
c44ade9e | 510 | |
289700db | 511 | ret_val = hw->eeprom.ops.read(hw, IXGBE_PBANUM1_PTR, &pba_ptr); |
c44ade9e JB |
512 | if (ret_val) { |
513 | hw_dbg(hw, "NVM Read Error\n"); | |
514 | return ret_val; | |
515 | } | |
289700db DS |
516 | |
517 | /* | |
518 | * if data is not ptr guard the PBA must be in legacy format which | |
519 | * means pba_ptr is actually our second data word for the PBA number | |
520 | * and we can decode it into an ascii string | |
521 | */ | |
522 | if (data != IXGBE_PBANUM_PTR_GUARD) { | |
523 | hw_dbg(hw, "NVM PBA number is not stored as string\n"); | |
524 | ||
525 | /* we will need 11 characters to store the PBA */ | |
526 | if (pba_num_size < 11) { | |
527 | hw_dbg(hw, "PBA string buffer too small\n"); | |
528 | return IXGBE_ERR_NO_SPACE; | |
529 | } | |
530 | ||
531 | /* extract hex string from data and pba_ptr */ | |
532 | pba_num[0] = (data >> 12) & 0xF; | |
533 | pba_num[1] = (data >> 8) & 0xF; | |
534 | pba_num[2] = (data >> 4) & 0xF; | |
535 | pba_num[3] = data & 0xF; | |
536 | pba_num[4] = (pba_ptr >> 12) & 0xF; | |
537 | pba_num[5] = (pba_ptr >> 8) & 0xF; | |
538 | pba_num[6] = '-'; | |
539 | pba_num[7] = 0; | |
540 | pba_num[8] = (pba_ptr >> 4) & 0xF; | |
541 | pba_num[9] = pba_ptr & 0xF; | |
542 | ||
543 | /* put a null character on the end of our string */ | |
544 | pba_num[10] = '\0'; | |
545 | ||
546 | /* switch all the data but the '-' to hex char */ | |
547 | for (offset = 0; offset < 10; offset++) { | |
548 | if (pba_num[offset] < 0xA) | |
549 | pba_num[offset] += '0'; | |
550 | else if (pba_num[offset] < 0x10) | |
551 | pba_num[offset] += 'A' - 0xA; | |
552 | } | |
553 | ||
554 | return 0; | |
555 | } | |
556 | ||
557 | ret_val = hw->eeprom.ops.read(hw, pba_ptr, &length); | |
558 | if (ret_val) { | |
559 | hw_dbg(hw, "NVM Read Error\n"); | |
560 | return ret_val; | |
561 | } | |
562 | ||
563 | if (length == 0xFFFF || length == 0) { | |
564 | hw_dbg(hw, "NVM PBA number section invalid length\n"); | |
565 | return IXGBE_ERR_PBA_SECTION; | |
566 | } | |
567 | ||
568 | /* check if pba_num buffer is big enough */ | |
569 | if (pba_num_size < (((u32)length * 2) - 1)) { | |
570 | hw_dbg(hw, "PBA string buffer too small\n"); | |
571 | return IXGBE_ERR_NO_SPACE; | |
572 | } | |
573 | ||
574 | /* trim pba length from start of string */ | |
575 | pba_ptr++; | |
576 | length--; | |
577 | ||
578 | for (offset = 0; offset < length; offset++) { | |
579 | ret_val = hw->eeprom.ops.read(hw, pba_ptr + offset, &data); | |
580 | if (ret_val) { | |
581 | hw_dbg(hw, "NVM Read Error\n"); | |
582 | return ret_val; | |
583 | } | |
584 | pba_num[offset * 2] = (u8)(data >> 8); | |
585 | pba_num[(offset * 2) + 1] = (u8)(data & 0xFF); | |
586 | } | |
587 | pba_num[offset * 2] = '\0'; | |
c44ade9e JB |
588 | |
589 | return 0; | |
590 | } | |
591 | ||
592 | /** | |
593 | * ixgbe_get_mac_addr_generic - Generic get MAC address | |
9a799d71 AK |
594 | * @hw: pointer to hardware structure |
595 | * @mac_addr: Adapter MAC address | |
596 | * | |
597 | * Reads the adapter's MAC address from first Receive Address Register (RAR0) | |
598 | * A reset of the adapter must be performed prior to calling this function | |
599 | * in order for the MAC address to have been loaded from the EEPROM into RAR0 | |
600 | **/ | |
c44ade9e | 601 | s32 ixgbe_get_mac_addr_generic(struct ixgbe_hw *hw, u8 *mac_addr) |
9a799d71 AK |
602 | { |
603 | u32 rar_high; | |
604 | u32 rar_low; | |
605 | u16 i; | |
606 | ||
607 | rar_high = IXGBE_READ_REG(hw, IXGBE_RAH(0)); | |
608 | rar_low = IXGBE_READ_REG(hw, IXGBE_RAL(0)); | |
609 | ||
610 | for (i = 0; i < 4; i++) | |
611 | mac_addr[i] = (u8)(rar_low >> (i*8)); | |
612 | ||
613 | for (i = 0; i < 2; i++) | |
614 | mac_addr[i+4] = (u8)(rar_high >> (i*8)); | |
615 | ||
616 | return 0; | |
617 | } | |
618 | ||
ef1889d5 JK |
619 | enum ixgbe_bus_width ixgbe_convert_bus_width(u16 link_status) |
620 | { | |
621 | switch (link_status & IXGBE_PCI_LINK_WIDTH) { | |
622 | case IXGBE_PCI_LINK_WIDTH_1: | |
623 | return ixgbe_bus_width_pcie_x1; | |
624 | case IXGBE_PCI_LINK_WIDTH_2: | |
625 | return ixgbe_bus_width_pcie_x2; | |
626 | case IXGBE_PCI_LINK_WIDTH_4: | |
627 | return ixgbe_bus_width_pcie_x4; | |
628 | case IXGBE_PCI_LINK_WIDTH_8: | |
629 | return ixgbe_bus_width_pcie_x8; | |
630 | default: | |
631 | return ixgbe_bus_width_unknown; | |
632 | } | |
633 | } | |
634 | ||
635 | enum ixgbe_bus_speed ixgbe_convert_bus_speed(u16 link_status) | |
636 | { | |
637 | switch (link_status & IXGBE_PCI_LINK_SPEED) { | |
638 | case IXGBE_PCI_LINK_SPEED_2500: | |
639 | return ixgbe_bus_speed_2500; | |
640 | case IXGBE_PCI_LINK_SPEED_5000: | |
641 | return ixgbe_bus_speed_5000; | |
642 | case IXGBE_PCI_LINK_SPEED_8000: | |
643 | return ixgbe_bus_speed_8000; | |
644 | default: | |
645 | return ixgbe_bus_speed_unknown; | |
646 | } | |
647 | } | |
648 | ||
11afc1b1 PW |
649 | /** |
650 | * ixgbe_get_bus_info_generic - Generic set PCI bus info | |
651 | * @hw: pointer to hardware structure | |
652 | * | |
653 | * Sets the PCI bus info (speed, width, type) within the ixgbe_hw structure | |
654 | **/ | |
655 | s32 ixgbe_get_bus_info_generic(struct ixgbe_hw *hw) | |
656 | { | |
11afc1b1 PW |
657 | u16 link_status; |
658 | ||
659 | hw->bus.type = ixgbe_bus_type_pci_express; | |
660 | ||
661 | /* Get the negotiated link width and speed from PCI config space */ | |
0d7c6e00 | 662 | link_status = ixgbe_read_pci_cfg_word(hw, IXGBE_PCI_LINK_STATUS); |
11afc1b1 | 663 | |
ef1889d5 JK |
664 | hw->bus.width = ixgbe_convert_bus_width(link_status); |
665 | hw->bus.speed = ixgbe_convert_bus_speed(link_status); | |
11afc1b1 | 666 | |
0d7c6e00 | 667 | hw->mac.ops.set_lan_id(hw); |
11afc1b1 PW |
668 | |
669 | return 0; | |
670 | } | |
671 | ||
672 | /** | |
673 | * ixgbe_set_lan_id_multi_port_pcie - Set LAN id for PCIe multiple port devices | |
674 | * @hw: pointer to the HW structure | |
675 | * | |
676 | * Determines the LAN function id by reading memory-mapped registers | |
677 | * and swaps the port value if requested. | |
678 | **/ | |
679 | void ixgbe_set_lan_id_multi_port_pcie(struct ixgbe_hw *hw) | |
680 | { | |
681 | struct ixgbe_bus_info *bus = &hw->bus; | |
c898fe28 | 682 | u16 ee_ctrl_4; |
11afc1b1 PW |
683 | u32 reg; |
684 | ||
685 | reg = IXGBE_READ_REG(hw, IXGBE_STATUS); | |
686 | bus->func = (reg & IXGBE_STATUS_LAN_ID) >> IXGBE_STATUS_LAN_ID_SHIFT; | |
687 | bus->lan_id = bus->func; | |
688 | ||
689 | /* check for a port swap */ | |
9a900eca | 690 | reg = IXGBE_READ_REG(hw, IXGBE_FACTPS(hw)); |
11afc1b1 PW |
691 | if (reg & IXGBE_FACTPS_LFS) |
692 | bus->func ^= 0x1; | |
c898fe28 MR |
693 | |
694 | /* Get MAC instance from EEPROM for configuring CS4227 */ | |
695 | if (hw->device_id == IXGBE_DEV_ID_X550EM_A_SFP) { | |
696 | hw->eeprom.ops.read(hw, IXGBE_EEPROM_CTRL_4, &ee_ctrl_4); | |
697 | bus->instance_id = (ee_ctrl_4 & IXGBE_EE_CTRL_4_INST_ID) >> | |
698 | IXGBE_EE_CTRL_4_INST_ID_SHIFT; | |
699 | } | |
11afc1b1 PW |
700 | } |
701 | ||
9a799d71 | 702 | /** |
c44ade9e | 703 | * ixgbe_stop_adapter_generic - Generic stop Tx/Rx units |
9a799d71 AK |
704 | * @hw: pointer to hardware structure |
705 | * | |
706 | * Sets the adapter_stopped flag within ixgbe_hw struct. Clears interrupts, | |
707 | * disables transmit and receive units. The adapter_stopped flag is used by | |
708 | * the shared code and drivers to determine if the adapter is in a stopped | |
709 | * state and should not touch the hardware. | |
710 | **/ | |
c44ade9e | 711 | s32 ixgbe_stop_adapter_generic(struct ixgbe_hw *hw) |
9a799d71 | 712 | { |
9a799d71 AK |
713 | u32 reg_val; |
714 | u16 i; | |
715 | ||
716 | /* | |
717 | * Set the adapter_stopped flag so other driver functions stop touching | |
718 | * the hardware | |
719 | */ | |
720 | hw->adapter_stopped = true; | |
721 | ||
722 | /* Disable the receive unit */ | |
1f9ac57c | 723 | hw->mac.ops.disable_rx(hw); |
9a799d71 | 724 | |
ff9d1a5a | 725 | /* Clear interrupt mask to stop interrupts from being generated */ |
9a799d71 AK |
726 | IXGBE_WRITE_REG(hw, IXGBE_EIMC, IXGBE_IRQ_CLEAR_MASK); |
727 | ||
ff9d1a5a | 728 | /* Clear any pending interrupts, flush previous writes */ |
9a799d71 AK |
729 | IXGBE_READ_REG(hw, IXGBE_EICR); |
730 | ||
731 | /* Disable the transmit unit. Each queue must be disabled. */ | |
ff9d1a5a ET |
732 | for (i = 0; i < hw->mac.max_tx_queues; i++) |
733 | IXGBE_WRITE_REG(hw, IXGBE_TXDCTL(i), IXGBE_TXDCTL_SWFLSH); | |
734 | ||
735 | /* Disable the receive unit by stopping each queue */ | |
736 | for (i = 0; i < hw->mac.max_rx_queues; i++) { | |
737 | reg_val = IXGBE_READ_REG(hw, IXGBE_RXDCTL(i)); | |
738 | reg_val &= ~IXGBE_RXDCTL_ENABLE; | |
739 | reg_val |= IXGBE_RXDCTL_SWFLSH; | |
740 | IXGBE_WRITE_REG(hw, IXGBE_RXDCTL(i), reg_val); | |
9a799d71 AK |
741 | } |
742 | ||
ff9d1a5a ET |
743 | /* flush all queues disables */ |
744 | IXGBE_WRITE_FLUSH(hw); | |
745 | usleep_range(1000, 2000); | |
746 | ||
c44ade9e JB |
747 | /* |
748 | * Prevent the PCI-E bus from from hanging by disabling PCI-E master | |
749 | * access and verify no pending requests | |
750 | */ | |
ff9d1a5a | 751 | return ixgbe_disable_pcie_master(hw); |
9a799d71 AK |
752 | } |
753 | ||
805cedd6 DS |
754 | /** |
755 | * ixgbe_init_led_link_act_generic - Store the LED index link/activity. | |
756 | * @hw: pointer to hardware structure | |
757 | * | |
758 | * Store the index for the link active LED. This will be used to support | |
759 | * blinking the LED. | |
760 | **/ | |
761 | s32 ixgbe_init_led_link_act_generic(struct ixgbe_hw *hw) | |
762 | { | |
763 | struct ixgbe_mac_info *mac = &hw->mac; | |
764 | u32 led_reg, led_mode; | |
765 | u16 i; | |
766 | ||
767 | led_reg = IXGBE_READ_REG(hw, IXGBE_LEDCTL); | |
768 | ||
769 | /* Get LED link active from the LEDCTL register */ | |
770 | for (i = 0; i < 4; i++) { | |
771 | led_mode = led_reg >> IXGBE_LED_MODE_SHIFT(i); | |
772 | ||
773 | if ((led_mode & IXGBE_LED_MODE_MASK_BASE) == | |
774 | IXGBE_LED_LINK_ACTIVE) { | |
775 | mac->led_link_act = i; | |
776 | return 0; | |
777 | } | |
778 | } | |
779 | ||
780 | /* If LEDCTL register does not have the LED link active set, then use | |
781 | * known MAC defaults. | |
782 | */ | |
783 | switch (hw->mac.type) { | |
784 | case ixgbe_mac_x550em_a: | |
785 | mac->led_link_act = 0; | |
786 | break; | |
787 | case ixgbe_mac_X550EM_x: | |
788 | mac->led_link_act = 1; | |
789 | break; | |
790 | default: | |
791 | mac->led_link_act = 2; | |
792 | } | |
793 | ||
794 | return 0; | |
795 | } | |
796 | ||
9a799d71 | 797 | /** |
c44ade9e | 798 | * ixgbe_led_on_generic - Turns on the software controllable LEDs. |
9a799d71 AK |
799 | * @hw: pointer to hardware structure |
800 | * @index: led number to turn on | |
801 | **/ | |
c44ade9e | 802 | s32 ixgbe_led_on_generic(struct ixgbe_hw *hw, u32 index) |
9a799d71 AK |
803 | { |
804 | u32 led_reg = IXGBE_READ_REG(hw, IXGBE_LEDCTL); | |
805 | ||
003287e0 DS |
806 | if (index > 3) |
807 | return IXGBE_ERR_PARAM; | |
808 | ||
9a799d71 AK |
809 | /* To turn on the LED, set mode to ON. */ |
810 | led_reg &= ~IXGBE_LED_MODE_MASK(index); | |
811 | led_reg |= IXGBE_LED_ON << IXGBE_LED_MODE_SHIFT(index); | |
812 | IXGBE_WRITE_REG(hw, IXGBE_LEDCTL, led_reg); | |
3957d63d | 813 | IXGBE_WRITE_FLUSH(hw); |
9a799d71 AK |
814 | |
815 | return 0; | |
816 | } | |
817 | ||
818 | /** | |
c44ade9e | 819 | * ixgbe_led_off_generic - Turns off the software controllable LEDs. |
9a799d71 AK |
820 | * @hw: pointer to hardware structure |
821 | * @index: led number to turn off | |
822 | **/ | |
c44ade9e | 823 | s32 ixgbe_led_off_generic(struct ixgbe_hw *hw, u32 index) |
9a799d71 AK |
824 | { |
825 | u32 led_reg = IXGBE_READ_REG(hw, IXGBE_LEDCTL); | |
826 | ||
003287e0 DS |
827 | if (index > 3) |
828 | return IXGBE_ERR_PARAM; | |
829 | ||
9a799d71 AK |
830 | /* To turn off the LED, set mode to OFF. */ |
831 | led_reg &= ~IXGBE_LED_MODE_MASK(index); | |
832 | led_reg |= IXGBE_LED_OFF << IXGBE_LED_MODE_SHIFT(index); | |
833 | IXGBE_WRITE_REG(hw, IXGBE_LEDCTL, led_reg); | |
3957d63d | 834 | IXGBE_WRITE_FLUSH(hw); |
9a799d71 AK |
835 | |
836 | return 0; | |
837 | } | |
838 | ||
9a799d71 | 839 | /** |
c44ade9e | 840 | * ixgbe_init_eeprom_params_generic - Initialize EEPROM params |
9a799d71 AK |
841 | * @hw: pointer to hardware structure |
842 | * | |
843 | * Initializes the EEPROM parameters ixgbe_eeprom_info within the | |
844 | * ixgbe_hw struct in order to set up EEPROM access. | |
845 | **/ | |
c44ade9e | 846 | s32 ixgbe_init_eeprom_params_generic(struct ixgbe_hw *hw) |
9a799d71 AK |
847 | { |
848 | struct ixgbe_eeprom_info *eeprom = &hw->eeprom; | |
849 | u32 eec; | |
850 | u16 eeprom_size; | |
851 | ||
852 | if (eeprom->type == ixgbe_eeprom_uninitialized) { | |
853 | eeprom->type = ixgbe_eeprom_none; | |
c44ade9e JB |
854 | /* Set default semaphore delay to 10ms which is a well |
855 | * tested value */ | |
856 | eeprom->semaphore_delay = 10; | |
68c7005d ET |
857 | /* Clear EEPROM page size, it will be initialized as needed */ |
858 | eeprom->word_page_size = 0; | |
9a799d71 AK |
859 | |
860 | /* | |
861 | * Check for EEPROM present first. | |
862 | * If not present leave as none | |
863 | */ | |
9a900eca | 864 | eec = IXGBE_READ_REG(hw, IXGBE_EEC(hw)); |
9a799d71 AK |
865 | if (eec & IXGBE_EEC_PRES) { |
866 | eeprom->type = ixgbe_eeprom_spi; | |
867 | ||
868 | /* | |
869 | * SPI EEPROM is assumed here. This code would need to | |
870 | * change if a future EEPROM is not SPI. | |
871 | */ | |
872 | eeprom_size = (u16)((eec & IXGBE_EEC_SIZE) >> | |
873 | IXGBE_EEC_SIZE_SHIFT); | |
b4f47a48 JK |
874 | eeprom->word_size = BIT(eeprom_size + |
875 | IXGBE_EEPROM_WORD_SIZE_SHIFT); | |
9a799d71 AK |
876 | } |
877 | ||
878 | if (eec & IXGBE_EEC_ADDR_SIZE) | |
879 | eeprom->address_bits = 16; | |
880 | else | |
881 | eeprom->address_bits = 8; | |
6ec1b71f JK |
882 | hw_dbg(hw, "Eeprom params: type = %d, size = %d, address bits: %d\n", |
883 | eeprom->type, eeprom->word_size, eeprom->address_bits); | |
9a799d71 AK |
884 | } |
885 | ||
886 | return 0; | |
887 | } | |
888 | ||
11afc1b1 | 889 | /** |
68c7005d | 890 | * ixgbe_write_eeprom_buffer_bit_bang_generic - Write EEPROM using bit-bang |
11afc1b1 | 891 | * @hw: pointer to hardware structure |
68c7005d ET |
892 | * @offset: offset within the EEPROM to write |
893 | * @words: number of words | |
894 | * @data: 16 bit word(s) to write to EEPROM | |
11afc1b1 | 895 | * |
68c7005d | 896 | * Reads 16 bit word(s) from EEPROM through bit-bang method |
11afc1b1 | 897 | **/ |
68c7005d ET |
898 | s32 ixgbe_write_eeprom_buffer_bit_bang_generic(struct ixgbe_hw *hw, u16 offset, |
899 | u16 words, u16 *data) | |
11afc1b1 | 900 | { |
e90dd264 | 901 | s32 status; |
68c7005d | 902 | u16 i, count; |
11afc1b1 PW |
903 | |
904 | hw->eeprom.ops.init_params(hw); | |
905 | ||
e90dd264 MR |
906 | if (words == 0) |
907 | return IXGBE_ERR_INVALID_ARGUMENT; | |
68c7005d | 908 | |
e90dd264 MR |
909 | if (offset + words > hw->eeprom.word_size) |
910 | return IXGBE_ERR_EEPROM; | |
11afc1b1 | 911 | |
68c7005d ET |
912 | /* |
913 | * The EEPROM page size cannot be queried from the chip. We do lazy | |
914 | * initialization. It is worth to do that when we write large buffer. | |
915 | */ | |
916 | if ((hw->eeprom.word_page_size == 0) && | |
917 | (words > IXGBE_EEPROM_PAGE_SIZE_MAX)) | |
918 | ixgbe_detect_eeprom_page_size_generic(hw, offset); | |
919 | ||
920 | /* | |
921 | * We cannot hold synchronization semaphores for too long | |
922 | * to avoid other entity starvation. However it is more efficient | |
923 | * to read in bursts than synchronizing access for each word. | |
924 | */ | |
925 | for (i = 0; i < words; i += IXGBE_EEPROM_RD_BUFFER_MAX_COUNT) { | |
926 | count = (words - i) / IXGBE_EEPROM_RD_BUFFER_MAX_COUNT > 0 ? | |
927 | IXGBE_EEPROM_RD_BUFFER_MAX_COUNT : (words - i); | |
928 | status = ixgbe_write_eeprom_buffer_bit_bang(hw, offset + i, | |
929 | count, &data[i]); | |
930 | ||
931 | if (status != 0) | |
932 | break; | |
933 | } | |
934 | ||
68c7005d ET |
935 | return status; |
936 | } | |
937 | ||
938 | /** | |
939 | * ixgbe_write_eeprom_buffer_bit_bang - Writes 16 bit word(s) to EEPROM | |
940 | * @hw: pointer to hardware structure | |
941 | * @offset: offset within the EEPROM to be written to | |
942 | * @words: number of word(s) | |
943 | * @data: 16 bit word(s) to be written to the EEPROM | |
944 | * | |
945 | * If ixgbe_eeprom_update_checksum is not called after this function, the | |
946 | * EEPROM will most likely contain an invalid checksum. | |
947 | **/ | |
948 | static s32 ixgbe_write_eeprom_buffer_bit_bang(struct ixgbe_hw *hw, u16 offset, | |
949 | u16 words, u16 *data) | |
950 | { | |
951 | s32 status; | |
952 | u16 word; | |
953 | u16 page_size; | |
954 | u16 i; | |
955 | u8 write_opcode = IXGBE_EEPROM_WRITE_OPCODE_SPI; | |
956 | ||
11afc1b1 PW |
957 | /* Prepare the EEPROM for writing */ |
958 | status = ixgbe_acquire_eeprom(hw); | |
e90dd264 MR |
959 | if (status) |
960 | return status; | |
11afc1b1 | 961 | |
e90dd264 MR |
962 | if (ixgbe_ready_eeprom(hw) != 0) { |
963 | ixgbe_release_eeprom(hw); | |
964 | return IXGBE_ERR_EEPROM; | |
11afc1b1 PW |
965 | } |
966 | ||
e90dd264 MR |
967 | for (i = 0; i < words; i++) { |
968 | ixgbe_standby_eeprom(hw); | |
969 | ||
970 | /* Send the WRITE ENABLE command (8 bit opcode) */ | |
971 | ixgbe_shift_out_eeprom_bits(hw, | |
972 | IXGBE_EEPROM_WREN_OPCODE_SPI, | |
973 | IXGBE_EEPROM_OPCODE_BITS); | |
11afc1b1 | 974 | |
e90dd264 | 975 | ixgbe_standby_eeprom(hw); |
11afc1b1 | 976 | |
e90dd264 MR |
977 | /* Some SPI eeproms use the 8th address bit embedded |
978 | * in the opcode | |
979 | */ | |
980 | if ((hw->eeprom.address_bits == 8) && | |
981 | ((offset + i) >= 128)) | |
982 | write_opcode |= IXGBE_EEPROM_A8_OPCODE_SPI; | |
11afc1b1 | 983 | |
e90dd264 MR |
984 | /* Send the Write command (8-bit opcode + addr) */ |
985 | ixgbe_shift_out_eeprom_bits(hw, write_opcode, | |
986 | IXGBE_EEPROM_OPCODE_BITS); | |
987 | ixgbe_shift_out_eeprom_bits(hw, (u16)((offset + i) * 2), | |
988 | hw->eeprom.address_bits); | |
989 | ||
990 | page_size = hw->eeprom.word_page_size; | |
991 | ||
992 | /* Send the data in burst via SPI */ | |
993 | do { | |
994 | word = data[i]; | |
995 | word = (word >> 8) | (word << 8); | |
996 | ixgbe_shift_out_eeprom_bits(hw, word, 16); | |
997 | ||
998 | if (page_size == 0) | |
999 | break; | |
1000 | ||
1001 | /* do not wrap around page */ | |
1002 | if (((offset + i) & (page_size - 1)) == | |
1003 | (page_size - 1)) | |
1004 | break; | |
1005 | } while (++i < words); | |
1006 | ||
1007 | ixgbe_standby_eeprom(hw); | |
1008 | usleep_range(10000, 20000); | |
68c7005d | 1009 | } |
e90dd264 MR |
1010 | /* Done with writing - release the EEPROM */ |
1011 | ixgbe_release_eeprom(hw); | |
11afc1b1 | 1012 | |
e90dd264 | 1013 | return 0; |
68c7005d ET |
1014 | } |
1015 | ||
1016 | /** | |
1017 | * ixgbe_write_eeprom_generic - Writes 16 bit value to EEPROM | |
1018 | * @hw: pointer to hardware structure | |
1019 | * @offset: offset within the EEPROM to be written to | |
1020 | * @data: 16 bit word to be written to the EEPROM | |
1021 | * | |
1022 | * If ixgbe_eeprom_update_checksum is not called after this function, the | |
1023 | * EEPROM will most likely contain an invalid checksum. | |
1024 | **/ | |
1025 | s32 ixgbe_write_eeprom_generic(struct ixgbe_hw *hw, u16 offset, u16 data) | |
1026 | { | |
68c7005d | 1027 | hw->eeprom.ops.init_params(hw); |
11afc1b1 | 1028 | |
e90dd264 MR |
1029 | if (offset >= hw->eeprom.word_size) |
1030 | return IXGBE_ERR_EEPROM; | |
11afc1b1 | 1031 | |
e90dd264 | 1032 | return ixgbe_write_eeprom_buffer_bit_bang(hw, offset, 1, &data); |
11afc1b1 PW |
1033 | } |
1034 | ||
9a799d71 | 1035 | /** |
68c7005d | 1036 | * ixgbe_read_eeprom_buffer_bit_bang_generic - Read EEPROM using bit-bang |
c44ade9e JB |
1037 | * @hw: pointer to hardware structure |
1038 | * @offset: offset within the EEPROM to be read | |
68c7005d ET |
1039 | * @words: number of word(s) |
1040 | * @data: read 16 bit words(s) from EEPROM | |
c44ade9e | 1041 | * |
68c7005d | 1042 | * Reads 16 bit word(s) from EEPROM through bit-bang method |
c44ade9e | 1043 | **/ |
68c7005d ET |
1044 | s32 ixgbe_read_eeprom_buffer_bit_bang_generic(struct ixgbe_hw *hw, u16 offset, |
1045 | u16 words, u16 *data) | |
c44ade9e | 1046 | { |
e90dd264 | 1047 | s32 status; |
68c7005d | 1048 | u16 i, count; |
c44ade9e JB |
1049 | |
1050 | hw->eeprom.ops.init_params(hw); | |
1051 | ||
e90dd264 MR |
1052 | if (words == 0) |
1053 | return IXGBE_ERR_INVALID_ARGUMENT; | |
68c7005d | 1054 | |
e90dd264 MR |
1055 | if (offset + words > hw->eeprom.word_size) |
1056 | return IXGBE_ERR_EEPROM; | |
c44ade9e | 1057 | |
68c7005d ET |
1058 | /* |
1059 | * We cannot hold synchronization semaphores for too long | |
1060 | * to avoid other entity starvation. However it is more efficient | |
1061 | * to read in bursts than synchronizing access for each word. | |
1062 | */ | |
1063 | for (i = 0; i < words; i += IXGBE_EEPROM_RD_BUFFER_MAX_COUNT) { | |
1064 | count = (words - i) / IXGBE_EEPROM_RD_BUFFER_MAX_COUNT > 0 ? | |
1065 | IXGBE_EEPROM_RD_BUFFER_MAX_COUNT : (words - i); | |
1066 | ||
1067 | status = ixgbe_read_eeprom_buffer_bit_bang(hw, offset + i, | |
1068 | count, &data[i]); | |
1069 | ||
e90dd264 MR |
1070 | if (status) |
1071 | return status; | |
68c7005d ET |
1072 | } |
1073 | ||
e90dd264 | 1074 | return 0; |
68c7005d ET |
1075 | } |
1076 | ||
1077 | /** | |
1078 | * ixgbe_read_eeprom_buffer_bit_bang - Read EEPROM using bit-bang | |
1079 | * @hw: pointer to hardware structure | |
1080 | * @offset: offset within the EEPROM to be read | |
1081 | * @words: number of word(s) | |
1082 | * @data: read 16 bit word(s) from EEPROM | |
1083 | * | |
1084 | * Reads 16 bit word(s) from EEPROM through bit-bang method | |
1085 | **/ | |
1086 | static s32 ixgbe_read_eeprom_buffer_bit_bang(struct ixgbe_hw *hw, u16 offset, | |
1087 | u16 words, u16 *data) | |
1088 | { | |
1089 | s32 status; | |
1090 | u16 word_in; | |
1091 | u8 read_opcode = IXGBE_EEPROM_READ_OPCODE_SPI; | |
1092 | u16 i; | |
1093 | ||
c44ade9e JB |
1094 | /* Prepare the EEPROM for reading */ |
1095 | status = ixgbe_acquire_eeprom(hw); | |
e90dd264 MR |
1096 | if (status) |
1097 | return status; | |
c44ade9e | 1098 | |
e90dd264 MR |
1099 | if (ixgbe_ready_eeprom(hw) != 0) { |
1100 | ixgbe_release_eeprom(hw); | |
1101 | return IXGBE_ERR_EEPROM; | |
c44ade9e JB |
1102 | } |
1103 | ||
e90dd264 MR |
1104 | for (i = 0; i < words; i++) { |
1105 | ixgbe_standby_eeprom(hw); | |
1106 | /* Some SPI eeproms use the 8th address bit embedded | |
1107 | * in the opcode | |
1108 | */ | |
1109 | if ((hw->eeprom.address_bits == 8) && | |
1110 | ((offset + i) >= 128)) | |
1111 | read_opcode |= IXGBE_EEPROM_A8_OPCODE_SPI; | |
c44ade9e | 1112 | |
e90dd264 MR |
1113 | /* Send the READ command (opcode + addr) */ |
1114 | ixgbe_shift_out_eeprom_bits(hw, read_opcode, | |
1115 | IXGBE_EEPROM_OPCODE_BITS); | |
1116 | ixgbe_shift_out_eeprom_bits(hw, (u16)((offset + i) * 2), | |
1117 | hw->eeprom.address_bits); | |
1118 | ||
1119 | /* Read the data. */ | |
1120 | word_in = ixgbe_shift_in_eeprom_bits(hw, 16); | |
1121 | data[i] = (word_in >> 8) | (word_in << 8); | |
68c7005d | 1122 | } |
c44ade9e | 1123 | |
e90dd264 MR |
1124 | /* End this read operation */ |
1125 | ixgbe_release_eeprom(hw); | |
1126 | ||
1127 | return 0; | |
68c7005d | 1128 | } |
c44ade9e | 1129 | |
68c7005d ET |
1130 | /** |
1131 | * ixgbe_read_eeprom_bit_bang_generic - Read EEPROM word using bit-bang | |
1132 | * @hw: pointer to hardware structure | |
1133 | * @offset: offset within the EEPROM to be read | |
1134 | * @data: read 16 bit value from EEPROM | |
1135 | * | |
1136 | * Reads 16 bit value from EEPROM through bit-bang method | |
1137 | **/ | |
1138 | s32 ixgbe_read_eeprom_bit_bang_generic(struct ixgbe_hw *hw, u16 offset, | |
1139 | u16 *data) | |
1140 | { | |
68c7005d ET |
1141 | hw->eeprom.ops.init_params(hw); |
1142 | ||
e90dd264 MR |
1143 | if (offset >= hw->eeprom.word_size) |
1144 | return IXGBE_ERR_EEPROM; | |
68c7005d | 1145 | |
e90dd264 | 1146 | return ixgbe_read_eeprom_buffer_bit_bang(hw, offset, 1, data); |
c44ade9e JB |
1147 | } |
1148 | ||
1149 | /** | |
68c7005d | 1150 | * ixgbe_read_eerd_buffer_generic - Read EEPROM word(s) using EERD |
9a799d71 | 1151 | * @hw: pointer to hardware structure |
68c7005d ET |
1152 | * @offset: offset of word in the EEPROM to read |
1153 | * @words: number of word(s) | |
1154 | * @data: 16 bit word(s) from the EEPROM | |
9a799d71 | 1155 | * |
68c7005d | 1156 | * Reads a 16 bit word(s) from the EEPROM using the EERD register. |
9a799d71 | 1157 | **/ |
68c7005d ET |
1158 | s32 ixgbe_read_eerd_buffer_generic(struct ixgbe_hw *hw, u16 offset, |
1159 | u16 words, u16 *data) | |
9a799d71 AK |
1160 | { |
1161 | u32 eerd; | |
e90dd264 | 1162 | s32 status; |
68c7005d | 1163 | u32 i; |
9a799d71 | 1164 | |
c44ade9e JB |
1165 | hw->eeprom.ops.init_params(hw); |
1166 | ||
e90dd264 MR |
1167 | if (words == 0) |
1168 | return IXGBE_ERR_INVALID_ARGUMENT; | |
68c7005d | 1169 | |
e90dd264 MR |
1170 | if (offset >= hw->eeprom.word_size) |
1171 | return IXGBE_ERR_EEPROM; | |
c44ade9e | 1172 | |
68c7005d | 1173 | for (i = 0; i < words; i++) { |
d0111575 | 1174 | eerd = ((offset + i) << IXGBE_EEPROM_RW_ADDR_SHIFT) | |
68c7005d | 1175 | IXGBE_EEPROM_RW_REG_START; |
9a799d71 | 1176 | |
68c7005d ET |
1177 | IXGBE_WRITE_REG(hw, IXGBE_EERD, eerd); |
1178 | status = ixgbe_poll_eerd_eewr_done(hw, IXGBE_NVM_POLL_READ); | |
9a799d71 | 1179 | |
68c7005d ET |
1180 | if (status == 0) { |
1181 | data[i] = (IXGBE_READ_REG(hw, IXGBE_EERD) >> | |
1182 | IXGBE_EEPROM_RW_REG_DATA); | |
1183 | } else { | |
1184 | hw_dbg(hw, "Eeprom read timed out\n"); | |
e90dd264 | 1185 | return status; |
68c7005d ET |
1186 | } |
1187 | } | |
e90dd264 MR |
1188 | |
1189 | return 0; | |
68c7005d | 1190 | } |
9a799d71 | 1191 | |
68c7005d ET |
1192 | /** |
1193 | * ixgbe_detect_eeprom_page_size_generic - Detect EEPROM page size | |
1194 | * @hw: pointer to hardware structure | |
1195 | * @offset: offset within the EEPROM to be used as a scratch pad | |
1196 | * | |
1197 | * Discover EEPROM page size by writing marching data at given offset. | |
1198 | * This function is called only when we are writing a new large buffer | |
1199 | * at given offset so the data would be overwritten anyway. | |
1200 | **/ | |
1201 | static s32 ixgbe_detect_eeprom_page_size_generic(struct ixgbe_hw *hw, | |
1202 | u16 offset) | |
1203 | { | |
1204 | u16 data[IXGBE_EEPROM_PAGE_SIZE_MAX]; | |
e90dd264 | 1205 | s32 status; |
68c7005d ET |
1206 | u16 i; |
1207 | ||
1208 | for (i = 0; i < IXGBE_EEPROM_PAGE_SIZE_MAX; i++) | |
1209 | data[i] = i; | |
1210 | ||
1211 | hw->eeprom.word_page_size = IXGBE_EEPROM_PAGE_SIZE_MAX; | |
1212 | status = ixgbe_write_eeprom_buffer_bit_bang(hw, offset, | |
1213 | IXGBE_EEPROM_PAGE_SIZE_MAX, data); | |
1214 | hw->eeprom.word_page_size = 0; | |
e90dd264 MR |
1215 | if (status) |
1216 | return status; | |
68c7005d ET |
1217 | |
1218 | status = ixgbe_read_eeprom_buffer_bit_bang(hw, offset, 1, data); | |
e90dd264 MR |
1219 | if (status) |
1220 | return status; | |
68c7005d ET |
1221 | |
1222 | /* | |
1223 | * When writing in burst more than the actual page size | |
1224 | * EEPROM address wraps around current page. | |
1225 | */ | |
1226 | hw->eeprom.word_page_size = IXGBE_EEPROM_PAGE_SIZE_MAX - data[0]; | |
1227 | ||
c5ffe7e1 | 1228 | hw_dbg(hw, "Detected EEPROM page size = %d words.\n", |
68c7005d | 1229 | hw->eeprom.word_page_size); |
e90dd264 | 1230 | return 0; |
9a799d71 AK |
1231 | } |
1232 | ||
eb9c3e3e | 1233 | /** |
68c7005d ET |
1234 | * ixgbe_read_eerd_generic - Read EEPROM word using EERD |
1235 | * @hw: pointer to hardware structure | |
1236 | * @offset: offset of word in the EEPROM to read | |
1237 | * @data: word read from the EEPROM | |
1238 | * | |
1239 | * Reads a 16 bit word from the EEPROM using the EERD register. | |
1240 | **/ | |
1241 | s32 ixgbe_read_eerd_generic(struct ixgbe_hw *hw, u16 offset, u16 *data) | |
1242 | { | |
1243 | return ixgbe_read_eerd_buffer_generic(hw, offset, 1, data); | |
1244 | } | |
1245 | ||
1246 | /** | |
1247 | * ixgbe_write_eewr_buffer_generic - Write EEPROM word(s) using EEWR | |
eb9c3e3e ET |
1248 | * @hw: pointer to hardware structure |
1249 | * @offset: offset of word in the EEPROM to write | |
68c7005d ET |
1250 | * @words: number of words |
1251 | * @data: word(s) write to the EEPROM | |
eb9c3e3e | 1252 | * |
68c7005d | 1253 | * Write a 16 bit word(s) to the EEPROM using the EEWR register. |
eb9c3e3e | 1254 | **/ |
68c7005d ET |
1255 | s32 ixgbe_write_eewr_buffer_generic(struct ixgbe_hw *hw, u16 offset, |
1256 | u16 words, u16 *data) | |
eb9c3e3e ET |
1257 | { |
1258 | u32 eewr; | |
e90dd264 | 1259 | s32 status; |
68c7005d | 1260 | u16 i; |
eb9c3e3e ET |
1261 | |
1262 | hw->eeprom.ops.init_params(hw); | |
1263 | ||
e90dd264 MR |
1264 | if (words == 0) |
1265 | return IXGBE_ERR_INVALID_ARGUMENT; | |
68c7005d | 1266 | |
e90dd264 MR |
1267 | if (offset >= hw->eeprom.word_size) |
1268 | return IXGBE_ERR_EEPROM; | |
eb9c3e3e | 1269 | |
68c7005d ET |
1270 | for (i = 0; i < words; i++) { |
1271 | eewr = ((offset + i) << IXGBE_EEPROM_RW_ADDR_SHIFT) | | |
1272 | (data[i] << IXGBE_EEPROM_RW_REG_DATA) | | |
1273 | IXGBE_EEPROM_RW_REG_START; | |
eb9c3e3e | 1274 | |
68c7005d | 1275 | status = ixgbe_poll_eerd_eewr_done(hw, IXGBE_NVM_POLL_WRITE); |
e90dd264 | 1276 | if (status) { |
68c7005d | 1277 | hw_dbg(hw, "Eeprom write EEWR timed out\n"); |
e90dd264 | 1278 | return status; |
68c7005d | 1279 | } |
eb9c3e3e | 1280 | |
68c7005d | 1281 | IXGBE_WRITE_REG(hw, IXGBE_EEWR, eewr); |
eb9c3e3e | 1282 | |
68c7005d | 1283 | status = ixgbe_poll_eerd_eewr_done(hw, IXGBE_NVM_POLL_WRITE); |
e90dd264 | 1284 | if (status) { |
68c7005d | 1285 | hw_dbg(hw, "Eeprom write EEWR timed out\n"); |
e90dd264 | 1286 | return status; |
68c7005d | 1287 | } |
eb9c3e3e ET |
1288 | } |
1289 | ||
e90dd264 | 1290 | return 0; |
eb9c3e3e ET |
1291 | } |
1292 | ||
68c7005d ET |
1293 | /** |
1294 | * ixgbe_write_eewr_generic - Write EEPROM word using EEWR | |
1295 | * @hw: pointer to hardware structure | |
1296 | * @offset: offset of word in the EEPROM to write | |
1297 | * @data: word write to the EEPROM | |
1298 | * | |
1299 | * Write a 16 bit word to the EEPROM using the EEWR register. | |
1300 | **/ | |
1301 | s32 ixgbe_write_eewr_generic(struct ixgbe_hw *hw, u16 offset, u16 data) | |
1302 | { | |
1303 | return ixgbe_write_eewr_buffer_generic(hw, offset, 1, &data); | |
1304 | } | |
1305 | ||
9a799d71 | 1306 | /** |
21ce849b | 1307 | * ixgbe_poll_eerd_eewr_done - Poll EERD read or EEWR write status |
9a799d71 | 1308 | * @hw: pointer to hardware structure |
21ce849b | 1309 | * @ee_reg: EEPROM flag for polling |
9a799d71 | 1310 | * |
21ce849b MC |
1311 | * Polls the status bit (bit 1) of the EERD or EEWR to determine when the |
1312 | * read or write is done respectively. | |
9a799d71 | 1313 | **/ |
eb9c3e3e | 1314 | static s32 ixgbe_poll_eerd_eewr_done(struct ixgbe_hw *hw, u32 ee_reg) |
9a799d71 AK |
1315 | { |
1316 | u32 i; | |
1317 | u32 reg; | |
9a799d71 | 1318 | |
21ce849b MC |
1319 | for (i = 0; i < IXGBE_EERD_EEWR_ATTEMPTS; i++) { |
1320 | if (ee_reg == IXGBE_NVM_POLL_READ) | |
1321 | reg = IXGBE_READ_REG(hw, IXGBE_EERD); | |
1322 | else | |
1323 | reg = IXGBE_READ_REG(hw, IXGBE_EEWR); | |
1324 | ||
1325 | if (reg & IXGBE_EEPROM_RW_REG_DONE) { | |
e90dd264 | 1326 | return 0; |
9a799d71 AK |
1327 | } |
1328 | udelay(5); | |
1329 | } | |
e90dd264 | 1330 | return IXGBE_ERR_EEPROM; |
9a799d71 AK |
1331 | } |
1332 | ||
c44ade9e JB |
1333 | /** |
1334 | * ixgbe_acquire_eeprom - Acquire EEPROM using bit-bang | |
1335 | * @hw: pointer to hardware structure | |
1336 | * | |
1337 | * Prepares EEPROM for access using bit-bang method. This function should | |
1338 | * be called before issuing a command to the EEPROM. | |
1339 | **/ | |
1340 | static s32 ixgbe_acquire_eeprom(struct ixgbe_hw *hw) | |
1341 | { | |
dbf893ee | 1342 | u32 eec; |
c44ade9e JB |
1343 | u32 i; |
1344 | ||
5e655105 | 1345 | if (hw->mac.ops.acquire_swfw_sync(hw, IXGBE_GSSR_EEP_SM) != 0) |
e90dd264 | 1346 | return IXGBE_ERR_SWFW_SYNC; |
c44ade9e | 1347 | |
9a900eca | 1348 | eec = IXGBE_READ_REG(hw, IXGBE_EEC(hw)); |
c44ade9e | 1349 | |
e90dd264 MR |
1350 | /* Request EEPROM Access */ |
1351 | eec |= IXGBE_EEC_REQ; | |
9a900eca | 1352 | IXGBE_WRITE_REG(hw, IXGBE_EEC(hw), eec); |
c44ade9e | 1353 | |
e90dd264 | 1354 | for (i = 0; i < IXGBE_EEPROM_GRANT_ATTEMPTS; i++) { |
9a900eca | 1355 | eec = IXGBE_READ_REG(hw, IXGBE_EEC(hw)); |
e90dd264 MR |
1356 | if (eec & IXGBE_EEC_GNT) |
1357 | break; | |
1358 | udelay(5); | |
1359 | } | |
c44ade9e | 1360 | |
e90dd264 MR |
1361 | /* Release if grant not acquired */ |
1362 | if (!(eec & IXGBE_EEC_GNT)) { | |
1363 | eec &= ~IXGBE_EEC_REQ; | |
9a900eca | 1364 | IXGBE_WRITE_REG(hw, IXGBE_EEC(hw), eec); |
e90dd264 | 1365 | hw_dbg(hw, "Could not acquire EEPROM grant\n"); |
c44ade9e | 1366 | |
e90dd264 MR |
1367 | hw->mac.ops.release_swfw_sync(hw, IXGBE_GSSR_EEP_SM); |
1368 | return IXGBE_ERR_EEPROM; | |
c44ade9e | 1369 | } |
e90dd264 MR |
1370 | |
1371 | /* Setup EEPROM for Read/Write */ | |
1372 | /* Clear CS and SK */ | |
1373 | eec &= ~(IXGBE_EEC_CS | IXGBE_EEC_SK); | |
9a900eca | 1374 | IXGBE_WRITE_REG(hw, IXGBE_EEC(hw), eec); |
e90dd264 MR |
1375 | IXGBE_WRITE_FLUSH(hw); |
1376 | udelay(1); | |
1377 | return 0; | |
c44ade9e JB |
1378 | } |
1379 | ||
9a799d71 AK |
1380 | /** |
1381 | * ixgbe_get_eeprom_semaphore - Get hardware semaphore | |
1382 | * @hw: pointer to hardware structure | |
1383 | * | |
1384 | * Sets the hardware semaphores so EEPROM access can occur for bit-bang method | |
1385 | **/ | |
1386 | static s32 ixgbe_get_eeprom_semaphore(struct ixgbe_hw *hw) | |
1387 | { | |
dbf893ee | 1388 | u32 timeout = 2000; |
9a799d71 AK |
1389 | u32 i; |
1390 | u32 swsm; | |
1391 | ||
9a799d71 AK |
1392 | /* Get SMBI software semaphore between device drivers first */ |
1393 | for (i = 0; i < timeout; i++) { | |
1394 | /* | |
1395 | * If the SMBI bit is 0 when we read it, then the bit will be | |
1396 | * set and we have the semaphore | |
1397 | */ | |
9a900eca | 1398 | swsm = IXGBE_READ_REG(hw, IXGBE_SWSM(hw)); |
e90dd264 | 1399 | if (!(swsm & IXGBE_SWSM_SMBI)) |
9a799d71 | 1400 | break; |
d819fc52 | 1401 | usleep_range(50, 100); |
9a799d71 AK |
1402 | } |
1403 | ||
51275d37 | 1404 | if (i == timeout) { |
6ec1b71f | 1405 | hw_dbg(hw, "Driver can't access the Eeprom - SMBI Semaphore not granted.\n"); |
e90dd264 | 1406 | /* this release is particularly important because our attempts |
51275d37 ET |
1407 | * above to get the semaphore may have succeeded, and if there |
1408 | * was a timeout, we should unconditionally clear the semaphore | |
1409 | * bits to free the driver to make progress | |
1410 | */ | |
1411 | ixgbe_release_eeprom_semaphore(hw); | |
1412 | ||
d819fc52 | 1413 | usleep_range(50, 100); |
e90dd264 | 1414 | /* one last try |
51275d37 ET |
1415 | * If the SMBI bit is 0 when we read it, then the bit will be |
1416 | * set and we have the semaphore | |
1417 | */ | |
9a900eca | 1418 | swsm = IXGBE_READ_REG(hw, IXGBE_SWSM(hw)); |
e90dd264 MR |
1419 | if (swsm & IXGBE_SWSM_SMBI) { |
1420 | hw_dbg(hw, "Software semaphore SMBI between device drivers not granted.\n"); | |
1421 | return IXGBE_ERR_EEPROM; | |
1422 | } | |
51275d37 ET |
1423 | } |
1424 | ||
9a799d71 | 1425 | /* Now get the semaphore between SW/FW through the SWESMBI bit */ |
e90dd264 | 1426 | for (i = 0; i < timeout; i++) { |
9a900eca | 1427 | swsm = IXGBE_READ_REG(hw, IXGBE_SWSM(hw)); |
9a799d71 | 1428 | |
e90dd264 MR |
1429 | /* Set the SW EEPROM semaphore bit to request access */ |
1430 | swsm |= IXGBE_SWSM_SWESMBI; | |
9a900eca | 1431 | IXGBE_WRITE_REG(hw, IXGBE_SWSM(hw), swsm); |
9a799d71 | 1432 | |
e90dd264 MR |
1433 | /* If we set the bit successfully then we got the |
1434 | * semaphore. | |
1435 | */ | |
9a900eca | 1436 | swsm = IXGBE_READ_REG(hw, IXGBE_SWSM(hw)); |
e90dd264 MR |
1437 | if (swsm & IXGBE_SWSM_SWESMBI) |
1438 | break; | |
9a799d71 | 1439 | |
e90dd264 MR |
1440 | usleep_range(50, 100); |
1441 | } | |
9a799d71 | 1442 | |
e90dd264 MR |
1443 | /* Release semaphores and return error if SW EEPROM semaphore |
1444 | * was not granted because we don't have access to the EEPROM | |
1445 | */ | |
1446 | if (i >= timeout) { | |
1447 | hw_dbg(hw, "SWESMBI Software EEPROM semaphore not granted.\n"); | |
1448 | ixgbe_release_eeprom_semaphore(hw); | |
1449 | return IXGBE_ERR_EEPROM; | |
9a799d71 AK |
1450 | } |
1451 | ||
e90dd264 | 1452 | return 0; |
9a799d71 AK |
1453 | } |
1454 | ||
1455 | /** | |
1456 | * ixgbe_release_eeprom_semaphore - Release hardware semaphore | |
1457 | * @hw: pointer to hardware structure | |
1458 | * | |
1459 | * This function clears hardware semaphore bits. | |
1460 | **/ | |
1461 | static void ixgbe_release_eeprom_semaphore(struct ixgbe_hw *hw) | |
1462 | { | |
1463 | u32 swsm; | |
1464 | ||
9a900eca | 1465 | swsm = IXGBE_READ_REG(hw, IXGBE_SWSM(hw)); |
9a799d71 AK |
1466 | |
1467 | /* Release both semaphores by writing 0 to the bits SWESMBI and SMBI */ | |
1468 | swsm &= ~(IXGBE_SWSM_SWESMBI | IXGBE_SWSM_SMBI); | |
9a900eca | 1469 | IXGBE_WRITE_REG(hw, IXGBE_SWSM(hw), swsm); |
3957d63d | 1470 | IXGBE_WRITE_FLUSH(hw); |
9a799d71 AK |
1471 | } |
1472 | ||
c44ade9e JB |
1473 | /** |
1474 | * ixgbe_ready_eeprom - Polls for EEPROM ready | |
1475 | * @hw: pointer to hardware structure | |
1476 | **/ | |
1477 | static s32 ixgbe_ready_eeprom(struct ixgbe_hw *hw) | |
1478 | { | |
c44ade9e JB |
1479 | u16 i; |
1480 | u8 spi_stat_reg; | |
1481 | ||
1482 | /* | |
1483 | * Read "Status Register" repeatedly until the LSB is cleared. The | |
1484 | * EEPROM will signal that the command has been completed by clearing | |
1485 | * bit 0 of the internal status register. If it's not cleared within | |
1486 | * 5 milliseconds, then error out. | |
1487 | */ | |
1488 | for (i = 0; i < IXGBE_EEPROM_MAX_RETRY_SPI; i += 5) { | |
1489 | ixgbe_shift_out_eeprom_bits(hw, IXGBE_EEPROM_RDSR_OPCODE_SPI, | |
e7cf745b | 1490 | IXGBE_EEPROM_OPCODE_BITS); |
c44ade9e JB |
1491 | spi_stat_reg = (u8)ixgbe_shift_in_eeprom_bits(hw, 8); |
1492 | if (!(spi_stat_reg & IXGBE_EEPROM_STATUS_RDY_SPI)) | |
1493 | break; | |
1494 | ||
1495 | udelay(5); | |
1496 | ixgbe_standby_eeprom(hw); | |
6403eab1 | 1497 | } |
c44ade9e JB |
1498 | |
1499 | /* | |
1500 | * On some parts, SPI write time could vary from 0-20mSec on 3.3V | |
1501 | * devices (and only 0-5mSec on 5V devices) | |
1502 | */ | |
1503 | if (i >= IXGBE_EEPROM_MAX_RETRY_SPI) { | |
1504 | hw_dbg(hw, "SPI EEPROM Status error\n"); | |
e90dd264 | 1505 | return IXGBE_ERR_EEPROM; |
c44ade9e JB |
1506 | } |
1507 | ||
e90dd264 | 1508 | return 0; |
c44ade9e JB |
1509 | } |
1510 | ||
1511 | /** | |
1512 | * ixgbe_standby_eeprom - Returns EEPROM to a "standby" state | |
1513 | * @hw: pointer to hardware structure | |
1514 | **/ | |
1515 | static void ixgbe_standby_eeprom(struct ixgbe_hw *hw) | |
1516 | { | |
1517 | u32 eec; | |
1518 | ||
9a900eca | 1519 | eec = IXGBE_READ_REG(hw, IXGBE_EEC(hw)); |
c44ade9e JB |
1520 | |
1521 | /* Toggle CS to flush commands */ | |
1522 | eec |= IXGBE_EEC_CS; | |
9a900eca | 1523 | IXGBE_WRITE_REG(hw, IXGBE_EEC(hw), eec); |
c44ade9e JB |
1524 | IXGBE_WRITE_FLUSH(hw); |
1525 | udelay(1); | |
1526 | eec &= ~IXGBE_EEC_CS; | |
9a900eca | 1527 | IXGBE_WRITE_REG(hw, IXGBE_EEC(hw), eec); |
c44ade9e JB |
1528 | IXGBE_WRITE_FLUSH(hw); |
1529 | udelay(1); | |
1530 | } | |
1531 | ||
1532 | /** | |
1533 | * ixgbe_shift_out_eeprom_bits - Shift data bits out to the EEPROM. | |
1534 | * @hw: pointer to hardware structure | |
1535 | * @data: data to send to the EEPROM | |
1536 | * @count: number of bits to shift out | |
1537 | **/ | |
1538 | static void ixgbe_shift_out_eeprom_bits(struct ixgbe_hw *hw, u16 data, | |
e7cf745b | 1539 | u16 count) |
c44ade9e JB |
1540 | { |
1541 | u32 eec; | |
1542 | u32 mask; | |
1543 | u32 i; | |
1544 | ||
9a900eca | 1545 | eec = IXGBE_READ_REG(hw, IXGBE_EEC(hw)); |
c44ade9e JB |
1546 | |
1547 | /* | |
1548 | * Mask is used to shift "count" bits of "data" out to the EEPROM | |
1549 | * one bit at a time. Determine the starting bit based on count | |
1550 | */ | |
b4f47a48 | 1551 | mask = BIT(count - 1); |
c44ade9e JB |
1552 | |
1553 | for (i = 0; i < count; i++) { | |
1554 | /* | |
1555 | * A "1" is shifted out to the EEPROM by setting bit "DI" to a | |
1556 | * "1", and then raising and then lowering the clock (the SK | |
1557 | * bit controls the clock input to the EEPROM). A "0" is | |
1558 | * shifted out to the EEPROM by setting "DI" to "0" and then | |
1559 | * raising and then lowering the clock. | |
1560 | */ | |
1561 | if (data & mask) | |
1562 | eec |= IXGBE_EEC_DI; | |
1563 | else | |
1564 | eec &= ~IXGBE_EEC_DI; | |
1565 | ||
9a900eca | 1566 | IXGBE_WRITE_REG(hw, IXGBE_EEC(hw), eec); |
c44ade9e JB |
1567 | IXGBE_WRITE_FLUSH(hw); |
1568 | ||
1569 | udelay(1); | |
1570 | ||
1571 | ixgbe_raise_eeprom_clk(hw, &eec); | |
1572 | ixgbe_lower_eeprom_clk(hw, &eec); | |
1573 | ||
1574 | /* | |
1575 | * Shift mask to signify next bit of data to shift in to the | |
1576 | * EEPROM | |
1577 | */ | |
1578 | mask = mask >> 1; | |
6403eab1 | 1579 | } |
c44ade9e JB |
1580 | |
1581 | /* We leave the "DI" bit set to "0" when we leave this routine. */ | |
1582 | eec &= ~IXGBE_EEC_DI; | |
9a900eca | 1583 | IXGBE_WRITE_REG(hw, IXGBE_EEC(hw), eec); |
c44ade9e JB |
1584 | IXGBE_WRITE_FLUSH(hw); |
1585 | } | |
1586 | ||
1587 | /** | |
1588 | * ixgbe_shift_in_eeprom_bits - Shift data bits in from the EEPROM | |
1589 | * @hw: pointer to hardware structure | |
5ba643c6 | 1590 | * @count: number of bits to shift |
c44ade9e JB |
1591 | **/ |
1592 | static u16 ixgbe_shift_in_eeprom_bits(struct ixgbe_hw *hw, u16 count) | |
1593 | { | |
1594 | u32 eec; | |
1595 | u32 i; | |
1596 | u16 data = 0; | |
1597 | ||
1598 | /* | |
1599 | * In order to read a register from the EEPROM, we need to shift | |
1600 | * 'count' bits in from the EEPROM. Bits are "shifted in" by raising | |
1601 | * the clock input to the EEPROM (setting the SK bit), and then reading | |
1602 | * the value of the "DO" bit. During this "shifting in" process the | |
1603 | * "DI" bit should always be clear. | |
1604 | */ | |
9a900eca | 1605 | eec = IXGBE_READ_REG(hw, IXGBE_EEC(hw)); |
c44ade9e JB |
1606 | |
1607 | eec &= ~(IXGBE_EEC_DO | IXGBE_EEC_DI); | |
1608 | ||
1609 | for (i = 0; i < count; i++) { | |
1610 | data = data << 1; | |
1611 | ixgbe_raise_eeprom_clk(hw, &eec); | |
1612 | ||
9a900eca | 1613 | eec = IXGBE_READ_REG(hw, IXGBE_EEC(hw)); |
c44ade9e JB |
1614 | |
1615 | eec &= ~(IXGBE_EEC_DI); | |
1616 | if (eec & IXGBE_EEC_DO) | |
1617 | data |= 1; | |
1618 | ||
1619 | ixgbe_lower_eeprom_clk(hw, &eec); | |
1620 | } | |
1621 | ||
1622 | return data; | |
1623 | } | |
1624 | ||
1625 | /** | |
1626 | * ixgbe_raise_eeprom_clk - Raises the EEPROM's clock input. | |
1627 | * @hw: pointer to hardware structure | |
1628 | * @eec: EEC register's current value | |
1629 | **/ | |
1630 | static void ixgbe_raise_eeprom_clk(struct ixgbe_hw *hw, u32 *eec) | |
1631 | { | |
1632 | /* | |
1633 | * Raise the clock input to the EEPROM | |
1634 | * (setting the SK bit), then delay | |
1635 | */ | |
1636 | *eec = *eec | IXGBE_EEC_SK; | |
9a900eca | 1637 | IXGBE_WRITE_REG(hw, IXGBE_EEC(hw), *eec); |
c44ade9e JB |
1638 | IXGBE_WRITE_FLUSH(hw); |
1639 | udelay(1); | |
1640 | } | |
1641 | ||
1642 | /** | |
1643 | * ixgbe_lower_eeprom_clk - Lowers the EEPROM's clock input. | |
1644 | * @hw: pointer to hardware structure | |
5ba643c6 | 1645 | * @eec: EEC's current value |
c44ade9e JB |
1646 | **/ |
1647 | static void ixgbe_lower_eeprom_clk(struct ixgbe_hw *hw, u32 *eec) | |
1648 | { | |
1649 | /* | |
1650 | * Lower the clock input to the EEPROM (clearing the SK bit), then | |
1651 | * delay | |
1652 | */ | |
1653 | *eec = *eec & ~IXGBE_EEC_SK; | |
9a900eca | 1654 | IXGBE_WRITE_REG(hw, IXGBE_EEC(hw), *eec); |
c44ade9e JB |
1655 | IXGBE_WRITE_FLUSH(hw); |
1656 | udelay(1); | |
1657 | } | |
1658 | ||
1659 | /** | |
1660 | * ixgbe_release_eeprom - Release EEPROM, release semaphores | |
1661 | * @hw: pointer to hardware structure | |
1662 | **/ | |
1663 | static void ixgbe_release_eeprom(struct ixgbe_hw *hw) | |
1664 | { | |
1665 | u32 eec; | |
1666 | ||
9a900eca | 1667 | eec = IXGBE_READ_REG(hw, IXGBE_EEC(hw)); |
c44ade9e JB |
1668 | |
1669 | eec |= IXGBE_EEC_CS; /* Pull CS high */ | |
1670 | eec &= ~IXGBE_EEC_SK; /* Lower SCK */ | |
1671 | ||
9a900eca | 1672 | IXGBE_WRITE_REG(hw, IXGBE_EEC(hw), eec); |
c44ade9e JB |
1673 | IXGBE_WRITE_FLUSH(hw); |
1674 | ||
1675 | udelay(1); | |
1676 | ||
1677 | /* Stop requesting EEPROM access */ | |
1678 | eec &= ~IXGBE_EEC_REQ; | |
9a900eca | 1679 | IXGBE_WRITE_REG(hw, IXGBE_EEC(hw), eec); |
c44ade9e | 1680 | |
90827996 | 1681 | hw->mac.ops.release_swfw_sync(hw, IXGBE_GSSR_EEP_SM); |
dbf893ee | 1682 | |
032b4325 DS |
1683 | /* |
1684 | * Delay before attempt to obtain semaphore again to allow FW | |
1685 | * access. semaphore_delay is in ms we need us for usleep_range | |
1686 | */ | |
1687 | usleep_range(hw->eeprom.semaphore_delay * 1000, | |
1688 | hw->eeprom.semaphore_delay * 2000); | |
c44ade9e JB |
1689 | } |
1690 | ||
9a799d71 | 1691 | /** |
dbf893ee | 1692 | * ixgbe_calc_eeprom_checksum_generic - Calculates and returns the checksum |
9a799d71 AK |
1693 | * @hw: pointer to hardware structure |
1694 | **/ | |
735c35af | 1695 | s32 ixgbe_calc_eeprom_checksum_generic(struct ixgbe_hw *hw) |
9a799d71 AK |
1696 | { |
1697 | u16 i; | |
1698 | u16 j; | |
1699 | u16 checksum = 0; | |
1700 | u16 length = 0; | |
1701 | u16 pointer = 0; | |
1702 | u16 word = 0; | |
1703 | ||
1704 | /* Include 0x0-0x3F in the checksum */ | |
1705 | for (i = 0; i < IXGBE_EEPROM_CHECKSUM; i++) { | |
735c35af | 1706 | if (hw->eeprom.ops.read(hw, i, &word)) { |
9a799d71 AK |
1707 | hw_dbg(hw, "EEPROM read failed\n"); |
1708 | break; | |
1709 | } | |
1710 | checksum += word; | |
1711 | } | |
1712 | ||
1713 | /* Include all data from pointers except for the fw pointer */ | |
1714 | for (i = IXGBE_PCIE_ANALOG_PTR; i < IXGBE_FW_PTR; i++) { | |
735c35af DS |
1715 | if (hw->eeprom.ops.read(hw, i, &pointer)) { |
1716 | hw_dbg(hw, "EEPROM read failed\n"); | |
1717 | return IXGBE_ERR_EEPROM; | |
1718 | } | |
1719 | ||
1720 | /* If the pointer seems invalid */ | |
1721 | if (pointer == 0xFFFF || pointer == 0) | |
1722 | continue; | |
1723 | ||
1724 | if (hw->eeprom.ops.read(hw, pointer, &length)) { | |
1725 | hw_dbg(hw, "EEPROM read failed\n"); | |
1726 | return IXGBE_ERR_EEPROM; | |
1727 | } | |
9a799d71 | 1728 | |
735c35af DS |
1729 | if (length == 0xFFFF || length == 0) |
1730 | continue; | |
9a799d71 | 1731 | |
735c35af DS |
1732 | for (j = pointer + 1; j <= pointer + length; j++) { |
1733 | if (hw->eeprom.ops.read(hw, j, &word)) { | |
1734 | hw_dbg(hw, "EEPROM read failed\n"); | |
1735 | return IXGBE_ERR_EEPROM; | |
9a799d71 | 1736 | } |
735c35af | 1737 | checksum += word; |
9a799d71 AK |
1738 | } |
1739 | } | |
1740 | ||
1741 | checksum = (u16)IXGBE_EEPROM_SUM - checksum; | |
1742 | ||
735c35af | 1743 | return (s32)checksum; |
9a799d71 AK |
1744 | } |
1745 | ||
1746 | /** | |
c44ade9e | 1747 | * ixgbe_validate_eeprom_checksum_generic - Validate EEPROM checksum |
9a799d71 AK |
1748 | * @hw: pointer to hardware structure |
1749 | * @checksum_val: calculated checksum | |
1750 | * | |
1751 | * Performs checksum calculation and validates the EEPROM checksum. If the | |
1752 | * caller does not need checksum_val, the value can be NULL. | |
1753 | **/ | |
c44ade9e | 1754 | s32 ixgbe_validate_eeprom_checksum_generic(struct ixgbe_hw *hw, |
e7cf745b | 1755 | u16 *checksum_val) |
9a799d71 AK |
1756 | { |
1757 | s32 status; | |
1758 | u16 checksum; | |
1759 | u16 read_checksum = 0; | |
1760 | ||
1761 | /* | |
1762 | * Read the first word from the EEPROM. If this times out or fails, do | |
1763 | * not continue or we could be in for a very long wait while every | |
1764 | * EEPROM read fails | |
1765 | */ | |
c44ade9e | 1766 | status = hw->eeprom.ops.read(hw, 0, &checksum); |
735c35af DS |
1767 | if (status) { |
1768 | hw_dbg(hw, "EEPROM read failed\n"); | |
1769 | return status; | |
1770 | } | |
9a799d71 | 1771 | |
735c35af DS |
1772 | status = hw->eeprom.ops.calc_checksum(hw); |
1773 | if (status < 0) | |
1774 | return status; | |
9a799d71 | 1775 | |
735c35af | 1776 | checksum = (u16)(status & 0xffff); |
9a799d71 | 1777 | |
735c35af DS |
1778 | status = hw->eeprom.ops.read(hw, IXGBE_EEPROM_CHECKSUM, &read_checksum); |
1779 | if (status) { | |
9a799d71 | 1780 | hw_dbg(hw, "EEPROM read failed\n"); |
735c35af | 1781 | return status; |
9a799d71 AK |
1782 | } |
1783 | ||
735c35af DS |
1784 | /* Verify read checksum from EEPROM is the same as |
1785 | * calculated checksum | |
1786 | */ | |
1787 | if (read_checksum != checksum) | |
1788 | status = IXGBE_ERR_EEPROM_CHECKSUM; | |
1789 | ||
1790 | /* If the user cares, return the calculated checksum */ | |
1791 | if (checksum_val) | |
1792 | *checksum_val = checksum; | |
1793 | ||
9a799d71 AK |
1794 | return status; |
1795 | } | |
1796 | ||
c44ade9e JB |
1797 | /** |
1798 | * ixgbe_update_eeprom_checksum_generic - Updates the EEPROM checksum | |
1799 | * @hw: pointer to hardware structure | |
1800 | **/ | |
1801 | s32 ixgbe_update_eeprom_checksum_generic(struct ixgbe_hw *hw) | |
1802 | { | |
1803 | s32 status; | |
1804 | u16 checksum; | |
1805 | ||
1806 | /* | |
1807 | * Read the first word from the EEPROM. If this times out or fails, do | |
1808 | * not continue or we could be in for a very long wait while every | |
1809 | * EEPROM read fails | |
1810 | */ | |
1811 | status = hw->eeprom.ops.read(hw, 0, &checksum); | |
735c35af | 1812 | if (status) { |
c44ade9e | 1813 | hw_dbg(hw, "EEPROM read failed\n"); |
735c35af | 1814 | return status; |
c44ade9e JB |
1815 | } |
1816 | ||
735c35af DS |
1817 | status = hw->eeprom.ops.calc_checksum(hw); |
1818 | if (status < 0) | |
1819 | return status; | |
1820 | ||
1821 | checksum = (u16)(status & 0xffff); | |
1822 | ||
1823 | status = hw->eeprom.ops.write(hw, IXGBE_EEPROM_CHECKSUM, checksum); | |
1824 | ||
c44ade9e JB |
1825 | return status; |
1826 | } | |
1827 | ||
9a799d71 | 1828 | /** |
c44ade9e | 1829 | * ixgbe_set_rar_generic - Set Rx address register |
9a799d71 | 1830 | * @hw: pointer to hardware structure |
9a799d71 | 1831 | * @index: Receive address register to write |
c44ade9e JB |
1832 | * @addr: Address to put into receive address register |
1833 | * @vmdq: VMDq "set" or "pool" index | |
9a799d71 AK |
1834 | * @enable_addr: set flag that address is active |
1835 | * | |
1836 | * Puts an ethernet address into a receive address register. | |
1837 | **/ | |
c44ade9e | 1838 | s32 ixgbe_set_rar_generic(struct ixgbe_hw *hw, u32 index, u8 *addr, u32 vmdq, |
e7cf745b | 1839 | u32 enable_addr) |
9a799d71 AK |
1840 | { |
1841 | u32 rar_low, rar_high; | |
c44ade9e JB |
1842 | u32 rar_entries = hw->mac.num_rar_entries; |
1843 | ||
c700f4e6 ET |
1844 | /* Make sure we are using a valid rar index range */ |
1845 | if (index >= rar_entries) { | |
1846 | hw_dbg(hw, "RAR index %d is out of range.\n", index); | |
1847 | return IXGBE_ERR_INVALID_ARGUMENT; | |
1848 | } | |
1849 | ||
c44ade9e JB |
1850 | /* setup VMDq pool selection before this RAR gets enabled */ |
1851 | hw->mac.ops.set_vmdq(hw, index, vmdq); | |
9a799d71 | 1852 | |
c700f4e6 ET |
1853 | /* |
1854 | * HW expects these in little endian so we reverse the byte | |
1855 | * order from network order (big endian) to little endian | |
1856 | */ | |
1857 | rar_low = ((u32)addr[0] | | |
1858 | ((u32)addr[1] << 8) | | |
1859 | ((u32)addr[2] << 16) | | |
1860 | ((u32)addr[3] << 24)); | |
1861 | /* | |
1862 | * Some parts put the VMDq setting in the extra RAH bits, | |
1863 | * so save everything except the lower 16 bits that hold part | |
1864 | * of the address and the address valid bit. | |
1865 | */ | |
1866 | rar_high = IXGBE_READ_REG(hw, IXGBE_RAH(index)); | |
1867 | rar_high &= ~(0x0000FFFF | IXGBE_RAH_AV); | |
1868 | rar_high |= ((u32)addr[4] | ((u32)addr[5] << 8)); | |
9a799d71 | 1869 | |
c700f4e6 ET |
1870 | if (enable_addr != 0) |
1871 | rar_high |= IXGBE_RAH_AV; | |
9a799d71 | 1872 | |
d14c780c AD |
1873 | /* Record lower 32 bits of MAC address and then make |
1874 | * sure that write is flushed to hardware before writing | |
1875 | * the upper 16 bits and setting the valid bit. | |
1876 | */ | |
c700f4e6 | 1877 | IXGBE_WRITE_REG(hw, IXGBE_RAL(index), rar_low); |
d14c780c | 1878 | IXGBE_WRITE_FLUSH(hw); |
c700f4e6 | 1879 | IXGBE_WRITE_REG(hw, IXGBE_RAH(index), rar_high); |
c44ade9e JB |
1880 | |
1881 | return 0; | |
1882 | } | |
1883 | ||
1884 | /** | |
1885 | * ixgbe_clear_rar_generic - Remove Rx address register | |
1886 | * @hw: pointer to hardware structure | |
1887 | * @index: Receive address register to write | |
1888 | * | |
1889 | * Clears an ethernet address from a receive address register. | |
1890 | **/ | |
1891 | s32 ixgbe_clear_rar_generic(struct ixgbe_hw *hw, u32 index) | |
1892 | { | |
1893 | u32 rar_high; | |
1894 | u32 rar_entries = hw->mac.num_rar_entries; | |
1895 | ||
1896 | /* Make sure we are using a valid rar index range */ | |
c700f4e6 | 1897 | if (index >= rar_entries) { |
c44ade9e | 1898 | hw_dbg(hw, "RAR index %d is out of range.\n", index); |
c700f4e6 | 1899 | return IXGBE_ERR_INVALID_ARGUMENT; |
c44ade9e JB |
1900 | } |
1901 | ||
c700f4e6 ET |
1902 | /* |
1903 | * Some parts put the VMDq setting in the extra RAH bits, | |
1904 | * so save everything except the lower 16 bits that hold part | |
1905 | * of the address and the address valid bit. | |
1906 | */ | |
1907 | rar_high = IXGBE_READ_REG(hw, IXGBE_RAH(index)); | |
1908 | rar_high &= ~(0x0000FFFF | IXGBE_RAH_AV); | |
1909 | ||
d14c780c AD |
1910 | /* Clear the address valid bit and upper 16 bits of the address |
1911 | * before clearing the lower bits. This way we aren't updating | |
1912 | * a live filter. | |
1913 | */ | |
c700f4e6 | 1914 | IXGBE_WRITE_REG(hw, IXGBE_RAH(index), rar_high); |
d14c780c AD |
1915 | IXGBE_WRITE_FLUSH(hw); |
1916 | IXGBE_WRITE_REG(hw, IXGBE_RAL(index), 0); | |
c700f4e6 | 1917 | |
c44ade9e JB |
1918 | /* clear VMDq pool/queue selection for this RAR */ |
1919 | hw->mac.ops.clear_vmdq(hw, index, IXGBE_CLEAR_VMDQ_ALL); | |
9a799d71 AK |
1920 | |
1921 | return 0; | |
1922 | } | |
1923 | ||
c44ade9e JB |
1924 | /** |
1925 | * ixgbe_init_rx_addrs_generic - Initializes receive address filters. | |
9a799d71 AK |
1926 | * @hw: pointer to hardware structure |
1927 | * | |
1928 | * Places the MAC address in receive address register 0 and clears the rest | |
c44ade9e | 1929 | * of the receive address registers. Clears the multicast table. Assumes |
9a799d71 AK |
1930 | * the receiver is in reset when the routine is called. |
1931 | **/ | |
c44ade9e | 1932 | s32 ixgbe_init_rx_addrs_generic(struct ixgbe_hw *hw) |
9a799d71 AK |
1933 | { |
1934 | u32 i; | |
2c5645cf | 1935 | u32 rar_entries = hw->mac.num_rar_entries; |
9a799d71 AK |
1936 | |
1937 | /* | |
1938 | * If the current mac address is valid, assume it is a software override | |
1939 | * to the permanent address. | |
1940 | * Otherwise, use the permanent address from the eeprom. | |
1941 | */ | |
f8ebc683 | 1942 | if (!is_valid_ether_addr(hw->mac.addr)) { |
9a799d71 | 1943 | /* Get the MAC address from the RAR0 for later reference */ |
c44ade9e | 1944 | hw->mac.ops.get_mac_addr(hw, hw->mac.addr); |
9a799d71 | 1945 | |
ce7194d8 | 1946 | hw_dbg(hw, " Keeping Current RAR0 Addr =%pM\n", hw->mac.addr); |
9a799d71 AK |
1947 | } else { |
1948 | /* Setup the receive address. */ | |
1949 | hw_dbg(hw, "Overriding MAC Address in RAR[0]\n"); | |
ce7194d8 | 1950 | hw_dbg(hw, " New MAC Addr =%pM\n", hw->mac.addr); |
9a799d71 | 1951 | |
c44ade9e | 1952 | hw->mac.ops.set_rar(hw, 0, hw->mac.addr, 0, IXGBE_RAH_AV); |
9a799d71 | 1953 | } |
6e982aea AD |
1954 | |
1955 | /* clear VMDq pool/queue selection for RAR 0 */ | |
1956 | hw->mac.ops.clear_vmdq(hw, 0, IXGBE_CLEAR_VMDQ_ALL); | |
1957 | ||
c44ade9e | 1958 | hw->addr_ctrl.overflow_promisc = 0; |
9a799d71 AK |
1959 | |
1960 | hw->addr_ctrl.rar_used_count = 1; | |
1961 | ||
1962 | /* Zero out the other receive addresses. */ | |
c44ade9e | 1963 | hw_dbg(hw, "Clearing RAR[1-%d]\n", rar_entries - 1); |
9a799d71 AK |
1964 | for (i = 1; i < rar_entries; i++) { |
1965 | IXGBE_WRITE_REG(hw, IXGBE_RAL(i), 0); | |
1966 | IXGBE_WRITE_REG(hw, IXGBE_RAH(i), 0); | |
1967 | } | |
1968 | ||
1969 | /* Clear the MTA */ | |
9a799d71 AK |
1970 | hw->addr_ctrl.mta_in_use = 0; |
1971 | IXGBE_WRITE_REG(hw, IXGBE_MCSTCTRL, hw->mac.mc_filter_type); | |
1972 | ||
1973 | hw_dbg(hw, " Clearing MTA\n"); | |
2c5645cf | 1974 | for (i = 0; i < hw->mac.mcft_size; i++) |
9a799d71 AK |
1975 | IXGBE_WRITE_REG(hw, IXGBE_MTA(i), 0); |
1976 | ||
c44ade9e JB |
1977 | if (hw->mac.ops.init_uta_tables) |
1978 | hw->mac.ops.init_uta_tables(hw); | |
1979 | ||
9a799d71 AK |
1980 | return 0; |
1981 | } | |
1982 | ||
1983 | /** | |
1984 | * ixgbe_mta_vector - Determines bit-vector in multicast table to set | |
1985 | * @hw: pointer to hardware structure | |
1986 | * @mc_addr: the multicast address | |
1987 | * | |
1988 | * Extracts the 12 bits, from a multicast address, to determine which | |
1989 | * bit-vector to set in the multicast table. The hardware uses 12 bits, from | |
1990 | * incoming rx multicast addresses, to determine the bit-vector to check in | |
1991 | * the MTA. Which of the 4 combination, of 12-bits, the hardware uses is set | |
c44ade9e | 1992 | * by the MO field of the MCSTCTRL. The MO field is set during initialization |
9a799d71 AK |
1993 | * to mc_filter_type. |
1994 | **/ | |
1995 | static s32 ixgbe_mta_vector(struct ixgbe_hw *hw, u8 *mc_addr) | |
1996 | { | |
1997 | u32 vector = 0; | |
1998 | ||
1999 | switch (hw->mac.mc_filter_type) { | |
b4617240 | 2000 | case 0: /* use bits [47:36] of the address */ |
9a799d71 AK |
2001 | vector = ((mc_addr[4] >> 4) | (((u16)mc_addr[5]) << 4)); |
2002 | break; | |
b4617240 | 2003 | case 1: /* use bits [46:35] of the address */ |
9a799d71 AK |
2004 | vector = ((mc_addr[4] >> 3) | (((u16)mc_addr[5]) << 5)); |
2005 | break; | |
b4617240 | 2006 | case 2: /* use bits [45:34] of the address */ |
9a799d71 AK |
2007 | vector = ((mc_addr[4] >> 2) | (((u16)mc_addr[5]) << 6)); |
2008 | break; | |
b4617240 | 2009 | case 3: /* use bits [43:32] of the address */ |
9a799d71 AK |
2010 | vector = ((mc_addr[4]) | (((u16)mc_addr[5]) << 8)); |
2011 | break; | |
b4617240 | 2012 | default: /* Invalid mc_filter_type */ |
9a799d71 AK |
2013 | hw_dbg(hw, "MC filter type param set incorrectly\n"); |
2014 | break; | |
2015 | } | |
2016 | ||
2017 | /* vector can only be 12-bits or boundary will be exceeded */ | |
2018 | vector &= 0xFFF; | |
2019 | return vector; | |
2020 | } | |
2021 | ||
2022 | /** | |
2023 | * ixgbe_set_mta - Set bit-vector in multicast table | |
2024 | * @hw: pointer to hardware structure | |
5ba643c6 | 2025 | * @mc_addr: Multicast address |
9a799d71 AK |
2026 | * |
2027 | * Sets the bit-vector in the multicast table. | |
2028 | **/ | |
2029 | static void ixgbe_set_mta(struct ixgbe_hw *hw, u8 *mc_addr) | |
2030 | { | |
2031 | u32 vector; | |
2032 | u32 vector_bit; | |
2033 | u32 vector_reg; | |
9a799d71 AK |
2034 | |
2035 | hw->addr_ctrl.mta_in_use++; | |
2036 | ||
2037 | vector = ixgbe_mta_vector(hw, mc_addr); | |
2038 | hw_dbg(hw, " bit-vector = 0x%03X\n", vector); | |
2039 | ||
2040 | /* | |
2041 | * The MTA is a register array of 128 32-bit registers. It is treated | |
2042 | * like an array of 4096 bits. We want to set bit | |
2043 | * BitArray[vector_value]. So we figure out what register the bit is | |
2044 | * in, read it, OR in the new bit, then write back the new value. The | |
2045 | * register is determined by the upper 7 bits of the vector value and | |
2046 | * the bit within that register are determined by the lower 5 bits of | |
2047 | * the value. | |
2048 | */ | |
2049 | vector_reg = (vector >> 5) & 0x7F; | |
2050 | vector_bit = vector & 0x1F; | |
b4f47a48 | 2051 | hw->mac.mta_shadow[vector_reg] |= BIT(vector_bit); |
9a799d71 AK |
2052 | } |
2053 | ||
9a799d71 | 2054 | /** |
c44ade9e | 2055 | * ixgbe_update_mc_addr_list_generic - Updates MAC list of multicast addresses |
9a799d71 | 2056 | * @hw: pointer to hardware structure |
2853eb89 | 2057 | * @netdev: pointer to net device structure |
9a799d71 AK |
2058 | * |
2059 | * The given list replaces any existing list. Clears the MC addrs from receive | |
c44ade9e | 2060 | * address registers and the multicast table. Uses unused receive address |
9a799d71 AK |
2061 | * registers for the first multicast addresses, and hashes the rest into the |
2062 | * multicast table. | |
2063 | **/ | |
2853eb89 JP |
2064 | s32 ixgbe_update_mc_addr_list_generic(struct ixgbe_hw *hw, |
2065 | struct net_device *netdev) | |
9a799d71 | 2066 | { |
22bedad3 | 2067 | struct netdev_hw_addr *ha; |
9a799d71 | 2068 | u32 i; |
9a799d71 AK |
2069 | |
2070 | /* | |
2071 | * Set the new number of MC addresses that we are being requested to | |
2072 | * use. | |
2073 | */ | |
2853eb89 | 2074 | hw->addr_ctrl.num_mc_addrs = netdev_mc_count(netdev); |
9a799d71 AK |
2075 | hw->addr_ctrl.mta_in_use = 0; |
2076 | ||
80960ab0 | 2077 | /* Clear mta_shadow */ |
9a799d71 | 2078 | hw_dbg(hw, " Clearing MTA\n"); |
80960ab0 | 2079 | memset(&hw->mac.mta_shadow, 0, sizeof(hw->mac.mta_shadow)); |
9a799d71 | 2080 | |
80960ab0 | 2081 | /* Update mta shadow */ |
22bedad3 | 2082 | netdev_for_each_mc_addr(ha, netdev) { |
9a799d71 | 2083 | hw_dbg(hw, " Adding the multicast addresses:\n"); |
22bedad3 | 2084 | ixgbe_set_mta(hw, ha->addr); |
9a799d71 AK |
2085 | } |
2086 | ||
2087 | /* Enable mta */ | |
80960ab0 ET |
2088 | for (i = 0; i < hw->mac.mcft_size; i++) |
2089 | IXGBE_WRITE_REG_ARRAY(hw, IXGBE_MTA(0), i, | |
2090 | hw->mac.mta_shadow[i]); | |
2091 | ||
9a799d71 AK |
2092 | if (hw->addr_ctrl.mta_in_use > 0) |
2093 | IXGBE_WRITE_REG(hw, IXGBE_MCSTCTRL, | |
e7cf745b | 2094 | IXGBE_MCSTCTRL_MFE | hw->mac.mc_filter_type); |
9a799d71 | 2095 | |
c44ade9e | 2096 | hw_dbg(hw, "ixgbe_update_mc_addr_list_generic Complete\n"); |
9a799d71 AK |
2097 | return 0; |
2098 | } | |
2099 | ||
2100 | /** | |
c44ade9e | 2101 | * ixgbe_enable_mc_generic - Enable multicast address in RAR |
9a799d71 AK |
2102 | * @hw: pointer to hardware structure |
2103 | * | |
c44ade9e | 2104 | * Enables multicast address in RAR and the use of the multicast hash table. |
9a799d71 | 2105 | **/ |
c44ade9e | 2106 | s32 ixgbe_enable_mc_generic(struct ixgbe_hw *hw) |
9a799d71 | 2107 | { |
c44ade9e | 2108 | struct ixgbe_addr_filter_info *a = &hw->addr_ctrl; |
9a799d71 | 2109 | |
c44ade9e JB |
2110 | if (a->mta_in_use > 0) |
2111 | IXGBE_WRITE_REG(hw, IXGBE_MCSTCTRL, IXGBE_MCSTCTRL_MFE | | |
e7cf745b | 2112 | hw->mac.mc_filter_type); |
9a799d71 AK |
2113 | |
2114 | return 0; | |
2115 | } | |
2116 | ||
2117 | /** | |
c44ade9e | 2118 | * ixgbe_disable_mc_generic - Disable multicast address in RAR |
9a799d71 | 2119 | * @hw: pointer to hardware structure |
9a799d71 | 2120 | * |
c44ade9e | 2121 | * Disables multicast address in RAR and the use of the multicast hash table. |
9a799d71 | 2122 | **/ |
c44ade9e | 2123 | s32 ixgbe_disable_mc_generic(struct ixgbe_hw *hw) |
9a799d71 | 2124 | { |
c44ade9e | 2125 | struct ixgbe_addr_filter_info *a = &hw->addr_ctrl; |
2b9ade93 | 2126 | |
c44ade9e JB |
2127 | if (a->mta_in_use > 0) |
2128 | IXGBE_WRITE_REG(hw, IXGBE_MCSTCTRL, hw->mac.mc_filter_type); | |
9a799d71 AK |
2129 | |
2130 | return 0; | |
2131 | } | |
2132 | ||
11afc1b1 | 2133 | /** |
620fa036 | 2134 | * ixgbe_fc_enable_generic - Enable flow control |
11afc1b1 | 2135 | * @hw: pointer to hardware structure |
11afc1b1 PW |
2136 | * |
2137 | * Enable flow control according to the current settings. | |
2138 | **/ | |
041441d0 | 2139 | s32 ixgbe_fc_enable_generic(struct ixgbe_hw *hw) |
11afc1b1 | 2140 | { |
620fa036 | 2141 | u32 mflcn_reg, fccfg_reg; |
11afc1b1 | 2142 | u32 reg; |
16b61beb | 2143 | u32 fcrtl, fcrth; |
041441d0 | 2144 | int i; |
70b77628 | 2145 | |
e5776620 | 2146 | /* Validate the water mark configuration. */ |
e90dd264 MR |
2147 | if (!hw->fc.pause_time) |
2148 | return IXGBE_ERR_INVALID_LINK_SETTINGS; | |
70b77628 | 2149 | |
e5776620 JK |
2150 | /* Low water mark of zero causes XOFF floods */ |
2151 | for (i = 0; i < MAX_TRAFFIC_CLASS; i++) { | |
2152 | if ((hw->fc.current_mode & ixgbe_fc_tx_pause) && | |
2153 | hw->fc.high_water[i]) { | |
2154 | if (!hw->fc.low_water[i] || | |
2155 | hw->fc.low_water[i] >= hw->fc.high_water[i]) { | |
2156 | hw_dbg(hw, "Invalid water mark configuration\n"); | |
e90dd264 | 2157 | return IXGBE_ERR_INVALID_LINK_SETTINGS; |
e5776620 JK |
2158 | } |
2159 | } | |
2160 | } | |
2161 | ||
620fa036 | 2162 | /* Negotiate the fc mode to use */ |
2916500d | 2163 | hw->mac.ops.fc_autoneg(hw); |
11afc1b1 | 2164 | |
620fa036 | 2165 | /* Disable any previous flow control settings */ |
11afc1b1 | 2166 | mflcn_reg = IXGBE_READ_REG(hw, IXGBE_MFLCN); |
041441d0 | 2167 | mflcn_reg &= ~(IXGBE_MFLCN_RPFCE_MASK | IXGBE_MFLCN_RFCE); |
11afc1b1 PW |
2168 | |
2169 | fccfg_reg = IXGBE_READ_REG(hw, IXGBE_FCCFG); | |
2170 | fccfg_reg &= ~(IXGBE_FCCFG_TFCE_802_3X | IXGBE_FCCFG_TFCE_PRIORITY); | |
2171 | ||
2172 | /* | |
2173 | * The possible values of fc.current_mode are: | |
2174 | * 0: Flow control is completely disabled | |
2175 | * 1: Rx flow control is enabled (we can receive pause frames, | |
2176 | * but not send pause frames). | |
bb3daa4a PW |
2177 | * 2: Tx flow control is enabled (we can send pause frames but |
2178 | * we do not support receiving pause frames). | |
11afc1b1 PW |
2179 | * 3: Both Rx and Tx flow control (symmetric) are enabled. |
2180 | * other: Invalid. | |
2181 | */ | |
2182 | switch (hw->fc.current_mode) { | |
2183 | case ixgbe_fc_none: | |
620fa036 MC |
2184 | /* |
2185 | * Flow control is disabled by software override or autoneg. | |
2186 | * The code below will actually disable it in the HW. | |
2187 | */ | |
11afc1b1 PW |
2188 | break; |
2189 | case ixgbe_fc_rx_pause: | |
2190 | /* | |
2191 | * Rx Flow control is enabled and Tx Flow control is | |
2192 | * disabled by software override. Since there really | |
2193 | * isn't a way to advertise that we are capable of RX | |
2194 | * Pause ONLY, we will advertise that we support both | |
2195 | * symmetric and asymmetric Rx PAUSE. Later, we will | |
2196 | * disable the adapter's ability to send PAUSE frames. | |
2197 | */ | |
2198 | mflcn_reg |= IXGBE_MFLCN_RFCE; | |
2199 | break; | |
2200 | case ixgbe_fc_tx_pause: | |
2201 | /* | |
2202 | * Tx Flow control is enabled, and Rx Flow control is | |
2203 | * disabled by software override. | |
2204 | */ | |
2205 | fccfg_reg |= IXGBE_FCCFG_TFCE_802_3X; | |
2206 | break; | |
2207 | case ixgbe_fc_full: | |
2208 | /* Flow control (both Rx and Tx) is enabled by SW override. */ | |
2209 | mflcn_reg |= IXGBE_MFLCN_RFCE; | |
2210 | fccfg_reg |= IXGBE_FCCFG_TFCE_802_3X; | |
2211 | break; | |
2212 | default: | |
2213 | hw_dbg(hw, "Flow control param set incorrectly\n"); | |
e90dd264 | 2214 | return IXGBE_ERR_CONFIG; |
11afc1b1 PW |
2215 | } |
2216 | ||
620fa036 | 2217 | /* Set 802.3x based flow control settings. */ |
2132d381 | 2218 | mflcn_reg |= IXGBE_MFLCN_DPF; |
11afc1b1 PW |
2219 | IXGBE_WRITE_REG(hw, IXGBE_MFLCN, mflcn_reg); |
2220 | IXGBE_WRITE_REG(hw, IXGBE_FCCFG, fccfg_reg); | |
2221 | ||
041441d0 AD |
2222 | /* Set up and enable Rx high/low water mark thresholds, enable XON. */ |
2223 | for (i = 0; i < MAX_TRAFFIC_CLASS; i++) { | |
2224 | if ((hw->fc.current_mode & ixgbe_fc_tx_pause) && | |
2225 | hw->fc.high_water[i]) { | |
e5776620 | 2226 | fcrtl = (hw->fc.low_water[i] << 10) | IXGBE_FCRTL_XONE; |
041441d0 AD |
2227 | IXGBE_WRITE_REG(hw, IXGBE_FCRTL_82599(i), fcrtl); |
2228 | fcrth = (hw->fc.high_water[i] << 10) | IXGBE_FCRTH_FCEN; | |
2229 | } else { | |
2230 | IXGBE_WRITE_REG(hw, IXGBE_FCRTL_82599(i), 0); | |
2231 | /* | |
2232 | * In order to prevent Tx hangs when the internal Tx | |
2233 | * switch is enabled we must set the high water mark | |
bc1fc64f MR |
2234 | * to the Rx packet buffer size - 24KB. This allows |
2235 | * the Tx switch to function even under heavy Rx | |
2236 | * workloads. | |
041441d0 | 2237 | */ |
bc1fc64f | 2238 | fcrth = IXGBE_READ_REG(hw, IXGBE_RXPBSIZE(i)) - 24576; |
041441d0 | 2239 | } |
11afc1b1 | 2240 | |
041441d0 AD |
2241 | IXGBE_WRITE_REG(hw, IXGBE_FCRTH_82599(i), fcrth); |
2242 | } | |
16b61beb | 2243 | |
11afc1b1 | 2244 | /* Configure pause time (2 TCs per register) */ |
3b70683f | 2245 | reg = hw->fc.pause_time * 0x00010001U; |
041441d0 AD |
2246 | for (i = 0; i < (MAX_TRAFFIC_CLASS / 2); i++) |
2247 | IXGBE_WRITE_REG(hw, IXGBE_FCTTV(i), reg); | |
2248 | ||
2249 | IXGBE_WRITE_REG(hw, IXGBE_FCRTV, hw->fc.pause_time / 2); | |
11afc1b1 | 2250 | |
e90dd264 | 2251 | return 0; |
11afc1b1 PW |
2252 | } |
2253 | ||
0ecc061d | 2254 | /** |
67a79df2 | 2255 | * ixgbe_negotiate_fc - Negotiate flow control |
0ecc061d | 2256 | * @hw: pointer to hardware structure |
67a79df2 AD |
2257 | * @adv_reg: flow control advertised settings |
2258 | * @lp_reg: link partner's flow control settings | |
2259 | * @adv_sym: symmetric pause bit in advertisement | |
2260 | * @adv_asm: asymmetric pause bit in advertisement | |
2261 | * @lp_sym: symmetric pause bit in link partner advertisement | |
2262 | * @lp_asm: asymmetric pause bit in link partner advertisement | |
0ecc061d | 2263 | * |
67a79df2 AD |
2264 | * Find the intersection between advertised settings and link partner's |
2265 | * advertised settings | |
0ecc061d | 2266 | **/ |
2916500d DS |
2267 | s32 ixgbe_negotiate_fc(struct ixgbe_hw *hw, u32 adv_reg, u32 lp_reg, |
2268 | u32 adv_sym, u32 adv_asm, u32 lp_sym, u32 lp_asm) | |
0ecc061d | 2269 | { |
67a79df2 AD |
2270 | if ((!(adv_reg)) || (!(lp_reg))) |
2271 | return IXGBE_ERR_FC_NOT_NEGOTIATED; | |
0b0c2b31 | 2272 | |
67a79df2 AD |
2273 | if ((adv_reg & adv_sym) && (lp_reg & lp_sym)) { |
2274 | /* | |
2275 | * Now we need to check if the user selected Rx ONLY | |
2276 | * of pause frames. In this case, we had to advertise | |
2277 | * FULL flow control because we could not advertise RX | |
2278 | * ONLY. Hence, we must now check to see if we need to | |
2279 | * turn OFF the TRANSMISSION of PAUSE frames. | |
2280 | */ | |
2281 | if (hw->fc.requested_mode == ixgbe_fc_full) { | |
2282 | hw->fc.current_mode = ixgbe_fc_full; | |
2283 | hw_dbg(hw, "Flow Control = FULL.\n"); | |
2284 | } else { | |
2285 | hw->fc.current_mode = ixgbe_fc_rx_pause; | |
2286 | hw_dbg(hw, "Flow Control=RX PAUSE frames only\n"); | |
2287 | } | |
2288 | } else if (!(adv_reg & adv_sym) && (adv_reg & adv_asm) && | |
2289 | (lp_reg & lp_sym) && (lp_reg & lp_asm)) { | |
2290 | hw->fc.current_mode = ixgbe_fc_tx_pause; | |
2291 | hw_dbg(hw, "Flow Control = TX PAUSE frames only.\n"); | |
2292 | } else if ((adv_reg & adv_sym) && (adv_reg & adv_asm) && | |
2293 | !(lp_reg & lp_sym) && (lp_reg & lp_asm)) { | |
2294 | hw->fc.current_mode = ixgbe_fc_rx_pause; | |
2295 | hw_dbg(hw, "Flow Control = RX PAUSE frames only.\n"); | |
0b0c2b31 | 2296 | } else { |
67a79df2 AD |
2297 | hw->fc.current_mode = ixgbe_fc_none; |
2298 | hw_dbg(hw, "Flow Control = NONE.\n"); | |
539e5f02 | 2299 | } |
67a79df2 | 2300 | return 0; |
0b0c2b31 ET |
2301 | } |
2302 | ||
2303 | /** | |
2304 | * ixgbe_fc_autoneg_fiber - Enable flow control on 1 gig fiber | |
2305 | * @hw: pointer to hardware structure | |
2306 | * | |
2307 | * Enable flow control according on 1 gig fiber. | |
2308 | **/ | |
2309 | static s32 ixgbe_fc_autoneg_fiber(struct ixgbe_hw *hw) | |
2310 | { | |
2311 | u32 pcs_anadv_reg, pcs_lpab_reg, linkstat; | |
e90dd264 | 2312 | s32 ret_val; |
539e5f02 PWJ |
2313 | |
2314 | /* | |
2315 | * On multispeed fiber at 1g, bail out if | |
2316 | * - link is up but AN did not complete, or if | |
2317 | * - link is up and AN completed but timed out | |
2318 | */ | |
0b0c2b31 ET |
2319 | |
2320 | linkstat = IXGBE_READ_REG(hw, IXGBE_PCS1GLSTA); | |
53f096de | 2321 | if ((!!(linkstat & IXGBE_PCS1GLSTA_AN_COMPLETE) == 0) || |
786e9a5f | 2322 | (!!(linkstat & IXGBE_PCS1GLSTA_AN_TIMED_OUT) == 1)) |
e90dd264 | 2323 | return IXGBE_ERR_FC_NOT_NEGOTIATED; |
539e5f02 | 2324 | |
0b0c2b31 ET |
2325 | pcs_anadv_reg = IXGBE_READ_REG(hw, IXGBE_PCS1GANA); |
2326 | pcs_lpab_reg = IXGBE_READ_REG(hw, IXGBE_PCS1GANLP); | |
2327 | ||
2328 | ret_val = ixgbe_negotiate_fc(hw, pcs_anadv_reg, | |
2329 | pcs_lpab_reg, IXGBE_PCS1GANA_SYM_PAUSE, | |
2330 | IXGBE_PCS1GANA_ASM_PAUSE, | |
2331 | IXGBE_PCS1GANA_SYM_PAUSE, | |
2332 | IXGBE_PCS1GANA_ASM_PAUSE); | |
2333 | ||
0b0c2b31 ET |
2334 | return ret_val; |
2335 | } | |
2336 | ||
2337 | /** | |
2338 | * ixgbe_fc_autoneg_backplane - Enable flow control IEEE clause 37 | |
2339 | * @hw: pointer to hardware structure | |
2340 | * | |
2341 | * Enable flow control according to IEEE clause 37. | |
2342 | **/ | |
2343 | static s32 ixgbe_fc_autoneg_backplane(struct ixgbe_hw *hw) | |
2344 | { | |
2345 | u32 links2, anlp1_reg, autoc_reg, links; | |
e90dd264 | 2346 | s32 ret_val; |
0b0c2b31 | 2347 | |
9bbe3a57 | 2348 | /* |
0b0c2b31 ET |
2349 | * On backplane, bail out if |
2350 | * - backplane autoneg was not completed, or if | |
2351 | * - we are 82599 and link partner is not AN enabled | |
9bbe3a57 | 2352 | */ |
0b0c2b31 | 2353 | links = IXGBE_READ_REG(hw, IXGBE_LINKS); |
786e9a5f | 2354 | if ((links & IXGBE_LINKS_KX_AN_COMP) == 0) |
e90dd264 | 2355 | return IXGBE_ERR_FC_NOT_NEGOTIATED; |
9bbe3a57 | 2356 | |
0b0c2b31 ET |
2357 | if (hw->mac.type == ixgbe_mac_82599EB) { |
2358 | links2 = IXGBE_READ_REG(hw, IXGBE_LINKS2); | |
786e9a5f | 2359 | if ((links2 & IXGBE_LINKS2_AN_SUPPORTED) == 0) |
e90dd264 | 2360 | return IXGBE_ERR_FC_NOT_NEGOTIATED; |
0b0c2b31 | 2361 | } |
0ecc061d | 2362 | /* |
0b0c2b31 | 2363 | * Read the 10g AN autoc and LP ability registers and resolve |
0ecc061d PWJ |
2364 | * local flow control settings accordingly |
2365 | */ | |
0b0c2b31 ET |
2366 | autoc_reg = IXGBE_READ_REG(hw, IXGBE_AUTOC); |
2367 | anlp1_reg = IXGBE_READ_REG(hw, IXGBE_ANLP1); | |
539e5f02 | 2368 | |
0b0c2b31 ET |
2369 | ret_val = ixgbe_negotiate_fc(hw, autoc_reg, |
2370 | anlp1_reg, IXGBE_AUTOC_SYM_PAUSE, IXGBE_AUTOC_ASM_PAUSE, | |
2371 | IXGBE_ANLP1_SYM_PAUSE, IXGBE_ANLP1_ASM_PAUSE); | |
2372 | ||
0b0c2b31 ET |
2373 | return ret_val; |
2374 | } | |
2375 | ||
2376 | /** | |
2377 | * ixgbe_fc_autoneg_copper - Enable flow control IEEE clause 37 | |
2378 | * @hw: pointer to hardware structure | |
2379 | * | |
2380 | * Enable flow control according to IEEE clause 37. | |
2381 | **/ | |
2382 | static s32 ixgbe_fc_autoneg_copper(struct ixgbe_hw *hw) | |
2383 | { | |
2384 | u16 technology_ability_reg = 0; | |
2385 | u16 lp_technology_ability_reg = 0; | |
2386 | ||
2387 | hw->phy.ops.read_reg(hw, MDIO_AN_ADVERTISE, | |
2388 | MDIO_MMD_AN, | |
2389 | &technology_ability_reg); | |
2390 | hw->phy.ops.read_reg(hw, MDIO_AN_LPA, | |
2391 | MDIO_MMD_AN, | |
2392 | &lp_technology_ability_reg); | |
2393 | ||
2394 | return ixgbe_negotiate_fc(hw, (u32)technology_ability_reg, | |
2395 | (u32)lp_technology_ability_reg, | |
2396 | IXGBE_TAF_SYM_PAUSE, IXGBE_TAF_ASM_PAUSE, | |
2397 | IXGBE_TAF_SYM_PAUSE, IXGBE_TAF_ASM_PAUSE); | |
2398 | } | |
2399 | ||
2400 | /** | |
67a79df2 | 2401 | * ixgbe_fc_autoneg - Configure flow control |
11afc1b1 PW |
2402 | * @hw: pointer to hardware structure |
2403 | * | |
67a79df2 AD |
2404 | * Compares our advertised flow control capabilities to those advertised by |
2405 | * our link partner, and determines the proper flow control mode to use. | |
11afc1b1 | 2406 | **/ |
67a79df2 | 2407 | void ixgbe_fc_autoneg(struct ixgbe_hw *hw) |
11afc1b1 | 2408 | { |
67a79df2 AD |
2409 | s32 ret_val = IXGBE_ERR_FC_NOT_NEGOTIATED; |
2410 | ixgbe_link_speed speed; | |
2411 | bool link_up; | |
11afc1b1 PW |
2412 | |
2413 | /* | |
67a79df2 AD |
2414 | * AN should have completed when the cable was plugged in. |
2415 | * Look for reasons to bail out. Bail out if: | |
2416 | * - FC autoneg is disabled, or if | |
2417 | * - link is not up. | |
2418 | * | |
2419 | * Since we're being called from an LSC, link is already known to be up. | |
2420 | * So use link_up_wait_to_complete=false. | |
11afc1b1 | 2421 | */ |
67a79df2 | 2422 | if (hw->fc.disable_fc_autoneg) |
620fa036 | 2423 | goto out; |
11afc1b1 | 2424 | |
67a79df2 AD |
2425 | hw->mac.ops.check_link(hw, &speed, &link_up, false); |
2426 | if (!link_up) | |
11afc1b1 | 2427 | goto out; |
0b0c2b31 ET |
2428 | |
2429 | switch (hw->phy.media_type) { | |
67a79df2 | 2430 | /* Autoneg flow control on fiber adapters */ |
0b0c2b31 | 2431 | case ixgbe_media_type_fiber: |
67a79df2 AD |
2432 | if (speed == IXGBE_LINK_SPEED_1GB_FULL) |
2433 | ret_val = ixgbe_fc_autoneg_fiber(hw); | |
2434 | break; | |
2435 | ||
2436 | /* Autoneg flow control on backplane adapters */ | |
0b0c2b31 | 2437 | case ixgbe_media_type_backplane: |
67a79df2 | 2438 | ret_val = ixgbe_fc_autoneg_backplane(hw); |
0b0c2b31 ET |
2439 | break; |
2440 | ||
67a79df2 | 2441 | /* Autoneg flow control on copper adapters */ |
0b0c2b31 | 2442 | case ixgbe_media_type_copper: |
73d80953 | 2443 | if (ixgbe_device_supports_autoneg_fc(hw)) |
67a79df2 | 2444 | ret_val = ixgbe_fc_autoneg_copper(hw); |
0b0c2b31 ET |
2445 | break; |
2446 | ||
2447 | default: | |
620fa036 | 2448 | break; |
0b0c2b31 | 2449 | } |
539e5f02 | 2450 | |
11afc1b1 | 2451 | out: |
67a79df2 AD |
2452 | if (ret_val == 0) { |
2453 | hw->fc.fc_was_autonegged = true; | |
2454 | } else { | |
2455 | hw->fc.fc_was_autonegged = false; | |
2456 | hw->fc.current_mode = hw->fc.requested_mode; | |
2457 | } | |
11afc1b1 PW |
2458 | } |
2459 | ||
1f86c983 DS |
2460 | /** |
2461 | * ixgbe_pcie_timeout_poll - Return number of times to poll for completion | |
2462 | * @hw: pointer to hardware structure | |
2463 | * | |
2464 | * System-wide timeout range is encoded in PCIe Device Control2 register. | |
2465 | * | |
2466 | * Add 10% to specified maximum and return the number of times to poll for | |
2467 | * completion timeout, in units of 100 microsec. Never return less than | |
2468 | * 800 = 80 millisec. | |
2469 | **/ | |
2470 | static u32 ixgbe_pcie_timeout_poll(struct ixgbe_hw *hw) | |
2471 | { | |
1f86c983 DS |
2472 | s16 devctl2; |
2473 | u32 pollcnt; | |
2474 | ||
0d7c6e00 | 2475 | devctl2 = ixgbe_read_pci_cfg_word(hw, IXGBE_PCI_DEVICE_CONTROL2); |
1f86c983 DS |
2476 | devctl2 &= IXGBE_PCIDEVCTRL2_TIMEO_MASK; |
2477 | ||
2478 | switch (devctl2) { | |
2479 | case IXGBE_PCIDEVCTRL2_65_130ms: | |
2480 | pollcnt = 1300; /* 130 millisec */ | |
2481 | break; | |
2482 | case IXGBE_PCIDEVCTRL2_260_520ms: | |
2483 | pollcnt = 5200; /* 520 millisec */ | |
2484 | break; | |
2485 | case IXGBE_PCIDEVCTRL2_1_2s: | |
2486 | pollcnt = 20000; /* 2 sec */ | |
2487 | break; | |
2488 | case IXGBE_PCIDEVCTRL2_4_8s: | |
2489 | pollcnt = 80000; /* 8 sec */ | |
2490 | break; | |
2491 | case IXGBE_PCIDEVCTRL2_17_34s: | |
2492 | pollcnt = 34000; /* 34 sec */ | |
2493 | break; | |
2494 | case IXGBE_PCIDEVCTRL2_50_100us: /* 100 microsecs */ | |
2495 | case IXGBE_PCIDEVCTRL2_1_2ms: /* 2 millisecs */ | |
2496 | case IXGBE_PCIDEVCTRL2_16_32ms: /* 32 millisec */ | |
2497 | case IXGBE_PCIDEVCTRL2_16_32ms_def: /* 32 millisec default */ | |
2498 | default: | |
2499 | pollcnt = 800; /* 80 millisec minimum */ | |
2500 | break; | |
2501 | } | |
2502 | ||
2503 | /* add 10% to spec maximum */ | |
2504 | return (pollcnt * 11) / 10; | |
2505 | } | |
2506 | ||
9a799d71 AK |
2507 | /** |
2508 | * ixgbe_disable_pcie_master - Disable PCI-express master access | |
2509 | * @hw: pointer to hardware structure | |
2510 | * | |
2511 | * Disables PCI-Express master access and verifies there are no pending | |
2512 | * requests. IXGBE_ERR_MASTER_REQUESTS_PENDING is returned if master disable | |
2513 | * bit hasn't caused the master requests to be disabled, else 0 | |
2514 | * is returned signifying master requests disabled. | |
2515 | **/ | |
ff9d1a5a | 2516 | static s32 ixgbe_disable_pcie_master(struct ixgbe_hw *hw) |
9a799d71 | 2517 | { |
1f86c983 | 2518 | u32 i, poll; |
ff9d1a5a ET |
2519 | u16 value; |
2520 | ||
2521 | /* Always set this bit to ensure any future transactions are blocked */ | |
2522 | IXGBE_WRITE_REG(hw, IXGBE_CTRL, IXGBE_CTRL_GIO_DIS); | |
a4297dc2 | 2523 | |
48b44612 MR |
2524 | /* Poll for bit to read as set */ |
2525 | for (i = 0; i < IXGBE_PCI_MASTER_DISABLE_TIMEOUT; i++) { | |
2526 | if (IXGBE_READ_REG(hw, IXGBE_CTRL) & IXGBE_CTRL_GIO_DIS) | |
2527 | break; | |
2528 | usleep_range(100, 120); | |
2529 | } | |
2530 | if (i >= IXGBE_PCI_MASTER_DISABLE_TIMEOUT) { | |
2531 | hw_dbg(hw, "GIO disable did not set - requesting resets\n"); | |
2532 | goto gio_disable_fail; | |
2533 | } | |
2534 | ||
ff9d1a5a | 2535 | /* Exit if master requests are blocked */ |
14438464 MR |
2536 | if (!(IXGBE_READ_REG(hw, IXGBE_STATUS) & IXGBE_STATUS_GIO) || |
2537 | ixgbe_removed(hw->hw_addr)) | |
e90dd264 | 2538 | return 0; |
9a799d71 | 2539 | |
ff9d1a5a | 2540 | /* Poll for master request bit to clear */ |
9a799d71 | 2541 | for (i = 0; i < IXGBE_PCI_MASTER_DISABLE_TIMEOUT; i++) { |
a4297dc2 | 2542 | udelay(100); |
ff9d1a5a | 2543 | if (!(IXGBE_READ_REG(hw, IXGBE_STATUS) & IXGBE_STATUS_GIO)) |
e90dd264 | 2544 | return 0; |
a4297dc2 ET |
2545 | } |
2546 | ||
ff9d1a5a ET |
2547 | /* |
2548 | * Two consecutive resets are required via CTRL.RST per datasheet | |
2549 | * 5.2.5.3.2 Master Disable. We set a flag to inform the reset routine | |
2550 | * of this need. The first reset prevents new master requests from | |
2551 | * being issued by our device. We then must wait 1usec or more for any | |
2552 | * remaining completions from the PCIe bus to trickle in, and then reset | |
2553 | * again to clear out any effects they may have had on our device. | |
2554 | */ | |
a4297dc2 | 2555 | hw_dbg(hw, "GIO Master Disable bit didn't clear - requesting resets\n"); |
48b44612 | 2556 | gio_disable_fail: |
ff9d1a5a | 2557 | hw->mac.flags |= IXGBE_FLAGS_DOUBLE_RESET_REQUIRED; |
a4297dc2 | 2558 | |
7fc15103 MR |
2559 | if (hw->mac.type >= ixgbe_mac_X550) |
2560 | return 0; | |
2561 | ||
a4297dc2 ET |
2562 | /* |
2563 | * Before proceeding, make sure that the PCIe block does not have | |
2564 | * transactions pending. | |
2565 | */ | |
1f86c983 DS |
2566 | poll = ixgbe_pcie_timeout_poll(hw); |
2567 | for (i = 0; i < poll; i++) { | |
9a799d71 | 2568 | udelay(100); |
14438464 MR |
2569 | value = ixgbe_read_pci_cfg_word(hw, IXGBE_PCI_DEVICE_STATUS); |
2570 | if (ixgbe_removed(hw->hw_addr)) | |
e90dd264 | 2571 | return 0; |
ff9d1a5a | 2572 | if (!(value & IXGBE_PCI_DEVICE_STATUS_TRANSACTION_PENDING)) |
e90dd264 | 2573 | return 0; |
9a799d71 AK |
2574 | } |
2575 | ||
ff9d1a5a | 2576 | hw_dbg(hw, "PCIe transaction pending bit also did not clear.\n"); |
e90dd264 | 2577 | return IXGBE_ERR_MASTER_REQUESTS_PENDING; |
9a799d71 AK |
2578 | } |
2579 | ||
9a799d71 | 2580 | /** |
c44ade9e | 2581 | * ixgbe_acquire_swfw_sync - Acquire SWFW semaphore |
9a799d71 | 2582 | * @hw: pointer to hardware structure |
c44ade9e | 2583 | * @mask: Mask to specify which semaphore to acquire |
9a799d71 | 2584 | * |
da74cd4a | 2585 | * Acquires the SWFW semaphore through the GSSR register for the specified |
9a799d71 AK |
2586 | * function (CSR, PHY0, PHY1, EEPROM, Flash) |
2587 | **/ | |
030eaece | 2588 | s32 ixgbe_acquire_swfw_sync(struct ixgbe_hw *hw, u32 mask) |
9a799d71 | 2589 | { |
674c18b2 | 2590 | u32 gssr = 0; |
9a799d71 AK |
2591 | u32 swmask = mask; |
2592 | u32 fwmask = mask << 5; | |
674c18b2 ET |
2593 | u32 timeout = 200; |
2594 | u32 i; | |
9a799d71 | 2595 | |
674c18b2 | 2596 | for (i = 0; i < timeout; i++) { |
dbf893ee | 2597 | /* |
674c18b2 ET |
2598 | * SW NVM semaphore bit is used for access to all |
2599 | * SW_FW_SYNC bits (not just NVM) | |
dbf893ee | 2600 | */ |
9a799d71 | 2601 | if (ixgbe_get_eeprom_semaphore(hw)) |
539e5f02 | 2602 | return IXGBE_ERR_SWFW_SYNC; |
9a799d71 AK |
2603 | |
2604 | gssr = IXGBE_READ_REG(hw, IXGBE_GSSR); | |
674c18b2 ET |
2605 | if (!(gssr & (fwmask | swmask))) { |
2606 | gssr |= swmask; | |
2607 | IXGBE_WRITE_REG(hw, IXGBE_GSSR, gssr); | |
2608 | ixgbe_release_eeprom_semaphore(hw); | |
2609 | return 0; | |
2610 | } else { | |
2611 | /* Resource is currently in use by FW or SW */ | |
2612 | ixgbe_release_eeprom_semaphore(hw); | |
2613 | usleep_range(5000, 10000); | |
2614 | } | |
9a799d71 AK |
2615 | } |
2616 | ||
674c18b2 ET |
2617 | /* If time expired clear the bits holding the lock and retry */ |
2618 | if (gssr & (fwmask | swmask)) | |
2619 | ixgbe_release_swfw_sync(hw, gssr & (fwmask | swmask)); | |
9a799d71 | 2620 | |
674c18b2 ET |
2621 | usleep_range(5000, 10000); |
2622 | return IXGBE_ERR_SWFW_SYNC; | |
9a799d71 AK |
2623 | } |
2624 | ||
2625 | /** | |
2626 | * ixgbe_release_swfw_sync - Release SWFW semaphore | |
2627 | * @hw: pointer to hardware structure | |
c44ade9e | 2628 | * @mask: Mask to specify which semaphore to release |
9a799d71 | 2629 | * |
da74cd4a | 2630 | * Releases the SWFW semaphore through the GSSR register for the specified |
9a799d71 AK |
2631 | * function (CSR, PHY0, PHY1, EEPROM, Flash) |
2632 | **/ | |
030eaece | 2633 | void ixgbe_release_swfw_sync(struct ixgbe_hw *hw, u32 mask) |
9a799d71 AK |
2634 | { |
2635 | u32 gssr; | |
2636 | u32 swmask = mask; | |
2637 | ||
2638 | ixgbe_get_eeprom_semaphore(hw); | |
2639 | ||
2640 | gssr = IXGBE_READ_REG(hw, IXGBE_GSSR); | |
2641 | gssr &= ~swmask; | |
2642 | IXGBE_WRITE_REG(hw, IXGBE_GSSR, gssr); | |
2643 | ||
2644 | ixgbe_release_eeprom_semaphore(hw); | |
2645 | } | |
2646 | ||
429d6a3b DS |
2647 | /** |
2648 | * prot_autoc_read_generic - Hides MAC differences needed for AUTOC read | |
2649 | * @hw: pointer to hardware structure | |
2650 | * @reg_val: Value we read from AUTOC | |
2651 | * @locked: bool to indicate whether the SW/FW lock should be taken. Never | |
2652 | * true in this the generic case. | |
2653 | * | |
2654 | * The default case requires no protection so just to the register read. | |
2655 | **/ | |
2656 | s32 prot_autoc_read_generic(struct ixgbe_hw *hw, bool *locked, u32 *reg_val) | |
2657 | { | |
2658 | *locked = false; | |
2659 | *reg_val = IXGBE_READ_REG(hw, IXGBE_AUTOC); | |
2660 | return 0; | |
2661 | } | |
2662 | ||
2663 | /** | |
2664 | * prot_autoc_write_generic - Hides MAC differences needed for AUTOC write | |
2665 | * @hw: pointer to hardware structure | |
2666 | * @reg_val: value to write to AUTOC | |
2667 | * @locked: bool to indicate whether the SW/FW lock was already taken by | |
2668 | * previous read. | |
2669 | **/ | |
2670 | s32 prot_autoc_write_generic(struct ixgbe_hw *hw, u32 reg_val, bool locked) | |
2671 | { | |
2672 | IXGBE_WRITE_REG(hw, IXGBE_AUTOC, reg_val); | |
2673 | return 0; | |
2674 | } | |
2675 | ||
d2f5e7f3 AS |
2676 | /** |
2677 | * ixgbe_disable_rx_buff_generic - Stops the receive data path | |
2678 | * @hw: pointer to hardware structure | |
2679 | * | |
2680 | * Stops the receive data path and waits for the HW to internally | |
2681 | * empty the Rx security block. | |
2682 | **/ | |
2683 | s32 ixgbe_disable_rx_buff_generic(struct ixgbe_hw *hw) | |
2684 | { | |
2685 | #define IXGBE_MAX_SECRX_POLL 40 | |
2686 | int i; | |
2687 | int secrxreg; | |
2688 | ||
2689 | secrxreg = IXGBE_READ_REG(hw, IXGBE_SECRXCTRL); | |
2690 | secrxreg |= IXGBE_SECRXCTRL_RX_DIS; | |
2691 | IXGBE_WRITE_REG(hw, IXGBE_SECRXCTRL, secrxreg); | |
2692 | for (i = 0; i < IXGBE_MAX_SECRX_POLL; i++) { | |
2693 | secrxreg = IXGBE_READ_REG(hw, IXGBE_SECRXSTAT); | |
2694 | if (secrxreg & IXGBE_SECRXSTAT_SECRX_RDY) | |
2695 | break; | |
2696 | else | |
2697 | /* Use interrupt-safe sleep just in case */ | |
db76ad47 | 2698 | udelay(1000); |
d2f5e7f3 AS |
2699 | } |
2700 | ||
2701 | /* For informational purposes only */ | |
2702 | if (i >= IXGBE_MAX_SECRX_POLL) | |
6ec1b71f | 2703 | hw_dbg(hw, "Rx unit being enabled before security path fully disabled. Continuing with init.\n"); |
d2f5e7f3 AS |
2704 | |
2705 | return 0; | |
2706 | ||
2707 | } | |
2708 | ||
2709 | /** | |
2710 | * ixgbe_enable_rx_buff - Enables the receive data path | |
2711 | * @hw: pointer to hardware structure | |
2712 | * | |
2713 | * Enables the receive data path | |
2714 | **/ | |
2715 | s32 ixgbe_enable_rx_buff_generic(struct ixgbe_hw *hw) | |
2716 | { | |
310ea123 | 2717 | u32 secrxreg; |
d2f5e7f3 AS |
2718 | |
2719 | secrxreg = IXGBE_READ_REG(hw, IXGBE_SECRXCTRL); | |
2720 | secrxreg &= ~IXGBE_SECRXCTRL_RX_DIS; | |
2721 | IXGBE_WRITE_REG(hw, IXGBE_SECRXCTRL, secrxreg); | |
2722 | IXGBE_WRITE_FLUSH(hw); | |
2723 | ||
2724 | return 0; | |
2725 | } | |
2726 | ||
11afc1b1 PW |
2727 | /** |
2728 | * ixgbe_enable_rx_dma_generic - Enable the Rx DMA unit | |
2729 | * @hw: pointer to hardware structure | |
2730 | * @regval: register value to write to RXCTRL | |
2731 | * | |
2732 | * Enables the Rx DMA unit | |
2733 | **/ | |
2734 | s32 ixgbe_enable_rx_dma_generic(struct ixgbe_hw *hw, u32 regval) | |
2735 | { | |
1f9ac57c DS |
2736 | if (regval & IXGBE_RXCTRL_RXEN) |
2737 | hw->mac.ops.enable_rx(hw); | |
2738 | else | |
2739 | hw->mac.ops.disable_rx(hw); | |
11afc1b1 PW |
2740 | |
2741 | return 0; | |
2742 | } | |
87c12017 PW |
2743 | |
2744 | /** | |
2745 | * ixgbe_blink_led_start_generic - Blink LED based on index. | |
2746 | * @hw: pointer to hardware structure | |
2747 | * @index: led number to blink | |
2748 | **/ | |
2749 | s32 ixgbe_blink_led_start_generic(struct ixgbe_hw *hw, u32 index) | |
2750 | { | |
2751 | ixgbe_link_speed speed = 0; | |
3db1cd5c | 2752 | bool link_up = false; |
87c12017 PW |
2753 | u32 autoc_reg = IXGBE_READ_REG(hw, IXGBE_AUTOC); |
2754 | u32 led_reg = IXGBE_READ_REG(hw, IXGBE_LEDCTL); | |
429d6a3b | 2755 | bool locked = false; |
e90dd264 | 2756 | s32 ret_val; |
87c12017 | 2757 | |
003287e0 DS |
2758 | if (index > 3) |
2759 | return IXGBE_ERR_PARAM; | |
2760 | ||
87c12017 PW |
2761 | /* |
2762 | * Link must be up to auto-blink the LEDs; | |
2763 | * Force it if link is down. | |
2764 | */ | |
2765 | hw->mac.ops.check_link(hw, &speed, &link_up, false); | |
2766 | ||
2767 | if (!link_up) { | |
429d6a3b | 2768 | ret_val = hw->mac.ops.prot_autoc_read(hw, &locked, &autoc_reg); |
f8cf7a00 | 2769 | if (ret_val) |
e90dd264 | 2770 | return ret_val; |
d7bbcd32 | 2771 | |
50ac58ba | 2772 | autoc_reg |= IXGBE_AUTOC_AN_RESTART; |
87c12017 | 2773 | autoc_reg |= IXGBE_AUTOC_FLU; |
429d6a3b DS |
2774 | |
2775 | ret_val = hw->mac.ops.prot_autoc_write(hw, autoc_reg, locked); | |
f8cf7a00 | 2776 | if (ret_val) |
e90dd264 | 2777 | return ret_val; |
429d6a3b | 2778 | |
945a5151 | 2779 | IXGBE_WRITE_FLUSH(hw); |
d7bbcd32 | 2780 | |
032b4325 | 2781 | usleep_range(10000, 20000); |
87c12017 PW |
2782 | } |
2783 | ||
2784 | led_reg &= ~IXGBE_LED_MODE_MASK(index); | |
2785 | led_reg |= IXGBE_LED_BLINK(index); | |
2786 | IXGBE_WRITE_REG(hw, IXGBE_LEDCTL, led_reg); | |
2787 | IXGBE_WRITE_FLUSH(hw); | |
2788 | ||
e90dd264 | 2789 | return 0; |
87c12017 PW |
2790 | } |
2791 | ||
2792 | /** | |
2793 | * ixgbe_blink_led_stop_generic - Stop blinking LED based on index. | |
2794 | * @hw: pointer to hardware structure | |
2795 | * @index: led number to stop blinking | |
2796 | **/ | |
2797 | s32 ixgbe_blink_led_stop_generic(struct ixgbe_hw *hw, u32 index) | |
2798 | { | |
429d6a3b | 2799 | u32 autoc_reg = 0; |
87c12017 | 2800 | u32 led_reg = IXGBE_READ_REG(hw, IXGBE_LEDCTL); |
429d6a3b | 2801 | bool locked = false; |
e90dd264 | 2802 | s32 ret_val; |
d7bbcd32 | 2803 | |
003287e0 DS |
2804 | if (index > 3) |
2805 | return IXGBE_ERR_PARAM; | |
2806 | ||
429d6a3b | 2807 | ret_val = hw->mac.ops.prot_autoc_read(hw, &locked, &autoc_reg); |
f8cf7a00 | 2808 | if (ret_val) |
e90dd264 | 2809 | return ret_val; |
87c12017 PW |
2810 | |
2811 | autoc_reg &= ~IXGBE_AUTOC_FLU; | |
2812 | autoc_reg |= IXGBE_AUTOC_AN_RESTART; | |
87c12017 | 2813 | |
429d6a3b | 2814 | ret_val = hw->mac.ops.prot_autoc_write(hw, autoc_reg, locked); |
f8cf7a00 | 2815 | if (ret_val) |
e90dd264 | 2816 | return ret_val; |
d7bbcd32 | 2817 | |
87c12017 PW |
2818 | led_reg &= ~IXGBE_LED_MODE_MASK(index); |
2819 | led_reg &= ~IXGBE_LED_BLINK(index); | |
2820 | led_reg |= IXGBE_LED_LINK_ACTIVE << IXGBE_LED_MODE_SHIFT(index); | |
2821 | IXGBE_WRITE_REG(hw, IXGBE_LEDCTL, led_reg); | |
2822 | IXGBE_WRITE_FLUSH(hw); | |
2823 | ||
e90dd264 | 2824 | return 0; |
87c12017 | 2825 | } |
21ce849b MC |
2826 | |
2827 | /** | |
2828 | * ixgbe_get_san_mac_addr_offset - Get SAN MAC address offset from the EEPROM | |
2829 | * @hw: pointer to hardware structure | |
2830 | * @san_mac_offset: SAN MAC address offset | |
2831 | * | |
2832 | * This function will read the EEPROM location for the SAN MAC address | |
2833 | * pointer, and returns the value at that location. This is used in both | |
2834 | * get and set mac_addr routines. | |
2835 | **/ | |
2836 | static s32 ixgbe_get_san_mac_addr_offset(struct ixgbe_hw *hw, | |
e7cf745b | 2837 | u16 *san_mac_offset) |
21ce849b | 2838 | { |
be0c27b4 MR |
2839 | s32 ret_val; |
2840 | ||
21ce849b MC |
2841 | /* |
2842 | * First read the EEPROM pointer to see if the MAC addresses are | |
2843 | * available. | |
2844 | */ | |
be0c27b4 MR |
2845 | ret_val = hw->eeprom.ops.read(hw, IXGBE_SAN_MAC_ADDR_PTR, |
2846 | san_mac_offset); | |
2847 | if (ret_val) | |
2848 | hw_err(hw, "eeprom read at offset %d failed\n", | |
2849 | IXGBE_SAN_MAC_ADDR_PTR); | |
21ce849b | 2850 | |
be0c27b4 | 2851 | return ret_val; |
21ce849b MC |
2852 | } |
2853 | ||
2854 | /** | |
2855 | * ixgbe_get_san_mac_addr_generic - SAN MAC address retrieval from the EEPROM | |
2856 | * @hw: pointer to hardware structure | |
2857 | * @san_mac_addr: SAN MAC address | |
2858 | * | |
2859 | * Reads the SAN MAC address from the EEPROM, if it's available. This is | |
2860 | * per-port, so set_lan_id() must be called before reading the addresses. | |
2861 | * set_lan_id() is called by identify_sfp(), but this cannot be relied | |
2862 | * upon for non-SFP connections, so we must call it here. | |
2863 | **/ | |
2864 | s32 ixgbe_get_san_mac_addr_generic(struct ixgbe_hw *hw, u8 *san_mac_addr) | |
2865 | { | |
2866 | u16 san_mac_data, san_mac_offset; | |
2867 | u8 i; | |
be0c27b4 | 2868 | s32 ret_val; |
21ce849b MC |
2869 | |
2870 | /* | |
2871 | * First read the EEPROM pointer to see if the MAC addresses are | |
2872 | * available. If they're not, no point in calling set_lan_id() here. | |
2873 | */ | |
be0c27b4 MR |
2874 | ret_val = ixgbe_get_san_mac_addr_offset(hw, &san_mac_offset); |
2875 | if (ret_val || san_mac_offset == 0 || san_mac_offset == 0xFFFF) | |
21ce849b | 2876 | |
be0c27b4 | 2877 | goto san_mac_addr_clr; |
21ce849b MC |
2878 | |
2879 | /* make sure we know which port we need to program */ | |
2880 | hw->mac.ops.set_lan_id(hw); | |
2881 | /* apply the port offset to the address offset */ | |
2882 | (hw->bus.func) ? (san_mac_offset += IXGBE_SAN_MAC_ADDR_PORT1_OFFSET) : | |
e7cf745b | 2883 | (san_mac_offset += IXGBE_SAN_MAC_ADDR_PORT0_OFFSET); |
21ce849b | 2884 | for (i = 0; i < 3; i++) { |
be0c27b4 MR |
2885 | ret_val = hw->eeprom.ops.read(hw, san_mac_offset, |
2886 | &san_mac_data); | |
2887 | if (ret_val) { | |
2888 | hw_err(hw, "eeprom read at offset %d failed\n", | |
2889 | san_mac_offset); | |
2890 | goto san_mac_addr_clr; | |
2891 | } | |
21ce849b MC |
2892 | san_mac_addr[i * 2] = (u8)(san_mac_data); |
2893 | san_mac_addr[i * 2 + 1] = (u8)(san_mac_data >> 8); | |
2894 | san_mac_offset++; | |
2895 | } | |
21ce849b | 2896 | return 0; |
be0c27b4 MR |
2897 | |
2898 | san_mac_addr_clr: | |
2899 | /* No addresses available in this EEPROM. It's not necessarily an | |
2900 | * error though, so just wipe the local address and return. | |
2901 | */ | |
2902 | for (i = 0; i < 6; i++) | |
2903 | san_mac_addr[i] = 0xFF; | |
2904 | return ret_val; | |
21ce849b MC |
2905 | } |
2906 | ||
2907 | /** | |
2908 | * ixgbe_get_pcie_msix_count_generic - Gets MSI-X vector count | |
2909 | * @hw: pointer to hardware structure | |
2910 | * | |
2911 | * Read PCIe configuration space, and get the MSI-X vector count from | |
2912 | * the capabilities table. | |
2913 | **/ | |
71161302 | 2914 | u16 ixgbe_get_pcie_msix_count_generic(struct ixgbe_hw *hw) |
21ce849b | 2915 | { |
e90dd264 | 2916 | u16 msix_count; |
71161302 ET |
2917 | u16 max_msix_count; |
2918 | u16 pcie_offset; | |
2919 | ||
2920 | switch (hw->mac.type) { | |
2921 | case ixgbe_mac_82598EB: | |
2922 | pcie_offset = IXGBE_PCIE_MSIX_82598_CAPS; | |
2923 | max_msix_count = IXGBE_MAX_MSIX_VECTORS_82598; | |
2924 | break; | |
2925 | case ixgbe_mac_82599EB: | |
2926 | case ixgbe_mac_X540: | |
9a75a1ac DS |
2927 | case ixgbe_mac_X550: |
2928 | case ixgbe_mac_X550EM_x: | |
49425dfc | 2929 | case ixgbe_mac_x550em_a: |
71161302 ET |
2930 | pcie_offset = IXGBE_PCIE_MSIX_82599_CAPS; |
2931 | max_msix_count = IXGBE_MAX_MSIX_VECTORS_82599; | |
2932 | break; | |
2933 | default: | |
e90dd264 | 2934 | return 1; |
71161302 ET |
2935 | } |
2936 | ||
14438464 MR |
2937 | msix_count = ixgbe_read_pci_cfg_word(hw, pcie_offset); |
2938 | if (ixgbe_removed(hw->hw_addr)) | |
2939 | msix_count = 0; | |
21ce849b MC |
2940 | msix_count &= IXGBE_PCIE_MSIX_TBL_SZ_MASK; |
2941 | ||
71161302 | 2942 | /* MSI-X count is zero-based in HW */ |
21ce849b MC |
2943 | msix_count++; |
2944 | ||
71161302 ET |
2945 | if (msix_count > max_msix_count) |
2946 | msix_count = max_msix_count; | |
2947 | ||
21ce849b MC |
2948 | return msix_count; |
2949 | } | |
2950 | ||
2951 | /** | |
2952 | * ixgbe_clear_vmdq_generic - Disassociate a VMDq pool index from a rx address | |
2953 | * @hw: pointer to hardware struct | |
2954 | * @rar: receive address register index to disassociate | |
2955 | * @vmdq: VMDq pool index to remove from the rar | |
2956 | **/ | |
2957 | s32 ixgbe_clear_vmdq_generic(struct ixgbe_hw *hw, u32 rar, u32 vmdq) | |
2958 | { | |
2959 | u32 mpsar_lo, mpsar_hi; | |
2960 | u32 rar_entries = hw->mac.num_rar_entries; | |
2961 | ||
c700f4e6 ET |
2962 | /* Make sure we are using a valid rar index range */ |
2963 | if (rar >= rar_entries) { | |
2964 | hw_dbg(hw, "RAR index %d is out of range.\n", rar); | |
2965 | return IXGBE_ERR_INVALID_ARGUMENT; | |
2966 | } | |
21ce849b | 2967 | |
c700f4e6 ET |
2968 | mpsar_lo = IXGBE_READ_REG(hw, IXGBE_MPSAR_LO(rar)); |
2969 | mpsar_hi = IXGBE_READ_REG(hw, IXGBE_MPSAR_HI(rar)); | |
21ce849b | 2970 | |
19458bd4 | 2971 | if (ixgbe_removed(hw->hw_addr)) |
e90dd264 | 2972 | return 0; |
19458bd4 | 2973 | |
c700f4e6 | 2974 | if (!mpsar_lo && !mpsar_hi) |
e90dd264 | 2975 | return 0; |
21ce849b | 2976 | |
c700f4e6 ET |
2977 | if (vmdq == IXGBE_CLEAR_VMDQ_ALL) { |
2978 | if (mpsar_lo) { | |
2979 | IXGBE_WRITE_REG(hw, IXGBE_MPSAR_LO(rar), 0); | |
2980 | mpsar_lo = 0; | |
2981 | } | |
2982 | if (mpsar_hi) { | |
2983 | IXGBE_WRITE_REG(hw, IXGBE_MPSAR_HI(rar), 0); | |
2984 | mpsar_hi = 0; | |
2985 | } | |
2986 | } else if (vmdq < 32) { | |
b4f47a48 | 2987 | mpsar_lo &= ~BIT(vmdq); |
c700f4e6 | 2988 | IXGBE_WRITE_REG(hw, IXGBE_MPSAR_LO(rar), mpsar_lo); |
21ce849b | 2989 | } else { |
b4f47a48 | 2990 | mpsar_hi &= ~BIT(vmdq - 32); |
c700f4e6 | 2991 | IXGBE_WRITE_REG(hw, IXGBE_MPSAR_HI(rar), mpsar_hi); |
21ce849b MC |
2992 | } |
2993 | ||
c700f4e6 | 2994 | /* was that the last pool using this rar? */ |
c10ac75a AD |
2995 | if (mpsar_lo == 0 && mpsar_hi == 0 && |
2996 | rar != 0 && rar != hw->mac.san_mac_rar_index) | |
c700f4e6 | 2997 | hw->mac.ops.clear_rar(hw, rar); |
c10ac75a | 2998 | |
21ce849b MC |
2999 | return 0; |
3000 | } | |
3001 | ||
3002 | /** | |
3003 | * ixgbe_set_vmdq_generic - Associate a VMDq pool index with a rx address | |
3004 | * @hw: pointer to hardware struct | |
3005 | * @rar: receive address register index to associate with a VMDq index | |
3006 | * @vmdq: VMDq pool index | |
3007 | **/ | |
3008 | s32 ixgbe_set_vmdq_generic(struct ixgbe_hw *hw, u32 rar, u32 vmdq) | |
3009 | { | |
3010 | u32 mpsar; | |
3011 | u32 rar_entries = hw->mac.num_rar_entries; | |
3012 | ||
c700f4e6 ET |
3013 | /* Make sure we are using a valid rar index range */ |
3014 | if (rar >= rar_entries) { | |
21ce849b | 3015 | hw_dbg(hw, "RAR index %d is out of range.\n", rar); |
c700f4e6 ET |
3016 | return IXGBE_ERR_INVALID_ARGUMENT; |
3017 | } | |
3018 | ||
3019 | if (vmdq < 32) { | |
3020 | mpsar = IXGBE_READ_REG(hw, IXGBE_MPSAR_LO(rar)); | |
b4f47a48 | 3021 | mpsar |= BIT(vmdq); |
c700f4e6 ET |
3022 | IXGBE_WRITE_REG(hw, IXGBE_MPSAR_LO(rar), mpsar); |
3023 | } else { | |
3024 | mpsar = IXGBE_READ_REG(hw, IXGBE_MPSAR_HI(rar)); | |
b4f47a48 | 3025 | mpsar |= BIT(vmdq - 32); |
c700f4e6 | 3026 | IXGBE_WRITE_REG(hw, IXGBE_MPSAR_HI(rar), mpsar); |
21ce849b MC |
3027 | } |
3028 | return 0; | |
3029 | } | |
3030 | ||
7fa7c9dc AD |
3031 | /** |
3032 | * This function should only be involved in the IOV mode. | |
3033 | * In IOV mode, Default pool is next pool after the number of | |
3034 | * VFs advertized and not 0. | |
3035 | * MPSAR table needs to be updated for SAN_MAC RAR [hw->mac.san_mac_rar_index] | |
3036 | * | |
3037 | * ixgbe_set_vmdq_san_mac - Associate default VMDq pool index with a rx address | |
3038 | * @hw: pointer to hardware struct | |
3039 | * @vmdq: VMDq pool index | |
3040 | **/ | |
3041 | s32 ixgbe_set_vmdq_san_mac_generic(struct ixgbe_hw *hw, u32 vmdq) | |
3042 | { | |
3043 | u32 rar = hw->mac.san_mac_rar_index; | |
3044 | ||
3045 | if (vmdq < 32) { | |
b4f47a48 | 3046 | IXGBE_WRITE_REG(hw, IXGBE_MPSAR_LO(rar), BIT(vmdq)); |
7fa7c9dc AD |
3047 | IXGBE_WRITE_REG(hw, IXGBE_MPSAR_HI(rar), 0); |
3048 | } else { | |
3049 | IXGBE_WRITE_REG(hw, IXGBE_MPSAR_LO(rar), 0); | |
b4f47a48 | 3050 | IXGBE_WRITE_REG(hw, IXGBE_MPSAR_HI(rar), BIT(vmdq - 32)); |
7fa7c9dc AD |
3051 | } |
3052 | ||
3053 | return 0; | |
3054 | } | |
3055 | ||
21ce849b MC |
3056 | /** |
3057 | * ixgbe_init_uta_tables_generic - Initialize the Unicast Table Array | |
3058 | * @hw: pointer to hardware structure | |
3059 | **/ | |
3060 | s32 ixgbe_init_uta_tables_generic(struct ixgbe_hw *hw) | |
3061 | { | |
3062 | int i; | |
3063 | ||
21ce849b MC |
3064 | for (i = 0; i < 128; i++) |
3065 | IXGBE_WRITE_REG(hw, IXGBE_UTA(i), 0); | |
3066 | ||
3067 | return 0; | |
3068 | } | |
3069 | ||
3070 | /** | |
3071 | * ixgbe_find_vlvf_slot - find the vlanid or the first empty slot | |
3072 | * @hw: pointer to hardware structure | |
3073 | * @vlan: VLAN id to write to VLAN filter | |
5ba643c6 TN |
3074 | * @vlvf_bypass: true to find vlanid only, false returns first empty slot if |
3075 | * vlanid not found | |
21ce849b MC |
3076 | * |
3077 | * return the VLVF index where this VLAN id should be placed | |
3078 | * | |
3079 | **/ | |
b6488b66 | 3080 | static s32 ixgbe_find_vlvf_slot(struct ixgbe_hw *hw, u32 vlan, bool vlvf_bypass) |
21ce849b | 3081 | { |
b6488b66 | 3082 | s32 regindex, first_empty_slot; |
c2bc9ce9 | 3083 | u32 bits; |
21ce849b MC |
3084 | |
3085 | /* short cut the special case */ | |
3086 | if (vlan == 0) | |
3087 | return 0; | |
3088 | ||
b6488b66 AD |
3089 | /* if vlvf_bypass is set we don't want to use an empty slot, we |
3090 | * will simply bypass the VLVF if there are no entries present in the | |
3091 | * VLVF that contain our VLAN | |
3092 | */ | |
3093 | first_empty_slot = vlvf_bypass ? IXGBE_ERR_NO_SPACE : 0; | |
3094 | ||
c2bc9ce9 AD |
3095 | /* add VLAN enable bit for comparison */ |
3096 | vlan |= IXGBE_VLVF_VIEN; | |
3097 | ||
3098 | /* Search for the vlan id in the VLVF entries. Save off the first empty | |
3099 | * slot found along the way. | |
3100 | * | |
3101 | * pre-decrement loop covering (IXGBE_VLVF_ENTRIES - 1) .. 1 | |
3102 | */ | |
3103 | for (regindex = IXGBE_VLVF_ENTRIES; --regindex;) { | |
21ce849b | 3104 | bits = IXGBE_READ_REG(hw, IXGBE_VLVF(regindex)); |
c2bc9ce9 AD |
3105 | if (bits == vlan) |
3106 | return regindex; | |
3107 | if (!first_empty_slot && !bits) | |
21ce849b | 3108 | first_empty_slot = regindex; |
21ce849b MC |
3109 | } |
3110 | ||
c2bc9ce9 AD |
3111 | /* If we are here then we didn't find the VLAN. Return first empty |
3112 | * slot we found during our search, else error. | |
3113 | */ | |
3114 | if (!first_empty_slot) | |
3115 | hw_dbg(hw, "No space in VLVF.\n"); | |
21ce849b | 3116 | |
c2bc9ce9 | 3117 | return first_empty_slot ? : IXGBE_ERR_NO_SPACE; |
21ce849b MC |
3118 | } |
3119 | ||
3120 | /** | |
3121 | * ixgbe_set_vfta_generic - Set VLAN filter table | |
3122 | * @hw: pointer to hardware structure | |
3123 | * @vlan: VLAN id to write to VLAN filter | |
3124 | * @vind: VMDq output index that maps queue to VLAN id in VFVFB | |
3125 | * @vlan_on: boolean flag to turn on/off VLAN in VFVF | |
b6488b66 | 3126 | * @vlvf_bypass: boolean flag indicating updating default pool is okay |
21ce849b MC |
3127 | * |
3128 | * Turn on/off specified VLAN in the VLAN filter table. | |
3129 | **/ | |
3130 | s32 ixgbe_set_vfta_generic(struct ixgbe_hw *hw, u32 vlan, u32 vind, | |
b6488b66 | 3131 | bool vlan_on, bool vlvf_bypass) |
21ce849b | 3132 | { |
5ac736a6 | 3133 | u32 regidx, vfta_delta, vfta, bits; |
63d9379a | 3134 | s32 vlvf_index; |
21ce849b | 3135 | |
5ac736a6 | 3136 | if ((vlan > 4095) || (vind > 63)) |
21ce849b MC |
3137 | return IXGBE_ERR_PARAM; |
3138 | ||
3139 | /* | |
3140 | * this is a 2 part operation - first the VFTA, then the | |
3141 | * VLVF and VLVFB if VT Mode is set | |
3142 | * We don't write the VFTA until we know the VLVF part succeeded. | |
3143 | */ | |
3144 | ||
3145 | /* Part 1 | |
3146 | * The VFTA is a bitstring made up of 128 32-bit registers | |
3147 | * that enable the particular VLAN id, much like the MTA: | |
3148 | * bits[11-5]: which register | |
3149 | * bits[4-0]: which bit in the register | |
3150 | */ | |
c18fbd5f | 3151 | regidx = vlan / 32; |
b4f47a48 | 3152 | vfta_delta = BIT(vlan % 32); |
c18fbd5f AD |
3153 | vfta = IXGBE_READ_REG(hw, IXGBE_VFTA(regidx)); |
3154 | ||
3155 | /* vfta_delta represents the difference between the current value | |
3156 | * of vfta and the value we want in the register. Since the diff | |
3157 | * is an XOR mask we can just update vfta using an XOR. | |
3158 | */ | |
3159 | vfta_delta &= vlan_on ? ~vfta : vfta; | |
3160 | vfta ^= vfta_delta; | |
21ce849b MC |
3161 | |
3162 | /* Part 2 | |
3163 | * If VT Mode is set | |
3164 | * Either vlan_on | |
3165 | * make sure the vlan is in VLVF | |
3166 | * set the vind bit in the matching VLVFB | |
3167 | * Or !vlan_on | |
3168 | * clear the pool bit and possibly the vind | |
3169 | */ | |
63d9379a AD |
3170 | if (!(IXGBE_READ_REG(hw, IXGBE_VT_CTL) & IXGBE_VT_CTL_VT_ENABLE)) |
3171 | goto vfta_update; | |
3172 | ||
b6488b66 AD |
3173 | vlvf_index = ixgbe_find_vlvf_slot(hw, vlan, vlvf_bypass); |
3174 | if (vlvf_index < 0) { | |
3175 | if (vlvf_bypass) | |
3176 | goto vfta_update; | |
63d9379a | 3177 | return vlvf_index; |
b6488b66 | 3178 | } |
63d9379a | 3179 | |
5ac736a6 AD |
3180 | bits = IXGBE_READ_REG(hw, IXGBE_VLVFB(vlvf_index * 2 + vind / 32)); |
3181 | ||
3182 | /* set the pool bit */ | |
b4f47a48 | 3183 | bits |= BIT(vind % 32); |
5ac736a6 AD |
3184 | if (vlan_on) |
3185 | goto vlvf_update; | |
3186 | ||
3187 | /* clear the pool bit */ | |
b4f47a48 | 3188 | bits ^= BIT(vind % 32); |
5ac736a6 AD |
3189 | |
3190 | if (!bits && | |
3191 | !IXGBE_READ_REG(hw, IXGBE_VLVFB(vlvf_index * 2 + 1 - vind / 32))) { | |
3192 | /* Clear VFTA first, then disable VLVF. Otherwise | |
3193 | * we run the risk of stray packets leaking into | |
3194 | * the PF via the default pool | |
3195 | */ | |
3196 | if (vfta_delta) | |
3197 | IXGBE_WRITE_REG(hw, IXGBE_VFTA(regidx), vfta); | |
3198 | ||
3199 | /* disable VLVF and clear remaining bit from pool */ | |
3200 | IXGBE_WRITE_REG(hw, IXGBE_VLVF(vlvf_index), 0); | |
3201 | IXGBE_WRITE_REG(hw, IXGBE_VLVFB(vlvf_index * 2 + vind / 32), 0); | |
3202 | ||
3203 | return 0; | |
21ce849b MC |
3204 | } |
3205 | ||
63d9379a AD |
3206 | /* If there are still bits set in the VLVFB registers |
3207 | * for the VLAN ID indicated we need to see if the | |
3208 | * caller is requesting that we clear the VFTA entry bit. | |
3209 | * If the caller has requested that we clear the VFTA | |
3210 | * entry bit but there are still pools/VFs using this VLAN | |
3211 | * ID entry then ignore the request. We're not worried | |
3212 | * about the case where we're turning the VFTA VLAN ID | |
3213 | * entry bit on, only when requested to turn it off as | |
3214 | * there may be multiple pools and/or VFs using the | |
3215 | * VLAN ID entry. In that case we cannot clear the | |
3216 | * VFTA bit until all pools/VFs using that VLAN ID have also | |
3217 | * been cleared. This will be indicated by "bits" being | |
3218 | * zero. | |
3219 | */ | |
5ac736a6 | 3220 | vfta_delta = 0; |
63d9379a | 3221 | |
5ac736a6 AD |
3222 | vlvf_update: |
3223 | /* record pool change and enable VLAN ID if not already enabled */ | |
3224 | IXGBE_WRITE_REG(hw, IXGBE_VLVFB(vlvf_index * 2 + vind / 32), bits); | |
3225 | IXGBE_WRITE_REG(hw, IXGBE_VLVF(vlvf_index), IXGBE_VLVF_VIEN | vlan); | |
63d9379a AD |
3226 | |
3227 | vfta_update: | |
5ac736a6 | 3228 | /* Update VFTA now that we are ready for traffic */ |
c18fbd5f AD |
3229 | if (vfta_delta) |
3230 | IXGBE_WRITE_REG(hw, IXGBE_VFTA(regidx), vfta); | |
21ce849b MC |
3231 | |
3232 | return 0; | |
3233 | } | |
3234 | ||
3235 | /** | |
3236 | * ixgbe_clear_vfta_generic - Clear VLAN filter table | |
3237 | * @hw: pointer to hardware structure | |
3238 | * | |
3239 | * Clears the VLAN filer table, and the VMDq index associated with the filter | |
3240 | **/ | |
3241 | s32 ixgbe_clear_vfta_generic(struct ixgbe_hw *hw) | |
3242 | { | |
3243 | u32 offset; | |
3244 | ||
3245 | for (offset = 0; offset < hw->mac.vft_size; offset++) | |
3246 | IXGBE_WRITE_REG(hw, IXGBE_VFTA(offset), 0); | |
3247 | ||
3248 | for (offset = 0; offset < IXGBE_VLVF_ENTRIES; offset++) { | |
3249 | IXGBE_WRITE_REG(hw, IXGBE_VLVF(offset), 0); | |
5ac736a6 AD |
3250 | IXGBE_WRITE_REG(hw, IXGBE_VLVFB(offset * 2), 0); |
3251 | IXGBE_WRITE_REG(hw, IXGBE_VLVFB(offset * 2 + 1), 0); | |
21ce849b MC |
3252 | } |
3253 | ||
3254 | return 0; | |
3255 | } | |
3256 | ||
aac9e053 DS |
3257 | /** |
3258 | * ixgbe_need_crosstalk_fix - Determine if we need to do cross talk fix | |
3259 | * @hw: pointer to hardware structure | |
3260 | * | |
3261 | * Contains the logic to identify if we need to verify link for the | |
3262 | * crosstalk fix | |
3263 | **/ | |
3264 | static bool ixgbe_need_crosstalk_fix(struct ixgbe_hw *hw) | |
3265 | { | |
3266 | /* Does FW say we need the fix */ | |
3267 | if (!hw->need_crosstalk_fix) | |
3268 | return false; | |
3269 | ||
3270 | /* Only consider SFP+ PHYs i.e. media type fiber */ | |
3271 | switch (hw->mac.ops.get_media_type(hw)) { | |
3272 | case ixgbe_media_type_fiber: | |
3273 | case ixgbe_media_type_fiber_qsfp: | |
3274 | break; | |
3275 | default: | |
3276 | return false; | |
3277 | } | |
3278 | ||
3279 | return true; | |
3280 | } | |
3281 | ||
21ce849b MC |
3282 | /** |
3283 | * ixgbe_check_mac_link_generic - Determine link and speed status | |
3284 | * @hw: pointer to hardware structure | |
3285 | * @speed: pointer to link speed | |
3286 | * @link_up: true when link is up | |
3287 | * @link_up_wait_to_complete: bool used to wait for link up or not | |
3288 | * | |
3289 | * Reads the links register to determine if link is up and the current speed | |
3290 | **/ | |
3291 | s32 ixgbe_check_mac_link_generic(struct ixgbe_hw *hw, ixgbe_link_speed *speed, | |
8c7bea32 | 3292 | bool *link_up, bool link_up_wait_to_complete) |
21ce849b | 3293 | { |
48de36c5 | 3294 | u32 links_reg, links_orig; |
21ce849b MC |
3295 | u32 i; |
3296 | ||
aac9e053 DS |
3297 | /* If Crosstalk fix enabled do the sanity check of making sure |
3298 | * the SFP+ cage is full. | |
3299 | */ | |
3300 | if (ixgbe_need_crosstalk_fix(hw)) { | |
3301 | u32 sfp_cage_full; | |
3302 | ||
3303 | switch (hw->mac.type) { | |
3304 | case ixgbe_mac_82599EB: | |
3305 | sfp_cage_full = IXGBE_READ_REG(hw, IXGBE_ESDP) & | |
3306 | IXGBE_ESDP_SDP2; | |
3307 | break; | |
3308 | case ixgbe_mac_X550EM_x: | |
3309 | case ixgbe_mac_x550em_a: | |
3310 | sfp_cage_full = IXGBE_READ_REG(hw, IXGBE_ESDP) & | |
3311 | IXGBE_ESDP_SDP0; | |
3312 | break; | |
3313 | default: | |
3314 | /* sanity check - No SFP+ devices here */ | |
3315 | sfp_cage_full = false; | |
3316 | break; | |
3317 | } | |
3318 | ||
3319 | if (!sfp_cage_full) { | |
3320 | *link_up = false; | |
3321 | *speed = IXGBE_LINK_SPEED_UNKNOWN; | |
3322 | return 0; | |
3323 | } | |
3324 | } | |
3325 | ||
48de36c5 ET |
3326 | /* clear the old state */ |
3327 | links_orig = IXGBE_READ_REG(hw, IXGBE_LINKS); | |
3328 | ||
21ce849b | 3329 | links_reg = IXGBE_READ_REG(hw, IXGBE_LINKS); |
48de36c5 ET |
3330 | |
3331 | if (links_orig != links_reg) { | |
3332 | hw_dbg(hw, "LINKS changed from %08X to %08X\n", | |
3333 | links_orig, links_reg); | |
3334 | } | |
3335 | ||
21ce849b MC |
3336 | if (link_up_wait_to_complete) { |
3337 | for (i = 0; i < IXGBE_LINK_UP_TIME; i++) { | |
3338 | if (links_reg & IXGBE_LINKS_UP) { | |
3339 | *link_up = true; | |
3340 | break; | |
3341 | } else { | |
3342 | *link_up = false; | |
3343 | } | |
3344 | msleep(100); | |
3345 | links_reg = IXGBE_READ_REG(hw, IXGBE_LINKS); | |
3346 | } | |
3347 | } else { | |
3348 | if (links_reg & IXGBE_LINKS_UP) | |
3349 | *link_up = true; | |
3350 | else | |
3351 | *link_up = false; | |
3352 | } | |
3353 | ||
9a75a1ac DS |
3354 | switch (links_reg & IXGBE_LINKS_SPEED_82599) { |
3355 | case IXGBE_LINKS_SPEED_10G_82599: | |
3356 | if ((hw->mac.type >= ixgbe_mac_X550) && | |
3357 | (links_reg & IXGBE_LINKS_SPEED_NON_STD)) | |
3358 | *speed = IXGBE_LINK_SPEED_2_5GB_FULL; | |
3359 | else | |
3360 | *speed = IXGBE_LINK_SPEED_10GB_FULL; | |
3361 | break; | |
3362 | case IXGBE_LINKS_SPEED_1G_82599: | |
21ce849b | 3363 | *speed = IXGBE_LINK_SPEED_1GB_FULL; |
9a75a1ac DS |
3364 | break; |
3365 | case IXGBE_LINKS_SPEED_100_82599: | |
3366 | if ((hw->mac.type >= ixgbe_mac_X550) && | |
3367 | (links_reg & IXGBE_LINKS_SPEED_NON_STD)) | |
3368 | *speed = IXGBE_LINK_SPEED_5GB_FULL; | |
3369 | else | |
3370 | *speed = IXGBE_LINK_SPEED_100_FULL; | |
3371 | break; | |
b3eb4e18 MR |
3372 | case IXGBE_LINKS_SPEED_10_X550EM_A: |
3373 | *speed = IXGBE_LINK_SPEED_UNKNOWN; | |
3374 | if (hw->device_id == IXGBE_DEV_ID_X550EM_A_1G_T || | |
3375 | hw->device_id == IXGBE_DEV_ID_X550EM_A_1G_T_L) { | |
3376 | *speed = IXGBE_LINK_SPEED_10_FULL; | |
3377 | } | |
3378 | break; | |
9a75a1ac | 3379 | default: |
63d778df | 3380 | *speed = IXGBE_LINK_SPEED_UNKNOWN; |
9a75a1ac | 3381 | } |
21ce849b | 3382 | |
21ce849b MC |
3383 | return 0; |
3384 | } | |
a391f1d5 DS |
3385 | |
3386 | /** | |
49ce9c2c | 3387 | * ixgbe_get_wwn_prefix_generic - Get alternative WWNN/WWPN prefix from |
a391f1d5 DS |
3388 | * the EEPROM |
3389 | * @hw: pointer to hardware structure | |
3390 | * @wwnn_prefix: the alternative WWNN prefix | |
3391 | * @wwpn_prefix: the alternative WWPN prefix | |
3392 | * | |
3393 | * This function will read the EEPROM from the alternative SAN MAC address | |
3394 | * block to check the support for the alternative WWNN/WWPN prefix support. | |
3395 | **/ | |
3396 | s32 ixgbe_get_wwn_prefix_generic(struct ixgbe_hw *hw, u16 *wwnn_prefix, | |
e7cf745b | 3397 | u16 *wwpn_prefix) |
a391f1d5 DS |
3398 | { |
3399 | u16 offset, caps; | |
3400 | u16 alt_san_mac_blk_offset; | |
3401 | ||
3402 | /* clear output first */ | |
3403 | *wwnn_prefix = 0xFFFF; | |
3404 | *wwpn_prefix = 0xFFFF; | |
3405 | ||
3406 | /* check if alternative SAN MAC is supported */ | |
be0c27b4 MR |
3407 | offset = IXGBE_ALT_SAN_MAC_ADDR_BLK_PTR; |
3408 | if (hw->eeprom.ops.read(hw, offset, &alt_san_mac_blk_offset)) | |
3409 | goto wwn_prefix_err; | |
a391f1d5 DS |
3410 | |
3411 | if ((alt_san_mac_blk_offset == 0) || | |
3412 | (alt_san_mac_blk_offset == 0xFFFF)) | |
e90dd264 | 3413 | return 0; |
a391f1d5 DS |
3414 | |
3415 | /* check capability in alternative san mac address block */ | |
3416 | offset = alt_san_mac_blk_offset + IXGBE_ALT_SAN_MAC_ADDR_CAPS_OFFSET; | |
be0c27b4 MR |
3417 | if (hw->eeprom.ops.read(hw, offset, &caps)) |
3418 | goto wwn_prefix_err; | |
a391f1d5 | 3419 | if (!(caps & IXGBE_ALT_SAN_MAC_ADDR_CAPS_ALTWWN)) |
e90dd264 | 3420 | return 0; |
a391f1d5 DS |
3421 | |
3422 | /* get the corresponding prefix for WWNN/WWPN */ | |
3423 | offset = alt_san_mac_blk_offset + IXGBE_ALT_SAN_MAC_ADDR_WWNN_OFFSET; | |
be0c27b4 MR |
3424 | if (hw->eeprom.ops.read(hw, offset, wwnn_prefix)) |
3425 | hw_err(hw, "eeprom read at offset %d failed\n", offset); | |
a391f1d5 DS |
3426 | |
3427 | offset = alt_san_mac_blk_offset + IXGBE_ALT_SAN_MAC_ADDR_WWPN_OFFSET; | |
be0c27b4 MR |
3428 | if (hw->eeprom.ops.read(hw, offset, wwpn_prefix)) |
3429 | goto wwn_prefix_err; | |
a391f1d5 | 3430 | |
a391f1d5 | 3431 | return 0; |
be0c27b4 MR |
3432 | |
3433 | wwn_prefix_err: | |
3434 | hw_err(hw, "eeprom read at offset %d failed\n", offset); | |
3435 | return 0; | |
a391f1d5 | 3436 | } |
a985b6c3 GR |
3437 | |
3438 | /** | |
3439 | * ixgbe_set_mac_anti_spoofing - Enable/Disable MAC anti-spoofing | |
3440 | * @hw: pointer to hardware structure | |
77f192af ET |
3441 | * @enable: enable or disable switch for MAC anti-spoofing |
3442 | * @vf: Virtual Function pool - VF Pool to set for MAC anti-spoofing | |
a985b6c3 GR |
3443 | * |
3444 | **/ | |
77f192af | 3445 | void ixgbe_set_mac_anti_spoofing(struct ixgbe_hw *hw, bool enable, int vf) |
a985b6c3 | 3446 | { |
77f192af ET |
3447 | int vf_target_reg = vf >> 3; |
3448 | int vf_target_shift = vf % 8; | |
3449 | u32 pfvfspoof; | |
a985b6c3 GR |
3450 | |
3451 | if (hw->mac.type == ixgbe_mac_82598EB) | |
3452 | return; | |
3453 | ||
77f192af | 3454 | pfvfspoof = IXGBE_READ_REG(hw, IXGBE_PFVFSPOOF(vf_target_reg)); |
a985b6c3 | 3455 | if (enable) |
77f192af ET |
3456 | pfvfspoof |= BIT(vf_target_shift); |
3457 | else | |
3458 | pfvfspoof &= ~BIT(vf_target_shift); | |
3459 | IXGBE_WRITE_REG(hw, IXGBE_PFVFSPOOF(vf_target_reg), pfvfspoof); | |
a985b6c3 GR |
3460 | } |
3461 | ||
3462 | /** | |
3463 | * ixgbe_set_vlan_anti_spoofing - Enable/Disable VLAN anti-spoofing | |
3464 | * @hw: pointer to hardware structure | |
3465 | * @enable: enable or disable switch for VLAN anti-spoofing | |
5ba643c6 | 3466 | * @vf: Virtual Function pool - VF Pool to set for VLAN anti-spoofing |
a985b6c3 GR |
3467 | * |
3468 | **/ | |
3469 | void ixgbe_set_vlan_anti_spoofing(struct ixgbe_hw *hw, bool enable, int vf) | |
3470 | { | |
3471 | int vf_target_reg = vf >> 3; | |
3472 | int vf_target_shift = vf % 8 + IXGBE_SPOOF_VLANAS_SHIFT; | |
3473 | u32 pfvfspoof; | |
3474 | ||
3475 | if (hw->mac.type == ixgbe_mac_82598EB) | |
3476 | return; | |
3477 | ||
3478 | pfvfspoof = IXGBE_READ_REG(hw, IXGBE_PFVFSPOOF(vf_target_reg)); | |
3479 | if (enable) | |
b4f47a48 | 3480 | pfvfspoof |= BIT(vf_target_shift); |
a985b6c3 | 3481 | else |
b4f47a48 | 3482 | pfvfspoof &= ~BIT(vf_target_shift); |
a985b6c3 GR |
3483 | IXGBE_WRITE_REG(hw, IXGBE_PFVFSPOOF(vf_target_reg), pfvfspoof); |
3484 | } | |
b776d104 ET |
3485 | |
3486 | /** | |
3487 | * ixgbe_get_device_caps_generic - Get additional device capabilities | |
3488 | * @hw: pointer to hardware structure | |
3489 | * @device_caps: the EEPROM word with the extra device capabilities | |
3490 | * | |
3491 | * This function will read the EEPROM location for the device capabilities, | |
3492 | * and return the word through device_caps. | |
3493 | **/ | |
3494 | s32 ixgbe_get_device_caps_generic(struct ixgbe_hw *hw, u16 *device_caps) | |
3495 | { | |
3496 | hw->eeprom.ops.read(hw, IXGBE_DEVICE_CAPS, device_caps); | |
3497 | ||
3498 | return 0; | |
3499 | } | |
80605c65 JF |
3500 | |
3501 | /** | |
3502 | * ixgbe_set_rxpba_generic - Initialize RX packet buffer | |
3503 | * @hw: pointer to hardware structure | |
3504 | * @num_pb: number of packet buffers to allocate | |
3505 | * @headroom: reserve n KB of headroom | |
3506 | * @strategy: packet buffer allocation strategy | |
3507 | **/ | |
3508 | void ixgbe_set_rxpba_generic(struct ixgbe_hw *hw, | |
3509 | int num_pb, | |
3510 | u32 headroom, | |
3511 | int strategy) | |
3512 | { | |
3513 | u32 pbsize = hw->mac.rx_pb_size; | |
3514 | int i = 0; | |
3515 | u32 rxpktsize, txpktsize, txpbthresh; | |
3516 | ||
3517 | /* Reserve headroom */ | |
3518 | pbsize -= headroom; | |
3519 | ||
3520 | if (!num_pb) | |
3521 | num_pb = 1; | |
3522 | ||
3523 | /* Divide remaining packet buffer space amongst the number | |
3524 | * of packet buffers requested using supplied strategy. | |
3525 | */ | |
3526 | switch (strategy) { | |
3527 | case (PBA_STRATEGY_WEIGHTED): | |
3528 | /* pba_80_48 strategy weight first half of packet buffer with | |
3529 | * 5/8 of the packet buffer space. | |
3530 | */ | |
3531 | rxpktsize = ((pbsize * 5 * 2) / (num_pb * 8)); | |
3532 | pbsize -= rxpktsize * (num_pb / 2); | |
3533 | rxpktsize <<= IXGBE_RXPBSIZE_SHIFT; | |
3534 | for (; i < (num_pb / 2); i++) | |
3535 | IXGBE_WRITE_REG(hw, IXGBE_RXPBSIZE(i), rxpktsize); | |
5463fce6 | 3536 | fallthrough; /* configure remaining packet buffers */ |
80605c65 JF |
3537 | case (PBA_STRATEGY_EQUAL): |
3538 | /* Divide the remaining Rx packet buffer evenly among the TCs */ | |
3539 | rxpktsize = (pbsize / (num_pb - i)) << IXGBE_RXPBSIZE_SHIFT; | |
3540 | for (; i < num_pb; i++) | |
3541 | IXGBE_WRITE_REG(hw, IXGBE_RXPBSIZE(i), rxpktsize); | |
3542 | break; | |
3543 | default: | |
3544 | break; | |
3545 | } | |
3546 | ||
3547 | /* | |
3548 | * Setup Tx packet buffer and threshold equally for all TCs | |
3549 | * TXPBTHRESH register is set in K so divide by 1024 and subtract | |
3550 | * 10 since the largest packet we support is just over 9K. | |
3551 | */ | |
3552 | txpktsize = IXGBE_TXPBSIZE_MAX / num_pb; | |
3553 | txpbthresh = (txpktsize / 1024) - IXGBE_TXPKT_SIZE_MAX; | |
3554 | for (i = 0; i < num_pb; i++) { | |
3555 | IXGBE_WRITE_REG(hw, IXGBE_TXPBSIZE(i), txpktsize); | |
3556 | IXGBE_WRITE_REG(hw, IXGBE_TXPBTHRESH(i), txpbthresh); | |
3557 | } | |
3558 | ||
3559 | /* Clear unused TCs, if any, to zero buffer size*/ | |
3560 | for (; i < IXGBE_MAX_PB; i++) { | |
3561 | IXGBE_WRITE_REG(hw, IXGBE_RXPBSIZE(i), 0); | |
3562 | IXGBE_WRITE_REG(hw, IXGBE_TXPBSIZE(i), 0); | |
3563 | IXGBE_WRITE_REG(hw, IXGBE_TXPBTHRESH(i), 0); | |
3564 | } | |
3565 | } | |
9612de92 ET |
3566 | |
3567 | /** | |
3568 | * ixgbe_calculate_checksum - Calculate checksum for buffer | |
3569 | * @buffer: pointer to EEPROM | |
3570 | * @length: size of EEPROM to calculate a checksum for | |
49ce9c2c | 3571 | * |
9612de92 ET |
3572 | * Calculates the checksum for some buffer on a specified length. The |
3573 | * checksum calculated is returned. | |
3574 | **/ | |
cb8e0514 | 3575 | u8 ixgbe_calculate_checksum(u8 *buffer, u32 length) |
9612de92 ET |
3576 | { |
3577 | u32 i; | |
3578 | u8 sum = 0; | |
3579 | ||
3580 | if (!buffer) | |
3581 | return 0; | |
3582 | ||
3583 | for (i = 0; i < length; i++) | |
3584 | sum += buffer[i]; | |
3585 | ||
3586 | return (u8) (0 - sum); | |
3587 | } | |
3588 | ||
3589 | /** | |
3efa9ed2 | 3590 | * ixgbe_hic_unlocked - Issue command to manageability block unlocked |
9612de92 | 3591 | * @hw: pointer to the HW structure |
3efa9ed2 | 3592 | * @buffer: command to write and where the return status will be placed |
c466d7a7 | 3593 | * @length: length of buffer, must be multiple of 4 bytes |
b48e4aa3 | 3594 | * @timeout: time in ms to wait for command completion |
9612de92 | 3595 | * |
3efa9ed2 MR |
3596 | * Communicates with the manageability block. On success return 0 |
3597 | * else returns semaphore error when encountering an error acquiring | |
3598 | * semaphore or IXGBE_ERR_HOST_INTERFACE_COMMAND when command fails. | |
3599 | * | |
3600 | * This function assumes that the IXGBE_GSSR_SW_MNG_SM semaphore is held | |
3601 | * by the caller. | |
9612de92 | 3602 | **/ |
3efa9ed2 MR |
3603 | s32 ixgbe_hic_unlocked(struct ixgbe_hw *hw, u32 *buffer, u32 length, |
3604 | u32 timeout) | |
9612de92 | 3605 | { |
3efa9ed2 MR |
3606 | u32 hicr, i, fwsts; |
3607 | u16 dword_len; | |
9612de92 | 3608 | |
5cffde30 | 3609 | if (!length || length > IXGBE_HI_MAX_BLOCK_BYTE_LENGTH) { |
b48e4aa3 | 3610 | hw_dbg(hw, "Buffer length failure buffersize-%d.\n", length); |
e90dd264 | 3611 | return IXGBE_ERR_HOST_INTERFACE_COMMAND; |
9612de92 ET |
3612 | } |
3613 | ||
b48e4aa3 DS |
3614 | /* Set bit 9 of FWSTS clearing FW reset indication */ |
3615 | fwsts = IXGBE_READ_REG(hw, IXGBE_FWSTS); | |
3616 | IXGBE_WRITE_REG(hw, IXGBE_FWSTS, fwsts | IXGBE_FWSTS_FWRI); | |
3617 | ||
9612de92 ET |
3618 | /* Check that the host interface is enabled. */ |
3619 | hicr = IXGBE_READ_REG(hw, IXGBE_HICR); | |
5cffde30 | 3620 | if (!(hicr & IXGBE_HICR_EN)) { |
9612de92 | 3621 | hw_dbg(hw, "IXGBE_HOST_EN bit disabled.\n"); |
3efa9ed2 | 3622 | return IXGBE_ERR_HOST_INTERFACE_COMMAND; |
9612de92 ET |
3623 | } |
3624 | ||
b48e4aa3 | 3625 | /* Calculate length in DWORDs. We must be DWORD aligned */ |
5cffde30 | 3626 | if (length % sizeof(u32)) { |
b48e4aa3 | 3627 | hw_dbg(hw, "Buffer length failure, not aligned to dword"); |
3efa9ed2 | 3628 | return IXGBE_ERR_INVALID_ARGUMENT; |
b48e4aa3 DS |
3629 | } |
3630 | ||
9612de92 ET |
3631 | dword_len = length >> 2; |
3632 | ||
5cffde30 | 3633 | /* The device driver writes the relevant command block |
9612de92 ET |
3634 | * into the ram area. |
3635 | */ | |
3636 | for (i = 0; i < dword_len; i++) | |
3637 | IXGBE_WRITE_REG_ARRAY(hw, IXGBE_FLEX_MNG, | |
9cfbfa70 | 3638 | i, (__force u32)cpu_to_le32(buffer[i])); |
9612de92 ET |
3639 | |
3640 | /* Setting this bit tells the ARC that a new command is pending. */ | |
3641 | IXGBE_WRITE_REG(hw, IXGBE_HICR, hicr | IXGBE_HICR_C); | |
3642 | ||
b48e4aa3 | 3643 | for (i = 0; i < timeout; i++) { |
9612de92 ET |
3644 | hicr = IXGBE_READ_REG(hw, IXGBE_HICR); |
3645 | if (!(hicr & IXGBE_HICR_C)) | |
3646 | break; | |
3647 | usleep_range(1000, 2000); | |
3648 | } | |
3649 | ||
3650 | /* Check command successful completion. */ | |
5cffde30 | 3651 | if ((timeout && i == timeout) || |
3efa9ed2 MR |
3652 | !(IXGBE_READ_REG(hw, IXGBE_HICR) & IXGBE_HICR_SV)) |
3653 | return IXGBE_ERR_HOST_INTERFACE_COMMAND; | |
3654 | ||
3655 | return 0; | |
3656 | } | |
3657 | ||
3658 | /** | |
3659 | * ixgbe_host_interface_command - Issue command to manageability block | |
3660 | * @hw: pointer to the HW structure | |
3661 | * @buffer: contains the command to write and where the return status will | |
3662 | * be placed | |
3663 | * @length: length of buffer, must be multiple of 4 bytes | |
3664 | * @timeout: time in ms to wait for command completion | |
3665 | * @return_data: read and return data from the buffer (true) or not (false) | |
3666 | * Needed because FW structures are big endian and decoding of | |
3667 | * these fields can be 8 bit or 16 bit based on command. Decoding | |
3668 | * is not easily understood without making a table of commands. | |
3669 | * So we will leave this up to the caller to read back the data | |
3670 | * in these cases. | |
3671 | * | |
3672 | * Communicates with the manageability block. On success return 0 | |
3673 | * else return IXGBE_ERR_HOST_INTERFACE_COMMAND. | |
3674 | **/ | |
3675 | s32 ixgbe_host_interface_command(struct ixgbe_hw *hw, void *buffer, | |
3676 | u32 length, u32 timeout, | |
3677 | bool return_data) | |
3678 | { | |
3679 | u32 hdr_size = sizeof(struct ixgbe_hic_hdr); | |
3680 | union { | |
3681 | struct ixgbe_hic_hdr hdr; | |
3682 | u32 u32arr[1]; | |
3683 | } *bp = buffer; | |
3684 | u16 buf_len, dword_len; | |
3685 | s32 status; | |
3686 | u32 bi; | |
3687 | ||
3688 | if (!length || length > IXGBE_HI_MAX_BLOCK_BYTE_LENGTH) { | |
3689 | hw_dbg(hw, "Buffer length failure buffersize-%d.\n", length); | |
3690 | return IXGBE_ERR_HOST_INTERFACE_COMMAND; | |
9612de92 | 3691 | } |
3efa9ed2 MR |
3692 | /* Take management host interface semaphore */ |
3693 | status = hw->mac.ops.acquire_swfw_sync(hw, IXGBE_GSSR_SW_MNG_SM); | |
3694 | if (status) | |
3695 | return status; | |
3696 | ||
3697 | status = ixgbe_hic_unlocked(hw, buffer, length, timeout); | |
3698 | if (status) | |
3699 | goto rel_out; | |
9612de92 | 3700 | |
b48e4aa3 | 3701 | if (!return_data) |
af741901 | 3702 | goto rel_out; |
b48e4aa3 | 3703 | |
9612de92 ET |
3704 | /* Calculate length in DWORDs */ |
3705 | dword_len = hdr_size >> 2; | |
3706 | ||
3707 | /* first pull in the header so we know the buffer length */ | |
331bcf45 | 3708 | for (bi = 0; bi < dword_len; bi++) { |
5cffde30 MR |
3709 | bp->u32arr[bi] = IXGBE_READ_REG_ARRAY(hw, IXGBE_FLEX_MNG, bi); |
3710 | le32_to_cpus(&bp->u32arr[bi]); | |
79488c58 | 3711 | } |
9612de92 ET |
3712 | |
3713 | /* If there is any thing in data position pull it in */ | |
5cffde30 MR |
3714 | buf_len = bp->hdr.buf_len; |
3715 | if (!buf_len) | |
af741901 | 3716 | goto rel_out; |
9612de92 | 3717 | |
73457165 | 3718 | if (length < round_up(buf_len, 4) + hdr_size) { |
9612de92 | 3719 | hw_dbg(hw, "Buffer not large enough for reply message.\n"); |
af741901 MR |
3720 | status = IXGBE_ERR_HOST_INTERFACE_COMMAND; |
3721 | goto rel_out; | |
9612de92 ET |
3722 | } |
3723 | ||
331bcf45 ET |
3724 | /* Calculate length in DWORDs, add 3 for odd lengths */ |
3725 | dword_len = (buf_len + 3) >> 2; | |
9612de92 | 3726 | |
5cffde30 | 3727 | /* Pull in the rest of the buffer (bi is where we left off) */ |
331bcf45 | 3728 | for (; bi <= dword_len; bi++) { |
5cffde30 MR |
3729 | bp->u32arr[bi] = IXGBE_READ_REG_ARRAY(hw, IXGBE_FLEX_MNG, bi); |
3730 | le32_to_cpus(&bp->u32arr[bi]); | |
331bcf45 | 3731 | } |
9612de92 | 3732 | |
af741901 MR |
3733 | rel_out: |
3734 | hw->mac.ops.release_swfw_sync(hw, IXGBE_GSSR_SW_MNG_SM); | |
3735 | ||
3736 | return status; | |
9612de92 ET |
3737 | } |
3738 | ||
3739 | /** | |
3740 | * ixgbe_set_fw_drv_ver_generic - Sends driver version to firmware | |
3741 | * @hw: pointer to the HW structure | |
3742 | * @maj: driver version major number | |
3743 | * @min: driver version minor number | |
3744 | * @build: driver version build number | |
3745 | * @sub: driver version sub build number | |
cb8e0514 TN |
3746 | * @len: length of driver_ver string |
3747 | * @driver_ver: driver string | |
9612de92 ET |
3748 | * |
3749 | * Sends driver version number to firmware through the manageability | |
3750 | * block. On success return 0 | |
3751 | * else returns IXGBE_ERR_SWFW_SYNC when encountering an error acquiring | |
3752 | * semaphore or IXGBE_ERR_HOST_INTERFACE_COMMAND when command fails. | |
3753 | **/ | |
3754 | s32 ixgbe_set_fw_drv_ver_generic(struct ixgbe_hw *hw, u8 maj, u8 min, | |
cb8e0514 TN |
3755 | u8 build, u8 sub, __always_unused u16 len, |
3756 | __always_unused const char *driver_ver) | |
9612de92 ET |
3757 | { |
3758 | struct ixgbe_hic_drv_info fw_cmd; | |
3759 | int i; | |
e90dd264 | 3760 | s32 ret_val; |
9612de92 | 3761 | |
9612de92 ET |
3762 | fw_cmd.hdr.cmd = FW_CEM_CMD_DRIVER_INFO; |
3763 | fw_cmd.hdr.buf_len = FW_CEM_CMD_DRIVER_INFO_LEN; | |
3764 | fw_cmd.hdr.cmd_or_resp.cmd_resv = FW_CEM_CMD_RESERVED; | |
3775b814 | 3765 | fw_cmd.port_num = hw->bus.func; |
9612de92 ET |
3766 | fw_cmd.ver_maj = maj; |
3767 | fw_cmd.ver_min = min; | |
3768 | fw_cmd.ver_build = build; | |
3769 | fw_cmd.ver_sub = sub; | |
3770 | fw_cmd.hdr.checksum = 0; | |
9612de92 ET |
3771 | fw_cmd.pad = 0; |
3772 | fw_cmd.pad2 = 0; | |
dcfd6b83 ET |
3773 | fw_cmd.hdr.checksum = ixgbe_calculate_checksum((u8 *)&fw_cmd, |
3774 | (FW_CEM_HDR_LEN + fw_cmd.hdr.buf_len)); | |
9612de92 ET |
3775 | |
3776 | for (i = 0; i <= FW_CEM_MAX_RETRIES; i++) { | |
5cffde30 | 3777 | ret_val = ixgbe_host_interface_command(hw, &fw_cmd, |
b48e4aa3 DS |
3778 | sizeof(fw_cmd), |
3779 | IXGBE_HI_COMMAND_TIMEOUT, | |
3780 | true); | |
9612de92 ET |
3781 | if (ret_val != 0) |
3782 | continue; | |
3783 | ||
3784 | if (fw_cmd.hdr.cmd_or_resp.ret_status == | |
3785 | FW_CEM_RESP_STATUS_SUCCESS) | |
3786 | ret_val = 0; | |
3787 | else | |
3788 | ret_val = IXGBE_ERR_HOST_INTERFACE_COMMAND; | |
3789 | ||
3790 | break; | |
3791 | } | |
3792 | ||
9612de92 ET |
3793 | return ret_val; |
3794 | } | |
ff9d1a5a ET |
3795 | |
3796 | /** | |
3797 | * ixgbe_clear_tx_pending - Clear pending TX work from the PCIe fifo | |
3798 | * @hw: pointer to the hardware structure | |
3799 | * | |
3800 | * The 82599 and x540 MACs can experience issues if TX work is still pending | |
3801 | * when a reset occurs. This function prevents this by flushing the PCIe | |
3802 | * buffers on the system. | |
3803 | **/ | |
3804 | void ixgbe_clear_tx_pending(struct ixgbe_hw *hw) | |
3805 | { | |
71bde601 DS |
3806 | u32 gcr_ext, hlreg0, i, poll; |
3807 | u16 value; | |
ff9d1a5a ET |
3808 | |
3809 | /* | |
3810 | * If double reset is not requested then all transactions should | |
3811 | * already be clear and as such there is no work to do | |
3812 | */ | |
3813 | if (!(hw->mac.flags & IXGBE_FLAGS_DOUBLE_RESET_REQUIRED)) | |
3814 | return; | |
3815 | ||
3816 | /* | |
3817 | * Set loopback enable to prevent any transmits from being sent | |
3818 | * should the link come up. This assumes that the RXCTRL.RXEN bit | |
3819 | * has already been cleared. | |
3820 | */ | |
3821 | hlreg0 = IXGBE_READ_REG(hw, IXGBE_HLREG0); | |
3822 | IXGBE_WRITE_REG(hw, IXGBE_HLREG0, hlreg0 | IXGBE_HLREG0_LPBK); | |
3823 | ||
71bde601 DS |
3824 | /* wait for a last completion before clearing buffers */ |
3825 | IXGBE_WRITE_FLUSH(hw); | |
3826 | usleep_range(3000, 6000); | |
3827 | ||
3828 | /* Before proceeding, make sure that the PCIe block does not have | |
3829 | * transactions pending. | |
3830 | */ | |
3831 | poll = ixgbe_pcie_timeout_poll(hw); | |
3832 | for (i = 0; i < poll; i++) { | |
3833 | usleep_range(100, 200); | |
3834 | value = ixgbe_read_pci_cfg_word(hw, IXGBE_PCI_DEVICE_STATUS); | |
3835 | if (ixgbe_removed(hw->hw_addr)) | |
3836 | break; | |
3837 | if (!(value & IXGBE_PCI_DEVICE_STATUS_TRANSACTION_PENDING)) | |
3838 | break; | |
3839 | } | |
3840 | ||
ff9d1a5a ET |
3841 | /* initiate cleaning flow for buffers in the PCIe transaction layer */ |
3842 | gcr_ext = IXGBE_READ_REG(hw, IXGBE_GCR_EXT); | |
3843 | IXGBE_WRITE_REG(hw, IXGBE_GCR_EXT, | |
3844 | gcr_ext | IXGBE_GCR_EXT_BUFFERS_CLEAR); | |
3845 | ||
3846 | /* Flush all writes and allow 20usec for all transactions to clear */ | |
3847 | IXGBE_WRITE_FLUSH(hw); | |
3848 | udelay(20); | |
3849 | ||
3850 | /* restore previous register values */ | |
3851 | IXGBE_WRITE_REG(hw, IXGBE_GCR_EXT, gcr_ext); | |
3852 | IXGBE_WRITE_REG(hw, IXGBE_HLREG0, hlreg0); | |
3853 | } | |
e1ea9158 DS |
3854 | |
3855 | static const u8 ixgbe_emc_temp_data[4] = { | |
3856 | IXGBE_EMC_INTERNAL_DATA, | |
3857 | IXGBE_EMC_DIODE1_DATA, | |
3858 | IXGBE_EMC_DIODE2_DATA, | |
3859 | IXGBE_EMC_DIODE3_DATA | |
3860 | }; | |
3861 | static const u8 ixgbe_emc_therm_limit[4] = { | |
3862 | IXGBE_EMC_INTERNAL_THERM_LIMIT, | |
3863 | IXGBE_EMC_DIODE1_THERM_LIMIT, | |
3864 | IXGBE_EMC_DIODE2_THERM_LIMIT, | |
3865 | IXGBE_EMC_DIODE3_THERM_LIMIT | |
3866 | }; | |
3867 | ||
3868 | /** | |
3869 | * ixgbe_get_ets_data - Extracts the ETS bit data | |
3870 | * @hw: pointer to hardware structure | |
3871 | * @ets_cfg: extected ETS data | |
3872 | * @ets_offset: offset of ETS data | |
3873 | * | |
3874 | * Returns error code. | |
3875 | **/ | |
3876 | static s32 ixgbe_get_ets_data(struct ixgbe_hw *hw, u16 *ets_cfg, | |
3877 | u16 *ets_offset) | |
3878 | { | |
e90dd264 | 3879 | s32 status; |
e1ea9158 DS |
3880 | |
3881 | status = hw->eeprom.ops.read(hw, IXGBE_ETS_CFG, ets_offset); | |
3882 | if (status) | |
e90dd264 | 3883 | return status; |
e1ea9158 | 3884 | |
e90dd264 MR |
3885 | if ((*ets_offset == 0x0000) || (*ets_offset == 0xFFFF)) |
3886 | return IXGBE_NOT_IMPLEMENTED; | |
e1ea9158 DS |
3887 | |
3888 | status = hw->eeprom.ops.read(hw, *ets_offset, ets_cfg); | |
3889 | if (status) | |
e90dd264 | 3890 | return status; |
e1ea9158 | 3891 | |
e90dd264 MR |
3892 | if ((*ets_cfg & IXGBE_ETS_TYPE_MASK) != IXGBE_ETS_TYPE_EMC_SHIFTED) |
3893 | return IXGBE_NOT_IMPLEMENTED; | |
e1ea9158 | 3894 | |
e90dd264 | 3895 | return 0; |
e1ea9158 DS |
3896 | } |
3897 | ||
3898 | /** | |
3899 | * ixgbe_get_thermal_sensor_data - Gathers thermal sensor data | |
3900 | * @hw: pointer to hardware structure | |
3901 | * | |
3902 | * Returns the thermal sensor data structure | |
3903 | **/ | |
3904 | s32 ixgbe_get_thermal_sensor_data_generic(struct ixgbe_hw *hw) | |
3905 | { | |
e90dd264 | 3906 | s32 status; |
e1ea9158 DS |
3907 | u16 ets_offset; |
3908 | u16 ets_cfg; | |
3909 | u16 ets_sensor; | |
3910 | u8 num_sensors; | |
3911 | u8 i; | |
3912 | struct ixgbe_thermal_sensor_data *data = &hw->mac.thermal_sensor_data; | |
3913 | ||
3ca8bc6d | 3914 | /* Only support thermal sensors attached to physical port 0 */ |
e90dd264 MR |
3915 | if ((IXGBE_READ_REG(hw, IXGBE_STATUS) & IXGBE_STATUS_LAN_ID_1)) |
3916 | return IXGBE_NOT_IMPLEMENTED; | |
e1ea9158 DS |
3917 | |
3918 | status = ixgbe_get_ets_data(hw, &ets_cfg, &ets_offset); | |
3919 | if (status) | |
e90dd264 | 3920 | return status; |
e1ea9158 DS |
3921 | |
3922 | num_sensors = (ets_cfg & IXGBE_ETS_NUM_SENSORS_MASK); | |
3923 | if (num_sensors > IXGBE_MAX_SENSORS) | |
3924 | num_sensors = IXGBE_MAX_SENSORS; | |
3925 | ||
3926 | for (i = 0; i < num_sensors; i++) { | |
3927 | u8 sensor_index; | |
3928 | u8 sensor_location; | |
3929 | ||
3930 | status = hw->eeprom.ops.read(hw, (ets_offset + 1 + i), | |
3931 | &ets_sensor); | |
3932 | if (status) | |
e90dd264 | 3933 | return status; |
e1ea9158 DS |
3934 | |
3935 | sensor_index = ((ets_sensor & IXGBE_ETS_DATA_INDEX_MASK) >> | |
3936 | IXGBE_ETS_DATA_INDEX_SHIFT); | |
3937 | sensor_location = ((ets_sensor & IXGBE_ETS_DATA_LOC_MASK) >> | |
3938 | IXGBE_ETS_DATA_LOC_SHIFT); | |
3939 | ||
3940 | if (sensor_location != 0) { | |
3941 | status = hw->phy.ops.read_i2c_byte(hw, | |
3942 | ixgbe_emc_temp_data[sensor_index], | |
3943 | IXGBE_I2C_THERMAL_SENSOR_ADDR, | |
3944 | &data->sensor[i].temp); | |
3945 | if (status) | |
e90dd264 | 3946 | return status; |
e1ea9158 DS |
3947 | } |
3948 | } | |
e90dd264 MR |
3949 | |
3950 | return 0; | |
e1ea9158 DS |
3951 | } |
3952 | ||
3953 | /** | |
3954 | * ixgbe_init_thermal_sensor_thresh_generic - Inits thermal sensor thresholds | |
3955 | * @hw: pointer to hardware structure | |
3956 | * | |
3957 | * Inits the thermal sensor thresholds according to the NVM map | |
3958 | * and save off the threshold and location values into mac.thermal_sensor_data | |
3959 | **/ | |
3960 | s32 ixgbe_init_thermal_sensor_thresh_generic(struct ixgbe_hw *hw) | |
3961 | { | |
e90dd264 | 3962 | s32 status; |
e1ea9158 DS |
3963 | u16 ets_offset; |
3964 | u16 ets_cfg; | |
3965 | u16 ets_sensor; | |
3966 | u8 low_thresh_delta; | |
3967 | u8 num_sensors; | |
3968 | u8 therm_limit; | |
3969 | u8 i; | |
3970 | struct ixgbe_thermal_sensor_data *data = &hw->mac.thermal_sensor_data; | |
3971 | ||
3972 | memset(data, 0, sizeof(struct ixgbe_thermal_sensor_data)); | |
3973 | ||
3ca8bc6d | 3974 | /* Only support thermal sensors attached to physical port 0 */ |
e90dd264 MR |
3975 | if ((IXGBE_READ_REG(hw, IXGBE_STATUS) & IXGBE_STATUS_LAN_ID_1)) |
3976 | return IXGBE_NOT_IMPLEMENTED; | |
e1ea9158 DS |
3977 | |
3978 | status = ixgbe_get_ets_data(hw, &ets_cfg, &ets_offset); | |
3979 | if (status) | |
e90dd264 | 3980 | return status; |
e1ea9158 DS |
3981 | |
3982 | low_thresh_delta = ((ets_cfg & IXGBE_ETS_LTHRES_DELTA_MASK) >> | |
3983 | IXGBE_ETS_LTHRES_DELTA_SHIFT); | |
3984 | num_sensors = (ets_cfg & IXGBE_ETS_NUM_SENSORS_MASK); | |
3985 | if (num_sensors > IXGBE_MAX_SENSORS) | |
3986 | num_sensors = IXGBE_MAX_SENSORS; | |
3987 | ||
3988 | for (i = 0; i < num_sensors; i++) { | |
3989 | u8 sensor_index; | |
3990 | u8 sensor_location; | |
3991 | ||
be0c27b4 MR |
3992 | if (hw->eeprom.ops.read(hw, ets_offset + 1 + i, &ets_sensor)) { |
3993 | hw_err(hw, "eeprom read at offset %d failed\n", | |
3994 | ets_offset + 1 + i); | |
3995 | continue; | |
3996 | } | |
e1ea9158 DS |
3997 | sensor_index = ((ets_sensor & IXGBE_ETS_DATA_INDEX_MASK) >> |
3998 | IXGBE_ETS_DATA_INDEX_SHIFT); | |
3999 | sensor_location = ((ets_sensor & IXGBE_ETS_DATA_LOC_MASK) >> | |
4000 | IXGBE_ETS_DATA_LOC_SHIFT); | |
4001 | therm_limit = ets_sensor & IXGBE_ETS_DATA_HTHRESH_MASK; | |
4002 | ||
4003 | hw->phy.ops.write_i2c_byte(hw, | |
4004 | ixgbe_emc_therm_limit[sensor_index], | |
4005 | IXGBE_I2C_THERMAL_SENSOR_ADDR, therm_limit); | |
4006 | ||
4007 | if (sensor_location == 0) | |
4008 | continue; | |
4009 | ||
4010 | data->sensor[i].location = sensor_location; | |
4011 | data->sensor[i].caution_thresh = therm_limit; | |
4012 | data->sensor[i].max_op_thresh = therm_limit - low_thresh_delta; | |
4013 | } | |
e90dd264 MR |
4014 | |
4015 | return 0; | |
e1ea9158 DS |
4016 | } |
4017 | ||
73834aec PG |
4018 | /** |
4019 | * ixgbe_get_orom_version - Return option ROM from EEPROM | |
4020 | * | |
4021 | * @hw: pointer to hardware structure | |
4022 | * @nvm_ver: pointer to output structure | |
4023 | * | |
4024 | * if valid option ROM version, nvm_ver->or_valid set to true | |
4025 | * else nvm_ver->or_valid is false. | |
4026 | **/ | |
4027 | void ixgbe_get_orom_version(struct ixgbe_hw *hw, | |
4028 | struct ixgbe_nvm_version *nvm_ver) | |
4029 | { | |
4030 | u16 offset, eeprom_cfg_blkh, eeprom_cfg_blkl; | |
4031 | ||
4032 | nvm_ver->or_valid = false; | |
4033 | /* Option Rom may or may not be present. Start with pointer */ | |
4034 | hw->eeprom.ops.read(hw, NVM_OROM_OFFSET, &offset); | |
4035 | ||
4036 | /* make sure offset is valid */ | |
4037 | if (offset == 0x0 || offset == NVM_INVALID_PTR) | |
4038 | return; | |
4039 | ||
4040 | hw->eeprom.ops.read(hw, offset + NVM_OROM_BLK_HI, &eeprom_cfg_blkh); | |
4041 | hw->eeprom.ops.read(hw, offset + NVM_OROM_BLK_LOW, &eeprom_cfg_blkl); | |
4042 | ||
4043 | /* option rom exists and is valid */ | |
4044 | if ((eeprom_cfg_blkl | eeprom_cfg_blkh) == 0x0 || | |
4045 | eeprom_cfg_blkl == NVM_VER_INVALID || | |
4046 | eeprom_cfg_blkh == NVM_VER_INVALID) | |
4047 | return; | |
4048 | ||
4049 | nvm_ver->or_valid = true; | |
4050 | nvm_ver->or_major = eeprom_cfg_blkl >> NVM_OROM_SHIFT; | |
4051 | nvm_ver->or_build = (eeprom_cfg_blkl << NVM_OROM_SHIFT) | | |
4052 | (eeprom_cfg_blkh >> NVM_OROM_SHIFT); | |
4053 | nvm_ver->or_patch = eeprom_cfg_blkh & NVM_OROM_PATCH_MASK; | |
4054 | } | |
4055 | ||
4056 | /** | |
4057 | * ixgbe_get_oem_prod_version Etrack ID from EEPROM | |
4058 | * | |
4059 | * @hw: pointer to hardware structure | |
4060 | * @nvm_ver: pointer to output structure | |
4061 | * | |
4062 | * if valid OEM product version, nvm_ver->oem_valid set to true | |
4063 | * else nvm_ver->oem_valid is false. | |
4064 | **/ | |
4065 | void ixgbe_get_oem_prod_version(struct ixgbe_hw *hw, | |
4066 | struct ixgbe_nvm_version *nvm_ver) | |
4067 | { | |
4068 | u16 rel_num, prod_ver, mod_len, cap, offset; | |
4069 | ||
4070 | nvm_ver->oem_valid = false; | |
4071 | hw->eeprom.ops.read(hw, NVM_OEM_PROD_VER_PTR, &offset); | |
4072 | ||
4073 | /* Return is offset to OEM Product Version block is invalid */ | |
fd492228 | 4074 | if (offset == 0x0 || offset == NVM_INVALID_PTR) |
73834aec PG |
4075 | return; |
4076 | ||
4077 | /* Read product version block */ | |
4078 | hw->eeprom.ops.read(hw, offset, &mod_len); | |
4079 | hw->eeprom.ops.read(hw, offset + NVM_OEM_PROD_VER_CAP_OFF, &cap); | |
4080 | ||
4081 | /* Return if OEM product version block is invalid */ | |
4082 | if (mod_len != NVM_OEM_PROD_VER_MOD_LEN || | |
4083 | (cap & NVM_OEM_PROD_VER_CAP_MASK) != 0x0) | |
4084 | return; | |
4085 | ||
4086 | hw->eeprom.ops.read(hw, offset + NVM_OEM_PROD_VER_OFF_L, &prod_ver); | |
4087 | hw->eeprom.ops.read(hw, offset + NVM_OEM_PROD_VER_OFF_H, &rel_num); | |
4088 | ||
4089 | /* Return if version is invalid */ | |
4090 | if ((rel_num | prod_ver) == 0x0 || | |
4091 | rel_num == NVM_VER_INVALID || prod_ver == NVM_VER_INVALID) | |
4092 | return; | |
4093 | ||
4094 | nvm_ver->oem_major = prod_ver >> NVM_VER_SHIFT; | |
4095 | nvm_ver->oem_minor = prod_ver & NVM_VER_MASK; | |
4096 | nvm_ver->oem_release = rel_num; | |
4097 | nvm_ver->oem_valid = true; | |
4098 | } | |
4099 | ||
4100 | /** | |
4101 | * ixgbe_get_etk_id - Return Etrack ID from EEPROM | |
4102 | * | |
4103 | * @hw: pointer to hardware structure | |
4104 | * @nvm_ver: pointer to output structure | |
4105 | * | |
4106 | * word read errors will return 0xFFFF | |
4107 | **/ | |
4108 | void ixgbe_get_etk_id(struct ixgbe_hw *hw, | |
4109 | struct ixgbe_nvm_version *nvm_ver) | |
4110 | { | |
4111 | u16 etk_id_l, etk_id_h; | |
4112 | ||
4113 | if (hw->eeprom.ops.read(hw, NVM_ETK_OFF_LOW, &etk_id_l)) | |
4114 | etk_id_l = NVM_VER_INVALID; | |
4115 | if (hw->eeprom.ops.read(hw, NVM_ETK_OFF_HI, &etk_id_h)) | |
4116 | etk_id_h = NVM_VER_INVALID; | |
4117 | ||
4118 | /* The word order for the version format is determined by high order | |
4119 | * word bit 15. | |
4120 | */ | |
4121 | if ((etk_id_h & NVM_ETK_VALID) == 0) { | |
4122 | nvm_ver->etk_id = etk_id_h; | |
4123 | nvm_ver->etk_id |= (etk_id_l << NVM_ETK_SHIFT); | |
4124 | } else { | |
4125 | nvm_ver->etk_id = etk_id_l; | |
4126 | nvm_ver->etk_id |= (etk_id_h << NVM_ETK_SHIFT); | |
4127 | } | |
4128 | } | |
4129 | ||
1f9ac57c DS |
4130 | void ixgbe_disable_rx_generic(struct ixgbe_hw *hw) |
4131 | { | |
4132 | u32 rxctrl; | |
4133 | ||
4134 | rxctrl = IXGBE_READ_REG(hw, IXGBE_RXCTRL); | |
4135 | if (rxctrl & IXGBE_RXCTRL_RXEN) { | |
4136 | if (hw->mac.type != ixgbe_mac_82598EB) { | |
4137 | u32 pfdtxgswc; | |
4138 | ||
4139 | pfdtxgswc = IXGBE_READ_REG(hw, IXGBE_PFDTXGSWC); | |
4140 | if (pfdtxgswc & IXGBE_PFDTXGSWC_VT_LBEN) { | |
4141 | pfdtxgswc &= ~IXGBE_PFDTXGSWC_VT_LBEN; | |
4142 | IXGBE_WRITE_REG(hw, IXGBE_PFDTXGSWC, pfdtxgswc); | |
4143 | hw->mac.set_lben = true; | |
4144 | } else { | |
4145 | hw->mac.set_lben = false; | |
4146 | } | |
4147 | } | |
4148 | rxctrl &= ~IXGBE_RXCTRL_RXEN; | |
4149 | IXGBE_WRITE_REG(hw, IXGBE_RXCTRL, rxctrl); | |
4150 | } | |
4151 | } | |
4152 | ||
4153 | void ixgbe_enable_rx_generic(struct ixgbe_hw *hw) | |
4154 | { | |
4155 | u32 rxctrl; | |
4156 | ||
4157 | rxctrl = IXGBE_READ_REG(hw, IXGBE_RXCTRL); | |
4158 | IXGBE_WRITE_REG(hw, IXGBE_RXCTRL, (rxctrl | IXGBE_RXCTRL_RXEN)); | |
4159 | ||
4160 | if (hw->mac.type != ixgbe_mac_82598EB) { | |
4161 | if (hw->mac.set_lben) { | |
4162 | u32 pfdtxgswc; | |
4163 | ||
4164 | pfdtxgswc = IXGBE_READ_REG(hw, IXGBE_PFDTXGSWC); | |
4165 | pfdtxgswc |= IXGBE_PFDTXGSWC_VT_LBEN; | |
4166 | IXGBE_WRITE_REG(hw, IXGBE_PFDTXGSWC, pfdtxgswc); | |
4167 | hw->mac.set_lben = false; | |
4168 | } | |
4169 | } | |
4170 | } | |
bd8069ac DS |
4171 | |
4172 | /** ixgbe_mng_present - returns true when management capability is present | |
4173 | * @hw: pointer to hardware structure | |
4174 | **/ | |
4175 | bool ixgbe_mng_present(struct ixgbe_hw *hw) | |
4176 | { | |
4177 | u32 fwsm; | |
4178 | ||
4179 | if (hw->mac.type < ixgbe_mac_82599EB) | |
4180 | return false; | |
4181 | ||
4182 | fwsm = IXGBE_READ_REG(hw, IXGBE_FWSM(hw)); | |
c3aec05d ET |
4183 | |
4184 | return !!(fwsm & IXGBE_FWSM_FW_MODE_PT); | |
bd8069ac | 4185 | } |
6d373a1b MR |
4186 | |
4187 | /** | |
4188 | * ixgbe_setup_mac_link_multispeed_fiber - Set MAC link speed | |
4189 | * @hw: pointer to hardware structure | |
4190 | * @speed: new link speed | |
4191 | * @autoneg_wait_to_complete: true when waiting for completion is needed | |
4192 | * | |
4193 | * Set the link speed in the MAC and/or PHY register and restarts link. | |
4194 | */ | |
4195 | s32 ixgbe_setup_mac_link_multispeed_fiber(struct ixgbe_hw *hw, | |
4196 | ixgbe_link_speed speed, | |
4197 | bool autoneg_wait_to_complete) | |
4198 | { | |
4199 | ixgbe_link_speed link_speed = IXGBE_LINK_SPEED_UNKNOWN; | |
4200 | ixgbe_link_speed highest_link_speed = IXGBE_LINK_SPEED_UNKNOWN; | |
4201 | s32 status = 0; | |
4202 | u32 speedcnt = 0; | |
4203 | u32 i = 0; | |
4204 | bool autoneg, link_up = false; | |
4205 | ||
4206 | /* Mask off requested but non-supported speeds */ | |
4207 | status = hw->mac.ops.get_link_capabilities(hw, &link_speed, &autoneg); | |
4208 | if (status) | |
4209 | return status; | |
4210 | ||
4211 | speed &= link_speed; | |
4212 | ||
4213 | /* Try each speed one by one, highest priority first. We do this in | |
4214 | * software because 10Gb fiber doesn't support speed autonegotiation. | |
4215 | */ | |
4216 | if (speed & IXGBE_LINK_SPEED_10GB_FULL) { | |
4217 | speedcnt++; | |
4218 | highest_link_speed = IXGBE_LINK_SPEED_10GB_FULL; | |
4219 | ||
6d373a1b MR |
4220 | /* Set the module link speed */ |
4221 | switch (hw->phy.media_type) { | |
4222 | case ixgbe_media_type_fiber: | |
4223 | hw->mac.ops.set_rate_select_speed(hw, | |
4224 | IXGBE_LINK_SPEED_10GB_FULL); | |
4225 | break; | |
4226 | case ixgbe_media_type_fiber_qsfp: | |
4227 | /* QSFP module automatically detects MAC link speed */ | |
4228 | break; | |
4229 | default: | |
4230 | hw_dbg(hw, "Unexpected media type\n"); | |
4231 | break; | |
4232 | } | |
4233 | ||
4234 | /* Allow module to change analog characteristics (1G->10G) */ | |
4235 | msleep(40); | |
4236 | ||
4237 | status = hw->mac.ops.setup_mac_link(hw, | |
4238 | IXGBE_LINK_SPEED_10GB_FULL, | |
4239 | autoneg_wait_to_complete); | |
4240 | if (status) | |
4241 | return status; | |
4242 | ||
4243 | /* Flap the Tx laser if it has not already been done */ | |
4244 | if (hw->mac.ops.flap_tx_laser) | |
4245 | hw->mac.ops.flap_tx_laser(hw); | |
4246 | ||
4247 | /* Wait for the controller to acquire link. Per IEEE 802.3ap, | |
4248 | * Section 73.10.2, we may have to wait up to 500ms if KR is | |
4249 | * attempted. 82599 uses the same timing for 10g SFI. | |
4250 | */ | |
4251 | for (i = 0; i < 5; i++) { | |
4252 | /* Wait for the link partner to also set speed */ | |
4253 | msleep(100); | |
4254 | ||
4255 | /* If we have link, just jump out */ | |
4256 | status = hw->mac.ops.check_link(hw, &link_speed, | |
4257 | &link_up, false); | |
4258 | if (status) | |
4259 | return status; | |
4260 | ||
4261 | if (link_up) | |
4262 | goto out; | |
4263 | } | |
4264 | } | |
4265 | ||
4266 | if (speed & IXGBE_LINK_SPEED_1GB_FULL) { | |
4267 | speedcnt++; | |
4268 | if (highest_link_speed == IXGBE_LINK_SPEED_UNKNOWN) | |
4269 | highest_link_speed = IXGBE_LINK_SPEED_1GB_FULL; | |
4270 | ||
6d373a1b MR |
4271 | /* Set the module link speed */ |
4272 | switch (hw->phy.media_type) { | |
4273 | case ixgbe_media_type_fiber: | |
4274 | hw->mac.ops.set_rate_select_speed(hw, | |
4275 | IXGBE_LINK_SPEED_1GB_FULL); | |
4276 | break; | |
4277 | case ixgbe_media_type_fiber_qsfp: | |
4278 | /* QSFP module automatically detects link speed */ | |
4279 | break; | |
4280 | default: | |
4281 | hw_dbg(hw, "Unexpected media type\n"); | |
4282 | break; | |
4283 | } | |
4284 | ||
4285 | /* Allow module to change analog characteristics (10G->1G) */ | |
4286 | msleep(40); | |
4287 | ||
4288 | status = hw->mac.ops.setup_mac_link(hw, | |
4289 | IXGBE_LINK_SPEED_1GB_FULL, | |
4290 | autoneg_wait_to_complete); | |
4291 | if (status) | |
4292 | return status; | |
4293 | ||
4294 | /* Flap the Tx laser if it has not already been done */ | |
4295 | if (hw->mac.ops.flap_tx_laser) | |
4296 | hw->mac.ops.flap_tx_laser(hw); | |
4297 | ||
4298 | /* Wait for the link partner to also set speed */ | |
4299 | msleep(100); | |
4300 | ||
4301 | /* If we have link, just jump out */ | |
4302 | status = hw->mac.ops.check_link(hw, &link_speed, &link_up, | |
4303 | false); | |
4304 | if (status) | |
4305 | return status; | |
4306 | ||
4307 | if (link_up) | |
4308 | goto out; | |
4309 | } | |
4310 | ||
4311 | /* We didn't get link. Configure back to the highest speed we tried, | |
4312 | * (if there was more than one). We call ourselves back with just the | |
4313 | * single highest speed that the user requested. | |
4314 | */ | |
4315 | if (speedcnt > 1) | |
4316 | status = ixgbe_setup_mac_link_multispeed_fiber(hw, | |
4317 | highest_link_speed, | |
4318 | autoneg_wait_to_complete); | |
4319 | ||
4320 | out: | |
4321 | /* Set autoneg_advertised value based on input link speed */ | |
4322 | hw->phy.autoneg_advertised = 0; | |
4323 | ||
4324 | if (speed & IXGBE_LINK_SPEED_10GB_FULL) | |
4325 | hw->phy.autoneg_advertised |= IXGBE_LINK_SPEED_10GB_FULL; | |
4326 | ||
4327 | if (speed & IXGBE_LINK_SPEED_1GB_FULL) | |
4328 | hw->phy.autoneg_advertised |= IXGBE_LINK_SPEED_1GB_FULL; | |
4329 | ||
4330 | return status; | |
4331 | } | |
4332 | ||
4333 | /** | |
4334 | * ixgbe_set_soft_rate_select_speed - Set module link speed | |
4335 | * @hw: pointer to hardware structure | |
4336 | * @speed: link speed to set | |
4337 | * | |
4338 | * Set module link speed via the soft rate select. | |
4339 | */ | |
4340 | void ixgbe_set_soft_rate_select_speed(struct ixgbe_hw *hw, | |
4341 | ixgbe_link_speed speed) | |
4342 | { | |
4343 | s32 status; | |
4344 | u8 rs, eeprom_data; | |
4345 | ||
4346 | switch (speed) { | |
4347 | case IXGBE_LINK_SPEED_10GB_FULL: | |
4348 | /* one bit mask same as setting on */ | |
4349 | rs = IXGBE_SFF_SOFT_RS_SELECT_10G; | |
4350 | break; | |
4351 | case IXGBE_LINK_SPEED_1GB_FULL: | |
4352 | rs = IXGBE_SFF_SOFT_RS_SELECT_1G; | |
4353 | break; | |
4354 | default: | |
4355 | hw_dbg(hw, "Invalid fixed module speed\n"); | |
4356 | return; | |
4357 | } | |
4358 | ||
4359 | /* Set RS0 */ | |
4360 | status = hw->phy.ops.read_i2c_byte(hw, IXGBE_SFF_SFF_8472_OSCB, | |
4361 | IXGBE_I2C_EEPROM_DEV_ADDR2, | |
4362 | &eeprom_data); | |
4363 | if (status) { | |
4364 | hw_dbg(hw, "Failed to read Rx Rate Select RS0\n"); | |
4365 | return; | |
4366 | } | |
4367 | ||
4368 | eeprom_data = (eeprom_data & ~IXGBE_SFF_SOFT_RS_SELECT_MASK) | rs; | |
4369 | ||
4370 | status = hw->phy.ops.write_i2c_byte(hw, IXGBE_SFF_SFF_8472_OSCB, | |
4371 | IXGBE_I2C_EEPROM_DEV_ADDR2, | |
4372 | eeprom_data); | |
4373 | if (status) { | |
4374 | hw_dbg(hw, "Failed to write Rx Rate Select RS0\n"); | |
4375 | return; | |
4376 | } | |
3ce5cb75 ET |
4377 | |
4378 | /* Set RS1 */ | |
4379 | status = hw->phy.ops.read_i2c_byte(hw, IXGBE_SFF_SFF_8472_ESCB, | |
4380 | IXGBE_I2C_EEPROM_DEV_ADDR2, | |
4381 | &eeprom_data); | |
4382 | if (status) { | |
4383 | hw_dbg(hw, "Failed to read Rx Rate Select RS1\n"); | |
4384 | return; | |
4385 | } | |
4386 | ||
4387 | eeprom_data = (eeprom_data & ~IXGBE_SFF_SOFT_RS_SELECT_MASK) | rs; | |
4388 | ||
4389 | status = hw->phy.ops.write_i2c_byte(hw, IXGBE_SFF_SFF_8472_ESCB, | |
4390 | IXGBE_I2C_EEPROM_DEV_ADDR2, | |
4391 | eeprom_data); | |
4392 | if (status) { | |
4393 | hw_dbg(hw, "Failed to write Rx Rate Select RS1\n"); | |
4394 | return; | |
4395 | } | |
6d373a1b | 4396 | } |