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9a799d71 AK |
1 | /******************************************************************************* |
2 | ||
3 | Intel 10 Gigabit PCI Express Linux driver | |
a52055e0 | 4 | Copyright(c) 1999 - 2011 Intel Corporation. |
9a799d71 AK |
5 | |
6 | This program is free software; you can redistribute it and/or modify it | |
7 | under the terms and conditions of the GNU General Public License, | |
8 | version 2, as published by the Free Software Foundation. | |
9 | ||
10 | This program is distributed in the hope it will be useful, but WITHOUT | |
11 | ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
12 | FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
13 | more details. | |
14 | ||
15 | You should have received a copy of the GNU General Public License along with | |
16 | this program; if not, write to the Free Software Foundation, Inc., | |
17 | 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA. | |
18 | ||
19 | The full GNU General Public License is included in this distribution in | |
20 | the file called "COPYING". | |
21 | ||
22 | Contact Information: | |
9a799d71 AK |
23 | e1000-devel Mailing List <e1000-devel@lists.sourceforge.net> |
24 | Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 | |
25 | ||
26 | *******************************************************************************/ | |
27 | ||
28 | #include <linux/pci.h> | |
29 | #include <linux/delay.h> | |
30 | #include <linux/sched.h> | |
ccffad25 | 31 | #include <linux/netdevice.h> |
9a799d71 | 32 | |
11afc1b1 | 33 | #include "ixgbe.h" |
9a799d71 AK |
34 | #include "ixgbe_common.h" |
35 | #include "ixgbe_phy.h" | |
36 | ||
c44ade9e | 37 | static s32 ixgbe_acquire_eeprom(struct ixgbe_hw *hw); |
9a799d71 AK |
38 | static s32 ixgbe_get_eeprom_semaphore(struct ixgbe_hw *hw); |
39 | static void ixgbe_release_eeprom_semaphore(struct ixgbe_hw *hw); | |
c44ade9e JB |
40 | static s32 ixgbe_ready_eeprom(struct ixgbe_hw *hw); |
41 | static void ixgbe_standby_eeprom(struct ixgbe_hw *hw); | |
42 | static void ixgbe_shift_out_eeprom_bits(struct ixgbe_hw *hw, u16 data, | |
43 | u16 count); | |
44 | static u16 ixgbe_shift_in_eeprom_bits(struct ixgbe_hw *hw, u16 count); | |
45 | static void ixgbe_raise_eeprom_clk(struct ixgbe_hw *hw, u32 *eec); | |
46 | static void ixgbe_lower_eeprom_clk(struct ixgbe_hw *hw, u32 *eec); | |
47 | static void ixgbe_release_eeprom(struct ixgbe_hw *hw); | |
9a799d71 | 48 | |
9a799d71 | 49 | static s32 ixgbe_mta_vector(struct ixgbe_hw *hw, u8 *mc_addr); |
0b0c2b31 ET |
50 | static s32 ixgbe_fc_autoneg_fiber(struct ixgbe_hw *hw); |
51 | static s32 ixgbe_fc_autoneg_backplane(struct ixgbe_hw *hw); | |
52 | static s32 ixgbe_fc_autoneg_copper(struct ixgbe_hw *hw); | |
53 | static s32 ixgbe_device_supports_autoneg_fc(struct ixgbe_hw *hw); | |
54 | static s32 ixgbe_negotiate_fc(struct ixgbe_hw *hw, u32 adv_reg, u32 lp_reg, | |
55 | u32 adv_sym, u32 adv_asm, u32 lp_sym, u32 lp_asm); | |
7b25cdba | 56 | static s32 ixgbe_setup_fc(struct ixgbe_hw *hw, s32 packetbuf_num); |
9a799d71 AK |
57 | |
58 | /** | |
c44ade9e | 59 | * ixgbe_start_hw_generic - Prepare hardware for Tx/Rx |
9a799d71 AK |
60 | * @hw: pointer to hardware structure |
61 | * | |
62 | * Starts the hardware by filling the bus info structure and media type, clears | |
63 | * all on chip counters, initializes receive address registers, multicast | |
64 | * table, VLAN filter table, calls routine to set up link and flow control | |
65 | * settings, and leaves transmit and receive units disabled and uninitialized | |
66 | **/ | |
c44ade9e | 67 | s32 ixgbe_start_hw_generic(struct ixgbe_hw *hw) |
9a799d71 AK |
68 | { |
69 | u32 ctrl_ext; | |
70 | ||
71 | /* Set the media type */ | |
72 | hw->phy.media_type = hw->mac.ops.get_media_type(hw); | |
73 | ||
74 | /* Identify the PHY */ | |
c44ade9e | 75 | hw->phy.ops.identify(hw); |
9a799d71 | 76 | |
9a799d71 | 77 | /* Clear the VLAN filter table */ |
c44ade9e | 78 | hw->mac.ops.clear_vfta(hw); |
9a799d71 | 79 | |
9a799d71 | 80 | /* Clear statistics registers */ |
c44ade9e | 81 | hw->mac.ops.clear_hw_cntrs(hw); |
9a799d71 AK |
82 | |
83 | /* Set No Snoop Disable */ | |
84 | ctrl_ext = IXGBE_READ_REG(hw, IXGBE_CTRL_EXT); | |
85 | ctrl_ext |= IXGBE_CTRL_EXT_NS_DIS; | |
86 | IXGBE_WRITE_REG(hw, IXGBE_CTRL_EXT, ctrl_ext); | |
3957d63d | 87 | IXGBE_WRITE_FLUSH(hw); |
9a799d71 | 88 | |
620fa036 MC |
89 | /* Setup flow control */ |
90 | ixgbe_setup_fc(hw, 0); | |
91 | ||
9a799d71 AK |
92 | /* Clear adapter stopped flag */ |
93 | hw->adapter_stopped = false; | |
94 | ||
95 | return 0; | |
96 | } | |
97 | ||
98 | /** | |
c44ade9e | 99 | * ixgbe_init_hw_generic - Generic hardware initialization |
9a799d71 AK |
100 | * @hw: pointer to hardware structure |
101 | * | |
c44ade9e | 102 | * Initialize the hardware by resetting the hardware, filling the bus info |
9a799d71 AK |
103 | * structure and media type, clears all on chip counters, initializes receive |
104 | * address registers, multicast table, VLAN filter table, calls routine to set | |
105 | * up link and flow control settings, and leaves transmit and receive units | |
106 | * disabled and uninitialized | |
107 | **/ | |
c44ade9e | 108 | s32 ixgbe_init_hw_generic(struct ixgbe_hw *hw) |
9a799d71 | 109 | { |
794caeb2 PWJ |
110 | s32 status; |
111 | ||
9a799d71 | 112 | /* Reset the hardware */ |
794caeb2 | 113 | status = hw->mac.ops.reset_hw(hw); |
9a799d71 | 114 | |
794caeb2 PWJ |
115 | if (status == 0) { |
116 | /* Start the HW */ | |
117 | status = hw->mac.ops.start_hw(hw); | |
118 | } | |
9a799d71 | 119 | |
794caeb2 | 120 | return status; |
9a799d71 AK |
121 | } |
122 | ||
123 | /** | |
c44ade9e | 124 | * ixgbe_clear_hw_cntrs_generic - Generic clear hardware counters |
9a799d71 AK |
125 | * @hw: pointer to hardware structure |
126 | * | |
127 | * Clears all hardware statistics counters by reading them from the hardware | |
128 | * Statistics counters are clear on read. | |
129 | **/ | |
c44ade9e | 130 | s32 ixgbe_clear_hw_cntrs_generic(struct ixgbe_hw *hw) |
9a799d71 AK |
131 | { |
132 | u16 i = 0; | |
133 | ||
134 | IXGBE_READ_REG(hw, IXGBE_CRCERRS); | |
135 | IXGBE_READ_REG(hw, IXGBE_ILLERRC); | |
136 | IXGBE_READ_REG(hw, IXGBE_ERRBC); | |
137 | IXGBE_READ_REG(hw, IXGBE_MSPDC); | |
138 | for (i = 0; i < 8; i++) | |
139 | IXGBE_READ_REG(hw, IXGBE_MPC(i)); | |
140 | ||
141 | IXGBE_READ_REG(hw, IXGBE_MLFC); | |
142 | IXGBE_READ_REG(hw, IXGBE_MRFC); | |
143 | IXGBE_READ_REG(hw, IXGBE_RLEC); | |
144 | IXGBE_READ_REG(hw, IXGBE_LXONTXC); | |
9a799d71 | 145 | IXGBE_READ_REG(hw, IXGBE_LXOFFTXC); |
667c7565 ET |
146 | if (hw->mac.type >= ixgbe_mac_82599EB) { |
147 | IXGBE_READ_REG(hw, IXGBE_LXONRXCNT); | |
148 | IXGBE_READ_REG(hw, IXGBE_LXOFFRXCNT); | |
149 | } else { | |
150 | IXGBE_READ_REG(hw, IXGBE_LXONRXC); | |
151 | IXGBE_READ_REG(hw, IXGBE_LXOFFRXC); | |
152 | } | |
9a799d71 AK |
153 | |
154 | for (i = 0; i < 8; i++) { | |
155 | IXGBE_READ_REG(hw, IXGBE_PXONTXC(i)); | |
9a799d71 | 156 | IXGBE_READ_REG(hw, IXGBE_PXOFFTXC(i)); |
667c7565 ET |
157 | if (hw->mac.type >= ixgbe_mac_82599EB) { |
158 | IXGBE_READ_REG(hw, IXGBE_PXONRXCNT(i)); | |
159 | IXGBE_READ_REG(hw, IXGBE_PXOFFRXCNT(i)); | |
160 | } else { | |
161 | IXGBE_READ_REG(hw, IXGBE_PXONRXC(i)); | |
162 | IXGBE_READ_REG(hw, IXGBE_PXOFFRXC(i)); | |
163 | } | |
9a799d71 | 164 | } |
667c7565 ET |
165 | if (hw->mac.type >= ixgbe_mac_82599EB) |
166 | for (i = 0; i < 8; i++) | |
167 | IXGBE_READ_REG(hw, IXGBE_PXON2OFFCNT(i)); | |
9a799d71 AK |
168 | IXGBE_READ_REG(hw, IXGBE_PRC64); |
169 | IXGBE_READ_REG(hw, IXGBE_PRC127); | |
170 | IXGBE_READ_REG(hw, IXGBE_PRC255); | |
171 | IXGBE_READ_REG(hw, IXGBE_PRC511); | |
172 | IXGBE_READ_REG(hw, IXGBE_PRC1023); | |
173 | IXGBE_READ_REG(hw, IXGBE_PRC1522); | |
174 | IXGBE_READ_REG(hw, IXGBE_GPRC); | |
175 | IXGBE_READ_REG(hw, IXGBE_BPRC); | |
176 | IXGBE_READ_REG(hw, IXGBE_MPRC); | |
177 | IXGBE_READ_REG(hw, IXGBE_GPTC); | |
178 | IXGBE_READ_REG(hw, IXGBE_GORCL); | |
179 | IXGBE_READ_REG(hw, IXGBE_GORCH); | |
180 | IXGBE_READ_REG(hw, IXGBE_GOTCL); | |
181 | IXGBE_READ_REG(hw, IXGBE_GOTCH); | |
182 | for (i = 0; i < 8; i++) | |
183 | IXGBE_READ_REG(hw, IXGBE_RNBC(i)); | |
184 | IXGBE_READ_REG(hw, IXGBE_RUC); | |
185 | IXGBE_READ_REG(hw, IXGBE_RFC); | |
186 | IXGBE_READ_REG(hw, IXGBE_ROC); | |
187 | IXGBE_READ_REG(hw, IXGBE_RJC); | |
188 | IXGBE_READ_REG(hw, IXGBE_MNGPRC); | |
189 | IXGBE_READ_REG(hw, IXGBE_MNGPDC); | |
190 | IXGBE_READ_REG(hw, IXGBE_MNGPTC); | |
191 | IXGBE_READ_REG(hw, IXGBE_TORL); | |
192 | IXGBE_READ_REG(hw, IXGBE_TORH); | |
193 | IXGBE_READ_REG(hw, IXGBE_TPR); | |
194 | IXGBE_READ_REG(hw, IXGBE_TPT); | |
195 | IXGBE_READ_REG(hw, IXGBE_PTC64); | |
196 | IXGBE_READ_REG(hw, IXGBE_PTC127); | |
197 | IXGBE_READ_REG(hw, IXGBE_PTC255); | |
198 | IXGBE_READ_REG(hw, IXGBE_PTC511); | |
199 | IXGBE_READ_REG(hw, IXGBE_PTC1023); | |
200 | IXGBE_READ_REG(hw, IXGBE_PTC1522); | |
201 | IXGBE_READ_REG(hw, IXGBE_MPTC); | |
202 | IXGBE_READ_REG(hw, IXGBE_BPTC); | |
203 | for (i = 0; i < 16; i++) { | |
204 | IXGBE_READ_REG(hw, IXGBE_QPRC(i)); | |
9a799d71 | 205 | IXGBE_READ_REG(hw, IXGBE_QPTC(i)); |
667c7565 ET |
206 | if (hw->mac.type >= ixgbe_mac_82599EB) { |
207 | IXGBE_READ_REG(hw, IXGBE_QBRC_L(i)); | |
208 | IXGBE_READ_REG(hw, IXGBE_QBRC_H(i)); | |
209 | IXGBE_READ_REG(hw, IXGBE_QBTC_L(i)); | |
210 | IXGBE_READ_REG(hw, IXGBE_QBTC_H(i)); | |
211 | IXGBE_READ_REG(hw, IXGBE_QPRDC(i)); | |
212 | } else { | |
213 | IXGBE_READ_REG(hw, IXGBE_QBRC(i)); | |
214 | IXGBE_READ_REG(hw, IXGBE_QBTC(i)); | |
215 | } | |
9a799d71 AK |
216 | } |
217 | ||
a3aeea0e ET |
218 | if (hw->mac.type == ixgbe_mac_X540) { |
219 | if (hw->phy.id == 0) | |
220 | hw->phy.ops.identify(hw); | |
221 | hw->phy.ops.read_reg(hw, 0x3, IXGBE_PCRC8ECL, &i); | |
222 | hw->phy.ops.read_reg(hw, 0x3, IXGBE_PCRC8ECH, &i); | |
223 | hw->phy.ops.read_reg(hw, 0x3, IXGBE_LDPCECL, &i); | |
224 | hw->phy.ops.read_reg(hw, 0x3, IXGBE_LDPCECH, &i); | |
225 | } | |
226 | ||
9a799d71 AK |
227 | return 0; |
228 | } | |
229 | ||
230 | /** | |
289700db | 231 | * ixgbe_read_pba_string_generic - Reads part number string from EEPROM |
c44ade9e | 232 | * @hw: pointer to hardware structure |
289700db DS |
233 | * @pba_num: stores the part number string from the EEPROM |
234 | * @pba_num_size: part number string buffer length | |
c44ade9e | 235 | * |
289700db | 236 | * Reads the part number string from the EEPROM. |
c44ade9e | 237 | **/ |
289700db DS |
238 | s32 ixgbe_read_pba_string_generic(struct ixgbe_hw *hw, u8 *pba_num, |
239 | u32 pba_num_size) | |
c44ade9e JB |
240 | { |
241 | s32 ret_val; | |
242 | u16 data; | |
289700db DS |
243 | u16 pba_ptr; |
244 | u16 offset; | |
245 | u16 length; | |
246 | ||
247 | if (pba_num == NULL) { | |
248 | hw_dbg(hw, "PBA string buffer was null\n"); | |
249 | return IXGBE_ERR_INVALID_ARGUMENT; | |
250 | } | |
c44ade9e JB |
251 | |
252 | ret_val = hw->eeprom.ops.read(hw, IXGBE_PBANUM0_PTR, &data); | |
253 | if (ret_val) { | |
254 | hw_dbg(hw, "NVM Read Error\n"); | |
255 | return ret_val; | |
256 | } | |
c44ade9e | 257 | |
289700db | 258 | ret_val = hw->eeprom.ops.read(hw, IXGBE_PBANUM1_PTR, &pba_ptr); |
c44ade9e JB |
259 | if (ret_val) { |
260 | hw_dbg(hw, "NVM Read Error\n"); | |
261 | return ret_val; | |
262 | } | |
289700db DS |
263 | |
264 | /* | |
265 | * if data is not ptr guard the PBA must be in legacy format which | |
266 | * means pba_ptr is actually our second data word for the PBA number | |
267 | * and we can decode it into an ascii string | |
268 | */ | |
269 | if (data != IXGBE_PBANUM_PTR_GUARD) { | |
270 | hw_dbg(hw, "NVM PBA number is not stored as string\n"); | |
271 | ||
272 | /* we will need 11 characters to store the PBA */ | |
273 | if (pba_num_size < 11) { | |
274 | hw_dbg(hw, "PBA string buffer too small\n"); | |
275 | return IXGBE_ERR_NO_SPACE; | |
276 | } | |
277 | ||
278 | /* extract hex string from data and pba_ptr */ | |
279 | pba_num[0] = (data >> 12) & 0xF; | |
280 | pba_num[1] = (data >> 8) & 0xF; | |
281 | pba_num[2] = (data >> 4) & 0xF; | |
282 | pba_num[3] = data & 0xF; | |
283 | pba_num[4] = (pba_ptr >> 12) & 0xF; | |
284 | pba_num[5] = (pba_ptr >> 8) & 0xF; | |
285 | pba_num[6] = '-'; | |
286 | pba_num[7] = 0; | |
287 | pba_num[8] = (pba_ptr >> 4) & 0xF; | |
288 | pba_num[9] = pba_ptr & 0xF; | |
289 | ||
290 | /* put a null character on the end of our string */ | |
291 | pba_num[10] = '\0'; | |
292 | ||
293 | /* switch all the data but the '-' to hex char */ | |
294 | for (offset = 0; offset < 10; offset++) { | |
295 | if (pba_num[offset] < 0xA) | |
296 | pba_num[offset] += '0'; | |
297 | else if (pba_num[offset] < 0x10) | |
298 | pba_num[offset] += 'A' - 0xA; | |
299 | } | |
300 | ||
301 | return 0; | |
302 | } | |
303 | ||
304 | ret_val = hw->eeprom.ops.read(hw, pba_ptr, &length); | |
305 | if (ret_val) { | |
306 | hw_dbg(hw, "NVM Read Error\n"); | |
307 | return ret_val; | |
308 | } | |
309 | ||
310 | if (length == 0xFFFF || length == 0) { | |
311 | hw_dbg(hw, "NVM PBA number section invalid length\n"); | |
312 | return IXGBE_ERR_PBA_SECTION; | |
313 | } | |
314 | ||
315 | /* check if pba_num buffer is big enough */ | |
316 | if (pba_num_size < (((u32)length * 2) - 1)) { | |
317 | hw_dbg(hw, "PBA string buffer too small\n"); | |
318 | return IXGBE_ERR_NO_SPACE; | |
319 | } | |
320 | ||
321 | /* trim pba length from start of string */ | |
322 | pba_ptr++; | |
323 | length--; | |
324 | ||
325 | for (offset = 0; offset < length; offset++) { | |
326 | ret_val = hw->eeprom.ops.read(hw, pba_ptr + offset, &data); | |
327 | if (ret_val) { | |
328 | hw_dbg(hw, "NVM Read Error\n"); | |
329 | return ret_val; | |
330 | } | |
331 | pba_num[offset * 2] = (u8)(data >> 8); | |
332 | pba_num[(offset * 2) + 1] = (u8)(data & 0xFF); | |
333 | } | |
334 | pba_num[offset * 2] = '\0'; | |
c44ade9e JB |
335 | |
336 | return 0; | |
337 | } | |
338 | ||
339 | /** | |
340 | * ixgbe_get_mac_addr_generic - Generic get MAC address | |
9a799d71 AK |
341 | * @hw: pointer to hardware structure |
342 | * @mac_addr: Adapter MAC address | |
343 | * | |
344 | * Reads the adapter's MAC address from first Receive Address Register (RAR0) | |
345 | * A reset of the adapter must be performed prior to calling this function | |
346 | * in order for the MAC address to have been loaded from the EEPROM into RAR0 | |
347 | **/ | |
c44ade9e | 348 | s32 ixgbe_get_mac_addr_generic(struct ixgbe_hw *hw, u8 *mac_addr) |
9a799d71 AK |
349 | { |
350 | u32 rar_high; | |
351 | u32 rar_low; | |
352 | u16 i; | |
353 | ||
354 | rar_high = IXGBE_READ_REG(hw, IXGBE_RAH(0)); | |
355 | rar_low = IXGBE_READ_REG(hw, IXGBE_RAL(0)); | |
356 | ||
357 | for (i = 0; i < 4; i++) | |
358 | mac_addr[i] = (u8)(rar_low >> (i*8)); | |
359 | ||
360 | for (i = 0; i < 2; i++) | |
361 | mac_addr[i+4] = (u8)(rar_high >> (i*8)); | |
362 | ||
363 | return 0; | |
364 | } | |
365 | ||
11afc1b1 PW |
366 | /** |
367 | * ixgbe_get_bus_info_generic - Generic set PCI bus info | |
368 | * @hw: pointer to hardware structure | |
369 | * | |
370 | * Sets the PCI bus info (speed, width, type) within the ixgbe_hw structure | |
371 | **/ | |
372 | s32 ixgbe_get_bus_info_generic(struct ixgbe_hw *hw) | |
373 | { | |
374 | struct ixgbe_adapter *adapter = hw->back; | |
375 | struct ixgbe_mac_info *mac = &hw->mac; | |
376 | u16 link_status; | |
377 | ||
378 | hw->bus.type = ixgbe_bus_type_pci_express; | |
379 | ||
380 | /* Get the negotiated link width and speed from PCI config space */ | |
381 | pci_read_config_word(adapter->pdev, IXGBE_PCI_LINK_STATUS, | |
382 | &link_status); | |
383 | ||
384 | switch (link_status & IXGBE_PCI_LINK_WIDTH) { | |
385 | case IXGBE_PCI_LINK_WIDTH_1: | |
386 | hw->bus.width = ixgbe_bus_width_pcie_x1; | |
387 | break; | |
388 | case IXGBE_PCI_LINK_WIDTH_2: | |
389 | hw->bus.width = ixgbe_bus_width_pcie_x2; | |
390 | break; | |
391 | case IXGBE_PCI_LINK_WIDTH_4: | |
392 | hw->bus.width = ixgbe_bus_width_pcie_x4; | |
393 | break; | |
394 | case IXGBE_PCI_LINK_WIDTH_8: | |
395 | hw->bus.width = ixgbe_bus_width_pcie_x8; | |
396 | break; | |
397 | default: | |
398 | hw->bus.width = ixgbe_bus_width_unknown; | |
399 | break; | |
400 | } | |
401 | ||
402 | switch (link_status & IXGBE_PCI_LINK_SPEED) { | |
403 | case IXGBE_PCI_LINK_SPEED_2500: | |
404 | hw->bus.speed = ixgbe_bus_speed_2500; | |
405 | break; | |
406 | case IXGBE_PCI_LINK_SPEED_5000: | |
407 | hw->bus.speed = ixgbe_bus_speed_5000; | |
408 | break; | |
409 | default: | |
410 | hw->bus.speed = ixgbe_bus_speed_unknown; | |
411 | break; | |
412 | } | |
413 | ||
414 | mac->ops.set_lan_id(hw); | |
415 | ||
416 | return 0; | |
417 | } | |
418 | ||
419 | /** | |
420 | * ixgbe_set_lan_id_multi_port_pcie - Set LAN id for PCIe multiple port devices | |
421 | * @hw: pointer to the HW structure | |
422 | * | |
423 | * Determines the LAN function id by reading memory-mapped registers | |
424 | * and swaps the port value if requested. | |
425 | **/ | |
426 | void ixgbe_set_lan_id_multi_port_pcie(struct ixgbe_hw *hw) | |
427 | { | |
428 | struct ixgbe_bus_info *bus = &hw->bus; | |
429 | u32 reg; | |
430 | ||
431 | reg = IXGBE_READ_REG(hw, IXGBE_STATUS); | |
432 | bus->func = (reg & IXGBE_STATUS_LAN_ID) >> IXGBE_STATUS_LAN_ID_SHIFT; | |
433 | bus->lan_id = bus->func; | |
434 | ||
435 | /* check for a port swap */ | |
436 | reg = IXGBE_READ_REG(hw, IXGBE_FACTPS); | |
437 | if (reg & IXGBE_FACTPS_LFS) | |
438 | bus->func ^= 0x1; | |
439 | } | |
440 | ||
9a799d71 | 441 | /** |
c44ade9e | 442 | * ixgbe_stop_adapter_generic - Generic stop Tx/Rx units |
9a799d71 AK |
443 | * @hw: pointer to hardware structure |
444 | * | |
445 | * Sets the adapter_stopped flag within ixgbe_hw struct. Clears interrupts, | |
446 | * disables transmit and receive units. The adapter_stopped flag is used by | |
447 | * the shared code and drivers to determine if the adapter is in a stopped | |
448 | * state and should not touch the hardware. | |
449 | **/ | |
c44ade9e | 450 | s32 ixgbe_stop_adapter_generic(struct ixgbe_hw *hw) |
9a799d71 AK |
451 | { |
452 | u32 number_of_queues; | |
453 | u32 reg_val; | |
454 | u16 i; | |
455 | ||
456 | /* | |
457 | * Set the adapter_stopped flag so other driver functions stop touching | |
458 | * the hardware | |
459 | */ | |
460 | hw->adapter_stopped = true; | |
461 | ||
462 | /* Disable the receive unit */ | |
463 | reg_val = IXGBE_READ_REG(hw, IXGBE_RXCTRL); | |
464 | reg_val &= ~(IXGBE_RXCTRL_RXEN); | |
465 | IXGBE_WRITE_REG(hw, IXGBE_RXCTRL, reg_val); | |
c44ade9e | 466 | IXGBE_WRITE_FLUSH(hw); |
9a799d71 AK |
467 | msleep(2); |
468 | ||
469 | /* Clear interrupt mask to stop from interrupts being generated */ | |
470 | IXGBE_WRITE_REG(hw, IXGBE_EIMC, IXGBE_IRQ_CLEAR_MASK); | |
471 | ||
472 | /* Clear any pending interrupts */ | |
473 | IXGBE_READ_REG(hw, IXGBE_EICR); | |
474 | ||
475 | /* Disable the transmit unit. Each queue must be disabled. */ | |
c44ade9e | 476 | number_of_queues = hw->mac.max_tx_queues; |
9a799d71 AK |
477 | for (i = 0; i < number_of_queues; i++) { |
478 | reg_val = IXGBE_READ_REG(hw, IXGBE_TXDCTL(i)); | |
479 | if (reg_val & IXGBE_TXDCTL_ENABLE) { | |
480 | reg_val &= ~IXGBE_TXDCTL_ENABLE; | |
481 | IXGBE_WRITE_REG(hw, IXGBE_TXDCTL(i), reg_val); | |
482 | } | |
483 | } | |
484 | ||
c44ade9e JB |
485 | /* |
486 | * Prevent the PCI-E bus from from hanging by disabling PCI-E master | |
487 | * access and verify no pending requests | |
488 | */ | |
a4297dc2 | 489 | ixgbe_disable_pcie_master(hw); |
c44ade9e | 490 | |
9a799d71 AK |
491 | return 0; |
492 | } | |
493 | ||
494 | /** | |
c44ade9e | 495 | * ixgbe_led_on_generic - Turns on the software controllable LEDs. |
9a799d71 AK |
496 | * @hw: pointer to hardware structure |
497 | * @index: led number to turn on | |
498 | **/ | |
c44ade9e | 499 | s32 ixgbe_led_on_generic(struct ixgbe_hw *hw, u32 index) |
9a799d71 AK |
500 | { |
501 | u32 led_reg = IXGBE_READ_REG(hw, IXGBE_LEDCTL); | |
502 | ||
503 | /* To turn on the LED, set mode to ON. */ | |
504 | led_reg &= ~IXGBE_LED_MODE_MASK(index); | |
505 | led_reg |= IXGBE_LED_ON << IXGBE_LED_MODE_SHIFT(index); | |
506 | IXGBE_WRITE_REG(hw, IXGBE_LEDCTL, led_reg); | |
3957d63d | 507 | IXGBE_WRITE_FLUSH(hw); |
9a799d71 AK |
508 | |
509 | return 0; | |
510 | } | |
511 | ||
512 | /** | |
c44ade9e | 513 | * ixgbe_led_off_generic - Turns off the software controllable LEDs. |
9a799d71 AK |
514 | * @hw: pointer to hardware structure |
515 | * @index: led number to turn off | |
516 | **/ | |
c44ade9e | 517 | s32 ixgbe_led_off_generic(struct ixgbe_hw *hw, u32 index) |
9a799d71 AK |
518 | { |
519 | u32 led_reg = IXGBE_READ_REG(hw, IXGBE_LEDCTL); | |
520 | ||
521 | /* To turn off the LED, set mode to OFF. */ | |
522 | led_reg &= ~IXGBE_LED_MODE_MASK(index); | |
523 | led_reg |= IXGBE_LED_OFF << IXGBE_LED_MODE_SHIFT(index); | |
524 | IXGBE_WRITE_REG(hw, IXGBE_LEDCTL, led_reg); | |
3957d63d | 525 | IXGBE_WRITE_FLUSH(hw); |
9a799d71 AK |
526 | |
527 | return 0; | |
528 | } | |
529 | ||
9a799d71 | 530 | /** |
c44ade9e | 531 | * ixgbe_init_eeprom_params_generic - Initialize EEPROM params |
9a799d71 AK |
532 | * @hw: pointer to hardware structure |
533 | * | |
534 | * Initializes the EEPROM parameters ixgbe_eeprom_info within the | |
535 | * ixgbe_hw struct in order to set up EEPROM access. | |
536 | **/ | |
c44ade9e | 537 | s32 ixgbe_init_eeprom_params_generic(struct ixgbe_hw *hw) |
9a799d71 AK |
538 | { |
539 | struct ixgbe_eeprom_info *eeprom = &hw->eeprom; | |
540 | u32 eec; | |
541 | u16 eeprom_size; | |
542 | ||
543 | if (eeprom->type == ixgbe_eeprom_uninitialized) { | |
544 | eeprom->type = ixgbe_eeprom_none; | |
c44ade9e JB |
545 | /* Set default semaphore delay to 10ms which is a well |
546 | * tested value */ | |
547 | eeprom->semaphore_delay = 10; | |
9a799d71 AK |
548 | |
549 | /* | |
550 | * Check for EEPROM present first. | |
551 | * If not present leave as none | |
552 | */ | |
553 | eec = IXGBE_READ_REG(hw, IXGBE_EEC); | |
554 | if (eec & IXGBE_EEC_PRES) { | |
555 | eeprom->type = ixgbe_eeprom_spi; | |
556 | ||
557 | /* | |
558 | * SPI EEPROM is assumed here. This code would need to | |
559 | * change if a future EEPROM is not SPI. | |
560 | */ | |
561 | eeprom_size = (u16)((eec & IXGBE_EEC_SIZE) >> | |
562 | IXGBE_EEC_SIZE_SHIFT); | |
563 | eeprom->word_size = 1 << (eeprom_size + | |
564 | IXGBE_EEPROM_WORD_SIZE_SHIFT); | |
565 | } | |
566 | ||
567 | if (eec & IXGBE_EEC_ADDR_SIZE) | |
568 | eeprom->address_bits = 16; | |
569 | else | |
570 | eeprom->address_bits = 8; | |
571 | hw_dbg(hw, "Eeprom params: type = %d, size = %d, address bits: " | |
572 | "%d\n", eeprom->type, eeprom->word_size, | |
573 | eeprom->address_bits); | |
574 | } | |
575 | ||
576 | return 0; | |
577 | } | |
578 | ||
11afc1b1 PW |
579 | /** |
580 | * ixgbe_write_eeprom_generic - Writes 16 bit value to EEPROM | |
581 | * @hw: pointer to hardware structure | |
582 | * @offset: offset within the EEPROM to be written to | |
583 | * @data: 16 bit word to be written to the EEPROM | |
584 | * | |
585 | * If ixgbe_eeprom_update_checksum is not called after this function, the | |
586 | * EEPROM will most likely contain an invalid checksum. | |
587 | **/ | |
588 | s32 ixgbe_write_eeprom_generic(struct ixgbe_hw *hw, u16 offset, u16 data) | |
589 | { | |
590 | s32 status; | |
591 | u8 write_opcode = IXGBE_EEPROM_WRITE_OPCODE_SPI; | |
592 | ||
593 | hw->eeprom.ops.init_params(hw); | |
594 | ||
595 | if (offset >= hw->eeprom.word_size) { | |
596 | status = IXGBE_ERR_EEPROM; | |
597 | goto out; | |
598 | } | |
599 | ||
600 | /* Prepare the EEPROM for writing */ | |
601 | status = ixgbe_acquire_eeprom(hw); | |
602 | ||
603 | if (status == 0) { | |
604 | if (ixgbe_ready_eeprom(hw) != 0) { | |
605 | ixgbe_release_eeprom(hw); | |
606 | status = IXGBE_ERR_EEPROM; | |
607 | } | |
608 | } | |
609 | ||
610 | if (status == 0) { | |
611 | ixgbe_standby_eeprom(hw); | |
612 | ||
613 | /* Send the WRITE ENABLE command (8 bit opcode ) */ | |
614 | ixgbe_shift_out_eeprom_bits(hw, IXGBE_EEPROM_WREN_OPCODE_SPI, | |
615 | IXGBE_EEPROM_OPCODE_BITS); | |
616 | ||
617 | ixgbe_standby_eeprom(hw); | |
618 | ||
619 | /* | |
620 | * Some SPI eeproms use the 8th address bit embedded in the | |
621 | * opcode | |
622 | */ | |
623 | if ((hw->eeprom.address_bits == 8) && (offset >= 128)) | |
624 | write_opcode |= IXGBE_EEPROM_A8_OPCODE_SPI; | |
625 | ||
626 | /* Send the Write command (8-bit opcode + addr) */ | |
627 | ixgbe_shift_out_eeprom_bits(hw, write_opcode, | |
628 | IXGBE_EEPROM_OPCODE_BITS); | |
629 | ixgbe_shift_out_eeprom_bits(hw, (u16)(offset*2), | |
630 | hw->eeprom.address_bits); | |
631 | ||
632 | /* Send the data */ | |
633 | data = (data >> 8) | (data << 8); | |
634 | ixgbe_shift_out_eeprom_bits(hw, data, 16); | |
635 | ixgbe_standby_eeprom(hw); | |
636 | ||
11afc1b1 PW |
637 | /* Done with writing - release the EEPROM */ |
638 | ixgbe_release_eeprom(hw); | |
639 | } | |
640 | ||
641 | out: | |
642 | return status; | |
643 | } | |
644 | ||
9a799d71 | 645 | /** |
c44ade9e JB |
646 | * ixgbe_read_eeprom_bit_bang_generic - Read EEPROM word using bit-bang |
647 | * @hw: pointer to hardware structure | |
648 | * @offset: offset within the EEPROM to be read | |
649 | * @data: read 16 bit value from EEPROM | |
650 | * | |
651 | * Reads 16 bit value from EEPROM through bit-bang method | |
652 | **/ | |
653 | s32 ixgbe_read_eeprom_bit_bang_generic(struct ixgbe_hw *hw, u16 offset, | |
654 | u16 *data) | |
655 | { | |
656 | s32 status; | |
657 | u16 word_in; | |
658 | u8 read_opcode = IXGBE_EEPROM_READ_OPCODE_SPI; | |
659 | ||
660 | hw->eeprom.ops.init_params(hw); | |
661 | ||
662 | if (offset >= hw->eeprom.word_size) { | |
663 | status = IXGBE_ERR_EEPROM; | |
664 | goto out; | |
665 | } | |
666 | ||
667 | /* Prepare the EEPROM for reading */ | |
668 | status = ixgbe_acquire_eeprom(hw); | |
669 | ||
670 | if (status == 0) { | |
671 | if (ixgbe_ready_eeprom(hw) != 0) { | |
672 | ixgbe_release_eeprom(hw); | |
673 | status = IXGBE_ERR_EEPROM; | |
674 | } | |
675 | } | |
676 | ||
677 | if (status == 0) { | |
678 | ixgbe_standby_eeprom(hw); | |
679 | ||
680 | /* | |
681 | * Some SPI eeproms use the 8th address bit embedded in the | |
682 | * opcode | |
683 | */ | |
684 | if ((hw->eeprom.address_bits == 8) && (offset >= 128)) | |
685 | read_opcode |= IXGBE_EEPROM_A8_OPCODE_SPI; | |
686 | ||
687 | /* Send the READ command (opcode + addr) */ | |
688 | ixgbe_shift_out_eeprom_bits(hw, read_opcode, | |
689 | IXGBE_EEPROM_OPCODE_BITS); | |
690 | ixgbe_shift_out_eeprom_bits(hw, (u16)(offset*2), | |
691 | hw->eeprom.address_bits); | |
692 | ||
693 | /* Read the data. */ | |
694 | word_in = ixgbe_shift_in_eeprom_bits(hw, 16); | |
695 | *data = (word_in >> 8) | (word_in << 8); | |
696 | ||
697 | /* End this read operation */ | |
698 | ixgbe_release_eeprom(hw); | |
699 | } | |
700 | ||
701 | out: | |
702 | return status; | |
703 | } | |
704 | ||
705 | /** | |
21ce849b | 706 | * ixgbe_read_eerd_generic - Read EEPROM word using EERD |
9a799d71 AK |
707 | * @hw: pointer to hardware structure |
708 | * @offset: offset of word in the EEPROM to read | |
709 | * @data: word read from the EEPROM | |
710 | * | |
711 | * Reads a 16 bit word from the EEPROM using the EERD register. | |
712 | **/ | |
21ce849b | 713 | s32 ixgbe_read_eerd_generic(struct ixgbe_hw *hw, u16 offset, u16 *data) |
9a799d71 AK |
714 | { |
715 | u32 eerd; | |
716 | s32 status; | |
717 | ||
c44ade9e JB |
718 | hw->eeprom.ops.init_params(hw); |
719 | ||
720 | if (offset >= hw->eeprom.word_size) { | |
721 | status = IXGBE_ERR_EEPROM; | |
722 | goto out; | |
723 | } | |
724 | ||
21ce849b MC |
725 | eerd = (offset << IXGBE_EEPROM_RW_ADDR_SHIFT) + |
726 | IXGBE_EEPROM_RW_REG_START; | |
9a799d71 AK |
727 | |
728 | IXGBE_WRITE_REG(hw, IXGBE_EERD, eerd); | |
21ce849b | 729 | status = ixgbe_poll_eerd_eewr_done(hw, IXGBE_NVM_POLL_READ); |
9a799d71 AK |
730 | |
731 | if (status == 0) | |
732 | *data = (IXGBE_READ_REG(hw, IXGBE_EERD) >> | |
21ce849b | 733 | IXGBE_EEPROM_RW_REG_DATA); |
9a799d71 AK |
734 | else |
735 | hw_dbg(hw, "Eeprom read timed out\n"); | |
736 | ||
c44ade9e | 737 | out: |
9a799d71 AK |
738 | return status; |
739 | } | |
740 | ||
741 | /** | |
21ce849b | 742 | * ixgbe_poll_eerd_eewr_done - Poll EERD read or EEWR write status |
9a799d71 | 743 | * @hw: pointer to hardware structure |
21ce849b | 744 | * @ee_reg: EEPROM flag for polling |
9a799d71 | 745 | * |
21ce849b MC |
746 | * Polls the status bit (bit 1) of the EERD or EEWR to determine when the |
747 | * read or write is done respectively. | |
9a799d71 | 748 | **/ |
a391f1d5 | 749 | s32 ixgbe_poll_eerd_eewr_done(struct ixgbe_hw *hw, u32 ee_reg) |
9a799d71 AK |
750 | { |
751 | u32 i; | |
752 | u32 reg; | |
753 | s32 status = IXGBE_ERR_EEPROM; | |
754 | ||
21ce849b MC |
755 | for (i = 0; i < IXGBE_EERD_EEWR_ATTEMPTS; i++) { |
756 | if (ee_reg == IXGBE_NVM_POLL_READ) | |
757 | reg = IXGBE_READ_REG(hw, IXGBE_EERD); | |
758 | else | |
759 | reg = IXGBE_READ_REG(hw, IXGBE_EEWR); | |
760 | ||
761 | if (reg & IXGBE_EEPROM_RW_REG_DONE) { | |
9a799d71 AK |
762 | status = 0; |
763 | break; | |
764 | } | |
765 | udelay(5); | |
766 | } | |
767 | return status; | |
768 | } | |
769 | ||
c44ade9e JB |
770 | /** |
771 | * ixgbe_acquire_eeprom - Acquire EEPROM using bit-bang | |
772 | * @hw: pointer to hardware structure | |
773 | * | |
774 | * Prepares EEPROM for access using bit-bang method. This function should | |
775 | * be called before issuing a command to the EEPROM. | |
776 | **/ | |
777 | static s32 ixgbe_acquire_eeprom(struct ixgbe_hw *hw) | |
778 | { | |
779 | s32 status = 0; | |
dbf893ee | 780 | u32 eec; |
c44ade9e JB |
781 | u32 i; |
782 | ||
5e655105 | 783 | if (hw->mac.ops.acquire_swfw_sync(hw, IXGBE_GSSR_EEP_SM) != 0) |
c44ade9e JB |
784 | status = IXGBE_ERR_SWFW_SYNC; |
785 | ||
786 | if (status == 0) { | |
787 | eec = IXGBE_READ_REG(hw, IXGBE_EEC); | |
788 | ||
789 | /* Request EEPROM Access */ | |
790 | eec |= IXGBE_EEC_REQ; | |
791 | IXGBE_WRITE_REG(hw, IXGBE_EEC, eec); | |
792 | ||
793 | for (i = 0; i < IXGBE_EEPROM_GRANT_ATTEMPTS; i++) { | |
794 | eec = IXGBE_READ_REG(hw, IXGBE_EEC); | |
795 | if (eec & IXGBE_EEC_GNT) | |
796 | break; | |
797 | udelay(5); | |
798 | } | |
799 | ||
800 | /* Release if grant not acquired */ | |
801 | if (!(eec & IXGBE_EEC_GNT)) { | |
802 | eec &= ~IXGBE_EEC_REQ; | |
803 | IXGBE_WRITE_REG(hw, IXGBE_EEC, eec); | |
804 | hw_dbg(hw, "Could not acquire EEPROM grant\n"); | |
805 | ||
5e655105 | 806 | hw->mac.ops.release_swfw_sync(hw, IXGBE_GSSR_EEP_SM); |
c44ade9e JB |
807 | status = IXGBE_ERR_EEPROM; |
808 | } | |
c44ade9e | 809 | |
dbf893ee ET |
810 | /* Setup EEPROM for Read/Write */ |
811 | if (status == 0) { | |
812 | /* Clear CS and SK */ | |
813 | eec &= ~(IXGBE_EEC_CS | IXGBE_EEC_SK); | |
814 | IXGBE_WRITE_REG(hw, IXGBE_EEC, eec); | |
815 | IXGBE_WRITE_FLUSH(hw); | |
816 | udelay(1); | |
817 | } | |
c44ade9e JB |
818 | } |
819 | return status; | |
820 | } | |
821 | ||
9a799d71 AK |
822 | /** |
823 | * ixgbe_get_eeprom_semaphore - Get hardware semaphore | |
824 | * @hw: pointer to hardware structure | |
825 | * | |
826 | * Sets the hardware semaphores so EEPROM access can occur for bit-bang method | |
827 | **/ | |
828 | static s32 ixgbe_get_eeprom_semaphore(struct ixgbe_hw *hw) | |
829 | { | |
830 | s32 status = IXGBE_ERR_EEPROM; | |
dbf893ee | 831 | u32 timeout = 2000; |
9a799d71 AK |
832 | u32 i; |
833 | u32 swsm; | |
834 | ||
9a799d71 AK |
835 | /* Get SMBI software semaphore between device drivers first */ |
836 | for (i = 0; i < timeout; i++) { | |
837 | /* | |
838 | * If the SMBI bit is 0 when we read it, then the bit will be | |
839 | * set and we have the semaphore | |
840 | */ | |
841 | swsm = IXGBE_READ_REG(hw, IXGBE_SWSM); | |
842 | if (!(swsm & IXGBE_SWSM_SMBI)) { | |
843 | status = 0; | |
844 | break; | |
845 | } | |
dbf893ee | 846 | udelay(50); |
9a799d71 AK |
847 | } |
848 | ||
849 | /* Now get the semaphore between SW/FW through the SWESMBI bit */ | |
850 | if (status == 0) { | |
851 | for (i = 0; i < timeout; i++) { | |
852 | swsm = IXGBE_READ_REG(hw, IXGBE_SWSM); | |
853 | ||
854 | /* Set the SW EEPROM semaphore bit to request access */ | |
855 | swsm |= IXGBE_SWSM_SWESMBI; | |
856 | IXGBE_WRITE_REG(hw, IXGBE_SWSM, swsm); | |
857 | ||
858 | /* | |
859 | * If we set the bit successfully then we got the | |
860 | * semaphore. | |
861 | */ | |
862 | swsm = IXGBE_READ_REG(hw, IXGBE_SWSM); | |
863 | if (swsm & IXGBE_SWSM_SWESMBI) | |
864 | break; | |
865 | ||
866 | udelay(50); | |
867 | } | |
868 | ||
869 | /* | |
870 | * Release semaphores and return error if SW EEPROM semaphore | |
871 | * was not granted because we don't have access to the EEPROM | |
872 | */ | |
873 | if (i >= timeout) { | |
dbf893ee | 874 | hw_dbg(hw, "SWESMBI Software EEPROM semaphore " |
b4617240 | 875 | "not granted.\n"); |
9a799d71 AK |
876 | ixgbe_release_eeprom_semaphore(hw); |
877 | status = IXGBE_ERR_EEPROM; | |
878 | } | |
dbf893ee ET |
879 | } else { |
880 | hw_dbg(hw, "Software semaphore SMBI between device drivers " | |
881 | "not granted.\n"); | |
9a799d71 AK |
882 | } |
883 | ||
884 | return status; | |
885 | } | |
886 | ||
887 | /** | |
888 | * ixgbe_release_eeprom_semaphore - Release hardware semaphore | |
889 | * @hw: pointer to hardware structure | |
890 | * | |
891 | * This function clears hardware semaphore bits. | |
892 | **/ | |
893 | static void ixgbe_release_eeprom_semaphore(struct ixgbe_hw *hw) | |
894 | { | |
895 | u32 swsm; | |
896 | ||
897 | swsm = IXGBE_READ_REG(hw, IXGBE_SWSM); | |
898 | ||
899 | /* Release both semaphores by writing 0 to the bits SWESMBI and SMBI */ | |
900 | swsm &= ~(IXGBE_SWSM_SWESMBI | IXGBE_SWSM_SMBI); | |
901 | IXGBE_WRITE_REG(hw, IXGBE_SWSM, swsm); | |
3957d63d | 902 | IXGBE_WRITE_FLUSH(hw); |
9a799d71 AK |
903 | } |
904 | ||
c44ade9e JB |
905 | /** |
906 | * ixgbe_ready_eeprom - Polls for EEPROM ready | |
907 | * @hw: pointer to hardware structure | |
908 | **/ | |
909 | static s32 ixgbe_ready_eeprom(struct ixgbe_hw *hw) | |
910 | { | |
911 | s32 status = 0; | |
912 | u16 i; | |
913 | u8 spi_stat_reg; | |
914 | ||
915 | /* | |
916 | * Read "Status Register" repeatedly until the LSB is cleared. The | |
917 | * EEPROM will signal that the command has been completed by clearing | |
918 | * bit 0 of the internal status register. If it's not cleared within | |
919 | * 5 milliseconds, then error out. | |
920 | */ | |
921 | for (i = 0; i < IXGBE_EEPROM_MAX_RETRY_SPI; i += 5) { | |
922 | ixgbe_shift_out_eeprom_bits(hw, IXGBE_EEPROM_RDSR_OPCODE_SPI, | |
923 | IXGBE_EEPROM_OPCODE_BITS); | |
924 | spi_stat_reg = (u8)ixgbe_shift_in_eeprom_bits(hw, 8); | |
925 | if (!(spi_stat_reg & IXGBE_EEPROM_STATUS_RDY_SPI)) | |
926 | break; | |
927 | ||
928 | udelay(5); | |
929 | ixgbe_standby_eeprom(hw); | |
930 | }; | |
931 | ||
932 | /* | |
933 | * On some parts, SPI write time could vary from 0-20mSec on 3.3V | |
934 | * devices (and only 0-5mSec on 5V devices) | |
935 | */ | |
936 | if (i >= IXGBE_EEPROM_MAX_RETRY_SPI) { | |
937 | hw_dbg(hw, "SPI EEPROM Status error\n"); | |
938 | status = IXGBE_ERR_EEPROM; | |
939 | } | |
940 | ||
941 | return status; | |
942 | } | |
943 | ||
944 | /** | |
945 | * ixgbe_standby_eeprom - Returns EEPROM to a "standby" state | |
946 | * @hw: pointer to hardware structure | |
947 | **/ | |
948 | static void ixgbe_standby_eeprom(struct ixgbe_hw *hw) | |
949 | { | |
950 | u32 eec; | |
951 | ||
952 | eec = IXGBE_READ_REG(hw, IXGBE_EEC); | |
953 | ||
954 | /* Toggle CS to flush commands */ | |
955 | eec |= IXGBE_EEC_CS; | |
956 | IXGBE_WRITE_REG(hw, IXGBE_EEC, eec); | |
957 | IXGBE_WRITE_FLUSH(hw); | |
958 | udelay(1); | |
959 | eec &= ~IXGBE_EEC_CS; | |
960 | IXGBE_WRITE_REG(hw, IXGBE_EEC, eec); | |
961 | IXGBE_WRITE_FLUSH(hw); | |
962 | udelay(1); | |
963 | } | |
964 | ||
965 | /** | |
966 | * ixgbe_shift_out_eeprom_bits - Shift data bits out to the EEPROM. | |
967 | * @hw: pointer to hardware structure | |
968 | * @data: data to send to the EEPROM | |
969 | * @count: number of bits to shift out | |
970 | **/ | |
971 | static void ixgbe_shift_out_eeprom_bits(struct ixgbe_hw *hw, u16 data, | |
972 | u16 count) | |
973 | { | |
974 | u32 eec; | |
975 | u32 mask; | |
976 | u32 i; | |
977 | ||
978 | eec = IXGBE_READ_REG(hw, IXGBE_EEC); | |
979 | ||
980 | /* | |
981 | * Mask is used to shift "count" bits of "data" out to the EEPROM | |
982 | * one bit at a time. Determine the starting bit based on count | |
983 | */ | |
984 | mask = 0x01 << (count - 1); | |
985 | ||
986 | for (i = 0; i < count; i++) { | |
987 | /* | |
988 | * A "1" is shifted out to the EEPROM by setting bit "DI" to a | |
989 | * "1", and then raising and then lowering the clock (the SK | |
990 | * bit controls the clock input to the EEPROM). A "0" is | |
991 | * shifted out to the EEPROM by setting "DI" to "0" and then | |
992 | * raising and then lowering the clock. | |
993 | */ | |
994 | if (data & mask) | |
995 | eec |= IXGBE_EEC_DI; | |
996 | else | |
997 | eec &= ~IXGBE_EEC_DI; | |
998 | ||
999 | IXGBE_WRITE_REG(hw, IXGBE_EEC, eec); | |
1000 | IXGBE_WRITE_FLUSH(hw); | |
1001 | ||
1002 | udelay(1); | |
1003 | ||
1004 | ixgbe_raise_eeprom_clk(hw, &eec); | |
1005 | ixgbe_lower_eeprom_clk(hw, &eec); | |
1006 | ||
1007 | /* | |
1008 | * Shift mask to signify next bit of data to shift in to the | |
1009 | * EEPROM | |
1010 | */ | |
1011 | mask = mask >> 1; | |
1012 | }; | |
1013 | ||
1014 | /* We leave the "DI" bit set to "0" when we leave this routine. */ | |
1015 | eec &= ~IXGBE_EEC_DI; | |
1016 | IXGBE_WRITE_REG(hw, IXGBE_EEC, eec); | |
1017 | IXGBE_WRITE_FLUSH(hw); | |
1018 | } | |
1019 | ||
1020 | /** | |
1021 | * ixgbe_shift_in_eeprom_bits - Shift data bits in from the EEPROM | |
1022 | * @hw: pointer to hardware structure | |
1023 | **/ | |
1024 | static u16 ixgbe_shift_in_eeprom_bits(struct ixgbe_hw *hw, u16 count) | |
1025 | { | |
1026 | u32 eec; | |
1027 | u32 i; | |
1028 | u16 data = 0; | |
1029 | ||
1030 | /* | |
1031 | * In order to read a register from the EEPROM, we need to shift | |
1032 | * 'count' bits in from the EEPROM. Bits are "shifted in" by raising | |
1033 | * the clock input to the EEPROM (setting the SK bit), and then reading | |
1034 | * the value of the "DO" bit. During this "shifting in" process the | |
1035 | * "DI" bit should always be clear. | |
1036 | */ | |
1037 | eec = IXGBE_READ_REG(hw, IXGBE_EEC); | |
1038 | ||
1039 | eec &= ~(IXGBE_EEC_DO | IXGBE_EEC_DI); | |
1040 | ||
1041 | for (i = 0; i < count; i++) { | |
1042 | data = data << 1; | |
1043 | ixgbe_raise_eeprom_clk(hw, &eec); | |
1044 | ||
1045 | eec = IXGBE_READ_REG(hw, IXGBE_EEC); | |
1046 | ||
1047 | eec &= ~(IXGBE_EEC_DI); | |
1048 | if (eec & IXGBE_EEC_DO) | |
1049 | data |= 1; | |
1050 | ||
1051 | ixgbe_lower_eeprom_clk(hw, &eec); | |
1052 | } | |
1053 | ||
1054 | return data; | |
1055 | } | |
1056 | ||
1057 | /** | |
1058 | * ixgbe_raise_eeprom_clk - Raises the EEPROM's clock input. | |
1059 | * @hw: pointer to hardware structure | |
1060 | * @eec: EEC register's current value | |
1061 | **/ | |
1062 | static void ixgbe_raise_eeprom_clk(struct ixgbe_hw *hw, u32 *eec) | |
1063 | { | |
1064 | /* | |
1065 | * Raise the clock input to the EEPROM | |
1066 | * (setting the SK bit), then delay | |
1067 | */ | |
1068 | *eec = *eec | IXGBE_EEC_SK; | |
1069 | IXGBE_WRITE_REG(hw, IXGBE_EEC, *eec); | |
1070 | IXGBE_WRITE_FLUSH(hw); | |
1071 | udelay(1); | |
1072 | } | |
1073 | ||
1074 | /** | |
1075 | * ixgbe_lower_eeprom_clk - Lowers the EEPROM's clock input. | |
1076 | * @hw: pointer to hardware structure | |
1077 | * @eecd: EECD's current value | |
1078 | **/ | |
1079 | static void ixgbe_lower_eeprom_clk(struct ixgbe_hw *hw, u32 *eec) | |
1080 | { | |
1081 | /* | |
1082 | * Lower the clock input to the EEPROM (clearing the SK bit), then | |
1083 | * delay | |
1084 | */ | |
1085 | *eec = *eec & ~IXGBE_EEC_SK; | |
1086 | IXGBE_WRITE_REG(hw, IXGBE_EEC, *eec); | |
1087 | IXGBE_WRITE_FLUSH(hw); | |
1088 | udelay(1); | |
1089 | } | |
1090 | ||
1091 | /** | |
1092 | * ixgbe_release_eeprom - Release EEPROM, release semaphores | |
1093 | * @hw: pointer to hardware structure | |
1094 | **/ | |
1095 | static void ixgbe_release_eeprom(struct ixgbe_hw *hw) | |
1096 | { | |
1097 | u32 eec; | |
1098 | ||
1099 | eec = IXGBE_READ_REG(hw, IXGBE_EEC); | |
1100 | ||
1101 | eec |= IXGBE_EEC_CS; /* Pull CS high */ | |
1102 | eec &= ~IXGBE_EEC_SK; /* Lower SCK */ | |
1103 | ||
1104 | IXGBE_WRITE_REG(hw, IXGBE_EEC, eec); | |
1105 | IXGBE_WRITE_FLUSH(hw); | |
1106 | ||
1107 | udelay(1); | |
1108 | ||
1109 | /* Stop requesting EEPROM access */ | |
1110 | eec &= ~IXGBE_EEC_REQ; | |
1111 | IXGBE_WRITE_REG(hw, IXGBE_EEC, eec); | |
1112 | ||
90827996 | 1113 | hw->mac.ops.release_swfw_sync(hw, IXGBE_GSSR_EEP_SM); |
dbf893ee ET |
1114 | |
1115 | /* Delay before attempt to obtain semaphore again to allow FW access */ | |
1116 | msleep(hw->eeprom.semaphore_delay); | |
c44ade9e JB |
1117 | } |
1118 | ||
9a799d71 | 1119 | /** |
dbf893ee | 1120 | * ixgbe_calc_eeprom_checksum_generic - Calculates and returns the checksum |
9a799d71 AK |
1121 | * @hw: pointer to hardware structure |
1122 | **/ | |
a391f1d5 | 1123 | u16 ixgbe_calc_eeprom_checksum_generic(struct ixgbe_hw *hw) |
9a799d71 AK |
1124 | { |
1125 | u16 i; | |
1126 | u16 j; | |
1127 | u16 checksum = 0; | |
1128 | u16 length = 0; | |
1129 | u16 pointer = 0; | |
1130 | u16 word = 0; | |
1131 | ||
1132 | /* Include 0x0-0x3F in the checksum */ | |
1133 | for (i = 0; i < IXGBE_EEPROM_CHECKSUM; i++) { | |
c44ade9e | 1134 | if (hw->eeprom.ops.read(hw, i, &word) != 0) { |
9a799d71 AK |
1135 | hw_dbg(hw, "EEPROM read failed\n"); |
1136 | break; | |
1137 | } | |
1138 | checksum += word; | |
1139 | } | |
1140 | ||
1141 | /* Include all data from pointers except for the fw pointer */ | |
1142 | for (i = IXGBE_PCIE_ANALOG_PTR; i < IXGBE_FW_PTR; i++) { | |
c44ade9e | 1143 | hw->eeprom.ops.read(hw, i, &pointer); |
9a799d71 AK |
1144 | |
1145 | /* Make sure the pointer seems valid */ | |
1146 | if (pointer != 0xFFFF && pointer != 0) { | |
c44ade9e | 1147 | hw->eeprom.ops.read(hw, pointer, &length); |
9a799d71 AK |
1148 | |
1149 | if (length != 0xFFFF && length != 0) { | |
1150 | for (j = pointer+1; j <= pointer+length; j++) { | |
c44ade9e | 1151 | hw->eeprom.ops.read(hw, j, &word); |
9a799d71 AK |
1152 | checksum += word; |
1153 | } | |
1154 | } | |
1155 | } | |
1156 | } | |
1157 | ||
1158 | checksum = (u16)IXGBE_EEPROM_SUM - checksum; | |
1159 | ||
1160 | return checksum; | |
1161 | } | |
1162 | ||
1163 | /** | |
c44ade9e | 1164 | * ixgbe_validate_eeprom_checksum_generic - Validate EEPROM checksum |
9a799d71 AK |
1165 | * @hw: pointer to hardware structure |
1166 | * @checksum_val: calculated checksum | |
1167 | * | |
1168 | * Performs checksum calculation and validates the EEPROM checksum. If the | |
1169 | * caller does not need checksum_val, the value can be NULL. | |
1170 | **/ | |
c44ade9e JB |
1171 | s32 ixgbe_validate_eeprom_checksum_generic(struct ixgbe_hw *hw, |
1172 | u16 *checksum_val) | |
9a799d71 AK |
1173 | { |
1174 | s32 status; | |
1175 | u16 checksum; | |
1176 | u16 read_checksum = 0; | |
1177 | ||
1178 | /* | |
1179 | * Read the first word from the EEPROM. If this times out or fails, do | |
1180 | * not continue or we could be in for a very long wait while every | |
1181 | * EEPROM read fails | |
1182 | */ | |
c44ade9e | 1183 | status = hw->eeprom.ops.read(hw, 0, &checksum); |
9a799d71 AK |
1184 | |
1185 | if (status == 0) { | |
a391f1d5 | 1186 | checksum = hw->eeprom.ops.calc_checksum(hw); |
9a799d71 | 1187 | |
c44ade9e | 1188 | hw->eeprom.ops.read(hw, IXGBE_EEPROM_CHECKSUM, &read_checksum); |
9a799d71 AK |
1189 | |
1190 | /* | |
1191 | * Verify read checksum from EEPROM is the same as | |
1192 | * calculated checksum | |
1193 | */ | |
1194 | if (read_checksum != checksum) | |
1195 | status = IXGBE_ERR_EEPROM_CHECKSUM; | |
1196 | ||
1197 | /* If the user cares, return the calculated checksum */ | |
1198 | if (checksum_val) | |
1199 | *checksum_val = checksum; | |
1200 | } else { | |
1201 | hw_dbg(hw, "EEPROM read failed\n"); | |
1202 | } | |
1203 | ||
1204 | return status; | |
1205 | } | |
1206 | ||
c44ade9e JB |
1207 | /** |
1208 | * ixgbe_update_eeprom_checksum_generic - Updates the EEPROM checksum | |
1209 | * @hw: pointer to hardware structure | |
1210 | **/ | |
1211 | s32 ixgbe_update_eeprom_checksum_generic(struct ixgbe_hw *hw) | |
1212 | { | |
1213 | s32 status; | |
1214 | u16 checksum; | |
1215 | ||
1216 | /* | |
1217 | * Read the first word from the EEPROM. If this times out or fails, do | |
1218 | * not continue or we could be in for a very long wait while every | |
1219 | * EEPROM read fails | |
1220 | */ | |
1221 | status = hw->eeprom.ops.read(hw, 0, &checksum); | |
1222 | ||
1223 | if (status == 0) { | |
a391f1d5 | 1224 | checksum = hw->eeprom.ops.calc_checksum(hw); |
c44ade9e | 1225 | status = hw->eeprom.ops.write(hw, IXGBE_EEPROM_CHECKSUM, |
8c7bea32 | 1226 | checksum); |
c44ade9e JB |
1227 | } else { |
1228 | hw_dbg(hw, "EEPROM read failed\n"); | |
1229 | } | |
1230 | ||
1231 | return status; | |
1232 | } | |
1233 | ||
9a799d71 AK |
1234 | /** |
1235 | * ixgbe_validate_mac_addr - Validate MAC address | |
1236 | * @mac_addr: pointer to MAC address. | |
1237 | * | |
1238 | * Tests a MAC address to ensure it is a valid Individual Address | |
1239 | **/ | |
1240 | s32 ixgbe_validate_mac_addr(u8 *mac_addr) | |
1241 | { | |
1242 | s32 status = 0; | |
1243 | ||
1244 | /* Make sure it is not a multicast address */ | |
1245 | if (IXGBE_IS_MULTICAST(mac_addr)) | |
1246 | status = IXGBE_ERR_INVALID_MAC_ADDR; | |
1247 | /* Not a broadcast address */ | |
1248 | else if (IXGBE_IS_BROADCAST(mac_addr)) | |
1249 | status = IXGBE_ERR_INVALID_MAC_ADDR; | |
1250 | /* Reject the zero address */ | |
1251 | else if (mac_addr[0] == 0 && mac_addr[1] == 0 && mac_addr[2] == 0 && | |
c44ade9e | 1252 | mac_addr[3] == 0 && mac_addr[4] == 0 && mac_addr[5] == 0) |
9a799d71 AK |
1253 | status = IXGBE_ERR_INVALID_MAC_ADDR; |
1254 | ||
1255 | return status; | |
1256 | } | |
1257 | ||
1258 | /** | |
c44ade9e | 1259 | * ixgbe_set_rar_generic - Set Rx address register |
9a799d71 | 1260 | * @hw: pointer to hardware structure |
9a799d71 | 1261 | * @index: Receive address register to write |
c44ade9e JB |
1262 | * @addr: Address to put into receive address register |
1263 | * @vmdq: VMDq "set" or "pool" index | |
9a799d71 AK |
1264 | * @enable_addr: set flag that address is active |
1265 | * | |
1266 | * Puts an ethernet address into a receive address register. | |
1267 | **/ | |
c44ade9e JB |
1268 | s32 ixgbe_set_rar_generic(struct ixgbe_hw *hw, u32 index, u8 *addr, u32 vmdq, |
1269 | u32 enable_addr) | |
9a799d71 AK |
1270 | { |
1271 | u32 rar_low, rar_high; | |
c44ade9e JB |
1272 | u32 rar_entries = hw->mac.num_rar_entries; |
1273 | ||
c700f4e6 ET |
1274 | /* Make sure we are using a valid rar index range */ |
1275 | if (index >= rar_entries) { | |
1276 | hw_dbg(hw, "RAR index %d is out of range.\n", index); | |
1277 | return IXGBE_ERR_INVALID_ARGUMENT; | |
1278 | } | |
1279 | ||
c44ade9e JB |
1280 | /* setup VMDq pool selection before this RAR gets enabled */ |
1281 | hw->mac.ops.set_vmdq(hw, index, vmdq); | |
9a799d71 | 1282 | |
c700f4e6 ET |
1283 | /* |
1284 | * HW expects these in little endian so we reverse the byte | |
1285 | * order from network order (big endian) to little endian | |
1286 | */ | |
1287 | rar_low = ((u32)addr[0] | | |
1288 | ((u32)addr[1] << 8) | | |
1289 | ((u32)addr[2] << 16) | | |
1290 | ((u32)addr[3] << 24)); | |
1291 | /* | |
1292 | * Some parts put the VMDq setting in the extra RAH bits, | |
1293 | * so save everything except the lower 16 bits that hold part | |
1294 | * of the address and the address valid bit. | |
1295 | */ | |
1296 | rar_high = IXGBE_READ_REG(hw, IXGBE_RAH(index)); | |
1297 | rar_high &= ~(0x0000FFFF | IXGBE_RAH_AV); | |
1298 | rar_high |= ((u32)addr[4] | ((u32)addr[5] << 8)); | |
9a799d71 | 1299 | |
c700f4e6 ET |
1300 | if (enable_addr != 0) |
1301 | rar_high |= IXGBE_RAH_AV; | |
9a799d71 | 1302 | |
c700f4e6 ET |
1303 | IXGBE_WRITE_REG(hw, IXGBE_RAL(index), rar_low); |
1304 | IXGBE_WRITE_REG(hw, IXGBE_RAH(index), rar_high); | |
c44ade9e JB |
1305 | |
1306 | return 0; | |
1307 | } | |
1308 | ||
1309 | /** | |
1310 | * ixgbe_clear_rar_generic - Remove Rx address register | |
1311 | * @hw: pointer to hardware structure | |
1312 | * @index: Receive address register to write | |
1313 | * | |
1314 | * Clears an ethernet address from a receive address register. | |
1315 | **/ | |
1316 | s32 ixgbe_clear_rar_generic(struct ixgbe_hw *hw, u32 index) | |
1317 | { | |
1318 | u32 rar_high; | |
1319 | u32 rar_entries = hw->mac.num_rar_entries; | |
1320 | ||
1321 | /* Make sure we are using a valid rar index range */ | |
c700f4e6 | 1322 | if (index >= rar_entries) { |
c44ade9e | 1323 | hw_dbg(hw, "RAR index %d is out of range.\n", index); |
c700f4e6 | 1324 | return IXGBE_ERR_INVALID_ARGUMENT; |
c44ade9e JB |
1325 | } |
1326 | ||
c700f4e6 ET |
1327 | /* |
1328 | * Some parts put the VMDq setting in the extra RAH bits, | |
1329 | * so save everything except the lower 16 bits that hold part | |
1330 | * of the address and the address valid bit. | |
1331 | */ | |
1332 | rar_high = IXGBE_READ_REG(hw, IXGBE_RAH(index)); | |
1333 | rar_high &= ~(0x0000FFFF | IXGBE_RAH_AV); | |
1334 | ||
1335 | IXGBE_WRITE_REG(hw, IXGBE_RAL(index), 0); | |
1336 | IXGBE_WRITE_REG(hw, IXGBE_RAH(index), rar_high); | |
1337 | ||
c44ade9e JB |
1338 | /* clear VMDq pool/queue selection for this RAR */ |
1339 | hw->mac.ops.clear_vmdq(hw, index, IXGBE_CLEAR_VMDQ_ALL); | |
9a799d71 AK |
1340 | |
1341 | return 0; | |
1342 | } | |
1343 | ||
c44ade9e JB |
1344 | /** |
1345 | * ixgbe_init_rx_addrs_generic - Initializes receive address filters. | |
9a799d71 AK |
1346 | * @hw: pointer to hardware structure |
1347 | * | |
1348 | * Places the MAC address in receive address register 0 and clears the rest | |
c44ade9e | 1349 | * of the receive address registers. Clears the multicast table. Assumes |
9a799d71 AK |
1350 | * the receiver is in reset when the routine is called. |
1351 | **/ | |
c44ade9e | 1352 | s32 ixgbe_init_rx_addrs_generic(struct ixgbe_hw *hw) |
9a799d71 AK |
1353 | { |
1354 | u32 i; | |
2c5645cf | 1355 | u32 rar_entries = hw->mac.num_rar_entries; |
9a799d71 AK |
1356 | |
1357 | /* | |
1358 | * If the current mac address is valid, assume it is a software override | |
1359 | * to the permanent address. | |
1360 | * Otherwise, use the permanent address from the eeprom. | |
1361 | */ | |
1362 | if (ixgbe_validate_mac_addr(hw->mac.addr) == | |
1363 | IXGBE_ERR_INVALID_MAC_ADDR) { | |
1364 | /* Get the MAC address from the RAR0 for later reference */ | |
c44ade9e | 1365 | hw->mac.ops.get_mac_addr(hw, hw->mac.addr); |
9a799d71 | 1366 | |
ce7194d8 | 1367 | hw_dbg(hw, " Keeping Current RAR0 Addr =%pM\n", hw->mac.addr); |
9a799d71 AK |
1368 | } else { |
1369 | /* Setup the receive address. */ | |
1370 | hw_dbg(hw, "Overriding MAC Address in RAR[0]\n"); | |
ce7194d8 | 1371 | hw_dbg(hw, " New MAC Addr =%pM\n", hw->mac.addr); |
9a799d71 | 1372 | |
c44ade9e | 1373 | hw->mac.ops.set_rar(hw, 0, hw->mac.addr, 0, IXGBE_RAH_AV); |
96cc6372 AD |
1374 | |
1375 | /* clear VMDq pool/queue selection for RAR 0 */ | |
1376 | hw->mac.ops.clear_vmdq(hw, 0, IXGBE_CLEAR_VMDQ_ALL); | |
9a799d71 | 1377 | } |
c44ade9e | 1378 | hw->addr_ctrl.overflow_promisc = 0; |
9a799d71 AK |
1379 | |
1380 | hw->addr_ctrl.rar_used_count = 1; | |
1381 | ||
1382 | /* Zero out the other receive addresses. */ | |
c44ade9e | 1383 | hw_dbg(hw, "Clearing RAR[1-%d]\n", rar_entries - 1); |
9a799d71 AK |
1384 | for (i = 1; i < rar_entries; i++) { |
1385 | IXGBE_WRITE_REG(hw, IXGBE_RAL(i), 0); | |
1386 | IXGBE_WRITE_REG(hw, IXGBE_RAH(i), 0); | |
1387 | } | |
1388 | ||
1389 | /* Clear the MTA */ | |
9a799d71 AK |
1390 | hw->addr_ctrl.mta_in_use = 0; |
1391 | IXGBE_WRITE_REG(hw, IXGBE_MCSTCTRL, hw->mac.mc_filter_type); | |
1392 | ||
1393 | hw_dbg(hw, " Clearing MTA\n"); | |
2c5645cf | 1394 | for (i = 0; i < hw->mac.mcft_size; i++) |
9a799d71 AK |
1395 | IXGBE_WRITE_REG(hw, IXGBE_MTA(i), 0); |
1396 | ||
c44ade9e JB |
1397 | if (hw->mac.ops.init_uta_tables) |
1398 | hw->mac.ops.init_uta_tables(hw); | |
1399 | ||
9a799d71 AK |
1400 | return 0; |
1401 | } | |
1402 | ||
1403 | /** | |
1404 | * ixgbe_mta_vector - Determines bit-vector in multicast table to set | |
1405 | * @hw: pointer to hardware structure | |
1406 | * @mc_addr: the multicast address | |
1407 | * | |
1408 | * Extracts the 12 bits, from a multicast address, to determine which | |
1409 | * bit-vector to set in the multicast table. The hardware uses 12 bits, from | |
1410 | * incoming rx multicast addresses, to determine the bit-vector to check in | |
1411 | * the MTA. Which of the 4 combination, of 12-bits, the hardware uses is set | |
c44ade9e | 1412 | * by the MO field of the MCSTCTRL. The MO field is set during initialization |
9a799d71 AK |
1413 | * to mc_filter_type. |
1414 | **/ | |
1415 | static s32 ixgbe_mta_vector(struct ixgbe_hw *hw, u8 *mc_addr) | |
1416 | { | |
1417 | u32 vector = 0; | |
1418 | ||
1419 | switch (hw->mac.mc_filter_type) { | |
b4617240 | 1420 | case 0: /* use bits [47:36] of the address */ |
9a799d71 AK |
1421 | vector = ((mc_addr[4] >> 4) | (((u16)mc_addr[5]) << 4)); |
1422 | break; | |
b4617240 | 1423 | case 1: /* use bits [46:35] of the address */ |
9a799d71 AK |
1424 | vector = ((mc_addr[4] >> 3) | (((u16)mc_addr[5]) << 5)); |
1425 | break; | |
b4617240 | 1426 | case 2: /* use bits [45:34] of the address */ |
9a799d71 AK |
1427 | vector = ((mc_addr[4] >> 2) | (((u16)mc_addr[5]) << 6)); |
1428 | break; | |
b4617240 | 1429 | case 3: /* use bits [43:32] of the address */ |
9a799d71 AK |
1430 | vector = ((mc_addr[4]) | (((u16)mc_addr[5]) << 8)); |
1431 | break; | |
b4617240 | 1432 | default: /* Invalid mc_filter_type */ |
9a799d71 AK |
1433 | hw_dbg(hw, "MC filter type param set incorrectly\n"); |
1434 | break; | |
1435 | } | |
1436 | ||
1437 | /* vector can only be 12-bits or boundary will be exceeded */ | |
1438 | vector &= 0xFFF; | |
1439 | return vector; | |
1440 | } | |
1441 | ||
1442 | /** | |
1443 | * ixgbe_set_mta - Set bit-vector in multicast table | |
1444 | * @hw: pointer to hardware structure | |
1445 | * @hash_value: Multicast address hash value | |
1446 | * | |
1447 | * Sets the bit-vector in the multicast table. | |
1448 | **/ | |
1449 | static void ixgbe_set_mta(struct ixgbe_hw *hw, u8 *mc_addr) | |
1450 | { | |
1451 | u32 vector; | |
1452 | u32 vector_bit; | |
1453 | u32 vector_reg; | |
9a799d71 AK |
1454 | |
1455 | hw->addr_ctrl.mta_in_use++; | |
1456 | ||
1457 | vector = ixgbe_mta_vector(hw, mc_addr); | |
1458 | hw_dbg(hw, " bit-vector = 0x%03X\n", vector); | |
1459 | ||
1460 | /* | |
1461 | * The MTA is a register array of 128 32-bit registers. It is treated | |
1462 | * like an array of 4096 bits. We want to set bit | |
1463 | * BitArray[vector_value]. So we figure out what register the bit is | |
1464 | * in, read it, OR in the new bit, then write back the new value. The | |
1465 | * register is determined by the upper 7 bits of the vector value and | |
1466 | * the bit within that register are determined by the lower 5 bits of | |
1467 | * the value. | |
1468 | */ | |
1469 | vector_reg = (vector >> 5) & 0x7F; | |
1470 | vector_bit = vector & 0x1F; | |
80960ab0 | 1471 | hw->mac.mta_shadow[vector_reg] |= (1 << vector_bit); |
9a799d71 AK |
1472 | } |
1473 | ||
9a799d71 | 1474 | /** |
c44ade9e | 1475 | * ixgbe_update_mc_addr_list_generic - Updates MAC list of multicast addresses |
9a799d71 | 1476 | * @hw: pointer to hardware structure |
2853eb89 | 1477 | * @netdev: pointer to net device structure |
9a799d71 AK |
1478 | * |
1479 | * The given list replaces any existing list. Clears the MC addrs from receive | |
c44ade9e | 1480 | * address registers and the multicast table. Uses unused receive address |
9a799d71 AK |
1481 | * registers for the first multicast addresses, and hashes the rest into the |
1482 | * multicast table. | |
1483 | **/ | |
2853eb89 JP |
1484 | s32 ixgbe_update_mc_addr_list_generic(struct ixgbe_hw *hw, |
1485 | struct net_device *netdev) | |
9a799d71 | 1486 | { |
22bedad3 | 1487 | struct netdev_hw_addr *ha; |
9a799d71 | 1488 | u32 i; |
9a799d71 AK |
1489 | |
1490 | /* | |
1491 | * Set the new number of MC addresses that we are being requested to | |
1492 | * use. | |
1493 | */ | |
2853eb89 | 1494 | hw->addr_ctrl.num_mc_addrs = netdev_mc_count(netdev); |
9a799d71 AK |
1495 | hw->addr_ctrl.mta_in_use = 0; |
1496 | ||
80960ab0 | 1497 | /* Clear mta_shadow */ |
9a799d71 | 1498 | hw_dbg(hw, " Clearing MTA\n"); |
80960ab0 | 1499 | memset(&hw->mac.mta_shadow, 0, sizeof(hw->mac.mta_shadow)); |
9a799d71 | 1500 | |
80960ab0 | 1501 | /* Update mta shadow */ |
22bedad3 | 1502 | netdev_for_each_mc_addr(ha, netdev) { |
9a799d71 | 1503 | hw_dbg(hw, " Adding the multicast addresses:\n"); |
22bedad3 | 1504 | ixgbe_set_mta(hw, ha->addr); |
9a799d71 AK |
1505 | } |
1506 | ||
1507 | /* Enable mta */ | |
80960ab0 ET |
1508 | for (i = 0; i < hw->mac.mcft_size; i++) |
1509 | IXGBE_WRITE_REG_ARRAY(hw, IXGBE_MTA(0), i, | |
1510 | hw->mac.mta_shadow[i]); | |
1511 | ||
9a799d71 AK |
1512 | if (hw->addr_ctrl.mta_in_use > 0) |
1513 | IXGBE_WRITE_REG(hw, IXGBE_MCSTCTRL, | |
b4617240 | 1514 | IXGBE_MCSTCTRL_MFE | hw->mac.mc_filter_type); |
9a799d71 | 1515 | |
c44ade9e | 1516 | hw_dbg(hw, "ixgbe_update_mc_addr_list_generic Complete\n"); |
9a799d71 AK |
1517 | return 0; |
1518 | } | |
1519 | ||
1520 | /** | |
c44ade9e | 1521 | * ixgbe_enable_mc_generic - Enable multicast address in RAR |
9a799d71 AK |
1522 | * @hw: pointer to hardware structure |
1523 | * | |
c44ade9e | 1524 | * Enables multicast address in RAR and the use of the multicast hash table. |
9a799d71 | 1525 | **/ |
c44ade9e | 1526 | s32 ixgbe_enable_mc_generic(struct ixgbe_hw *hw) |
9a799d71 | 1527 | { |
c44ade9e | 1528 | struct ixgbe_addr_filter_info *a = &hw->addr_ctrl; |
9a799d71 | 1529 | |
c44ade9e JB |
1530 | if (a->mta_in_use > 0) |
1531 | IXGBE_WRITE_REG(hw, IXGBE_MCSTCTRL, IXGBE_MCSTCTRL_MFE | | |
1532 | hw->mac.mc_filter_type); | |
9a799d71 AK |
1533 | |
1534 | return 0; | |
1535 | } | |
1536 | ||
1537 | /** | |
c44ade9e | 1538 | * ixgbe_disable_mc_generic - Disable multicast address in RAR |
9a799d71 | 1539 | * @hw: pointer to hardware structure |
9a799d71 | 1540 | * |
c44ade9e | 1541 | * Disables multicast address in RAR and the use of the multicast hash table. |
9a799d71 | 1542 | **/ |
c44ade9e | 1543 | s32 ixgbe_disable_mc_generic(struct ixgbe_hw *hw) |
9a799d71 | 1544 | { |
c44ade9e | 1545 | struct ixgbe_addr_filter_info *a = &hw->addr_ctrl; |
2b9ade93 | 1546 | |
c44ade9e JB |
1547 | if (a->mta_in_use > 0) |
1548 | IXGBE_WRITE_REG(hw, IXGBE_MCSTCTRL, hw->mac.mc_filter_type); | |
9a799d71 AK |
1549 | |
1550 | return 0; | |
1551 | } | |
1552 | ||
11afc1b1 | 1553 | /** |
620fa036 | 1554 | * ixgbe_fc_enable_generic - Enable flow control |
11afc1b1 PW |
1555 | * @hw: pointer to hardware structure |
1556 | * @packetbuf_num: packet buffer number (0-7) | |
1557 | * | |
1558 | * Enable flow control according to the current settings. | |
1559 | **/ | |
620fa036 | 1560 | s32 ixgbe_fc_enable_generic(struct ixgbe_hw *hw, s32 packetbuf_num) |
11afc1b1 PW |
1561 | { |
1562 | s32 ret_val = 0; | |
620fa036 | 1563 | u32 mflcn_reg, fccfg_reg; |
11afc1b1 | 1564 | u32 reg; |
70b77628 | 1565 | u32 rx_pba_size; |
16b61beb | 1566 | u32 fcrtl, fcrth; |
70b77628 PWJ |
1567 | |
1568 | #ifdef CONFIG_DCB | |
1569 | if (hw->fc.requested_mode == ixgbe_fc_pfc) | |
1570 | goto out; | |
1571 | ||
1572 | #endif /* CONFIG_DCB */ | |
620fa036 MC |
1573 | /* Negotiate the fc mode to use */ |
1574 | ret_val = ixgbe_fc_autoneg(hw); | |
0b0c2b31 | 1575 | if (ret_val == IXGBE_ERR_FLOW_CONTROL) |
620fa036 | 1576 | goto out; |
11afc1b1 | 1577 | |
620fa036 | 1578 | /* Disable any previous flow control settings */ |
11afc1b1 PW |
1579 | mflcn_reg = IXGBE_READ_REG(hw, IXGBE_MFLCN); |
1580 | mflcn_reg &= ~(IXGBE_MFLCN_RFCE | IXGBE_MFLCN_RPFCE); | |
1581 | ||
1582 | fccfg_reg = IXGBE_READ_REG(hw, IXGBE_FCCFG); | |
1583 | fccfg_reg &= ~(IXGBE_FCCFG_TFCE_802_3X | IXGBE_FCCFG_TFCE_PRIORITY); | |
1584 | ||
1585 | /* | |
1586 | * The possible values of fc.current_mode are: | |
1587 | * 0: Flow control is completely disabled | |
1588 | * 1: Rx flow control is enabled (we can receive pause frames, | |
1589 | * but not send pause frames). | |
bb3daa4a PW |
1590 | * 2: Tx flow control is enabled (we can send pause frames but |
1591 | * we do not support receiving pause frames). | |
11afc1b1 | 1592 | * 3: Both Rx and Tx flow control (symmetric) are enabled. |
8c7bea32 | 1593 | #ifdef CONFIG_DCB |
bb3daa4a | 1594 | * 4: Priority Flow Control is enabled. |
8c7bea32 | 1595 | #endif |
11afc1b1 PW |
1596 | * other: Invalid. |
1597 | */ | |
1598 | switch (hw->fc.current_mode) { | |
1599 | case ixgbe_fc_none: | |
620fa036 MC |
1600 | /* |
1601 | * Flow control is disabled by software override or autoneg. | |
1602 | * The code below will actually disable it in the HW. | |
1603 | */ | |
11afc1b1 PW |
1604 | break; |
1605 | case ixgbe_fc_rx_pause: | |
1606 | /* | |
1607 | * Rx Flow control is enabled and Tx Flow control is | |
1608 | * disabled by software override. Since there really | |
1609 | * isn't a way to advertise that we are capable of RX | |
1610 | * Pause ONLY, we will advertise that we support both | |
1611 | * symmetric and asymmetric Rx PAUSE. Later, we will | |
1612 | * disable the adapter's ability to send PAUSE frames. | |
1613 | */ | |
1614 | mflcn_reg |= IXGBE_MFLCN_RFCE; | |
1615 | break; | |
1616 | case ixgbe_fc_tx_pause: | |
1617 | /* | |
1618 | * Tx Flow control is enabled, and Rx Flow control is | |
1619 | * disabled by software override. | |
1620 | */ | |
1621 | fccfg_reg |= IXGBE_FCCFG_TFCE_802_3X; | |
1622 | break; | |
1623 | case ixgbe_fc_full: | |
1624 | /* Flow control (both Rx and Tx) is enabled by SW override. */ | |
1625 | mflcn_reg |= IXGBE_MFLCN_RFCE; | |
1626 | fccfg_reg |= IXGBE_FCCFG_TFCE_802_3X; | |
1627 | break; | |
bb3daa4a PW |
1628 | #ifdef CONFIG_DCB |
1629 | case ixgbe_fc_pfc: | |
1630 | goto out; | |
1631 | break; | |
620fa036 | 1632 | #endif /* CONFIG_DCB */ |
11afc1b1 PW |
1633 | default: |
1634 | hw_dbg(hw, "Flow control param set incorrectly\n"); | |
539e5f02 | 1635 | ret_val = IXGBE_ERR_CONFIG; |
11afc1b1 PW |
1636 | goto out; |
1637 | break; | |
1638 | } | |
1639 | ||
620fa036 | 1640 | /* Set 802.3x based flow control settings. */ |
2132d381 | 1641 | mflcn_reg |= IXGBE_MFLCN_DPF; |
11afc1b1 PW |
1642 | IXGBE_WRITE_REG(hw, IXGBE_MFLCN, mflcn_reg); |
1643 | IXGBE_WRITE_REG(hw, IXGBE_FCCFG, fccfg_reg); | |
1644 | ||
16b61beb JF |
1645 | rx_pba_size = IXGBE_READ_REG(hw, IXGBE_RXPBSIZE(packetbuf_num)); |
1646 | rx_pba_size >>= IXGBE_RXPBSIZE_SHIFT; | |
620fa036 | 1647 | |
16b61beb JF |
1648 | fcrth = (rx_pba_size - hw->fc.high_water) << 10; |
1649 | fcrtl = (rx_pba_size - hw->fc.low_water) << 10; | |
264857b8 | 1650 | |
16b61beb JF |
1651 | if (hw->fc.current_mode & ixgbe_fc_tx_pause) { |
1652 | fcrth |= IXGBE_FCRTH_FCEN; | |
1653 | if (hw->fc.send_xon) | |
1654 | fcrtl |= IXGBE_FCRTL_XONE; | |
11afc1b1 PW |
1655 | } |
1656 | ||
16b61beb JF |
1657 | IXGBE_WRITE_REG(hw, IXGBE_FCRTH_82599(packetbuf_num), fcrth); |
1658 | IXGBE_WRITE_REG(hw, IXGBE_FCRTL_82599(packetbuf_num), fcrtl); | |
1659 | ||
11afc1b1 | 1660 | /* Configure pause time (2 TCs per register) */ |
70b77628 | 1661 | reg = IXGBE_READ_REG(hw, IXGBE_FCTTV(packetbuf_num / 2)); |
11afc1b1 PW |
1662 | if ((packetbuf_num & 1) == 0) |
1663 | reg = (reg & 0xFFFF0000) | hw->fc.pause_time; | |
1664 | else | |
1665 | reg = (reg & 0x0000FFFF) | (hw->fc.pause_time << 16); | |
1666 | IXGBE_WRITE_REG(hw, IXGBE_FCTTV(packetbuf_num / 2), reg); | |
1667 | ||
1668 | IXGBE_WRITE_REG(hw, IXGBE_FCRTV, (hw->fc.pause_time >> 1)); | |
1669 | ||
1670 | out: | |
1671 | return ret_val; | |
1672 | } | |
1673 | ||
0ecc061d PWJ |
1674 | /** |
1675 | * ixgbe_fc_autoneg - Configure flow control | |
1676 | * @hw: pointer to hardware structure | |
1677 | * | |
620fa036 MC |
1678 | * Compares our advertised flow control capabilities to those advertised by |
1679 | * our link partner, and determines the proper flow control mode to use. | |
0ecc061d PWJ |
1680 | **/ |
1681 | s32 ixgbe_fc_autoneg(struct ixgbe_hw *hw) | |
1682 | { | |
0b0c2b31 | 1683 | s32 ret_val = IXGBE_ERR_FC_NOT_NEGOTIATED; |
620fa036 | 1684 | ixgbe_link_speed speed; |
620fa036 | 1685 | bool link_up; |
0ecc061d | 1686 | |
0b0c2b31 ET |
1687 | if (hw->fc.disable_fc_autoneg) |
1688 | goto out; | |
1689 | ||
0ecc061d | 1690 | /* |
620fa036 MC |
1691 | * AN should have completed when the cable was plugged in. |
1692 | * Look for reasons to bail out. Bail out if: | |
1693 | * - FC autoneg is disabled, or if | |
539e5f02 | 1694 | * - link is not up. |
620fa036 | 1695 | * |
539e5f02 | 1696 | * Since we're being called from an LSC, link is already known to be up. |
620fa036 | 1697 | * So use link_up_wait_to_complete=false. |
0ecc061d | 1698 | */ |
620fa036 | 1699 | hw->mac.ops.check_link(hw, &speed, &link_up, false); |
0b0c2b31 ET |
1700 | if (!link_up) { |
1701 | ret_val = IXGBE_ERR_FLOW_CONTROL; | |
0ecc061d PWJ |
1702 | goto out; |
1703 | } | |
1704 | ||
0b0c2b31 ET |
1705 | switch (hw->phy.media_type) { |
1706 | /* Autoneg flow control on fiber adapters */ | |
1707 | case ixgbe_media_type_fiber: | |
1708 | if (speed == IXGBE_LINK_SPEED_1GB_FULL) | |
1709 | ret_val = ixgbe_fc_autoneg_fiber(hw); | |
1710 | break; | |
000c486d | 1711 | |
0b0c2b31 ET |
1712 | /* Autoneg flow control on backplane adapters */ |
1713 | case ixgbe_media_type_backplane: | |
1714 | ret_val = ixgbe_fc_autoneg_backplane(hw); | |
1715 | break; | |
1716 | ||
1717 | /* Autoneg flow control on copper adapters */ | |
1718 | case ixgbe_media_type_copper: | |
1719 | if (ixgbe_device_supports_autoneg_fc(hw) == 0) | |
1720 | ret_val = ixgbe_fc_autoneg_copper(hw); | |
1721 | break; | |
1722 | ||
1723 | default: | |
1724 | break; | |
1725 | } | |
1726 | ||
1727 | out: | |
1728 | if (ret_val == 0) { | |
1729 | hw->fc.fc_was_autonegged = true; | |
1730 | } else { | |
1731 | hw->fc.fc_was_autonegged = false; | |
1732 | hw->fc.current_mode = hw->fc.requested_mode; | |
539e5f02 | 1733 | } |
0b0c2b31 ET |
1734 | return ret_val; |
1735 | } | |
1736 | ||
1737 | /** | |
1738 | * ixgbe_fc_autoneg_fiber - Enable flow control on 1 gig fiber | |
1739 | * @hw: pointer to hardware structure | |
1740 | * | |
1741 | * Enable flow control according on 1 gig fiber. | |
1742 | **/ | |
1743 | static s32 ixgbe_fc_autoneg_fiber(struct ixgbe_hw *hw) | |
1744 | { | |
1745 | u32 pcs_anadv_reg, pcs_lpab_reg, linkstat; | |
1746 | s32 ret_val; | |
539e5f02 PWJ |
1747 | |
1748 | /* | |
1749 | * On multispeed fiber at 1g, bail out if | |
1750 | * - link is up but AN did not complete, or if | |
1751 | * - link is up and AN completed but timed out | |
1752 | */ | |
0b0c2b31 ET |
1753 | |
1754 | linkstat = IXGBE_READ_REG(hw, IXGBE_PCS1GLSTA); | |
1755 | if (((linkstat & IXGBE_PCS1GLSTA_AN_COMPLETE) == 0) || | |
1756 | ((linkstat & IXGBE_PCS1GLSTA_AN_TIMED_OUT) == 1)) { | |
1757 | ret_val = IXGBE_ERR_FC_NOT_NEGOTIATED; | |
1758 | goto out; | |
539e5f02 PWJ |
1759 | } |
1760 | ||
0b0c2b31 ET |
1761 | pcs_anadv_reg = IXGBE_READ_REG(hw, IXGBE_PCS1GANA); |
1762 | pcs_lpab_reg = IXGBE_READ_REG(hw, IXGBE_PCS1GANLP); | |
1763 | ||
1764 | ret_val = ixgbe_negotiate_fc(hw, pcs_anadv_reg, | |
1765 | pcs_lpab_reg, IXGBE_PCS1GANA_SYM_PAUSE, | |
1766 | IXGBE_PCS1GANA_ASM_PAUSE, | |
1767 | IXGBE_PCS1GANA_SYM_PAUSE, | |
1768 | IXGBE_PCS1GANA_ASM_PAUSE); | |
1769 | ||
1770 | out: | |
1771 | return ret_val; | |
1772 | } | |
1773 | ||
1774 | /** | |
1775 | * ixgbe_fc_autoneg_backplane - Enable flow control IEEE clause 37 | |
1776 | * @hw: pointer to hardware structure | |
1777 | * | |
1778 | * Enable flow control according to IEEE clause 37. | |
1779 | **/ | |
1780 | static s32 ixgbe_fc_autoneg_backplane(struct ixgbe_hw *hw) | |
1781 | { | |
1782 | u32 links2, anlp1_reg, autoc_reg, links; | |
1783 | s32 ret_val; | |
1784 | ||
9bbe3a57 | 1785 | /* |
0b0c2b31 ET |
1786 | * On backplane, bail out if |
1787 | * - backplane autoneg was not completed, or if | |
1788 | * - we are 82599 and link partner is not AN enabled | |
9bbe3a57 | 1789 | */ |
0b0c2b31 ET |
1790 | links = IXGBE_READ_REG(hw, IXGBE_LINKS); |
1791 | if ((links & IXGBE_LINKS_KX_AN_COMP) == 0) { | |
9bbe3a57 PW |
1792 | hw->fc.fc_was_autonegged = false; |
1793 | hw->fc.current_mode = hw->fc.requested_mode; | |
0b0c2b31 | 1794 | ret_val = IXGBE_ERR_FC_NOT_NEGOTIATED; |
9bbe3a57 PW |
1795 | goto out; |
1796 | } | |
1797 | ||
0b0c2b31 ET |
1798 | if (hw->mac.type == ixgbe_mac_82599EB) { |
1799 | links2 = IXGBE_READ_REG(hw, IXGBE_LINKS2); | |
1800 | if ((links2 & IXGBE_LINKS2_AN_SUPPORTED) == 0) { | |
1801 | hw->fc.fc_was_autonegged = false; | |
1802 | hw->fc.current_mode = hw->fc.requested_mode; | |
1803 | ret_val = IXGBE_ERR_FC_NOT_NEGOTIATED; | |
1804 | goto out; | |
1805 | } | |
1806 | } | |
0ecc061d | 1807 | /* |
0b0c2b31 | 1808 | * Read the 10g AN autoc and LP ability registers and resolve |
0ecc061d PWJ |
1809 | * local flow control settings accordingly |
1810 | */ | |
0b0c2b31 ET |
1811 | autoc_reg = IXGBE_READ_REG(hw, IXGBE_AUTOC); |
1812 | anlp1_reg = IXGBE_READ_REG(hw, IXGBE_ANLP1); | |
539e5f02 | 1813 | |
0b0c2b31 ET |
1814 | ret_val = ixgbe_negotiate_fc(hw, autoc_reg, |
1815 | anlp1_reg, IXGBE_AUTOC_SYM_PAUSE, IXGBE_AUTOC_ASM_PAUSE, | |
1816 | IXGBE_ANLP1_SYM_PAUSE, IXGBE_ANLP1_ASM_PAUSE); | |
1817 | ||
1818 | out: | |
1819 | return ret_val; | |
1820 | } | |
1821 | ||
1822 | /** | |
1823 | * ixgbe_fc_autoneg_copper - Enable flow control IEEE clause 37 | |
1824 | * @hw: pointer to hardware structure | |
1825 | * | |
1826 | * Enable flow control according to IEEE clause 37. | |
1827 | **/ | |
1828 | static s32 ixgbe_fc_autoneg_copper(struct ixgbe_hw *hw) | |
1829 | { | |
1830 | u16 technology_ability_reg = 0; | |
1831 | u16 lp_technology_ability_reg = 0; | |
1832 | ||
1833 | hw->phy.ops.read_reg(hw, MDIO_AN_ADVERTISE, | |
1834 | MDIO_MMD_AN, | |
1835 | &technology_ability_reg); | |
1836 | hw->phy.ops.read_reg(hw, MDIO_AN_LPA, | |
1837 | MDIO_MMD_AN, | |
1838 | &lp_technology_ability_reg); | |
1839 | ||
1840 | return ixgbe_negotiate_fc(hw, (u32)technology_ability_reg, | |
1841 | (u32)lp_technology_ability_reg, | |
1842 | IXGBE_TAF_SYM_PAUSE, IXGBE_TAF_ASM_PAUSE, | |
1843 | IXGBE_TAF_SYM_PAUSE, IXGBE_TAF_ASM_PAUSE); | |
1844 | } | |
1845 | ||
1846 | /** | |
1847 | * ixgbe_negotiate_fc - Negotiate flow control | |
1848 | * @hw: pointer to hardware structure | |
1849 | * @adv_reg: flow control advertised settings | |
1850 | * @lp_reg: link partner's flow control settings | |
1851 | * @adv_sym: symmetric pause bit in advertisement | |
1852 | * @adv_asm: asymmetric pause bit in advertisement | |
1853 | * @lp_sym: symmetric pause bit in link partner advertisement | |
1854 | * @lp_asm: asymmetric pause bit in link partner advertisement | |
1855 | * | |
1856 | * Find the intersection between advertised settings and link partner's | |
1857 | * advertised settings | |
1858 | **/ | |
1859 | static s32 ixgbe_negotiate_fc(struct ixgbe_hw *hw, u32 adv_reg, u32 lp_reg, | |
1860 | u32 adv_sym, u32 adv_asm, u32 lp_sym, u32 lp_asm) | |
1861 | { | |
1862 | if ((!(adv_reg)) || (!(lp_reg))) | |
1863 | return IXGBE_ERR_FC_NOT_NEGOTIATED; | |
1864 | ||
1865 | if ((adv_reg & adv_sym) && (lp_reg & lp_sym)) { | |
0ecc061d | 1866 | /* |
0b0c2b31 ET |
1867 | * Now we need to check if the user selected Rx ONLY |
1868 | * of pause frames. In this case, we had to advertise | |
1869 | * FULL flow control because we could not advertise RX | |
1870 | * ONLY. Hence, we must now check to see if we need to | |
1871 | * turn OFF the TRANSMISSION of PAUSE frames. | |
0ecc061d | 1872 | */ |
0b0c2b31 ET |
1873 | if (hw->fc.requested_mode == ixgbe_fc_full) { |
1874 | hw->fc.current_mode = ixgbe_fc_full; | |
1875 | hw_dbg(hw, "Flow Control = FULL.\n"); | |
539e5f02 | 1876 | } else { |
0b0c2b31 ET |
1877 | hw->fc.current_mode = ixgbe_fc_rx_pause; |
1878 | hw_dbg(hw, "Flow Control=RX PAUSE frames only\n"); | |
0ecc061d | 1879 | } |
0b0c2b31 ET |
1880 | } else if (!(adv_reg & adv_sym) && (adv_reg & adv_asm) && |
1881 | (lp_reg & lp_sym) && (lp_reg & lp_asm)) { | |
1882 | hw->fc.current_mode = ixgbe_fc_tx_pause; | |
1883 | hw_dbg(hw, "Flow Control = TX PAUSE frames only.\n"); | |
1884 | } else if ((adv_reg & adv_sym) && (adv_reg & adv_asm) && | |
1885 | !(lp_reg & lp_sym) && (lp_reg & lp_asm)) { | |
1886 | hw->fc.current_mode = ixgbe_fc_rx_pause; | |
1887 | hw_dbg(hw, "Flow Control = RX PAUSE frames only.\n"); | |
1888 | } else { | |
1889 | hw->fc.current_mode = ixgbe_fc_none; | |
1890 | hw_dbg(hw, "Flow Control = NONE.\n"); | |
0ecc061d | 1891 | } |
0b0c2b31 | 1892 | return 0; |
0ecc061d PWJ |
1893 | } |
1894 | ||
11afc1b1 | 1895 | /** |
620fa036 | 1896 | * ixgbe_setup_fc - Set up flow control |
11afc1b1 PW |
1897 | * @hw: pointer to hardware structure |
1898 | * | |
620fa036 | 1899 | * Called at init time to set up flow control. |
11afc1b1 | 1900 | **/ |
7b25cdba | 1901 | static s32 ixgbe_setup_fc(struct ixgbe_hw *hw, s32 packetbuf_num) |
11afc1b1 PW |
1902 | { |
1903 | s32 ret_val = 0; | |
0b0c2b31 ET |
1904 | u32 reg = 0, reg_bp = 0; |
1905 | u16 reg_cu = 0; | |
11afc1b1 | 1906 | |
bb3daa4a PW |
1907 | #ifdef CONFIG_DCB |
1908 | if (hw->fc.requested_mode == ixgbe_fc_pfc) { | |
1909 | hw->fc.current_mode = hw->fc.requested_mode; | |
1910 | goto out; | |
1911 | } | |
1912 | ||
0b0c2b31 | 1913 | #endif /* CONFIG_DCB */ |
11afc1b1 PW |
1914 | /* Validate the packetbuf configuration */ |
1915 | if (packetbuf_num < 0 || packetbuf_num > 7) { | |
1916 | hw_dbg(hw, "Invalid packet buffer number [%d], expected range " | |
1917 | "is 0-7\n", packetbuf_num); | |
1918 | ret_val = IXGBE_ERR_INVALID_LINK_SETTINGS; | |
1919 | goto out; | |
1920 | } | |
1921 | ||
1922 | /* | |
1923 | * Validate the water mark configuration. Zero water marks are invalid | |
1924 | * because it causes the controller to just blast out fc packets. | |
1925 | */ | |
1926 | if (!hw->fc.low_water || !hw->fc.high_water || !hw->fc.pause_time) { | |
620fa036 MC |
1927 | hw_dbg(hw, "Invalid water mark configuration\n"); |
1928 | ret_val = IXGBE_ERR_INVALID_LINK_SETTINGS; | |
1929 | goto out; | |
11afc1b1 PW |
1930 | } |
1931 | ||
1932 | /* | |
1933 | * Validate the requested mode. Strict IEEE mode does not allow | |
620fa036 | 1934 | * ixgbe_fc_rx_pause because it will cause us to fail at UNH. |
11afc1b1 PW |
1935 | */ |
1936 | if (hw->fc.strict_ieee && hw->fc.requested_mode == ixgbe_fc_rx_pause) { | |
1937 | hw_dbg(hw, "ixgbe_fc_rx_pause not valid in strict " | |
1938 | "IEEE mode\n"); | |
1939 | ret_val = IXGBE_ERR_INVALID_LINK_SETTINGS; | |
1940 | goto out; | |
1941 | } | |
1942 | ||
1943 | /* | |
1944 | * 10gig parts do not have a word in the EEPROM to determine the | |
1945 | * default flow control setting, so we explicitly set it to full. | |
1946 | */ | |
1947 | if (hw->fc.requested_mode == ixgbe_fc_default) | |
1948 | hw->fc.requested_mode = ixgbe_fc_full; | |
1949 | ||
1950 | /* | |
0b0c2b31 ET |
1951 | * Set up the 1G and 10G flow control advertisement registers so the |
1952 | * HW will be able to do fc autoneg once the cable is plugged in. If | |
1953 | * we link at 10G, the 1G advertisement is harmless and vice versa. | |
11afc1b1 | 1954 | */ |
0b0c2b31 ET |
1955 | |
1956 | switch (hw->phy.media_type) { | |
1957 | case ixgbe_media_type_fiber: | |
1958 | case ixgbe_media_type_backplane: | |
1959 | reg = IXGBE_READ_REG(hw, IXGBE_PCS1GANA); | |
1960 | reg_bp = IXGBE_READ_REG(hw, IXGBE_AUTOC); | |
1961 | break; | |
1962 | ||
1963 | case ixgbe_media_type_copper: | |
1964 | hw->phy.ops.read_reg(hw, MDIO_AN_ADVERTISE, | |
1965 | MDIO_MMD_AN, ®_cu); | |
1966 | break; | |
1967 | ||
1968 | default: | |
1969 | ; | |
1970 | } | |
11afc1b1 | 1971 | |
620fa036 MC |
1972 | /* |
1973 | * The possible values of fc.requested_mode are: | |
1974 | * 0: Flow control is completely disabled | |
1975 | * 1: Rx flow control is enabled (we can receive pause frames, | |
1976 | * but not send pause frames). | |
1977 | * 2: Tx flow control is enabled (we can send pause frames but | |
1978 | * we do not support receiving pause frames). | |
1979 | * 3: Both Rx and Tx flow control (symmetric) are enabled. | |
1980 | #ifdef CONFIG_DCB | |
1981 | * 4: Priority Flow Control is enabled. | |
1982 | #endif | |
1983 | * other: Invalid. | |
1984 | */ | |
1985 | switch (hw->fc.requested_mode) { | |
1986 | case ixgbe_fc_none: | |
1987 | /* Flow control completely disabled by software override. */ | |
1988 | reg &= ~(IXGBE_PCS1GANA_SYM_PAUSE | IXGBE_PCS1GANA_ASM_PAUSE); | |
0b0c2b31 ET |
1989 | if (hw->phy.media_type == ixgbe_media_type_backplane) |
1990 | reg_bp &= ~(IXGBE_AUTOC_SYM_PAUSE | | |
1991 | IXGBE_AUTOC_ASM_PAUSE); | |
1992 | else if (hw->phy.media_type == ixgbe_media_type_copper) | |
1993 | reg_cu &= ~(IXGBE_TAF_SYM_PAUSE | IXGBE_TAF_ASM_PAUSE); | |
620fa036 MC |
1994 | break; |
1995 | case ixgbe_fc_rx_pause: | |
1996 | /* | |
1997 | * Rx Flow control is enabled and Tx Flow control is | |
1998 | * disabled by software override. Since there really | |
1999 | * isn't a way to advertise that we are capable of RX | |
2000 | * Pause ONLY, we will advertise that we support both | |
2001 | * symmetric and asymmetric Rx PAUSE. Later, we will | |
2002 | * disable the adapter's ability to send PAUSE frames. | |
2003 | */ | |
2004 | reg |= (IXGBE_PCS1GANA_SYM_PAUSE | IXGBE_PCS1GANA_ASM_PAUSE); | |
0b0c2b31 ET |
2005 | if (hw->phy.media_type == ixgbe_media_type_backplane) |
2006 | reg_bp |= (IXGBE_AUTOC_SYM_PAUSE | | |
2007 | IXGBE_AUTOC_ASM_PAUSE); | |
2008 | else if (hw->phy.media_type == ixgbe_media_type_copper) | |
2009 | reg_cu |= (IXGBE_TAF_SYM_PAUSE | IXGBE_TAF_ASM_PAUSE); | |
620fa036 MC |
2010 | break; |
2011 | case ixgbe_fc_tx_pause: | |
2012 | /* | |
2013 | * Tx Flow control is enabled, and Rx Flow control is | |
2014 | * disabled by software override. | |
2015 | */ | |
2016 | reg |= (IXGBE_PCS1GANA_ASM_PAUSE); | |
2017 | reg &= ~(IXGBE_PCS1GANA_SYM_PAUSE); | |
0b0c2b31 ET |
2018 | if (hw->phy.media_type == ixgbe_media_type_backplane) { |
2019 | reg_bp |= (IXGBE_AUTOC_ASM_PAUSE); | |
2020 | reg_bp &= ~(IXGBE_AUTOC_SYM_PAUSE); | |
2021 | } else if (hw->phy.media_type == ixgbe_media_type_copper) { | |
2022 | reg_cu |= (IXGBE_TAF_ASM_PAUSE); | |
2023 | reg_cu &= ~(IXGBE_TAF_SYM_PAUSE); | |
2024 | } | |
620fa036 MC |
2025 | break; |
2026 | case ixgbe_fc_full: | |
2027 | /* Flow control (both Rx and Tx) is enabled by SW override. */ | |
2028 | reg |= (IXGBE_PCS1GANA_SYM_PAUSE | IXGBE_PCS1GANA_ASM_PAUSE); | |
0b0c2b31 ET |
2029 | if (hw->phy.media_type == ixgbe_media_type_backplane) |
2030 | reg_bp |= (IXGBE_AUTOC_SYM_PAUSE | | |
2031 | IXGBE_AUTOC_ASM_PAUSE); | |
2032 | else if (hw->phy.media_type == ixgbe_media_type_copper) | |
2033 | reg_cu |= (IXGBE_TAF_SYM_PAUSE | IXGBE_TAF_ASM_PAUSE); | |
620fa036 MC |
2034 | break; |
2035 | #ifdef CONFIG_DCB | |
2036 | case ixgbe_fc_pfc: | |
11afc1b1 | 2037 | goto out; |
620fa036 MC |
2038 | break; |
2039 | #endif /* CONFIG_DCB */ | |
2040 | default: | |
2041 | hw_dbg(hw, "Flow control param set incorrectly\n"); | |
539e5f02 | 2042 | ret_val = IXGBE_ERR_CONFIG; |
620fa036 MC |
2043 | goto out; |
2044 | break; | |
2045 | } | |
2046 | ||
0b0c2b31 ET |
2047 | if (hw->mac.type != ixgbe_mac_X540) { |
2048 | /* | |
2049 | * Enable auto-negotiation between the MAC & PHY; | |
2050 | * the MAC will advertise clause 37 flow control. | |
2051 | */ | |
2052 | IXGBE_WRITE_REG(hw, IXGBE_PCS1GANA, reg); | |
2053 | reg = IXGBE_READ_REG(hw, IXGBE_PCS1GLCTL); | |
620fa036 | 2054 | |
0b0c2b31 ET |
2055 | /* Disable AN timeout */ |
2056 | if (hw->fc.strict_ieee) | |
2057 | reg &= ~IXGBE_PCS1GLCTL_AN_1G_TIMEOUT_EN; | |
11afc1b1 | 2058 | |
0b0c2b31 ET |
2059 | IXGBE_WRITE_REG(hw, IXGBE_PCS1GLCTL, reg); |
2060 | hw_dbg(hw, "Set up FC; PCS1GLCTL = 0x%08X\n", reg); | |
2061 | } | |
539e5f02 PWJ |
2062 | |
2063 | /* | |
0b0c2b31 ET |
2064 | * AUTOC restart handles negotiation of 1G and 10G on backplane |
2065 | * and copper. There is no need to set the PCS1GCTL register. | |
2066 | * | |
539e5f02 | 2067 | */ |
0b0c2b31 ET |
2068 | if (hw->phy.media_type == ixgbe_media_type_backplane) { |
2069 | reg_bp |= IXGBE_AUTOC_AN_RESTART; | |
2070 | IXGBE_WRITE_REG(hw, IXGBE_AUTOC, reg_bp); | |
2071 | } else if ((hw->phy.media_type == ixgbe_media_type_copper) && | |
2072 | (ixgbe_device_supports_autoneg_fc(hw) == 0)) { | |
2073 | hw->phy.ops.write_reg(hw, MDIO_AN_ADVERTISE, | |
2074 | MDIO_MMD_AN, reg_cu); | |
539e5f02 | 2075 | } |
539e5f02 | 2076 | |
0b0c2b31 | 2077 | hw_dbg(hw, "Set up FC; IXGBE_AUTOC = 0x%08X\n", reg); |
11afc1b1 PW |
2078 | out: |
2079 | return ret_val; | |
2080 | } | |
2081 | ||
9a799d71 AK |
2082 | /** |
2083 | * ixgbe_disable_pcie_master - Disable PCI-express master access | |
2084 | * @hw: pointer to hardware structure | |
2085 | * | |
2086 | * Disables PCI-Express master access and verifies there are no pending | |
2087 | * requests. IXGBE_ERR_MASTER_REQUESTS_PENDING is returned if master disable | |
2088 | * bit hasn't caused the master requests to be disabled, else 0 | |
2089 | * is returned signifying master requests disabled. | |
2090 | **/ | |
2091 | s32 ixgbe_disable_pcie_master(struct ixgbe_hw *hw) | |
2092 | { | |
a4297dc2 | 2093 | struct ixgbe_adapter *adapter = hw->back; |
c44ade9e JB |
2094 | u32 i; |
2095 | u32 reg_val; | |
2096 | u32 number_of_queues; | |
a4297dc2 ET |
2097 | s32 status = 0; |
2098 | u16 dev_status = 0; | |
2099 | ||
2100 | /* Just jump out if bus mastering is already disabled */ | |
2101 | if (!(IXGBE_READ_REG(hw, IXGBE_STATUS) & IXGBE_STATUS_GIO)) | |
2102 | goto out; | |
9a799d71 | 2103 | |
c44ade9e JB |
2104 | /* Disable the receive unit by stopping each queue */ |
2105 | number_of_queues = hw->mac.max_rx_queues; | |
2106 | for (i = 0; i < number_of_queues; i++) { | |
2107 | reg_val = IXGBE_READ_REG(hw, IXGBE_RXDCTL(i)); | |
2108 | if (reg_val & IXGBE_RXDCTL_ENABLE) { | |
2109 | reg_val &= ~IXGBE_RXDCTL_ENABLE; | |
2110 | IXGBE_WRITE_REG(hw, IXGBE_RXDCTL(i), reg_val); | |
2111 | } | |
2112 | } | |
2113 | ||
2114 | reg_val = IXGBE_READ_REG(hw, IXGBE_CTRL); | |
2115 | reg_val |= IXGBE_CTRL_GIO_DIS; | |
2116 | IXGBE_WRITE_REG(hw, IXGBE_CTRL, reg_val); | |
9a799d71 AK |
2117 | |
2118 | for (i = 0; i < IXGBE_PCI_MASTER_DISABLE_TIMEOUT; i++) { | |
a4297dc2 ET |
2119 | if (!(IXGBE_READ_REG(hw, IXGBE_STATUS) & IXGBE_STATUS_GIO)) |
2120 | goto check_device_status; | |
2121 | udelay(100); | |
2122 | } | |
2123 | ||
2124 | hw_dbg(hw, "GIO Master Disable bit didn't clear - requesting resets\n"); | |
2125 | status = IXGBE_ERR_MASTER_REQUESTS_PENDING; | |
2126 | ||
2127 | /* | |
2128 | * Before proceeding, make sure that the PCIe block does not have | |
2129 | * transactions pending. | |
2130 | */ | |
2131 | check_device_status: | |
2132 | for (i = 0; i < IXGBE_PCI_MASTER_DISABLE_TIMEOUT; i++) { | |
2133 | pci_read_config_word(adapter->pdev, IXGBE_PCI_DEVICE_STATUS, | |
2134 | &dev_status); | |
2135 | if (!(dev_status & IXGBE_PCI_DEVICE_STATUS_TRANSACTION_PENDING)) | |
9a799d71 | 2136 | break; |
9a799d71 AK |
2137 | udelay(100); |
2138 | } | |
2139 | ||
a4297dc2 ET |
2140 | if (i == IXGBE_PCI_MASTER_DISABLE_TIMEOUT) |
2141 | hw_dbg(hw, "PCIe transaction pending bit also did not clear.\n"); | |
2142 | else | |
2143 | goto out; | |
2144 | ||
2145 | /* | |
2146 | * Two consecutive resets are required via CTRL.RST per datasheet | |
2147 | * 5.2.5.3.2 Master Disable. We set a flag to inform the reset routine | |
2148 | * of this need. The first reset prevents new master requests from | |
2149 | * being issued by our device. We then must wait 1usec for any | |
2150 | * remaining completions from the PCIe bus to trickle in, and then reset | |
2151 | * again to clear out any effects they may have had on our device. | |
2152 | */ | |
2153 | hw->mac.flags |= IXGBE_FLAGS_DOUBLE_RESET_REQUIRED; | |
2154 | ||
2155 | out: | |
9a799d71 AK |
2156 | return status; |
2157 | } | |
2158 | ||
2159 | ||
2160 | /** | |
c44ade9e | 2161 | * ixgbe_acquire_swfw_sync - Acquire SWFW semaphore |
9a799d71 | 2162 | * @hw: pointer to hardware structure |
c44ade9e | 2163 | * @mask: Mask to specify which semaphore to acquire |
9a799d71 | 2164 | * |
da74cd4a | 2165 | * Acquires the SWFW semaphore through the GSSR register for the specified |
9a799d71 AK |
2166 | * function (CSR, PHY0, PHY1, EEPROM, Flash) |
2167 | **/ | |
2168 | s32 ixgbe_acquire_swfw_sync(struct ixgbe_hw *hw, u16 mask) | |
2169 | { | |
2170 | u32 gssr; | |
2171 | u32 swmask = mask; | |
2172 | u32 fwmask = mask << 5; | |
2173 | s32 timeout = 200; | |
2174 | ||
2175 | while (timeout) { | |
dbf893ee ET |
2176 | /* |
2177 | * SW EEPROM semaphore bit is used for access to all | |
2178 | * SW_FW_SYNC/GSSR bits (not just EEPROM) | |
2179 | */ | |
9a799d71 | 2180 | if (ixgbe_get_eeprom_semaphore(hw)) |
539e5f02 | 2181 | return IXGBE_ERR_SWFW_SYNC; |
9a799d71 AK |
2182 | |
2183 | gssr = IXGBE_READ_REG(hw, IXGBE_GSSR); | |
2184 | if (!(gssr & (fwmask | swmask))) | |
2185 | break; | |
2186 | ||
2187 | /* | |
2188 | * Firmware currently using resource (fwmask) or other software | |
2189 | * thread currently using resource (swmask) | |
2190 | */ | |
2191 | ixgbe_release_eeprom_semaphore(hw); | |
2192 | msleep(5); | |
2193 | timeout--; | |
2194 | } | |
2195 | ||
2196 | if (!timeout) { | |
dbf893ee | 2197 | hw_dbg(hw, "Driver can't access resource, SW_FW_SYNC timeout.\n"); |
539e5f02 | 2198 | return IXGBE_ERR_SWFW_SYNC; |
9a799d71 AK |
2199 | } |
2200 | ||
2201 | gssr |= swmask; | |
2202 | IXGBE_WRITE_REG(hw, IXGBE_GSSR, gssr); | |
2203 | ||
2204 | ixgbe_release_eeprom_semaphore(hw); | |
2205 | return 0; | |
2206 | } | |
2207 | ||
2208 | /** | |
2209 | * ixgbe_release_swfw_sync - Release SWFW semaphore | |
2210 | * @hw: pointer to hardware structure | |
c44ade9e | 2211 | * @mask: Mask to specify which semaphore to release |
9a799d71 | 2212 | * |
da74cd4a | 2213 | * Releases the SWFW semaphore through the GSSR register for the specified |
9a799d71 AK |
2214 | * function (CSR, PHY0, PHY1, EEPROM, Flash) |
2215 | **/ | |
2216 | void ixgbe_release_swfw_sync(struct ixgbe_hw *hw, u16 mask) | |
2217 | { | |
2218 | u32 gssr; | |
2219 | u32 swmask = mask; | |
2220 | ||
2221 | ixgbe_get_eeprom_semaphore(hw); | |
2222 | ||
2223 | gssr = IXGBE_READ_REG(hw, IXGBE_GSSR); | |
2224 | gssr &= ~swmask; | |
2225 | IXGBE_WRITE_REG(hw, IXGBE_GSSR, gssr); | |
2226 | ||
2227 | ixgbe_release_eeprom_semaphore(hw); | |
2228 | } | |
2229 | ||
11afc1b1 PW |
2230 | /** |
2231 | * ixgbe_enable_rx_dma_generic - Enable the Rx DMA unit | |
2232 | * @hw: pointer to hardware structure | |
2233 | * @regval: register value to write to RXCTRL | |
2234 | * | |
2235 | * Enables the Rx DMA unit | |
2236 | **/ | |
2237 | s32 ixgbe_enable_rx_dma_generic(struct ixgbe_hw *hw, u32 regval) | |
2238 | { | |
2239 | IXGBE_WRITE_REG(hw, IXGBE_RXCTRL, regval); | |
2240 | ||
2241 | return 0; | |
2242 | } | |
87c12017 PW |
2243 | |
2244 | /** | |
2245 | * ixgbe_blink_led_start_generic - Blink LED based on index. | |
2246 | * @hw: pointer to hardware structure | |
2247 | * @index: led number to blink | |
2248 | **/ | |
2249 | s32 ixgbe_blink_led_start_generic(struct ixgbe_hw *hw, u32 index) | |
2250 | { | |
2251 | ixgbe_link_speed speed = 0; | |
2252 | bool link_up = 0; | |
2253 | u32 autoc_reg = IXGBE_READ_REG(hw, IXGBE_AUTOC); | |
2254 | u32 led_reg = IXGBE_READ_REG(hw, IXGBE_LEDCTL); | |
2255 | ||
2256 | /* | |
2257 | * Link must be up to auto-blink the LEDs; | |
2258 | * Force it if link is down. | |
2259 | */ | |
2260 | hw->mac.ops.check_link(hw, &speed, &link_up, false); | |
2261 | ||
2262 | if (!link_up) { | |
50ac58ba | 2263 | autoc_reg |= IXGBE_AUTOC_AN_RESTART; |
87c12017 PW |
2264 | autoc_reg |= IXGBE_AUTOC_FLU; |
2265 | IXGBE_WRITE_REG(hw, IXGBE_AUTOC, autoc_reg); | |
2266 | msleep(10); | |
2267 | } | |
2268 | ||
2269 | led_reg &= ~IXGBE_LED_MODE_MASK(index); | |
2270 | led_reg |= IXGBE_LED_BLINK(index); | |
2271 | IXGBE_WRITE_REG(hw, IXGBE_LEDCTL, led_reg); | |
2272 | IXGBE_WRITE_FLUSH(hw); | |
2273 | ||
2274 | return 0; | |
2275 | } | |
2276 | ||
2277 | /** | |
2278 | * ixgbe_blink_led_stop_generic - Stop blinking LED based on index. | |
2279 | * @hw: pointer to hardware structure | |
2280 | * @index: led number to stop blinking | |
2281 | **/ | |
2282 | s32 ixgbe_blink_led_stop_generic(struct ixgbe_hw *hw, u32 index) | |
2283 | { | |
2284 | u32 autoc_reg = IXGBE_READ_REG(hw, IXGBE_AUTOC); | |
2285 | u32 led_reg = IXGBE_READ_REG(hw, IXGBE_LEDCTL); | |
2286 | ||
2287 | autoc_reg &= ~IXGBE_AUTOC_FLU; | |
2288 | autoc_reg |= IXGBE_AUTOC_AN_RESTART; | |
2289 | IXGBE_WRITE_REG(hw, IXGBE_AUTOC, autoc_reg); | |
2290 | ||
2291 | led_reg &= ~IXGBE_LED_MODE_MASK(index); | |
2292 | led_reg &= ~IXGBE_LED_BLINK(index); | |
2293 | led_reg |= IXGBE_LED_LINK_ACTIVE << IXGBE_LED_MODE_SHIFT(index); | |
2294 | IXGBE_WRITE_REG(hw, IXGBE_LEDCTL, led_reg); | |
2295 | IXGBE_WRITE_FLUSH(hw); | |
2296 | ||
2297 | return 0; | |
2298 | } | |
21ce849b MC |
2299 | |
2300 | /** | |
2301 | * ixgbe_get_san_mac_addr_offset - Get SAN MAC address offset from the EEPROM | |
2302 | * @hw: pointer to hardware structure | |
2303 | * @san_mac_offset: SAN MAC address offset | |
2304 | * | |
2305 | * This function will read the EEPROM location for the SAN MAC address | |
2306 | * pointer, and returns the value at that location. This is used in both | |
2307 | * get and set mac_addr routines. | |
2308 | **/ | |
2309 | static s32 ixgbe_get_san_mac_addr_offset(struct ixgbe_hw *hw, | |
2310 | u16 *san_mac_offset) | |
2311 | { | |
2312 | /* | |
2313 | * First read the EEPROM pointer to see if the MAC addresses are | |
2314 | * available. | |
2315 | */ | |
2316 | hw->eeprom.ops.read(hw, IXGBE_SAN_MAC_ADDR_PTR, san_mac_offset); | |
2317 | ||
2318 | return 0; | |
2319 | } | |
2320 | ||
2321 | /** | |
2322 | * ixgbe_get_san_mac_addr_generic - SAN MAC address retrieval from the EEPROM | |
2323 | * @hw: pointer to hardware structure | |
2324 | * @san_mac_addr: SAN MAC address | |
2325 | * | |
2326 | * Reads the SAN MAC address from the EEPROM, if it's available. This is | |
2327 | * per-port, so set_lan_id() must be called before reading the addresses. | |
2328 | * set_lan_id() is called by identify_sfp(), but this cannot be relied | |
2329 | * upon for non-SFP connections, so we must call it here. | |
2330 | **/ | |
2331 | s32 ixgbe_get_san_mac_addr_generic(struct ixgbe_hw *hw, u8 *san_mac_addr) | |
2332 | { | |
2333 | u16 san_mac_data, san_mac_offset; | |
2334 | u8 i; | |
2335 | ||
2336 | /* | |
2337 | * First read the EEPROM pointer to see if the MAC addresses are | |
2338 | * available. If they're not, no point in calling set_lan_id() here. | |
2339 | */ | |
2340 | ixgbe_get_san_mac_addr_offset(hw, &san_mac_offset); | |
2341 | ||
2342 | if ((san_mac_offset == 0) || (san_mac_offset == 0xFFFF)) { | |
2343 | /* | |
2344 | * No addresses available in this EEPROM. It's not an | |
2345 | * error though, so just wipe the local address and return. | |
2346 | */ | |
2347 | for (i = 0; i < 6; i++) | |
2348 | san_mac_addr[i] = 0xFF; | |
2349 | ||
2350 | goto san_mac_addr_out; | |
2351 | } | |
2352 | ||
2353 | /* make sure we know which port we need to program */ | |
2354 | hw->mac.ops.set_lan_id(hw); | |
2355 | /* apply the port offset to the address offset */ | |
2356 | (hw->bus.func) ? (san_mac_offset += IXGBE_SAN_MAC_ADDR_PORT1_OFFSET) : | |
2357 | (san_mac_offset += IXGBE_SAN_MAC_ADDR_PORT0_OFFSET); | |
2358 | for (i = 0; i < 3; i++) { | |
2359 | hw->eeprom.ops.read(hw, san_mac_offset, &san_mac_data); | |
2360 | san_mac_addr[i * 2] = (u8)(san_mac_data); | |
2361 | san_mac_addr[i * 2 + 1] = (u8)(san_mac_data >> 8); | |
2362 | san_mac_offset++; | |
2363 | } | |
2364 | ||
2365 | san_mac_addr_out: | |
2366 | return 0; | |
2367 | } | |
2368 | ||
2369 | /** | |
2370 | * ixgbe_get_pcie_msix_count_generic - Gets MSI-X vector count | |
2371 | * @hw: pointer to hardware structure | |
2372 | * | |
2373 | * Read PCIe configuration space, and get the MSI-X vector count from | |
2374 | * the capabilities table. | |
2375 | **/ | |
2376 | u32 ixgbe_get_pcie_msix_count_generic(struct ixgbe_hw *hw) | |
2377 | { | |
2378 | struct ixgbe_adapter *adapter = hw->back; | |
2379 | u16 msix_count; | |
2380 | pci_read_config_word(adapter->pdev, IXGBE_PCIE_MSIX_82599_CAPS, | |
2381 | &msix_count); | |
2382 | msix_count &= IXGBE_PCIE_MSIX_TBL_SZ_MASK; | |
2383 | ||
2384 | /* MSI-X count is zero-based in HW, so increment to give proper value */ | |
2385 | msix_count++; | |
2386 | ||
2387 | return msix_count; | |
2388 | } | |
2389 | ||
2390 | /** | |
2391 | * ixgbe_clear_vmdq_generic - Disassociate a VMDq pool index from a rx address | |
2392 | * @hw: pointer to hardware struct | |
2393 | * @rar: receive address register index to disassociate | |
2394 | * @vmdq: VMDq pool index to remove from the rar | |
2395 | **/ | |
2396 | s32 ixgbe_clear_vmdq_generic(struct ixgbe_hw *hw, u32 rar, u32 vmdq) | |
2397 | { | |
2398 | u32 mpsar_lo, mpsar_hi; | |
2399 | u32 rar_entries = hw->mac.num_rar_entries; | |
2400 | ||
c700f4e6 ET |
2401 | /* Make sure we are using a valid rar index range */ |
2402 | if (rar >= rar_entries) { | |
2403 | hw_dbg(hw, "RAR index %d is out of range.\n", rar); | |
2404 | return IXGBE_ERR_INVALID_ARGUMENT; | |
2405 | } | |
21ce849b | 2406 | |
c700f4e6 ET |
2407 | mpsar_lo = IXGBE_READ_REG(hw, IXGBE_MPSAR_LO(rar)); |
2408 | mpsar_hi = IXGBE_READ_REG(hw, IXGBE_MPSAR_HI(rar)); | |
21ce849b | 2409 | |
c700f4e6 ET |
2410 | if (!mpsar_lo && !mpsar_hi) |
2411 | goto done; | |
21ce849b | 2412 | |
c700f4e6 ET |
2413 | if (vmdq == IXGBE_CLEAR_VMDQ_ALL) { |
2414 | if (mpsar_lo) { | |
2415 | IXGBE_WRITE_REG(hw, IXGBE_MPSAR_LO(rar), 0); | |
2416 | mpsar_lo = 0; | |
2417 | } | |
2418 | if (mpsar_hi) { | |
2419 | IXGBE_WRITE_REG(hw, IXGBE_MPSAR_HI(rar), 0); | |
2420 | mpsar_hi = 0; | |
2421 | } | |
2422 | } else if (vmdq < 32) { | |
2423 | mpsar_lo &= ~(1 << vmdq); | |
2424 | IXGBE_WRITE_REG(hw, IXGBE_MPSAR_LO(rar), mpsar_lo); | |
21ce849b | 2425 | } else { |
c700f4e6 ET |
2426 | mpsar_hi &= ~(1 << (vmdq - 32)); |
2427 | IXGBE_WRITE_REG(hw, IXGBE_MPSAR_HI(rar), mpsar_hi); | |
21ce849b MC |
2428 | } |
2429 | ||
c700f4e6 ET |
2430 | /* was that the last pool using this rar? */ |
2431 | if (mpsar_lo == 0 && mpsar_hi == 0 && rar != 0) | |
2432 | hw->mac.ops.clear_rar(hw, rar); | |
21ce849b MC |
2433 | done: |
2434 | return 0; | |
2435 | } | |
2436 | ||
2437 | /** | |
2438 | * ixgbe_set_vmdq_generic - Associate a VMDq pool index with a rx address | |
2439 | * @hw: pointer to hardware struct | |
2440 | * @rar: receive address register index to associate with a VMDq index | |
2441 | * @vmdq: VMDq pool index | |
2442 | **/ | |
2443 | s32 ixgbe_set_vmdq_generic(struct ixgbe_hw *hw, u32 rar, u32 vmdq) | |
2444 | { | |
2445 | u32 mpsar; | |
2446 | u32 rar_entries = hw->mac.num_rar_entries; | |
2447 | ||
c700f4e6 ET |
2448 | /* Make sure we are using a valid rar index range */ |
2449 | if (rar >= rar_entries) { | |
21ce849b | 2450 | hw_dbg(hw, "RAR index %d is out of range.\n", rar); |
c700f4e6 ET |
2451 | return IXGBE_ERR_INVALID_ARGUMENT; |
2452 | } | |
2453 | ||
2454 | if (vmdq < 32) { | |
2455 | mpsar = IXGBE_READ_REG(hw, IXGBE_MPSAR_LO(rar)); | |
2456 | mpsar |= 1 << vmdq; | |
2457 | IXGBE_WRITE_REG(hw, IXGBE_MPSAR_LO(rar), mpsar); | |
2458 | } else { | |
2459 | mpsar = IXGBE_READ_REG(hw, IXGBE_MPSAR_HI(rar)); | |
2460 | mpsar |= 1 << (vmdq - 32); | |
2461 | IXGBE_WRITE_REG(hw, IXGBE_MPSAR_HI(rar), mpsar); | |
21ce849b MC |
2462 | } |
2463 | return 0; | |
2464 | } | |
2465 | ||
2466 | /** | |
2467 | * ixgbe_init_uta_tables_generic - Initialize the Unicast Table Array | |
2468 | * @hw: pointer to hardware structure | |
2469 | **/ | |
2470 | s32 ixgbe_init_uta_tables_generic(struct ixgbe_hw *hw) | |
2471 | { | |
2472 | int i; | |
2473 | ||
21ce849b MC |
2474 | for (i = 0; i < 128; i++) |
2475 | IXGBE_WRITE_REG(hw, IXGBE_UTA(i), 0); | |
2476 | ||
2477 | return 0; | |
2478 | } | |
2479 | ||
2480 | /** | |
2481 | * ixgbe_find_vlvf_slot - find the vlanid or the first empty slot | |
2482 | * @hw: pointer to hardware structure | |
2483 | * @vlan: VLAN id to write to VLAN filter | |
2484 | * | |
2485 | * return the VLVF index where this VLAN id should be placed | |
2486 | * | |
2487 | **/ | |
5d5b7c39 | 2488 | static s32 ixgbe_find_vlvf_slot(struct ixgbe_hw *hw, u32 vlan) |
21ce849b MC |
2489 | { |
2490 | u32 bits = 0; | |
2491 | u32 first_empty_slot = 0; | |
2492 | s32 regindex; | |
2493 | ||
2494 | /* short cut the special case */ | |
2495 | if (vlan == 0) | |
2496 | return 0; | |
2497 | ||
2498 | /* | |
2499 | * Search for the vlan id in the VLVF entries. Save off the first empty | |
2500 | * slot found along the way | |
2501 | */ | |
2502 | for (regindex = 1; regindex < IXGBE_VLVF_ENTRIES; regindex++) { | |
2503 | bits = IXGBE_READ_REG(hw, IXGBE_VLVF(regindex)); | |
2504 | if (!bits && !(first_empty_slot)) | |
2505 | first_empty_slot = regindex; | |
2506 | else if ((bits & 0x0FFF) == vlan) | |
2507 | break; | |
2508 | } | |
2509 | ||
2510 | /* | |
2511 | * If regindex is less than IXGBE_VLVF_ENTRIES, then we found the vlan | |
2512 | * in the VLVF. Else use the first empty VLVF register for this | |
2513 | * vlan id. | |
2514 | */ | |
2515 | if (regindex >= IXGBE_VLVF_ENTRIES) { | |
2516 | if (first_empty_slot) | |
2517 | regindex = first_empty_slot; | |
2518 | else { | |
2519 | hw_dbg(hw, "No space in VLVF.\n"); | |
2520 | regindex = IXGBE_ERR_NO_SPACE; | |
2521 | } | |
2522 | } | |
2523 | ||
2524 | return regindex; | |
2525 | } | |
2526 | ||
2527 | /** | |
2528 | * ixgbe_set_vfta_generic - Set VLAN filter table | |
2529 | * @hw: pointer to hardware structure | |
2530 | * @vlan: VLAN id to write to VLAN filter | |
2531 | * @vind: VMDq output index that maps queue to VLAN id in VFVFB | |
2532 | * @vlan_on: boolean flag to turn on/off VLAN in VFVF | |
2533 | * | |
2534 | * Turn on/off specified VLAN in the VLAN filter table. | |
2535 | **/ | |
2536 | s32 ixgbe_set_vfta_generic(struct ixgbe_hw *hw, u32 vlan, u32 vind, | |
2537 | bool vlan_on) | |
2538 | { | |
2539 | s32 regindex; | |
2540 | u32 bitindex; | |
2541 | u32 vfta; | |
2542 | u32 bits; | |
2543 | u32 vt; | |
2544 | u32 targetbit; | |
2545 | bool vfta_changed = false; | |
2546 | ||
2547 | if (vlan > 4095) | |
2548 | return IXGBE_ERR_PARAM; | |
2549 | ||
2550 | /* | |
2551 | * this is a 2 part operation - first the VFTA, then the | |
2552 | * VLVF and VLVFB if VT Mode is set | |
2553 | * We don't write the VFTA until we know the VLVF part succeeded. | |
2554 | */ | |
2555 | ||
2556 | /* Part 1 | |
2557 | * The VFTA is a bitstring made up of 128 32-bit registers | |
2558 | * that enable the particular VLAN id, much like the MTA: | |
2559 | * bits[11-5]: which register | |
2560 | * bits[4-0]: which bit in the register | |
2561 | */ | |
2562 | regindex = (vlan >> 5) & 0x7F; | |
2563 | bitindex = vlan & 0x1F; | |
2564 | targetbit = (1 << bitindex); | |
2565 | vfta = IXGBE_READ_REG(hw, IXGBE_VFTA(regindex)); | |
2566 | ||
2567 | if (vlan_on) { | |
2568 | if (!(vfta & targetbit)) { | |
2569 | vfta |= targetbit; | |
2570 | vfta_changed = true; | |
2571 | } | |
2572 | } else { | |
2573 | if ((vfta & targetbit)) { | |
2574 | vfta &= ~targetbit; | |
2575 | vfta_changed = true; | |
2576 | } | |
2577 | } | |
2578 | ||
2579 | /* Part 2 | |
2580 | * If VT Mode is set | |
2581 | * Either vlan_on | |
2582 | * make sure the vlan is in VLVF | |
2583 | * set the vind bit in the matching VLVFB | |
2584 | * Or !vlan_on | |
2585 | * clear the pool bit and possibly the vind | |
2586 | */ | |
2587 | vt = IXGBE_READ_REG(hw, IXGBE_VT_CTL); | |
2588 | if (vt & IXGBE_VT_CTL_VT_ENABLE) { | |
2589 | s32 vlvf_index; | |
2590 | ||
2591 | vlvf_index = ixgbe_find_vlvf_slot(hw, vlan); | |
2592 | if (vlvf_index < 0) | |
2593 | return vlvf_index; | |
2594 | ||
2595 | if (vlan_on) { | |
2596 | /* set the pool bit */ | |
2597 | if (vind < 32) { | |
2598 | bits = IXGBE_READ_REG(hw, | |
2599 | IXGBE_VLVFB(vlvf_index*2)); | |
2600 | bits |= (1 << vind); | |
2601 | IXGBE_WRITE_REG(hw, | |
2602 | IXGBE_VLVFB(vlvf_index*2), | |
2603 | bits); | |
2604 | } else { | |
2605 | bits = IXGBE_READ_REG(hw, | |
2606 | IXGBE_VLVFB((vlvf_index*2)+1)); | |
2607 | bits |= (1 << (vind-32)); | |
2608 | IXGBE_WRITE_REG(hw, | |
2609 | IXGBE_VLVFB((vlvf_index*2)+1), | |
2610 | bits); | |
2611 | } | |
2612 | } else { | |
2613 | /* clear the pool bit */ | |
2614 | if (vind < 32) { | |
2615 | bits = IXGBE_READ_REG(hw, | |
2616 | IXGBE_VLVFB(vlvf_index*2)); | |
2617 | bits &= ~(1 << vind); | |
2618 | IXGBE_WRITE_REG(hw, | |
2619 | IXGBE_VLVFB(vlvf_index*2), | |
2620 | bits); | |
2621 | bits |= IXGBE_READ_REG(hw, | |
2622 | IXGBE_VLVFB((vlvf_index*2)+1)); | |
2623 | } else { | |
2624 | bits = IXGBE_READ_REG(hw, | |
2625 | IXGBE_VLVFB((vlvf_index*2)+1)); | |
2626 | bits &= ~(1 << (vind-32)); | |
2627 | IXGBE_WRITE_REG(hw, | |
2628 | IXGBE_VLVFB((vlvf_index*2)+1), | |
2629 | bits); | |
2630 | bits |= IXGBE_READ_REG(hw, | |
2631 | IXGBE_VLVFB(vlvf_index*2)); | |
2632 | } | |
2633 | } | |
2634 | ||
2635 | /* | |
2636 | * If there are still bits set in the VLVFB registers | |
2637 | * for the VLAN ID indicated we need to see if the | |
2638 | * caller is requesting that we clear the VFTA entry bit. | |
2639 | * If the caller has requested that we clear the VFTA | |
2640 | * entry bit but there are still pools/VFs using this VLAN | |
2641 | * ID entry then ignore the request. We're not worried | |
2642 | * about the case where we're turning the VFTA VLAN ID | |
2643 | * entry bit on, only when requested to turn it off as | |
2644 | * there may be multiple pools and/or VFs using the | |
2645 | * VLAN ID entry. In that case we cannot clear the | |
2646 | * VFTA bit until all pools/VFs using that VLAN ID have also | |
2647 | * been cleared. This will be indicated by "bits" being | |
2648 | * zero. | |
2649 | */ | |
2650 | if (bits) { | |
2651 | IXGBE_WRITE_REG(hw, IXGBE_VLVF(vlvf_index), | |
2652 | (IXGBE_VLVF_VIEN | vlan)); | |
2653 | if (!vlan_on) { | |
2654 | /* someone wants to clear the vfta entry | |
2655 | * but some pools/VFs are still using it. | |
2656 | * Ignore it. */ | |
2657 | vfta_changed = false; | |
2658 | } | |
2659 | } | |
2660 | else | |
2661 | IXGBE_WRITE_REG(hw, IXGBE_VLVF(vlvf_index), 0); | |
2662 | } | |
2663 | ||
2664 | if (vfta_changed) | |
2665 | IXGBE_WRITE_REG(hw, IXGBE_VFTA(regindex), vfta); | |
2666 | ||
2667 | return 0; | |
2668 | } | |
2669 | ||
2670 | /** | |
2671 | * ixgbe_clear_vfta_generic - Clear VLAN filter table | |
2672 | * @hw: pointer to hardware structure | |
2673 | * | |
2674 | * Clears the VLAN filer table, and the VMDq index associated with the filter | |
2675 | **/ | |
2676 | s32 ixgbe_clear_vfta_generic(struct ixgbe_hw *hw) | |
2677 | { | |
2678 | u32 offset; | |
2679 | ||
2680 | for (offset = 0; offset < hw->mac.vft_size; offset++) | |
2681 | IXGBE_WRITE_REG(hw, IXGBE_VFTA(offset), 0); | |
2682 | ||
2683 | for (offset = 0; offset < IXGBE_VLVF_ENTRIES; offset++) { | |
2684 | IXGBE_WRITE_REG(hw, IXGBE_VLVF(offset), 0); | |
2685 | IXGBE_WRITE_REG(hw, IXGBE_VLVFB(offset*2), 0); | |
2686 | IXGBE_WRITE_REG(hw, IXGBE_VLVFB((offset*2)+1), 0); | |
2687 | } | |
2688 | ||
2689 | return 0; | |
2690 | } | |
2691 | ||
2692 | /** | |
2693 | * ixgbe_check_mac_link_generic - Determine link and speed status | |
2694 | * @hw: pointer to hardware structure | |
2695 | * @speed: pointer to link speed | |
2696 | * @link_up: true when link is up | |
2697 | * @link_up_wait_to_complete: bool used to wait for link up or not | |
2698 | * | |
2699 | * Reads the links register to determine if link is up and the current speed | |
2700 | **/ | |
2701 | s32 ixgbe_check_mac_link_generic(struct ixgbe_hw *hw, ixgbe_link_speed *speed, | |
8c7bea32 | 2702 | bool *link_up, bool link_up_wait_to_complete) |
21ce849b | 2703 | { |
48de36c5 | 2704 | u32 links_reg, links_orig; |
21ce849b MC |
2705 | u32 i; |
2706 | ||
48de36c5 ET |
2707 | /* clear the old state */ |
2708 | links_orig = IXGBE_READ_REG(hw, IXGBE_LINKS); | |
2709 | ||
21ce849b | 2710 | links_reg = IXGBE_READ_REG(hw, IXGBE_LINKS); |
48de36c5 ET |
2711 | |
2712 | if (links_orig != links_reg) { | |
2713 | hw_dbg(hw, "LINKS changed from %08X to %08X\n", | |
2714 | links_orig, links_reg); | |
2715 | } | |
2716 | ||
21ce849b MC |
2717 | if (link_up_wait_to_complete) { |
2718 | for (i = 0; i < IXGBE_LINK_UP_TIME; i++) { | |
2719 | if (links_reg & IXGBE_LINKS_UP) { | |
2720 | *link_up = true; | |
2721 | break; | |
2722 | } else { | |
2723 | *link_up = false; | |
2724 | } | |
2725 | msleep(100); | |
2726 | links_reg = IXGBE_READ_REG(hw, IXGBE_LINKS); | |
2727 | } | |
2728 | } else { | |
2729 | if (links_reg & IXGBE_LINKS_UP) | |
2730 | *link_up = true; | |
2731 | else | |
2732 | *link_up = false; | |
2733 | } | |
2734 | ||
2735 | if ((links_reg & IXGBE_LINKS_SPEED_82599) == | |
2736 | IXGBE_LINKS_SPEED_10G_82599) | |
2737 | *speed = IXGBE_LINK_SPEED_10GB_FULL; | |
2738 | else if ((links_reg & IXGBE_LINKS_SPEED_82599) == | |
63d778df | 2739 | IXGBE_LINKS_SPEED_1G_82599) |
21ce849b | 2740 | *speed = IXGBE_LINK_SPEED_1GB_FULL; |
63d778df ET |
2741 | else if ((links_reg & IXGBE_LINKS_SPEED_82599) == |
2742 | IXGBE_LINKS_SPEED_100_82599) | |
21ce849b | 2743 | *speed = IXGBE_LINK_SPEED_100_FULL; |
63d778df ET |
2744 | else |
2745 | *speed = IXGBE_LINK_SPEED_UNKNOWN; | |
21ce849b MC |
2746 | |
2747 | /* if link is down, zero out the current_mode */ | |
2748 | if (*link_up == false) { | |
2749 | hw->fc.current_mode = ixgbe_fc_none; | |
2750 | hw->fc.fc_was_autonegged = false; | |
2751 | } | |
2752 | ||
2753 | return 0; | |
2754 | } | |
a391f1d5 DS |
2755 | |
2756 | /** | |
2757 | * ixgbe_get_wwn_prefix_generic Get alternative WWNN/WWPN prefix from | |
2758 | * the EEPROM | |
2759 | * @hw: pointer to hardware structure | |
2760 | * @wwnn_prefix: the alternative WWNN prefix | |
2761 | * @wwpn_prefix: the alternative WWPN prefix | |
2762 | * | |
2763 | * This function will read the EEPROM from the alternative SAN MAC address | |
2764 | * block to check the support for the alternative WWNN/WWPN prefix support. | |
2765 | **/ | |
2766 | s32 ixgbe_get_wwn_prefix_generic(struct ixgbe_hw *hw, u16 *wwnn_prefix, | |
2767 | u16 *wwpn_prefix) | |
2768 | { | |
2769 | u16 offset, caps; | |
2770 | u16 alt_san_mac_blk_offset; | |
2771 | ||
2772 | /* clear output first */ | |
2773 | *wwnn_prefix = 0xFFFF; | |
2774 | *wwpn_prefix = 0xFFFF; | |
2775 | ||
2776 | /* check if alternative SAN MAC is supported */ | |
2777 | hw->eeprom.ops.read(hw, IXGBE_ALT_SAN_MAC_ADDR_BLK_PTR, | |
2778 | &alt_san_mac_blk_offset); | |
2779 | ||
2780 | if ((alt_san_mac_blk_offset == 0) || | |
2781 | (alt_san_mac_blk_offset == 0xFFFF)) | |
2782 | goto wwn_prefix_out; | |
2783 | ||
2784 | /* check capability in alternative san mac address block */ | |
2785 | offset = alt_san_mac_blk_offset + IXGBE_ALT_SAN_MAC_ADDR_CAPS_OFFSET; | |
2786 | hw->eeprom.ops.read(hw, offset, &caps); | |
2787 | if (!(caps & IXGBE_ALT_SAN_MAC_ADDR_CAPS_ALTWWN)) | |
2788 | goto wwn_prefix_out; | |
2789 | ||
2790 | /* get the corresponding prefix for WWNN/WWPN */ | |
2791 | offset = alt_san_mac_blk_offset + IXGBE_ALT_SAN_MAC_ADDR_WWNN_OFFSET; | |
2792 | hw->eeprom.ops.read(hw, offset, wwnn_prefix); | |
2793 | ||
2794 | offset = alt_san_mac_blk_offset + IXGBE_ALT_SAN_MAC_ADDR_WWPN_OFFSET; | |
2795 | hw->eeprom.ops.read(hw, offset, wwpn_prefix); | |
2796 | ||
2797 | wwn_prefix_out: | |
2798 | return 0; | |
2799 | } | |
a985b6c3 | 2800 | |
0b0c2b31 ET |
2801 | /** |
2802 | * ixgbe_device_supports_autoneg_fc - Check if phy supports autoneg flow | |
2803 | * control | |
2804 | * @hw: pointer to hardware structure | |
2805 | * | |
2806 | * There are several phys that do not support autoneg flow control. This | |
2807 | * function check the device id to see if the associated phy supports | |
2808 | * autoneg flow control. | |
2809 | **/ | |
2810 | static s32 ixgbe_device_supports_autoneg_fc(struct ixgbe_hw *hw) | |
2811 | { | |
2812 | ||
2813 | switch (hw->device_id) { | |
2814 | case IXGBE_DEV_ID_X540T: | |
2815 | return 0; | |
2816 | case IXGBE_DEV_ID_82599_T3_LOM: | |
2817 | return 0; | |
2818 | default: | |
2819 | return IXGBE_ERR_FC_NOT_SUPPORTED; | |
2820 | } | |
2821 | } | |
2822 | ||
a985b6c3 GR |
2823 | /** |
2824 | * ixgbe_set_mac_anti_spoofing - Enable/Disable MAC anti-spoofing | |
2825 | * @hw: pointer to hardware structure | |
2826 | * @enable: enable or disable switch for anti-spoofing | |
2827 | * @pf: Physical Function pool - do not enable anti-spoofing for the PF | |
2828 | * | |
2829 | **/ | |
2830 | void ixgbe_set_mac_anti_spoofing(struct ixgbe_hw *hw, bool enable, int pf) | |
2831 | { | |
2832 | int j; | |
2833 | int pf_target_reg = pf >> 3; | |
2834 | int pf_target_shift = pf % 8; | |
2835 | u32 pfvfspoof = 0; | |
2836 | ||
2837 | if (hw->mac.type == ixgbe_mac_82598EB) | |
2838 | return; | |
2839 | ||
2840 | if (enable) | |
2841 | pfvfspoof = IXGBE_SPOOF_MACAS_MASK; | |
2842 | ||
2843 | /* | |
2844 | * PFVFSPOOF register array is size 8 with 8 bits assigned to | |
2845 | * MAC anti-spoof enables in each register array element. | |
2846 | */ | |
2847 | for (j = 0; j < IXGBE_PFVFSPOOF_REG_COUNT; j++) | |
2848 | IXGBE_WRITE_REG(hw, IXGBE_PFVFSPOOF(j), pfvfspoof); | |
2849 | ||
2850 | /* If not enabling anti-spoofing then done */ | |
2851 | if (!enable) | |
2852 | return; | |
2853 | ||
2854 | /* | |
2855 | * The PF should be allowed to spoof so that it can support | |
2856 | * emulation mode NICs. Reset the bit assigned to the PF | |
2857 | */ | |
2858 | pfvfspoof = IXGBE_READ_REG(hw, IXGBE_PFVFSPOOF(pf_target_reg)); | |
2859 | pfvfspoof ^= (1 << pf_target_shift); | |
2860 | IXGBE_WRITE_REG(hw, IXGBE_PFVFSPOOF(pf_target_reg), pfvfspoof); | |
2861 | } | |
2862 | ||
2863 | /** | |
2864 | * ixgbe_set_vlan_anti_spoofing - Enable/Disable VLAN anti-spoofing | |
2865 | * @hw: pointer to hardware structure | |
2866 | * @enable: enable or disable switch for VLAN anti-spoofing | |
2867 | * @pf: Virtual Function pool - VF Pool to set for VLAN anti-spoofing | |
2868 | * | |
2869 | **/ | |
2870 | void ixgbe_set_vlan_anti_spoofing(struct ixgbe_hw *hw, bool enable, int vf) | |
2871 | { | |
2872 | int vf_target_reg = vf >> 3; | |
2873 | int vf_target_shift = vf % 8 + IXGBE_SPOOF_VLANAS_SHIFT; | |
2874 | u32 pfvfspoof; | |
2875 | ||
2876 | if (hw->mac.type == ixgbe_mac_82598EB) | |
2877 | return; | |
2878 | ||
2879 | pfvfspoof = IXGBE_READ_REG(hw, IXGBE_PFVFSPOOF(vf_target_reg)); | |
2880 | if (enable) | |
2881 | pfvfspoof |= (1 << vf_target_shift); | |
2882 | else | |
2883 | pfvfspoof &= ~(1 << vf_target_shift); | |
2884 | IXGBE_WRITE_REG(hw, IXGBE_PFVFSPOOF(vf_target_reg), pfvfspoof); | |
2885 | } |