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c85eb619 EG |
1 | /****************************************************************************** |
2 | * | |
3 | * This file is provided under a dual BSD/GPLv2 license. When using or | |
4 | * redistributing this file, you may do so under either license. | |
5 | * | |
6 | * GPL LICENSE SUMMARY | |
7 | * | |
553452e5 LK |
8 | * Copyright(c) 2007 - 2015 Intel Corporation. All rights reserved. |
9 | * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH | |
afb84431 | 10 | * Copyright(c) 2016 - 2017 Intel Deutschland GmbH |
c85eb619 EG |
11 | * |
12 | * This program is free software; you can redistribute it and/or modify | |
13 | * it under the terms of version 2 of the GNU General Public License as | |
14 | * published by the Free Software Foundation. | |
15 | * | |
16 | * This program is distributed in the hope that it will be useful, but | |
17 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
18 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
19 | * General Public License for more details. | |
20 | * | |
21 | * You should have received a copy of the GNU General Public License | |
22 | * along with this program; if not, write to the Free Software | |
23 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110, | |
24 | * USA | |
25 | * | |
26 | * The full GNU General Public License is included in this distribution | |
410dc5aa | 27 | * in the file called COPYING. |
c85eb619 EG |
28 | * |
29 | * Contact Information: | |
cb2f8277 | 30 | * Intel Linux Wireless <linuxwifi@intel.com> |
c85eb619 EG |
31 | * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 |
32 | * | |
33 | * BSD LICENSE | |
34 | * | |
553452e5 LK |
35 | * Copyright(c) 2005 - 2015 Intel Corporation. All rights reserved. |
36 | * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH | |
afb84431 | 37 | * Copyright(c) 2016 - 2017 Intel Deutschland GmbH |
c85eb619 EG |
38 | * All rights reserved. |
39 | * | |
40 | * Redistribution and use in source and binary forms, with or without | |
41 | * modification, are permitted provided that the following conditions | |
42 | * are met: | |
43 | * | |
44 | * * Redistributions of source code must retain the above copyright | |
45 | * notice, this list of conditions and the following disclaimer. | |
46 | * * Redistributions in binary form must reproduce the above copyright | |
47 | * notice, this list of conditions and the following disclaimer in | |
48 | * the documentation and/or other materials provided with the | |
49 | * distribution. | |
50 | * * Neither the name Intel Corporation nor the names of its | |
51 | * contributors may be used to endorse or promote products derived | |
52 | * from this software without specific prior written permission. | |
53 | * | |
54 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
55 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
56 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | |
57 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | |
58 | * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
59 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | |
60 | * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | |
61 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | |
62 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
63 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | |
64 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
65 | * | |
66 | *****************************************************************************/ | |
a42a1844 EG |
67 | #include <linux/pci.h> |
68 | #include <linux/pci-aspm.h> | |
e6bb4c9c | 69 | #include <linux/interrupt.h> |
87e5666c | 70 | #include <linux/debugfs.h> |
cf614297 | 71 | #include <linux/sched.h> |
6d8f6eeb EG |
72 | #include <linux/bitops.h> |
73 | #include <linux/gfp.h> | |
48eb7b34 | 74 | #include <linux/vmalloc.h> |
b3ff1270 | 75 | #include <linux/pm_runtime.h> |
e6bb4c9c | 76 | |
82575102 | 77 | #include "iwl-drv.h" |
c85eb619 | 78 | #include "iwl-trans.h" |
522376d2 EG |
79 | #include "iwl-csr.h" |
80 | #include "iwl-prph.h" | |
cb6bb128 | 81 | #include "iwl-scd.h" |
7a10e3e4 | 82 | #include "iwl-agn-hw.h" |
d962f9b1 | 83 | #include "fw/error-dump.h" |
6468a01a | 84 | #include "internal.h" |
06d51e0d | 85 | #include "iwl-fh.h" |
0439bb62 | 86 | |
fe45773b AN |
87 | /* extended range in FW SRAM */ |
88 | #define IWL_FW_MEM_EXTENDED_START 0x40000 | |
89 | #define IWL_FW_MEM_EXTENDED_END 0x57FFF | |
90 | ||
c2d20201 EG |
91 | static void iwl_pcie_free_fw_monitor(struct iwl_trans *trans) |
92 | { | |
93 | struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans); | |
94 | ||
95 | if (!trans_pcie->fw_mon_page) | |
96 | return; | |
97 | ||
98 | dma_unmap_page(trans->dev, trans_pcie->fw_mon_phys, | |
99 | trans_pcie->fw_mon_size, DMA_FROM_DEVICE); | |
100 | __free_pages(trans_pcie->fw_mon_page, | |
101 | get_order(trans_pcie->fw_mon_size)); | |
102 | trans_pcie->fw_mon_page = NULL; | |
103 | trans_pcie->fw_mon_phys = 0; | |
104 | trans_pcie->fw_mon_size = 0; | |
105 | } | |
106 | ||
96c285da | 107 | static void iwl_pcie_alloc_fw_monitor(struct iwl_trans *trans, u8 max_power) |
c2d20201 EG |
108 | { |
109 | struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans); | |
553452e5 | 110 | struct page *page = NULL; |
c2d20201 | 111 | dma_addr_t phys; |
96c285da | 112 | u32 size = 0; |
c2d20201 EG |
113 | u8 power; |
114 | ||
96c285da EG |
115 | if (!max_power) { |
116 | /* default max_power is maximum */ | |
117 | max_power = 26; | |
118 | } else { | |
119 | max_power += 11; | |
120 | } | |
121 | ||
122 | if (WARN(max_power > 26, | |
123 | "External buffer size for monitor is too big %d, check the FW TLV\n", | |
124 | max_power)) | |
125 | return; | |
126 | ||
c2d20201 EG |
127 | if (trans_pcie->fw_mon_page) { |
128 | dma_sync_single_for_device(trans->dev, trans_pcie->fw_mon_phys, | |
129 | trans_pcie->fw_mon_size, | |
130 | DMA_FROM_DEVICE); | |
131 | return; | |
132 | } | |
133 | ||
134 | phys = 0; | |
96c285da | 135 | for (power = max_power; power >= 11; power--) { |
c2d20201 EG |
136 | int order; |
137 | ||
138 | size = BIT(power); | |
139 | order = get_order(size); | |
140 | page = alloc_pages(__GFP_COMP | __GFP_NOWARN | __GFP_ZERO, | |
141 | order); | |
142 | if (!page) | |
143 | continue; | |
144 | ||
145 | phys = dma_map_page(trans->dev, page, 0, PAGE_SIZE << order, | |
146 | DMA_FROM_DEVICE); | |
147 | if (dma_mapping_error(trans->dev, phys)) { | |
148 | __free_pages(page, order); | |
553452e5 | 149 | page = NULL; |
c2d20201 EG |
150 | continue; |
151 | } | |
152 | IWL_INFO(trans, | |
153 | "Allocated 0x%08x bytes (order %d) for firmware monitor.\n", | |
154 | size, order); | |
155 | break; | |
156 | } | |
157 | ||
40a76905 | 158 | if (WARN_ON_ONCE(!page)) |
c2d20201 EG |
159 | return; |
160 | ||
96c285da EG |
161 | if (power != max_power) |
162 | IWL_ERR(trans, | |
163 | "Sorry - debug buffer is only %luK while you requested %luK\n", | |
164 | (unsigned long)BIT(power - 10), | |
165 | (unsigned long)BIT(max_power - 10)); | |
166 | ||
c2d20201 EG |
167 | trans_pcie->fw_mon_page = page; |
168 | trans_pcie->fw_mon_phys = phys; | |
169 | trans_pcie->fw_mon_size = size; | |
170 | } | |
171 | ||
a812cba9 AB |
172 | static u32 iwl_trans_pcie_read_shr(struct iwl_trans *trans, u32 reg) |
173 | { | |
174 | iwl_write32(trans, HEEP_CTRL_WRD_PCIEX_CTRL_REG, | |
175 | ((reg & 0x0000ffff) | (2 << 28))); | |
176 | return iwl_read32(trans, HEEP_CTRL_WRD_PCIEX_DATA_REG); | |
177 | } | |
178 | ||
179 | static void iwl_trans_pcie_write_shr(struct iwl_trans *trans, u32 reg, u32 val) | |
180 | { | |
181 | iwl_write32(trans, HEEP_CTRL_WRD_PCIEX_DATA_REG, val); | |
182 | iwl_write32(trans, HEEP_CTRL_WRD_PCIEX_CTRL_REG, | |
183 | ((reg & 0x0000ffff) | (3 << 28))); | |
184 | } | |
185 | ||
ddaf5a5b | 186 | static void iwl_pcie_set_pwr(struct iwl_trans *trans, bool vaux) |
392f8b78 | 187 | { |
66337b7c | 188 | if (trans->cfg->apmg_not_supported) |
95411d04 AA |
189 | return; |
190 | ||
ddaf5a5b JB |
191 | if (vaux && pci_pme_capable(to_pci_dev(trans->dev), PCI_D3cold)) |
192 | iwl_set_bits_mask_prph(trans, APMG_PS_CTRL_REG, | |
193 | APMG_PS_CTRL_VAL_PWR_SRC_VAUX, | |
194 | ~APMG_PS_CTRL_MSK_PWR_SRC); | |
195 | else | |
196 | iwl_set_bits_mask_prph(trans, APMG_PS_CTRL_REG, | |
197 | APMG_PS_CTRL_VAL_PWR_SRC_VMAIN, | |
198 | ~APMG_PS_CTRL_MSK_PWR_SRC); | |
392f8b78 EG |
199 | } |
200 | ||
af634bee EG |
201 | /* PCI registers */ |
202 | #define PCI_CFG_RETRY_TIMEOUT 0x041 | |
af634bee | 203 | |
eda50cde | 204 | void iwl_pcie_apm_config(struct iwl_trans *trans) |
af634bee | 205 | { |
20d3b647 | 206 | struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans); |
7afe3705 | 207 | u16 lctl; |
9180ac50 | 208 | u16 cap; |
af634bee | 209 | |
af634bee EG |
210 | /* |
211 | * HW bug W/A for instability in PCIe bus L0S->L1 transition. | |
212 | * Check if BIOS (or OS) enabled L1-ASPM on this device. | |
213 | * If so (likely), disable L0S, so device moves directly L0->L1; | |
214 | * costs negligible amount of power savings. | |
215 | * If not (unlikely), enable L0S, so there is at least some | |
216 | * power savings, even without L1. | |
217 | */ | |
7afe3705 | 218 | pcie_capability_read_word(trans_pcie->pci_dev, PCI_EXP_LNKCTL, &lctl); |
9180ac50 | 219 | if (lctl & PCI_EXP_LNKCTL_ASPM_L1) |
af634bee | 220 | iwl_set_bit(trans, CSR_GIO_REG, CSR_GIO_REG_VAL_L0S_ENABLED); |
9180ac50 | 221 | else |
af634bee | 222 | iwl_clear_bit(trans, CSR_GIO_REG, CSR_GIO_REG_VAL_L0S_ENABLED); |
438a0f0a | 223 | trans->pm_support = !(lctl & PCI_EXP_LNKCTL_ASPM_L0S); |
9180ac50 EG |
224 | |
225 | pcie_capability_read_word(trans_pcie->pci_dev, PCI_EXP_DEVCTL2, &cap); | |
226 | trans->ltr_enabled = cap & PCI_EXP_DEVCTL2_LTR_EN; | |
d74a61fc LC |
227 | IWL_DEBUG_POWER(trans, "L1 %sabled - LTR %sabled\n", |
228 | (lctl & PCI_EXP_LNKCTL_ASPM_L1) ? "En" : "Dis", | |
229 | trans->ltr_enabled ? "En" : "Dis"); | |
af634bee EG |
230 | } |
231 | ||
a6c684ee EG |
232 | /* |
233 | * Start up NIC's basic functionality after it has been reset | |
7afe3705 | 234 | * (e.g. after platform boot, or shutdown via iwl_pcie_apm_stop()) |
a6c684ee EG |
235 | * NOTE: This does not load uCode nor start the embedded processor |
236 | */ | |
7afe3705 | 237 | static int iwl_pcie_apm_init(struct iwl_trans *trans) |
a6c684ee | 238 | { |
52b6e168 EG |
239 | int ret; |
240 | ||
a6c684ee EG |
241 | IWL_DEBUG_INFO(trans, "Init card's basic functions\n"); |
242 | ||
243 | /* | |
244 | * Use "set_bit" below rather than "write", to preserve any hardware | |
245 | * bits already set by default after reset. | |
246 | */ | |
247 | ||
248 | /* Disable L0S exit timer (platform NMI Work/Around) */ | |
6e584873 | 249 | if (trans->cfg->device_family < IWL_DEVICE_FAMILY_8000) |
e4a9f8ce EH |
250 | iwl_set_bit(trans, CSR_GIO_CHICKEN_BITS, |
251 | CSR_GIO_CHICKEN_BITS_REG_BIT_DIS_L0S_EXIT_TIMER); | |
a6c684ee EG |
252 | |
253 | /* | |
254 | * Disable L0s without affecting L1; | |
255 | * don't wait for ICH L0s (ICH bug W/A) | |
256 | */ | |
257 | iwl_set_bit(trans, CSR_GIO_CHICKEN_BITS, | |
20d3b647 | 258 | CSR_GIO_CHICKEN_BITS_REG_BIT_L1A_NO_L0S_RX); |
a6c684ee EG |
259 | |
260 | /* Set FH wait threshold to maximum (HW error during stress W/A) */ | |
261 | iwl_set_bit(trans, CSR_DBG_HPET_MEM_REG, CSR_DBG_HPET_MEM_REG_VAL); | |
262 | ||
263 | /* | |
264 | * Enable HAP INTA (interrupt from management bus) to | |
265 | * wake device's PCI Express link L1a -> L0s | |
266 | */ | |
267 | iwl_set_bit(trans, CSR_HW_IF_CONFIG_REG, | |
20d3b647 | 268 | CSR_HW_IF_CONFIG_REG_BIT_HAP_WAKE_L1A); |
a6c684ee | 269 | |
7afe3705 | 270 | iwl_pcie_apm_config(trans); |
a6c684ee EG |
271 | |
272 | /* Configure analog phase-lock-loop before activating to D0A */ | |
77d76931 JB |
273 | if (trans->cfg->base_params->pll_cfg) |
274 | iwl_set_bit(trans, CSR_ANA_PLL_CFG, CSR50_ANA_PLL_CFG_VAL); | |
a6c684ee EG |
275 | |
276 | /* | |
277 | * Set "initialization complete" bit to move adapter from | |
278 | * D0U* --> D0A* (powered-up active) state. | |
279 | */ | |
280 | iwl_set_bit(trans, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_INIT_DONE); | |
281 | ||
282 | /* | |
283 | * Wait for clock stabilization; once stabilized, access to | |
284 | * device-internal resources is supported, e.g. iwl_write_prph() | |
285 | * and accesses to uCode SRAM. | |
286 | */ | |
287 | ret = iwl_poll_bit(trans, CSR_GP_CNTRL, | |
20d3b647 JB |
288 | CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY, |
289 | CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY, 25000); | |
a6c684ee | 290 | if (ret < 0) { |
52b6e168 EG |
291 | IWL_ERR(trans, "Failed to init the card\n"); |
292 | return ret; | |
a6c684ee EG |
293 | } |
294 | ||
2d93aee1 EG |
295 | if (trans->cfg->host_interrupt_operation_mode) { |
296 | /* | |
297 | * This is a bit of an abuse - This is needed for 7260 / 3160 | |
298 | * only check host_interrupt_operation_mode even if this is | |
299 | * not related to host_interrupt_operation_mode. | |
300 | * | |
301 | * Enable the oscillator to count wake up time for L1 exit. This | |
302 | * consumes slightly more power (100uA) - but allows to be sure | |
303 | * that we wake up from L1 on time. | |
304 | * | |
305 | * This looks weird: read twice the same register, discard the | |
306 | * value, set a bit, and yet again, read that same register | |
307 | * just to discard the value. But that's the way the hardware | |
308 | * seems to like it. | |
309 | */ | |
310 | iwl_read_prph(trans, OSC_CLK); | |
311 | iwl_read_prph(trans, OSC_CLK); | |
312 | iwl_set_bits_prph(trans, OSC_CLK, OSC_CLK_FORCE_CONTROL); | |
313 | iwl_read_prph(trans, OSC_CLK); | |
314 | iwl_read_prph(trans, OSC_CLK); | |
315 | } | |
316 | ||
a6c684ee EG |
317 | /* |
318 | * Enable DMA clock and wait for it to stabilize. | |
319 | * | |
3073d8c0 EH |
320 | * Write to "CLK_EN_REG"; "1" bits enable clocks, while "0" |
321 | * bits do not disable clocks. This preserves any hardware | |
322 | * bits already set by default in "CLK_CTRL_REG" after reset. | |
a6c684ee | 323 | */ |
95411d04 | 324 | if (!trans->cfg->apmg_not_supported) { |
3073d8c0 EH |
325 | iwl_write_prph(trans, APMG_CLK_EN_REG, |
326 | APMG_CLK_VAL_DMA_CLK_RQT); | |
327 | udelay(20); | |
328 | ||
329 | /* Disable L1-Active */ | |
330 | iwl_set_bits_prph(trans, APMG_PCIDEV_STT_REG, | |
331 | APMG_PCIDEV_STT_VAL_L1_ACT_DIS); | |
332 | ||
333 | /* Clear the interrupt in APMG if the NIC is in RFKILL */ | |
334 | iwl_write_prph(trans, APMG_RTC_INT_STT_REG, | |
335 | APMG_RTC_INT_STT_RFKILL); | |
336 | } | |
889b1696 | 337 | |
eb7ff77e | 338 | set_bit(STATUS_DEVICE_ENABLED, &trans->status); |
a6c684ee | 339 | |
52b6e168 | 340 | return 0; |
a6c684ee EG |
341 | } |
342 | ||
a812cba9 AB |
343 | /* |
344 | * Enable LP XTAL to avoid HW bug where device may consume much power if | |
345 | * FW is not loaded after device reset. LP XTAL is disabled by default | |
346 | * after device HW reset. Do it only if XTAL is fed by internal source. | |
347 | * Configure device's "persistence" mode to avoid resetting XTAL again when | |
348 | * SHRD_HW_RST occurs in S3. | |
349 | */ | |
350 | static void iwl_pcie_apm_lp_xtal_enable(struct iwl_trans *trans) | |
351 | { | |
352 | int ret; | |
353 | u32 apmg_gp1_reg; | |
354 | u32 apmg_xtal_cfg_reg; | |
355 | u32 dl_cfg_reg; | |
356 | ||
357 | /* Force XTAL ON */ | |
358 | __iwl_trans_pcie_set_bit(trans, CSR_GP_CNTRL, | |
359 | CSR_GP_CNTRL_REG_FLAG_XTAL_ON); | |
360 | ||
099a628b | 361 | iwl_pcie_sw_reset(trans); |
a812cba9 AB |
362 | |
363 | /* | |
364 | * Set "initialization complete" bit to move adapter from | |
365 | * D0U* --> D0A* (powered-up active) state. | |
366 | */ | |
367 | iwl_set_bit(trans, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_INIT_DONE); | |
368 | ||
369 | /* | |
370 | * Wait for clock stabilization; once stabilized, access to | |
371 | * device-internal resources is possible. | |
372 | */ | |
373 | ret = iwl_poll_bit(trans, CSR_GP_CNTRL, | |
374 | CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY, | |
375 | CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY, | |
376 | 25000); | |
377 | if (WARN_ON(ret < 0)) { | |
378 | IWL_ERR(trans, "Access time out - failed to enable LP XTAL\n"); | |
379 | /* Release XTAL ON request */ | |
380 | __iwl_trans_pcie_clear_bit(trans, CSR_GP_CNTRL, | |
381 | CSR_GP_CNTRL_REG_FLAG_XTAL_ON); | |
382 | return; | |
383 | } | |
384 | ||
385 | /* | |
386 | * Clear "disable persistence" to avoid LP XTAL resetting when | |
387 | * SHRD_HW_RST is applied in S3. | |
388 | */ | |
389 | iwl_clear_bits_prph(trans, APMG_PCIDEV_STT_REG, | |
390 | APMG_PCIDEV_STT_VAL_PERSIST_DIS); | |
391 | ||
392 | /* | |
393 | * Force APMG XTAL to be active to prevent its disabling by HW | |
394 | * caused by APMG idle state. | |
395 | */ | |
396 | apmg_xtal_cfg_reg = iwl_trans_pcie_read_shr(trans, | |
397 | SHR_APMG_XTAL_CFG_REG); | |
398 | iwl_trans_pcie_write_shr(trans, SHR_APMG_XTAL_CFG_REG, | |
399 | apmg_xtal_cfg_reg | | |
400 | SHR_APMG_XTAL_CFG_XTAL_ON_REQ); | |
401 | ||
099a628b | 402 | iwl_pcie_sw_reset(trans); |
a812cba9 AB |
403 | |
404 | /* Enable LP XTAL by indirect access through CSR */ | |
405 | apmg_gp1_reg = iwl_trans_pcie_read_shr(trans, SHR_APMG_GP1_REG); | |
406 | iwl_trans_pcie_write_shr(trans, SHR_APMG_GP1_REG, apmg_gp1_reg | | |
407 | SHR_APMG_GP1_WF_XTAL_LP_EN | | |
408 | SHR_APMG_GP1_CHICKEN_BIT_SELECT); | |
409 | ||
410 | /* Clear delay line clock power up */ | |
411 | dl_cfg_reg = iwl_trans_pcie_read_shr(trans, SHR_APMG_DL_CFG_REG); | |
412 | iwl_trans_pcie_write_shr(trans, SHR_APMG_DL_CFG_REG, dl_cfg_reg & | |
413 | ~SHR_APMG_DL_CFG_DL_CLOCK_POWER_UP); | |
414 | ||
415 | /* | |
416 | * Enable persistence mode to avoid LP XTAL resetting when | |
417 | * SHRD_HW_RST is applied in S3. | |
418 | */ | |
419 | iwl_set_bit(trans, CSR_HW_IF_CONFIG_REG, | |
420 | CSR_HW_IF_CONFIG_REG_PERSIST_MODE); | |
421 | ||
422 | /* | |
423 | * Clear "initialization complete" bit to move adapter from | |
424 | * D0A* (powered-up Active) --> D0U* (Uninitialized) state. | |
425 | */ | |
426 | iwl_clear_bit(trans, CSR_GP_CNTRL, | |
427 | CSR_GP_CNTRL_REG_FLAG_INIT_DONE); | |
428 | ||
429 | /* Activates XTAL resources monitor */ | |
430 | __iwl_trans_pcie_set_bit(trans, CSR_MONITOR_CFG_REG, | |
431 | CSR_MONITOR_XTAL_RESOURCES); | |
432 | ||
433 | /* Release XTAL ON request */ | |
434 | __iwl_trans_pcie_clear_bit(trans, CSR_GP_CNTRL, | |
435 | CSR_GP_CNTRL_REG_FLAG_XTAL_ON); | |
436 | udelay(10); | |
437 | ||
438 | /* Release APMG XTAL */ | |
439 | iwl_trans_pcie_write_shr(trans, SHR_APMG_XTAL_CFG_REG, | |
440 | apmg_xtal_cfg_reg & | |
441 | ~SHR_APMG_XTAL_CFG_XTAL_ON_REQ); | |
442 | } | |
443 | ||
e8c8935e | 444 | void iwl_pcie_apm_stop_master(struct iwl_trans *trans) |
cc56feb2 | 445 | { |
e8c8935e | 446 | int ret; |
cc56feb2 EG |
447 | |
448 | /* stop device's busmaster DMA activity */ | |
449 | iwl_set_bit(trans, CSR_RESET, CSR_RESET_REG_FLAG_STOP_MASTER); | |
450 | ||
451 | ret = iwl_poll_bit(trans, CSR_RESET, | |
20d3b647 JB |
452 | CSR_RESET_REG_FLAG_MASTER_DISABLED, |
453 | CSR_RESET_REG_FLAG_MASTER_DISABLED, 100); | |
7f2ac8fb | 454 | if (ret < 0) |
cc56feb2 EG |
455 | IWL_WARN(trans, "Master Disable Timed Out, 100 usec\n"); |
456 | ||
457 | IWL_DEBUG_INFO(trans, "stop master\n"); | |
cc56feb2 EG |
458 | } |
459 | ||
b7aaeae4 | 460 | static void iwl_pcie_apm_stop(struct iwl_trans *trans, bool op_mode_leave) |
cc56feb2 EG |
461 | { |
462 | IWL_DEBUG_INFO(trans, "Stop card, put in low power state\n"); | |
463 | ||
b7aaeae4 EG |
464 | if (op_mode_leave) { |
465 | if (!test_bit(STATUS_DEVICE_ENABLED, &trans->status)) | |
466 | iwl_pcie_apm_init(trans); | |
467 | ||
468 | /* inform ME that we are leaving */ | |
469 | if (trans->cfg->device_family == IWL_DEVICE_FAMILY_7000) | |
470 | iwl_set_bits_prph(trans, APMG_PCIDEV_STT_REG, | |
471 | APMG_PCIDEV_STT_VAL_WAKE_ME); | |
6e584873 | 472 | else if (trans->cfg->device_family >= IWL_DEVICE_FAMILY_8000) { |
c9fdec9f EG |
473 | iwl_set_bit(trans, CSR_DBG_LINK_PWR_MGMT_REG, |
474 | CSR_RESET_LINK_PWR_MGMT_DISABLED); | |
b7aaeae4 EG |
475 | iwl_set_bit(trans, CSR_HW_IF_CONFIG_REG, |
476 | CSR_HW_IF_CONFIG_REG_PREPARE | | |
477 | CSR_HW_IF_CONFIG_REG_ENABLE_PME); | |
c9fdec9f EG |
478 | mdelay(1); |
479 | iwl_clear_bit(trans, CSR_DBG_LINK_PWR_MGMT_REG, | |
480 | CSR_RESET_LINK_PWR_MGMT_DISABLED); | |
481 | } | |
b7aaeae4 EG |
482 | mdelay(5); |
483 | } | |
484 | ||
eb7ff77e | 485 | clear_bit(STATUS_DEVICE_ENABLED, &trans->status); |
cc56feb2 EG |
486 | |
487 | /* Stop device's DMA activity */ | |
7afe3705 | 488 | iwl_pcie_apm_stop_master(trans); |
cc56feb2 | 489 | |
a812cba9 AB |
490 | if (trans->cfg->lp_xtal_workaround) { |
491 | iwl_pcie_apm_lp_xtal_enable(trans); | |
492 | return; | |
493 | } | |
494 | ||
099a628b | 495 | iwl_pcie_sw_reset(trans); |
cc56feb2 EG |
496 | |
497 | /* | |
498 | * Clear "initialization complete" bit to move adapter from | |
499 | * D0A* (powered-up Active) --> D0U* (Uninitialized) state. | |
500 | */ | |
501 | iwl_clear_bit(trans, CSR_GP_CNTRL, | |
502 | CSR_GP_CNTRL_REG_FLAG_INIT_DONE); | |
503 | } | |
504 | ||
7afe3705 | 505 | static int iwl_pcie_nic_init(struct iwl_trans *trans) |
392f8b78 | 506 | { |
7b11488f | 507 | struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans); |
52b6e168 | 508 | int ret; |
392f8b78 EG |
509 | |
510 | /* nic_init */ | |
7b70bd63 | 511 | spin_lock(&trans_pcie->irq_lock); |
52b6e168 | 512 | ret = iwl_pcie_apm_init(trans); |
7b70bd63 | 513 | spin_unlock(&trans_pcie->irq_lock); |
392f8b78 | 514 | |
52b6e168 EG |
515 | if (ret) |
516 | return ret; | |
517 | ||
95411d04 | 518 | iwl_pcie_set_pwr(trans, false); |
392f8b78 | 519 | |
ecdb975c | 520 | iwl_op_mode_nic_config(trans->op_mode); |
392f8b78 EG |
521 | |
522 | /* Allocate the RX queue, or reset if it is already allocated */ | |
9805c446 | 523 | iwl_pcie_rx_init(trans); |
392f8b78 EG |
524 | |
525 | /* Allocate or reset and init all Tx and Command queues */ | |
f02831be | 526 | if (iwl_pcie_tx_init(trans)) |
392f8b78 EG |
527 | return -ENOMEM; |
528 | ||
035f7ff2 | 529 | if (trans->cfg->base_params->shadow_reg_enable) { |
392f8b78 | 530 | /* enable shadow regs in HW */ |
20d3b647 | 531 | iwl_set_bit(trans, CSR_MAC_SHADOW_REG_CTRL, 0x800FFFFF); |
d38069d1 | 532 | IWL_DEBUG_INFO(trans, "Enabling shadow registers in device\n"); |
392f8b78 EG |
533 | } |
534 | ||
392f8b78 EG |
535 | return 0; |
536 | } | |
537 | ||
538 | #define HW_READY_TIMEOUT (50) | |
539 | ||
540 | /* Note: returns poll_bit return value, which is >= 0 if success */ | |
7afe3705 | 541 | static int iwl_pcie_set_hw_ready(struct iwl_trans *trans) |
392f8b78 EG |
542 | { |
543 | int ret; | |
544 | ||
1042db2a | 545 | iwl_set_bit(trans, CSR_HW_IF_CONFIG_REG, |
20d3b647 | 546 | CSR_HW_IF_CONFIG_REG_BIT_NIC_READY); |
392f8b78 EG |
547 | |
548 | /* See if we got it */ | |
1042db2a | 549 | ret = iwl_poll_bit(trans, CSR_HW_IF_CONFIG_REG, |
20d3b647 JB |
550 | CSR_HW_IF_CONFIG_REG_BIT_NIC_READY, |
551 | CSR_HW_IF_CONFIG_REG_BIT_NIC_READY, | |
552 | HW_READY_TIMEOUT); | |
392f8b78 | 553 | |
6a08f514 EG |
554 | if (ret >= 0) |
555 | iwl_set_bit(trans, CSR_MBOX_SET_REG, CSR_MBOX_SET_REG_OS_ALIVE); | |
556 | ||
6d8f6eeb | 557 | IWL_DEBUG_INFO(trans, "hardware%s ready\n", ret < 0 ? " not" : ""); |
392f8b78 EG |
558 | return ret; |
559 | } | |
560 | ||
561 | /* Note: returns standard 0/-ERROR code */ | |
eda50cde | 562 | int iwl_pcie_prepare_card_hw(struct iwl_trans *trans) |
392f8b78 EG |
563 | { |
564 | int ret; | |
289e5501 | 565 | int t = 0; |
501fd989 | 566 | int iter; |
392f8b78 | 567 | |
6d8f6eeb | 568 | IWL_DEBUG_INFO(trans, "iwl_trans_prepare_card_hw enter\n"); |
392f8b78 | 569 | |
7afe3705 | 570 | ret = iwl_pcie_set_hw_ready(trans); |
ebb7678d | 571 | /* If the card is ready, exit 0 */ |
392f8b78 EG |
572 | if (ret >= 0) |
573 | return 0; | |
574 | ||
c9fdec9f EG |
575 | iwl_set_bit(trans, CSR_DBG_LINK_PWR_MGMT_REG, |
576 | CSR_RESET_LINK_PWR_MGMT_DISABLED); | |
192185d6 | 577 | usleep_range(1000, 2000); |
c9fdec9f | 578 | |
501fd989 EG |
579 | for (iter = 0; iter < 10; iter++) { |
580 | /* If HW is not ready, prepare the conditions to check again */ | |
581 | iwl_set_bit(trans, CSR_HW_IF_CONFIG_REG, | |
582 | CSR_HW_IF_CONFIG_REG_PREPARE); | |
583 | ||
584 | do { | |
585 | ret = iwl_pcie_set_hw_ready(trans); | |
03a19cbb EG |
586 | if (ret >= 0) |
587 | return 0; | |
392f8b78 | 588 | |
501fd989 EG |
589 | usleep_range(200, 1000); |
590 | t += 200; | |
591 | } while (t < 150000); | |
592 | msleep(25); | |
593 | } | |
392f8b78 | 594 | |
7f2ac8fb | 595 | IWL_ERR(trans, "Couldn't prepare the card\n"); |
392f8b78 | 596 | |
392f8b78 EG |
597 | return ret; |
598 | } | |
599 | ||
cf614297 EG |
600 | /* |
601 | * ucode | |
602 | */ | |
564cdce7 SS |
603 | static void iwl_pcie_load_firmware_chunk_fh(struct iwl_trans *trans, |
604 | u32 dst_addr, dma_addr_t phy_addr, | |
605 | u32 byte_cnt) | |
cf614297 | 606 | { |
bac842da EG |
607 | iwl_write32(trans, FH_TCSR_CHNL_TX_CONFIG_REG(FH_SRVC_CHNL), |
608 | FH_TCSR_TX_CONFIG_REG_VAL_DMA_CHNL_PAUSE); | |
609 | ||
610 | iwl_write32(trans, FH_SRVC_CHNL_SRAM_ADDR_REG(FH_SRVC_CHNL), | |
611 | dst_addr); | |
612 | ||
613 | iwl_write32(trans, FH_TFDIB_CTRL0_REG(FH_SRVC_CHNL), | |
614 | phy_addr & FH_MEM_TFDIB_DRAM_ADDR_LSB_MSK); | |
615 | ||
616 | iwl_write32(trans, FH_TFDIB_CTRL1_REG(FH_SRVC_CHNL), | |
617 | (iwl_get_dma_hi_addr(phy_addr) | |
618 | << FH_MEM_TFDIB_REG1_ADDR_BITSHIFT) | byte_cnt); | |
619 | ||
620 | iwl_write32(trans, FH_TCSR_CHNL_TX_BUF_STS_REG(FH_SRVC_CHNL), | |
621 | BIT(FH_TCSR_CHNL_TX_BUF_STS_REG_POS_TB_NUM) | | |
622 | BIT(FH_TCSR_CHNL_TX_BUF_STS_REG_POS_TB_IDX) | | |
623 | FH_TCSR_CHNL_TX_BUF_STS_REG_VAL_TFDB_VALID); | |
624 | ||
625 | iwl_write32(trans, FH_TCSR_CHNL_TX_CONFIG_REG(FH_SRVC_CHNL), | |
626 | FH_TCSR_TX_CONFIG_REG_VAL_DMA_CHNL_ENABLE | | |
627 | FH_TCSR_TX_CONFIG_REG_VAL_DMA_CREDIT_DISABLE | | |
628 | FH_TCSR_TX_CONFIG_REG_VAL_CIRQ_HOST_ENDTFD); | |
564cdce7 SS |
629 | } |
630 | ||
564cdce7 SS |
631 | static int iwl_pcie_load_firmware_chunk(struct iwl_trans *trans, |
632 | u32 dst_addr, dma_addr_t phy_addr, | |
633 | u32 byte_cnt) | |
634 | { | |
635 | struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans); | |
636 | unsigned long flags; | |
637 | int ret; | |
638 | ||
639 | trans_pcie->ucode_write_complete = false; | |
640 | ||
641 | if (!iwl_trans_grab_nic_access(trans, &flags)) | |
642 | return -EIO; | |
643 | ||
eda50cde SS |
644 | iwl_pcie_load_firmware_chunk_fh(trans, dst_addr, phy_addr, |
645 | byte_cnt); | |
bac842da | 646 | iwl_trans_release_nic_access(trans, &flags); |
cf614297 | 647 | |
13df1aab JB |
648 | ret = wait_event_timeout(trans_pcie->ucode_write_waitq, |
649 | trans_pcie->ucode_write_complete, 5 * HZ); | |
cf614297 | 650 | if (!ret) { |
83f84d7b | 651 | IWL_ERR(trans, "Failed to load firmware chunk!\n"); |
cf614297 EG |
652 | return -ETIMEDOUT; |
653 | } | |
654 | ||
655 | return 0; | |
656 | } | |
657 | ||
7afe3705 | 658 | static int iwl_pcie_load_section(struct iwl_trans *trans, u8 section_num, |
83f84d7b | 659 | const struct fw_desc *section) |
cf614297 | 660 | { |
83f84d7b JB |
661 | u8 *v_addr; |
662 | dma_addr_t p_addr; | |
baa21e83 | 663 | u32 offset, chunk_sz = min_t(u32, FH_MEM_TB_MAX_LENGTH, section->len); |
cf614297 EG |
664 | int ret = 0; |
665 | ||
83f84d7b JB |
666 | IWL_DEBUG_FW(trans, "[%d] uCode section being loaded...\n", |
667 | section_num); | |
668 | ||
c571573a EG |
669 | v_addr = dma_alloc_coherent(trans->dev, chunk_sz, &p_addr, |
670 | GFP_KERNEL | __GFP_NOWARN); | |
671 | if (!v_addr) { | |
672 | IWL_DEBUG_INFO(trans, "Falling back to small chunks of DMA\n"); | |
673 | chunk_sz = PAGE_SIZE; | |
674 | v_addr = dma_alloc_coherent(trans->dev, chunk_sz, | |
675 | &p_addr, GFP_KERNEL); | |
676 | if (!v_addr) | |
677 | return -ENOMEM; | |
678 | } | |
83f84d7b | 679 | |
c571573a | 680 | for (offset = 0; offset < section->len; offset += chunk_sz) { |
fe45773b AN |
681 | u32 copy_size, dst_addr; |
682 | bool extended_addr = false; | |
83f84d7b | 683 | |
c571573a | 684 | copy_size = min_t(u32, chunk_sz, section->len - offset); |
fe45773b AN |
685 | dst_addr = section->offset + offset; |
686 | ||
687 | if (dst_addr >= IWL_FW_MEM_EXTENDED_START && | |
688 | dst_addr <= IWL_FW_MEM_EXTENDED_END) | |
689 | extended_addr = true; | |
690 | ||
691 | if (extended_addr) | |
692 | iwl_set_bits_prph(trans, LMPM_CHICK, | |
693 | LMPM_CHICK_EXTENDED_ADDR_SPACE); | |
cf614297 | 694 | |
83f84d7b | 695 | memcpy(v_addr, (u8 *)section->data + offset, copy_size); |
fe45773b AN |
696 | ret = iwl_pcie_load_firmware_chunk(trans, dst_addr, p_addr, |
697 | copy_size); | |
698 | ||
699 | if (extended_addr) | |
700 | iwl_clear_bits_prph(trans, LMPM_CHICK, | |
701 | LMPM_CHICK_EXTENDED_ADDR_SPACE); | |
702 | ||
83f84d7b JB |
703 | if (ret) { |
704 | IWL_ERR(trans, | |
705 | "Could not load the [%d] uCode section\n", | |
706 | section_num); | |
707 | break; | |
6dfa8d01 | 708 | } |
83f84d7b JB |
709 | } |
710 | ||
c571573a | 711 | dma_free_coherent(trans->dev, chunk_sz, v_addr, p_addr); |
83f84d7b JB |
712 | return ret; |
713 | } | |
714 | ||
5dd9c68a EG |
715 | static int iwl_pcie_load_cpu_sections_8000(struct iwl_trans *trans, |
716 | const struct fw_img *image, | |
717 | int cpu, | |
718 | int *first_ucode_section) | |
e2d6f4e7 EH |
719 | { |
720 | int shift_param; | |
dcab8ecd EH |
721 | int i, ret = 0, sec_num = 0x1; |
722 | u32 val, last_read_idx = 0; | |
e2d6f4e7 EH |
723 | |
724 | if (cpu == 1) { | |
725 | shift_param = 0; | |
034846cf | 726 | *first_ucode_section = 0; |
e2d6f4e7 EH |
727 | } else { |
728 | shift_param = 16; | |
034846cf | 729 | (*first_ucode_section)++; |
e2d6f4e7 EH |
730 | } |
731 | ||
eef187a7 | 732 | for (i = *first_ucode_section; i < image->num_sec; i++) { |
034846cf EH |
733 | last_read_idx = i; |
734 | ||
a6c4fb44 MG |
735 | /* |
736 | * CPU1_CPU2_SEPARATOR_SECTION delimiter - separate between | |
737 | * CPU1 to CPU2. | |
738 | * PAGING_SEPARATOR_SECTION delimiter - separate between | |
739 | * CPU2 non paged to CPU2 paging sec. | |
740 | */ | |
034846cf | 741 | if (!image->sec[i].data || |
a6c4fb44 MG |
742 | image->sec[i].offset == CPU1_CPU2_SEPARATOR_SECTION || |
743 | image->sec[i].offset == PAGING_SEPARATOR_SECTION) { | |
034846cf EH |
744 | IWL_DEBUG_FW(trans, |
745 | "Break since Data not valid or Empty section, sec = %d\n", | |
746 | i); | |
189fa2fa | 747 | break; |
034846cf EH |
748 | } |
749 | ||
189fa2fa EH |
750 | ret = iwl_pcie_load_section(trans, i, &image->sec[i]); |
751 | if (ret) | |
752 | return ret; | |
dcab8ecd | 753 | |
d6a2c5c7 | 754 | /* Notify ucode of loaded section number and status */ |
eda50cde SS |
755 | val = iwl_read_direct32(trans, FH_UCODE_LOAD_STATUS); |
756 | val = val | (sec_num << shift_param); | |
757 | iwl_write_direct32(trans, FH_UCODE_LOAD_STATUS, val); | |
758 | ||
dcab8ecd | 759 | sec_num = (sec_num << 1) | 0x1; |
e2d6f4e7 EH |
760 | } |
761 | ||
034846cf EH |
762 | *first_ucode_section = last_read_idx; |
763 | ||
2aabdbdc EG |
764 | iwl_enable_interrupts(trans); |
765 | ||
d6a2c5c7 SS |
766 | if (trans->cfg->use_tfh) { |
767 | if (cpu == 1) | |
768 | iwl_write_prph(trans, UREG_UCODE_LOAD_STATUS, | |
769 | 0xFFFF); | |
770 | else | |
771 | iwl_write_prph(trans, UREG_UCODE_LOAD_STATUS, | |
772 | 0xFFFFFFFF); | |
773 | } else { | |
774 | if (cpu == 1) | |
775 | iwl_write_direct32(trans, FH_UCODE_LOAD_STATUS, | |
776 | 0xFFFF); | |
777 | else | |
778 | iwl_write_direct32(trans, FH_UCODE_LOAD_STATUS, | |
779 | 0xFFFFFFFF); | |
780 | } | |
afb88917 | 781 | |
189fa2fa EH |
782 | return 0; |
783 | } | |
e2d6f4e7 | 784 | |
189fa2fa EH |
785 | static int iwl_pcie_load_cpu_sections(struct iwl_trans *trans, |
786 | const struct fw_img *image, | |
034846cf EH |
787 | int cpu, |
788 | int *first_ucode_section) | |
189fa2fa | 789 | { |
189fa2fa | 790 | int i, ret = 0; |
034846cf | 791 | u32 last_read_idx = 0; |
189fa2fa | 792 | |
3ce4a038 | 793 | if (cpu == 1) |
034846cf | 794 | *first_ucode_section = 0; |
3ce4a038 | 795 | else |
034846cf | 796 | (*first_ucode_section)++; |
189fa2fa | 797 | |
eef187a7 | 798 | for (i = *first_ucode_section; i < image->num_sec; i++) { |
034846cf EH |
799 | last_read_idx = i; |
800 | ||
a6c4fb44 MG |
801 | /* |
802 | * CPU1_CPU2_SEPARATOR_SECTION delimiter - separate between | |
803 | * CPU1 to CPU2. | |
804 | * PAGING_SEPARATOR_SECTION delimiter - separate between | |
805 | * CPU2 non paged to CPU2 paging sec. | |
806 | */ | |
034846cf | 807 | if (!image->sec[i].data || |
a6c4fb44 MG |
808 | image->sec[i].offset == CPU1_CPU2_SEPARATOR_SECTION || |
809 | image->sec[i].offset == PAGING_SEPARATOR_SECTION) { | |
034846cf EH |
810 | IWL_DEBUG_FW(trans, |
811 | "Break since Data not valid or Empty section, sec = %d\n", | |
812 | i); | |
189fa2fa | 813 | break; |
034846cf EH |
814 | } |
815 | ||
189fa2fa EH |
816 | ret = iwl_pcie_load_section(trans, i, &image->sec[i]); |
817 | if (ret) | |
818 | return ret; | |
e2d6f4e7 EH |
819 | } |
820 | ||
034846cf EH |
821 | *first_ucode_section = last_read_idx; |
822 | ||
e2d6f4e7 EH |
823 | return 0; |
824 | } | |
825 | ||
c9be849d | 826 | void iwl_pcie_apply_destination(struct iwl_trans *trans) |
09e350f7 LK |
827 | { |
828 | struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans); | |
829 | const struct iwl_fw_dbg_dest_tlv *dest = trans->dbg_dest_tlv; | |
830 | int i; | |
831 | ||
832 | if (dest->version) | |
833 | IWL_ERR(trans, | |
834 | "DBG DEST version is %d - expect issues\n", | |
835 | dest->version); | |
836 | ||
837 | IWL_INFO(trans, "Applying debug destination %s\n", | |
838 | get_fw_dbg_mode_string(dest->monitor_mode)); | |
839 | ||
840 | if (dest->monitor_mode == EXTERNAL_MODE) | |
96c285da | 841 | iwl_pcie_alloc_fw_monitor(trans, dest->size_power); |
09e350f7 LK |
842 | else |
843 | IWL_WARN(trans, "PCI should have external buffer debug\n"); | |
844 | ||
845 | for (i = 0; i < trans->dbg_dest_reg_num; i++) { | |
846 | u32 addr = le32_to_cpu(dest->reg_ops[i].addr); | |
847 | u32 val = le32_to_cpu(dest->reg_ops[i].val); | |
848 | ||
849 | switch (dest->reg_ops[i].op) { | |
850 | case CSR_ASSIGN: | |
851 | iwl_write32(trans, addr, val); | |
852 | break; | |
853 | case CSR_SETBIT: | |
854 | iwl_set_bit(trans, addr, BIT(val)); | |
855 | break; | |
856 | case CSR_CLEARBIT: | |
857 | iwl_clear_bit(trans, addr, BIT(val)); | |
858 | break; | |
859 | case PRPH_ASSIGN: | |
860 | iwl_write_prph(trans, addr, val); | |
861 | break; | |
862 | case PRPH_SETBIT: | |
863 | iwl_set_bits_prph(trans, addr, BIT(val)); | |
864 | break; | |
865 | case PRPH_CLEARBIT: | |
866 | iwl_clear_bits_prph(trans, addr, BIT(val)); | |
867 | break; | |
869f3b15 HD |
868 | case PRPH_BLOCKBIT: |
869 | if (iwl_read_prph(trans, addr) & BIT(val)) { | |
870 | IWL_ERR(trans, | |
871 | "BIT(%u) in address 0x%x is 1, stopping FW configuration\n", | |
872 | val, addr); | |
873 | goto monitor; | |
874 | } | |
875 | break; | |
09e350f7 LK |
876 | default: |
877 | IWL_ERR(trans, "FW debug - unknown OP %d\n", | |
878 | dest->reg_ops[i].op); | |
879 | break; | |
880 | } | |
881 | } | |
882 | ||
869f3b15 | 883 | monitor: |
09e350f7 LK |
884 | if (dest->monitor_mode == EXTERNAL_MODE && trans_pcie->fw_mon_size) { |
885 | iwl_write_prph(trans, le32_to_cpu(dest->base_reg), | |
886 | trans_pcie->fw_mon_phys >> dest->base_shift); | |
6e584873 | 887 | if (trans->cfg->device_family >= IWL_DEVICE_FAMILY_8000) |
62d7476d EG |
888 | iwl_write_prph(trans, le32_to_cpu(dest->end_reg), |
889 | (trans_pcie->fw_mon_phys + | |
890 | trans_pcie->fw_mon_size - 256) >> | |
891 | dest->end_shift); | |
892 | else | |
893 | iwl_write_prph(trans, le32_to_cpu(dest->end_reg), | |
894 | (trans_pcie->fw_mon_phys + | |
895 | trans_pcie->fw_mon_size) >> | |
896 | dest->end_shift); | |
09e350f7 LK |
897 | } |
898 | } | |
899 | ||
7afe3705 | 900 | static int iwl_pcie_load_given_ucode(struct iwl_trans *trans, |
0692fe41 | 901 | const struct fw_img *image) |
cf614297 | 902 | { |
c2d20201 | 903 | struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans); |
189fa2fa | 904 | int ret = 0; |
034846cf | 905 | int first_ucode_section; |
cf614297 | 906 | |
dcab8ecd | 907 | IWL_DEBUG_FW(trans, "working with %s CPU\n", |
e2d6f4e7 EH |
908 | image->is_dual_cpus ? "Dual" : "Single"); |
909 | ||
dcab8ecd EH |
910 | /* load to FW the binary non secured sections of CPU1 */ |
911 | ret = iwl_pcie_load_cpu_sections(trans, image, 1, &first_ucode_section); | |
912 | if (ret) | |
913 | return ret; | |
e2d6f4e7 EH |
914 | |
915 | if (image->is_dual_cpus) { | |
189fa2fa EH |
916 | /* set CPU2 header address */ |
917 | iwl_write_prph(trans, | |
918 | LMPM_SECURE_UCODE_LOAD_CPU2_HDR_ADDR, | |
919 | LMPM_SECURE_CPU2_HDR_MEM_SPACE); | |
e2d6f4e7 | 920 | |
189fa2fa | 921 | /* load to FW the binary sections of CPU2 */ |
dcab8ecd EH |
922 | ret = iwl_pcie_load_cpu_sections(trans, image, 2, |
923 | &first_ucode_section); | |
189fa2fa EH |
924 | if (ret) |
925 | return ret; | |
e2d6f4e7 | 926 | } |
cf614297 | 927 | |
c2d20201 EG |
928 | /* supported for 7000 only for the moment */ |
929 | if (iwlwifi_mod_params.fw_monitor && | |
930 | trans->cfg->device_family == IWL_DEVICE_FAMILY_7000) { | |
96c285da | 931 | iwl_pcie_alloc_fw_monitor(trans, 0); |
c2d20201 EG |
932 | |
933 | if (trans_pcie->fw_mon_size) { | |
934 | iwl_write_prph(trans, MON_BUFF_BASE_ADDR, | |
935 | trans_pcie->fw_mon_phys >> 4); | |
936 | iwl_write_prph(trans, MON_BUFF_END_ADDR, | |
937 | (trans_pcie->fw_mon_phys + | |
938 | trans_pcie->fw_mon_size) >> 4); | |
939 | } | |
09e350f7 LK |
940 | } else if (trans->dbg_dest_tlv) { |
941 | iwl_pcie_apply_destination(trans); | |
c2d20201 EG |
942 | } |
943 | ||
2aabdbdc EG |
944 | iwl_enable_interrupts(trans); |
945 | ||
e12ba844 | 946 | /* release CPU reset */ |
5dd9c68a | 947 | iwl_write32(trans, CSR_RESET, 0); |
e12ba844 | 948 | |
dcab8ecd EH |
949 | return 0; |
950 | } | |
189fa2fa | 951 | |
5dd9c68a EG |
952 | static int iwl_pcie_load_given_ucode_8000(struct iwl_trans *trans, |
953 | const struct fw_img *image) | |
dcab8ecd EH |
954 | { |
955 | int ret = 0; | |
956 | int first_ucode_section; | |
dcab8ecd EH |
957 | |
958 | IWL_DEBUG_FW(trans, "working with %s CPU\n", | |
959 | image->is_dual_cpus ? "Dual" : "Single"); | |
960 | ||
a2227ce2 EG |
961 | if (trans->dbg_dest_tlv) |
962 | iwl_pcie_apply_destination(trans); | |
963 | ||
82ea7966 SS |
964 | IWL_DEBUG_POWER(trans, "Original WFPM value = 0x%08X\n", |
965 | iwl_read_prph(trans, WFPM_GP2)); | |
966 | ||
967 | /* | |
968 | * Set default value. On resume reading the values that were | |
969 | * zeored can provide debug data on the resume flow. | |
970 | * This is for debugging only and has no functional impact. | |
971 | */ | |
972 | iwl_write_prph(trans, WFPM_GP2, 0x01010101); | |
973 | ||
dcab8ecd EH |
974 | /* configure the ucode to be ready to get the secured image */ |
975 | /* release CPU reset */ | |
976 | iwl_write_prph(trans, RELEASE_CPU_RESET, RELEASE_CPU_RESET_BIT); | |
977 | ||
978 | /* load to FW the binary Secured sections of CPU1 */ | |
5dd9c68a EG |
979 | ret = iwl_pcie_load_cpu_sections_8000(trans, image, 1, |
980 | &first_ucode_section); | |
dcab8ecd EH |
981 | if (ret) |
982 | return ret; | |
983 | ||
984 | /* load to FW the binary sections of CPU2 */ | |
47dbab26 EG |
985 | return iwl_pcie_load_cpu_sections_8000(trans, image, 2, |
986 | &first_ucode_section); | |
cf614297 EG |
987 | } |
988 | ||
eda50cde | 989 | bool iwl_trans_check_hw_rf_kill(struct iwl_trans *trans) |
727c02df | 990 | { |
326477e4 | 991 | struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans); |
727c02df | 992 | bool hw_rfkill = iwl_is_rfkill_set(trans); |
326477e4 JB |
993 | bool prev = test_bit(STATUS_RFKILL_OPMODE, &trans->status); |
994 | bool report; | |
727c02df | 995 | |
326477e4 JB |
996 | if (hw_rfkill) { |
997 | set_bit(STATUS_RFKILL_HW, &trans->status); | |
998 | set_bit(STATUS_RFKILL_OPMODE, &trans->status); | |
999 | } else { | |
1000 | clear_bit(STATUS_RFKILL_HW, &trans->status); | |
1001 | if (trans_pcie->opmode_down) | |
1002 | clear_bit(STATUS_RFKILL_OPMODE, &trans->status); | |
1003 | } | |
1004 | ||
1005 | report = test_bit(STATUS_RFKILL_OPMODE, &trans->status); | |
727c02df | 1006 | |
326477e4 JB |
1007 | if (prev != report) |
1008 | iwl_trans_pcie_rf_kill(trans, report); | |
727c02df SS |
1009 | |
1010 | return hw_rfkill; | |
1011 | } | |
1012 | ||
7ca00409 HD |
1013 | struct iwl_causes_list { |
1014 | u32 cause_num; | |
1015 | u32 mask_reg; | |
1016 | u8 addr; | |
1017 | }; | |
1018 | ||
1019 | static struct iwl_causes_list causes_list[] = { | |
1020 | {MSIX_FH_INT_CAUSES_D2S_CH0_NUM, CSR_MSIX_FH_INT_MASK_AD, 0}, | |
1021 | {MSIX_FH_INT_CAUSES_D2S_CH1_NUM, CSR_MSIX_FH_INT_MASK_AD, 0x1}, | |
1022 | {MSIX_FH_INT_CAUSES_S2D, CSR_MSIX_FH_INT_MASK_AD, 0x3}, | |
1023 | {MSIX_FH_INT_CAUSES_FH_ERR, CSR_MSIX_FH_INT_MASK_AD, 0x5}, | |
1024 | {MSIX_HW_INT_CAUSES_REG_ALIVE, CSR_MSIX_HW_INT_MASK_AD, 0x10}, | |
1025 | {MSIX_HW_INT_CAUSES_REG_WAKEUP, CSR_MSIX_HW_INT_MASK_AD, 0x11}, | |
1026 | {MSIX_HW_INT_CAUSES_REG_CT_KILL, CSR_MSIX_HW_INT_MASK_AD, 0x16}, | |
1027 | {MSIX_HW_INT_CAUSES_REG_RF_KILL, CSR_MSIX_HW_INT_MASK_AD, 0x17}, | |
1028 | {MSIX_HW_INT_CAUSES_REG_PERIODIC, CSR_MSIX_HW_INT_MASK_AD, 0x18}, | |
1029 | {MSIX_HW_INT_CAUSES_REG_SW_ERR, CSR_MSIX_HW_INT_MASK_AD, 0x29}, | |
1030 | {MSIX_HW_INT_CAUSES_REG_SCD, CSR_MSIX_HW_INT_MASK_AD, 0x2A}, | |
1031 | {MSIX_HW_INT_CAUSES_REG_FH_TX, CSR_MSIX_HW_INT_MASK_AD, 0x2B}, | |
1032 | {MSIX_HW_INT_CAUSES_REG_HW_ERR, CSR_MSIX_HW_INT_MASK_AD, 0x2D}, | |
1033 | {MSIX_HW_INT_CAUSES_REG_HAP, CSR_MSIX_HW_INT_MASK_AD, 0x2E}, | |
1034 | }; | |
1035 | ||
1036 | static void iwl_pcie_map_non_rx_causes(struct iwl_trans *trans) | |
1037 | { | |
1038 | struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans); | |
1039 | int val = trans_pcie->def_irq | MSIX_NON_AUTO_CLEAR_CAUSE; | |
1040 | int i; | |
1041 | ||
1042 | /* | |
1043 | * Access all non RX causes and map them to the default irq. | |
1044 | * In case we are missing at least one interrupt vector, | |
1045 | * the first interrupt vector will serve non-RX and FBQ causes. | |
1046 | */ | |
1047 | for (i = 0; i < ARRAY_SIZE(causes_list); i++) { | |
1048 | iwl_write8(trans, CSR_MSIX_IVAR(causes_list[i].addr), val); | |
1049 | iwl_clear_bit(trans, causes_list[i].mask_reg, | |
1050 | causes_list[i].cause_num); | |
1051 | } | |
1052 | } | |
1053 | ||
1054 | static void iwl_pcie_map_rx_causes(struct iwl_trans *trans) | |
1055 | { | |
1056 | struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans); | |
1057 | u32 offset = | |
1058 | trans_pcie->shared_vec_mask & IWL_SHARED_IRQ_FIRST_RSS ? 1 : 0; | |
1059 | u32 val, idx; | |
1060 | ||
1061 | /* | |
1062 | * The first RX queue - fallback queue, which is designated for | |
1063 | * management frame, command responses etc, is always mapped to the | |
1064 | * first interrupt vector. The other RX queues are mapped to | |
1065 | * the other (N - 2) interrupt vectors. | |
1066 | */ | |
1067 | val = BIT(MSIX_FH_INT_CAUSES_Q(0)); | |
1068 | for (idx = 1; idx < trans->num_rx_queues; idx++) { | |
1069 | iwl_write8(trans, CSR_MSIX_RX_IVAR(idx), | |
1070 | MSIX_FH_INT_CAUSES_Q(idx - offset)); | |
1071 | val |= BIT(MSIX_FH_INT_CAUSES_Q(idx)); | |
1072 | } | |
1073 | iwl_write32(trans, CSR_MSIX_FH_INT_MASK_AD, ~val); | |
1074 | ||
1075 | val = MSIX_FH_INT_CAUSES_Q(0); | |
1076 | if (trans_pcie->shared_vec_mask & IWL_SHARED_IRQ_NON_RX) | |
1077 | val |= MSIX_NON_AUTO_CLEAR_CAUSE; | |
1078 | iwl_write8(trans, CSR_MSIX_RX_IVAR(0), val); | |
1079 | ||
1080 | if (trans_pcie->shared_vec_mask & IWL_SHARED_IRQ_FIRST_RSS) | |
1081 | iwl_write8(trans, CSR_MSIX_RX_IVAR(1), val); | |
1082 | } | |
1083 | ||
77c09bc8 | 1084 | void iwl_pcie_conf_msix_hw(struct iwl_trans_pcie *trans_pcie) |
7ca00409 HD |
1085 | { |
1086 | struct iwl_trans *trans = trans_pcie->trans; | |
1087 | ||
1088 | if (!trans_pcie->msix_enabled) { | |
d7270d61 HD |
1089 | if (trans->cfg->mq_rx_supported && |
1090 | test_bit(STATUS_DEVICE_ENABLED, &trans->status)) | |
7ca00409 HD |
1091 | iwl_write_prph(trans, UREG_CHICK, |
1092 | UREG_CHICK_MSI_ENABLE); | |
1093 | return; | |
1094 | } | |
d7270d61 HD |
1095 | /* |
1096 | * The IVAR table needs to be configured again after reset, | |
1097 | * but if the device is disabled, we can't write to | |
1098 | * prph. | |
1099 | */ | |
1100 | if (test_bit(STATUS_DEVICE_ENABLED, &trans->status)) | |
1101 | iwl_write_prph(trans, UREG_CHICK, UREG_CHICK_MSIX_ENABLE); | |
7ca00409 HD |
1102 | |
1103 | /* | |
1104 | * Each cause from the causes list above and the RX causes is | |
1105 | * represented as a byte in the IVAR table. The first nibble | |
1106 | * represents the bound interrupt vector of the cause, the second | |
1107 | * represents no auto clear for this cause. This will be set if its | |
1108 | * interrupt vector is bound to serve other causes. | |
1109 | */ | |
1110 | iwl_pcie_map_rx_causes(trans); | |
1111 | ||
1112 | iwl_pcie_map_non_rx_causes(trans); | |
83730058 HD |
1113 | } |
1114 | ||
1115 | static void iwl_pcie_init_msix(struct iwl_trans_pcie *trans_pcie) | |
1116 | { | |
1117 | struct iwl_trans *trans = trans_pcie->trans; | |
1118 | ||
1119 | iwl_pcie_conf_msix_hw(trans_pcie); | |
7ca00409 | 1120 | |
83730058 HD |
1121 | if (!trans_pcie->msix_enabled) |
1122 | return; | |
1123 | ||
1124 | trans_pcie->fh_init_mask = ~iwl_read32(trans, CSR_MSIX_FH_INT_MASK_AD); | |
7ca00409 | 1125 | trans_pcie->fh_mask = trans_pcie->fh_init_mask; |
83730058 | 1126 | trans_pcie->hw_init_mask = ~iwl_read32(trans, CSR_MSIX_HW_INT_MASK_AD); |
7ca00409 HD |
1127 | trans_pcie->hw_mask = trans_pcie->hw_init_mask; |
1128 | } | |
1129 | ||
fa9f3281 | 1130 | static void _iwl_trans_pcie_stop_device(struct iwl_trans *trans, bool low_power) |
ae2c30bf | 1131 | { |
43e58856 | 1132 | struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans); |
3dc3374f | 1133 | |
fa9f3281 EG |
1134 | lockdep_assert_held(&trans_pcie->mutex); |
1135 | ||
1136 | if (trans_pcie->is_down) | |
1137 | return; | |
1138 | ||
1139 | trans_pcie->is_down = true; | |
1140 | ||
43e58856 | 1141 | /* tell the device to stop sending interrupts */ |
ae2c30bf | 1142 | iwl_disable_interrupts(trans); |
ae2c30bf | 1143 | |
ab6cf8e8 | 1144 | /* device going down, Stop using ICT table */ |
990aa6d7 | 1145 | iwl_pcie_disable_ict(trans); |
ab6cf8e8 EG |
1146 | |
1147 | /* | |
1148 | * If a HW restart happens during firmware loading, | |
1149 | * then the firmware loading might call this function | |
1150 | * and later it might be called again due to the | |
1151 | * restart. So don't process again if the device is | |
1152 | * already dead. | |
1153 | */ | |
31b8b343 | 1154 | if (test_and_clear_bit(STATUS_DEVICE_ENABLED, &trans->status)) { |
a6bd005f EG |
1155 | IWL_DEBUG_INFO(trans, |
1156 | "DEVICE_ENABLED bit was set and is now cleared\n"); | |
f02831be | 1157 | iwl_pcie_tx_stop(trans); |
9805c446 | 1158 | iwl_pcie_rx_stop(trans); |
6379103e | 1159 | |
ab6cf8e8 | 1160 | /* Power-down device's busmaster DMA clocks */ |
95411d04 | 1161 | if (!trans->cfg->apmg_not_supported) { |
1aa02b5a AA |
1162 | iwl_write_prph(trans, APMG_CLK_DIS_REG, |
1163 | APMG_CLK_VAL_DMA_CLK_RQT); | |
1164 | udelay(5); | |
1165 | } | |
ab6cf8e8 EG |
1166 | } |
1167 | ||
1168 | /* Make sure (redundant) we've released our request to stay awake */ | |
1042db2a | 1169 | iwl_clear_bit(trans, CSR_GP_CNTRL, |
20d3b647 | 1170 | CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ); |
ab6cf8e8 EG |
1171 | |
1172 | /* Stop the device, and put it in low power state */ | |
b7aaeae4 | 1173 | iwl_pcie_apm_stop(trans, false); |
43e58856 | 1174 | |
099a628b | 1175 | iwl_pcie_sw_reset(trans); |
03d6c3b0 | 1176 | |
f4a1f04a GBA |
1177 | /* |
1178 | * Upon stop, the IVAR table gets erased, so msi-x won't | |
1179 | * work. This causes a bug in RF-KILL flows, since the interrupt | |
1180 | * that enables radio won't fire on the correct irq, and the | |
1181 | * driver won't be able to handle the interrupt. | |
1182 | * Configure the IVAR table again after reset. | |
1183 | */ | |
1184 | iwl_pcie_conf_msix_hw(trans_pcie); | |
1185 | ||
03d6c3b0 EG |
1186 | /* |
1187 | * Upon stop, the APM issues an interrupt if HW RF kill is set. | |
1188 | * This is a bug in certain verions of the hardware. | |
1189 | * Certain devices also keep sending HW RF kill interrupt all | |
1190 | * the time, unless the interrupt is ACKed even if the interrupt | |
1191 | * should be masked. Re-ACK all the interrupts here. | |
43e58856 | 1192 | */ |
43e58856 | 1193 | iwl_disable_interrupts(trans); |
43e58856 | 1194 | |
74fda971 | 1195 | /* clear all status bits */ |
eb7ff77e AN |
1196 | clear_bit(STATUS_SYNC_HCMD_ACTIVE, &trans->status); |
1197 | clear_bit(STATUS_INT_ENABLED, &trans->status); | |
eb7ff77e | 1198 | clear_bit(STATUS_TPOWER_PMI, &trans->status); |
a4082843 AN |
1199 | |
1200 | /* | |
1201 | * Even if we stop the HW, we still want the RF kill | |
1202 | * interrupt | |
1203 | */ | |
1204 | iwl_enable_rfkill_int(trans); | |
1205 | ||
a6bd005f | 1206 | /* re-take ownership to prevent other users from stealing the device */ |
655e5cf0 | 1207 | iwl_pcie_prepare_card_hw(trans); |
14cfca71 JB |
1208 | } |
1209 | ||
eda50cde | 1210 | void iwl_pcie_synchronize_irqs(struct iwl_trans *trans) |
2e5d4a8f HD |
1211 | { |
1212 | struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans); | |
1213 | ||
1214 | if (trans_pcie->msix_enabled) { | |
1215 | int i; | |
1216 | ||
496d83ca | 1217 | for (i = 0; i < trans_pcie->alloc_vecs; i++) |
2e5d4a8f HD |
1218 | synchronize_irq(trans_pcie->msix_entries[i].vector); |
1219 | } else { | |
1220 | synchronize_irq(trans_pcie->pci_dev->irq); | |
1221 | } | |
1222 | } | |
1223 | ||
a6bd005f EG |
1224 | static int iwl_trans_pcie_start_fw(struct iwl_trans *trans, |
1225 | const struct fw_img *fw, bool run_in_rfkill) | |
1226 | { | |
1227 | struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans); | |
1228 | bool hw_rfkill; | |
1229 | int ret; | |
1230 | ||
1231 | /* This may fail if AMT took ownership of the device */ | |
1232 | if (iwl_pcie_prepare_card_hw(trans)) { | |
1233 | IWL_WARN(trans, "Exit HW not ready\n"); | |
1234 | ret = -EIO; | |
1235 | goto out; | |
1236 | } | |
1237 | ||
1238 | iwl_enable_rfkill_int(trans); | |
1239 | ||
1240 | iwl_write32(trans, CSR_INT, 0xFFFFFFFF); | |
1241 | ||
1242 | /* | |
1243 | * We enabled the RF-Kill interrupt and the handler may very | |
1244 | * well be running. Disable the interrupts to make sure no other | |
1245 | * interrupt can be fired. | |
1246 | */ | |
1247 | iwl_disable_interrupts(trans); | |
1248 | ||
1249 | /* Make sure it finished running */ | |
2e5d4a8f | 1250 | iwl_pcie_synchronize_irqs(trans); |
a6bd005f EG |
1251 | |
1252 | mutex_lock(&trans_pcie->mutex); | |
1253 | ||
1254 | /* If platform's RF_KILL switch is NOT set to KILL */ | |
727c02df | 1255 | hw_rfkill = iwl_trans_check_hw_rf_kill(trans); |
a6bd005f EG |
1256 | if (hw_rfkill && !run_in_rfkill) { |
1257 | ret = -ERFKILL; | |
1258 | goto out; | |
1259 | } | |
1260 | ||
1261 | /* Someone called stop_device, don't try to start_fw */ | |
1262 | if (trans_pcie->is_down) { | |
1263 | IWL_WARN(trans, | |
1264 | "Can't start_fw since the HW hasn't been started\n"); | |
20aa99bb | 1265 | ret = -EIO; |
a6bd005f EG |
1266 | goto out; |
1267 | } | |
1268 | ||
1269 | /* make sure rfkill handshake bits are cleared */ | |
1270 | iwl_write32(trans, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL); | |
1271 | iwl_write32(trans, CSR_UCODE_DRV_GP1_CLR, | |
1272 | CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED); | |
1273 | ||
1274 | /* clear (again), then enable host interrupts */ | |
1275 | iwl_write32(trans, CSR_INT, 0xFFFFFFFF); | |
1276 | ||
1277 | ret = iwl_pcie_nic_init(trans); | |
1278 | if (ret) { | |
1279 | IWL_ERR(trans, "Unable to init nic\n"); | |
1280 | goto out; | |
1281 | } | |
1282 | ||
1283 | /* | |
1284 | * Now, we load the firmware and don't want to be interrupted, even | |
1285 | * by the RF-Kill interrupt (hence mask all the interrupt besides the | |
1286 | * FH_TX interrupt which is needed to load the firmware). If the | |
1287 | * RF-Kill switch is toggled, we will find out after having loaded | |
1288 | * the firmware and return the proper value to the caller. | |
1289 | */ | |
1290 | iwl_enable_fw_load_int(trans); | |
1291 | ||
1292 | /* really make sure rfkill handshake bits are cleared */ | |
1293 | iwl_write32(trans, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL); | |
1294 | iwl_write32(trans, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL); | |
1295 | ||
1296 | /* Load the given image to the HW */ | |
6e584873 | 1297 | if (trans->cfg->device_family >= IWL_DEVICE_FAMILY_8000) |
a6bd005f EG |
1298 | ret = iwl_pcie_load_given_ucode_8000(trans, fw); |
1299 | else | |
1300 | ret = iwl_pcie_load_given_ucode(trans, fw); | |
a6bd005f EG |
1301 | |
1302 | /* re-check RF-Kill state since we may have missed the interrupt */ | |
727c02df | 1303 | hw_rfkill = iwl_trans_check_hw_rf_kill(trans); |
a6bd005f EG |
1304 | if (hw_rfkill && !run_in_rfkill) |
1305 | ret = -ERFKILL; | |
1306 | ||
1307 | out: | |
1308 | mutex_unlock(&trans_pcie->mutex); | |
1309 | return ret; | |
1310 | } | |
1311 | ||
1312 | static void iwl_trans_pcie_fw_alive(struct iwl_trans *trans, u32 scd_addr) | |
1313 | { | |
1314 | iwl_pcie_reset_ict(trans); | |
1315 | iwl_pcie_tx_start(trans, scd_addr); | |
1316 | } | |
1317 | ||
326477e4 JB |
1318 | void iwl_trans_pcie_handle_stop_rfkill(struct iwl_trans *trans, |
1319 | bool was_in_rfkill) | |
1320 | { | |
1321 | bool hw_rfkill; | |
1322 | ||
1323 | /* | |
1324 | * Check again since the RF kill state may have changed while | |
1325 | * all the interrupts were disabled, in this case we couldn't | |
1326 | * receive the RF kill interrupt and update the state in the | |
1327 | * op_mode. | |
1328 | * Don't call the op_mode if the rkfill state hasn't changed. | |
1329 | * This allows the op_mode to call stop_device from the rfkill | |
1330 | * notification without endless recursion. Under very rare | |
1331 | * circumstances, we might have a small recursion if the rfkill | |
1332 | * state changed exactly now while we were called from stop_device. | |
1333 | * This is very unlikely but can happen and is supported. | |
1334 | */ | |
1335 | hw_rfkill = iwl_is_rfkill_set(trans); | |
1336 | if (hw_rfkill) { | |
1337 | set_bit(STATUS_RFKILL_HW, &trans->status); | |
1338 | set_bit(STATUS_RFKILL_OPMODE, &trans->status); | |
1339 | } else { | |
1340 | clear_bit(STATUS_RFKILL_HW, &trans->status); | |
1341 | clear_bit(STATUS_RFKILL_OPMODE, &trans->status); | |
1342 | } | |
1343 | if (hw_rfkill != was_in_rfkill) | |
1344 | iwl_trans_pcie_rf_kill(trans, hw_rfkill); | |
1345 | } | |
1346 | ||
fa9f3281 EG |
1347 | static void iwl_trans_pcie_stop_device(struct iwl_trans *trans, bool low_power) |
1348 | { | |
1349 | struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans); | |
326477e4 | 1350 | bool was_in_rfkill; |
fa9f3281 EG |
1351 | |
1352 | mutex_lock(&trans_pcie->mutex); | |
326477e4 JB |
1353 | trans_pcie->opmode_down = true; |
1354 | was_in_rfkill = test_bit(STATUS_RFKILL_OPMODE, &trans->status); | |
fa9f3281 | 1355 | _iwl_trans_pcie_stop_device(trans, low_power); |
326477e4 | 1356 | iwl_trans_pcie_handle_stop_rfkill(trans, was_in_rfkill); |
fa9f3281 EG |
1357 | mutex_unlock(&trans_pcie->mutex); |
1358 | } | |
1359 | ||
14cfca71 JB |
1360 | void iwl_trans_pcie_rf_kill(struct iwl_trans *trans, bool state) |
1361 | { | |
fa9f3281 EG |
1362 | struct iwl_trans_pcie __maybe_unused *trans_pcie = |
1363 | IWL_TRANS_GET_PCIE_TRANS(trans); | |
1364 | ||
1365 | lockdep_assert_held(&trans_pcie->mutex); | |
1366 | ||
326477e4 JB |
1367 | IWL_WARN(trans, "reporting RF_KILL (radio %s)\n", |
1368 | state ? "disabled" : "enabled"); | |
77c09bc8 SS |
1369 | if (iwl_op_mode_hw_rf_kill(trans->op_mode, state)) { |
1370 | if (trans->cfg->gen2) | |
1371 | _iwl_trans_pcie_gen2_stop_device(trans, true); | |
1372 | else | |
1373 | _iwl_trans_pcie_stop_device(trans, true); | |
1374 | } | |
ab6cf8e8 EG |
1375 | } |
1376 | ||
23ae6128 MG |
1377 | static void iwl_trans_pcie_d3_suspend(struct iwl_trans *trans, bool test, |
1378 | bool reset) | |
2dd4f9f7 | 1379 | { |
23ae6128 | 1380 | if (!reset) { |
6dfb36c8 EP |
1381 | /* Enable persistence mode to avoid reset */ |
1382 | iwl_set_bit(trans, CSR_HW_IF_CONFIG_REG, | |
1383 | CSR_HW_IF_CONFIG_REG_PERSIST_MODE); | |
1384 | } | |
1385 | ||
2dd4f9f7 | 1386 | iwl_disable_interrupts(trans); |
debff618 JB |
1387 | |
1388 | /* | |
1389 | * in testing mode, the host stays awake and the | |
1390 | * hardware won't be reset (not even partially) | |
1391 | */ | |
1392 | if (test) | |
1393 | return; | |
1394 | ||
ddaf5a5b JB |
1395 | iwl_pcie_disable_ict(trans); |
1396 | ||
2e5d4a8f | 1397 | iwl_pcie_synchronize_irqs(trans); |
33b56af1 | 1398 | |
2dd4f9f7 JB |
1399 | iwl_clear_bit(trans, CSR_GP_CNTRL, |
1400 | CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ); | |
ddaf5a5b JB |
1401 | iwl_clear_bit(trans, CSR_GP_CNTRL, |
1402 | CSR_GP_CNTRL_REG_FLAG_INIT_DONE); | |
1403 | ||
1316d595 SS |
1404 | iwl_pcie_enable_rx_wake(trans, false); |
1405 | ||
23ae6128 | 1406 | if (reset) { |
6dfb36c8 EP |
1407 | /* |
1408 | * reset TX queues -- some of their registers reset during S3 | |
1409 | * so if we don't reset everything here the D3 image would try | |
1410 | * to execute some invalid memory upon resume | |
1411 | */ | |
1412 | iwl_trans_pcie_tx_reset(trans); | |
1413 | } | |
ddaf5a5b JB |
1414 | |
1415 | iwl_pcie_set_pwr(trans, true); | |
1416 | } | |
1417 | ||
1418 | static int iwl_trans_pcie_d3_resume(struct iwl_trans *trans, | |
debff618 | 1419 | enum iwl_d3_status *status, |
23ae6128 | 1420 | bool test, bool reset) |
ddaf5a5b | 1421 | { |
d7270d61 | 1422 | struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans); |
ddaf5a5b JB |
1423 | u32 val; |
1424 | int ret; | |
1425 | ||
debff618 JB |
1426 | if (test) { |
1427 | iwl_enable_interrupts(trans); | |
1428 | *status = IWL_D3_STATUS_ALIVE; | |
1429 | return 0; | |
1430 | } | |
1431 | ||
1316d595 SS |
1432 | iwl_pcie_enable_rx_wake(trans, true); |
1433 | ||
ddaf5a5b | 1434 | /* |
d7270d61 HD |
1435 | * Reconfigure IVAR table in case of MSIX or reset ict table in |
1436 | * MSI mode since HW reset erased it. | |
1437 | * Also enables interrupts - none will happen as | |
1438 | * the device doesn't know we're waking it up, only when | |
1439 | * the opmode actually tells it after this call. | |
ddaf5a5b | 1440 | */ |
d7270d61 HD |
1441 | iwl_pcie_conf_msix_hw(trans_pcie); |
1442 | if (!trans_pcie->msix_enabled) | |
1443 | iwl_pcie_reset_ict(trans); | |
18dcb9a9 | 1444 | iwl_enable_interrupts(trans); |
ddaf5a5b JB |
1445 | |
1446 | iwl_set_bit(trans, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ); | |
1447 | iwl_set_bit(trans, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_INIT_DONE); | |
1448 | ||
6e584873 | 1449 | if (trans->cfg->device_family >= IWL_DEVICE_FAMILY_8000) |
01e58a28 EG |
1450 | udelay(2); |
1451 | ||
ddaf5a5b JB |
1452 | ret = iwl_poll_bit(trans, CSR_GP_CNTRL, |
1453 | CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY, | |
1454 | CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY, | |
1455 | 25000); | |
7f2ac8fb | 1456 | if (ret < 0) { |
ddaf5a5b JB |
1457 | IWL_ERR(trans, "Failed to resume the device (mac ready)\n"); |
1458 | return ret; | |
1459 | } | |
1460 | ||
a3ead656 EG |
1461 | iwl_pcie_set_pwr(trans, false); |
1462 | ||
23ae6128 | 1463 | if (!reset) { |
6dfb36c8 EP |
1464 | iwl_clear_bit(trans, CSR_GP_CNTRL, |
1465 | CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ); | |
1466 | } else { | |
1467 | iwl_trans_pcie_tx_reset(trans); | |
ddaf5a5b | 1468 | |
6dfb36c8 EP |
1469 | ret = iwl_pcie_rx_init(trans); |
1470 | if (ret) { | |
1471 | IWL_ERR(trans, | |
1472 | "Failed to resume the device (RX reset)\n"); | |
1473 | return ret; | |
1474 | } | |
ddaf5a5b JB |
1475 | } |
1476 | ||
82ea7966 SS |
1477 | IWL_DEBUG_POWER(trans, "WFPM value upon resume = 0x%08X\n", |
1478 | iwl_read_prph(trans, WFPM_GP2)); | |
1479 | ||
a3ead656 EG |
1480 | val = iwl_read32(trans, CSR_RESET); |
1481 | if (val & CSR_RESET_REG_FLAG_NEVO_RESET) | |
1482 | *status = IWL_D3_STATUS_RESET; | |
1483 | else | |
1484 | *status = IWL_D3_STATUS_ALIVE; | |
1485 | ||
ddaf5a5b | 1486 | return 0; |
2dd4f9f7 JB |
1487 | } |
1488 | ||
2e5d4a8f HD |
1489 | static void iwl_pcie_set_interrupt_capa(struct pci_dev *pdev, |
1490 | struct iwl_trans *trans) | |
1491 | { | |
1492 | struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans); | |
9fb064df | 1493 | int max_irqs, num_irqs, i, ret, nr_online_cpus; |
2e5d4a8f | 1494 | u16 pci_cmd; |
2e5d4a8f | 1495 | |
06f4b081 SS |
1496 | if (!trans->cfg->mq_rx_supported) |
1497 | goto enable_msi; | |
1498 | ||
9fb064df HD |
1499 | nr_online_cpus = num_online_cpus(); |
1500 | max_irqs = min_t(u32, nr_online_cpus + 2, IWL_MAX_RX_HW_QUEUES); | |
06f4b081 SS |
1501 | for (i = 0; i < max_irqs; i++) |
1502 | trans_pcie->msix_entries[i].entry = i; | |
496d83ca | 1503 | |
06f4b081 SS |
1504 | num_irqs = pci_enable_msix_range(pdev, trans_pcie->msix_entries, |
1505 | MSIX_MIN_INTERRUPT_VECTORS, | |
1506 | max_irqs); | |
1507 | if (num_irqs < 0) { | |
2e5d4a8f | 1508 | IWL_DEBUG_INFO(trans, |
06f4b081 SS |
1509 | "Failed to enable msi-x mode (ret %d). Moving to msi mode.\n", |
1510 | num_irqs); | |
1511 | goto enable_msi; | |
1512 | } | |
1513 | trans_pcie->def_irq = (num_irqs == max_irqs) ? num_irqs - 1 : 0; | |
496d83ca | 1514 | |
06f4b081 SS |
1515 | IWL_DEBUG_INFO(trans, |
1516 | "MSI-X enabled. %d interrupt vectors were allocated\n", | |
1517 | num_irqs); | |
1518 | ||
1519 | /* | |
1520 | * In case the OS provides fewer interrupts than requested, different | |
1521 | * causes will share the same interrupt vector as follows: | |
1522 | * One interrupt less: non rx causes shared with FBQ. | |
1523 | * Two interrupts less: non rx causes shared with FBQ and RSS. | |
1524 | * More than two interrupts: we will use fewer RSS queues. | |
1525 | */ | |
9fb064df | 1526 | if (num_irqs <= nr_online_cpus) { |
06f4b081 SS |
1527 | trans_pcie->trans->num_rx_queues = num_irqs + 1; |
1528 | trans_pcie->shared_vec_mask = IWL_SHARED_IRQ_NON_RX | | |
1529 | IWL_SHARED_IRQ_FIRST_RSS; | |
9fb064df | 1530 | } else if (num_irqs == nr_online_cpus + 1) { |
06f4b081 SS |
1531 | trans_pcie->trans->num_rx_queues = num_irqs; |
1532 | trans_pcie->shared_vec_mask = IWL_SHARED_IRQ_NON_RX; | |
1533 | } else { | |
1534 | trans_pcie->trans->num_rx_queues = num_irqs - 1; | |
2e5d4a8f HD |
1535 | } |
1536 | ||
06f4b081 SS |
1537 | trans_pcie->alloc_vecs = num_irqs; |
1538 | trans_pcie->msix_enabled = true; | |
1539 | return; | |
1540 | ||
1541 | enable_msi: | |
1542 | ret = pci_enable_msi(pdev); | |
1543 | if (ret) { | |
1544 | dev_err(&pdev->dev, "pci_enable_msi failed - %d\n", ret); | |
2e5d4a8f HD |
1545 | /* enable rfkill interrupt: hw bug w/a */ |
1546 | pci_read_config_word(pdev, PCI_COMMAND, &pci_cmd); | |
1547 | if (pci_cmd & PCI_COMMAND_INTX_DISABLE) { | |
1548 | pci_cmd &= ~PCI_COMMAND_INTX_DISABLE; | |
1549 | pci_write_config_word(pdev, PCI_COMMAND, pci_cmd); | |
1550 | } | |
1551 | } | |
1552 | } | |
1553 | ||
7c8d91eb HD |
1554 | static void iwl_pcie_irq_set_affinity(struct iwl_trans *trans) |
1555 | { | |
1556 | int iter_rx_q, i, ret, cpu, offset; | |
1557 | struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans); | |
1558 | ||
1559 | i = trans_pcie->shared_vec_mask & IWL_SHARED_IRQ_FIRST_RSS ? 0 : 1; | |
1560 | iter_rx_q = trans_pcie->trans->num_rx_queues - 1 + i; | |
1561 | offset = 1 + i; | |
1562 | for (; i < iter_rx_q ; i++) { | |
1563 | /* | |
1564 | * Get the cpu prior to the place to search | |
1565 | * (i.e. return will be > i - 1). | |
1566 | */ | |
1567 | cpu = cpumask_next(i - offset, cpu_online_mask); | |
1568 | cpumask_set_cpu(cpu, &trans_pcie->affinity_mask[i]); | |
1569 | ret = irq_set_affinity_hint(trans_pcie->msix_entries[i].vector, | |
1570 | &trans_pcie->affinity_mask[i]); | |
1571 | if (ret) | |
1572 | IWL_ERR(trans_pcie->trans, | |
1573 | "Failed to set affinity mask for IRQ %d\n", | |
1574 | i); | |
1575 | } | |
1576 | } | |
1577 | ||
64fa3aff SD |
1578 | static const char *queue_name(struct device *dev, |
1579 | struct iwl_trans_pcie *trans_p, int i) | |
1580 | { | |
1581 | if (trans_p->shared_vec_mask) { | |
1582 | int vec = trans_p->shared_vec_mask & | |
1583 | IWL_SHARED_IRQ_FIRST_RSS ? 1 : 0; | |
1584 | ||
1585 | if (i == 0) | |
1586 | return DRV_NAME ": shared IRQ"; | |
1587 | ||
1588 | return devm_kasprintf(dev, GFP_KERNEL, | |
1589 | DRV_NAME ": queue %d", i + vec); | |
1590 | } | |
1591 | if (i == 0) | |
1592 | return DRV_NAME ": default queue"; | |
1593 | ||
1594 | if (i == trans_p->alloc_vecs - 1) | |
1595 | return DRV_NAME ": exception"; | |
1596 | ||
1597 | return devm_kasprintf(dev, GFP_KERNEL, | |
1598 | DRV_NAME ": queue %d", i); | |
1599 | } | |
1600 | ||
2e5d4a8f HD |
1601 | static int iwl_pcie_init_msix_handler(struct pci_dev *pdev, |
1602 | struct iwl_trans_pcie *trans_pcie) | |
1603 | { | |
496d83ca | 1604 | int i; |
2e5d4a8f | 1605 | |
496d83ca | 1606 | for (i = 0; i < trans_pcie->alloc_vecs; i++) { |
2e5d4a8f | 1607 | int ret; |
5a41a86c | 1608 | struct msix_entry *msix_entry; |
64fa3aff SD |
1609 | const char *qname = queue_name(&pdev->dev, trans_pcie, i); |
1610 | ||
1611 | if (!qname) | |
1612 | return -ENOMEM; | |
5a41a86c SD |
1613 | |
1614 | msix_entry = &trans_pcie->msix_entries[i]; | |
1615 | ret = devm_request_threaded_irq(&pdev->dev, | |
1616 | msix_entry->vector, | |
1617 | iwl_pcie_msix_isr, | |
1618 | (i == trans_pcie->def_irq) ? | |
1619 | iwl_pcie_irq_msix_handler : | |
1620 | iwl_pcie_irq_rx_msix_handler, | |
1621 | IRQF_SHARED, | |
64fa3aff | 1622 | qname, |
5a41a86c | 1623 | msix_entry); |
2e5d4a8f | 1624 | if (ret) { |
2e5d4a8f HD |
1625 | IWL_ERR(trans_pcie->trans, |
1626 | "Error allocating IRQ %d\n", i); | |
5a41a86c | 1627 | |
2e5d4a8f HD |
1628 | return ret; |
1629 | } | |
1630 | } | |
7c8d91eb | 1631 | iwl_pcie_irq_set_affinity(trans_pcie->trans); |
2e5d4a8f HD |
1632 | |
1633 | return 0; | |
1634 | } | |
1635 | ||
fa9f3281 | 1636 | static int _iwl_trans_pcie_start_hw(struct iwl_trans *trans, bool low_power) |
e6bb4c9c | 1637 | { |
fa9f3281 | 1638 | struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans); |
a8b691e6 | 1639 | int err; |
e6bb4c9c | 1640 | |
fa9f3281 EG |
1641 | lockdep_assert_held(&trans_pcie->mutex); |
1642 | ||
7afe3705 | 1643 | err = iwl_pcie_prepare_card_hw(trans); |
ebb7678d | 1644 | if (err) { |
d6f1c316 | 1645 | IWL_ERR(trans, "Error while preparing HW: %d\n", err); |
a8b691e6 | 1646 | return err; |
ebb7678d | 1647 | } |
a6c684ee | 1648 | |
099a628b | 1649 | iwl_pcie_sw_reset(trans); |
2997494f | 1650 | |
52b6e168 EG |
1651 | err = iwl_pcie_apm_init(trans); |
1652 | if (err) | |
1653 | return err; | |
a6c684ee | 1654 | |
2e5d4a8f | 1655 | iwl_pcie_init_msix(trans_pcie); |
83730058 | 1656 | |
226c02ca EG |
1657 | /* From now on, the op_mode will be kept updated about RF kill state */ |
1658 | iwl_enable_rfkill_int(trans); | |
1659 | ||
326477e4 JB |
1660 | trans_pcie->opmode_down = false; |
1661 | ||
fa9f3281 EG |
1662 | /* Set is_down to false here so that...*/ |
1663 | trans_pcie->is_down = false; | |
1664 | ||
727c02df SS |
1665 | /* ...rfkill can call stop_device and set it false if needed */ |
1666 | iwl_trans_check_hw_rf_kill(trans); | |
d48e2074 | 1667 | |
4cbb8e50 LC |
1668 | /* Make sure we sync here, because we'll need full access later */ |
1669 | if (low_power) | |
1670 | pm_runtime_resume(trans->dev); | |
1671 | ||
a8b691e6 | 1672 | return 0; |
e6bb4c9c EG |
1673 | } |
1674 | ||
fa9f3281 EG |
1675 | static int iwl_trans_pcie_start_hw(struct iwl_trans *trans, bool low_power) |
1676 | { | |
1677 | struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans); | |
1678 | int ret; | |
1679 | ||
1680 | mutex_lock(&trans_pcie->mutex); | |
1681 | ret = _iwl_trans_pcie_start_hw(trans, low_power); | |
1682 | mutex_unlock(&trans_pcie->mutex); | |
1683 | ||
1684 | return ret; | |
1685 | } | |
1686 | ||
a4082843 | 1687 | static void iwl_trans_pcie_op_mode_leave(struct iwl_trans *trans) |
cc56feb2 | 1688 | { |
20d3b647 | 1689 | struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans); |
d23f78e6 | 1690 | |
fa9f3281 EG |
1691 | mutex_lock(&trans_pcie->mutex); |
1692 | ||
a4082843 | 1693 | /* disable interrupts - don't enable HW RF kill interrupt */ |
ee7d737c | 1694 | iwl_disable_interrupts(trans); |
ee7d737c | 1695 | |
b7aaeae4 | 1696 | iwl_pcie_apm_stop(trans, true); |
cc56feb2 | 1697 | |
218733cf | 1698 | iwl_disable_interrupts(trans); |
1df06bdc | 1699 | |
8d96bb61 | 1700 | iwl_pcie_disable_ict(trans); |
33b56af1 | 1701 | |
fa9f3281 | 1702 | mutex_unlock(&trans_pcie->mutex); |
33b56af1 | 1703 | |
2e5d4a8f | 1704 | iwl_pcie_synchronize_irqs(trans); |
cc56feb2 EG |
1705 | } |
1706 | ||
03905495 EG |
1707 | static void iwl_trans_pcie_write8(struct iwl_trans *trans, u32 ofs, u8 val) |
1708 | { | |
05f5b97e | 1709 | writeb(val, IWL_TRANS_GET_PCIE_TRANS(trans)->hw_base + ofs); |
03905495 EG |
1710 | } |
1711 | ||
1712 | static void iwl_trans_pcie_write32(struct iwl_trans *trans, u32 ofs, u32 val) | |
1713 | { | |
05f5b97e | 1714 | writel(val, IWL_TRANS_GET_PCIE_TRANS(trans)->hw_base + ofs); |
03905495 EG |
1715 | } |
1716 | ||
1717 | static u32 iwl_trans_pcie_read32(struct iwl_trans *trans, u32 ofs) | |
1718 | { | |
05f5b97e | 1719 | return readl(IWL_TRANS_GET_PCIE_TRANS(trans)->hw_base + ofs); |
03905495 EG |
1720 | } |
1721 | ||
6a06b6c1 EG |
1722 | static u32 iwl_trans_pcie_read_prph(struct iwl_trans *trans, u32 reg) |
1723 | { | |
f9477c17 AP |
1724 | iwl_trans_pcie_write32(trans, HBUS_TARG_PRPH_RADDR, |
1725 | ((reg & 0x000FFFFF) | (3 << 24))); | |
6a06b6c1 EG |
1726 | return iwl_trans_pcie_read32(trans, HBUS_TARG_PRPH_RDAT); |
1727 | } | |
1728 | ||
1729 | static void iwl_trans_pcie_write_prph(struct iwl_trans *trans, u32 addr, | |
1730 | u32 val) | |
1731 | { | |
1732 | iwl_trans_pcie_write32(trans, HBUS_TARG_PRPH_WADDR, | |
f9477c17 | 1733 | ((addr & 0x000FFFFF) | (3 << 24))); |
6a06b6c1 EG |
1734 | iwl_trans_pcie_write32(trans, HBUS_TARG_PRPH_WDAT, val); |
1735 | } | |
1736 | ||
c6f600fc | 1737 | static void iwl_trans_pcie_configure(struct iwl_trans *trans, |
9eae88fa | 1738 | const struct iwl_trans_config *trans_cfg) |
c6f600fc MV |
1739 | { |
1740 | struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans); | |
1741 | ||
1742 | trans_pcie->cmd_queue = trans_cfg->cmd_queue; | |
b04db9ac | 1743 | trans_pcie->cmd_fifo = trans_cfg->cmd_fifo; |
4cf677fd | 1744 | trans_pcie->cmd_q_wdg_timeout = trans_cfg->cmd_q_wdg_timeout; |
d663ee73 JB |
1745 | if (WARN_ON(trans_cfg->n_no_reclaim_cmds > MAX_NO_RECLAIM_CMDS)) |
1746 | trans_pcie->n_no_reclaim_cmds = 0; | |
1747 | else | |
1748 | trans_pcie->n_no_reclaim_cmds = trans_cfg->n_no_reclaim_cmds; | |
1749 | if (trans_pcie->n_no_reclaim_cmds) | |
1750 | memcpy(trans_pcie->no_reclaim_cmds, trans_cfg->no_reclaim_cmds, | |
1751 | trans_pcie->n_no_reclaim_cmds * sizeof(u8)); | |
9eae88fa | 1752 | |
6c4fbcbc EG |
1753 | trans_pcie->rx_buf_size = trans_cfg->rx_buf_size; |
1754 | trans_pcie->rx_page_order = | |
1755 | iwl_trans_get_rb_size_order(trans_pcie->rx_buf_size); | |
7c5ba4a8 | 1756 | |
046db346 | 1757 | trans_pcie->bc_table_dword = trans_cfg->bc_table_dword; |
3a736bcb | 1758 | trans_pcie->scd_set_active = trans_cfg->scd_set_active; |
41837ca9 | 1759 | trans_pcie->sw_csum_tx = trans_cfg->sw_csum_tx; |
f14d6b39 | 1760 | |
21cb3222 JB |
1761 | trans_pcie->page_offs = trans_cfg->cb_data_offs; |
1762 | trans_pcie->dev_cmd_offs = trans_cfg->cb_data_offs + sizeof(void *); | |
1763 | ||
39bdb17e SD |
1764 | trans->command_groups = trans_cfg->command_groups; |
1765 | trans->command_groups_size = trans_cfg->command_groups_size; | |
1766 | ||
f14d6b39 JB |
1767 | /* Initialize NAPI here - it should be before registering to mac80211 |
1768 | * in the opmode but after the HW struct is allocated. | |
1769 | * As this function may be called again in some corner cases don't | |
1770 | * do anything if NAPI was already initialized. | |
1771 | */ | |
bce97731 | 1772 | if (trans_pcie->napi_dev.reg_state != NETREG_DUMMY) |
f14d6b39 | 1773 | init_dummy_netdev(&trans_pcie->napi_dev); |
c6f600fc MV |
1774 | } |
1775 | ||
d1ff5253 | 1776 | void iwl_trans_pcie_free(struct iwl_trans *trans) |
34c1b7ba | 1777 | { |
20d3b647 | 1778 | struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans); |
6eb5e529 | 1779 | int i; |
a42a1844 | 1780 | |
2e5d4a8f | 1781 | iwl_pcie_synchronize_irqs(trans); |
0aa86df6 | 1782 | |
13a3a390 SS |
1783 | if (trans->cfg->gen2) |
1784 | iwl_pcie_gen2_tx_free(trans); | |
1785 | else | |
1786 | iwl_pcie_tx_free(trans); | |
9805c446 | 1787 | iwl_pcie_rx_free(trans); |
6379103e | 1788 | |
2e5d4a8f | 1789 | if (trans_pcie->msix_enabled) { |
7c8d91eb HD |
1790 | for (i = 0; i < trans_pcie->alloc_vecs; i++) { |
1791 | irq_set_affinity_hint( | |
1792 | trans_pcie->msix_entries[i].vector, | |
1793 | NULL); | |
7c8d91eb | 1794 | } |
2e5d4a8f | 1795 | |
2e5d4a8f HD |
1796 | trans_pcie->msix_enabled = false; |
1797 | } else { | |
2e5d4a8f | 1798 | iwl_pcie_free_ict(trans); |
2e5d4a8f | 1799 | } |
a42a1844 | 1800 | |
c2d20201 EG |
1801 | iwl_pcie_free_fw_monitor(trans); |
1802 | ||
6eb5e529 EG |
1803 | for_each_possible_cpu(i) { |
1804 | struct iwl_tso_hdr_page *p = | |
1805 | per_cpu_ptr(trans_pcie->tso_hdr_page, i); | |
1806 | ||
1807 | if (p->page) | |
1808 | __free_page(p->page); | |
1809 | } | |
1810 | ||
1811 | free_percpu(trans_pcie->tso_hdr_page); | |
a2a57a35 | 1812 | mutex_destroy(&trans_pcie->mutex); |
7b501d10 | 1813 | iwl_trans_free(trans); |
34c1b7ba EG |
1814 | } |
1815 | ||
47107e84 DF |
1816 | static void iwl_trans_pcie_set_pmi(struct iwl_trans *trans, bool state) |
1817 | { | |
47107e84 | 1818 | if (state) |
eb7ff77e | 1819 | set_bit(STATUS_TPOWER_PMI, &trans->status); |
47107e84 | 1820 | else |
eb7ff77e | 1821 | clear_bit(STATUS_TPOWER_PMI, &trans->status); |
47107e84 DF |
1822 | } |
1823 | ||
23ba9340 EG |
1824 | static bool iwl_trans_pcie_grab_nic_access(struct iwl_trans *trans, |
1825 | unsigned long *flags) | |
7a65d170 EG |
1826 | { |
1827 | int ret; | |
cfb4e624 JB |
1828 | struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans); |
1829 | ||
1830 | spin_lock_irqsave(&trans_pcie->reg_lock, *flags); | |
7a65d170 | 1831 | |
fc8a350d | 1832 | if (trans_pcie->cmd_hold_nic_awake) |
b9439491 EG |
1833 | goto out; |
1834 | ||
7a65d170 | 1835 | /* this bit wakes up the NIC */ |
e139dc4a LE |
1836 | __iwl_trans_pcie_set_bit(trans, CSR_GP_CNTRL, |
1837 | CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ); | |
6e584873 | 1838 | if (trans->cfg->device_family >= IWL_DEVICE_FAMILY_8000) |
01e58a28 | 1839 | udelay(2); |
7a65d170 EG |
1840 | |
1841 | /* | |
1842 | * These bits say the device is running, and should keep running for | |
1843 | * at least a short while (at least as long as MAC_ACCESS_REQ stays 1), | |
1844 | * but they do not indicate that embedded SRAM is restored yet; | |
1845 | * 3945 and 4965 have volatile SRAM, and must save/restore contents | |
1846 | * to/from host DRAM when sleeping/waking for power-saving. | |
1847 | * Each direction takes approximately 1/4 millisecond; with this | |
1848 | * overhead, it's a good idea to grab and hold MAC_ACCESS_REQUEST if a | |
1849 | * series of register accesses are expected (e.g. reading Event Log), | |
1850 | * to keep device from sleeping. | |
1851 | * | |
1852 | * CSR_UCODE_DRV_GP1 register bit MAC_SLEEP == 0 indicates that | |
1853 | * SRAM is okay/restored. We don't check that here because this call | |
1854 | * is just for hardware register access; but GP1 MAC_SLEEP check is a | |
1855 | * good idea before accessing 3945/4965 SRAM (e.g. reading Event Log). | |
1856 | * | |
1857 | * 5000 series and later (including 1000 series) have non-volatile SRAM, | |
1858 | * and do not save/restore SRAM when power cycling. | |
1859 | */ | |
1860 | ret = iwl_poll_bit(trans, CSR_GP_CNTRL, | |
1861 | CSR_GP_CNTRL_REG_VAL_MAC_ACCESS_EN, | |
1862 | (CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY | | |
1863 | CSR_GP_CNTRL_REG_FLAG_GOING_TO_SLEEP), 15000); | |
1864 | if (unlikely(ret < 0)) { | |
1865 | iwl_write32(trans, CSR_RESET, CSR_RESET_REG_FLAG_FORCE_NMI); | |
23ba9340 EG |
1866 | WARN_ONCE(1, |
1867 | "Timeout waiting for hardware access (CSR_GP_CNTRL 0x%08x)\n", | |
1868 | iwl_read32(trans, CSR_GP_CNTRL)); | |
1869 | spin_unlock_irqrestore(&trans_pcie->reg_lock, *flags); | |
1870 | return false; | |
7a65d170 EG |
1871 | } |
1872 | ||
b9439491 | 1873 | out: |
e56b04ef LE |
1874 | /* |
1875 | * Fool sparse by faking we release the lock - sparse will | |
1876 | * track nic_access anyway. | |
1877 | */ | |
cfb4e624 | 1878 | __release(&trans_pcie->reg_lock); |
7a65d170 EG |
1879 | return true; |
1880 | } | |
1881 | ||
e56b04ef LE |
1882 | static void iwl_trans_pcie_release_nic_access(struct iwl_trans *trans, |
1883 | unsigned long *flags) | |
7a65d170 | 1884 | { |
cfb4e624 | 1885 | struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans); |
e56b04ef | 1886 | |
cfb4e624 | 1887 | lockdep_assert_held(&trans_pcie->reg_lock); |
e56b04ef LE |
1888 | |
1889 | /* | |
1890 | * Fool sparse by faking we acquiring the lock - sparse will | |
1891 | * track nic_access anyway. | |
1892 | */ | |
cfb4e624 | 1893 | __acquire(&trans_pcie->reg_lock); |
e56b04ef | 1894 | |
fc8a350d | 1895 | if (trans_pcie->cmd_hold_nic_awake) |
b9439491 EG |
1896 | goto out; |
1897 | ||
e139dc4a LE |
1898 | __iwl_trans_pcie_clear_bit(trans, CSR_GP_CNTRL, |
1899 | CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ); | |
7a65d170 EG |
1900 | /* |
1901 | * Above we read the CSR_GP_CNTRL register, which will flush | |
1902 | * any previous writes, but we need the write that clears the | |
1903 | * MAC_ACCESS_REQ bit to be performed before any other writes | |
1904 | * scheduled on different CPUs (after we drop reg_lock). | |
1905 | */ | |
1906 | mmiowb(); | |
b9439491 | 1907 | out: |
cfb4e624 | 1908 | spin_unlock_irqrestore(&trans_pcie->reg_lock, *flags); |
7a65d170 EG |
1909 | } |
1910 | ||
4fd442db EG |
1911 | static int iwl_trans_pcie_read_mem(struct iwl_trans *trans, u32 addr, |
1912 | void *buf, int dwords) | |
1913 | { | |
1914 | unsigned long flags; | |
1915 | int offs, ret = 0; | |
1916 | u32 *vals = buf; | |
1917 | ||
23ba9340 | 1918 | if (iwl_trans_grab_nic_access(trans, &flags)) { |
4fd442db EG |
1919 | iwl_write32(trans, HBUS_TARG_MEM_RADDR, addr); |
1920 | for (offs = 0; offs < dwords; offs++) | |
1921 | vals[offs] = iwl_read32(trans, HBUS_TARG_MEM_RDAT); | |
e56b04ef | 1922 | iwl_trans_release_nic_access(trans, &flags); |
4fd442db EG |
1923 | } else { |
1924 | ret = -EBUSY; | |
1925 | } | |
4fd442db EG |
1926 | return ret; |
1927 | } | |
1928 | ||
1929 | static int iwl_trans_pcie_write_mem(struct iwl_trans *trans, u32 addr, | |
bf0fd5da | 1930 | const void *buf, int dwords) |
4fd442db EG |
1931 | { |
1932 | unsigned long flags; | |
1933 | int offs, ret = 0; | |
bf0fd5da | 1934 | const u32 *vals = buf; |
4fd442db | 1935 | |
23ba9340 | 1936 | if (iwl_trans_grab_nic_access(trans, &flags)) { |
4fd442db EG |
1937 | iwl_write32(trans, HBUS_TARG_MEM_WADDR, addr); |
1938 | for (offs = 0; offs < dwords; offs++) | |
01387ffd EG |
1939 | iwl_write32(trans, HBUS_TARG_MEM_WDAT, |
1940 | vals ? vals[offs] : 0); | |
e56b04ef | 1941 | iwl_trans_release_nic_access(trans, &flags); |
4fd442db EG |
1942 | } else { |
1943 | ret = -EBUSY; | |
1944 | } | |
4fd442db EG |
1945 | return ret; |
1946 | } | |
7a65d170 | 1947 | |
e0b8d405 EG |
1948 | static void iwl_trans_pcie_freeze_txq_timer(struct iwl_trans *trans, |
1949 | unsigned long txqs, | |
1950 | bool freeze) | |
1951 | { | |
1952 | struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans); | |
1953 | int queue; | |
1954 | ||
1955 | for_each_set_bit(queue, &txqs, BITS_PER_LONG) { | |
b2a3b1c1 | 1956 | struct iwl_txq *txq = trans_pcie->txq[queue]; |
e0b8d405 EG |
1957 | unsigned long now; |
1958 | ||
1959 | spin_lock_bh(&txq->lock); | |
1960 | ||
1961 | now = jiffies; | |
1962 | ||
1963 | if (txq->frozen == freeze) | |
1964 | goto next_queue; | |
1965 | ||
1966 | IWL_DEBUG_TX_QUEUES(trans, "%s TXQ %d\n", | |
1967 | freeze ? "Freezing" : "Waking", queue); | |
1968 | ||
1969 | txq->frozen = freeze; | |
1970 | ||
bb98ecd4 | 1971 | if (txq->read_ptr == txq->write_ptr) |
e0b8d405 EG |
1972 | goto next_queue; |
1973 | ||
1974 | if (freeze) { | |
1975 | if (unlikely(time_after(now, | |
1976 | txq->stuck_timer.expires))) { | |
1977 | /* | |
1978 | * The timer should have fired, maybe it is | |
1979 | * spinning right now on the lock. | |
1980 | */ | |
1981 | goto next_queue; | |
1982 | } | |
1983 | /* remember how long until the timer fires */ | |
1984 | txq->frozen_expiry_remainder = | |
1985 | txq->stuck_timer.expires - now; | |
1986 | del_timer(&txq->stuck_timer); | |
1987 | goto next_queue; | |
1988 | } | |
1989 | ||
1990 | /* | |
1991 | * Wake a non-empty queue -> arm timer with the | |
1992 | * remainder before it froze | |
1993 | */ | |
1994 | mod_timer(&txq->stuck_timer, | |
1995 | now + txq->frozen_expiry_remainder); | |
1996 | ||
1997 | next_queue: | |
1998 | spin_unlock_bh(&txq->lock); | |
1999 | } | |
2000 | } | |
2001 | ||
0cd58eaa EG |
2002 | static void iwl_trans_pcie_block_txq_ptrs(struct iwl_trans *trans, bool block) |
2003 | { | |
2004 | struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans); | |
2005 | int i; | |
2006 | ||
2007 | for (i = 0; i < trans->cfg->base_params->num_of_queues; i++) { | |
b2a3b1c1 | 2008 | struct iwl_txq *txq = trans_pcie->txq[i]; |
0cd58eaa EG |
2009 | |
2010 | if (i == trans_pcie->cmd_queue) | |
2011 | continue; | |
2012 | ||
2013 | spin_lock_bh(&txq->lock); | |
2014 | ||
2015 | if (!block && !(WARN_ON_ONCE(!txq->block))) { | |
2016 | txq->block--; | |
2017 | if (!txq->block) { | |
2018 | iwl_write32(trans, HBUS_TARG_WRPTR, | |
bb98ecd4 | 2019 | txq->write_ptr | (i << 8)); |
0cd58eaa EG |
2020 | } |
2021 | } else if (block) { | |
2022 | txq->block++; | |
2023 | } | |
2024 | ||
2025 | spin_unlock_bh(&txq->lock); | |
2026 | } | |
2027 | } | |
2028 | ||
5f178cd2 EG |
2029 | #define IWL_FLUSH_WAIT_MS 2000 |
2030 | ||
38398efb SS |
2031 | void iwl_trans_pcie_log_scd_error(struct iwl_trans *trans, struct iwl_txq *txq) |
2032 | { | |
afb84431 EG |
2033 | u32 txq_id = txq->id; |
2034 | u32 status; | |
2035 | bool active; | |
2036 | u8 fifo; | |
38398efb | 2037 | |
afb84431 EG |
2038 | if (trans->cfg->use_tfh) { |
2039 | IWL_ERR(trans, "Queue %d is stuck %d %d\n", txq_id, | |
2040 | txq->read_ptr, txq->write_ptr); | |
ae79785f SS |
2041 | /* TODO: access new SCD registers and dump them */ |
2042 | return; | |
38398efb | 2043 | } |
afb84431 EG |
2044 | |
2045 | status = iwl_read_prph(trans, SCD_QUEUE_STATUS_BITS(txq_id)); | |
2046 | fifo = (status >> SCD_QUEUE_STTS_REG_POS_TXF) & 0x7; | |
2047 | active = !!(status & BIT(SCD_QUEUE_STTS_REG_POS_ACTIVE)); | |
2048 | ||
2049 | IWL_ERR(trans, | |
2050 | "Queue %d is %sactive on fifo %d and stuck for %u ms. SW [%d, %d] HW [%d, %d] FH TRB=0x0%x\n", | |
2051 | txq_id, active ? "" : "in", fifo, | |
2052 | jiffies_to_msecs(txq->wd_timeout), | |
2053 | txq->read_ptr, txq->write_ptr, | |
2054 | iwl_read_prph(trans, SCD_QUEUE_RDPTR(txq_id)) & | |
2055 | (TFD_QUEUE_SIZE_MAX - 1), | |
2056 | iwl_read_prph(trans, SCD_QUEUE_WRPTR(txq_id)) & | |
2057 | (TFD_QUEUE_SIZE_MAX - 1), | |
2058 | iwl_read_direct32(trans, FH_TX_TRB_REG(fifo))); | |
38398efb SS |
2059 | } |
2060 | ||
d6d517b7 | 2061 | static int iwl_trans_pcie_wait_txq_empty(struct iwl_trans *trans, int txq_idx) |
5f178cd2 | 2062 | { |
8ad71bef | 2063 | struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans); |
990aa6d7 | 2064 | struct iwl_txq *txq; |
5f178cd2 | 2065 | unsigned long now = jiffies; |
d6d517b7 SS |
2066 | u8 wr_ptr; |
2067 | ||
2068 | if (!test_bit(txq_idx, trans_pcie->queue_used)) | |
2069 | return -EINVAL; | |
2070 | ||
2071 | IWL_DEBUG_TX_QUEUES(trans, "Emptying queue %d...\n", txq_idx); | |
2072 | txq = trans_pcie->txq[txq_idx]; | |
2073 | wr_ptr = ACCESS_ONCE(txq->write_ptr); | |
2074 | ||
2075 | while (txq->read_ptr != ACCESS_ONCE(txq->write_ptr) && | |
2076 | !time_after(jiffies, | |
2077 | now + msecs_to_jiffies(IWL_FLUSH_WAIT_MS))) { | |
2078 | u8 write_ptr = ACCESS_ONCE(txq->write_ptr); | |
2079 | ||
2080 | if (WARN_ONCE(wr_ptr != write_ptr, | |
2081 | "WR pointer moved while flushing %d -> %d\n", | |
2082 | wr_ptr, write_ptr)) | |
2083 | return -ETIMEDOUT; | |
2084 | usleep_range(1000, 2000); | |
2085 | } | |
2086 | ||
2087 | if (txq->read_ptr != txq->write_ptr) { | |
2088 | IWL_ERR(trans, | |
2089 | "fail to flush all tx fifo queues Q %d\n", txq_idx); | |
2090 | iwl_trans_pcie_log_scd_error(trans, txq); | |
2091 | return -ETIMEDOUT; | |
2092 | } | |
2093 | ||
2094 | IWL_DEBUG_TX_QUEUES(trans, "Queue %d is now empty.\n", txq_idx); | |
2095 | ||
2096 | return 0; | |
2097 | } | |
2098 | ||
2099 | static int iwl_trans_pcie_wait_txqs_empty(struct iwl_trans *trans, u32 txq_bm) | |
2100 | { | |
2101 | struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans); | |
2102 | int cnt; | |
5f178cd2 EG |
2103 | int ret = 0; |
2104 | ||
2105 | /* waiting for all the tx frames complete might take a while */ | |
035f7ff2 | 2106 | for (cnt = 0; cnt < trans->cfg->base_params->num_of_queues; cnt++) { |
fa1a91fd | 2107 | |
9ba1947a | 2108 | if (cnt == trans_pcie->cmd_queue) |
5f178cd2 | 2109 | continue; |
3cafdbe6 EG |
2110 | if (!test_bit(cnt, trans_pcie->queue_used)) |
2111 | continue; | |
2112 | if (!(BIT(cnt) & txq_bm)) | |
2113 | continue; | |
748fa67c | 2114 | |
d6d517b7 SS |
2115 | ret = iwl_trans_pcie_wait_txq_empty(trans, cnt); |
2116 | if (ret) | |
5f178cd2 | 2117 | break; |
5f178cd2 | 2118 | } |
1c3fea82 | 2119 | |
5f178cd2 EG |
2120 | return ret; |
2121 | } | |
2122 | ||
e139dc4a LE |
2123 | static void iwl_trans_pcie_set_bits_mask(struct iwl_trans *trans, u32 reg, |
2124 | u32 mask, u32 value) | |
2125 | { | |
e56b04ef | 2126 | struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans); |
e139dc4a LE |
2127 | unsigned long flags; |
2128 | ||
e56b04ef | 2129 | spin_lock_irqsave(&trans_pcie->reg_lock, flags); |
e139dc4a | 2130 | __iwl_trans_pcie_set_bits_mask(trans, reg, mask, value); |
e56b04ef | 2131 | spin_unlock_irqrestore(&trans_pcie->reg_lock, flags); |
e139dc4a LE |
2132 | } |
2133 | ||
c24c7f58 | 2134 | static void iwl_trans_pcie_ref(struct iwl_trans *trans) |
7616f334 EP |
2135 | { |
2136 | struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans); | |
7616f334 EP |
2137 | |
2138 | if (iwlwifi_mod_params.d0i3_disable) | |
2139 | return; | |
2140 | ||
b3ff1270 | 2141 | pm_runtime_get(&trans_pcie->pci_dev->dev); |
5d93f3a2 LC |
2142 | |
2143 | #ifdef CONFIG_PM | |
2144 | IWL_DEBUG_RPM(trans, "runtime usage count: %d\n", | |
2145 | atomic_read(&trans_pcie->pci_dev->dev.power.usage_count)); | |
2146 | #endif /* CONFIG_PM */ | |
7616f334 EP |
2147 | } |
2148 | ||
c24c7f58 | 2149 | static void iwl_trans_pcie_unref(struct iwl_trans *trans) |
7616f334 EP |
2150 | { |
2151 | struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans); | |
7616f334 EP |
2152 | |
2153 | if (iwlwifi_mod_params.d0i3_disable) | |
2154 | return; | |
2155 | ||
b3ff1270 LC |
2156 | pm_runtime_mark_last_busy(&trans_pcie->pci_dev->dev); |
2157 | pm_runtime_put_autosuspend(&trans_pcie->pci_dev->dev); | |
b3ff1270 | 2158 | |
5d93f3a2 LC |
2159 | #ifdef CONFIG_PM |
2160 | IWL_DEBUG_RPM(trans, "runtime usage count: %d\n", | |
2161 | atomic_read(&trans_pcie->pci_dev->dev.power.usage_count)); | |
2162 | #endif /* CONFIG_PM */ | |
7616f334 EP |
2163 | } |
2164 | ||
ff620849 EG |
2165 | static const char *get_csr_string(int cmd) |
2166 | { | |
d9fb6465 | 2167 | #define IWL_CMD(x) case x: return #x |
ff620849 EG |
2168 | switch (cmd) { |
2169 | IWL_CMD(CSR_HW_IF_CONFIG_REG); | |
2170 | IWL_CMD(CSR_INT_COALESCING); | |
2171 | IWL_CMD(CSR_INT); | |
2172 | IWL_CMD(CSR_INT_MASK); | |
2173 | IWL_CMD(CSR_FH_INT_STATUS); | |
2174 | IWL_CMD(CSR_GPIO_IN); | |
2175 | IWL_CMD(CSR_RESET); | |
2176 | IWL_CMD(CSR_GP_CNTRL); | |
2177 | IWL_CMD(CSR_HW_REV); | |
2178 | IWL_CMD(CSR_EEPROM_REG); | |
2179 | IWL_CMD(CSR_EEPROM_GP); | |
2180 | IWL_CMD(CSR_OTP_GP_REG); | |
2181 | IWL_CMD(CSR_GIO_REG); | |
2182 | IWL_CMD(CSR_GP_UCODE_REG); | |
2183 | IWL_CMD(CSR_GP_DRIVER_REG); | |
2184 | IWL_CMD(CSR_UCODE_DRV_GP1); | |
2185 | IWL_CMD(CSR_UCODE_DRV_GP2); | |
2186 | IWL_CMD(CSR_LED_REG); | |
2187 | IWL_CMD(CSR_DRAM_INT_TBL_REG); | |
2188 | IWL_CMD(CSR_GIO_CHICKEN_BITS); | |
2189 | IWL_CMD(CSR_ANA_PLL_CFG); | |
2190 | IWL_CMD(CSR_HW_REV_WA_REG); | |
a812cba9 | 2191 | IWL_CMD(CSR_MONITOR_STATUS_REG); |
ff620849 EG |
2192 | IWL_CMD(CSR_DBG_HPET_MEM_REG); |
2193 | default: | |
2194 | return "UNKNOWN"; | |
2195 | } | |
d9fb6465 | 2196 | #undef IWL_CMD |
ff620849 EG |
2197 | } |
2198 | ||
990aa6d7 | 2199 | void iwl_pcie_dump_csr(struct iwl_trans *trans) |
ff620849 EG |
2200 | { |
2201 | int i; | |
2202 | static const u32 csr_tbl[] = { | |
2203 | CSR_HW_IF_CONFIG_REG, | |
2204 | CSR_INT_COALESCING, | |
2205 | CSR_INT, | |
2206 | CSR_INT_MASK, | |
2207 | CSR_FH_INT_STATUS, | |
2208 | CSR_GPIO_IN, | |
2209 | CSR_RESET, | |
2210 | CSR_GP_CNTRL, | |
2211 | CSR_HW_REV, | |
2212 | CSR_EEPROM_REG, | |
2213 | CSR_EEPROM_GP, | |
2214 | CSR_OTP_GP_REG, | |
2215 | CSR_GIO_REG, | |
2216 | CSR_GP_UCODE_REG, | |
2217 | CSR_GP_DRIVER_REG, | |
2218 | CSR_UCODE_DRV_GP1, | |
2219 | CSR_UCODE_DRV_GP2, | |
2220 | CSR_LED_REG, | |
2221 | CSR_DRAM_INT_TBL_REG, | |
2222 | CSR_GIO_CHICKEN_BITS, | |
2223 | CSR_ANA_PLL_CFG, | |
a812cba9 | 2224 | CSR_MONITOR_STATUS_REG, |
ff620849 EG |
2225 | CSR_HW_REV_WA_REG, |
2226 | CSR_DBG_HPET_MEM_REG | |
2227 | }; | |
2228 | IWL_ERR(trans, "CSR values:\n"); | |
2229 | IWL_ERR(trans, "(2nd byte of CSR_INT_COALESCING is " | |
2230 | "CSR_INT_PERIODIC_REG)\n"); | |
2231 | for (i = 0; i < ARRAY_SIZE(csr_tbl); i++) { | |
2232 | IWL_ERR(trans, " %25s: 0X%08x\n", | |
2233 | get_csr_string(csr_tbl[i]), | |
1042db2a | 2234 | iwl_read32(trans, csr_tbl[i])); |
ff620849 EG |
2235 | } |
2236 | } | |
2237 | ||
87e5666c EG |
2238 | #ifdef CONFIG_IWLWIFI_DEBUGFS |
2239 | /* create and remove of files */ | |
2240 | #define DEBUGFS_ADD_FILE(name, parent, mode) do { \ | |
5a878bf6 | 2241 | if (!debugfs_create_file(#name, mode, parent, trans, \ |
87e5666c | 2242 | &iwl_dbgfs_##name##_ops)) \ |
9da987ac | 2243 | goto err; \ |
87e5666c EG |
2244 | } while (0) |
2245 | ||
2246 | /* file operation */ | |
87e5666c | 2247 | #define DEBUGFS_READ_FILE_OPS(name) \ |
87e5666c EG |
2248 | static const struct file_operations iwl_dbgfs_##name##_ops = { \ |
2249 | .read = iwl_dbgfs_##name##_read, \ | |
234e3405 | 2250 | .open = simple_open, \ |
87e5666c EG |
2251 | .llseek = generic_file_llseek, \ |
2252 | }; | |
2253 | ||
16db88ba | 2254 | #define DEBUGFS_WRITE_FILE_OPS(name) \ |
16db88ba EG |
2255 | static const struct file_operations iwl_dbgfs_##name##_ops = { \ |
2256 | .write = iwl_dbgfs_##name##_write, \ | |
234e3405 | 2257 | .open = simple_open, \ |
16db88ba EG |
2258 | .llseek = generic_file_llseek, \ |
2259 | }; | |
2260 | ||
87e5666c | 2261 | #define DEBUGFS_READ_WRITE_FILE_OPS(name) \ |
87e5666c EG |
2262 | static const struct file_operations iwl_dbgfs_##name##_ops = { \ |
2263 | .write = iwl_dbgfs_##name##_write, \ | |
2264 | .read = iwl_dbgfs_##name##_read, \ | |
234e3405 | 2265 | .open = simple_open, \ |
87e5666c EG |
2266 | .llseek = generic_file_llseek, \ |
2267 | }; | |
2268 | ||
87e5666c | 2269 | static ssize_t iwl_dbgfs_tx_queue_read(struct file *file, |
20d3b647 JB |
2270 | char __user *user_buf, |
2271 | size_t count, loff_t *ppos) | |
8ad71bef | 2272 | { |
5a878bf6 | 2273 | struct iwl_trans *trans = file->private_data; |
8ad71bef | 2274 | struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans); |
990aa6d7 | 2275 | struct iwl_txq *txq; |
87e5666c EG |
2276 | char *buf; |
2277 | int pos = 0; | |
2278 | int cnt; | |
2279 | int ret; | |
1745e440 WYG |
2280 | size_t bufsz; |
2281 | ||
e0b8d405 | 2282 | bufsz = sizeof(char) * 75 * trans->cfg->base_params->num_of_queues; |
87e5666c | 2283 | |
b2a3b1c1 | 2284 | if (!trans_pcie->txq_memory) |
87e5666c | 2285 | return -EAGAIN; |
f9e75447 | 2286 | |
87e5666c EG |
2287 | buf = kzalloc(bufsz, GFP_KERNEL); |
2288 | if (!buf) | |
2289 | return -ENOMEM; | |
2290 | ||
035f7ff2 | 2291 | for (cnt = 0; cnt < trans->cfg->base_params->num_of_queues; cnt++) { |
b2a3b1c1 | 2292 | txq = trans_pcie->txq[cnt]; |
87e5666c | 2293 | pos += scnprintf(buf + pos, bufsz - pos, |
e0b8d405 | 2294 | "hwq %.2d: read=%u write=%u use=%d stop=%d need_update=%d frozen=%d%s\n", |
bb98ecd4 | 2295 | cnt, txq->read_ptr, txq->write_ptr, |
9eae88fa | 2296 | !!test_bit(cnt, trans_pcie->queue_used), |
f40faf62 | 2297 | !!test_bit(cnt, trans_pcie->queue_stopped), |
e0b8d405 | 2298 | txq->need_update, txq->frozen, |
f40faf62 | 2299 | (cnt == trans_pcie->cmd_queue ? " HCMD" : "")); |
87e5666c EG |
2300 | } |
2301 | ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos); | |
2302 | kfree(buf); | |
2303 | return ret; | |
2304 | } | |
2305 | ||
2306 | static ssize_t iwl_dbgfs_rx_queue_read(struct file *file, | |
20d3b647 JB |
2307 | char __user *user_buf, |
2308 | size_t count, loff_t *ppos) | |
2309 | { | |
5a878bf6 | 2310 | struct iwl_trans *trans = file->private_data; |
20d3b647 | 2311 | struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans); |
78485054 SS |
2312 | char *buf; |
2313 | int pos = 0, i, ret; | |
2314 | size_t bufsz = sizeof(buf); | |
2315 | ||
2316 | bufsz = sizeof(char) * 121 * trans->num_rx_queues; | |
2317 | ||
2318 | if (!trans_pcie->rxq) | |
2319 | return -EAGAIN; | |
2320 | ||
2321 | buf = kzalloc(bufsz, GFP_KERNEL); | |
2322 | if (!buf) | |
2323 | return -ENOMEM; | |
2324 | ||
2325 | for (i = 0; i < trans->num_rx_queues && pos < bufsz; i++) { | |
2326 | struct iwl_rxq *rxq = &trans_pcie->rxq[i]; | |
2327 | ||
2328 | pos += scnprintf(buf + pos, bufsz - pos, "queue#: %2d\n", | |
2329 | i); | |
2330 | pos += scnprintf(buf + pos, bufsz - pos, "\tread: %u\n", | |
2331 | rxq->read); | |
2332 | pos += scnprintf(buf + pos, bufsz - pos, "\twrite: %u\n", | |
2333 | rxq->write); | |
2334 | pos += scnprintf(buf + pos, bufsz - pos, "\twrite_actual: %u\n", | |
2335 | rxq->write_actual); | |
2336 | pos += scnprintf(buf + pos, bufsz - pos, "\tneed_update: %2d\n", | |
2337 | rxq->need_update); | |
2338 | pos += scnprintf(buf + pos, bufsz - pos, "\tfree_count: %u\n", | |
2339 | rxq->free_count); | |
2340 | if (rxq->rb_stts) { | |
2341 | pos += scnprintf(buf + pos, bufsz - pos, | |
2342 | "\tclosed_rb_num: %u\n", | |
2343 | le16_to_cpu(rxq->rb_stts->closed_rb_num) & | |
2344 | 0x0FFF); | |
2345 | } else { | |
2346 | pos += scnprintf(buf + pos, bufsz - pos, | |
2347 | "\tclosed_rb_num: Not Allocated\n"); | |
60c0a88f | 2348 | } |
87e5666c | 2349 | } |
78485054 SS |
2350 | ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos); |
2351 | kfree(buf); | |
2352 | ||
2353 | return ret; | |
87e5666c EG |
2354 | } |
2355 | ||
1f7b6172 EG |
2356 | static ssize_t iwl_dbgfs_interrupt_read(struct file *file, |
2357 | char __user *user_buf, | |
20d3b647 JB |
2358 | size_t count, loff_t *ppos) |
2359 | { | |
1f7b6172 | 2360 | struct iwl_trans *trans = file->private_data; |
20d3b647 | 2361 | struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans); |
1f7b6172 EG |
2362 | struct isr_statistics *isr_stats = &trans_pcie->isr_stats; |
2363 | ||
2364 | int pos = 0; | |
2365 | char *buf; | |
2366 | int bufsz = 24 * 64; /* 24 items * 64 char per item */ | |
2367 | ssize_t ret; | |
2368 | ||
2369 | buf = kzalloc(bufsz, GFP_KERNEL); | |
f9e75447 | 2370 | if (!buf) |
1f7b6172 | 2371 | return -ENOMEM; |
1f7b6172 EG |
2372 | |
2373 | pos += scnprintf(buf + pos, bufsz - pos, | |
2374 | "Interrupt Statistics Report:\n"); | |
2375 | ||
2376 | pos += scnprintf(buf + pos, bufsz - pos, "HW Error:\t\t\t %u\n", | |
2377 | isr_stats->hw); | |
2378 | pos += scnprintf(buf + pos, bufsz - pos, "SW Error:\t\t\t %u\n", | |
2379 | isr_stats->sw); | |
2380 | if (isr_stats->sw || isr_stats->hw) { | |
2381 | pos += scnprintf(buf + pos, bufsz - pos, | |
2382 | "\tLast Restarting Code: 0x%X\n", | |
2383 | isr_stats->err_code); | |
2384 | } | |
2385 | #ifdef CONFIG_IWLWIFI_DEBUG | |
2386 | pos += scnprintf(buf + pos, bufsz - pos, "Frame transmitted:\t\t %u\n", | |
2387 | isr_stats->sch); | |
2388 | pos += scnprintf(buf + pos, bufsz - pos, "Alive interrupt:\t\t %u\n", | |
2389 | isr_stats->alive); | |
2390 | #endif | |
2391 | pos += scnprintf(buf + pos, bufsz - pos, | |
2392 | "HW RF KILL switch toggled:\t %u\n", isr_stats->rfkill); | |
2393 | ||
2394 | pos += scnprintf(buf + pos, bufsz - pos, "CT KILL:\t\t\t %u\n", | |
2395 | isr_stats->ctkill); | |
2396 | ||
2397 | pos += scnprintf(buf + pos, bufsz - pos, "Wakeup Interrupt:\t\t %u\n", | |
2398 | isr_stats->wakeup); | |
2399 | ||
2400 | pos += scnprintf(buf + pos, bufsz - pos, | |
2401 | "Rx command responses:\t\t %u\n", isr_stats->rx); | |
2402 | ||
2403 | pos += scnprintf(buf + pos, bufsz - pos, "Tx/FH interrupt:\t\t %u\n", | |
2404 | isr_stats->tx); | |
2405 | ||
2406 | pos += scnprintf(buf + pos, bufsz - pos, "Unexpected INTA:\t\t %u\n", | |
2407 | isr_stats->unhandled); | |
2408 | ||
2409 | ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos); | |
2410 | kfree(buf); | |
2411 | return ret; | |
2412 | } | |
2413 | ||
2414 | static ssize_t iwl_dbgfs_interrupt_write(struct file *file, | |
2415 | const char __user *user_buf, | |
2416 | size_t count, loff_t *ppos) | |
2417 | { | |
2418 | struct iwl_trans *trans = file->private_data; | |
20d3b647 | 2419 | struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans); |
1f7b6172 | 2420 | struct isr_statistics *isr_stats = &trans_pcie->isr_stats; |
1f7b6172 | 2421 | u32 reset_flag; |
078f1131 | 2422 | int ret; |
1f7b6172 | 2423 | |
078f1131 JB |
2424 | ret = kstrtou32_from_user(user_buf, count, 16, &reset_flag); |
2425 | if (ret) | |
2426 | return ret; | |
1f7b6172 EG |
2427 | if (reset_flag == 0) |
2428 | memset(isr_stats, 0, sizeof(*isr_stats)); | |
2429 | ||
2430 | return count; | |
2431 | } | |
2432 | ||
16db88ba | 2433 | static ssize_t iwl_dbgfs_csr_write(struct file *file, |
20d3b647 JB |
2434 | const char __user *user_buf, |
2435 | size_t count, loff_t *ppos) | |
16db88ba EG |
2436 | { |
2437 | struct iwl_trans *trans = file->private_data; | |
16db88ba | 2438 | |
990aa6d7 | 2439 | iwl_pcie_dump_csr(trans); |
16db88ba EG |
2440 | |
2441 | return count; | |
2442 | } | |
2443 | ||
16db88ba | 2444 | static ssize_t iwl_dbgfs_fh_reg_read(struct file *file, |
20d3b647 JB |
2445 | char __user *user_buf, |
2446 | size_t count, loff_t *ppos) | |
16db88ba EG |
2447 | { |
2448 | struct iwl_trans *trans = file->private_data; | |
94543a8d | 2449 | char *buf = NULL; |
56c2477f | 2450 | ssize_t ret; |
16db88ba | 2451 | |
56c2477f JB |
2452 | ret = iwl_dump_fh(trans, &buf); |
2453 | if (ret < 0) | |
2454 | return ret; | |
2455 | if (!buf) | |
2456 | return -EINVAL; | |
2457 | ret = simple_read_from_buffer(user_buf, count, ppos, buf, ret); | |
2458 | kfree(buf); | |
16db88ba EG |
2459 | return ret; |
2460 | } | |
2461 | ||
fa4de7f7 JB |
2462 | static ssize_t iwl_dbgfs_rfkill_read(struct file *file, |
2463 | char __user *user_buf, | |
2464 | size_t count, loff_t *ppos) | |
2465 | { | |
2466 | struct iwl_trans *trans = file->private_data; | |
2467 | struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans); | |
2468 | char buf[100]; | |
2469 | int pos; | |
2470 | ||
2471 | pos = scnprintf(buf, sizeof(buf), "debug: %d\nhw: %d\n", | |
2472 | trans_pcie->debug_rfkill, | |
2473 | !(iwl_read32(trans, CSR_GP_CNTRL) & | |
2474 | CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)); | |
2475 | ||
2476 | return simple_read_from_buffer(user_buf, count, ppos, buf, pos); | |
2477 | } | |
2478 | ||
2479 | static ssize_t iwl_dbgfs_rfkill_write(struct file *file, | |
2480 | const char __user *user_buf, | |
2481 | size_t count, loff_t *ppos) | |
2482 | { | |
2483 | struct iwl_trans *trans = file->private_data; | |
2484 | struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans); | |
2485 | bool old = trans_pcie->debug_rfkill; | |
2486 | int ret; | |
2487 | ||
2488 | ret = kstrtobool_from_user(user_buf, count, &trans_pcie->debug_rfkill); | |
2489 | if (ret) | |
2490 | return ret; | |
2491 | if (old == trans_pcie->debug_rfkill) | |
2492 | return count; | |
2493 | IWL_WARN(trans, "changing debug rfkill %d->%d\n", | |
2494 | old, trans_pcie->debug_rfkill); | |
2495 | iwl_pcie_handle_rfkill_irq(trans); | |
2496 | ||
2497 | return count; | |
2498 | } | |
2499 | ||
1f7b6172 | 2500 | DEBUGFS_READ_WRITE_FILE_OPS(interrupt); |
16db88ba | 2501 | DEBUGFS_READ_FILE_OPS(fh_reg); |
87e5666c EG |
2502 | DEBUGFS_READ_FILE_OPS(rx_queue); |
2503 | DEBUGFS_READ_FILE_OPS(tx_queue); | |
16db88ba | 2504 | DEBUGFS_WRITE_FILE_OPS(csr); |
fa4de7f7 | 2505 | DEBUGFS_READ_WRITE_FILE_OPS(rfkill); |
87e5666c | 2506 | |
f8a1edb7 JB |
2507 | /* Create the debugfs files and directories */ |
2508 | int iwl_trans_pcie_dbgfs_register(struct iwl_trans *trans) | |
87e5666c | 2509 | { |
f8a1edb7 JB |
2510 | struct dentry *dir = trans->dbgfs_dir; |
2511 | ||
87e5666c EG |
2512 | DEBUGFS_ADD_FILE(rx_queue, dir, S_IRUSR); |
2513 | DEBUGFS_ADD_FILE(tx_queue, dir, S_IRUSR); | |
1f7b6172 | 2514 | DEBUGFS_ADD_FILE(interrupt, dir, S_IWUSR | S_IRUSR); |
16db88ba EG |
2515 | DEBUGFS_ADD_FILE(csr, dir, S_IWUSR); |
2516 | DEBUGFS_ADD_FILE(fh_reg, dir, S_IRUSR); | |
fa4de7f7 | 2517 | DEBUGFS_ADD_FILE(rfkill, dir, S_IWUSR | S_IRUSR); |
87e5666c | 2518 | return 0; |
9da987ac MV |
2519 | |
2520 | err: | |
2521 | IWL_ERR(trans, "failed to create the trans debugfs entry\n"); | |
2522 | return -ENOMEM; | |
87e5666c | 2523 | } |
aadede6e | 2524 | #endif /*CONFIG_IWLWIFI_DEBUGFS */ |
4d075007 | 2525 | |
6983ba69 | 2526 | static u32 iwl_trans_pcie_get_cmdlen(struct iwl_trans *trans, void *tfd) |
4d075007 | 2527 | { |
3cd1980b | 2528 | struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans); |
4d075007 JB |
2529 | u32 cmdlen = 0; |
2530 | int i; | |
2531 | ||
3cd1980b | 2532 | for (i = 0; i < trans_pcie->max_tbs; i++) |
6983ba69 | 2533 | cmdlen += iwl_pcie_tfd_tb_get_len(trans, tfd, i); |
4d075007 JB |
2534 | |
2535 | return cmdlen; | |
2536 | } | |
2537 | ||
bd7fc617 EG |
2538 | static u32 iwl_trans_pcie_dump_rbs(struct iwl_trans *trans, |
2539 | struct iwl_fw_error_dump_data **data, | |
2540 | int allocated_rb_nums) | |
2541 | { | |
2542 | struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans); | |
2543 | int max_len = PAGE_SIZE << trans_pcie->rx_page_order; | |
78485054 SS |
2544 | /* Dump RBs is supported only for pre-9000 devices (1 queue) */ |
2545 | struct iwl_rxq *rxq = &trans_pcie->rxq[0]; | |
bd7fc617 EG |
2546 | u32 i, r, j, rb_len = 0; |
2547 | ||
2548 | spin_lock(&rxq->lock); | |
2549 | ||
2550 | r = le16_to_cpu(ACCESS_ONCE(rxq->rb_stts->closed_rb_num)) & 0x0FFF; | |
2551 | ||
2552 | for (i = rxq->read, j = 0; | |
2553 | i != r && j < allocated_rb_nums; | |
2554 | i = (i + 1) & RX_QUEUE_MASK, j++) { | |
2555 | struct iwl_rx_mem_buffer *rxb = rxq->queue[i]; | |
2556 | struct iwl_fw_error_dump_rb *rb; | |
2557 | ||
2558 | dma_unmap_page(trans->dev, rxb->page_dma, max_len, | |
2559 | DMA_FROM_DEVICE); | |
2560 | ||
2561 | rb_len += sizeof(**data) + sizeof(*rb) + max_len; | |
2562 | ||
2563 | (*data)->type = cpu_to_le32(IWL_FW_ERROR_DUMP_RB); | |
2564 | (*data)->len = cpu_to_le32(sizeof(*rb) + max_len); | |
2565 | rb = (void *)(*data)->data; | |
2566 | rb->index = cpu_to_le32(i); | |
2567 | memcpy(rb->data, page_address(rxb->page), max_len); | |
2568 | /* remap the page for the free benefit */ | |
2569 | rxb->page_dma = dma_map_page(trans->dev, rxb->page, 0, | |
2570 | max_len, | |
2571 | DMA_FROM_DEVICE); | |
2572 | ||
2573 | *data = iwl_fw_error_next_data(*data); | |
2574 | } | |
2575 | ||
2576 | spin_unlock(&rxq->lock); | |
2577 | ||
2578 | return rb_len; | |
2579 | } | |
473ad712 EG |
2580 | #define IWL_CSR_TO_DUMP (0x250) |
2581 | ||
2582 | static u32 iwl_trans_pcie_dump_csr(struct iwl_trans *trans, | |
2583 | struct iwl_fw_error_dump_data **data) | |
2584 | { | |
2585 | u32 csr_len = sizeof(**data) + IWL_CSR_TO_DUMP; | |
2586 | __le32 *val; | |
2587 | int i; | |
2588 | ||
2589 | (*data)->type = cpu_to_le32(IWL_FW_ERROR_DUMP_CSR); | |
2590 | (*data)->len = cpu_to_le32(IWL_CSR_TO_DUMP); | |
2591 | val = (void *)(*data)->data; | |
2592 | ||
2593 | for (i = 0; i < IWL_CSR_TO_DUMP; i += 4) | |
2594 | *val++ = cpu_to_le32(iwl_trans_pcie_read32(trans, i)); | |
2595 | ||
2596 | *data = iwl_fw_error_next_data(*data); | |
2597 | ||
2598 | return csr_len; | |
2599 | } | |
2600 | ||
06d51e0d LK |
2601 | static u32 iwl_trans_pcie_fh_regs_dump(struct iwl_trans *trans, |
2602 | struct iwl_fw_error_dump_data **data) | |
2603 | { | |
2604 | u32 fh_regs_len = FH_MEM_UPPER_BOUND - FH_MEM_LOWER_BOUND; | |
2605 | unsigned long flags; | |
2606 | __le32 *val; | |
2607 | int i; | |
2608 | ||
23ba9340 | 2609 | if (!iwl_trans_grab_nic_access(trans, &flags)) |
06d51e0d LK |
2610 | return 0; |
2611 | ||
2612 | (*data)->type = cpu_to_le32(IWL_FW_ERROR_DUMP_FH_REGS); | |
2613 | (*data)->len = cpu_to_le32(fh_regs_len); | |
2614 | val = (void *)(*data)->data; | |
2615 | ||
723b45e2 LK |
2616 | if (!trans->cfg->gen2) |
2617 | for (i = FH_MEM_LOWER_BOUND; i < FH_MEM_UPPER_BOUND; | |
2618 | i += sizeof(u32)) | |
2619 | *val++ = cpu_to_le32(iwl_trans_pcie_read32(trans, i)); | |
2620 | else | |
2621 | for (i = FH_MEM_LOWER_BOUND_GEN2; i < FH_MEM_UPPER_BOUND_GEN2; | |
2622 | i += sizeof(u32)) | |
2623 | *val++ = cpu_to_le32(iwl_trans_pcie_read_prph(trans, | |
2624 | i)); | |
06d51e0d LK |
2625 | |
2626 | iwl_trans_release_nic_access(trans, &flags); | |
2627 | ||
2628 | *data = iwl_fw_error_next_data(*data); | |
2629 | ||
2630 | return sizeof(**data) + fh_regs_len; | |
2631 | } | |
2632 | ||
cc79ef66 LK |
2633 | static u32 |
2634 | iwl_trans_pci_dump_marbh_monitor(struct iwl_trans *trans, | |
2635 | struct iwl_fw_error_dump_fw_mon *fw_mon_data, | |
2636 | u32 monitor_len) | |
2637 | { | |
2638 | u32 buf_size_in_dwords = (monitor_len >> 2); | |
2639 | u32 *buffer = (u32 *)fw_mon_data->data; | |
2640 | unsigned long flags; | |
2641 | u32 i; | |
2642 | ||
23ba9340 | 2643 | if (!iwl_trans_grab_nic_access(trans, &flags)) |
cc79ef66 LK |
2644 | return 0; |
2645 | ||
14ef1b43 | 2646 | iwl_write_prph_no_grab(trans, MON_DMARB_RD_CTL_ADDR, 0x1); |
cc79ef66 | 2647 | for (i = 0; i < buf_size_in_dwords; i++) |
14ef1b43 GBA |
2648 | buffer[i] = iwl_read_prph_no_grab(trans, |
2649 | MON_DMARB_RD_DATA_ADDR); | |
2650 | iwl_write_prph_no_grab(trans, MON_DMARB_RD_CTL_ADDR, 0x0); | |
cc79ef66 LK |
2651 | |
2652 | iwl_trans_release_nic_access(trans, &flags); | |
2653 | ||
2654 | return monitor_len; | |
2655 | } | |
2656 | ||
36fb9017 OG |
2657 | static u32 |
2658 | iwl_trans_pcie_dump_monitor(struct iwl_trans *trans, | |
2659 | struct iwl_fw_error_dump_data **data, | |
2660 | u32 monitor_len) | |
2661 | { | |
2662 | struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans); | |
2663 | u32 len = 0; | |
2664 | ||
2665 | if ((trans_pcie->fw_mon_page && | |
2666 | trans->cfg->device_family == IWL_DEVICE_FAMILY_7000) || | |
2667 | trans->dbg_dest_tlv) { | |
2668 | struct iwl_fw_error_dump_fw_mon *fw_mon_data; | |
2669 | u32 base, write_ptr, wrap_cnt; | |
2670 | ||
2671 | /* If there was a dest TLV - use the values from there */ | |
2672 | if (trans->dbg_dest_tlv) { | |
2673 | write_ptr = | |
2674 | le32_to_cpu(trans->dbg_dest_tlv->write_ptr_reg); | |
2675 | wrap_cnt = le32_to_cpu(trans->dbg_dest_tlv->wrap_count); | |
2676 | base = le32_to_cpu(trans->dbg_dest_tlv->base_reg); | |
2677 | } else { | |
2678 | base = MON_BUFF_BASE_ADDR; | |
2679 | write_ptr = MON_BUFF_WRPTR; | |
2680 | wrap_cnt = MON_BUFF_CYCLE_CNT; | |
2681 | } | |
2682 | ||
2683 | (*data)->type = cpu_to_le32(IWL_FW_ERROR_DUMP_FW_MONITOR); | |
2684 | fw_mon_data = (void *)(*data)->data; | |
2685 | fw_mon_data->fw_mon_wr_ptr = | |
2686 | cpu_to_le32(iwl_read_prph(trans, write_ptr)); | |
2687 | fw_mon_data->fw_mon_cycle_cnt = | |
2688 | cpu_to_le32(iwl_read_prph(trans, wrap_cnt)); | |
2689 | fw_mon_data->fw_mon_base_ptr = | |
2690 | cpu_to_le32(iwl_read_prph(trans, base)); | |
2691 | ||
2692 | len += sizeof(**data) + sizeof(*fw_mon_data); | |
2693 | if (trans_pcie->fw_mon_page) { | |
2694 | /* | |
2695 | * The firmware is now asserted, it won't write anything | |
2696 | * to the buffer. CPU can take ownership to fetch the | |
2697 | * data. The buffer will be handed back to the device | |
2698 | * before the firmware will be restarted. | |
2699 | */ | |
2700 | dma_sync_single_for_cpu(trans->dev, | |
2701 | trans_pcie->fw_mon_phys, | |
2702 | trans_pcie->fw_mon_size, | |
2703 | DMA_FROM_DEVICE); | |
2704 | memcpy(fw_mon_data->data, | |
2705 | page_address(trans_pcie->fw_mon_page), | |
2706 | trans_pcie->fw_mon_size); | |
2707 | ||
2708 | monitor_len = trans_pcie->fw_mon_size; | |
2709 | } else if (trans->dbg_dest_tlv->monitor_mode == SMEM_MODE) { | |
2710 | /* | |
2711 | * Update pointers to reflect actual values after | |
2712 | * shifting | |
2713 | */ | |
2714 | base = iwl_read_prph(trans, base) << | |
2715 | trans->dbg_dest_tlv->base_shift; | |
2716 | iwl_trans_read_mem(trans, base, fw_mon_data->data, | |
2717 | monitor_len / sizeof(u32)); | |
2718 | } else if (trans->dbg_dest_tlv->monitor_mode == MARBH_MODE) { | |
2719 | monitor_len = | |
2720 | iwl_trans_pci_dump_marbh_monitor(trans, | |
2721 | fw_mon_data, | |
2722 | monitor_len); | |
2723 | } else { | |
2724 | /* Didn't match anything - output no monitor data */ | |
2725 | monitor_len = 0; | |
2726 | } | |
2727 | ||
2728 | len += monitor_len; | |
2729 | (*data)->len = cpu_to_le32(monitor_len + sizeof(*fw_mon_data)); | |
2730 | } | |
2731 | ||
2732 | return len; | |
2733 | } | |
2734 | ||
2735 | static struct iwl_trans_dump_data | |
2736 | *iwl_trans_pcie_dump_data(struct iwl_trans *trans, | |
a80c7a69 | 2737 | const struct iwl_fw_dbg_trigger_tlv *trigger) |
4d075007 JB |
2738 | { |
2739 | struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans); | |
2740 | struct iwl_fw_error_dump_data *data; | |
b2a3b1c1 | 2741 | struct iwl_txq *cmdq = trans_pcie->txq[trans_pcie->cmd_queue]; |
4d075007 | 2742 | struct iwl_fw_error_dump_txcmd *txcmd; |
48eb7b34 | 2743 | struct iwl_trans_dump_data *dump_data; |
bd7fc617 | 2744 | u32 len, num_rbs; |
99684ae3 | 2745 | u32 monitor_len; |
4d075007 | 2746 | int i, ptr; |
96a6497b SS |
2747 | bool dump_rbs = test_bit(STATUS_FW_ERROR, &trans->status) && |
2748 | !trans->cfg->mq_rx_supported; | |
4d075007 | 2749 | |
473ad712 EG |
2750 | /* transport dump header */ |
2751 | len = sizeof(*dump_data); | |
2752 | ||
2753 | /* host commands */ | |
2754 | len += sizeof(*data) + | |
bb98ecd4 | 2755 | cmdq->n_window * (sizeof(*txcmd) + TFD_MAX_PAYLOAD_SIZE); |
c2d20201 | 2756 | |
473ad712 | 2757 | /* FW monitor */ |
99684ae3 | 2758 | if (trans_pcie->fw_mon_page) { |
c544e9c4 | 2759 | len += sizeof(*data) + sizeof(struct iwl_fw_error_dump_fw_mon) + |
99684ae3 LK |
2760 | trans_pcie->fw_mon_size; |
2761 | monitor_len = trans_pcie->fw_mon_size; | |
2762 | } else if (trans->dbg_dest_tlv) { | |
2763 | u32 base, end; | |
2764 | ||
2765 | base = le32_to_cpu(trans->dbg_dest_tlv->base_reg); | |
2766 | end = le32_to_cpu(trans->dbg_dest_tlv->end_reg); | |
2767 | ||
2768 | base = iwl_read_prph(trans, base) << | |
2769 | trans->dbg_dest_tlv->base_shift; | |
2770 | end = iwl_read_prph(trans, end) << | |
2771 | trans->dbg_dest_tlv->end_shift; | |
2772 | ||
2773 | /* Make "end" point to the actual end */ | |
6e584873 | 2774 | if (trans->cfg->device_family >= IWL_DEVICE_FAMILY_8000 || |
cc79ef66 | 2775 | trans->dbg_dest_tlv->monitor_mode == MARBH_MODE) |
99684ae3 LK |
2776 | end += (1 << trans->dbg_dest_tlv->end_shift); |
2777 | monitor_len = end - base; | |
2778 | len += sizeof(*data) + sizeof(struct iwl_fw_error_dump_fw_mon) + | |
2779 | monitor_len; | |
2780 | } else { | |
2781 | monitor_len = 0; | |
2782 | } | |
c2d20201 | 2783 | |
36fb9017 OG |
2784 | if (trigger && (trigger->mode & IWL_FW_DBG_TRIGGER_MONITOR_ONLY)) { |
2785 | dump_data = vzalloc(len); | |
2786 | if (!dump_data) | |
2787 | return NULL; | |
2788 | ||
2789 | data = (void *)dump_data->data; | |
2790 | len = iwl_trans_pcie_dump_monitor(trans, &data, monitor_len); | |
2791 | dump_data->len = len; | |
2792 | ||
2793 | return dump_data; | |
2794 | } | |
2795 | ||
2796 | /* CSR registers */ | |
2797 | len += sizeof(*data) + IWL_CSR_TO_DUMP; | |
2798 | ||
36fb9017 | 2799 | /* FH registers */ |
723b45e2 LK |
2800 | if (trans->cfg->gen2) |
2801 | len += sizeof(*data) + | |
2802 | (FH_MEM_UPPER_BOUND_GEN2 - FH_MEM_LOWER_BOUND_GEN2); | |
2803 | else | |
2804 | len += sizeof(*data) + | |
2805 | (FH_MEM_UPPER_BOUND - FH_MEM_LOWER_BOUND); | |
36fb9017 OG |
2806 | |
2807 | if (dump_rbs) { | |
78485054 SS |
2808 | /* Dump RBs is supported only for pre-9000 devices (1 queue) */ |
2809 | struct iwl_rxq *rxq = &trans_pcie->rxq[0]; | |
36fb9017 | 2810 | /* RBs */ |
78485054 | 2811 | num_rbs = le16_to_cpu(ACCESS_ONCE(rxq->rb_stts->closed_rb_num)) |
36fb9017 | 2812 | & 0x0FFF; |
78485054 | 2813 | num_rbs = (num_rbs - rxq->read) & RX_QUEUE_MASK; |
36fb9017 OG |
2814 | len += num_rbs * (sizeof(*data) + |
2815 | sizeof(struct iwl_fw_error_dump_rb) + | |
2816 | (PAGE_SIZE << trans_pcie->rx_page_order)); | |
2817 | } | |
2818 | ||
5538409b LK |
2819 | /* Paged memory for gen2 HW */ |
2820 | if (trans->cfg->gen2) | |
2821 | for (i = 0; i < trans_pcie->init_dram.paging_cnt; i++) | |
2822 | len += sizeof(*data) + | |
2823 | sizeof(struct iwl_fw_error_dump_paging) + | |
2824 | trans_pcie->init_dram.paging[i].size; | |
2825 | ||
48eb7b34 EG |
2826 | dump_data = vzalloc(len); |
2827 | if (!dump_data) | |
2828 | return NULL; | |
4d075007 JB |
2829 | |
2830 | len = 0; | |
48eb7b34 | 2831 | data = (void *)dump_data->data; |
4d075007 JB |
2832 | data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_TXCMD); |
2833 | txcmd = (void *)data->data; | |
2834 | spin_lock_bh(&cmdq->lock); | |
bb98ecd4 SS |
2835 | ptr = cmdq->write_ptr; |
2836 | for (i = 0; i < cmdq->n_window; i++) { | |
2837 | u8 idx = get_cmd_index(cmdq, ptr); | |
4d075007 JB |
2838 | u32 caplen, cmdlen; |
2839 | ||
6983ba69 SS |
2840 | cmdlen = iwl_trans_pcie_get_cmdlen(trans, cmdq->tfds + |
2841 | trans_pcie->tfd_size * ptr); | |
4d075007 JB |
2842 | caplen = min_t(u32, TFD_MAX_PAYLOAD_SIZE, cmdlen); |
2843 | ||
2844 | if (cmdlen) { | |
2845 | len += sizeof(*txcmd) + caplen; | |
2846 | txcmd->cmdlen = cpu_to_le32(cmdlen); | |
2847 | txcmd->caplen = cpu_to_le32(caplen); | |
2848 | memcpy(txcmd->data, cmdq->entries[idx].cmd, caplen); | |
2849 | txcmd = (void *)((u8 *)txcmd->data + caplen); | |
2850 | } | |
2851 | ||
2852 | ptr = iwl_queue_dec_wrap(ptr); | |
2853 | } | |
2854 | spin_unlock_bh(&cmdq->lock); | |
2855 | ||
2856 | data->len = cpu_to_le32(len); | |
c2d20201 | 2857 | len += sizeof(*data); |
67c65f2c EG |
2858 | data = iwl_fw_error_next_data(data); |
2859 | ||
473ad712 | 2860 | len += iwl_trans_pcie_dump_csr(trans, &data); |
06d51e0d | 2861 | len += iwl_trans_pcie_fh_regs_dump(trans, &data); |
bd7fc617 EG |
2862 | if (dump_rbs) |
2863 | len += iwl_trans_pcie_dump_rbs(trans, &data, num_rbs); | |
c2d20201 | 2864 | |
5538409b LK |
2865 | /* Paged memory for gen2 HW */ |
2866 | if (trans->cfg->gen2) { | |
2867 | for (i = 0; i < trans_pcie->init_dram.paging_cnt; i++) { | |
2868 | struct iwl_fw_error_dump_paging *paging; | |
2869 | dma_addr_t addr = | |
2870 | trans_pcie->init_dram.paging[i].physical; | |
2871 | u32 page_len = trans_pcie->init_dram.paging[i].size; | |
2872 | ||
2873 | data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_PAGING); | |
2874 | data->len = cpu_to_le32(sizeof(*paging) + page_len); | |
2875 | paging = (void *)data->data; | |
2876 | paging->index = cpu_to_le32(i); | |
2877 | dma_sync_single_for_cpu(trans->dev, addr, page_len, | |
2878 | DMA_BIDIRECTIONAL); | |
2879 | memcpy(paging->data, | |
2880 | trans_pcie->init_dram.paging[i].block, page_len); | |
2881 | data = iwl_fw_error_next_data(data); | |
2882 | ||
2883 | len += sizeof(*data) + sizeof(*paging) + page_len; | |
2884 | } | |
2885 | } | |
2886 | ||
36fb9017 | 2887 | len += iwl_trans_pcie_dump_monitor(trans, &data, monitor_len); |
c2d20201 | 2888 | |
48eb7b34 EG |
2889 | dump_data->len = len; |
2890 | ||
2891 | return dump_data; | |
4d075007 | 2892 | } |
87e5666c | 2893 | |
4cbb8e50 LC |
2894 | #ifdef CONFIG_PM_SLEEP |
2895 | static int iwl_trans_pcie_suspend(struct iwl_trans *trans) | |
2896 | { | |
e4c49c49 LC |
2897 | if (trans->runtime_pm_mode == IWL_PLAT_PM_MODE_D0I3 && |
2898 | (trans->system_pm_mode == IWL_PLAT_PM_MODE_D0I3)) | |
4cbb8e50 LC |
2899 | return iwl_pci_fw_enter_d0i3(trans); |
2900 | ||
2901 | return 0; | |
2902 | } | |
2903 | ||
2904 | static void iwl_trans_pcie_resume(struct iwl_trans *trans) | |
2905 | { | |
e4c49c49 LC |
2906 | if (trans->runtime_pm_mode == IWL_PLAT_PM_MODE_D0I3 && |
2907 | (trans->system_pm_mode == IWL_PLAT_PM_MODE_D0I3)) | |
4cbb8e50 LC |
2908 | iwl_pci_fw_exit_d0i3(trans); |
2909 | } | |
2910 | #endif /* CONFIG_PM_SLEEP */ | |
2911 | ||
623e7766 SS |
2912 | #define IWL_TRANS_COMMON_OPS \ |
2913 | .op_mode_leave = iwl_trans_pcie_op_mode_leave, \ | |
2914 | .write8 = iwl_trans_pcie_write8, \ | |
2915 | .write32 = iwl_trans_pcie_write32, \ | |
2916 | .read32 = iwl_trans_pcie_read32, \ | |
2917 | .read_prph = iwl_trans_pcie_read_prph, \ | |
2918 | .write_prph = iwl_trans_pcie_write_prph, \ | |
2919 | .read_mem = iwl_trans_pcie_read_mem, \ | |
2920 | .write_mem = iwl_trans_pcie_write_mem, \ | |
2921 | .configure = iwl_trans_pcie_configure, \ | |
2922 | .set_pmi = iwl_trans_pcie_set_pmi, \ | |
2923 | .grab_nic_access = iwl_trans_pcie_grab_nic_access, \ | |
2924 | .release_nic_access = iwl_trans_pcie_release_nic_access, \ | |
2925 | .set_bits_mask = iwl_trans_pcie_set_bits_mask, \ | |
2926 | .ref = iwl_trans_pcie_ref, \ | |
2927 | .unref = iwl_trans_pcie_unref, \ | |
2928 | .dump_data = iwl_trans_pcie_dump_data, \ | |
623e7766 SS |
2929 | .d3_suspend = iwl_trans_pcie_d3_suspend, \ |
2930 | .d3_resume = iwl_trans_pcie_d3_resume | |
2931 | ||
2932 | #ifdef CONFIG_PM_SLEEP | |
2933 | #define IWL_TRANS_PM_OPS \ | |
2934 | .suspend = iwl_trans_pcie_suspend, \ | |
2935 | .resume = iwl_trans_pcie_resume, | |
2936 | #else | |
2937 | #define IWL_TRANS_PM_OPS | |
2938 | #endif /* CONFIG_PM_SLEEP */ | |
2939 | ||
d1ff5253 | 2940 | static const struct iwl_trans_ops trans_ops_pcie = { |
623e7766 SS |
2941 | IWL_TRANS_COMMON_OPS, |
2942 | IWL_TRANS_PM_OPS | |
57a1dc89 | 2943 | .start_hw = iwl_trans_pcie_start_hw, |
ed6a3803 | 2944 | .fw_alive = iwl_trans_pcie_fw_alive, |
cf614297 | 2945 | .start_fw = iwl_trans_pcie_start_fw, |
e6bb4c9c | 2946 | .stop_device = iwl_trans_pcie_stop_device, |
48d42c42 | 2947 | |
623e7766 | 2948 | .send_cmd = iwl_trans_pcie_send_hcmd, |
2dd4f9f7 | 2949 | |
623e7766 SS |
2950 | .tx = iwl_trans_pcie_tx, |
2951 | .reclaim = iwl_trans_pcie_reclaim, | |
2952 | ||
2953 | .txq_disable = iwl_trans_pcie_txq_disable, | |
2954 | .txq_enable = iwl_trans_pcie_txq_enable, | |
2955 | ||
2956 | .txq_set_shared_mode = iwl_trans_pcie_txq_set_shared_mode, | |
2957 | ||
d6d517b7 SS |
2958 | .wait_tx_queues_empty = iwl_trans_pcie_wait_txqs_empty, |
2959 | ||
623e7766 SS |
2960 | .freeze_txq_timer = iwl_trans_pcie_freeze_txq_timer, |
2961 | .block_txq_ptrs = iwl_trans_pcie_block_txq_ptrs, | |
2962 | }; | |
2963 | ||
2964 | static const struct iwl_trans_ops trans_ops_pcie_gen2 = { | |
2965 | IWL_TRANS_COMMON_OPS, | |
2966 | IWL_TRANS_PM_OPS | |
2967 | .start_hw = iwl_trans_pcie_start_hw, | |
eda50cde SS |
2968 | .fw_alive = iwl_trans_pcie_gen2_fw_alive, |
2969 | .start_fw = iwl_trans_pcie_gen2_start_fw, | |
77c09bc8 | 2970 | .stop_device = iwl_trans_pcie_gen2_stop_device, |
4cbb8e50 | 2971 | |
ca60da2e | 2972 | .send_cmd = iwl_trans_pcie_gen2_send_hcmd, |
c85eb619 | 2973 | |
ab6c6445 | 2974 | .tx = iwl_trans_pcie_gen2_tx, |
a0eaad71 | 2975 | .reclaim = iwl_trans_pcie_reclaim, |
34c1b7ba | 2976 | |
6b35ff91 SS |
2977 | .txq_alloc = iwl_trans_pcie_dyn_txq_alloc, |
2978 | .txq_free = iwl_trans_pcie_dyn_txq_free, | |
d6d517b7 | 2979 | .wait_txq_empty = iwl_trans_pcie_wait_txq_empty, |
e6bb4c9c | 2980 | }; |
a42a1844 | 2981 | |
87ce05a2 | 2982 | struct iwl_trans *iwl_trans_pcie_alloc(struct pci_dev *pdev, |
035f7ff2 EG |
2983 | const struct pci_device_id *ent, |
2984 | const struct iwl_cfg *cfg) | |
a42a1844 | 2985 | { |
a42a1844 EG |
2986 | struct iwl_trans_pcie *trans_pcie; |
2987 | struct iwl_trans *trans; | |
96a6497b | 2988 | int ret, addr_size; |
a42a1844 | 2989 | |
5a41a86c SD |
2990 | ret = pcim_enable_device(pdev); |
2991 | if (ret) | |
2992 | return ERR_PTR(ret); | |
2993 | ||
623e7766 SS |
2994 | if (cfg->gen2) |
2995 | trans = iwl_trans_alloc(sizeof(struct iwl_trans_pcie), | |
2996 | &pdev->dev, cfg, &trans_ops_pcie_gen2); | |
2997 | else | |
2998 | trans = iwl_trans_alloc(sizeof(struct iwl_trans_pcie), | |
2999 | &pdev->dev, cfg, &trans_ops_pcie); | |
7b501d10 JB |
3000 | if (!trans) |
3001 | return ERR_PTR(-ENOMEM); | |
a42a1844 EG |
3002 | |
3003 | trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans); | |
3004 | ||
a42a1844 | 3005 | trans_pcie->trans = trans; |
326477e4 | 3006 | trans_pcie->opmode_down = true; |
7b11488f | 3007 | spin_lock_init(&trans_pcie->irq_lock); |
e56b04ef | 3008 | spin_lock_init(&trans_pcie->reg_lock); |
fa9f3281 | 3009 | mutex_init(&trans_pcie->mutex); |
13df1aab | 3010 | init_waitqueue_head(&trans_pcie->ucode_write_waitq); |
6eb5e529 EG |
3011 | trans_pcie->tso_hdr_page = alloc_percpu(struct iwl_tso_hdr_page); |
3012 | if (!trans_pcie->tso_hdr_page) { | |
3013 | ret = -ENOMEM; | |
3014 | goto out_no_pci; | |
3015 | } | |
a42a1844 | 3016 | |
d819c6cf | 3017 | |
f2532b04 EG |
3018 | if (!cfg->base_params->pcie_l1_allowed) { |
3019 | /* | |
3020 | * W/A - seems to solve weird behavior. We need to remove this | |
3021 | * if we don't want to stay in L1 all the time. This wastes a | |
3022 | * lot of power. | |
3023 | */ | |
3024 | pci_disable_link_state(pdev, PCIE_LINK_STATE_L0S | | |
3025 | PCIE_LINK_STATE_L1 | | |
3026 | PCIE_LINK_STATE_CLKPM); | |
3027 | } | |
a42a1844 | 3028 | |
6983ba69 | 3029 | if (cfg->use_tfh) { |
2c6262b7 | 3030 | addr_size = 64; |
3cd1980b | 3031 | trans_pcie->max_tbs = IWL_TFH_NUM_TBS; |
8352e62a | 3032 | trans_pcie->tfd_size = sizeof(struct iwl_tfh_tfd); |
6983ba69 | 3033 | } else { |
2c6262b7 | 3034 | addr_size = 36; |
3cd1980b | 3035 | trans_pcie->max_tbs = IWL_NUM_OF_TBS; |
6983ba69 SS |
3036 | trans_pcie->tfd_size = sizeof(struct iwl_tfd); |
3037 | } | |
3cd1980b SS |
3038 | trans->max_skb_frags = IWL_PCIE_MAX_FRAGS(trans_pcie); |
3039 | ||
a42a1844 EG |
3040 | pci_set_master(pdev); |
3041 | ||
96a6497b | 3042 | ret = pci_set_dma_mask(pdev, DMA_BIT_MASK(addr_size)); |
af3f2f74 | 3043 | if (!ret) |
96a6497b SS |
3044 | ret = pci_set_consistent_dma_mask(pdev, |
3045 | DMA_BIT_MASK(addr_size)); | |
af3f2f74 EG |
3046 | if (ret) { |
3047 | ret = pci_set_dma_mask(pdev, DMA_BIT_MASK(32)); | |
3048 | if (!ret) | |
3049 | ret = pci_set_consistent_dma_mask(pdev, | |
20d3b647 | 3050 | DMA_BIT_MASK(32)); |
a42a1844 | 3051 | /* both attempts failed: */ |
af3f2f74 | 3052 | if (ret) { |
6a4b09f8 | 3053 | dev_err(&pdev->dev, "No suitable DMA available\n"); |
5a41a86c | 3054 | goto out_no_pci; |
a42a1844 EG |
3055 | } |
3056 | } | |
3057 | ||
5a41a86c | 3058 | ret = pcim_iomap_regions_request_all(pdev, BIT(0), DRV_NAME); |
af3f2f74 | 3059 | if (ret) { |
5a41a86c SD |
3060 | dev_err(&pdev->dev, "pcim_iomap_regions_request_all failed\n"); |
3061 | goto out_no_pci; | |
a42a1844 EG |
3062 | } |
3063 | ||
5a41a86c | 3064 | trans_pcie->hw_base = pcim_iomap_table(pdev)[0]; |
a42a1844 | 3065 | if (!trans_pcie->hw_base) { |
5a41a86c | 3066 | dev_err(&pdev->dev, "pcim_iomap_table failed\n"); |
af3f2f74 | 3067 | ret = -ENODEV; |
5a41a86c | 3068 | goto out_no_pci; |
a42a1844 EG |
3069 | } |
3070 | ||
a42a1844 EG |
3071 | /* We disable the RETRY_TIMEOUT register (0x41) to keep |
3072 | * PCI Tx retries from interfering with C3 CPU state */ | |
3073 | pci_write_config_byte(pdev, PCI_CFG_RETRY_TIMEOUT, 0x00); | |
3074 | ||
83f7a85f EG |
3075 | trans_pcie->pci_dev = pdev; |
3076 | iwl_disable_interrupts(trans); | |
3077 | ||
08079a49 | 3078 | trans->hw_rev = iwl_read32(trans, CSR_HW_REV); |
b513ee7f LK |
3079 | /* |
3080 | * In the 8000 HW family the format of the 4 bytes of CSR_HW_REV have | |
3081 | * changed, and now the revision step also includes bit 0-1 (no more | |
3082 | * "dash" value). To keep hw_rev backwards compatible - we'll store it | |
3083 | * in the old format. | |
3084 | */ | |
6e584873 | 3085 | if (trans->cfg->device_family >= IWL_DEVICE_FAMILY_8000) { |
7a42baa6 | 3086 | unsigned long flags; |
7a42baa6 | 3087 | |
b513ee7f | 3088 | trans->hw_rev = (trans->hw_rev & 0xfff0) | |
1fc0e221 | 3089 | (CSR_HW_REV_STEP(trans->hw_rev << 2) << 2); |
b513ee7f | 3090 | |
f9e5554c EG |
3091 | ret = iwl_pcie_prepare_card_hw(trans); |
3092 | if (ret) { | |
3093 | IWL_WARN(trans, "Exit HW not ready\n"); | |
5a41a86c | 3094 | goto out_no_pci; |
f9e5554c EG |
3095 | } |
3096 | ||
7a42baa6 EH |
3097 | /* |
3098 | * in-order to recognize C step driver should read chip version | |
3099 | * id located at the AUX bus MISC address space. | |
3100 | */ | |
3101 | iwl_set_bit(trans, CSR_GP_CNTRL, | |
3102 | CSR_GP_CNTRL_REG_FLAG_INIT_DONE); | |
3103 | udelay(2); | |
3104 | ||
3105 | ret = iwl_poll_bit(trans, CSR_GP_CNTRL, | |
3106 | CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY, | |
3107 | CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY, | |
3108 | 25000); | |
3109 | if (ret < 0) { | |
3110 | IWL_DEBUG_INFO(trans, "Failed to wake up the nic\n"); | |
5a41a86c | 3111 | goto out_no_pci; |
7a42baa6 EH |
3112 | } |
3113 | ||
23ba9340 | 3114 | if (iwl_trans_grab_nic_access(trans, &flags)) { |
7a42baa6 EH |
3115 | u32 hw_step; |
3116 | ||
14ef1b43 | 3117 | hw_step = iwl_read_prph_no_grab(trans, WFPM_CTRL_REG); |
7a42baa6 | 3118 | hw_step |= ENABLE_WFPM; |
14ef1b43 GBA |
3119 | iwl_write_prph_no_grab(trans, WFPM_CTRL_REG, hw_step); |
3120 | hw_step = iwl_read_prph_no_grab(trans, AUX_MISC_REG); | |
7a42baa6 EH |
3121 | hw_step = (hw_step >> HW_STEP_LOCATION_BITS) & 0xF; |
3122 | if (hw_step == 0x3) | |
3123 | trans->hw_rev = (trans->hw_rev & 0xFFFFFFF3) | | |
3124 | (SILICON_C_STEP << 2); | |
3125 | iwl_trans_release_nic_access(trans, &flags); | |
3126 | } | |
3127 | } | |
3128 | ||
c00ee467 JB |
3129 | /* |
3130 | * 9000-series integrated A-step has a problem with suspend/resume | |
3131 | * and sometimes even causes the whole platform to get stuck. This | |
3132 | * workaround makes the hardware not go into the problematic state. | |
3133 | */ | |
3134 | if (trans->cfg->integrated && | |
3135 | trans->cfg->device_family == IWL_DEVICE_FAMILY_9000 && | |
3136 | CSR_HW_REV_STEP(trans->hw_rev) == SILICON_A_STEP) | |
3137 | iwl_set_bit(trans, CSR_HOST_CHICKEN, | |
3138 | CSR_HOST_CHICKEN_PM_IDLE_SRC_DIS_SB_PME); | |
3139 | ||
1afb0ae4 HD |
3140 | trans->hw_rf_id = iwl_read32(trans, CSR_HW_RF_ID); |
3141 | ||
2e5d4a8f | 3142 | iwl_pcie_set_interrupt_capa(pdev, trans); |
99673ee5 | 3143 | trans->hw_id = (pdev->device << 16) + pdev->subsystem_device; |
9ca85961 EG |
3144 | snprintf(trans->hw_id_str, sizeof(trans->hw_id_str), |
3145 | "PCI ID: 0x%04X:0x%04X", pdev->device, pdev->subsystem_device); | |
a42a1844 | 3146 | |
69a10b29 | 3147 | /* Initialize the wait queue for commands */ |
f946b529 | 3148 | init_waitqueue_head(&trans_pcie->wait_command_queue); |
69a10b29 | 3149 | |
4cbb8e50 LC |
3150 | init_waitqueue_head(&trans_pcie->d0i3_waitq); |
3151 | ||
2e5d4a8f HD |
3152 | if (trans_pcie->msix_enabled) { |
3153 | if (iwl_pcie_init_msix_handler(pdev, trans_pcie)) | |
5a41a86c | 3154 | goto out_no_pci; |
2e5d4a8f HD |
3155 | } else { |
3156 | ret = iwl_pcie_alloc_ict(trans); | |
3157 | if (ret) | |
5a41a86c | 3158 | goto out_no_pci; |
a8b691e6 | 3159 | |
5a41a86c SD |
3160 | ret = devm_request_threaded_irq(&pdev->dev, pdev->irq, |
3161 | iwl_pcie_isr, | |
3162 | iwl_pcie_irq_handler, | |
3163 | IRQF_SHARED, DRV_NAME, trans); | |
2e5d4a8f HD |
3164 | if (ret) { |
3165 | IWL_ERR(trans, "Error allocating IRQ %d\n", pdev->irq); | |
3166 | goto out_free_ict; | |
3167 | } | |
3168 | trans_pcie->inta_mask = CSR_INI_SET_MASK; | |
3169 | } | |
83f7a85f | 3170 | |
b3ff1270 LC |
3171 | #ifdef CONFIG_IWLWIFI_PCIE_RTPM |
3172 | trans->runtime_pm_mode = IWL_PLAT_PM_MODE_D0I3; | |
3173 | #else | |
3174 | trans->runtime_pm_mode = IWL_PLAT_PM_MODE_DISABLED; | |
3175 | #endif /* CONFIG_IWLWIFI_PCIE_RTPM */ | |
3176 | ||
a42a1844 EG |
3177 | return trans; |
3178 | ||
a8b691e6 JB |
3179 | out_free_ict: |
3180 | iwl_pcie_free_ict(trans); | |
a42a1844 | 3181 | out_no_pci: |
6eb5e529 | 3182 | free_percpu(trans_pcie->tso_hdr_page); |
7b501d10 | 3183 | iwl_trans_free(trans); |
af3f2f74 | 3184 | return ERR_PTR(ret); |
a42a1844 | 3185 | } |