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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 | * | |
51368bf7 | 8 | * Copyright(c) 2007 - 2014 Intel Corporation. All rights reserved. |
8b4139dc | 9 | * Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH |
c85eb619 EG |
10 | * |
11 | * This program is free software; you can redistribute it and/or modify | |
12 | * it under the terms of version 2 of the GNU General Public License as | |
13 | * published by the Free Software Foundation. | |
14 | * | |
15 | * This program is distributed in the hope that it will be useful, but | |
16 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
18 | * General Public License for more details. | |
19 | * | |
20 | * You should have received a copy of the GNU General Public License | |
21 | * along with this program; if not, write to the Free Software | |
22 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110, | |
23 | * USA | |
24 | * | |
25 | * The full GNU General Public License is included in this distribution | |
410dc5aa | 26 | * in the file called COPYING. |
c85eb619 EG |
27 | * |
28 | * Contact Information: | |
29 | * Intel Linux Wireless <ilw@linux.intel.com> | |
30 | * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 | |
31 | * | |
32 | * BSD LICENSE | |
33 | * | |
51368bf7 | 34 | * Copyright(c) 2005 - 2014 Intel Corporation. All rights reserved. |
8b4139dc | 35 | * Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH |
c85eb619 EG |
36 | * All rights reserved. |
37 | * | |
38 | * Redistribution and use in source and binary forms, with or without | |
39 | * modification, are permitted provided that the following conditions | |
40 | * are met: | |
41 | * | |
42 | * * Redistributions of source code must retain the above copyright | |
43 | * notice, this list of conditions and the following disclaimer. | |
44 | * * Redistributions in binary form must reproduce the above copyright | |
45 | * notice, this list of conditions and the following disclaimer in | |
46 | * the documentation and/or other materials provided with the | |
47 | * distribution. | |
48 | * * Neither the name Intel Corporation nor the names of its | |
49 | * contributors may be used to endorse or promote products derived | |
50 | * from this software without specific prior written permission. | |
51 | * | |
52 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
53 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
54 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | |
55 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | |
56 | * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
57 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | |
58 | * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | |
59 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | |
60 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
61 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | |
62 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
63 | * | |
64 | *****************************************************************************/ | |
a42a1844 EG |
65 | #include <linux/pci.h> |
66 | #include <linux/pci-aspm.h> | |
e6bb4c9c | 67 | #include <linux/interrupt.h> |
87e5666c | 68 | #include <linux/debugfs.h> |
cf614297 | 69 | #include <linux/sched.h> |
6d8f6eeb EG |
70 | #include <linux/bitops.h> |
71 | #include <linux/gfp.h> | |
48eb7b34 | 72 | #include <linux/vmalloc.h> |
e6bb4c9c | 73 | |
82575102 | 74 | #include "iwl-drv.h" |
c85eb619 | 75 | #include "iwl-trans.h" |
522376d2 EG |
76 | #include "iwl-csr.h" |
77 | #include "iwl-prph.h" | |
7a10e3e4 | 78 | #include "iwl-agn-hw.h" |
4d075007 | 79 | #include "iwl-fw-error-dump.h" |
6468a01a | 80 | #include "internal.h" |
0439bb62 | 81 | |
c2d20201 EG |
82 | static void iwl_pcie_free_fw_monitor(struct iwl_trans *trans) |
83 | { | |
84 | struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans); | |
85 | ||
86 | if (!trans_pcie->fw_mon_page) | |
87 | return; | |
88 | ||
89 | dma_unmap_page(trans->dev, trans_pcie->fw_mon_phys, | |
90 | trans_pcie->fw_mon_size, DMA_FROM_DEVICE); | |
91 | __free_pages(trans_pcie->fw_mon_page, | |
92 | get_order(trans_pcie->fw_mon_size)); | |
93 | trans_pcie->fw_mon_page = NULL; | |
94 | trans_pcie->fw_mon_phys = 0; | |
95 | trans_pcie->fw_mon_size = 0; | |
96 | } | |
97 | ||
98 | static void iwl_pcie_alloc_fw_monitor(struct iwl_trans *trans) | |
99 | { | |
100 | struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans); | |
101 | struct page *page; | |
102 | dma_addr_t phys; | |
103 | u32 size; | |
104 | u8 power; | |
105 | ||
106 | if (trans_pcie->fw_mon_page) { | |
107 | dma_sync_single_for_device(trans->dev, trans_pcie->fw_mon_phys, | |
108 | trans_pcie->fw_mon_size, | |
109 | DMA_FROM_DEVICE); | |
110 | return; | |
111 | } | |
112 | ||
113 | phys = 0; | |
114 | for (power = 26; power >= 11; power--) { | |
115 | int order; | |
116 | ||
117 | size = BIT(power); | |
118 | order = get_order(size); | |
119 | page = alloc_pages(__GFP_COMP | __GFP_NOWARN | __GFP_ZERO, | |
120 | order); | |
121 | if (!page) | |
122 | continue; | |
123 | ||
124 | phys = dma_map_page(trans->dev, page, 0, PAGE_SIZE << order, | |
125 | DMA_FROM_DEVICE); | |
126 | if (dma_mapping_error(trans->dev, phys)) { | |
127 | __free_pages(page, order); | |
128 | continue; | |
129 | } | |
130 | IWL_INFO(trans, | |
131 | "Allocated 0x%08x bytes (order %d) for firmware monitor.\n", | |
132 | size, order); | |
133 | break; | |
134 | } | |
135 | ||
40a76905 | 136 | if (WARN_ON_ONCE(!page)) |
c2d20201 EG |
137 | return; |
138 | ||
139 | trans_pcie->fw_mon_page = page; | |
140 | trans_pcie->fw_mon_phys = phys; | |
141 | trans_pcie->fw_mon_size = size; | |
142 | } | |
143 | ||
a812cba9 AB |
144 | static u32 iwl_trans_pcie_read_shr(struct iwl_trans *trans, u32 reg) |
145 | { | |
146 | iwl_write32(trans, HEEP_CTRL_WRD_PCIEX_CTRL_REG, | |
147 | ((reg & 0x0000ffff) | (2 << 28))); | |
148 | return iwl_read32(trans, HEEP_CTRL_WRD_PCIEX_DATA_REG); | |
149 | } | |
150 | ||
151 | static void iwl_trans_pcie_write_shr(struct iwl_trans *trans, u32 reg, u32 val) | |
152 | { | |
153 | iwl_write32(trans, HEEP_CTRL_WRD_PCIEX_DATA_REG, val); | |
154 | iwl_write32(trans, HEEP_CTRL_WRD_PCIEX_CTRL_REG, | |
155 | ((reg & 0x0000ffff) | (3 << 28))); | |
156 | } | |
157 | ||
ddaf5a5b | 158 | static void iwl_pcie_set_pwr(struct iwl_trans *trans, bool vaux) |
392f8b78 | 159 | { |
ddaf5a5b JB |
160 | if (vaux && pci_pme_capable(to_pci_dev(trans->dev), PCI_D3cold)) |
161 | iwl_set_bits_mask_prph(trans, APMG_PS_CTRL_REG, | |
162 | APMG_PS_CTRL_VAL_PWR_SRC_VAUX, | |
163 | ~APMG_PS_CTRL_MSK_PWR_SRC); | |
164 | else | |
165 | iwl_set_bits_mask_prph(trans, APMG_PS_CTRL_REG, | |
166 | APMG_PS_CTRL_VAL_PWR_SRC_VMAIN, | |
167 | ~APMG_PS_CTRL_MSK_PWR_SRC); | |
392f8b78 EG |
168 | } |
169 | ||
af634bee EG |
170 | /* PCI registers */ |
171 | #define PCI_CFG_RETRY_TIMEOUT 0x041 | |
af634bee | 172 | |
7afe3705 | 173 | static void iwl_pcie_apm_config(struct iwl_trans *trans) |
af634bee | 174 | { |
20d3b647 | 175 | struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans); |
7afe3705 | 176 | u16 lctl; |
9180ac50 | 177 | u16 cap; |
af634bee | 178 | |
af634bee EG |
179 | /* |
180 | * HW bug W/A for instability in PCIe bus L0S->L1 transition. | |
181 | * Check if BIOS (or OS) enabled L1-ASPM on this device. | |
182 | * If so (likely), disable L0S, so device moves directly L0->L1; | |
183 | * costs negligible amount of power savings. | |
184 | * If not (unlikely), enable L0S, so there is at least some | |
185 | * power savings, even without L1. | |
186 | */ | |
7afe3705 | 187 | pcie_capability_read_word(trans_pcie->pci_dev, PCI_EXP_LNKCTL, &lctl); |
9180ac50 | 188 | if (lctl & PCI_EXP_LNKCTL_ASPM_L1) |
af634bee | 189 | iwl_set_bit(trans, CSR_GIO_REG, CSR_GIO_REG_VAL_L0S_ENABLED); |
9180ac50 | 190 | else |
af634bee | 191 | iwl_clear_bit(trans, CSR_GIO_REG, CSR_GIO_REG_VAL_L0S_ENABLED); |
438a0f0a | 192 | trans->pm_support = !(lctl & PCI_EXP_LNKCTL_ASPM_L0S); |
9180ac50 EG |
193 | |
194 | pcie_capability_read_word(trans_pcie->pci_dev, PCI_EXP_DEVCTL2, &cap); | |
195 | trans->ltr_enabled = cap & PCI_EXP_DEVCTL2_LTR_EN; | |
196 | dev_info(trans->dev, "L1 %sabled - LTR %sabled\n", | |
197 | (lctl & PCI_EXP_LNKCTL_ASPM_L1) ? "En" : "Dis", | |
198 | trans->ltr_enabled ? "En" : "Dis"); | |
af634bee EG |
199 | } |
200 | ||
a6c684ee EG |
201 | /* |
202 | * Start up NIC's basic functionality after it has been reset | |
7afe3705 | 203 | * (e.g. after platform boot, or shutdown via iwl_pcie_apm_stop()) |
a6c684ee EG |
204 | * NOTE: This does not load uCode nor start the embedded processor |
205 | */ | |
7afe3705 | 206 | static int iwl_pcie_apm_init(struct iwl_trans *trans) |
a6c684ee EG |
207 | { |
208 | int ret = 0; | |
209 | IWL_DEBUG_INFO(trans, "Init card's basic functions\n"); | |
210 | ||
211 | /* | |
212 | * Use "set_bit" below rather than "write", to preserve any hardware | |
213 | * bits already set by default after reset. | |
214 | */ | |
215 | ||
216 | /* Disable L0S exit timer (platform NMI Work/Around) */ | |
e4a9f8ce EH |
217 | if (trans->cfg->device_family != IWL_DEVICE_FAMILY_8000) |
218 | iwl_set_bit(trans, CSR_GIO_CHICKEN_BITS, | |
219 | CSR_GIO_CHICKEN_BITS_REG_BIT_DIS_L0S_EXIT_TIMER); | |
a6c684ee EG |
220 | |
221 | /* | |
222 | * Disable L0s without affecting L1; | |
223 | * don't wait for ICH L0s (ICH bug W/A) | |
224 | */ | |
225 | iwl_set_bit(trans, CSR_GIO_CHICKEN_BITS, | |
20d3b647 | 226 | CSR_GIO_CHICKEN_BITS_REG_BIT_L1A_NO_L0S_RX); |
a6c684ee EG |
227 | |
228 | /* Set FH wait threshold to maximum (HW error during stress W/A) */ | |
229 | iwl_set_bit(trans, CSR_DBG_HPET_MEM_REG, CSR_DBG_HPET_MEM_REG_VAL); | |
230 | ||
231 | /* | |
232 | * Enable HAP INTA (interrupt from management bus) to | |
233 | * wake device's PCI Express link L1a -> L0s | |
234 | */ | |
235 | iwl_set_bit(trans, CSR_HW_IF_CONFIG_REG, | |
20d3b647 | 236 | CSR_HW_IF_CONFIG_REG_BIT_HAP_WAKE_L1A); |
a6c684ee | 237 | |
7afe3705 | 238 | iwl_pcie_apm_config(trans); |
a6c684ee EG |
239 | |
240 | /* Configure analog phase-lock-loop before activating to D0A */ | |
035f7ff2 | 241 | if (trans->cfg->base_params->pll_cfg_val) |
a6c684ee | 242 | iwl_set_bit(trans, CSR_ANA_PLL_CFG, |
035f7ff2 | 243 | trans->cfg->base_params->pll_cfg_val); |
a6c684ee EG |
244 | |
245 | /* | |
246 | * Set "initialization complete" bit to move adapter from | |
247 | * D0U* --> D0A* (powered-up active) state. | |
248 | */ | |
249 | iwl_set_bit(trans, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_INIT_DONE); | |
250 | ||
251 | /* | |
252 | * Wait for clock stabilization; once stabilized, access to | |
253 | * device-internal resources is supported, e.g. iwl_write_prph() | |
254 | * and accesses to uCode SRAM. | |
255 | */ | |
256 | ret = iwl_poll_bit(trans, CSR_GP_CNTRL, | |
20d3b647 JB |
257 | CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY, |
258 | CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY, 25000); | |
a6c684ee EG |
259 | if (ret < 0) { |
260 | IWL_DEBUG_INFO(trans, "Failed to init the card\n"); | |
261 | goto out; | |
262 | } | |
263 | ||
2d93aee1 EG |
264 | if (trans->cfg->host_interrupt_operation_mode) { |
265 | /* | |
266 | * This is a bit of an abuse - This is needed for 7260 / 3160 | |
267 | * only check host_interrupt_operation_mode even if this is | |
268 | * not related to host_interrupt_operation_mode. | |
269 | * | |
270 | * Enable the oscillator to count wake up time for L1 exit. This | |
271 | * consumes slightly more power (100uA) - but allows to be sure | |
272 | * that we wake up from L1 on time. | |
273 | * | |
274 | * This looks weird: read twice the same register, discard the | |
275 | * value, set a bit, and yet again, read that same register | |
276 | * just to discard the value. But that's the way the hardware | |
277 | * seems to like it. | |
278 | */ | |
279 | iwl_read_prph(trans, OSC_CLK); | |
280 | iwl_read_prph(trans, OSC_CLK); | |
281 | iwl_set_bits_prph(trans, OSC_CLK, OSC_CLK_FORCE_CONTROL); | |
282 | iwl_read_prph(trans, OSC_CLK); | |
283 | iwl_read_prph(trans, OSC_CLK); | |
284 | } | |
285 | ||
a6c684ee EG |
286 | /* |
287 | * Enable DMA clock and wait for it to stabilize. | |
288 | * | |
3073d8c0 EH |
289 | * Write to "CLK_EN_REG"; "1" bits enable clocks, while "0" |
290 | * bits do not disable clocks. This preserves any hardware | |
291 | * bits already set by default in "CLK_CTRL_REG" after reset. | |
a6c684ee | 292 | */ |
3073d8c0 EH |
293 | if (trans->cfg->device_family != IWL_DEVICE_FAMILY_8000) { |
294 | iwl_write_prph(trans, APMG_CLK_EN_REG, | |
295 | APMG_CLK_VAL_DMA_CLK_RQT); | |
296 | udelay(20); | |
297 | ||
298 | /* Disable L1-Active */ | |
299 | iwl_set_bits_prph(trans, APMG_PCIDEV_STT_REG, | |
300 | APMG_PCIDEV_STT_VAL_L1_ACT_DIS); | |
301 | ||
302 | /* Clear the interrupt in APMG if the NIC is in RFKILL */ | |
303 | iwl_write_prph(trans, APMG_RTC_INT_STT_REG, | |
304 | APMG_RTC_INT_STT_RFKILL); | |
305 | } | |
889b1696 | 306 | |
eb7ff77e | 307 | set_bit(STATUS_DEVICE_ENABLED, &trans->status); |
a6c684ee EG |
308 | |
309 | out: | |
310 | return ret; | |
311 | } | |
312 | ||
a812cba9 AB |
313 | /* |
314 | * Enable LP XTAL to avoid HW bug where device may consume much power if | |
315 | * FW is not loaded after device reset. LP XTAL is disabled by default | |
316 | * after device HW reset. Do it only if XTAL is fed by internal source. | |
317 | * Configure device's "persistence" mode to avoid resetting XTAL again when | |
318 | * SHRD_HW_RST occurs in S3. | |
319 | */ | |
320 | static void iwl_pcie_apm_lp_xtal_enable(struct iwl_trans *trans) | |
321 | { | |
322 | int ret; | |
323 | u32 apmg_gp1_reg; | |
324 | u32 apmg_xtal_cfg_reg; | |
325 | u32 dl_cfg_reg; | |
326 | ||
327 | /* Force XTAL ON */ | |
328 | __iwl_trans_pcie_set_bit(trans, CSR_GP_CNTRL, | |
329 | CSR_GP_CNTRL_REG_FLAG_XTAL_ON); | |
330 | ||
331 | /* Reset entire device - do controller reset (results in SHRD_HW_RST) */ | |
332 | iwl_set_bit(trans, CSR_RESET, CSR_RESET_REG_FLAG_SW_RESET); | |
333 | ||
334 | udelay(10); | |
335 | ||
336 | /* | |
337 | * Set "initialization complete" bit to move adapter from | |
338 | * D0U* --> D0A* (powered-up active) state. | |
339 | */ | |
340 | iwl_set_bit(trans, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_INIT_DONE); | |
341 | ||
342 | /* | |
343 | * Wait for clock stabilization; once stabilized, access to | |
344 | * device-internal resources is possible. | |
345 | */ | |
346 | ret = iwl_poll_bit(trans, CSR_GP_CNTRL, | |
347 | CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY, | |
348 | CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY, | |
349 | 25000); | |
350 | if (WARN_ON(ret < 0)) { | |
351 | IWL_ERR(trans, "Access time out - failed to enable LP XTAL\n"); | |
352 | /* Release XTAL ON request */ | |
353 | __iwl_trans_pcie_clear_bit(trans, CSR_GP_CNTRL, | |
354 | CSR_GP_CNTRL_REG_FLAG_XTAL_ON); | |
355 | return; | |
356 | } | |
357 | ||
358 | /* | |
359 | * Clear "disable persistence" to avoid LP XTAL resetting when | |
360 | * SHRD_HW_RST is applied in S3. | |
361 | */ | |
362 | iwl_clear_bits_prph(trans, APMG_PCIDEV_STT_REG, | |
363 | APMG_PCIDEV_STT_VAL_PERSIST_DIS); | |
364 | ||
365 | /* | |
366 | * Force APMG XTAL to be active to prevent its disabling by HW | |
367 | * caused by APMG idle state. | |
368 | */ | |
369 | apmg_xtal_cfg_reg = iwl_trans_pcie_read_shr(trans, | |
370 | SHR_APMG_XTAL_CFG_REG); | |
371 | iwl_trans_pcie_write_shr(trans, SHR_APMG_XTAL_CFG_REG, | |
372 | apmg_xtal_cfg_reg | | |
373 | SHR_APMG_XTAL_CFG_XTAL_ON_REQ); | |
374 | ||
375 | /* | |
376 | * Reset entire device again - do controller reset (results in | |
377 | * SHRD_HW_RST). Turn MAC off before proceeding. | |
378 | */ | |
379 | iwl_set_bit(trans, CSR_RESET, CSR_RESET_REG_FLAG_SW_RESET); | |
380 | ||
381 | udelay(10); | |
382 | ||
383 | /* Enable LP XTAL by indirect access through CSR */ | |
384 | apmg_gp1_reg = iwl_trans_pcie_read_shr(trans, SHR_APMG_GP1_REG); | |
385 | iwl_trans_pcie_write_shr(trans, SHR_APMG_GP1_REG, apmg_gp1_reg | | |
386 | SHR_APMG_GP1_WF_XTAL_LP_EN | | |
387 | SHR_APMG_GP1_CHICKEN_BIT_SELECT); | |
388 | ||
389 | /* Clear delay line clock power up */ | |
390 | dl_cfg_reg = iwl_trans_pcie_read_shr(trans, SHR_APMG_DL_CFG_REG); | |
391 | iwl_trans_pcie_write_shr(trans, SHR_APMG_DL_CFG_REG, dl_cfg_reg & | |
392 | ~SHR_APMG_DL_CFG_DL_CLOCK_POWER_UP); | |
393 | ||
394 | /* | |
395 | * Enable persistence mode to avoid LP XTAL resetting when | |
396 | * SHRD_HW_RST is applied in S3. | |
397 | */ | |
398 | iwl_set_bit(trans, CSR_HW_IF_CONFIG_REG, | |
399 | CSR_HW_IF_CONFIG_REG_PERSIST_MODE); | |
400 | ||
401 | /* | |
402 | * Clear "initialization complete" bit to move adapter from | |
403 | * D0A* (powered-up Active) --> D0U* (Uninitialized) state. | |
404 | */ | |
405 | iwl_clear_bit(trans, CSR_GP_CNTRL, | |
406 | CSR_GP_CNTRL_REG_FLAG_INIT_DONE); | |
407 | ||
408 | /* Activates XTAL resources monitor */ | |
409 | __iwl_trans_pcie_set_bit(trans, CSR_MONITOR_CFG_REG, | |
410 | CSR_MONITOR_XTAL_RESOURCES); | |
411 | ||
412 | /* Release XTAL ON request */ | |
413 | __iwl_trans_pcie_clear_bit(trans, CSR_GP_CNTRL, | |
414 | CSR_GP_CNTRL_REG_FLAG_XTAL_ON); | |
415 | udelay(10); | |
416 | ||
417 | /* Release APMG XTAL */ | |
418 | iwl_trans_pcie_write_shr(trans, SHR_APMG_XTAL_CFG_REG, | |
419 | apmg_xtal_cfg_reg & | |
420 | ~SHR_APMG_XTAL_CFG_XTAL_ON_REQ); | |
421 | } | |
422 | ||
7afe3705 | 423 | static int iwl_pcie_apm_stop_master(struct iwl_trans *trans) |
cc56feb2 EG |
424 | { |
425 | int ret = 0; | |
426 | ||
427 | /* stop device's busmaster DMA activity */ | |
428 | iwl_set_bit(trans, CSR_RESET, CSR_RESET_REG_FLAG_STOP_MASTER); | |
429 | ||
430 | ret = iwl_poll_bit(trans, CSR_RESET, | |
20d3b647 JB |
431 | CSR_RESET_REG_FLAG_MASTER_DISABLED, |
432 | CSR_RESET_REG_FLAG_MASTER_DISABLED, 100); | |
7f2ac8fb | 433 | if (ret < 0) |
cc56feb2 EG |
434 | IWL_WARN(trans, "Master Disable Timed Out, 100 usec\n"); |
435 | ||
436 | IWL_DEBUG_INFO(trans, "stop master\n"); | |
437 | ||
438 | return ret; | |
439 | } | |
440 | ||
7afe3705 | 441 | static void iwl_pcie_apm_stop(struct iwl_trans *trans) |
cc56feb2 EG |
442 | { |
443 | IWL_DEBUG_INFO(trans, "Stop card, put in low power state\n"); | |
444 | ||
eb7ff77e | 445 | clear_bit(STATUS_DEVICE_ENABLED, &trans->status); |
cc56feb2 EG |
446 | |
447 | /* Stop device's DMA activity */ | |
7afe3705 | 448 | iwl_pcie_apm_stop_master(trans); |
cc56feb2 | 449 | |
a812cba9 AB |
450 | if (trans->cfg->lp_xtal_workaround) { |
451 | iwl_pcie_apm_lp_xtal_enable(trans); | |
452 | return; | |
453 | } | |
454 | ||
cc56feb2 EG |
455 | /* Reset the entire device */ |
456 | iwl_set_bit(trans, CSR_RESET, CSR_RESET_REG_FLAG_SW_RESET); | |
457 | ||
458 | udelay(10); | |
459 | ||
460 | /* | |
461 | * Clear "initialization complete" bit to move adapter from | |
462 | * D0A* (powered-up Active) --> D0U* (Uninitialized) state. | |
463 | */ | |
464 | iwl_clear_bit(trans, CSR_GP_CNTRL, | |
465 | CSR_GP_CNTRL_REG_FLAG_INIT_DONE); | |
466 | } | |
467 | ||
7afe3705 | 468 | static int iwl_pcie_nic_init(struct iwl_trans *trans) |
392f8b78 | 469 | { |
7b11488f | 470 | struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans); |
392f8b78 EG |
471 | |
472 | /* nic_init */ | |
7b70bd63 | 473 | spin_lock(&trans_pcie->irq_lock); |
7afe3705 | 474 | iwl_pcie_apm_init(trans); |
392f8b78 | 475 | |
7b70bd63 | 476 | spin_unlock(&trans_pcie->irq_lock); |
392f8b78 | 477 | |
3073d8c0 EH |
478 | if (trans->cfg->device_family != IWL_DEVICE_FAMILY_8000) |
479 | iwl_pcie_set_pwr(trans, false); | |
392f8b78 | 480 | |
ecdb975c | 481 | iwl_op_mode_nic_config(trans->op_mode); |
392f8b78 EG |
482 | |
483 | /* Allocate the RX queue, or reset if it is already allocated */ | |
9805c446 | 484 | iwl_pcie_rx_init(trans); |
392f8b78 EG |
485 | |
486 | /* Allocate or reset and init all Tx and Command queues */ | |
f02831be | 487 | if (iwl_pcie_tx_init(trans)) |
392f8b78 EG |
488 | return -ENOMEM; |
489 | ||
035f7ff2 | 490 | if (trans->cfg->base_params->shadow_reg_enable) { |
392f8b78 | 491 | /* enable shadow regs in HW */ |
20d3b647 | 492 | iwl_set_bit(trans, CSR_MAC_SHADOW_REG_CTRL, 0x800FFFFF); |
d38069d1 | 493 | IWL_DEBUG_INFO(trans, "Enabling shadow registers in device\n"); |
392f8b78 EG |
494 | } |
495 | ||
392f8b78 EG |
496 | return 0; |
497 | } | |
498 | ||
499 | #define HW_READY_TIMEOUT (50) | |
500 | ||
501 | /* Note: returns poll_bit return value, which is >= 0 if success */ | |
7afe3705 | 502 | static int iwl_pcie_set_hw_ready(struct iwl_trans *trans) |
392f8b78 EG |
503 | { |
504 | int ret; | |
505 | ||
1042db2a | 506 | iwl_set_bit(trans, CSR_HW_IF_CONFIG_REG, |
20d3b647 | 507 | CSR_HW_IF_CONFIG_REG_BIT_NIC_READY); |
392f8b78 EG |
508 | |
509 | /* See if we got it */ | |
1042db2a | 510 | ret = iwl_poll_bit(trans, CSR_HW_IF_CONFIG_REG, |
20d3b647 JB |
511 | CSR_HW_IF_CONFIG_REG_BIT_NIC_READY, |
512 | CSR_HW_IF_CONFIG_REG_BIT_NIC_READY, | |
513 | HW_READY_TIMEOUT); | |
392f8b78 | 514 | |
6d8f6eeb | 515 | IWL_DEBUG_INFO(trans, "hardware%s ready\n", ret < 0 ? " not" : ""); |
392f8b78 EG |
516 | return ret; |
517 | } | |
518 | ||
519 | /* Note: returns standard 0/-ERROR code */ | |
7afe3705 | 520 | static int iwl_pcie_prepare_card_hw(struct iwl_trans *trans) |
392f8b78 EG |
521 | { |
522 | int ret; | |
289e5501 | 523 | int t = 0; |
501fd989 | 524 | int iter; |
392f8b78 | 525 | |
6d8f6eeb | 526 | IWL_DEBUG_INFO(trans, "iwl_trans_prepare_card_hw enter\n"); |
392f8b78 | 527 | |
7afe3705 | 528 | ret = iwl_pcie_set_hw_ready(trans); |
ebb7678d | 529 | /* If the card is ready, exit 0 */ |
392f8b78 EG |
530 | if (ret >= 0) |
531 | return 0; | |
532 | ||
501fd989 EG |
533 | for (iter = 0; iter < 10; iter++) { |
534 | /* If HW is not ready, prepare the conditions to check again */ | |
535 | iwl_set_bit(trans, CSR_HW_IF_CONFIG_REG, | |
536 | CSR_HW_IF_CONFIG_REG_PREPARE); | |
537 | ||
538 | do { | |
539 | ret = iwl_pcie_set_hw_ready(trans); | |
540 | if (ret >= 0) | |
541 | return 0; | |
392f8b78 | 542 | |
501fd989 EG |
543 | usleep_range(200, 1000); |
544 | t += 200; | |
545 | } while (t < 150000); | |
546 | msleep(25); | |
547 | } | |
392f8b78 | 548 | |
7f2ac8fb | 549 | IWL_ERR(trans, "Couldn't prepare the card\n"); |
392f8b78 | 550 | |
392f8b78 EG |
551 | return ret; |
552 | } | |
553 | ||
cf614297 EG |
554 | /* |
555 | * ucode | |
556 | */ | |
7afe3705 | 557 | static int iwl_pcie_load_firmware_chunk(struct iwl_trans *trans, u32 dst_addr, |
83f84d7b | 558 | dma_addr_t phy_addr, u32 byte_cnt) |
cf614297 | 559 | { |
13df1aab | 560 | struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans); |
cf614297 EG |
561 | int ret; |
562 | ||
13df1aab | 563 | trans_pcie->ucode_write_complete = false; |
cf614297 EG |
564 | |
565 | iwl_write_direct32(trans, | |
20d3b647 JB |
566 | FH_TCSR_CHNL_TX_CONFIG_REG(FH_SRVC_CHNL), |
567 | FH_TCSR_TX_CONFIG_REG_VAL_DMA_CHNL_PAUSE); | |
cf614297 EG |
568 | |
569 | iwl_write_direct32(trans, | |
20d3b647 JB |
570 | FH_SRVC_CHNL_SRAM_ADDR_REG(FH_SRVC_CHNL), |
571 | dst_addr); | |
cf614297 EG |
572 | |
573 | iwl_write_direct32(trans, | |
83f84d7b JB |
574 | FH_TFDIB_CTRL0_REG(FH_SRVC_CHNL), |
575 | phy_addr & FH_MEM_TFDIB_DRAM_ADDR_LSB_MSK); | |
cf614297 EG |
576 | |
577 | iwl_write_direct32(trans, | |
20d3b647 JB |
578 | FH_TFDIB_CTRL1_REG(FH_SRVC_CHNL), |
579 | (iwl_get_dma_hi_addr(phy_addr) | |
580 | << FH_MEM_TFDIB_REG1_ADDR_BITSHIFT) | byte_cnt); | |
cf614297 EG |
581 | |
582 | iwl_write_direct32(trans, | |
20d3b647 JB |
583 | FH_TCSR_CHNL_TX_BUF_STS_REG(FH_SRVC_CHNL), |
584 | 1 << FH_TCSR_CHNL_TX_BUF_STS_REG_POS_TB_NUM | | |
585 | 1 << FH_TCSR_CHNL_TX_BUF_STS_REG_POS_TB_IDX | | |
586 | FH_TCSR_CHNL_TX_BUF_STS_REG_VAL_TFDB_VALID); | |
cf614297 EG |
587 | |
588 | iwl_write_direct32(trans, | |
20d3b647 JB |
589 | FH_TCSR_CHNL_TX_CONFIG_REG(FH_SRVC_CHNL), |
590 | FH_TCSR_TX_CONFIG_REG_VAL_DMA_CHNL_ENABLE | | |
591 | FH_TCSR_TX_CONFIG_REG_VAL_DMA_CREDIT_DISABLE | | |
592 | FH_TCSR_TX_CONFIG_REG_VAL_CIRQ_HOST_ENDTFD); | |
cf614297 | 593 | |
13df1aab JB |
594 | ret = wait_event_timeout(trans_pcie->ucode_write_waitq, |
595 | trans_pcie->ucode_write_complete, 5 * HZ); | |
cf614297 | 596 | if (!ret) { |
83f84d7b | 597 | IWL_ERR(trans, "Failed to load firmware chunk!\n"); |
cf614297 EG |
598 | return -ETIMEDOUT; |
599 | } | |
600 | ||
601 | return 0; | |
602 | } | |
603 | ||
7afe3705 | 604 | static int iwl_pcie_load_section(struct iwl_trans *trans, u8 section_num, |
83f84d7b | 605 | const struct fw_desc *section) |
cf614297 | 606 | { |
83f84d7b JB |
607 | u8 *v_addr; |
608 | dma_addr_t p_addr; | |
c571573a | 609 | u32 offset, chunk_sz = section->len; |
cf614297 EG |
610 | int ret = 0; |
611 | ||
83f84d7b JB |
612 | IWL_DEBUG_FW(trans, "[%d] uCode section being loaded...\n", |
613 | section_num); | |
614 | ||
c571573a EG |
615 | v_addr = dma_alloc_coherent(trans->dev, chunk_sz, &p_addr, |
616 | GFP_KERNEL | __GFP_NOWARN); | |
617 | if (!v_addr) { | |
618 | IWL_DEBUG_INFO(trans, "Falling back to small chunks of DMA\n"); | |
619 | chunk_sz = PAGE_SIZE; | |
620 | v_addr = dma_alloc_coherent(trans->dev, chunk_sz, | |
621 | &p_addr, GFP_KERNEL); | |
622 | if (!v_addr) | |
623 | return -ENOMEM; | |
624 | } | |
83f84d7b | 625 | |
c571573a | 626 | for (offset = 0; offset < section->len; offset += chunk_sz) { |
83f84d7b JB |
627 | u32 copy_size; |
628 | ||
c571573a | 629 | copy_size = min_t(u32, chunk_sz, section->len - offset); |
cf614297 | 630 | |
83f84d7b | 631 | memcpy(v_addr, (u8 *)section->data + offset, copy_size); |
7afe3705 EG |
632 | ret = iwl_pcie_load_firmware_chunk(trans, |
633 | section->offset + offset, | |
634 | p_addr, copy_size); | |
83f84d7b JB |
635 | if (ret) { |
636 | IWL_ERR(trans, | |
637 | "Could not load the [%d] uCode section\n", | |
638 | section_num); | |
639 | break; | |
6dfa8d01 | 640 | } |
83f84d7b JB |
641 | } |
642 | ||
c571573a | 643 | dma_free_coherent(trans->dev, chunk_sz, v_addr, p_addr); |
83f84d7b JB |
644 | return ret; |
645 | } | |
646 | ||
189fa2fa EH |
647 | static int iwl_pcie_load_cpu_secured_sections(struct iwl_trans *trans, |
648 | const struct fw_img *image, | |
034846cf EH |
649 | int cpu, |
650 | int *first_ucode_section) | |
e2d6f4e7 EH |
651 | { |
652 | int shift_param; | |
189fa2fa | 653 | int i, ret = 0; |
034846cf | 654 | u32 last_read_idx = 0; |
e2d6f4e7 EH |
655 | |
656 | if (cpu == 1) { | |
657 | shift_param = 0; | |
034846cf | 658 | *first_ucode_section = 0; |
e2d6f4e7 EH |
659 | } else { |
660 | shift_param = 16; | |
034846cf | 661 | (*first_ucode_section)++; |
e2d6f4e7 EH |
662 | } |
663 | ||
034846cf EH |
664 | for (i = *first_ucode_section; i < IWL_UCODE_SECTION_MAX; i++) { |
665 | last_read_idx = i; | |
666 | ||
667 | if (!image->sec[i].data || | |
668 | image->sec[i].offset == CPU1_CPU2_SEPARATOR_SECTION) { | |
669 | IWL_DEBUG_FW(trans, | |
670 | "Break since Data not valid or Empty section, sec = %d\n", | |
671 | i); | |
189fa2fa | 672 | break; |
034846cf EH |
673 | } |
674 | ||
675 | if (i == (*first_ucode_section) + 1) | |
189fa2fa EH |
676 | /* set CPU to started */ |
677 | iwl_set_bits_prph(trans, | |
678 | CSR_UCODE_LOAD_STATUS_ADDR, | |
679 | LMPM_CPU_HDRS_LOADING_COMPLETED | |
680 | << shift_param); | |
e2d6f4e7 | 681 | |
189fa2fa EH |
682 | ret = iwl_pcie_load_section(trans, i, &image->sec[i]); |
683 | if (ret) | |
684 | return ret; | |
e2d6f4e7 | 685 | } |
189fa2fa EH |
686 | /* image loading complete */ |
687 | iwl_set_bits_prph(trans, | |
688 | CSR_UCODE_LOAD_STATUS_ADDR, | |
689 | LMPM_CPU_UCODE_LOADING_COMPLETED << shift_param); | |
e2d6f4e7 | 690 | |
034846cf EH |
691 | *first_ucode_section = last_read_idx; |
692 | ||
189fa2fa EH |
693 | return 0; |
694 | } | |
e2d6f4e7 | 695 | |
189fa2fa EH |
696 | static int iwl_pcie_load_cpu_sections(struct iwl_trans *trans, |
697 | const struct fw_img *image, | |
034846cf EH |
698 | int cpu, |
699 | int *first_ucode_section) | |
189fa2fa EH |
700 | { |
701 | int shift_param; | |
189fa2fa | 702 | int i, ret = 0; |
034846cf | 703 | u32 last_read_idx = 0; |
189fa2fa EH |
704 | |
705 | if (cpu == 1) { | |
706 | shift_param = 0; | |
034846cf | 707 | *first_ucode_section = 0; |
189fa2fa EH |
708 | } else { |
709 | shift_param = 16; | |
034846cf | 710 | (*first_ucode_section)++; |
189fa2fa EH |
711 | } |
712 | ||
034846cf EH |
713 | for (i = *first_ucode_section; i < IWL_UCODE_SECTION_MAX; i++) { |
714 | last_read_idx = i; | |
715 | ||
716 | if (!image->sec[i].data || | |
717 | image->sec[i].offset == CPU1_CPU2_SEPARATOR_SECTION) { | |
718 | IWL_DEBUG_FW(trans, | |
719 | "Break since Data not valid or Empty section, sec = %d\n", | |
720 | i); | |
189fa2fa | 721 | break; |
034846cf EH |
722 | } |
723 | ||
189fa2fa EH |
724 | ret = iwl_pcie_load_section(trans, i, &image->sec[i]); |
725 | if (ret) | |
726 | return ret; | |
e2d6f4e7 EH |
727 | } |
728 | ||
189fa2fa EH |
729 | if (trans->cfg->device_family == IWL_DEVICE_FAMILY_8000) |
730 | iwl_set_bits_prph(trans, | |
731 | CSR_UCODE_LOAD_STATUS_ADDR, | |
732 | (LMPM_CPU_UCODE_LOADING_COMPLETED | | |
733 | LMPM_CPU_HDRS_LOADING_COMPLETED | | |
734 | LMPM_CPU_UCODE_LOADING_STARTED) << | |
735 | shift_param); | |
736 | ||
034846cf EH |
737 | *first_ucode_section = last_read_idx; |
738 | ||
e2d6f4e7 EH |
739 | return 0; |
740 | } | |
741 | ||
7afe3705 | 742 | static int iwl_pcie_load_given_ucode(struct iwl_trans *trans, |
0692fe41 | 743 | const struct fw_img *image) |
cf614297 | 744 | { |
c2d20201 | 745 | struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans); |
189fa2fa | 746 | int ret = 0; |
034846cf | 747 | int first_ucode_section; |
cf614297 | 748 | |
e2d6f4e7 EH |
749 | IWL_DEBUG_FW(trans, |
750 | "working with %s image\n", | |
751 | image->is_secure ? "Secured" : "Non Secured"); | |
752 | IWL_DEBUG_FW(trans, | |
753 | "working with %s CPU\n", | |
754 | image->is_dual_cpus ? "Dual" : "Single"); | |
755 | ||
756 | /* configure the ucode to be ready to get the secured image */ | |
757 | if (image->is_secure) { | |
758 | /* set secure boot inspector addresses */ | |
189fa2fa EH |
759 | iwl_write_prph(trans, |
760 | LMPM_SECURE_INSPECTOR_CODE_ADDR, | |
761 | LMPM_SECURE_INSPECTOR_CODE_MEM_SPACE); | |
e2d6f4e7 | 762 | |
189fa2fa EH |
763 | iwl_write_prph(trans, |
764 | LMPM_SECURE_INSPECTOR_DATA_ADDR, | |
765 | LMPM_SECURE_INSPECTOR_DATA_MEM_SPACE); | |
e2d6f4e7 | 766 | |
189fa2fa EH |
767 | /* set CPU1 header address */ |
768 | iwl_write_prph(trans, | |
769 | LMPM_SECURE_UCODE_LOAD_CPU1_HDR_ADDR, | |
770 | LMPM_SECURE_CPU1_HDR_MEM_SPACE); | |
771 | ||
772 | /* load to FW the binary Secured sections of CPU1 */ | |
034846cf EH |
773 | ret = iwl_pcie_load_cpu_secured_sections(trans, image, 1, |
774 | &first_ucode_section); | |
2d1c0044 JB |
775 | if (ret) |
776 | return ret; | |
cf614297 | 777 | |
189fa2fa EH |
778 | } else { |
779 | /* load to FW the binary Non secured sections of CPU1 */ | |
034846cf EH |
780 | ret = iwl_pcie_load_cpu_sections(trans, image, 1, |
781 | &first_ucode_section); | |
e2d6f4e7 EH |
782 | if (ret) |
783 | return ret; | |
e2d6f4e7 EH |
784 | } |
785 | ||
786 | if (image->is_dual_cpus) { | |
189fa2fa EH |
787 | /* set CPU2 header address */ |
788 | iwl_write_prph(trans, | |
789 | LMPM_SECURE_UCODE_LOAD_CPU2_HDR_ADDR, | |
790 | LMPM_SECURE_CPU2_HDR_MEM_SPACE); | |
e2d6f4e7 | 791 | |
189fa2fa EH |
792 | /* load to FW the binary sections of CPU2 */ |
793 | if (image->is_secure) | |
034846cf EH |
794 | ret = iwl_pcie_load_cpu_secured_sections( |
795 | trans, image, 2, | |
796 | &first_ucode_section); | |
189fa2fa | 797 | else |
034846cf EH |
798 | ret = iwl_pcie_load_cpu_sections(trans, image, 2, |
799 | &first_ucode_section); | |
189fa2fa EH |
800 | if (ret) |
801 | return ret; | |
e2d6f4e7 | 802 | } |
cf614297 | 803 | |
c2d20201 EG |
804 | /* supported for 7000 only for the moment */ |
805 | if (iwlwifi_mod_params.fw_monitor && | |
806 | trans->cfg->device_family == IWL_DEVICE_FAMILY_7000) { | |
807 | iwl_pcie_alloc_fw_monitor(trans); | |
808 | ||
809 | if (trans_pcie->fw_mon_size) { | |
810 | iwl_write_prph(trans, MON_BUFF_BASE_ADDR, | |
811 | trans_pcie->fw_mon_phys >> 4); | |
812 | iwl_write_prph(trans, MON_BUFF_END_ADDR, | |
813 | (trans_pcie->fw_mon_phys + | |
814 | trans_pcie->fw_mon_size) >> 4); | |
815 | } | |
816 | } | |
817 | ||
e12ba844 EH |
818 | /* release CPU reset */ |
819 | if (trans->cfg->device_family == IWL_DEVICE_FAMILY_8000) | |
820 | iwl_write_prph(trans, RELEASE_CPU_RESET, RELEASE_CPU_RESET_BIT); | |
821 | else | |
822 | iwl_write32(trans, CSR_RESET, 0); | |
823 | ||
189fa2fa EH |
824 | if (image->is_secure) { |
825 | /* wait for image verification to complete */ | |
826 | ret = iwl_poll_prph_bit(trans, | |
827 | LMPM_SECURE_BOOT_CPU1_STATUS_ADDR, | |
828 | LMPM_SECURE_BOOT_STATUS_SUCCESS, | |
829 | LMPM_SECURE_BOOT_STATUS_SUCCESS, | |
830 | LMPM_SECURE_TIME_OUT); | |
831 | ||
832 | if (ret < 0) { | |
833 | IWL_ERR(trans, "Time out on secure boot process\n"); | |
834 | return ret; | |
835 | } | |
836 | } | |
837 | ||
cf614297 EG |
838 | return 0; |
839 | } | |
840 | ||
0692fe41 | 841 | static int iwl_trans_pcie_start_fw(struct iwl_trans *trans, |
6ae02f3e | 842 | const struct fw_img *fw, bool run_in_rfkill) |
392f8b78 EG |
843 | { |
844 | int ret; | |
c9eec95c | 845 | bool hw_rfkill; |
392f8b78 | 846 | |
496bab39 | 847 | /* This may fail if AMT took ownership of the device */ |
7afe3705 | 848 | if (iwl_pcie_prepare_card_hw(trans)) { |
6d8f6eeb | 849 | IWL_WARN(trans, "Exit HW not ready\n"); |
392f8b78 EG |
850 | return -EIO; |
851 | } | |
852 | ||
8c46bb70 EG |
853 | iwl_enable_rfkill_int(trans); |
854 | ||
392f8b78 | 855 | /* If platform's RF_KILL switch is NOT set to KILL */ |
8d425517 | 856 | hw_rfkill = iwl_is_rfkill_set(trans); |
4620020b | 857 | if (hw_rfkill) |
eb7ff77e | 858 | set_bit(STATUS_RFKILL, &trans->status); |
4620020b | 859 | else |
eb7ff77e | 860 | clear_bit(STATUS_RFKILL, &trans->status); |
14cfca71 | 861 | iwl_trans_pcie_rf_kill(trans, hw_rfkill); |
6ae02f3e | 862 | if (hw_rfkill && !run_in_rfkill) |
392f8b78 | 863 | return -ERFKILL; |
392f8b78 | 864 | |
1042db2a | 865 | iwl_write32(trans, CSR_INT, 0xFFFFFFFF); |
392f8b78 | 866 | |
7afe3705 | 867 | ret = iwl_pcie_nic_init(trans); |
392f8b78 | 868 | if (ret) { |
6d8f6eeb | 869 | IWL_ERR(trans, "Unable to init nic\n"); |
392f8b78 EG |
870 | return ret; |
871 | } | |
872 | ||
873 | /* make sure rfkill handshake bits are cleared */ | |
1042db2a EG |
874 | iwl_write32(trans, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL); |
875 | iwl_write32(trans, CSR_UCODE_DRV_GP1_CLR, | |
392f8b78 EG |
876 | CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED); |
877 | ||
878 | /* clear (again), then enable host interrupts */ | |
1042db2a | 879 | iwl_write32(trans, CSR_INT, 0xFFFFFFFF); |
6d8f6eeb | 880 | iwl_enable_interrupts(trans); |
392f8b78 EG |
881 | |
882 | /* really make sure rfkill handshake bits are cleared */ | |
1042db2a EG |
883 | iwl_write32(trans, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL); |
884 | iwl_write32(trans, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL); | |
392f8b78 | 885 | |
cf614297 | 886 | /* Load the given image to the HW */ |
7afe3705 | 887 | return iwl_pcie_load_given_ucode(trans, fw); |
b3c2ce13 EG |
888 | } |
889 | ||
adca1235 | 890 | static void iwl_trans_pcie_fw_alive(struct iwl_trans *trans, u32 scd_addr) |
ed6a3803 | 891 | { |
990aa6d7 | 892 | iwl_pcie_reset_ict(trans); |
f02831be | 893 | iwl_pcie_tx_start(trans, scd_addr); |
c170b867 EG |
894 | } |
895 | ||
43e58856 | 896 | static void iwl_trans_pcie_stop_device(struct iwl_trans *trans) |
ae2c30bf | 897 | { |
43e58856 | 898 | struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans); |
3dc3374f EG |
899 | bool hw_rfkill, was_hw_rfkill; |
900 | ||
901 | was_hw_rfkill = iwl_is_rfkill_set(trans); | |
ae2c30bf | 902 | |
43e58856 | 903 | /* tell the device to stop sending interrupts */ |
7b70bd63 | 904 | spin_lock(&trans_pcie->irq_lock); |
ae2c30bf | 905 | iwl_disable_interrupts(trans); |
7b70bd63 | 906 | spin_unlock(&trans_pcie->irq_lock); |
ae2c30bf | 907 | |
ab6cf8e8 | 908 | /* device going down, Stop using ICT table */ |
990aa6d7 | 909 | iwl_pcie_disable_ict(trans); |
ab6cf8e8 EG |
910 | |
911 | /* | |
912 | * If a HW restart happens during firmware loading, | |
913 | * then the firmware loading might call this function | |
914 | * and later it might be called again due to the | |
915 | * restart. So don't process again if the device is | |
916 | * already dead. | |
917 | */ | |
eb7ff77e | 918 | if (test_bit(STATUS_DEVICE_ENABLED, &trans->status)) { |
f02831be | 919 | iwl_pcie_tx_stop(trans); |
9805c446 | 920 | iwl_pcie_rx_stop(trans); |
6379103e | 921 | |
ab6cf8e8 | 922 | /* Power-down device's busmaster DMA clocks */ |
1042db2a | 923 | iwl_write_prph(trans, APMG_CLK_DIS_REG, |
ab6cf8e8 EG |
924 | APMG_CLK_VAL_DMA_CLK_RQT); |
925 | udelay(5); | |
926 | } | |
927 | ||
928 | /* Make sure (redundant) we've released our request to stay awake */ | |
1042db2a | 929 | iwl_clear_bit(trans, CSR_GP_CNTRL, |
20d3b647 | 930 | CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ); |
ab6cf8e8 EG |
931 | |
932 | /* Stop the device, and put it in low power state */ | |
7afe3705 | 933 | iwl_pcie_apm_stop(trans); |
43e58856 EG |
934 | |
935 | /* Upon stop, the APM issues an interrupt if HW RF kill is set. | |
936 | * Clean again the interrupt here | |
937 | */ | |
7b70bd63 | 938 | spin_lock(&trans_pcie->irq_lock); |
43e58856 | 939 | iwl_disable_interrupts(trans); |
7b70bd63 | 940 | spin_unlock(&trans_pcie->irq_lock); |
43e58856 | 941 | |
43e58856 | 942 | /* stop and reset the on-board processor */ |
1042db2a | 943 | iwl_write32(trans, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET); |
74fda971 DF |
944 | |
945 | /* clear all status bits */ | |
eb7ff77e AN |
946 | clear_bit(STATUS_SYNC_HCMD_ACTIVE, &trans->status); |
947 | clear_bit(STATUS_INT_ENABLED, &trans->status); | |
948 | clear_bit(STATUS_DEVICE_ENABLED, &trans->status); | |
949 | clear_bit(STATUS_TPOWER_PMI, &trans->status); | |
950 | clear_bit(STATUS_RFKILL, &trans->status); | |
a4082843 AN |
951 | |
952 | /* | |
953 | * Even if we stop the HW, we still want the RF kill | |
954 | * interrupt | |
955 | */ | |
956 | iwl_enable_rfkill_int(trans); | |
957 | ||
958 | /* | |
959 | * Check again since the RF kill state may have changed while | |
960 | * all the interrupts were disabled, in this case we couldn't | |
961 | * receive the RF kill interrupt and update the state in the | |
962 | * op_mode. | |
3dc3374f EG |
963 | * Don't call the op_mode if the rkfill state hasn't changed. |
964 | * This allows the op_mode to call stop_device from the rfkill | |
965 | * notification without endless recursion. Under very rare | |
966 | * circumstances, we might have a small recursion if the rfkill | |
967 | * state changed exactly now while we were called from stop_device. | |
968 | * This is very unlikely but can happen and is supported. | |
a4082843 AN |
969 | */ |
970 | hw_rfkill = iwl_is_rfkill_set(trans); | |
971 | if (hw_rfkill) | |
eb7ff77e | 972 | set_bit(STATUS_RFKILL, &trans->status); |
a4082843 | 973 | else |
eb7ff77e | 974 | clear_bit(STATUS_RFKILL, &trans->status); |
3dc3374f | 975 | if (hw_rfkill != was_hw_rfkill) |
14cfca71 JB |
976 | iwl_trans_pcie_rf_kill(trans, hw_rfkill); |
977 | } | |
978 | ||
979 | void iwl_trans_pcie_rf_kill(struct iwl_trans *trans, bool state) | |
980 | { | |
981 | if (iwl_op_mode_hw_rf_kill(trans->op_mode, state)) | |
982 | iwl_trans_pcie_stop_device(trans); | |
ab6cf8e8 EG |
983 | } |
984 | ||
debff618 | 985 | static void iwl_trans_pcie_d3_suspend(struct iwl_trans *trans, bool test) |
2dd4f9f7 | 986 | { |
2dd4f9f7 | 987 | iwl_disable_interrupts(trans); |
debff618 JB |
988 | |
989 | /* | |
990 | * in testing mode, the host stays awake and the | |
991 | * hardware won't be reset (not even partially) | |
992 | */ | |
993 | if (test) | |
994 | return; | |
995 | ||
ddaf5a5b JB |
996 | iwl_pcie_disable_ict(trans); |
997 | ||
2dd4f9f7 JB |
998 | iwl_clear_bit(trans, CSR_GP_CNTRL, |
999 | CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ); | |
ddaf5a5b JB |
1000 | iwl_clear_bit(trans, CSR_GP_CNTRL, |
1001 | CSR_GP_CNTRL_REG_FLAG_INIT_DONE); | |
1002 | ||
1003 | /* | |
1004 | * reset TX queues -- some of their registers reset during S3 | |
1005 | * so if we don't reset everything here the D3 image would try | |
1006 | * to execute some invalid memory upon resume | |
1007 | */ | |
1008 | iwl_trans_pcie_tx_reset(trans); | |
1009 | ||
1010 | iwl_pcie_set_pwr(trans, true); | |
1011 | } | |
1012 | ||
1013 | static int iwl_trans_pcie_d3_resume(struct iwl_trans *trans, | |
debff618 JB |
1014 | enum iwl_d3_status *status, |
1015 | bool test) | |
ddaf5a5b JB |
1016 | { |
1017 | u32 val; | |
1018 | int ret; | |
1019 | ||
debff618 JB |
1020 | if (test) { |
1021 | iwl_enable_interrupts(trans); | |
1022 | *status = IWL_D3_STATUS_ALIVE; | |
1023 | return 0; | |
1024 | } | |
1025 | ||
ddaf5a5b JB |
1026 | iwl_pcie_set_pwr(trans, false); |
1027 | ||
1028 | val = iwl_read32(trans, CSR_RESET); | |
1029 | if (val & CSR_RESET_REG_FLAG_NEVO_RESET) { | |
1030 | *status = IWL_D3_STATUS_RESET; | |
1031 | return 0; | |
1032 | } | |
1033 | ||
1034 | /* | |
1035 | * Also enables interrupts - none will happen as the device doesn't | |
1036 | * know we're waking it up, only when the opmode actually tells it | |
1037 | * after this call. | |
1038 | */ | |
1039 | iwl_pcie_reset_ict(trans); | |
1040 | ||
1041 | iwl_set_bit(trans, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ); | |
1042 | iwl_set_bit(trans, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_INIT_DONE); | |
1043 | ||
1044 | ret = iwl_poll_bit(trans, CSR_GP_CNTRL, | |
1045 | CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY, | |
1046 | CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY, | |
1047 | 25000); | |
7f2ac8fb | 1048 | if (ret < 0) { |
ddaf5a5b JB |
1049 | IWL_ERR(trans, "Failed to resume the device (mac ready)\n"); |
1050 | return ret; | |
1051 | } | |
1052 | ||
1053 | iwl_trans_pcie_tx_reset(trans); | |
1054 | ||
1055 | ret = iwl_pcie_rx_init(trans); | |
1056 | if (ret) { | |
1057 | IWL_ERR(trans, "Failed to resume the device (RX reset)\n"); | |
1058 | return ret; | |
1059 | } | |
1060 | ||
ddaf5a5b JB |
1061 | *status = IWL_D3_STATUS_ALIVE; |
1062 | return 0; | |
2dd4f9f7 JB |
1063 | } |
1064 | ||
57a1dc89 | 1065 | static int iwl_trans_pcie_start_hw(struct iwl_trans *trans) |
e6bb4c9c | 1066 | { |
c9eec95c | 1067 | bool hw_rfkill; |
a8b691e6 | 1068 | int err; |
e6bb4c9c | 1069 | |
7afe3705 | 1070 | err = iwl_pcie_prepare_card_hw(trans); |
ebb7678d | 1071 | if (err) { |
d6f1c316 | 1072 | IWL_ERR(trans, "Error while preparing HW: %d\n", err); |
a8b691e6 | 1073 | return err; |
ebb7678d | 1074 | } |
a6c684ee | 1075 | |
2997494f | 1076 | /* Reset the entire device */ |
ce836c76 | 1077 | iwl_write32(trans, CSR_RESET, CSR_RESET_REG_FLAG_SW_RESET); |
2997494f EG |
1078 | |
1079 | usleep_range(10, 15); | |
1080 | ||
7afe3705 | 1081 | iwl_pcie_apm_init(trans); |
a6c684ee | 1082 | |
226c02ca EG |
1083 | /* From now on, the op_mode will be kept updated about RF kill state */ |
1084 | iwl_enable_rfkill_int(trans); | |
1085 | ||
8d425517 | 1086 | hw_rfkill = iwl_is_rfkill_set(trans); |
4620020b | 1087 | if (hw_rfkill) |
eb7ff77e | 1088 | set_bit(STATUS_RFKILL, &trans->status); |
4620020b | 1089 | else |
eb7ff77e | 1090 | clear_bit(STATUS_RFKILL, &trans->status); |
14cfca71 | 1091 | iwl_trans_pcie_rf_kill(trans, hw_rfkill); |
d48e2074 | 1092 | |
a8b691e6 | 1093 | return 0; |
e6bb4c9c EG |
1094 | } |
1095 | ||
a4082843 | 1096 | static void iwl_trans_pcie_op_mode_leave(struct iwl_trans *trans) |
cc56feb2 | 1097 | { |
20d3b647 | 1098 | struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans); |
d23f78e6 | 1099 | |
a4082843 | 1100 | /* disable interrupts - don't enable HW RF kill interrupt */ |
7b70bd63 | 1101 | spin_lock(&trans_pcie->irq_lock); |
ee7d737c | 1102 | iwl_disable_interrupts(trans); |
7b70bd63 | 1103 | spin_unlock(&trans_pcie->irq_lock); |
ee7d737c | 1104 | |
7afe3705 | 1105 | iwl_pcie_apm_stop(trans); |
cc56feb2 | 1106 | |
7b70bd63 | 1107 | spin_lock(&trans_pcie->irq_lock); |
218733cf | 1108 | iwl_disable_interrupts(trans); |
7b70bd63 | 1109 | spin_unlock(&trans_pcie->irq_lock); |
1df06bdc | 1110 | |
8d96bb61 | 1111 | iwl_pcie_disable_ict(trans); |
cc56feb2 EG |
1112 | } |
1113 | ||
03905495 EG |
1114 | static void iwl_trans_pcie_write8(struct iwl_trans *trans, u32 ofs, u8 val) |
1115 | { | |
05f5b97e | 1116 | writeb(val, IWL_TRANS_GET_PCIE_TRANS(trans)->hw_base + ofs); |
03905495 EG |
1117 | } |
1118 | ||
1119 | static void iwl_trans_pcie_write32(struct iwl_trans *trans, u32 ofs, u32 val) | |
1120 | { | |
05f5b97e | 1121 | writel(val, IWL_TRANS_GET_PCIE_TRANS(trans)->hw_base + ofs); |
03905495 EG |
1122 | } |
1123 | ||
1124 | static u32 iwl_trans_pcie_read32(struct iwl_trans *trans, u32 ofs) | |
1125 | { | |
05f5b97e | 1126 | return readl(IWL_TRANS_GET_PCIE_TRANS(trans)->hw_base + ofs); |
03905495 EG |
1127 | } |
1128 | ||
6a06b6c1 EG |
1129 | static u32 iwl_trans_pcie_read_prph(struct iwl_trans *trans, u32 reg) |
1130 | { | |
f9477c17 AP |
1131 | iwl_trans_pcie_write32(trans, HBUS_TARG_PRPH_RADDR, |
1132 | ((reg & 0x000FFFFF) | (3 << 24))); | |
6a06b6c1 EG |
1133 | return iwl_trans_pcie_read32(trans, HBUS_TARG_PRPH_RDAT); |
1134 | } | |
1135 | ||
1136 | static void iwl_trans_pcie_write_prph(struct iwl_trans *trans, u32 addr, | |
1137 | u32 val) | |
1138 | { | |
1139 | iwl_trans_pcie_write32(trans, HBUS_TARG_PRPH_WADDR, | |
f9477c17 | 1140 | ((addr & 0x000FFFFF) | (3 << 24))); |
6a06b6c1 EG |
1141 | iwl_trans_pcie_write32(trans, HBUS_TARG_PRPH_WDAT, val); |
1142 | } | |
1143 | ||
f14d6b39 JB |
1144 | static int iwl_pcie_dummy_napi_poll(struct napi_struct *napi, int budget) |
1145 | { | |
1146 | WARN_ON(1); | |
1147 | return 0; | |
1148 | } | |
1149 | ||
c6f600fc | 1150 | static void iwl_trans_pcie_configure(struct iwl_trans *trans, |
9eae88fa | 1151 | const struct iwl_trans_config *trans_cfg) |
c6f600fc MV |
1152 | { |
1153 | struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans); | |
1154 | ||
1155 | trans_pcie->cmd_queue = trans_cfg->cmd_queue; | |
b04db9ac | 1156 | trans_pcie->cmd_fifo = trans_cfg->cmd_fifo; |
d663ee73 JB |
1157 | if (WARN_ON(trans_cfg->n_no_reclaim_cmds > MAX_NO_RECLAIM_CMDS)) |
1158 | trans_pcie->n_no_reclaim_cmds = 0; | |
1159 | else | |
1160 | trans_pcie->n_no_reclaim_cmds = trans_cfg->n_no_reclaim_cmds; | |
1161 | if (trans_pcie->n_no_reclaim_cmds) | |
1162 | memcpy(trans_pcie->no_reclaim_cmds, trans_cfg->no_reclaim_cmds, | |
1163 | trans_pcie->n_no_reclaim_cmds * sizeof(u8)); | |
9eae88fa | 1164 | |
b2cf410c JB |
1165 | trans_pcie->rx_buf_size_8k = trans_cfg->rx_buf_size_8k; |
1166 | if (trans_pcie->rx_buf_size_8k) | |
1167 | trans_pcie->rx_page_order = get_order(8 * 1024); | |
1168 | else | |
1169 | trans_pcie->rx_page_order = get_order(4 * 1024); | |
7c5ba4a8 JB |
1170 | |
1171 | trans_pcie->wd_timeout = | |
1172 | msecs_to_jiffies(trans_cfg->queue_watchdog_timeout); | |
d9fb6465 JB |
1173 | |
1174 | trans_pcie->command_names = trans_cfg->command_names; | |
046db346 | 1175 | trans_pcie->bc_table_dword = trans_cfg->bc_table_dword; |
3a736bcb | 1176 | trans_pcie->scd_set_active = trans_cfg->scd_set_active; |
f14d6b39 JB |
1177 | |
1178 | /* Initialize NAPI here - it should be before registering to mac80211 | |
1179 | * in the opmode but after the HW struct is allocated. | |
1180 | * As this function may be called again in some corner cases don't | |
1181 | * do anything if NAPI was already initialized. | |
1182 | */ | |
1183 | if (!trans_pcie->napi.poll && trans->op_mode->ops->napi_add) { | |
1184 | init_dummy_netdev(&trans_pcie->napi_dev); | |
1185 | iwl_op_mode_napi_add(trans->op_mode, &trans_pcie->napi, | |
1186 | &trans_pcie->napi_dev, | |
1187 | iwl_pcie_dummy_napi_poll, 64); | |
1188 | } | |
c6f600fc MV |
1189 | } |
1190 | ||
d1ff5253 | 1191 | void iwl_trans_pcie_free(struct iwl_trans *trans) |
34c1b7ba | 1192 | { |
20d3b647 | 1193 | struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans); |
a42a1844 | 1194 | |
0aa86df6 | 1195 | synchronize_irq(trans_pcie->pci_dev->irq); |
0aa86df6 | 1196 | |
f02831be | 1197 | iwl_pcie_tx_free(trans); |
9805c446 | 1198 | iwl_pcie_rx_free(trans); |
6379103e | 1199 | |
a8b691e6 JB |
1200 | free_irq(trans_pcie->pci_dev->irq, trans); |
1201 | iwl_pcie_free_ict(trans); | |
a42a1844 EG |
1202 | |
1203 | pci_disable_msi(trans_pcie->pci_dev); | |
05f5b97e | 1204 | iounmap(trans_pcie->hw_base); |
a42a1844 EG |
1205 | pci_release_regions(trans_pcie->pci_dev); |
1206 | pci_disable_device(trans_pcie->pci_dev); | |
59c647b6 | 1207 | kmem_cache_destroy(trans->dev_cmd_pool); |
a42a1844 | 1208 | |
f14d6b39 JB |
1209 | if (trans_pcie->napi.poll) |
1210 | netif_napi_del(&trans_pcie->napi); | |
1211 | ||
c2d20201 EG |
1212 | iwl_pcie_free_fw_monitor(trans); |
1213 | ||
6d8f6eeb | 1214 | kfree(trans); |
34c1b7ba EG |
1215 | } |
1216 | ||
47107e84 DF |
1217 | static void iwl_trans_pcie_set_pmi(struct iwl_trans *trans, bool state) |
1218 | { | |
47107e84 | 1219 | if (state) |
eb7ff77e | 1220 | set_bit(STATUS_TPOWER_PMI, &trans->status); |
47107e84 | 1221 | else |
eb7ff77e | 1222 | clear_bit(STATUS_TPOWER_PMI, &trans->status); |
47107e84 DF |
1223 | } |
1224 | ||
e56b04ef LE |
1225 | static bool iwl_trans_pcie_grab_nic_access(struct iwl_trans *trans, bool silent, |
1226 | unsigned long *flags) | |
7a65d170 EG |
1227 | { |
1228 | int ret; | |
cfb4e624 JB |
1229 | struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans); |
1230 | ||
1231 | spin_lock_irqsave(&trans_pcie->reg_lock, *flags); | |
7a65d170 | 1232 | |
b9439491 EG |
1233 | if (trans_pcie->cmd_in_flight) |
1234 | goto out; | |
1235 | ||
7a65d170 | 1236 | /* this bit wakes up the NIC */ |
e139dc4a LE |
1237 | __iwl_trans_pcie_set_bit(trans, CSR_GP_CNTRL, |
1238 | CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ); | |
7a65d170 EG |
1239 | |
1240 | /* | |
1241 | * These bits say the device is running, and should keep running for | |
1242 | * at least a short while (at least as long as MAC_ACCESS_REQ stays 1), | |
1243 | * but they do not indicate that embedded SRAM is restored yet; | |
1244 | * 3945 and 4965 have volatile SRAM, and must save/restore contents | |
1245 | * to/from host DRAM when sleeping/waking for power-saving. | |
1246 | * Each direction takes approximately 1/4 millisecond; with this | |
1247 | * overhead, it's a good idea to grab and hold MAC_ACCESS_REQUEST if a | |
1248 | * series of register accesses are expected (e.g. reading Event Log), | |
1249 | * to keep device from sleeping. | |
1250 | * | |
1251 | * CSR_UCODE_DRV_GP1 register bit MAC_SLEEP == 0 indicates that | |
1252 | * SRAM is okay/restored. We don't check that here because this call | |
1253 | * is just for hardware register access; but GP1 MAC_SLEEP check is a | |
1254 | * good idea before accessing 3945/4965 SRAM (e.g. reading Event Log). | |
1255 | * | |
1256 | * 5000 series and later (including 1000 series) have non-volatile SRAM, | |
1257 | * and do not save/restore SRAM when power cycling. | |
1258 | */ | |
1259 | ret = iwl_poll_bit(trans, CSR_GP_CNTRL, | |
1260 | CSR_GP_CNTRL_REG_VAL_MAC_ACCESS_EN, | |
1261 | (CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY | | |
1262 | CSR_GP_CNTRL_REG_FLAG_GOING_TO_SLEEP), 15000); | |
1263 | if (unlikely(ret < 0)) { | |
1264 | iwl_write32(trans, CSR_RESET, CSR_RESET_REG_FLAG_FORCE_NMI); | |
1265 | if (!silent) { | |
1266 | u32 val = iwl_read32(trans, CSR_GP_CNTRL); | |
1267 | WARN_ONCE(1, | |
1268 | "Timeout waiting for hardware access (CSR_GP_CNTRL 0x%08x)\n", | |
1269 | val); | |
cfb4e624 | 1270 | spin_unlock_irqrestore(&trans_pcie->reg_lock, *flags); |
7a65d170 EG |
1271 | return false; |
1272 | } | |
1273 | } | |
1274 | ||
b9439491 | 1275 | out: |
e56b04ef LE |
1276 | /* |
1277 | * Fool sparse by faking we release the lock - sparse will | |
1278 | * track nic_access anyway. | |
1279 | */ | |
cfb4e624 | 1280 | __release(&trans_pcie->reg_lock); |
7a65d170 EG |
1281 | return true; |
1282 | } | |
1283 | ||
e56b04ef LE |
1284 | static void iwl_trans_pcie_release_nic_access(struct iwl_trans *trans, |
1285 | unsigned long *flags) | |
7a65d170 | 1286 | { |
cfb4e624 | 1287 | struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans); |
e56b04ef | 1288 | |
cfb4e624 | 1289 | lockdep_assert_held(&trans_pcie->reg_lock); |
e56b04ef LE |
1290 | |
1291 | /* | |
1292 | * Fool sparse by faking we acquiring the lock - sparse will | |
1293 | * track nic_access anyway. | |
1294 | */ | |
cfb4e624 | 1295 | __acquire(&trans_pcie->reg_lock); |
e56b04ef | 1296 | |
b9439491 EG |
1297 | if (trans_pcie->cmd_in_flight) |
1298 | goto out; | |
1299 | ||
e139dc4a LE |
1300 | __iwl_trans_pcie_clear_bit(trans, CSR_GP_CNTRL, |
1301 | CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ); | |
7a65d170 EG |
1302 | /* |
1303 | * Above we read the CSR_GP_CNTRL register, which will flush | |
1304 | * any previous writes, but we need the write that clears the | |
1305 | * MAC_ACCESS_REQ bit to be performed before any other writes | |
1306 | * scheduled on different CPUs (after we drop reg_lock). | |
1307 | */ | |
1308 | mmiowb(); | |
b9439491 | 1309 | out: |
cfb4e624 | 1310 | spin_unlock_irqrestore(&trans_pcie->reg_lock, *flags); |
7a65d170 EG |
1311 | } |
1312 | ||
4fd442db EG |
1313 | static int iwl_trans_pcie_read_mem(struct iwl_trans *trans, u32 addr, |
1314 | void *buf, int dwords) | |
1315 | { | |
1316 | unsigned long flags; | |
1317 | int offs, ret = 0; | |
1318 | u32 *vals = buf; | |
1319 | ||
e56b04ef | 1320 | if (iwl_trans_grab_nic_access(trans, false, &flags)) { |
4fd442db EG |
1321 | iwl_write32(trans, HBUS_TARG_MEM_RADDR, addr); |
1322 | for (offs = 0; offs < dwords; offs++) | |
1323 | vals[offs] = iwl_read32(trans, HBUS_TARG_MEM_RDAT); | |
e56b04ef | 1324 | iwl_trans_release_nic_access(trans, &flags); |
4fd442db EG |
1325 | } else { |
1326 | ret = -EBUSY; | |
1327 | } | |
4fd442db EG |
1328 | return ret; |
1329 | } | |
1330 | ||
1331 | static int iwl_trans_pcie_write_mem(struct iwl_trans *trans, u32 addr, | |
bf0fd5da | 1332 | const void *buf, int dwords) |
4fd442db EG |
1333 | { |
1334 | unsigned long flags; | |
1335 | int offs, ret = 0; | |
bf0fd5da | 1336 | const u32 *vals = buf; |
4fd442db | 1337 | |
e56b04ef | 1338 | if (iwl_trans_grab_nic_access(trans, false, &flags)) { |
4fd442db EG |
1339 | iwl_write32(trans, HBUS_TARG_MEM_WADDR, addr); |
1340 | for (offs = 0; offs < dwords; offs++) | |
01387ffd EG |
1341 | iwl_write32(trans, HBUS_TARG_MEM_WDAT, |
1342 | vals ? vals[offs] : 0); | |
e56b04ef | 1343 | iwl_trans_release_nic_access(trans, &flags); |
4fd442db EG |
1344 | } else { |
1345 | ret = -EBUSY; | |
1346 | } | |
4fd442db EG |
1347 | return ret; |
1348 | } | |
7a65d170 | 1349 | |
5f178cd2 EG |
1350 | #define IWL_FLUSH_WAIT_MS 2000 |
1351 | ||
3cafdbe6 | 1352 | static int iwl_trans_pcie_wait_txq_empty(struct iwl_trans *trans, u32 txq_bm) |
5f178cd2 | 1353 | { |
8ad71bef | 1354 | struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans); |
990aa6d7 | 1355 | struct iwl_txq *txq; |
5f178cd2 EG |
1356 | struct iwl_queue *q; |
1357 | int cnt; | |
1358 | unsigned long now = jiffies; | |
1c3fea82 EG |
1359 | u32 scd_sram_addr; |
1360 | u8 buf[16]; | |
5f178cd2 EG |
1361 | int ret = 0; |
1362 | ||
1363 | /* waiting for all the tx frames complete might take a while */ | |
035f7ff2 | 1364 | for (cnt = 0; cnt < trans->cfg->base_params->num_of_queues; cnt++) { |
fa1a91fd EG |
1365 | u8 wr_ptr; |
1366 | ||
9ba1947a | 1367 | if (cnt == trans_pcie->cmd_queue) |
5f178cd2 | 1368 | continue; |
3cafdbe6 EG |
1369 | if (!test_bit(cnt, trans_pcie->queue_used)) |
1370 | continue; | |
1371 | if (!(BIT(cnt) & txq_bm)) | |
1372 | continue; | |
748fa67c EG |
1373 | |
1374 | IWL_DEBUG_TX_QUEUES(trans, "Emptying queue %d...\n", cnt); | |
8ad71bef | 1375 | txq = &trans_pcie->txq[cnt]; |
5f178cd2 | 1376 | q = &txq->q; |
fa1a91fd EG |
1377 | wr_ptr = ACCESS_ONCE(q->write_ptr); |
1378 | ||
1379 | while (q->read_ptr != ACCESS_ONCE(q->write_ptr) && | |
1380 | !time_after(jiffies, | |
1381 | now + msecs_to_jiffies(IWL_FLUSH_WAIT_MS))) { | |
1382 | u8 write_ptr = ACCESS_ONCE(q->write_ptr); | |
1383 | ||
1384 | if (WARN_ONCE(wr_ptr != write_ptr, | |
1385 | "WR pointer moved while flushing %d -> %d\n", | |
1386 | wr_ptr, write_ptr)) | |
1387 | return -ETIMEDOUT; | |
5f178cd2 | 1388 | msleep(1); |
fa1a91fd | 1389 | } |
5f178cd2 EG |
1390 | |
1391 | if (q->read_ptr != q->write_ptr) { | |
1c3fea82 EG |
1392 | IWL_ERR(trans, |
1393 | "fail to flush all tx fifo queues Q %d\n", cnt); | |
5f178cd2 EG |
1394 | ret = -ETIMEDOUT; |
1395 | break; | |
1396 | } | |
748fa67c | 1397 | IWL_DEBUG_TX_QUEUES(trans, "Queue %d is now empty.\n", cnt); |
5f178cd2 | 1398 | } |
1c3fea82 EG |
1399 | |
1400 | if (!ret) | |
1401 | return 0; | |
1402 | ||
1403 | IWL_ERR(trans, "Current SW read_ptr %d write_ptr %d\n", | |
1404 | txq->q.read_ptr, txq->q.write_ptr); | |
1405 | ||
1406 | scd_sram_addr = trans_pcie->scd_base_addr + | |
1407 | SCD_TX_STTS_QUEUE_OFFSET(txq->q.id); | |
1408 | iwl_trans_read_mem_bytes(trans, scd_sram_addr, buf, sizeof(buf)); | |
1409 | ||
1410 | iwl_print_hex_error(trans, buf, sizeof(buf)); | |
1411 | ||
1412 | for (cnt = 0; cnt < FH_TCSR_CHNL_NUM; cnt++) | |
1413 | IWL_ERR(trans, "FH TRBs(%d) = 0x%08x\n", cnt, | |
1414 | iwl_read_direct32(trans, FH_TX_TRB_REG(cnt))); | |
1415 | ||
1416 | for (cnt = 0; cnt < trans->cfg->base_params->num_of_queues; cnt++) { | |
1417 | u32 status = iwl_read_prph(trans, SCD_QUEUE_STATUS_BITS(cnt)); | |
1418 | u8 fifo = (status >> SCD_QUEUE_STTS_REG_POS_TXF) & 0x7; | |
1419 | bool active = !!(status & BIT(SCD_QUEUE_STTS_REG_POS_ACTIVE)); | |
1420 | u32 tbl_dw = | |
1421 | iwl_trans_read_mem32(trans, trans_pcie->scd_base_addr + | |
1422 | SCD_TRANS_TBL_OFFSET_QUEUE(cnt)); | |
1423 | ||
1424 | if (cnt & 0x1) | |
1425 | tbl_dw = (tbl_dw & 0xFFFF0000) >> 16; | |
1426 | else | |
1427 | tbl_dw = tbl_dw & 0x0000FFFF; | |
1428 | ||
1429 | IWL_ERR(trans, | |
1430 | "Q %d is %sactive and mapped to fifo %d ra_tid 0x%04x [%d,%d]\n", | |
1431 | cnt, active ? "" : "in", fifo, tbl_dw, | |
83f32a4b JB |
1432 | iwl_read_prph(trans, SCD_QUEUE_RDPTR(cnt)) & |
1433 | (TFD_QUEUE_SIZE_MAX - 1), | |
1c3fea82 EG |
1434 | iwl_read_prph(trans, SCD_QUEUE_WRPTR(cnt))); |
1435 | } | |
1436 | ||
5f178cd2 EG |
1437 | return ret; |
1438 | } | |
1439 | ||
e139dc4a LE |
1440 | static void iwl_trans_pcie_set_bits_mask(struct iwl_trans *trans, u32 reg, |
1441 | u32 mask, u32 value) | |
1442 | { | |
e56b04ef | 1443 | struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans); |
e139dc4a LE |
1444 | unsigned long flags; |
1445 | ||
e56b04ef | 1446 | spin_lock_irqsave(&trans_pcie->reg_lock, flags); |
e139dc4a | 1447 | __iwl_trans_pcie_set_bits_mask(trans, reg, mask, value); |
e56b04ef | 1448 | spin_unlock_irqrestore(&trans_pcie->reg_lock, flags); |
e139dc4a LE |
1449 | } |
1450 | ||
ff620849 EG |
1451 | static const char *get_csr_string(int cmd) |
1452 | { | |
d9fb6465 | 1453 | #define IWL_CMD(x) case x: return #x |
ff620849 EG |
1454 | switch (cmd) { |
1455 | IWL_CMD(CSR_HW_IF_CONFIG_REG); | |
1456 | IWL_CMD(CSR_INT_COALESCING); | |
1457 | IWL_CMD(CSR_INT); | |
1458 | IWL_CMD(CSR_INT_MASK); | |
1459 | IWL_CMD(CSR_FH_INT_STATUS); | |
1460 | IWL_CMD(CSR_GPIO_IN); | |
1461 | IWL_CMD(CSR_RESET); | |
1462 | IWL_CMD(CSR_GP_CNTRL); | |
1463 | IWL_CMD(CSR_HW_REV); | |
1464 | IWL_CMD(CSR_EEPROM_REG); | |
1465 | IWL_CMD(CSR_EEPROM_GP); | |
1466 | IWL_CMD(CSR_OTP_GP_REG); | |
1467 | IWL_CMD(CSR_GIO_REG); | |
1468 | IWL_CMD(CSR_GP_UCODE_REG); | |
1469 | IWL_CMD(CSR_GP_DRIVER_REG); | |
1470 | IWL_CMD(CSR_UCODE_DRV_GP1); | |
1471 | IWL_CMD(CSR_UCODE_DRV_GP2); | |
1472 | IWL_CMD(CSR_LED_REG); | |
1473 | IWL_CMD(CSR_DRAM_INT_TBL_REG); | |
1474 | IWL_CMD(CSR_GIO_CHICKEN_BITS); | |
1475 | IWL_CMD(CSR_ANA_PLL_CFG); | |
1476 | IWL_CMD(CSR_HW_REV_WA_REG); | |
a812cba9 | 1477 | IWL_CMD(CSR_MONITOR_STATUS_REG); |
ff620849 EG |
1478 | IWL_CMD(CSR_DBG_HPET_MEM_REG); |
1479 | default: | |
1480 | return "UNKNOWN"; | |
1481 | } | |
d9fb6465 | 1482 | #undef IWL_CMD |
ff620849 EG |
1483 | } |
1484 | ||
990aa6d7 | 1485 | void iwl_pcie_dump_csr(struct iwl_trans *trans) |
ff620849 EG |
1486 | { |
1487 | int i; | |
1488 | static const u32 csr_tbl[] = { | |
1489 | CSR_HW_IF_CONFIG_REG, | |
1490 | CSR_INT_COALESCING, | |
1491 | CSR_INT, | |
1492 | CSR_INT_MASK, | |
1493 | CSR_FH_INT_STATUS, | |
1494 | CSR_GPIO_IN, | |
1495 | CSR_RESET, | |
1496 | CSR_GP_CNTRL, | |
1497 | CSR_HW_REV, | |
1498 | CSR_EEPROM_REG, | |
1499 | CSR_EEPROM_GP, | |
1500 | CSR_OTP_GP_REG, | |
1501 | CSR_GIO_REG, | |
1502 | CSR_GP_UCODE_REG, | |
1503 | CSR_GP_DRIVER_REG, | |
1504 | CSR_UCODE_DRV_GP1, | |
1505 | CSR_UCODE_DRV_GP2, | |
1506 | CSR_LED_REG, | |
1507 | CSR_DRAM_INT_TBL_REG, | |
1508 | CSR_GIO_CHICKEN_BITS, | |
1509 | CSR_ANA_PLL_CFG, | |
a812cba9 | 1510 | CSR_MONITOR_STATUS_REG, |
ff620849 EG |
1511 | CSR_HW_REV_WA_REG, |
1512 | CSR_DBG_HPET_MEM_REG | |
1513 | }; | |
1514 | IWL_ERR(trans, "CSR values:\n"); | |
1515 | IWL_ERR(trans, "(2nd byte of CSR_INT_COALESCING is " | |
1516 | "CSR_INT_PERIODIC_REG)\n"); | |
1517 | for (i = 0; i < ARRAY_SIZE(csr_tbl); i++) { | |
1518 | IWL_ERR(trans, " %25s: 0X%08x\n", | |
1519 | get_csr_string(csr_tbl[i]), | |
1042db2a | 1520 | iwl_read32(trans, csr_tbl[i])); |
ff620849 EG |
1521 | } |
1522 | } | |
1523 | ||
87e5666c EG |
1524 | #ifdef CONFIG_IWLWIFI_DEBUGFS |
1525 | /* create and remove of files */ | |
1526 | #define DEBUGFS_ADD_FILE(name, parent, mode) do { \ | |
5a878bf6 | 1527 | if (!debugfs_create_file(#name, mode, parent, trans, \ |
87e5666c | 1528 | &iwl_dbgfs_##name##_ops)) \ |
9da987ac | 1529 | goto err; \ |
87e5666c EG |
1530 | } while (0) |
1531 | ||
1532 | /* file operation */ | |
87e5666c | 1533 | #define DEBUGFS_READ_FILE_OPS(name) \ |
87e5666c EG |
1534 | static const struct file_operations iwl_dbgfs_##name##_ops = { \ |
1535 | .read = iwl_dbgfs_##name##_read, \ | |
234e3405 | 1536 | .open = simple_open, \ |
87e5666c EG |
1537 | .llseek = generic_file_llseek, \ |
1538 | }; | |
1539 | ||
16db88ba | 1540 | #define DEBUGFS_WRITE_FILE_OPS(name) \ |
16db88ba EG |
1541 | static const struct file_operations iwl_dbgfs_##name##_ops = { \ |
1542 | .write = iwl_dbgfs_##name##_write, \ | |
234e3405 | 1543 | .open = simple_open, \ |
16db88ba EG |
1544 | .llseek = generic_file_llseek, \ |
1545 | }; | |
1546 | ||
87e5666c | 1547 | #define DEBUGFS_READ_WRITE_FILE_OPS(name) \ |
87e5666c EG |
1548 | static const struct file_operations iwl_dbgfs_##name##_ops = { \ |
1549 | .write = iwl_dbgfs_##name##_write, \ | |
1550 | .read = iwl_dbgfs_##name##_read, \ | |
234e3405 | 1551 | .open = simple_open, \ |
87e5666c EG |
1552 | .llseek = generic_file_llseek, \ |
1553 | }; | |
1554 | ||
87e5666c | 1555 | static ssize_t iwl_dbgfs_tx_queue_read(struct file *file, |
20d3b647 JB |
1556 | char __user *user_buf, |
1557 | size_t count, loff_t *ppos) | |
8ad71bef | 1558 | { |
5a878bf6 | 1559 | struct iwl_trans *trans = file->private_data; |
8ad71bef | 1560 | struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans); |
990aa6d7 | 1561 | struct iwl_txq *txq; |
87e5666c EG |
1562 | struct iwl_queue *q; |
1563 | char *buf; | |
1564 | int pos = 0; | |
1565 | int cnt; | |
1566 | int ret; | |
1745e440 WYG |
1567 | size_t bufsz; |
1568 | ||
035f7ff2 | 1569 | bufsz = sizeof(char) * 64 * trans->cfg->base_params->num_of_queues; |
87e5666c | 1570 | |
f9e75447 | 1571 | if (!trans_pcie->txq) |
87e5666c | 1572 | return -EAGAIN; |
f9e75447 | 1573 | |
87e5666c EG |
1574 | buf = kzalloc(bufsz, GFP_KERNEL); |
1575 | if (!buf) | |
1576 | return -ENOMEM; | |
1577 | ||
035f7ff2 | 1578 | for (cnt = 0; cnt < trans->cfg->base_params->num_of_queues; cnt++) { |
8ad71bef | 1579 | txq = &trans_pcie->txq[cnt]; |
87e5666c EG |
1580 | q = &txq->q; |
1581 | pos += scnprintf(buf + pos, bufsz - pos, | |
f40faf62 | 1582 | "hwq %.2d: read=%u write=%u use=%d stop=%d need_update=%d%s\n", |
87e5666c | 1583 | cnt, q->read_ptr, q->write_ptr, |
9eae88fa | 1584 | !!test_bit(cnt, trans_pcie->queue_used), |
f40faf62 AL |
1585 | !!test_bit(cnt, trans_pcie->queue_stopped), |
1586 | txq->need_update, | |
1587 | (cnt == trans_pcie->cmd_queue ? " HCMD" : "")); | |
87e5666c EG |
1588 | } |
1589 | ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos); | |
1590 | kfree(buf); | |
1591 | return ret; | |
1592 | } | |
1593 | ||
1594 | static ssize_t iwl_dbgfs_rx_queue_read(struct file *file, | |
20d3b647 JB |
1595 | char __user *user_buf, |
1596 | size_t count, loff_t *ppos) | |
1597 | { | |
5a878bf6 | 1598 | struct iwl_trans *trans = file->private_data; |
20d3b647 | 1599 | struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans); |
990aa6d7 | 1600 | struct iwl_rxq *rxq = &trans_pcie->rxq; |
87e5666c EG |
1601 | char buf[256]; |
1602 | int pos = 0; | |
1603 | const size_t bufsz = sizeof(buf); | |
1604 | ||
1605 | pos += scnprintf(buf + pos, bufsz - pos, "read: %u\n", | |
1606 | rxq->read); | |
1607 | pos += scnprintf(buf + pos, bufsz - pos, "write: %u\n", | |
1608 | rxq->write); | |
f40faf62 AL |
1609 | pos += scnprintf(buf + pos, bufsz - pos, "write_actual: %u\n", |
1610 | rxq->write_actual); | |
1611 | pos += scnprintf(buf + pos, bufsz - pos, "need_update: %d\n", | |
1612 | rxq->need_update); | |
87e5666c EG |
1613 | pos += scnprintf(buf + pos, bufsz - pos, "free_count: %u\n", |
1614 | rxq->free_count); | |
1615 | if (rxq->rb_stts) { | |
1616 | pos += scnprintf(buf + pos, bufsz - pos, "closed_rb_num: %u\n", | |
1617 | le16_to_cpu(rxq->rb_stts->closed_rb_num) & 0x0FFF); | |
1618 | } else { | |
1619 | pos += scnprintf(buf + pos, bufsz - pos, | |
1620 | "closed_rb_num: Not Allocated\n"); | |
1621 | } | |
1622 | return simple_read_from_buffer(user_buf, count, ppos, buf, pos); | |
1623 | } | |
1624 | ||
1f7b6172 EG |
1625 | static ssize_t iwl_dbgfs_interrupt_read(struct file *file, |
1626 | char __user *user_buf, | |
20d3b647 JB |
1627 | size_t count, loff_t *ppos) |
1628 | { | |
1f7b6172 | 1629 | struct iwl_trans *trans = file->private_data; |
20d3b647 | 1630 | struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans); |
1f7b6172 EG |
1631 | struct isr_statistics *isr_stats = &trans_pcie->isr_stats; |
1632 | ||
1633 | int pos = 0; | |
1634 | char *buf; | |
1635 | int bufsz = 24 * 64; /* 24 items * 64 char per item */ | |
1636 | ssize_t ret; | |
1637 | ||
1638 | buf = kzalloc(bufsz, GFP_KERNEL); | |
f9e75447 | 1639 | if (!buf) |
1f7b6172 | 1640 | return -ENOMEM; |
1f7b6172 EG |
1641 | |
1642 | pos += scnprintf(buf + pos, bufsz - pos, | |
1643 | "Interrupt Statistics Report:\n"); | |
1644 | ||
1645 | pos += scnprintf(buf + pos, bufsz - pos, "HW Error:\t\t\t %u\n", | |
1646 | isr_stats->hw); | |
1647 | pos += scnprintf(buf + pos, bufsz - pos, "SW Error:\t\t\t %u\n", | |
1648 | isr_stats->sw); | |
1649 | if (isr_stats->sw || isr_stats->hw) { | |
1650 | pos += scnprintf(buf + pos, bufsz - pos, | |
1651 | "\tLast Restarting Code: 0x%X\n", | |
1652 | isr_stats->err_code); | |
1653 | } | |
1654 | #ifdef CONFIG_IWLWIFI_DEBUG | |
1655 | pos += scnprintf(buf + pos, bufsz - pos, "Frame transmitted:\t\t %u\n", | |
1656 | isr_stats->sch); | |
1657 | pos += scnprintf(buf + pos, bufsz - pos, "Alive interrupt:\t\t %u\n", | |
1658 | isr_stats->alive); | |
1659 | #endif | |
1660 | pos += scnprintf(buf + pos, bufsz - pos, | |
1661 | "HW RF KILL switch toggled:\t %u\n", isr_stats->rfkill); | |
1662 | ||
1663 | pos += scnprintf(buf + pos, bufsz - pos, "CT KILL:\t\t\t %u\n", | |
1664 | isr_stats->ctkill); | |
1665 | ||
1666 | pos += scnprintf(buf + pos, bufsz - pos, "Wakeup Interrupt:\t\t %u\n", | |
1667 | isr_stats->wakeup); | |
1668 | ||
1669 | pos += scnprintf(buf + pos, bufsz - pos, | |
1670 | "Rx command responses:\t\t %u\n", isr_stats->rx); | |
1671 | ||
1672 | pos += scnprintf(buf + pos, bufsz - pos, "Tx/FH interrupt:\t\t %u\n", | |
1673 | isr_stats->tx); | |
1674 | ||
1675 | pos += scnprintf(buf + pos, bufsz - pos, "Unexpected INTA:\t\t %u\n", | |
1676 | isr_stats->unhandled); | |
1677 | ||
1678 | ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos); | |
1679 | kfree(buf); | |
1680 | return ret; | |
1681 | } | |
1682 | ||
1683 | static ssize_t iwl_dbgfs_interrupt_write(struct file *file, | |
1684 | const char __user *user_buf, | |
1685 | size_t count, loff_t *ppos) | |
1686 | { | |
1687 | struct iwl_trans *trans = file->private_data; | |
20d3b647 | 1688 | struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans); |
1f7b6172 EG |
1689 | struct isr_statistics *isr_stats = &trans_pcie->isr_stats; |
1690 | ||
1691 | char buf[8]; | |
1692 | int buf_size; | |
1693 | u32 reset_flag; | |
1694 | ||
1695 | memset(buf, 0, sizeof(buf)); | |
1696 | buf_size = min(count, sizeof(buf) - 1); | |
1697 | if (copy_from_user(buf, user_buf, buf_size)) | |
1698 | return -EFAULT; | |
1699 | if (sscanf(buf, "%x", &reset_flag) != 1) | |
1700 | return -EFAULT; | |
1701 | if (reset_flag == 0) | |
1702 | memset(isr_stats, 0, sizeof(*isr_stats)); | |
1703 | ||
1704 | return count; | |
1705 | } | |
1706 | ||
16db88ba | 1707 | static ssize_t iwl_dbgfs_csr_write(struct file *file, |
20d3b647 JB |
1708 | const char __user *user_buf, |
1709 | size_t count, loff_t *ppos) | |
16db88ba EG |
1710 | { |
1711 | struct iwl_trans *trans = file->private_data; | |
1712 | char buf[8]; | |
1713 | int buf_size; | |
1714 | int csr; | |
1715 | ||
1716 | memset(buf, 0, sizeof(buf)); | |
1717 | buf_size = min(count, sizeof(buf) - 1); | |
1718 | if (copy_from_user(buf, user_buf, buf_size)) | |
1719 | return -EFAULT; | |
1720 | if (sscanf(buf, "%d", &csr) != 1) | |
1721 | return -EFAULT; | |
1722 | ||
990aa6d7 | 1723 | iwl_pcie_dump_csr(trans); |
16db88ba EG |
1724 | |
1725 | return count; | |
1726 | } | |
1727 | ||
16db88ba | 1728 | static ssize_t iwl_dbgfs_fh_reg_read(struct file *file, |
20d3b647 JB |
1729 | char __user *user_buf, |
1730 | size_t count, loff_t *ppos) | |
16db88ba EG |
1731 | { |
1732 | struct iwl_trans *trans = file->private_data; | |
94543a8d | 1733 | char *buf = NULL; |
56c2477f | 1734 | ssize_t ret; |
16db88ba | 1735 | |
56c2477f JB |
1736 | ret = iwl_dump_fh(trans, &buf); |
1737 | if (ret < 0) | |
1738 | return ret; | |
1739 | if (!buf) | |
1740 | return -EINVAL; | |
1741 | ret = simple_read_from_buffer(user_buf, count, ppos, buf, ret); | |
1742 | kfree(buf); | |
16db88ba EG |
1743 | return ret; |
1744 | } | |
1745 | ||
1f7b6172 | 1746 | DEBUGFS_READ_WRITE_FILE_OPS(interrupt); |
16db88ba | 1747 | DEBUGFS_READ_FILE_OPS(fh_reg); |
87e5666c EG |
1748 | DEBUGFS_READ_FILE_OPS(rx_queue); |
1749 | DEBUGFS_READ_FILE_OPS(tx_queue); | |
16db88ba | 1750 | DEBUGFS_WRITE_FILE_OPS(csr); |
87e5666c EG |
1751 | |
1752 | /* | |
1753 | * Create the debugfs files and directories | |
1754 | * | |
1755 | */ | |
1756 | static int iwl_trans_pcie_dbgfs_register(struct iwl_trans *trans, | |
20d3b647 | 1757 | struct dentry *dir) |
87e5666c | 1758 | { |
87e5666c EG |
1759 | DEBUGFS_ADD_FILE(rx_queue, dir, S_IRUSR); |
1760 | DEBUGFS_ADD_FILE(tx_queue, dir, S_IRUSR); | |
1f7b6172 | 1761 | DEBUGFS_ADD_FILE(interrupt, dir, S_IWUSR | S_IRUSR); |
16db88ba EG |
1762 | DEBUGFS_ADD_FILE(csr, dir, S_IWUSR); |
1763 | DEBUGFS_ADD_FILE(fh_reg, dir, S_IRUSR); | |
87e5666c | 1764 | return 0; |
9da987ac MV |
1765 | |
1766 | err: | |
1767 | IWL_ERR(trans, "failed to create the trans debugfs entry\n"); | |
1768 | return -ENOMEM; | |
87e5666c | 1769 | } |
4d075007 JB |
1770 | |
1771 | static u32 iwl_trans_pcie_get_cmdlen(struct iwl_tfd *tfd) | |
1772 | { | |
1773 | u32 cmdlen = 0; | |
1774 | int i; | |
1775 | ||
1776 | for (i = 0; i < IWL_NUM_OF_TBS; i++) | |
1777 | cmdlen += iwl_pcie_tfd_tb_get_len(tfd, i); | |
1778 | ||
1779 | return cmdlen; | |
1780 | } | |
1781 | ||
67c65f2c EG |
1782 | static const struct { |
1783 | u32 start, end; | |
1784 | } iwl_prph_dump_addr[] = { | |
1785 | { .start = 0x00a00000, .end = 0x00a00000 }, | |
1786 | { .start = 0x00a0000c, .end = 0x00a00024 }, | |
1787 | { .start = 0x00a0002c, .end = 0x00a0003c }, | |
1788 | { .start = 0x00a00410, .end = 0x00a00418 }, | |
1789 | { .start = 0x00a00420, .end = 0x00a00420 }, | |
1790 | { .start = 0x00a00428, .end = 0x00a00428 }, | |
1791 | { .start = 0x00a00430, .end = 0x00a0043c }, | |
1792 | { .start = 0x00a00444, .end = 0x00a00444 }, | |
1793 | { .start = 0x00a004c0, .end = 0x00a004cc }, | |
1794 | { .start = 0x00a004d8, .end = 0x00a004d8 }, | |
1795 | { .start = 0x00a004e0, .end = 0x00a004f0 }, | |
1796 | { .start = 0x00a00840, .end = 0x00a00840 }, | |
1797 | { .start = 0x00a00850, .end = 0x00a00858 }, | |
1798 | { .start = 0x00a01004, .end = 0x00a01008 }, | |
1799 | { .start = 0x00a01010, .end = 0x00a01010 }, | |
1800 | { .start = 0x00a01018, .end = 0x00a01018 }, | |
1801 | { .start = 0x00a01024, .end = 0x00a01024 }, | |
1802 | { .start = 0x00a0102c, .end = 0x00a01034 }, | |
1803 | { .start = 0x00a0103c, .end = 0x00a01040 }, | |
1804 | { .start = 0x00a01048, .end = 0x00a01094 }, | |
1805 | { .start = 0x00a01c00, .end = 0x00a01c20 }, | |
1806 | { .start = 0x00a01c58, .end = 0x00a01c58 }, | |
1807 | { .start = 0x00a01c7c, .end = 0x00a01c7c }, | |
1808 | { .start = 0x00a01c28, .end = 0x00a01c54 }, | |
1809 | { .start = 0x00a01c5c, .end = 0x00a01c5c }, | |
1810 | { .start = 0x00a01c84, .end = 0x00a01c84 }, | |
1811 | { .start = 0x00a01ce0, .end = 0x00a01d0c }, | |
1812 | { .start = 0x00a01d18, .end = 0x00a01d20 }, | |
1813 | { .start = 0x00a01d2c, .end = 0x00a01d30 }, | |
1814 | { .start = 0x00a01d40, .end = 0x00a01d5c }, | |
1815 | { .start = 0x00a01d80, .end = 0x00a01d80 }, | |
1816 | { .start = 0x00a01d98, .end = 0x00a01d98 }, | |
1817 | { .start = 0x00a01dc0, .end = 0x00a01dfc }, | |
1818 | { .start = 0x00a01e00, .end = 0x00a01e2c }, | |
1819 | { .start = 0x00a01e40, .end = 0x00a01e60 }, | |
1820 | { .start = 0x00a01e84, .end = 0x00a01e90 }, | |
1821 | { .start = 0x00a01e9c, .end = 0x00a01ec4 }, | |
1822 | { .start = 0x00a01ed0, .end = 0x00a01ed0 }, | |
1823 | { .start = 0x00a01f00, .end = 0x00a01f14 }, | |
1824 | { .start = 0x00a01f44, .end = 0x00a01f58 }, | |
1825 | { .start = 0x00a01f80, .end = 0x00a01fa8 }, | |
1826 | { .start = 0x00a01fb0, .end = 0x00a01fbc }, | |
1827 | { .start = 0x00a01ff8, .end = 0x00a01ffc }, | |
1828 | { .start = 0x00a02000, .end = 0x00a02048 }, | |
1829 | { .start = 0x00a02068, .end = 0x00a020f0 }, | |
1830 | { .start = 0x00a02100, .end = 0x00a02118 }, | |
1831 | { .start = 0x00a02140, .end = 0x00a0214c }, | |
1832 | { .start = 0x00a02168, .end = 0x00a0218c }, | |
1833 | { .start = 0x00a021c0, .end = 0x00a021c0 }, | |
1834 | { .start = 0x00a02400, .end = 0x00a02410 }, | |
1835 | { .start = 0x00a02418, .end = 0x00a02420 }, | |
1836 | { .start = 0x00a02428, .end = 0x00a0242c }, | |
1837 | { .start = 0x00a02434, .end = 0x00a02434 }, | |
1838 | { .start = 0x00a02440, .end = 0x00a02460 }, | |
1839 | { .start = 0x00a02468, .end = 0x00a024b0 }, | |
1840 | { .start = 0x00a024c8, .end = 0x00a024cc }, | |
1841 | { .start = 0x00a02500, .end = 0x00a02504 }, | |
1842 | { .start = 0x00a0250c, .end = 0x00a02510 }, | |
1843 | { .start = 0x00a02540, .end = 0x00a02554 }, | |
1844 | { .start = 0x00a02580, .end = 0x00a025f4 }, | |
1845 | { .start = 0x00a02600, .end = 0x00a0260c }, | |
1846 | { .start = 0x00a02648, .end = 0x00a02650 }, | |
1847 | { .start = 0x00a02680, .end = 0x00a02680 }, | |
1848 | { .start = 0x00a026c0, .end = 0x00a026d0 }, | |
1849 | { .start = 0x00a02700, .end = 0x00a0270c }, | |
1850 | { .start = 0x00a02804, .end = 0x00a02804 }, | |
1851 | { .start = 0x00a02818, .end = 0x00a0281c }, | |
1852 | { .start = 0x00a02c00, .end = 0x00a02db4 }, | |
1853 | { .start = 0x00a02df4, .end = 0x00a02fb0 }, | |
1854 | { .start = 0x00a03000, .end = 0x00a03014 }, | |
1855 | { .start = 0x00a0301c, .end = 0x00a0302c }, | |
1856 | { .start = 0x00a03034, .end = 0x00a03038 }, | |
1857 | { .start = 0x00a03040, .end = 0x00a03048 }, | |
1858 | { .start = 0x00a03060, .end = 0x00a03068 }, | |
1859 | { .start = 0x00a03070, .end = 0x00a03074 }, | |
1860 | { .start = 0x00a0307c, .end = 0x00a0307c }, | |
1861 | { .start = 0x00a03080, .end = 0x00a03084 }, | |
1862 | { .start = 0x00a0308c, .end = 0x00a03090 }, | |
1863 | { .start = 0x00a03098, .end = 0x00a03098 }, | |
1864 | { .start = 0x00a030a0, .end = 0x00a030a0 }, | |
1865 | { .start = 0x00a030a8, .end = 0x00a030b4 }, | |
1866 | { .start = 0x00a030bc, .end = 0x00a030bc }, | |
1867 | { .start = 0x00a030c0, .end = 0x00a0312c }, | |
1868 | { .start = 0x00a03c00, .end = 0x00a03c5c }, | |
1869 | { .start = 0x00a04400, .end = 0x00a04454 }, | |
1870 | { .start = 0x00a04460, .end = 0x00a04474 }, | |
1871 | { .start = 0x00a044c0, .end = 0x00a044ec }, | |
1872 | { .start = 0x00a04500, .end = 0x00a04504 }, | |
1873 | { .start = 0x00a04510, .end = 0x00a04538 }, | |
1874 | { .start = 0x00a04540, .end = 0x00a04548 }, | |
1875 | { .start = 0x00a04560, .end = 0x00a0457c }, | |
1876 | { .start = 0x00a04590, .end = 0x00a04598 }, | |
1877 | { .start = 0x00a045c0, .end = 0x00a045f4 }, | |
1878 | }; | |
1879 | ||
1880 | static u32 iwl_trans_pcie_dump_prph(struct iwl_trans *trans, | |
1881 | struct iwl_fw_error_dump_data **data) | |
1882 | { | |
1883 | struct iwl_fw_error_dump_prph *prph; | |
1884 | unsigned long flags; | |
1885 | u32 prph_len = 0, i; | |
1886 | ||
1887 | if (!iwl_trans_grab_nic_access(trans, false, &flags)) | |
1888 | return 0; | |
1889 | ||
1890 | for (i = 0; i < ARRAY_SIZE(iwl_prph_dump_addr); i++) { | |
1891 | /* The range includes both boundaries */ | |
1892 | int num_bytes_in_chunk = iwl_prph_dump_addr[i].end - | |
1893 | iwl_prph_dump_addr[i].start + 4; | |
1894 | int reg; | |
1895 | __le32 *val; | |
1896 | ||
1897 | prph_len += sizeof(*data) + sizeof(*prph) + | |
1898 | num_bytes_in_chunk; | |
1899 | ||
1900 | (*data)->type = cpu_to_le32(IWL_FW_ERROR_DUMP_PRPH); | |
1901 | (*data)->len = cpu_to_le32(sizeof(*prph) + | |
1902 | num_bytes_in_chunk); | |
1903 | prph = (void *)(*data)->data; | |
1904 | prph->prph_start = cpu_to_le32(iwl_prph_dump_addr[i].start); | |
1905 | val = (void *)prph->data; | |
1906 | ||
1907 | for (reg = iwl_prph_dump_addr[i].start; | |
1908 | reg <= iwl_prph_dump_addr[i].end; | |
1909 | reg += 4) | |
1910 | *val++ = cpu_to_le32(iwl_trans_pcie_read_prph(trans, | |
1911 | reg)); | |
1912 | *data = iwl_fw_error_next_data(*data); | |
1913 | } | |
1914 | ||
1915 | iwl_trans_release_nic_access(trans, &flags); | |
1916 | ||
1917 | return prph_len; | |
1918 | } | |
1919 | ||
473ad712 EG |
1920 | #define IWL_CSR_TO_DUMP (0x250) |
1921 | ||
1922 | static u32 iwl_trans_pcie_dump_csr(struct iwl_trans *trans, | |
1923 | struct iwl_fw_error_dump_data **data) | |
1924 | { | |
1925 | u32 csr_len = sizeof(**data) + IWL_CSR_TO_DUMP; | |
1926 | __le32 *val; | |
1927 | int i; | |
1928 | ||
1929 | (*data)->type = cpu_to_le32(IWL_FW_ERROR_DUMP_CSR); | |
1930 | (*data)->len = cpu_to_le32(IWL_CSR_TO_DUMP); | |
1931 | val = (void *)(*data)->data; | |
1932 | ||
1933 | for (i = 0; i < IWL_CSR_TO_DUMP; i += 4) | |
1934 | *val++ = cpu_to_le32(iwl_trans_pcie_read32(trans, i)); | |
1935 | ||
1936 | *data = iwl_fw_error_next_data(*data); | |
1937 | ||
1938 | return csr_len; | |
1939 | } | |
1940 | ||
48eb7b34 EG |
1941 | static |
1942 | struct iwl_trans_dump_data *iwl_trans_pcie_dump_data(struct iwl_trans *trans) | |
4d075007 JB |
1943 | { |
1944 | struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans); | |
1945 | struct iwl_fw_error_dump_data *data; | |
1946 | struct iwl_txq *cmdq = &trans_pcie->txq[trans_pcie->cmd_queue]; | |
1947 | struct iwl_fw_error_dump_txcmd *txcmd; | |
48eb7b34 | 1948 | struct iwl_trans_dump_data *dump_data; |
4d075007 JB |
1949 | u32 len; |
1950 | int i, ptr; | |
1951 | ||
473ad712 EG |
1952 | /* transport dump header */ |
1953 | len = sizeof(*dump_data); | |
1954 | ||
1955 | /* host commands */ | |
1956 | len += sizeof(*data) + | |
c2d20201 EG |
1957 | cmdq->q.n_window * (sizeof(*txcmd) + TFD_MAX_PAYLOAD_SIZE); |
1958 | ||
473ad712 EG |
1959 | /* CSR registers */ |
1960 | len += sizeof(*data) + IWL_CSR_TO_DUMP; | |
1961 | ||
1962 | /* PRPH registers */ | |
67c65f2c EG |
1963 | for (i = 0; i < ARRAY_SIZE(iwl_prph_dump_addr); i++) { |
1964 | /* The range includes both boundaries */ | |
1965 | int num_bytes_in_chunk = iwl_prph_dump_addr[i].end - | |
1966 | iwl_prph_dump_addr[i].start + 4; | |
1967 | ||
1968 | len += sizeof(*data) + sizeof(struct iwl_fw_error_dump_prph) + | |
1969 | num_bytes_in_chunk; | |
1970 | } | |
1971 | ||
473ad712 | 1972 | /* FW monitor */ |
c2d20201 | 1973 | if (trans_pcie->fw_mon_page) |
c544e9c4 | 1974 | len += sizeof(*data) + sizeof(struct iwl_fw_error_dump_fw_mon) + |
c2d20201 EG |
1975 | trans_pcie->fw_mon_size; |
1976 | ||
48eb7b34 EG |
1977 | dump_data = vzalloc(len); |
1978 | if (!dump_data) | |
1979 | return NULL; | |
4d075007 JB |
1980 | |
1981 | len = 0; | |
48eb7b34 | 1982 | data = (void *)dump_data->data; |
4d075007 JB |
1983 | data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_TXCMD); |
1984 | txcmd = (void *)data->data; | |
1985 | spin_lock_bh(&cmdq->lock); | |
1986 | ptr = cmdq->q.write_ptr; | |
1987 | for (i = 0; i < cmdq->q.n_window; i++) { | |
1988 | u8 idx = get_cmd_index(&cmdq->q, ptr); | |
1989 | u32 caplen, cmdlen; | |
1990 | ||
1991 | cmdlen = iwl_trans_pcie_get_cmdlen(&cmdq->tfds[ptr]); | |
1992 | caplen = min_t(u32, TFD_MAX_PAYLOAD_SIZE, cmdlen); | |
1993 | ||
1994 | if (cmdlen) { | |
1995 | len += sizeof(*txcmd) + caplen; | |
1996 | txcmd->cmdlen = cpu_to_le32(cmdlen); | |
1997 | txcmd->caplen = cpu_to_le32(caplen); | |
1998 | memcpy(txcmd->data, cmdq->entries[idx].cmd, caplen); | |
1999 | txcmd = (void *)((u8 *)txcmd->data + caplen); | |
2000 | } | |
2001 | ||
2002 | ptr = iwl_queue_dec_wrap(ptr); | |
2003 | } | |
2004 | spin_unlock_bh(&cmdq->lock); | |
2005 | ||
2006 | data->len = cpu_to_le32(len); | |
c2d20201 | 2007 | len += sizeof(*data); |
67c65f2c EG |
2008 | data = iwl_fw_error_next_data(data); |
2009 | ||
2010 | len += iwl_trans_pcie_dump_prph(trans, &data); | |
473ad712 | 2011 | len += iwl_trans_pcie_dump_csr(trans, &data); |
67c65f2c | 2012 | /* data is already pointing to the next section */ |
c2d20201 EG |
2013 | |
2014 | if (trans_pcie->fw_mon_page) { | |
c544e9c4 | 2015 | struct iwl_fw_error_dump_fw_mon *fw_mon_data; |
c2d20201 | 2016 | |
c2d20201 EG |
2017 | data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_FW_MONITOR); |
2018 | data->len = cpu_to_le32(trans_pcie->fw_mon_size + | |
2019 | sizeof(*fw_mon_data)); | |
2020 | fw_mon_data = (void *)data->data; | |
2021 | fw_mon_data->fw_mon_wr_ptr = | |
2022 | cpu_to_le32(iwl_read_prph(trans, MON_BUFF_WRPTR)); | |
2023 | fw_mon_data->fw_mon_cycle_cnt = | |
2024 | cpu_to_le32(iwl_read_prph(trans, MON_BUFF_CYCLE_CNT)); | |
2025 | fw_mon_data->fw_mon_base_ptr = | |
2026 | cpu_to_le32(iwl_read_prph(trans, MON_BUFF_BASE_ADDR)); | |
2027 | ||
2028 | /* | |
2029 | * The firmware is now asserted, it won't write anything to | |
2030 | * the buffer. CPU can take ownership to fetch the data. | |
2031 | * The buffer will be handed back to the device before the | |
2032 | * firmware will be restarted. | |
2033 | */ | |
2034 | dma_sync_single_for_cpu(trans->dev, trans_pcie->fw_mon_phys, | |
2035 | trans_pcie->fw_mon_size, | |
2036 | DMA_FROM_DEVICE); | |
2037 | memcpy(fw_mon_data->data, page_address(trans_pcie->fw_mon_page), | |
2038 | trans_pcie->fw_mon_size); | |
2039 | ||
2040 | len += sizeof(*data) + sizeof(*fw_mon_data) + | |
2041 | trans_pcie->fw_mon_size; | |
2042 | } | |
2043 | ||
48eb7b34 EG |
2044 | dump_data->len = len; |
2045 | ||
2046 | return dump_data; | |
4d075007 | 2047 | } |
87e5666c EG |
2048 | #else |
2049 | static int iwl_trans_pcie_dbgfs_register(struct iwl_trans *trans, | |
20d3b647 JB |
2050 | struct dentry *dir) |
2051 | { | |
2052 | return 0; | |
2053 | } | |
87e5666c EG |
2054 | #endif /*CONFIG_IWLWIFI_DEBUGFS */ |
2055 | ||
d1ff5253 | 2056 | static const struct iwl_trans_ops trans_ops_pcie = { |
57a1dc89 | 2057 | .start_hw = iwl_trans_pcie_start_hw, |
a4082843 | 2058 | .op_mode_leave = iwl_trans_pcie_op_mode_leave, |
ed6a3803 | 2059 | .fw_alive = iwl_trans_pcie_fw_alive, |
cf614297 | 2060 | .start_fw = iwl_trans_pcie_start_fw, |
e6bb4c9c | 2061 | .stop_device = iwl_trans_pcie_stop_device, |
48d42c42 | 2062 | |
ddaf5a5b JB |
2063 | .d3_suspend = iwl_trans_pcie_d3_suspend, |
2064 | .d3_resume = iwl_trans_pcie_d3_resume, | |
2dd4f9f7 | 2065 | |
f02831be | 2066 | .send_cmd = iwl_trans_pcie_send_hcmd, |
c85eb619 | 2067 | |
e6bb4c9c | 2068 | .tx = iwl_trans_pcie_tx, |
a0eaad71 | 2069 | .reclaim = iwl_trans_pcie_reclaim, |
34c1b7ba | 2070 | |
d0624be6 | 2071 | .txq_disable = iwl_trans_pcie_txq_disable, |
4beaf6c2 | 2072 | .txq_enable = iwl_trans_pcie_txq_enable, |
34c1b7ba | 2073 | |
87e5666c | 2074 | .dbgfs_register = iwl_trans_pcie_dbgfs_register, |
5f178cd2 | 2075 | |
990aa6d7 | 2076 | .wait_tx_queue_empty = iwl_trans_pcie_wait_txq_empty, |
5f178cd2 | 2077 | |
03905495 EG |
2078 | .write8 = iwl_trans_pcie_write8, |
2079 | .write32 = iwl_trans_pcie_write32, | |
2080 | .read32 = iwl_trans_pcie_read32, | |
6a06b6c1 EG |
2081 | .read_prph = iwl_trans_pcie_read_prph, |
2082 | .write_prph = iwl_trans_pcie_write_prph, | |
4fd442db EG |
2083 | .read_mem = iwl_trans_pcie_read_mem, |
2084 | .write_mem = iwl_trans_pcie_write_mem, | |
c6f600fc | 2085 | .configure = iwl_trans_pcie_configure, |
47107e84 | 2086 | .set_pmi = iwl_trans_pcie_set_pmi, |
7a65d170 | 2087 | .grab_nic_access = iwl_trans_pcie_grab_nic_access, |
e139dc4a LE |
2088 | .release_nic_access = iwl_trans_pcie_release_nic_access, |
2089 | .set_bits_mask = iwl_trans_pcie_set_bits_mask, | |
4d075007 JB |
2090 | |
2091 | #ifdef CONFIG_IWLWIFI_DEBUGFS | |
2092 | .dump_data = iwl_trans_pcie_dump_data, | |
2093 | #endif | |
e6bb4c9c | 2094 | }; |
a42a1844 | 2095 | |
87ce05a2 | 2096 | struct iwl_trans *iwl_trans_pcie_alloc(struct pci_dev *pdev, |
035f7ff2 EG |
2097 | const struct pci_device_id *ent, |
2098 | const struct iwl_cfg *cfg) | |
a42a1844 | 2099 | { |
a42a1844 EG |
2100 | struct iwl_trans_pcie *trans_pcie; |
2101 | struct iwl_trans *trans; | |
2102 | u16 pci_cmd; | |
2103 | int err; | |
2104 | ||
2105 | trans = kzalloc(sizeof(struct iwl_trans) + | |
20d3b647 | 2106 | sizeof(struct iwl_trans_pcie), GFP_KERNEL); |
6965a354 LC |
2107 | if (!trans) { |
2108 | err = -ENOMEM; | |
2109 | goto out; | |
2110 | } | |
a42a1844 EG |
2111 | |
2112 | trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans); | |
2113 | ||
2114 | trans->ops = &trans_ops_pcie; | |
035f7ff2 | 2115 | trans->cfg = cfg; |
2bfb5092 | 2116 | trans_lockdep_init(trans); |
a42a1844 | 2117 | trans_pcie->trans = trans; |
7b11488f | 2118 | spin_lock_init(&trans_pcie->irq_lock); |
e56b04ef | 2119 | spin_lock_init(&trans_pcie->reg_lock); |
13df1aab | 2120 | init_waitqueue_head(&trans_pcie->ucode_write_waitq); |
a42a1844 | 2121 | |
d819c6cf JB |
2122 | err = pci_enable_device(pdev); |
2123 | if (err) | |
2124 | goto out_no_pci; | |
2125 | ||
f2532b04 EG |
2126 | if (!cfg->base_params->pcie_l1_allowed) { |
2127 | /* | |
2128 | * W/A - seems to solve weird behavior. We need to remove this | |
2129 | * if we don't want to stay in L1 all the time. This wastes a | |
2130 | * lot of power. | |
2131 | */ | |
2132 | pci_disable_link_state(pdev, PCIE_LINK_STATE_L0S | | |
2133 | PCIE_LINK_STATE_L1 | | |
2134 | PCIE_LINK_STATE_CLKPM); | |
2135 | } | |
a42a1844 | 2136 | |
a42a1844 EG |
2137 | pci_set_master(pdev); |
2138 | ||
2139 | err = pci_set_dma_mask(pdev, DMA_BIT_MASK(36)); | |
2140 | if (!err) | |
2141 | err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(36)); | |
2142 | if (err) { | |
2143 | err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32)); | |
2144 | if (!err) | |
2145 | err = pci_set_consistent_dma_mask(pdev, | |
20d3b647 | 2146 | DMA_BIT_MASK(32)); |
a42a1844 EG |
2147 | /* both attempts failed: */ |
2148 | if (err) { | |
6a4b09f8 | 2149 | dev_err(&pdev->dev, "No suitable DMA available\n"); |
a42a1844 EG |
2150 | goto out_pci_disable_device; |
2151 | } | |
2152 | } | |
2153 | ||
2154 | err = pci_request_regions(pdev, DRV_NAME); | |
2155 | if (err) { | |
6a4b09f8 | 2156 | dev_err(&pdev->dev, "pci_request_regions failed\n"); |
a42a1844 EG |
2157 | goto out_pci_disable_device; |
2158 | } | |
2159 | ||
05f5b97e | 2160 | trans_pcie->hw_base = pci_ioremap_bar(pdev, 0); |
a42a1844 | 2161 | if (!trans_pcie->hw_base) { |
6a4b09f8 | 2162 | dev_err(&pdev->dev, "pci_ioremap_bar failed\n"); |
a42a1844 EG |
2163 | err = -ENODEV; |
2164 | goto out_pci_release_regions; | |
2165 | } | |
2166 | ||
a42a1844 EG |
2167 | /* We disable the RETRY_TIMEOUT register (0x41) to keep |
2168 | * PCI Tx retries from interfering with C3 CPU state */ | |
2169 | pci_write_config_byte(pdev, PCI_CFG_RETRY_TIMEOUT, 0x00); | |
2170 | ||
83f7a85f EG |
2171 | trans->dev = &pdev->dev; |
2172 | trans_pcie->pci_dev = pdev; | |
2173 | iwl_disable_interrupts(trans); | |
2174 | ||
a42a1844 | 2175 | err = pci_enable_msi(pdev); |
9f904b38 | 2176 | if (err) { |
6a4b09f8 | 2177 | dev_err(&pdev->dev, "pci_enable_msi failed(0X%x)\n", err); |
9f904b38 EG |
2178 | /* enable rfkill interrupt: hw bug w/a */ |
2179 | pci_read_config_word(pdev, PCI_COMMAND, &pci_cmd); | |
2180 | if (pci_cmd & PCI_COMMAND_INTX_DISABLE) { | |
2181 | pci_cmd &= ~PCI_COMMAND_INTX_DISABLE; | |
2182 | pci_write_config_word(pdev, PCI_COMMAND, pci_cmd); | |
2183 | } | |
2184 | } | |
a42a1844 | 2185 | |
08079a49 | 2186 | trans->hw_rev = iwl_read32(trans, CSR_HW_REV); |
b513ee7f LK |
2187 | /* |
2188 | * In the 8000 HW family the format of the 4 bytes of CSR_HW_REV have | |
2189 | * changed, and now the revision step also includes bit 0-1 (no more | |
2190 | * "dash" value). To keep hw_rev backwards compatible - we'll store it | |
2191 | * in the old format. | |
2192 | */ | |
2193 | if (trans->cfg->device_family == IWL_DEVICE_FAMILY_8000) | |
2194 | trans->hw_rev = (trans->hw_rev & 0xfff0) | | |
1fc0e221 | 2195 | (CSR_HW_REV_STEP(trans->hw_rev << 2) << 2); |
b513ee7f | 2196 | |
99673ee5 | 2197 | trans->hw_id = (pdev->device << 16) + pdev->subsystem_device; |
9ca85961 EG |
2198 | snprintf(trans->hw_id_str, sizeof(trans->hw_id_str), |
2199 | "PCI ID: 0x%04X:0x%04X", pdev->device, pdev->subsystem_device); | |
a42a1844 | 2200 | |
69a10b29 | 2201 | /* Initialize the wait queue for commands */ |
f946b529 | 2202 | init_waitqueue_head(&trans_pcie->wait_command_queue); |
69a10b29 | 2203 | |
3ec45882 JB |
2204 | snprintf(trans->dev_cmd_pool_name, sizeof(trans->dev_cmd_pool_name), |
2205 | "iwl_cmd_pool:%s", dev_name(trans->dev)); | |
59c647b6 EG |
2206 | |
2207 | trans->dev_cmd_headroom = 0; | |
2208 | trans->dev_cmd_pool = | |
3ec45882 | 2209 | kmem_cache_create(trans->dev_cmd_pool_name, |
59c647b6 EG |
2210 | sizeof(struct iwl_device_cmd) |
2211 | + trans->dev_cmd_headroom, | |
2212 | sizeof(void *), | |
2213 | SLAB_HWCACHE_ALIGN, | |
2214 | NULL); | |
2215 | ||
6965a354 LC |
2216 | if (!trans->dev_cmd_pool) { |
2217 | err = -ENOMEM; | |
59c647b6 | 2218 | goto out_pci_disable_msi; |
6965a354 | 2219 | } |
59c647b6 | 2220 | |
a8b691e6 JB |
2221 | if (iwl_pcie_alloc_ict(trans)) |
2222 | goto out_free_cmd_pool; | |
2223 | ||
85bf9da1 | 2224 | err = request_threaded_irq(pdev->irq, iwl_pcie_isr, |
6965a354 LC |
2225 | iwl_pcie_irq_handler, |
2226 | IRQF_SHARED, DRV_NAME, trans); | |
2227 | if (err) { | |
a8b691e6 JB |
2228 | IWL_ERR(trans, "Error allocating IRQ %d\n", pdev->irq); |
2229 | goto out_free_ict; | |
2230 | } | |
2231 | ||
83f7a85f EG |
2232 | trans_pcie->inta_mask = CSR_INI_SET_MASK; |
2233 | ||
a42a1844 EG |
2234 | return trans; |
2235 | ||
a8b691e6 JB |
2236 | out_free_ict: |
2237 | iwl_pcie_free_ict(trans); | |
2238 | out_free_cmd_pool: | |
2239 | kmem_cache_destroy(trans->dev_cmd_pool); | |
59c647b6 EG |
2240 | out_pci_disable_msi: |
2241 | pci_disable_msi(pdev); | |
a42a1844 EG |
2242 | out_pci_release_regions: |
2243 | pci_release_regions(pdev); | |
2244 | out_pci_disable_device: | |
2245 | pci_disable_device(pdev); | |
2246 | out_no_pci: | |
2247 | kfree(trans); | |
6965a354 LC |
2248 | out: |
2249 | return ERR_PTR(err); | |
a42a1844 | 2250 | } |