pci.c (44cc24b04bed578e32a4334cacf95799335b3274) pci.c (96527d527b271d950367ad13e3de8b0673545622)
1// SPDX-License-Identifier: BSD-3-Clause-Clear
2/*
3 * Copyright (c) 2019-2020 The Linux Foundation. All rights reserved.
4 */
5
6#include <linux/module.h>
7#include <linux/msi.h>
8#include <linux/pci.h>

--- 841 unchanged lines hidden (view full) ---

850
851 for (i = 0; i < ab->hw_params.ce_count; i++) {
852 if (ath11k_ce_get_attr_flags(ab, i) & CE_ATTR_DIS_INTR)
853 continue;
854 ath11k_pci_ce_irq_enable(ab, i);
855 }
856}
857
1// SPDX-License-Identifier: BSD-3-Clause-Clear
2/*
3 * Copyright (c) 2019-2020 The Linux Foundation. All rights reserved.
4 */
5
6#include <linux/module.h>
7#include <linux/msi.h>
8#include <linux/pci.h>

--- 841 unchanged lines hidden (view full) ---

850
851 for (i = 0; i < ab->hw_params.ce_count; i++) {
852 if (ath11k_ce_get_attr_flags(ab, i) & CE_ATTR_DIS_INTR)
853 continue;
854 ath11k_pci_ce_irq_enable(ab, i);
855 }
856}
857
858static int ath11k_pci_enable_msi(struct ath11k_pci *ab_pci)
858static void ath11k_pci_msi_config(struct ath11k_pci *ab_pci, bool enable)
859{
859{
860 struct pci_dev *dev = ab_pci->pdev;
861 u16 control;
862
863 pci_read_config_word(dev, dev->msi_cap + PCI_MSI_FLAGS, &control);
864
865 if (enable)
866 control |= PCI_MSI_FLAGS_ENABLE;
867 else
868 control &= ~PCI_MSI_FLAGS_ENABLE;
869
870 pci_write_config_word(dev, dev->msi_cap + PCI_MSI_FLAGS, control);
871}
872
873static void ath11k_pci_msi_enable(struct ath11k_pci *ab_pci)
874{
875 ath11k_pci_msi_config(ab_pci, true);
876}
877
878static void ath11k_pci_msi_disable(struct ath11k_pci *ab_pci)
879{
880 ath11k_pci_msi_config(ab_pci, false);
881}
882
883static int ath11k_pci_alloc_msi(struct ath11k_pci *ab_pci)
884{
860 struct ath11k_base *ab = ab_pci->ab;
861 const struct ath11k_msi_config *msi_config = ab_pci->msi_config;
862 struct msi_desc *msi_desc;
863 int num_vectors;
864 int ret;
865
866 num_vectors = pci_alloc_irq_vectors(ab_pci->pdev,
867 msi_config->total_vectors,
868 msi_config->total_vectors,
869 PCI_IRQ_MSI);
870 if (num_vectors != msi_config->total_vectors) {
871 ath11k_err(ab, "failed to get %d MSI vectors, only %d available",
872 msi_config->total_vectors, num_vectors);
873
874 if (num_vectors >= 0)
875 return -EINVAL;
876 else
877 return num_vectors;
878 }
885 struct ath11k_base *ab = ab_pci->ab;
886 const struct ath11k_msi_config *msi_config = ab_pci->msi_config;
887 struct msi_desc *msi_desc;
888 int num_vectors;
889 int ret;
890
891 num_vectors = pci_alloc_irq_vectors(ab_pci->pdev,
892 msi_config->total_vectors,
893 msi_config->total_vectors,
894 PCI_IRQ_MSI);
895 if (num_vectors != msi_config->total_vectors) {
896 ath11k_err(ab, "failed to get %d MSI vectors, only %d available",
897 msi_config->total_vectors, num_vectors);
898
899 if (num_vectors >= 0)
900 return -EINVAL;
901 else
902 return num_vectors;
903 }
904 ath11k_pci_msi_disable(ab_pci);
879
880 msi_desc = irq_get_msi_desc(ab_pci->pdev->irq);
881 if (!msi_desc) {
882 ath11k_err(ab, "msi_desc is NULL!\n");
883 ret = -EINVAL;
884 goto free_msi_vector;
885 }
886

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893 return 0;
894
895free_msi_vector:
896 pci_free_irq_vectors(ab_pci->pdev);
897
898 return ret;
899}
900
905
906 msi_desc = irq_get_msi_desc(ab_pci->pdev->irq);
907 if (!msi_desc) {
908 ath11k_err(ab, "msi_desc is NULL!\n");
909 ret = -EINVAL;
910 goto free_msi_vector;
911 }
912

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919 return 0;
920
921free_msi_vector:
922 pci_free_irq_vectors(ab_pci->pdev);
923
924 return ret;
925}
926
901static void ath11k_pci_disable_msi(struct ath11k_pci *ab_pci)
927static void ath11k_pci_free_msi(struct ath11k_pci *ab_pci)
902{
903 pci_free_irq_vectors(ab_pci->pdev);
904}
905
906static int ath11k_pci_claim(struct ath11k_pci *ab_pci, struct pci_dev *pdev)
907{
908 struct ath11k_base *ab = ab_pci->ab;
909 u16 device_id;

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1014 clear_bit(ATH11K_PCI_FLAG_INIT_DONE, &ab_pci->flags);
1015 ath11k_pci_sw_reset(ab_pci->ab, true);
1016
1017 /* Disable ASPM during firmware download due to problems switching
1018 * to AMSS state.
1019 */
1020 ath11k_pci_aspm_disable(ab_pci);
1021
928{
929 pci_free_irq_vectors(ab_pci->pdev);
930}
931
932static int ath11k_pci_claim(struct ath11k_pci *ab_pci, struct pci_dev *pdev)
933{
934 struct ath11k_base *ab = ab_pci->ab;
935 u16 device_id;

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1040 clear_bit(ATH11K_PCI_FLAG_INIT_DONE, &ab_pci->flags);
1041 ath11k_pci_sw_reset(ab_pci->ab, true);
1042
1043 /* Disable ASPM during firmware download due to problems switching
1044 * to AMSS state.
1045 */
1046 ath11k_pci_aspm_disable(ab_pci);
1047
1048 ath11k_pci_msi_enable(ab_pci);
1049
1022 ret = ath11k_mhi_start(ab_pci);
1023 if (ret) {
1024 ath11k_err(ab, "failed to start mhi: %d\n", ret);
1025 return ret;
1026 }
1027
1028 if (ab->bus_params.static_window_map)
1029 ath11k_pci_select_static_window(ab_pci);

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1034static void ath11k_pci_power_down(struct ath11k_base *ab)
1035{
1036 struct ath11k_pci *ab_pci = ath11k_pci_priv(ab);
1037
1038 /* restore aspm in case firmware bootup fails */
1039 ath11k_pci_aspm_restore(ab_pci);
1040
1041 ath11k_pci_force_wake(ab_pci->ab);
1050 ret = ath11k_mhi_start(ab_pci);
1051 if (ret) {
1052 ath11k_err(ab, "failed to start mhi: %d\n", ret);
1053 return ret;
1054 }
1055
1056 if (ab->bus_params.static_window_map)
1057 ath11k_pci_select_static_window(ab_pci);

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1062static void ath11k_pci_power_down(struct ath11k_base *ab)
1063{
1064 struct ath11k_pci *ab_pci = ath11k_pci_priv(ab);
1065
1066 /* restore aspm in case firmware bootup fails */
1067 ath11k_pci_aspm_restore(ab_pci);
1068
1069 ath11k_pci_force_wake(ab_pci->ab);
1070
1071 ath11k_pci_msi_disable(ab_pci);
1072
1042 ath11k_mhi_stop(ab_pci);
1043 clear_bit(ATH11K_PCI_FLAG_INIT_DONE, &ab_pci->flags);
1044 ath11k_pci_sw_reset(ab_pci->ab, false);
1045}
1046
1047static int ath11k_pci_hif_suspend(struct ath11k_base *ab)
1048{
1049 struct ath11k_pci *ar_pci = ath11k_pci_priv(ab);

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1258 break;
1259 default:
1260 dev_err(&pdev->dev, "Unknown PCI device found: 0x%x\n",
1261 pci_dev->device);
1262 ret = -EOPNOTSUPP;
1263 goto err_pci_free_region;
1264 }
1265
1073 ath11k_mhi_stop(ab_pci);
1074 clear_bit(ATH11K_PCI_FLAG_INIT_DONE, &ab_pci->flags);
1075 ath11k_pci_sw_reset(ab_pci->ab, false);
1076}
1077
1078static int ath11k_pci_hif_suspend(struct ath11k_base *ab)
1079{
1080 struct ath11k_pci *ar_pci = ath11k_pci_priv(ab);

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1289 break;
1290 default:
1291 dev_err(&pdev->dev, "Unknown PCI device found: 0x%x\n",
1292 pci_dev->device);
1293 ret = -EOPNOTSUPP;
1294 goto err_pci_free_region;
1295 }
1296
1266 ret = ath11k_pci_enable_msi(ab_pci);
1297 ret = ath11k_pci_alloc_msi(ab_pci);
1267 if (ret) {
1268 ath11k_err(ab, "failed to enable msi: %d\n", ret);
1269 goto err_pci_free_region;
1270 }
1271
1272 ret = ath11k_core_pre_init(ab);
1273 if (ret)
1274 goto err_pci_disable_msi;

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1312
1313err_hal_srng_deinit:
1314 ath11k_hal_srng_deinit(ab);
1315
1316err_mhi_unregister:
1317 ath11k_mhi_unregister(ab_pci);
1318
1319err_pci_disable_msi:
1298 if (ret) {
1299 ath11k_err(ab, "failed to enable msi: %d\n", ret);
1300 goto err_pci_free_region;
1301 }
1302
1303 ret = ath11k_core_pre_init(ab);
1304 if (ret)
1305 goto err_pci_disable_msi;

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1343
1344err_hal_srng_deinit:
1345 ath11k_hal_srng_deinit(ab);
1346
1347err_mhi_unregister:
1348 ath11k_mhi_unregister(ab_pci);
1349
1350err_pci_disable_msi:
1320 ath11k_pci_disable_msi(ab_pci);
1351 ath11k_pci_free_msi(ab_pci);
1321
1322err_pci_free_region:
1323 ath11k_pci_free_region(ab_pci);
1324
1325err_free_core:
1326 ath11k_core_free(ab);
1327
1328 return ret;

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1343 set_bit(ATH11K_FLAG_UNREGISTERING, &ab->dev_flags);
1344
1345 ath11k_core_deinit(ab);
1346
1347qmi_fail:
1348 ath11k_mhi_unregister(ab_pci);
1349
1350 ath11k_pci_free_irq(ab);
1352
1353err_pci_free_region:
1354 ath11k_pci_free_region(ab_pci);
1355
1356err_free_core:
1357 ath11k_core_free(ab);
1358
1359 return ret;

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1374 set_bit(ATH11K_FLAG_UNREGISTERING, &ab->dev_flags);
1375
1376 ath11k_core_deinit(ab);
1377
1378qmi_fail:
1379 ath11k_mhi_unregister(ab_pci);
1380
1381 ath11k_pci_free_irq(ab);
1351 ath11k_pci_disable_msi(ab_pci);
1382 ath11k_pci_free_msi(ab_pci);
1352 ath11k_pci_free_region(ab_pci);
1353
1354 ath11k_hal_srng_deinit(ab);
1355 ath11k_ce_free_pipes(ab);
1356 ath11k_core_free(ab);
1357}
1358
1359static void ath11k_pci_shutdown(struct pci_dev *pdev)

--- 72 unchanged lines hidden --- 		1383 ath11k_pci_free_region(ab_pci);
1384
1385 ath11k_hal_srng_deinit(ab);
1386 ath11k_ce_free_pipes(ab);
1387 ath11k_core_free(ab);
1388}
1389
1390static void ath11k_pci_shutdown(struct pci_dev *pdev)

--- 72 unchanged lines hidden ---