| /* |
| * Copyright (c) 2015 The Linux Foundation. All rights reserved. |
| * |
| * Previously licensed under the ISC license by Qualcomm Atheros, Inc. |
| * |
| * |
| * Permission to use, copy, modify, and/or distribute this software for |
| * any purpose with or without fee is hereby granted, provided that the |
| * above copyright notice and this permission notice appear in all |
| * copies. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL |
| * WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED |
| * WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE |
| * AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL |
| * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR |
| * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER |
| * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR |
| * PERFORMANCE OF THIS SOFTWARE. |
| */ |
| |
| /* |
| * This file was originally distributed by Qualcomm Atheros, Inc. |
| * under proprietary terms before Copyright ownership was assigned |
| * to the Linux Foundation. |
| */ |
| |
| /** |
| * DOC: if_snoc.c |
| * |
| * c file for snoc specif implementations. |
| */ |
| |
| #include "hif.h" |
| #include "hif_main.h" |
| #include "hif_debug.h" |
| #include "hif_io32.h" |
| #include "ce_main.h" |
| #include "ce_tasklet.h" |
| |
| /** |
| * hif_bus_prevent_linkdown(): prevent linkdown |
| * |
| * Dummy function for busses and platforms that do not support |
| * link down. This may need to be replaced with a wakelock. |
| * |
| * This is duplicated here because CONFIG_CNSS can be defined |
| * even though it is not used for the snoc bus. |
| */ |
| void hif_bus_prevent_linkdown(bool flag) |
| { |
| HIF_ERROR("wlan: %s pcie power collapse ignored", |
| (flag ? "disable" : "enable")); |
| } |
| |
| /** |
| * hif_targ_is_awake(): check if target is awake |
| * |
| * This function returns true if the target is awake |
| * |
| * @scn: struct ol_softc |
| * @mem: mapped mem base |
| * |
| * Return: bool |
| */ |
| bool hif_targ_is_awake(struct ol_softc *scn, void *__iomem *mem) |
| { |
| return true; |
| } |
| |
| /** |
| * hif_reset_soc(): reset soc |
| * |
| * this function resets soc |
| * |
| * @hif_ctx: HIF context |
| * |
| * Return: void |
| */ |
| /* Function to reset SoC */ |
| void hif_reset_soc(void *hif_ctx) |
| { |
| } |
| |
| /** |
| * hif_disable_isr(): disable isr |
| * |
| * This function disables isr and kills tasklets |
| * |
| * @hif_ctx: struct ol_softc |
| * |
| * Return: void |
| */ |
| void hif_disable_isr(void *hif_ctx) |
| { |
| struct ol_softc *scn = (struct ol_softc *)hif_ctx; |
| |
| hif_nointrs(scn); |
| ce_tasklet_kill(scn->hif_hdl); |
| cdf_atomic_set(&scn->active_tasklet_cnt, 0); |
| } |
| |
| /** |
| * dump_ce_debug_register(): dump CE debug registers |
| * |
| * This function dumps CE debug registers |
| * |
| * @scn: struct ol_softc |
| * |
| * Return: void |
| */ |
| void dump_ce_debug_register(struct ol_softc *scn) |
| { |
| return; |
| } |
| |
| /** |
| * hif_bus_suspend() - suspend the bus |
| * |
| * This function suspends the bus, but snoc doesn't need to suspend. |
| * Therefore do nothing. |
| * |
| * Return: 0 for success and non-zero for failure |
| */ |
| int hif_bus_suspend(void) |
| { |
| return 0; |
| } |
| |
| /** |
| * hif_bus_resume() - hif resume API |
| * |
| * This function resumes the bus. but snoc doesn't need to resume. |
| * Therefore do nothing. |
| * |
| * Return: 0 for success and non-zero for failure |
| */ |
| int hif_bus_resume(void) |
| { |
| return 0; |
| } |
| |
| /** |
| * hif_enable_power_gating(): enable HW power gating |
| * |
| * Return: n/a |
| */ |
| void hif_enable_power_gating(void *hif_ctx) |
| { |
| } |
| |
| /** |
| * hif_disable_aspm(): hif_disable_aspm |
| * |
| * Return: n/a |
| */ |
| void hif_disable_aspm(void) |
| { |
| } |
| |
| /** |
| * hif_bus_close(): hif_bus_close |
| * |
| * Return: n/a |
| */ |
| void hif_bus_close(struct ol_softc *scn) |
| { |
| } |
| |
| /** |
| * hif_bus_open(): hif_bus_open |
| * @scn: scn |
| * @bus_type: bus type |
| * |
| * Return: n/a |
| */ |
| CDF_STATUS hif_bus_open(struct ol_softc *scn, enum ath_hal_bus_type bus_type) |
| { |
| return CDF_STATUS_SUCCESS; |
| } |
| |
| /** |
| * hif_get_target_type(): Get the target type |
| * |
| * This function is used to query the target type. |
| * |
| * @ol_sc: ol_softc struct pointer |
| * @dev: device pointer |
| * @bdev: bus dev pointer |
| * @bid: bus id pointer |
| * @hif_type: HIF type such as HIF_TYPE_QCA6180 |
| * @target_type: target type such as TARGET_TYPE_QCA6180 |
| * |
| * Return: 0 for success |
| */ |
| int hif_get_target_type(struct ol_softc *ol_sc, struct device *dev, |
| void *bdev, const hif_bus_id *bid, uint32_t *hif_type, |
| uint32_t *target_type) |
| { |
| /* TODO: need to use CNSS's HW version. Hard code for now */ |
| #ifdef QCA_WIFI_3_0_ADRASTEA |
| *hif_type = HIF_TYPE_ADRASTEA; |
| *target_type = TARGET_TYPE_ADRASTEA; |
| #else |
| *hif_type = 0; |
| *target_type = 0; |
| #endif |
| return 0; |
| } |
| |
| /** |
| * hif_enable_bus(): hif_enable_bus |
| * @dev: dev |
| * @bdev: bus dev |
| * @bid: bus id |
| * @type: bus type |
| * |
| * Return: CDF_STATUS |
| */ |
| CDF_STATUS hif_enable_bus(struct ol_softc *ol_sc, |
| struct device *dev, void *bdev, |
| const hif_bus_id *bid, |
| enum hif_enable_type type) |
| { |
| int ret; |
| int hif_type; |
| int target_type; |
| ret = dma_set_mask_and_coherent(dev, DMA_BIT_MASK(32)); |
| if (ret) { |
| HIF_ERROR("%s: failed to set dma mask error = %d", |
| __func__, ret); |
| return ret; |
| } |
| |
| if (!ol_sc) { |
| HIF_ERROR("%s: hif_ctx is NULL", __func__); |
| return CDF_STATUS_E_NOMEM; |
| } |
| |
| ol_sc->aps_osdev.device = dev; |
| ol_sc->aps_osdev.bc.bc_handle = (void *)ol_sc->mem; |
| ol_sc->aps_osdev.bc.bc_bustype = type; |
| |
| ret = hif_get_target_type(ol_sc, dev, bdev, bid, |
| &hif_type, &target_type); |
| if (ret < 0) { |
| HIF_ERROR("%s: invalid device id/revision_id", __func__); |
| return CDF_STATUS_E_FAILURE; |
| } |
| |
| hif_register_tbl_attach(ol_sc, hif_type); |
| target_register_tbl_attach(ol_sc, target_type); |
| |
| HIF_TRACE("%s: X - hif_type = 0x%x, target_type = 0x%x", |
| __func__, hif_type, target_type); |
| |
| ret = hif_init_cdf_ctx(ol_sc); |
| if (ret != 0) { |
| HIF_ERROR("%s: cannot init CDF", __func__); |
| return CDF_STATUS_E_FAILURE; |
| } |
| |
| return CDF_STATUS_SUCCESS; |
| } |
| |
| /** |
| * hif_disable_bus(): hif_disable_bus |
| * |
| * This function disables the bus |
| * |
| * @bdev: bus dev |
| * |
| * Return: none |
| */ |
| void hif_disable_bus(void *bdev) |
| { |
| } |
| |
| /** |
| * hif_nointrs(): disable IRQ |
| * |
| * This function stops interrupt(s) |
| * |
| * @scn: struct ol_softc |
| * |
| * Return: none |
| */ |
| void hif_nointrs(struct ol_softc *scn) |
| { |
| if (scn->request_irq_done) { |
| ce_unregister_irq(scn->hif_hdl, 0xfff); |
| scn->request_irq_done = false; |
| } |
| } |