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@@ -1,428 +0,0 @@
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-/*
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- * Copyright (c) 2013-2021 The Linux Foundation. All rights reserved.
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- *
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- * Permission to use, copy, modify, and/or distribute this software for
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- * any purpose with or without fee is hereby granted, provided that the
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- * above copyright notice and this permission notice appear in all
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- * copies.
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- *
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- * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL
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- * WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED
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- * WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE
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- * AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
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- * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
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- * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
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- * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
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- * PERFORMANCE OF THIS SOFTWARE.
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- */
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-
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-/**
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- * DOC: if_ahb_reset.c
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- *
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- * c file for ahb ipq4019 specific implementations.
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- */
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-
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-#include "hif.h"
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-#include "target_type.h"
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-#include "hif_main.h"
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-#include "hif_debug.h"
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-#include "hif_io32.h"
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-#include "ce_main.h"
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-#include "ce_tasklet.h"
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-#include "ahb_api.h"
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-#include "if_ahb.h"
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-#include "qal_vbus_dev.h"
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-#include "qal_devnode.h"
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-
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-#include <linux/clk.h>
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-#include <linux/of_address.h>
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-#include <linux/platform_device.h>
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-#include <linux/device.h>
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-#include <linux/of.h>
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-#if LINUX_VERSION_CODE >= KERNEL_VERSION(3, 9, 0)
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-#include <linux/reset.h>
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-#endif
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-
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-/**
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- * clk_enable_disable() - Enable/disable clock
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- * @dev : pointer to device structure
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- * @str : clock name
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- * @enable : should be true, if the clock needs to be enabled
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- * should be false, if the clock needs to be enabled
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- *
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- * This is a helper function for hif_ahb_clk_enable_disable to enable
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- * disable clocks.
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- * clk_prepare_enable will enable the clock
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- * clk_disable_unprepare will disable the clock
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- *
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- * Return: zero on success, non-zero incase of error.
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- */
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-
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-static int clk_enable_disable(struct device *dev, const char *str, int enable)
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-{
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- struct clk *clk_t = NULL;
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- int ret;
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- QDF_STATUS status;
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-
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- clk_t = clk_get(dev, str);
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- if (IS_ERR(clk_t)) {
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- hif_err("Failed to get %s clk %ld", str, PTR_ERR(clk_t));
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- return -EFAULT;
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- }
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- if (true == enable) {
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- /* Prepare and Enable clk */
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- status = qal_vbus_enable_devclk((struct qdf_dev_clk *)clk_t);
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- ret = qdf_status_to_os_return(status);
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- if (ret) {
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- hif_err("enabling clk: %s, error: %d", str, ret);
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- }
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- } else {
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- /* Disable and unprepare clk */
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- status = qal_vbus_disable_devclk((struct qdf_dev_clk *)clk_t);
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- ret = qdf_status_to_os_return(status);
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- }
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- return ret;
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-}
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-
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-
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-/**
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- * hif_ahb_clk_enable_disable() - Enable/disable ahb clock
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- * @dev : pointer to device structure
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- * @enable : should be true, if the clock needs to be enabled
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- * should be false, if the clock needs to be enabled
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- *
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- * This functions helps to enable/disable all the necesasary clocks
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- * for bus access.
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- *
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- * Return: zero on success, non-zero incase of error
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- */
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-int hif_ahb_clk_enable_disable(struct device *dev, int enable)
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-{
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- int ret;
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-
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- ret = clk_enable_disable(dev, "wifi_wcss_cmd", enable);
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- if (ret)
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- return ret;
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- ret = clk_enable_disable(dev, "wifi_wcss_ref", enable);
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- if (ret)
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- return ret;
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- ret = clk_enable_disable(dev, "wifi_wcss_rtc", enable);
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- if (ret)
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- return ret;
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- return 0;
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-}
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-
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-/**
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- * hif_enable_radio() - Enable the target radio.
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- * @sc : pointer to the hif context
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- *
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- * This function helps to release the target from reset state
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- *
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- * Return : zero on success, non-zero incase of error.
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- */
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-#if LINUX_VERSION_CODE >= KERNEL_VERSION(3, 9, 0)
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-int hif_ahb_enable_radio(struct hif_pci_softc *sc,
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- struct platform_device *pdev,
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- const struct platform_device_id *id)
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-{
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- struct reset_control *reset_ctl = NULL;
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- uint32_t msi_addr, msi_base, wifi_core_id;
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- struct hif_softc *scn = HIF_GET_SOFTC(sc);
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- struct device_node *dev_node = pdev->dev.of_node;
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- bool msienable = false;
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- int ret = 0;
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- struct qdf_vbus_rstctl *vrstctl = NULL;
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-
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- ret = qal_devnode_read_u32(dev_node, "qca,msi_addr", &msi_addr);
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- if (ret) {
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- hif_err("Unable to get msi_addr - error :%d", ret);
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- return -EIO;
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- }
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- ret = qal_devnode_read_u32(dev_node, "qca,msi_base", &msi_base);
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- if (ret) {
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- hif_err("Unable to get msi_base - error: %d", ret);
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- return -EIO;
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- }
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- ret = qal_devnode_read_u32(dev_node, "core-id", &wifi_core_id);
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- if (ret) {
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- hif_err("Unable to get core-id - error: %d", ret);
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- return -EIO;
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- }
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-
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- /* Program the above values into Wifi scratch regists */
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- if (msienable) {
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- hif_write32_mb(sc, sc->mem + FW_AXI_MSI_ADDR, msi_addr);
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- hif_write32_mb(sc, sc->mem + FW_AXI_MSI_DATA, msi_base);
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- }
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-
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- /* TBD: Temporary changes. Frequency should be
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- * retrieved through clk_xxx once kernel GCC driver is available
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- */
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- {
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- void __iomem *mem_gcc;
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- uint32_t clk_sel;
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- uint32_t gcc_fepll_pll_div;
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- uint32_t wifi_cpu_freq[4] = {266700000, 250000000, 222200000,
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- 200000000};
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- uint32_t current_freq = 0;
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-
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- /* Enable WIFI clock input */
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- if (scn->target_info.target_type == TARGET_TYPE_IPQ4019) {
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- ret = hif_ahb_clk_enable_disable(&pdev->dev, 1);
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- if (ret) {
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- hif_err("Error while enabling clock :%d", ret);
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- return ret;
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- }
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- }
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-
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- mem_gcc = ioremap_nocache(GCC_BASE, GCC_SIZE);
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- if (IS_ERR(mem_gcc)) {
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- hif_err("GCC ioremap failed");
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- return PTR_ERR(mem_gcc);
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- }
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- gcc_fepll_pll_div = hif_read32_mb(sc, mem_gcc +
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- GCC_FEPLL_PLL_DIV);
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- clk_sel = (wifi_core_id == 0) ? ((gcc_fepll_pll_div &
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- GCC_FEPLL_PLL_CLK_WIFI_0_SEL_MASK) >>
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- GCC_FEPLL_PLL_CLK_WIFI_0_SEL_SHIFT) :
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- ((gcc_fepll_pll_div & GCC_FEPLL_PLL_CLK_WIFI_1_SEL_MASK)
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- >> GCC_FEPLL_PLL_CLK_WIFI_1_SEL_SHIFT);
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- current_freq = wifi_cpu_freq[clk_sel];
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-
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- hif_debug("Wifi%d CPU frequency %u", wifi_core_id, current_freq);
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- hif_write32_mb(sc, sc->mem + FW_CPU_PLL_CONFIG,
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- gcc_fepll_pll_div);
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- iounmap(mem_gcc);
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- }
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-
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- /* De-assert radio cold reset */
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- qal_vbus_get_dev_rstctl((struct qdf_pfm_hndl *)&pdev->dev,
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- "wifi_radio_cold", &vrstctl);
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- reset_ctl = (struct reset_control *)vrstctl;
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- if (IS_ERR(reset_ctl)) {
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- hif_err("Failed to get radio cold reset control");
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- ret = PTR_ERR(reset_ctl);
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- goto err_reset;
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- }
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- qal_vbus_deactivate_dev_rstctl((struct qdf_pfm_hndl *)&pdev->dev,
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- (struct qdf_vbus_rstctl *)reset_ctl);
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- qal_vbus_release_dev_rstctl((struct qdf_pfm_hndl *)&pdev->dev,
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- (struct qdf_vbus_rstctl *)reset_ctl);
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-
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- /* De-assert radio warm reset */
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- qal_vbus_get_dev_rstctl((struct qdf_pfm_hndl *)&pdev->dev,
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- "wifi_radio_warm", &vrstctl);
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- reset_ctl = (struct reset_control *)vrstctl;
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- if (IS_ERR(reset_ctl)) {
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- hif_err("Failed to get radio warm reset control");
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- ret = PTR_ERR(reset_ctl);
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- goto err_reset;
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- }
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- qal_vbus_deactivate_dev_rstctl((struct qdf_pfm_hndl *)&pdev->dev,
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- (struct qdf_vbus_rstctl *)reset_ctl);
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- qal_vbus_release_dev_rstctl((struct qdf_pfm_hndl *)&pdev->dev,
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- (struct qdf_vbus_rstctl *)reset_ctl);
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-
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- /* De-assert radio srif reset */
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- qal_vbus_get_dev_rstctl((struct qdf_pfm_hndl *)&pdev->dev,
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- "wifi_radio_srif", &vrstctl);
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- reset_ctl = (struct reset_control *)vrstctl;
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- if (IS_ERR(reset_ctl)) {
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- hif_err("Failed to get radio srif reset control");
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- ret = PTR_ERR(reset_ctl);
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- goto err_reset;
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- }
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- qal_vbus_deactivate_dev_rstctl((struct qdf_pfm_hndl *)&pdev->dev,
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- (struct qdf_vbus_rstctl *)reset_ctl);
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- qal_vbus_release_dev_rstctl((struct qdf_pfm_hndl *)&pdev->dev,
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- (struct qdf_vbus_rstctl *)reset_ctl);
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-
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- /* De-assert target CPU reset */
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- qal_vbus_get_dev_rstctl((struct qdf_pfm_hndl *)&pdev->dev,
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- "wifi_cpu_init", &vrstctl);
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- reset_ctl = (struct reset_control *)vrstctl;
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- if (IS_ERR(reset_ctl)) {
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- hif_err("Failed to get cpu init reset control");
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- ret = PTR_ERR(reset_ctl);
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- goto err_reset;
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- }
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- qal_vbus_deactivate_dev_rstctl((struct qdf_pfm_hndl *)&pdev->dev,
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- (struct qdf_vbus_rstctl *)reset_ctl);
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- qal_vbus_release_dev_rstctl((struct qdf_pfm_hndl *)&pdev->dev,
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- (struct qdf_vbus_rstctl *)reset_ctl);
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-
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- return 0;
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-
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-err_reset:
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- return -EIO;
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-}
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-#else
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-int hif_ahb_enable_radio(struct hif_pci_softc *sc,
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- struct platform_device *pdev,
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- const struct platform_device_id *id)
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-{
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- qdf_print("%s:%d:Reset routines not available in kernel version.",
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- __func__, __LINE__);
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- return -EIO;
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-}
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-#endif
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-
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-/* "wifi_core_warm" is the other reset type */
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-#define AHB_RESET_TYPE "wifi_core_cold"
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-
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-/**
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- * hif_ahb_device_reset() - Disable the radio and held the radio is reset state.
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- * @scn : pointer to the hif context
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- *
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- * This function will hold the target in reset state.
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- * Will be called while unload the driver or any graceful unload path.
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- *
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- * Return : n/a.
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- */
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-#if LINUX_VERSION_CODE >= KERNEL_VERSION(3, 9, 0)
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-void hif_ahb_device_reset(struct hif_softc *scn)
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-{
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- struct reset_control *resetctl = NULL;
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- struct reset_control *core_resetctl = NULL;
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- struct hif_pci_softc *sc = HIF_GET_PCI_SOFTC(scn);
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- struct platform_device *pdev = (struct platform_device *)(sc->pdev);
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- uint32_t glb_cfg_offset;
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- uint32_t haltreq_offset;
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- uint32_t haltack_offset;
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- void __iomem *mem_tcsr;
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- uint32_t wifi_core_id = 0XFFFFFFFF;
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- uint32_t reg_value;
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- int wait_limit = ATH_AHB_RESET_WAIT_MAX;
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- struct qdf_vbus_rstctl *vrstctl = NULL;
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-
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-
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- wifi_core_id = hif_read32_mb(sc, sc->mem +
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- WLAN_SUBSYSTEM_CORE_ID_ADDRESS);
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- glb_cfg_offset = (wifi_core_id == 0) ? TCSR_WIFI0_GLB_CFG :
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- TCSR_WIFI1_GLB_CFG;
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- haltreq_offset = (wifi_core_id == 0) ? TCSR_WCSS0_HALTREQ :
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- TCSR_WCSS1_HALTREQ;
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- haltack_offset = (wifi_core_id == 0) ? TCSR_WCSS0_HALTACK :
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- TCSR_WCSS1_HALTACK;
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-
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- mem_tcsr = ioremap_nocache(TCSR_BASE, TCSR_SIZE);
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- if (IS_ERR(mem_tcsr)) {
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- hif_err("TCSR ioremap failed");
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- return;
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- }
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- reg_value = hif_read32_mb(sc, mem_tcsr + haltreq_offset);
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- hif_write32_mb(sc, mem_tcsr + haltreq_offset, reg_value | 0x1);
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- /* Wait for halt ack before asserting reset */
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- while (wait_limit) {
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-
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- if (hif_read32_mb(sc, mem_tcsr + haltack_offset) & 0x1)
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- break;
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-
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- qdf_mdelay(1);
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- wait_limit--;
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- }
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-
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- reg_value = hif_read32_mb(sc, mem_tcsr + glb_cfg_offset);
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- hif_write32_mb(sc, mem_tcsr + glb_cfg_offset, reg_value | (1 << 25));
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-
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- qal_vbus_get_dev_rstctl((struct qdf_pfm_hndl *)&pdev->dev,
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- AHB_RESET_TYPE, &vrstctl);
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- core_resetctl = (struct reset_control *)vrstctl;
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- if (IS_ERR(core_resetctl)) {
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- hif_err("Failed to get wifi core cold reset control");
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- return;
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- }
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-
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- /* Reset wifi core */
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- qal_vbus_activate_dev_rstctl((struct qdf_pfm_hndl *)&pdev->dev,
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- (struct qdf_vbus_rstctl *)core_resetctl);
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-
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- /* TBD: Check if we should also assert other bits (radio_cold, radio_
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- * warm, radio_srif, cpu_ini)
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- */
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- qdf_mdelay(1); /* TBD: Get reqd delay from HW team */
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-
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- /* Assert radio cold reset */
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- qal_vbus_get_dev_rstctl((struct qdf_pfm_hndl *)&pdev->dev,
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- "wifi_radio_cold", &vrstctl);
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- resetctl = (struct reset_control *)vrstctl;
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- if (IS_ERR(resetctl)) {
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- hif_err("Failed to get radio cold reset control");
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- return;
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- }
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- qal_vbus_activate_dev_rstctl((struct qdf_pfm_hndl *)&pdev->dev,
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- (struct qdf_vbus_rstctl *)resetctl);
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- qdf_mdelay(1); /* TBD: Get reqd delay from HW team */
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- qal_vbus_release_dev_rstctl((struct qdf_pfm_hndl *)&pdev->dev,
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- (struct qdf_vbus_rstctl *)resetctl);
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-
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- /* Assert radio warm reset */
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- qal_vbus_get_dev_rstctl((struct qdf_pfm_hndl *)&pdev->dev,
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- "wifi_radio_warm", &vrstctl);
|
|
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- resetctl = (struct reset_control *)vrstctl;
|
|
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- if (IS_ERR(resetctl)) {
|
|
|
- hif_err("Failed to get radio warm reset control");
|
|
|
- return;
|
|
|
- }
|
|
|
- qal_vbus_activate_dev_rstctl((struct qdf_pfm_hndl *)&pdev->dev,
|
|
|
- (struct qdf_vbus_rstctl *)resetctl);
|
|
|
- qdf_mdelay(1); /* TBD: Get reqd delay from HW team */
|
|
|
- qal_vbus_release_dev_rstctl((struct qdf_pfm_hndl *)&pdev->dev,
|
|
|
- (struct qdf_vbus_rstctl *)resetctl);
|
|
|
-
|
|
|
- /* Assert radio srif reset */
|
|
|
- qal_vbus_get_dev_rstctl((struct qdf_pfm_hndl *)&pdev->dev,
|
|
|
- "wifi_radio_srif", &vrstctl);
|
|
|
- resetctl = (struct reset_control *)vrstctl;
|
|
|
- if (IS_ERR(resetctl)) {
|
|
|
- hif_err("Failed to get radio srif reset control");
|
|
|
- return;
|
|
|
- }
|
|
|
- qal_vbus_activate_dev_rstctl((struct qdf_pfm_hndl *)&pdev->dev,
|
|
|
- (struct qdf_vbus_rstctl *)resetctl);
|
|
|
- qdf_mdelay(1); /* TBD: Get reqd delay from HW team */
|
|
|
- qal_vbus_release_dev_rstctl((struct qdf_pfm_hndl *)&pdev->dev,
|
|
|
- (struct qdf_vbus_rstctl *)resetctl);
|
|
|
-
|
|
|
- /* Assert target CPU reset */
|
|
|
- qal_vbus_get_dev_rstctl((struct qdf_pfm_hndl *)&pdev->dev,
|
|
|
- "wifi_cpu_init", &vrstctl);
|
|
|
- resetctl = (struct reset_control *)vrstctl;
|
|
|
- if (IS_ERR(resetctl)) {
|
|
|
- hif_err("Failed to get cpu init reset control");
|
|
|
- return;
|
|
|
- }
|
|
|
- qal_vbus_activate_dev_rstctl((struct qdf_pfm_hndl *)&pdev->dev,
|
|
|
- (struct qdf_vbus_rstctl *)resetctl);
|
|
|
- qdf_mdelay(10); /* TBD: Get reqd delay from HW team */
|
|
|
- qal_vbus_release_dev_rstctl((struct qdf_pfm_hndl *)&pdev->dev,
|
|
|
- (struct qdf_vbus_rstctl *)resetctl);
|
|
|
-
|
|
|
- /* Clear gbl_cfg and haltreq before clearing Wifi core reset */
|
|
|
- reg_value = hif_read32_mb(sc, mem_tcsr + haltreq_offset);
|
|
|
- hif_write32_mb(sc, mem_tcsr + haltreq_offset, reg_value & ~0x1);
|
|
|
- reg_value = hif_read32_mb(sc, mem_tcsr + glb_cfg_offset);
|
|
|
- hif_write32_mb(sc, mem_tcsr + glb_cfg_offset, reg_value & ~(1 << 25));
|
|
|
-
|
|
|
- /* de-assert wifi core reset */
|
|
|
- qal_vbus_deactivate_dev_rstctl((struct qdf_pfm_hndl *)&pdev->dev,
|
|
|
- (struct qdf_vbus_rstctl *)core_resetctl);
|
|
|
-
|
|
|
- qdf_mdelay(1); /* TBD: Get reqd delay from HW team */
|
|
|
-
|
|
|
- /* TBD: Check if we should de-assert other bits here */
|
|
|
- qal_vbus_release_dev_rstctl((struct qdf_pfm_hndl *)&pdev->dev,
|
|
|
- (struct qdf_vbus_rstctl *)core_resetctl);
|
|
|
- iounmap(mem_tcsr);
|
|
|
- hif_info("Reset complete for wifi core id: %d", wifi_core_id);
|
|
|
-}
|
|
|
-#else
|
|
|
-void hif_ahb_device_reset(struct hif_softc *scn)
|
|
|
-{
|
|
|
- qdf_print("%s:%d:Reset routines not available in kernel version.",
|
|
|
- __func__, __LINE__);
|
|
|
-}
|
|
|
-#endif
|
|
|
-
|
|
|
-
|
|
|
-
|
Naveen S