| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Message-ID: <20230521222852.5740-11-quic_mmanikan@quicinc.com>
Date: Mon, 22 May 2023 03:58:49 +0530
From: Manikanta Mylavarapu <quic_mmanikan@...cinc.com>
To: <agross@...nel.org>, <andersson@...nel.org>,
<konrad.dybcio@...aro.org>, <robh+dt@...nel.org>,
<krzysztof.kozlowski+dt@...aro.org>, <conor+dt@...nel.org>,
<jassisinghbrar@...il.com>, <mathieu.poirier@...aro.org>,
<mturquette@...libre.com>, <sboyd@...nel.org>,
<quic_eberman@...cinc.com>, <quic_mojha@...cinc.com>,
<kvalo@...nel.org>, <quic_mmanikan@...cinc.com>,
<loic.poulain@...aro.org>, <linux-arm-msm@...r.kernel.org>,
<devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
<linux-remoteproc@...r.kernel.org>, <linux-clk@...r.kernel.org>
CC: <quic_srichara@...cinc.com>, <quic_sjaganat@...cinc.com>,
<quic_kathirav@...cinc.com>, <quic_anusha@...cinc.com>,
<quic_poovendh@...cinc.com>, <quic_varada@...cinc.com>,
<quic_devipriy@...cinc.com>
Subject: [PATCH V2 10/13] remoteproc: qcom: Add Hexagon based multipd rproc driver
It adds support to bring up remoteproc's on multipd model.
Pd means protection domain. It's similar to process in Linux.
Here QDSP6 processor runs each wifi radio functionality on a
separate process. One process can't access other process
resources, so this is termed as PD i.e protection domain.
Here we have two pd's called root and user pd. We can correlate
Root pd as root and user pd as user in linux. Root pd has more
privileges than user pd. Root will provide services to user pd.
>From remoteproc driver perspective, root pd corresponds to QDSP6
processor bring up and user pd corresponds to Wifi radio (WCSS)
bring up.
Here WCSS(user) PD is dependent on Q6(root) PD, so first
q6 pd should be up before wcss pd. After wcss pd goes down,
q6 pd should be turned off.
IPQ5018, IPQ9574 supports multipd remoteproc driver.
Signed-off-by: Manikanta Mylavarapu <quic_mmanikan@...cinc.com>
---
Changes in V2:
- Common functionalities moved to seperate patches
- qcom_get_pd_asid() moved to mpd driver
- Last DMA block alone memset to zero
- Added diagram to show how userpd data is organized and sent to
trustzone
- Rewritten commit message since most of the content available
in cover page
- Removed 'remote_id' becuase it's not required for bring up.
drivers/remoteproc/Kconfig | 20 +
drivers/remoteproc/Makefile | 1 +
drivers/remoteproc/qcom_common.h | 9 +
drivers/remoteproc/qcom_q6v5_mpd.c | 677 ++++++++++++++++++++++++++++
drivers/soc/qcom/mdt_loader.c | 332 ++++++++++++++
include/linux/soc/qcom/mdt_loader.h | 19 +
6 files changed, 1058 insertions(+)
create mode 100644 drivers/remoteproc/qcom_q6v5_mpd.c
diff --git a/drivers/remoteproc/Kconfig b/drivers/remoteproc/Kconfig
index a850e9f486dd..44af5c36f67e 100644
--- a/drivers/remoteproc/Kconfig
+++ b/drivers/remoteproc/Kconfig
@@ -234,6 +234,26 @@ config QCOM_Q6V5_PAS
CDSP (Compute DSP), MPSS (Modem Peripheral SubSystem), and
SLPI (Sensor Low Power Island).
+config QCOM_Q6V5_MPD
+ tristate "Qualcomm Hexagon based MPD model Peripheral Image Loader"
+ depends on OF && ARCH_QCOM
+ depends on QCOM_SMEM
+ depends on RPMSG_QCOM_SMD || RPMSG_QCOM_SMD=n
+ depends on RPMSG_QCOM_GLINK_SMEM || RPMSG_QCOM_GLINK_SMEM=n
+ depends on QCOM_SYSMON || QCOM_SYSMON=n
+ depends on RPMSG_QCOM_GLINK || RPMSG_QCOM_GLINK=n
+ depends on QCOM_AOSS_QMP || QCOM_AOSS_QMP=n
+ select MFD_SYSCON
+ select QCOM_MDT_LOADER
+ select QCOM_PIL_INFO
+ select QCOM_Q6V5_COMMON
+ select QCOM_RPROC_COMMON
+ select QCOM_SCM
+ help
+ Say y here to support the Qualcomm Secure Peripheral Image Loader
+ for the Hexagon based MultiPD model remote processors on e.g. IPQ5018.
+ This is trustZone wireless subsystem.
+
config QCOM_Q6V5_WCSS
tristate "Qualcomm Hexagon based WCSS Peripheral Image Loader"
depends on OF && ARCH_QCOM
diff --git a/drivers/remoteproc/Makefile b/drivers/remoteproc/Makefile
index 91314a9b43ce..b64051080ec1 100644
--- a/drivers/remoteproc/Makefile
+++ b/drivers/remoteproc/Makefile
@@ -25,6 +25,7 @@ obj-$(CONFIG_QCOM_PIL_INFO) += qcom_pil_info.o
obj-$(CONFIG_QCOM_RPROC_COMMON) += qcom_common.o
obj-$(CONFIG_QCOM_Q6V5_COMMON) += qcom_q6v5.o
obj-$(CONFIG_QCOM_Q6V5_ADSP) += qcom_q6v5_adsp.o
+obj-$(CONFIG_QCOM_Q6V5_MPD) += qcom_q6v5_mpd.o
obj-$(CONFIG_QCOM_Q6V5_MSS) += qcom_q6v5_mss.o
obj-$(CONFIG_QCOM_Q6V5_PAS) += qcom_q6v5_pas.o
obj-$(CONFIG_QCOM_Q6V5_WCSS) += qcom_q6v5_wcss.o
diff --git a/drivers/remoteproc/qcom_common.h b/drivers/remoteproc/qcom_common.h
index 9ef4449052a9..9d9e08aac6ef 100644
--- a/drivers/remoteproc/qcom_common.h
+++ b/drivers/remoteproc/qcom_common.h
@@ -76,4 +76,13 @@ static inline bool qcom_sysmon_shutdown_acked(struct qcom_sysmon *sysmon)
}
#endif
+#if IS_ENABLED(CONFIG_QCOM_Q6V5_MPD)
+s8 qcom_get_pd_asid(struct device_node *node);
+#else
+static inline s8 qcom_get_pd_asid(struct device_node *node)
+{
+ return 0;
+}
+#endif
+
#endif
diff --git a/drivers/remoteproc/qcom_q6v5_mpd.c b/drivers/remoteproc/qcom_q6v5_mpd.c
new file mode 100644
index 000000000000..959143960350
--- /dev/null
+++ b/drivers/remoteproc/qcom_q6v5_mpd.c
@@ -0,0 +1,677 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2016-2018 Linaro Ltd.
+ * Copyright (C) 2014 Sony Mobile Communications AB
+ * Copyright (c) 2012-2018, 2021 The Linux Foundation. All rights reserved.
+ */
+#include <linux/clk.h>
+#include <linux/delay.h>
+#include <linux/firmware/qcom/qcom_scm.h>
+#include <linux/interrupt.h>
+#include <linux/io.h>
+#include <linux/iopoll.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/of_address.h>
+#include <linux/of_device.h>
+#include <linux/of_reserved_mem.h>
+#include <linux/platform_device.h>
+#include <linux/reset.h>
+#include <linux/soc/qcom/mdt_loader.h>
+#include <linux/soc/qcom/smem.h>
+#include <linux/soc/qcom/smem_state.h>
+#include "qcom_common.h"
+#include "qcom_q6v5.h"
+
+#include "remoteproc_internal.h"
+
+#define WCSS_CRASH_REASON 421
+#define WCSS_SMEM_HOST 1
+
+#define WCNSS_PAS_ID 6
+#define MPD_WCNSS_PAS_ID 0xD
+
+#define BUF_SIZE 35
+
+#define MAX_FIRMWARE 3
+/**
+ * enum state - state of a wcss (private)
+ * @WCSS_NORMAL: subsystem is operating normally
+ * @WCSS_SHUTDOWN: subsystem has been shutdown
+ *
+ */
+enum q6_wcss_state {
+ WCSS_NORMAL,
+ WCSS_SHUTDOWN,
+};
+
+enum {
+ Q6_IPQ,
+ WCSS_AHB_IPQ,
+ WCSS_PCIE_IPQ,
+};
+
+struct q6_wcss {
+ struct device *dev;
+ struct qcom_rproc_glink glink_subdev;
+ struct qcom_rproc_ssr ssr_subdev;
+ struct qcom_q6v5 q6;
+ phys_addr_t mem_phys;
+ phys_addr_t mem_reloc;
+ void *mem_region;
+ size_t mem_size;
+ int crash_reason_smem;
+ s8 pd_asid;
+ enum q6_wcss_state state;
+ const struct wcss_data *desc;
+ const char **firmware;
+};
+
+struct wcss_data {
+ int (*init_irq)(struct qcom_q6v5 *q6, struct platform_device *pdev,
+ struct rproc *rproc, int crash_reason,
+ const char *load_state,
+ void (*handover)(struct qcom_q6v5 *q6));
+ int crash_reason_smem;
+ u32 version;
+ const char *ssr_name;
+ const struct rproc_ops *ops;
+ bool glink_subdev_required;
+ bool reset_seq;
+ u32 pasid;
+ int (*mdt_load_sec)(struct device *dev, const struct firmware *fw,
+ const char *fw_name, int pas_id, void *mem_region,
+ phys_addr_t mem_phys, size_t mem_size,
+ phys_addr_t *reloc_base);
+ int (*powerup_scm)(u32 peripheral);
+ int (*powerdown_scm)(u32 peripheral);
+};
+
+/**
+ * qcom_get_pd_asid() - get the pd asid number from DT node
+ * @node: device tree node
+ *
+ * Returns asid if node name has 'pd' string
+ */
+s8 qcom_get_pd_asid(struct device_node *node)
+{
+ char *str;
+ s8 pd_asid;
+
+ if (!node)
+ return -EINVAL;
+
+ str = strstr(node->name, "pd");
+ if (!str)
+ return 0;
+
+ str += strlen("pd") + 1;
+ return kstrtos8(str, 10, &pd_asid) ? -EINVAL : pd_asid;
+}
+EXPORT_SYMBOL(qcom_get_pd_asid);
+
+static int q6_wcss_start(struct rproc *rproc)
+{
+ struct q6_wcss *wcss = rproc->priv;
+ int ret;
+ struct device_node *upd_np;
+ struct platform_device *upd_pdev;
+ struct rproc *upd_rproc;
+ struct q6_wcss *upd_wcss;
+ const struct wcss_data *desc = wcss->desc;
+
+ qcom_q6v5_prepare(&wcss->q6);
+
+ ret = qcom_scm_pas_auth_and_reset(desc->pasid);
+ if (ret) {
+ dev_err(wcss->dev, "wcss_reset failed\n");
+ return ret;
+ }
+
+ ret = qcom_q6v5_wait_for_start(&wcss->q6, 5 * HZ);
+ if (ret == -ETIMEDOUT)
+ dev_err(wcss->dev, "start timed out\n");
+
+ /* On rootpd restart still user pd wcss state's
+ * initialized to WCSS_SHUTDOWN and it leads to
+ * user pd FW load (user pd fw load should happen
+ * only on user pd restart, not on root pd restart).
+ * So bring userpd wcss state to default value.
+ */
+ for_each_available_child_of_node(wcss->dev->of_node, upd_np) {
+ upd_pdev = of_find_device_by_node(upd_np);
+ if (!upd_pdev)
+ continue;
+ upd_rproc = platform_get_drvdata(upd_pdev);
+ upd_wcss = upd_rproc->priv;
+ upd_wcss->state = WCSS_NORMAL;
+ }
+ return ret;
+}
+
+static int q6_wcss_spawn_pd(struct rproc *rproc)
+{
+ int ret;
+ struct q6_wcss *wcss = rproc->priv;
+
+ ret = qcom_q6v5_request_spawn(&wcss->q6);
+ if (ret == -ETIMEDOUT) {
+ pr_err("%s spawn timedout\n", rproc->name);
+ return ret;
+ }
+
+ ret = qcom_q6v5_wait_for_start(&wcss->q6, msecs_to_jiffies(10000));
+ if (ret == -ETIMEDOUT) {
+ pr_err("%s start timedout\n", rproc->name);
+ wcss->q6.running = false;
+ return ret;
+ }
+ wcss->q6.running = true;
+ return ret;
+}
+
+static int wcss_ahb_pcie_pd_start(struct rproc *rproc)
+{
+ struct q6_wcss *wcss = rproc->priv;
+ const struct wcss_data *desc = wcss->desc;
+ int ret;
+
+ if (!desc->reset_seq)
+ return 0;
+
+ if (desc->powerup_scm) {
+ ret = desc->powerup_scm(desc->pasid);
+ if (ret) {
+ dev_err(wcss->dev, "failed to power up pd\n");
+ return ret;
+ }
+ }
+
+ ret = q6_wcss_spawn_pd(rproc);
+ if (ret)
+ return ret;
+
+ wcss->state = WCSS_NORMAL;
+ return ret;
+}
+
+static int q6_wcss_stop(struct rproc *rproc)
+{
+ struct q6_wcss *wcss = rproc->priv;
+ const struct wcss_data *desc = wcss->desc;
+ int ret;
+
+ ret = qcom_scm_pas_shutdown(desc->pasid);
+ if (ret) {
+ dev_err(wcss->dev, "not able to shutdown\n");
+ return ret;
+ }
+ qcom_q6v5_unprepare(&wcss->q6);
+
+ return 0;
+}
+
+static int wcss_ahb_pcie_pd_stop(struct rproc *rproc)
+{
+ struct q6_wcss *wcss = rproc->priv;
+ struct rproc *rpd_rproc = dev_get_drvdata(wcss->dev->parent);
+ const struct wcss_data *desc = wcss->desc;
+ int ret;
+
+ if (!desc->reset_seq)
+ goto shut_down_rpd;
+
+ if (rproc->state != RPROC_CRASHED && wcss->q6.stop_bit) {
+ ret = qcom_q6v5_request_stop(&wcss->q6, NULL);
+ if (ret) {
+ dev_err(&rproc->dev, "pd not stopped\n");
+ return ret;
+ }
+ }
+
+ if (desc->powerdown_scm) {
+ ret = desc->powerdown_scm(desc->pasid);
+ if (ret) {
+ dev_err(wcss->dev, "failed to power down pd\n");
+ return ret;
+ }
+ }
+
+shut_down_rpd:
+ rproc_shutdown(rpd_rproc);
+
+ wcss->state = WCSS_SHUTDOWN;
+ return 0;
+}
+
+static void *q6_wcss_da_to_va(struct rproc *rproc, u64 da, size_t len,
+ bool *is_iomem)
+{
+ struct q6_wcss *wcss = rproc->priv;
+ int offset;
+
+ offset = da - wcss->mem_reloc;
+ if (offset < 0 || offset + len > wcss->mem_size)
+ return NULL;
+
+ return wcss->mem_region + offset;
+}
+
+static int q6_wcss_load(struct rproc *rproc, const struct firmware *fw)
+{
+ struct q6_wcss *wcss = rproc->priv;
+ const struct firmware *fw_hdl;
+ int ret;
+ const struct wcss_data *desc = wcss->desc;
+ int loop;
+
+ ret = qcom_mdt_load(wcss->dev, fw, rproc->firmware,
+ desc->pasid, wcss->mem_region,
+ wcss->mem_phys, wcss->mem_size,
+ &wcss->mem_reloc);
+ if (ret)
+ return ret;
+
+ for (loop = 1; loop < MAX_FIRMWARE; loop++) {
+ if (!wcss->firmware[loop])
+ continue;
+
+ ret = request_firmware(&fw_hdl, wcss->firmware[loop],
+ wcss->dev);
+ if (ret)
+ continue;
+
+ ret = qcom_mdt_load_no_init(wcss->dev, fw_hdl,
+ wcss->firmware[loop], 0,
+ wcss->mem_region,
+ wcss->mem_phys,
+ wcss->mem_size,
+ &wcss->mem_reloc);
+
+ release_firmware(fw_hdl);
+
+ if (ret) {
+ dev_err(wcss->dev,
+ "can't load %s ret:%d\n", wcss->firmware[loop], ret);
+ return ret;
+ }
+ }
+ return 0;
+}
+
+/* This function load's userpd firmware. Since Userpd depends on rootpd
+ * first bring up root pd and then load. User pd firmware load is required
+ * only during user pd restart because root pd loads user pd FW pil segments
+ * during it's bringup.
+ */
+static int wcss_ahb_pcie_pd_load(struct rproc *rproc, const struct firmware *fw)
+{
+ struct q6_wcss *wcss = rproc->priv, *wcss_rpd;
+ struct rproc *rpd_rproc = dev_get_drvdata(wcss->dev->parent);
+ const struct wcss_data *desc = wcss->desc;
+ int ret;
+
+ wcss_rpd = rpd_rproc->priv;
+
+ /* Boot rootpd rproc */
+ ret = rproc_boot(rpd_rproc);
+ if (ret || wcss->state == WCSS_NORMAL)
+ return ret;
+
+ return desc->mdt_load_sec(wcss->dev, fw, rproc->firmware,
+ desc->pasid, wcss->mem_region,
+ wcss->mem_phys, wcss->mem_size,
+ &wcss->mem_reloc);
+}
+
+static unsigned long q6_wcss_panic(struct rproc *rproc)
+{
+ struct q6_wcss *wcss = rproc->priv;
+
+ return qcom_q6v5_panic(&wcss->q6);
+}
+
+static const struct rproc_ops wcss_ahb_pcie_ipq5018_ops = {
+ .start = wcss_ahb_pcie_pd_start,
+ .stop = wcss_ahb_pcie_pd_stop,
+ .load = wcss_ahb_pcie_pd_load,
+};
+
+static const struct rproc_ops q6_wcss_ipq5018_ops = {
+ .start = q6_wcss_start,
+ .stop = q6_wcss_stop,
+ .da_to_va = q6_wcss_da_to_va,
+ .load = q6_wcss_load,
+ .get_boot_addr = rproc_elf_get_boot_addr,
+ .panic = q6_wcss_panic,
+};
+
+static int q6_alloc_memory_region(struct q6_wcss *wcss)
+{
+ struct reserved_mem *rmem = NULL;
+ struct device_node *node;
+ struct device *dev = wcss->dev;
+ const struct wcss_data *desc = wcss->desc;
+
+ if (desc->version == Q6_IPQ) {
+ node = of_parse_phandle(dev->of_node, "memory-region", 0);
+ if (node)
+ rmem = of_reserved_mem_lookup(node);
+
+ of_node_put(node);
+
+ if (!rmem) {
+ dev_err(dev, "unable to acquire memory-region\n");
+ return -EINVAL;
+ }
+ } else {
+ struct rproc *rpd_rproc = dev_get_drvdata(dev->parent);
+ struct q6_wcss *rpd_wcss = rpd_rproc->priv;
+
+ wcss->mem_phys = rpd_wcss->mem_phys;
+ wcss->mem_reloc = rpd_wcss->mem_reloc;
+ wcss->mem_size = rpd_wcss->mem_size;
+ wcss->mem_region = rpd_wcss->mem_region;
+ return 0;
+ }
+
+ wcss->mem_phys = rmem->base;
+ wcss->mem_reloc = rmem->base;
+ wcss->mem_size = rmem->size;
+ wcss->mem_region = devm_ioremap_wc(dev, wcss->mem_phys, wcss->mem_size);
+ if (!wcss->mem_region) {
+ dev_err(dev, "unable to map memory region: %pa+%pa\n",
+ &rmem->base, &rmem->size);
+ return -EBUSY;
+ }
+
+ return 0;
+}
+
+static int q6_get_inbound_irq(struct qcom_q6v5 *q6,
+ struct platform_device *pdev,
+ const char *int_name,
+ irqreturn_t (*handler)(int irq, void *data))
+{
+ int ret, irq;
+ char *interrupt, *tmp = (char *)int_name;
+ struct q6_wcss *wcss = q6->rproc->priv;
+
+ irq = platform_get_irq_byname(pdev, int_name);
+ if (irq < 0) {
+ if (irq != -EPROBE_DEFER)
+ dev_err(&pdev->dev,
+ "failed to retrieve %s IRQ: %d\n",
+ int_name, irq);
+ return irq;
+ }
+
+ if (!strcmp(int_name, "fatal")) {
+ q6->fatal_irq = irq;
+ } else if (!strcmp(int_name, "stop-ack")) {
+ q6->stop_irq = irq;
+ tmp = "stop_ack";
+ } else if (!strcmp(int_name, "ready")) {
+ q6->ready_irq = irq;
+ } else if (!strcmp(int_name, "handover")) {
+ q6->handover_irq = irq;
+ } else if (!strcmp(int_name, "spawn-ack")) {
+ q6->spawn_irq = irq;
+ tmp = "spawn_ack";
+ } else {
+ dev_err(&pdev->dev, "unknown interrupt\n");
+ return -EINVAL;
+ }
+
+ interrupt = devm_kzalloc(&pdev->dev, BUF_SIZE, GFP_KERNEL);
+ if (!interrupt)
+ return -ENOMEM;
+
+ snprintf(interrupt, BUF_SIZE, "q6v5_wcss_userpd%d_%s", wcss->pd_asid, tmp);
+
+ ret = devm_request_threaded_irq(&pdev->dev, irq,
+ NULL, handler,
+ IRQF_TRIGGER_RISING | IRQF_ONESHOT,
+ interrupt, q6);
+ if (ret) {
+ dev_err(&pdev->dev, "failed to acquire %s irq\n", interrupt);
+ return ret;
+ }
+ return 0;
+}
+
+static int q6_get_outbound_irq(struct qcom_q6v5 *q6,
+ struct platform_device *pdev,
+ const char *int_name)
+{
+ struct qcom_smem_state *tmp_state;
+ unsigned bit;
+
+ tmp_state = qcom_smem_state_get(&pdev->dev, int_name, &bit);
+ if (IS_ERR(tmp_state)) {
+ dev_err(&pdev->dev, "failed to acquire %s state\n", int_name);
+ return PTR_ERR(tmp_state);
+ }
+
+ if (!strcmp(int_name, "stop")) {
+ q6->state = tmp_state;
+ q6->stop_bit = bit;
+ } else if (!strcmp(int_name, "spawn")) {
+ q6->spawn_state = tmp_state;
+ q6->spawn_bit = bit;
+ }
+
+ return 0;
+}
+
+static int init_irq(struct qcom_q6v5 *q6,
+ struct platform_device *pdev, struct rproc *rproc,
+ int crash_reason, const char *load_state,
+ void (*handover)(struct qcom_q6v5 *q6))
+{
+ int ret;
+
+ q6->rproc = rproc;
+ q6->dev = &pdev->dev;
+ q6->crash_reason = crash_reason;
+ q6->handover = handover;
+
+ init_completion(&q6->start_done);
+ init_completion(&q6->stop_done);
+ init_completion(&q6->spawn_done);
+
+ ret = q6_get_inbound_irq(q6, pdev, "fatal",
+ q6v5_fatal_interrupt);
+ if (ret)
+ return ret;
+
+ ret = q6_get_inbound_irq(q6, pdev, "ready",
+ q6v5_ready_interrupt);
+ if (ret)
+ return ret;
+
+ ret = q6_get_inbound_irq(q6, pdev, "stop-ack",
+ q6v5_stop_interrupt);
+ if (ret)
+ return ret;
+
+ ret = q6_get_inbound_irq(q6, pdev, "spawn-ack",
+ q6v5_spawn_interrupt);
+ if (ret)
+ return ret;
+
+ ret = q6_get_outbound_irq(q6, pdev, "stop");
+ if (ret)
+ return ret;
+
+ ret = q6_get_outbound_irq(q6, pdev, "spawn");
+ if (ret)
+ return ret;
+
+ return 0;
+}
+
+static int q6_wcss_probe(struct platform_device *pdev)
+{
+ const struct wcss_data *desc;
+ struct q6_wcss *wcss;
+ struct rproc *rproc;
+ int ret;
+ char *subdev_name;
+ const char **firmware;
+
+ desc = of_device_get_match_data(&pdev->dev);
+ if (!desc)
+ return -EINVAL;
+
+ firmware = devm_kcalloc(&pdev->dev, MAX_FIRMWARE,
+ sizeof(*firmware), GFP_KERNEL);
+ if (!firmware)
+ return -ENOMEM;
+
+ ret = of_property_read_string_array(pdev->dev.of_node, "firmware-name",
+ firmware, MAX_FIRMWARE);
+ if (ret < 0)
+ return ret;
+
+ rproc = rproc_alloc(&pdev->dev, pdev->name, desc->ops,
+ firmware[0], sizeof(*wcss));
+ if (!rproc) {
+ dev_err(&pdev->dev, "failed to allocate rproc\n");
+ return -ENOMEM;
+ }
+ wcss = rproc->priv;
+ wcss->dev = &pdev->dev;
+ wcss->desc = desc;
+ wcss->firmware = firmware;
+
+ ret = q6_alloc_memory_region(wcss);
+ if (ret)
+ goto free_rproc;
+
+ wcss->pd_asid = qcom_get_pd_asid(wcss->dev->of_node);
+ if (wcss->pd_asid < 0)
+ goto free_rproc;
+
+ if (desc->init_irq) {
+ ret = desc->init_irq(&wcss->q6, pdev, rproc,
+ desc->crash_reason_smem, NULL, NULL);
+ if (ret)
+ goto free_rproc;
+ }
+
+ if (desc->glink_subdev_required)
+ qcom_add_glink_subdev(rproc, &wcss->glink_subdev, desc->ssr_name);
+
+ subdev_name = (char *)(desc->ssr_name ? desc->ssr_name : pdev->name);
+ qcom_add_ssr_subdev(rproc, &wcss->ssr_subdev, subdev_name);
+
+ rproc->auto_boot = false;
+ ret = rproc_add(rproc);
+ if (ret)
+ goto free_rproc;
+
+ platform_set_drvdata(pdev, rproc);
+
+ ret = of_platform_populate(wcss->dev->of_node, NULL,
+ NULL, wcss->dev);
+ if (ret) {
+ dev_err(&pdev->dev, "failed to populate wcss pd nodes\n");
+ goto free_rproc;
+ }
+ return 0;
+
+free_rproc:
+ rproc_free(rproc);
+
+ return ret;
+}
+
+static int q6_wcss_remove(struct platform_device *pdev)
+{
+ struct rproc *rproc = platform_get_drvdata(pdev);
+ struct q6_wcss *wcss = rproc->priv;
+
+ qcom_q6v5_deinit(&wcss->q6);
+
+ rproc_del(rproc);
+ rproc_free(rproc);
+
+ return 0;
+}
+
+static const struct wcss_data q6_ipq5018_res_init = {
+ .init_irq = qcom_q6v5_init,
+ .crash_reason_smem = WCSS_CRASH_REASON,
+ .ssr_name = "q6wcss",
+ .ops = &q6_wcss_ipq5018_ops,
+ .version = Q6_IPQ,
+ .glink_subdev_required = true,
+ .pasid = MPD_WCNSS_PAS_ID,
+};
+
+static const struct wcss_data q6_ipq9574_res_init = {
+ .init_irq = qcom_q6v5_init,
+ .crash_reason_smem = WCSS_CRASH_REASON,
+ .ssr_name = "q6wcss",
+ .ops = &q6_wcss_ipq5018_ops,
+ .version = Q6_IPQ,
+ .glink_subdev_required = true,
+ .pasid = WCNSS_PAS_ID,
+};
+
+static const struct wcss_data wcss_ahb_ipq5018_res_init = {
+ .init_irq = init_irq,
+ .crash_reason_smem = WCSS_CRASH_REASON,
+ .ops = &wcss_ahb_pcie_ipq5018_ops,
+ .version = WCSS_AHB_IPQ,
+ .pasid = MPD_WCNSS_PAS_ID,
+ .reset_seq = true,
+ .mdt_load_sec = qcom_mdt_load_pd_seg,
+ .powerup_scm = qti_scm_int_radio_powerup,
+ .powerdown_scm = qti_scm_int_radio_powerdown,
+};
+
+static const struct wcss_data wcss_ahb_ipq9574_res_init = {
+ .crash_reason_smem = WCSS_CRASH_REASON,
+ .ops = &wcss_ahb_pcie_ipq5018_ops,
+ .version = WCSS_AHB_IPQ,
+ .pasid = WCNSS_PAS_ID,
+ .mdt_load_sec = qcom_mdt_load,
+};
+
+static const struct wcss_data wcss_pcie_ipq5018_res_init = {
+ .init_irq = init_irq,
+ .crash_reason_smem = WCSS_CRASH_REASON,
+ .ops = &wcss_ahb_pcie_ipq5018_ops,
+ .version = WCSS_PCIE_IPQ,
+ .reset_seq = true,
+ .mdt_load_sec = qcom_mdt_load_pd_seg,
+ .pasid = MPD_WCNSS_PAS_ID,
+};
+
+static const struct of_device_id q6_wcss_of_match[] = {
+ { .compatible = "qcom,ipq5018-q6-mpd", .data = &q6_ipq5018_res_init },
+ { .compatible = "qcom,ipq9574-q6-mpd", .data = &q6_ipq9574_res_init },
+ { .compatible = "qcom,ipq5018-wcss-ahb-mpd",
+ .data = &wcss_ahb_ipq5018_res_init },
+ { .compatible = "qcom,ipq9574-wcss-ahb-mpd",
+ .data = &wcss_ahb_ipq9574_res_init },
+ { .compatible = "qcom,ipq5018-wcss-pcie-mpd",
+ .data = &wcss_pcie_ipq5018_res_init },
+ { },
+};
+MODULE_DEVICE_TABLE(of, q6_wcss_of_match);
+
+static struct platform_driver q6_wcss_driver = {
+ .probe = q6_wcss_probe,
+ .remove = q6_wcss_remove,
+ .driver = {
+ .name = "qcom-q6-mpd",
+ .of_match_table = q6_wcss_of_match,
+ },
+};
+module_platform_driver(q6_wcss_driver);
+
+MODULE_DESCRIPTION("Hexagon WCSS Multipd Peripheral Image Loader");
+MODULE_LICENSE("GPL v2");
diff --git a/drivers/soc/qcom/mdt_loader.c b/drivers/soc/qcom/mdt_loader.c
index 33dd8c315eb7..ab7f60cceafc 100644
--- a/drivers/soc/qcom/mdt_loader.c
+++ b/drivers/soc/qcom/mdt_loader.c
@@ -16,6 +16,56 @@
#include <linux/sizes.h>
#include <linux/slab.h>
#include <linux/soc/qcom/mdt_loader.h>
+#include <linux/dma-mapping.h>
+
+#include "../../remoteproc/qcom_common.h"
+#define PDSEG_PAS_ID 0xD
+
+/**
+ * struct region - structure passed to TrustZone
+ * @addr: address of dma region, where dma blocks/chunks address resides
+ * @blk_size: size of each block
+ */
+struct region {
+ u64 addr;
+ unsigned int blk_size;
+};
+
+/**
+ * struct pdseg_dma_mem_info
+ * @tz_addr: reference to structure passed to trustzone
+ * @blocks: no of blocks
+ * @tz_dma: dma handle of tz_addr
+ * @dma_blk_arr_addr_phys: dma handle of dma_blk_arr_addr
+ * @dma_blk_arr_addr: VA of dma array, where each index points to
+ * dma block PA
+ * @pt: stores VA of each block
+ *
+ *
+ ---- ---- ----
+ DMA | | | | | |
+ blocks ---- ---- ----
+ | | |
+ |-----| | |-------
+ | | |
+ Array of --------------
+ pointers | | | | dma_blk_arr_addr_phys
+ --------------
+ |
+ |
+ Address referred tz_addr->addr
+ by trustzone
+ to get dma blocks
+ */
+
+struct pdseg_dma_mem_info {
+ struct region *tz_addr;
+ int blocks;
+ dma_addr_t tz_dma;
+ dma_addr_t dma_blk_arr_addr_phys;
+ u64 *dma_blk_arr_addr;
+ void **pt;
+};
static bool mdt_phdr_valid(const struct elf32_phdr *phdr)
{
@@ -358,6 +408,261 @@ static int __qcom_mdt_load(struct device *dev, const struct firmware *fw,
return ret;
}
+static int allocate_dma_mem(struct device *dev,
+ struct pdseg_dma_mem_info *pd_dma,
+ int max_size)
+{
+ dma_addr_t dma_tmp = 0;
+ int i;
+
+ pd_dma->blocks = DIV_ROUND_UP(max_size, PAGE_SIZE);
+
+ /* Allocate dma memory for structure passed to trust zone */
+ pd_dma->tz_addr = dma_alloc_coherent(dev, sizeof(struct region),
+ &pd_dma->tz_dma, GFP_DMA);
+ if (!pd_dma->tz_addr) {
+ pr_err("Error in dma alloc\n");
+ return -ENOMEM;
+ }
+
+ /* Allocate dma memory to store array of blocks PA */
+ pd_dma->dma_blk_arr_addr =
+ dma_alloc_coherent(dev, (pd_dma->blocks * sizeof(u64)),
+ &pd_dma->dma_blk_arr_addr_phys, GFP_DMA);
+ if (!pd_dma->dma_blk_arr_addr) {
+ pr_err("Error in dma alloc\n");
+ goto free_tz_dma_alloc;
+ }
+
+ /* Assign dma block array PA to trustzone structure addr variable */
+ memcpy(&pd_dma->tz_addr->addr, &pd_dma->dma_blk_arr_addr_phys,
+ sizeof(dma_addr_t));
+
+ /* Allocate memory to store array of blocks VA */
+ pd_dma->pt = kzalloc(pd_dma->blocks * sizeof(void *), GFP_KERNEL);
+ if (!pd_dma->pt) {
+ pr_err("Error in memory alloc\n");
+ goto free_dma_blk_arr_alloc;
+ }
+
+ for (i = 0; i < pd_dma->blocks; i++) {
+ /* Allocate dma memory for blocks with PAGE_SIZE each */
+ pd_dma->pt[i] = dma_alloc_coherent(dev, PAGE_SIZE,
+ &dma_tmp, GFP_DMA);
+ if (!pd_dma->pt[i]) {
+ pr_err("Error in dma alloc i:%d - blocks:%d\n", i,
+ pd_dma->blocks);
+ goto free_mem_alloc;
+ }
+
+ /* Assign dma block PA to dma_blk_arr_addr */
+ memcpy(&pd_dma->dma_blk_arr_addr[i], &dma_tmp,
+ sizeof(dma_addr_t));
+ }
+ pd_dma->tz_addr->blk_size = PAGE_SIZE;
+ return 0;
+
+free_mem_alloc:
+ i = 0;
+ while (i < pd_dma->blocks && pd_dma->pt[i]) {
+ memcpy(&dma_tmp, &pd_dma->dma_blk_arr_addr[i],
+ sizeof(dma_addr_t));
+ dma_free_coherent(dev, PAGE_SIZE, pd_dma->pt[i], dma_tmp);
+ i++;
+ }
+ kfree(pd_dma->pt);
+free_dma_blk_arr_alloc:
+ dma_free_coherent(dev, (pd_dma->blocks * sizeof(u64)),
+ pd_dma->dma_blk_arr_addr,
+ pd_dma->dma_blk_arr_addr_phys);
+free_tz_dma_alloc:
+ dma_free_coherent(dev, sizeof(struct region), pd_dma->tz_addr,
+ pd_dma->tz_dma);
+
+ return -ENOMEM;
+}
+
+static void free_dma_mem(struct device *dev, struct pdseg_dma_mem_info *pd_dma)
+{
+ int i;
+ dma_addr_t dma_tmp = 0;
+
+ for (i = 0; i < pd_dma->blocks; i++) {
+ memcpy(&dma_tmp, &pd_dma->dma_blk_arr_addr[i],
+ sizeof(dma_addr_t));
+ dma_free_coherent(dev, PAGE_SIZE, pd_dma->pt[i],
+ dma_tmp);
+ }
+
+ dma_free_coherent(dev, (pd_dma->blocks * sizeof(u64)),
+ pd_dma->dma_blk_arr_addr,
+ pd_dma->dma_blk_arr_addr_phys);
+
+ dma_free_coherent(dev, sizeof(struct region), pd_dma->tz_addr,
+ pd_dma->tz_dma);
+ kfree(pd_dma->pt);
+}
+
+static int memcpy_pdseg_to_dma_blk(const char *fw_name, struct device *dev,
+ int ph_no, struct pdseg_dma_mem_info *pd_dma)
+{
+ const struct firmware *seg_fw;
+ int ret, offset_tmp = 0, tmp = 0;
+ size_t size = 0;
+
+ ret = request_firmware(&seg_fw, fw_name, dev);
+ if (ret) {
+ dev_err(dev, "failed to load %s\n", fw_name);
+ return ret;
+ }
+ size = seg_fw->size < PAGE_SIZE ?
+ seg_fw->size : PAGE_SIZE;
+ while (tmp < pd_dma->blocks && size) {
+ /* Clear last block and copy data */
+ if ((tmp + 1) == pd_dma->blocks)
+ memset_io(pd_dma->pt[tmp], 0, PAGE_SIZE);
+ memcpy_toio(pd_dma->pt[tmp], seg_fw->data + offset_tmp, size);
+ tmp++;
+ offset_tmp += size;
+ if ((seg_fw->size - offset_tmp) < PAGE_SIZE)
+ size = seg_fw->size - offset_tmp;
+ }
+ release_firmware(seg_fw);
+ ret = qti_scm_pdseg_memcpy_v2(PDSEG_PAS_ID, ph_no, pd_dma->tz_dma,
+ tmp);
+ if (ret) {
+ dev_err(dev, "pd seg memcpy scm failed\n");
+ return ret;
+ }
+ return ret;
+}
+
+static int __qcom_mdt_load_pd_seg(struct device *dev, const struct firmware *fw,
+ const char *fw_name, int pas_id, void *mem_region,
+ phys_addr_t mem_phys, size_t mem_size,
+ phys_addr_t *reloc_base, bool pas_init)
+{
+ const struct elf32_phdr *phdrs;
+ const struct elf32_phdr *phdr;
+ const struct elf32_hdr *ehdr;
+ phys_addr_t mem_reloc;
+ phys_addr_t min_addr = PHYS_ADDR_MAX;
+ ssize_t offset;
+ bool relocate = false;
+ int ret = 0;
+ int i;
+ u8 pd_asid;
+ int max_size = 0;
+ struct pdseg_dma_mem_info pd_dma = {0};
+ char *firmware_name;
+ size_t fw_name_len = strlen(fw_name);
+
+ if (!fw || !mem_region || !mem_phys || !mem_size)
+ return -EINVAL;
+
+ firmware_name = kstrdup(fw_name, GFP_KERNEL);
+ if (!firmware_name)
+ return -ENOMEM;
+
+ pd_asid = qcom_get_pd_asid(dev->of_node);
+
+ ehdr = (struct elf32_hdr *)fw->data;
+ phdrs = (struct elf32_phdr *)(ehdr + 1);
+
+ for (i = 0; i < ehdr->e_phnum; i++) {
+ phdr = &phdrs[i];
+
+ if (!mdt_phdr_valid(phdr))
+ continue;
+ /*
+ * While doing PD specific reloading, load only that PD
+ * specific writeable entries. Skip others
+ */
+ if ((QCOM_MDT_PF_ASID(phdr->p_flags) != pd_asid) ||
+ ((phdr->p_flags & PF_W) == 0))
+ continue;
+
+ if (phdr->p_flags & QCOM_MDT_RELOCATABLE)
+ relocate = true;
+
+ if (phdr->p_paddr < min_addr)
+ min_addr = phdr->p_paddr;
+
+ if (max_size < phdr->p_memsz)
+ max_size = phdr->p_memsz;
+ }
+
+ /**
+ * During userpd PIL segments reloading, Q6 is live. Due to
+ * this we can't access memory region of PIL segments. So
+ * create DMA chunks/blocks to store PIL segments data.
+ */
+ ret = allocate_dma_mem(dev, &pd_dma, max_size);
+ if (ret)
+ goto out;
+
+ if (relocate) {
+ /*
+ * The image is relocatable, so offset each segment based on
+ * the lowest segment address.
+ */
+ mem_reloc = min_addr;
+ } else {
+ /*
+ * Image is not relocatable, so offset each segment based on
+ * the allocated physical chunk of memory.
+ */
+ mem_reloc = mem_phys;
+ }
+
+ for (i = 0; i < ehdr->e_phnum; i++) {
+ phdr = &phdrs[i];
+
+ if (!mdt_phdr_valid(phdr))
+ continue;
+
+ /*
+ * While doing PD specific reloading, load only that PD
+ * specific writeable entries. Skip others
+ */
+ if ((QCOM_MDT_PF_ASID(phdr->p_flags) != pd_asid) ||
+ ((phdr->p_flags & PF_W) == 0))
+ continue;
+
+ offset = phdr->p_paddr - mem_reloc;
+ if (offset < 0 || offset + phdr->p_memsz > mem_size) {
+ dev_err(dev, "segment outside memory range\n");
+ ret = -EINVAL;
+ break;
+ }
+
+ if (phdr->p_filesz > phdr->p_memsz) {
+ dev_err(dev,
+ "refusing to load segment %d with p_filesz > p_memsz\n",
+ i);
+ ret = -EINVAL;
+ break;
+ }
+
+ if (phdr->p_filesz) {
+ snprintf(firmware_name + fw_name_len - 3, 4, "b%02d", i);
+
+ /* copy PIL segments data to dma blocks */
+ ret = memcpy_pdseg_to_dma_blk(firmware_name, dev, i, &pd_dma);
+ if (ret)
+ goto free_dma;
+ }
+ }
+free_dma:
+ free_dma_mem(dev, &pd_dma);
+
+out:
+ if (reloc_base)
+ *reloc_base = mem_reloc;
+
+ return ret;
+}
+
/**
* qcom_mdt_load() - load the firmware which header is loaded as fw
* @dev: device handle to associate resources with
@@ -410,5 +715,32 @@ int qcom_mdt_load_no_init(struct device *dev, const struct firmware *fw,
}
EXPORT_SYMBOL_GPL(qcom_mdt_load_no_init);
+/**
+ * qcom_mdt_load_pd_seg() - load userpd specific PIL segements
+ * @dev: device handle to associate resources with
+ * @fw: firmware object for the mdt file
+ * @firmware: name of the firmware, for construction of segment file names
+ * @pas_id: PAS identifier
+ * @mem_region: allocated memory region to load firmware into
+ * @mem_phys: physical address of allocated memory region
+ * @mem_size: size of the allocated memory region
+ * @reloc_base: adjusted physical address after relocation
+ *
+ * Here userpd PIL segements are stitched with rootpd firmware.
+ * This function reloads userpd specific PIL segments during SSR
+ * of userpd.
+ *
+ * Returns 0 on success, negative errno otherwise.
+ */
+int qcom_mdt_load_pd_seg(struct device *dev, const struct firmware *fw,
+ const char *firmware, int pas_id, void *mem_region,
+ phys_addr_t mem_phys, size_t mem_size,
+ phys_addr_t *reloc_base)
+{
+ return __qcom_mdt_load_pd_seg(dev, fw, firmware, pas_id, mem_region, mem_phys,
+ mem_size, reloc_base, true);
+}
+EXPORT_SYMBOL_GPL(qcom_mdt_load_pd_seg);
+
MODULE_DESCRIPTION("Firmware parser for Qualcomm MDT format");
MODULE_LICENSE("GPL v2");
diff --git a/include/linux/soc/qcom/mdt_loader.h b/include/linux/soc/qcom/mdt_loader.h
index 9e8e60421192..57021236dfc9 100644
--- a/include/linux/soc/qcom/mdt_loader.h
+++ b/include/linux/soc/qcom/mdt_loader.h
@@ -7,6 +7,11 @@
#define QCOM_MDT_TYPE_MASK (7 << 24)
#define QCOM_MDT_TYPE_HASH (2 << 24)
#define QCOM_MDT_RELOCATABLE BIT(27)
+#define QCOM_MDT_ASID_MASK 0xfu
+#define QCOM_MDT_PF_ASID_SHIFT 16
+#define QCOM_MDT_PF_ASID_MASK (QCOM_MDT_ASID_MASK << QCOM_MDT_PF_ASID_SHIFT)
+#define QCOM_MDT_PF_ASID(x) \
+ (((x) >> QCOM_MDT_PF_ASID_SHIFT) & QCOM_MDT_ASID_MASK)
struct device;
struct firmware;
@@ -27,6 +32,10 @@ int qcom_mdt_load_no_init(struct device *dev, const struct firmware *fw,
const char *fw_name, int pas_id, void *mem_region,
phys_addr_t mem_phys, size_t mem_size,
phys_addr_t *reloc_base);
+int qcom_mdt_load_pd_seg(struct device *dev, const struct firmware *fw,
+ const char *firmware, int pas_id, void *mem_region,
+ phys_addr_t mem_phys, size_t mem_size,
+ phys_addr_t *reloc_base);
void *qcom_mdt_read_metadata(const struct firmware *fw, size_t *data_len,
const char *fw_name, struct device *dev);
@@ -62,6 +71,16 @@ static inline int qcom_mdt_load_no_init(struct device *dev,
return -ENODEV;
}
+static inline int qcom_mdt_load_pd_seg(struct device *dev,
+ const struct firmware *fw,
+ const char *fw_name, int pas_id,
+ void *mem_region, phys_addr_t mem_phys,
+ size_t mem_size,
+ phys_addr_t *reloc_base)
+{
+ return -ENODEV;
+}
+
static inline void *qcom_mdt_read_metadata(const struct firmware *fw,
size_t *data_len, const char *fw_name,
struct device *dev)
--
2.17.1
Powered by blists - more mailing lists