Re: [PATCH 08/11] remoteproc: qcom: Add Hexagon based multipd rproc driver
From: Manikanta Mylavarapu
Date: Sun May 21 2023 - 15:26:35 EST
On 5/21/2023 10:17 PM, Manikanta Mylavarapu wrote:
On 5/19/2023 2:08 PM, Varadarajan Narayanan wrote:
----- Forwarded message from Varadarajan Narayanan
<quic_varada@xxxxxxxxxxx> -----
Date: Tue, 7 Mar 2023 11:46:04 +0530
Subject: Re: [PATCH 08/11] remoteproc: qcom: Add Hexagon based multipd
rproc driver
From: Varadarajan Narayanan <quic_varada@xxxxxxxxxxx>
To: Manikanta Mylavarapu <quic_mmanikan@xxxxxxxxxxx>,
agross@xxxxxxxxxx, andersson@xxxxxxxxxx, konrad.dybcio@xxxxxxxxxx,
robh+dt@xxxxxxxxxx, krzysztof.kozlowski+dt@xxxxxxxxxx,
jassisinghbrar@xxxxxxxxx, mathieu.poirier@xxxxxxxxxx,
mturquette@xxxxxxxxxxxx, sboyd@xxxxxxxxxx, quic_gurus@xxxxxxxxxxx,
loic.poulain@xxxxxxxxxx, quic_eberman@xxxxxxxxxxx,
robimarko@xxxxxxxxx, linux-arm-msm@xxxxxxxxxxxxxxx,
devicetree@xxxxxxxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx,
linux-remoteproc@xxxxxxxxxxxxxxx, linux-clk@xxxxxxxxxxxxxxx
CC: quic_srichara@xxxxxxxxxxx, quic_gokulsri@xxxxxxxxxxx,
quic_sjaganat@xxxxxxxxxxx, quic_kathirav@xxxxxxxxxxx,
quic_arajkuma@xxxxxxxxxxx, quic_anusha@xxxxxxxxxxx,
quic_poovendh@xxxxxxxxxxx
On 3/7/2023 10:11 AM, Manikanta Mylavarapu wrote:
APSS brings Q6 out of reset and then Q6 brings
WCSS block (wifi radio's) out of reset.
---------------
--> |WiFi 2G radio|
| --------------
|
-------- ------- |
| APSS | ---> |QDSP6| -----|
--------- ------- |
|
|
| --------------
--> |WiFi 5G radio|
--------------
Problem here is if any radio crashes, subsequently other
radio also should crash because Q6 crashed. Let's say
2G radio crashed, Q6 should pass this info to APSS. Only
Q6 processor interrupts registered with APSS. Obviously
Q6 should crash and raise fatal interrupt to APSS. Due
to this 5G radio also crashed. But no issue in 5G radio,
because of 2G radio crash 5G radio also impacted.
In multi pd model, this problem is resolved. Here WCSS
functionality (WiFi radio's) moved out from Q6 root pd
to a separate user pd. Due to this, radio's independently
pass their status info to APPS with out crashing Q6. So
other radio's won't be impacted.
---------
|WiFi |
--> |2G radio|
| ---------
------ Start Q6 ------- |
| | ------------------> | | |
| | Start WCSS PD1 (2G) | | |
|APSS| ----------------------->|QDSP6|-----|
| | Start WCSS PD1 (5G) | |
| | ----------------------->| |-----|
------ ------- |
|
| -----------
|-->|WiFi |
|5G radio |
-----------
According to linux terminology, here consider Q6 as root
i.e it provide all services, WCSS (wifi radio's) as user
i.e it uses services provided by root.
Since Q6 root & WCSS user pd's able to communicate with
APSS individually, multipd remoteproc driver registers
each PD with rproc framework. Here clients (Wifi host drivers)
intrested on WCSS PD rproc, so multipd driver start's root
pd in the context of WCSS user pd rproc start. Similarly
on down path, root pd will be stopped after wcss user pd
stopped.
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.
rproc->ops->start(userpd_rproc) {
/* Boot root pd rproc */
rproc_boot(upd_dev->parent);
---
/* user pd rproc start sequence */
---
---
}
With this way we ensure that root pd brought up before userpd.
rproc->ops->stop(userpd_rproc) {
---
---
/* user pd rproc stop sequence */
---
---
/* Shutdown root pd rproc */
rproc_shutdown(upd_dev->parent);
}
After userpd rproc stops, root pd rproc will be stopped.
IPQ5018, IPQ9574 supports multipd remoteproc driver.
Signed-off-by: Manikanta Mylavarapu <quic_mmanikan@xxxxxxxxxxx>
---
drivers/firmware/qcom_scm.c | 114 +++++
drivers/firmware/qcom_scm.h | 6 +
drivers/remoteproc/Kconfig | 20 +
drivers/remoteproc/Makefile | 1 +
drivers/remoteproc/qcom_common.c | 23 +
drivers/remoteproc/qcom_common.h | 1 +
drivers/remoteproc/qcom_q6v5.c | 41 +-
drivers/remoteproc/qcom_q6v5.h | 15 +-
drivers/remoteproc/qcom_q6v5_adsp.c | 5 +-
drivers/remoteproc/qcom_q6v5_mpd.c | 668
+++++++++++++++++++++++++
drivers/remoteproc/qcom_q6v5_mss.c | 4 +-
drivers/remoteproc/qcom_q6v5_pas.c | 3 +-
drivers/soc/qcom/mdt_loader.c | 314 ++++++++++++
include/linux/firmware/qcom/qcom_scm.h | 3 +
include/linux/soc/qcom/mdt_loader.h | 19 +
15 files changed, 1228 insertions(+), 9 deletions(-)
create mode 100644 drivers/remoteproc/qcom_q6v5_mpd.c
diff --git a/drivers/firmware/qcom_scm.c b/drivers/firmware/qcom_scm.c
index d88c5f14bd54..d69560963353 100644
--- a/drivers/firmware/qcom_scm.c
+++ b/drivers/firmware/qcom_scm.c
@@ -654,6 +654,120 @@ int qcom_scm_pas_shutdown(u32 peripheral)
}
EXPORT_SYMBOL(qcom_scm_pas_shutdown);
+/**
+ * qti_scm_int_radio_powerup - Bring up internal radio userpd
+ *
+ * @peripheral: peripheral id
+ *
+ * Return 0 on success.
+ */
+int qti_scm_int_radio_powerup(u32 peripheral)
+{
+ int ret;
+ struct qcom_scm_desc desc = {
+ .svc = QCOM_SCM_PD_LOAD_SVC_ID,
+ .cmd = QCOM_SCM_INT_RAD_PWR_UP_CMD_ID,
+ .arginfo = QCOM_SCM_ARGS(1),
+ .args[0] = peripheral,
+ .owner = ARM_SMCCC_OWNER_SIP,
+ };
+ struct qcom_scm_res res;
+
+ ret = qcom_scm_clk_enable();
+ if (ret)
+ return ret;
+
+ ret = qcom_scm_bw_enable();
+ if (ret)
+ return ret;
+
+ ret = qcom_scm_call(__scm->dev, &desc, &res);
+ qcom_scm_bw_disable();
+ qcom_scm_clk_disable();
+
+ return ret ? : res.result[0];
+}
+EXPORT_SYMBOL(qti_scm_int_radio_powerup);
+
+/**
+ * qti_scm_int_radio_powerdown() - Shut down internal radio userpd
+ *
+ * @peripheral: peripheral id
+ *
+ * Returns 0 on success.
+ */
+int qti_scm_int_radio_powerdown(u32 peripheral)
+{
+ int ret;
+ struct qcom_scm_desc desc = {
+ .svc = QCOM_SCM_PD_LOAD_SVC_ID,
+ .cmd = QCOM_SCM_INT_RAD_PWR_DN_CMD_ID,
+ .arginfo = QCOM_SCM_ARGS(1),
+ .args[0] = peripheral,
+ .owner = ARM_SMCCC_OWNER_SIP,
+ };
+ struct qcom_scm_res res;
+
+ ret = qcom_scm_clk_enable();
+ if (ret)
+ return ret;
+
+ ret = qcom_scm_bw_enable();
+ if (ret)
+ return ret;
+
+ ret = qcom_scm_call(__scm->dev, &desc, &res);
+ qcom_scm_bw_disable();
+ qcom_scm_clk_disable();
+
+ return ret ? : res.result[0];
+}
+EXPORT_SYMBOL(qti_scm_int_radio_powerdown);
+
+/**
+ * qti_scm_pdseg_memcpy_v2() - copy userpd PIL segments data to dma
blocks
+ *
+ * @peripheral: peripheral id
+ * @phno: program header no
+ * @dma: handle of dma region
+ * @seg_cnt: no of dma blocks
+ *
+ * Returns 0 if trustzone successfully loads userpd PIL segments
from dma
+ * blocks to DDR
+ */
+int qti_scm_pdseg_memcpy_v2(u32 peripheral, int phno, dma_addr_t dma,
+ int seg_cnt)
+{
+ int ret;
+ struct qcom_scm_desc desc = {
+ .svc = QCOM_SCM_PD_LOAD_SVC_ID,
+ .cmd = QCOM_SCM_PD_LOAD_V2_CMD_ID,
+ .arginfo = QCOM_SCM_ARGS(4, QCOM_SCM_VAL, QCOM_SCM_VAL,
+ QCOM_SCM_RW, QCOM_SCM_VAL),
+ .args[0] = peripheral,
+ .args[1] = phno,
+ .args[2] = dma,
+ .args[3] = seg_cnt,
+ .owner = ARM_SMCCC_OWNER_SIP,
+ };
+ struct qcom_scm_res res;
+
+ ret = qcom_scm_clk_enable();
+ if (ret)
+ return ret;
+
+ ret = qcom_scm_bw_enable();
+ if (ret)
+ return ret;
+
+ ret = qcom_scm_call(__scm->dev, &desc, &res);
+ qcom_scm_bw_disable();
+ qcom_scm_clk_disable();
+
+ return ret ? : res.result[0];
+}
+EXPORT_SYMBOL(qti_scm_pdseg_memcpy_v2);
+
/**
* qcom_scm_pas_supported() - Check if the peripheral
authentication service is
* available for the given peripherial
diff --git a/drivers/firmware/qcom_scm.h b/drivers/firmware/qcom_scm.h
index e6e512bd57d1..99e3ab2f1986 100644
--- a/drivers/firmware/qcom_scm.h
+++ b/drivers/firmware/qcom_scm.h
@@ -132,6 +132,12 @@ extern int scm_legacy_call(struct device *dev,
const struct qcom_scm_desc *desc,
#define QCOM_SCM_SMMU_CONFIG_ERRATA1 0x03
#define QCOM_SCM_SMMU_CONFIG_ERRATA1_CLIENT_ALL 0x02
+#define QCOM_SCM_PD_LOAD_SVC_ID 0x2
+#define QCOM_SCM_PD_LOAD_CMD_ID 0x16
+#define QCOM_SCM_PD_LOAD_V2_CMD_ID 0x19
+#define QCOM_SCM_INT_RAD_PWR_UP_CMD_ID 0x17
+#define QCOM_SCM_INT_RAD_PWR_DN_CMD_ID 0x18
+
#define QCOM_SCM_SVC_WAITQ 0x24
#define QCOM_SCM_WAITQ_RESUME 0x02
#define QCOM_SCM_WAITQ_GET_WQ_CTX 0x03
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.c
b/drivers/remoteproc/qcom_common.c
index a0d4238492e9..b72fbda02242 100644
--- a/drivers/remoteproc/qcom_common.c
+++ b/drivers/remoteproc/qcom_common.c
@@ -510,5 +510,28 @@ void qcom_remove_ssr_subdev(struct rproc *rproc,
struct qcom_rproc_ssr *ssr)
}
EXPORT_SYMBOL_GPL(qcom_remove_ssr_subdev);
+/**
+ * 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;
+ u8 pd_asid;
+
+ if (!node)
+ return -EINVAL;
+
+ str = strstr(node->name, "pd");
+ if (!str)
+ return 0;
+
+ str += strlen("pd");
+ return kstrtos8(str, 10, &pd_asid) ? -EINVAL : pd_asid;
+}
+EXPORT_SYMBOL(qcom_get_pd_asid);
Function return type is 's8', but pd_asid is 'u8'
I will update to s8.
+
MODULE_DESCRIPTION("Qualcomm Remoteproc helper driver");
MODULE_LICENSE("GPL v2");
diff --git a/drivers/remoteproc/qcom_common.h
b/drivers/remoteproc/qcom_common.h
index 9ef4449052a9..9f3fb11224aa 100644
--- a/drivers/remoteproc/qcom_common.h
+++ b/drivers/remoteproc/qcom_common.h
@@ -75,5 +75,6 @@ static inline bool
qcom_sysmon_shutdown_acked(struct qcom_sysmon *sysmon)
return false;
}
#endif
+s8 qcom_get_pd_asid(struct device_node *node);
#endif
diff --git a/drivers/remoteproc/qcom_q6v5.c
b/drivers/remoteproc/qcom_q6v5.c
index 192c7aa0e39e..b88bf3a8e53b 100644
--- a/drivers/remoteproc/qcom_q6v5.c
+++ b/drivers/remoteproc/qcom_q6v5.c
@@ -118,7 +118,7 @@ static irqreturn_t q6v5_wdog_interrupt(int irq,
void *data)
return IRQ_HANDLED;
}
-static irqreturn_t q6v5_fatal_interrupt(int irq, void *data)
+irqreturn_t q6v5_fatal_interrupt(int irq, void *data)
{
struct qcom_q6v5 *q6v5 = data;
size_t len;
@@ -139,7 +139,7 @@ static irqreturn_t q6v5_fatal_interrupt(int irq,
void *data)
return IRQ_HANDLED;
}
-static irqreturn_t q6v5_ready_interrupt(int irq, void *data)
+irqreturn_t q6v5_ready_interrupt(int irq, void *data)
{
struct qcom_q6v5 *q6v5 = data;
@@ -183,7 +183,16 @@ static irqreturn_t q6v5_handover_interrupt(int
irq, void *data)
return IRQ_HANDLED;
}
-static irqreturn_t q6v5_stop_interrupt(int irq, void *data)
+irqreturn_t q6v5_spawn_interrupt(int irq, void *data)
+{
+ struct qcom_q6v5 *q6v5 = data;
+
+ complete(&q6v5->spawn_done);
+
+ return IRQ_HANDLED;
+}
+
+irqreturn_t q6v5_stop_interrupt(int irq, void *data)
{
struct qcom_q6v5 *q6v5 = data;
@@ -220,6 +229,28 @@ int qcom_q6v5_request_stop(struct qcom_q6v5
*q6v5, struct qcom_sysmon *sysmon)
}
EXPORT_SYMBOL_GPL(qcom_q6v5_request_stop);
+/**
+ * qcom_q6v5_request_spawn() - request the remote processor to spawn
+ * @q6v5: reference to qcom_q6v5 context
+ *
+ * Return: 0 on success, negative errno on failure
+ */
+int qcom_q6v5_request_spawn(struct qcom_q6v5 *q6v5)
+{
+ int ret;
+
+ ret = qcom_smem_state_update_bits(q6v5->spawn_state,
+ BIT(q6v5->spawn_bit), BIT(q6v5->spawn_bit));
+
+ ret = wait_for_completion_timeout(&q6v5->spawn_done, 5 * HZ);
+
+ qcom_smem_state_update_bits(q6v5->spawn_state,
+ BIT(q6v5->spawn_bit), 0);
+
+ return ret == 0 ? -ETIMEDOUT : 0;
+}
+EXPORT_SYMBOL_GPL(qcom_q6v5_request_spawn);
+
/**
* qcom_q6v5_panic() - panic handler to invoke a stop on the remote
* @q6v5: reference to qcom_q6v5 context
@@ -250,7 +281,8 @@ EXPORT_SYMBOL_GPL(qcom_q6v5_panic);
* Return: 0 on success, negative errno on failure
*/
int qcom_q6v5_init(struct qcom_q6v5 *q6v5, struct platform_device
*pdev,
- struct rproc *rproc, int crash_reason, const char
*load_state,
+ struct rproc *rproc, int remote_id, int crash_reason,
+ const char *load_state,
void (*handover)(struct qcom_q6v5 *q6v5))
{
int ret;
@@ -258,6 +290,7 @@ int qcom_q6v5_init(struct qcom_q6v5 *q6v5, struct
platform_device *pdev,
q6v5->rproc = rproc;
q6v5->dev = &pdev->dev;
q6v5->crash_reason = crash_reason;
+ q6v5->remote_id = remote_id;
q6v5->handover = handover;
init_completion(&q6v5->start_done);
diff --git a/drivers/remoteproc/qcom_q6v5.h
b/drivers/remoteproc/qcom_q6v5.h
index 5a859c41896e..d00568339d46 100644
--- a/drivers/remoteproc/qcom_q6v5.h
+++ b/drivers/remoteproc/qcom_q6v5.h
@@ -18,22 +18,29 @@ struct qcom_q6v5 {
struct qcom_smem_state *state;
struct qmp *qmp;
+ struct qcom_smem_state *shutdown_state;
+ struct qcom_smem_state *spawn_state;
struct icc_path *path;
unsigned stop_bit;
+ unsigned shutdown_bit;
+ unsigned spawn_bit;
int wdog_irq;
int fatal_irq;
int ready_irq;
int handover_irq;
int stop_irq;
+ int spawn_irq;
bool handover_issued;
struct completion start_done;
struct completion stop_done;
+ struct completion spawn_done;
+ int remote_id;
int crash_reason;
bool running;
@@ -43,14 +50,20 @@ struct qcom_q6v5 {
};
int qcom_q6v5_init(struct qcom_q6v5 *q6v5, struct platform_device
*pdev,
- struct rproc *rproc, int crash_reason, const char
*load_state,
+ struct rproc *rproc, int remote_id, int crash_reason,
+ const char *load_state,
void (*handover)(struct qcom_q6v5 *q6v5));
void qcom_q6v5_deinit(struct qcom_q6v5 *q6v5);
int qcom_q6v5_prepare(struct qcom_q6v5 *q6v5);
int qcom_q6v5_unprepare(struct qcom_q6v5 *q6v5);
int qcom_q6v5_request_stop(struct qcom_q6v5 *q6v5, struct
qcom_sysmon *sysmon);
+int qcom_q6v5_request_spawn(struct qcom_q6v5 *q6v5);
int qcom_q6v5_wait_for_start(struct qcom_q6v5 *q6v5, int timeout);
unsigned long qcom_q6v5_panic(struct qcom_q6v5 *q6v5);
+irqreturn_t q6v5_fatal_interrupt(int irq, void *data);
+irqreturn_t q6v5_ready_interrupt(int irq, void *data);
+irqreturn_t q6v5_spawn_interrupt(int irq, void *data);
+irqreturn_t q6v5_stop_interrupt(int irq, void *data);
#endif
diff --git a/drivers/remoteproc/qcom_q6v5_adsp.c
b/drivers/remoteproc/qcom_q6v5_adsp.c
index 08d8dad22ca7..bf8909ad5ff5 100644
--- a/drivers/remoteproc/qcom_q6v5_adsp.c
+++ b/drivers/remoteproc/qcom_q6v5_adsp.c
@@ -733,8 +733,9 @@ static int adsp_probe(struct platform_device *pdev)
if (ret)
goto disable_pm;
- ret = qcom_q6v5_init(&adsp->q6v5, pdev, rproc,
desc->crash_reason_smem,
- desc->load_state, qcom_adsp_pil_handover);
+ ret = qcom_q6v5_init(&adsp->q6v5, pdev, rproc, QCOM_SMEM_HOST_ANY,
+ desc->crash_reason_smem, desc->load_state,
+ qcom_adsp_pil_handover);
if (ret)
goto disable_pm;
diff --git a/drivers/remoteproc/qcom_q6v5_mpd.c
b/drivers/remoteproc/qcom_q6v5_mpd.c
new file mode 100644
index 000000000000..853aa3bc5859
--- /dev/null
+++ b/drivers/remoteproc/qcom_q6v5_mpd.c
@@ -0,0 +1,668 @@
+// 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/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 <linux/firmware/qcom/qcom_scm.h>
+#include <linux/interrupt.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
+
+/**
+ * enum state - state of a wcss (private)
+ * @WCSS_NORMAL: subsystem is operating normally
+ * @WCSS_CRASHED: subsystem has crashed and hasn't been shutdown
+ * @WCSS_RESTARTING: subsystem has been shutdown and is now restarting
+ * @WCSS_SHUTDOWN: subsystem has been shutdown
+ *
+ */
+enum q6_wcss_state {
+ WCSS_NORMAL,
+ WCSS_CRASHED,
+ WCSS_RESTARTING,
+ 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;
+ u32 version;
+ s8 pd_asid;
+ enum q6_wcss_state state;
+};
+
+struct wcss_data {
+ int (*init_irq)(struct qcom_q6v5 *q6, struct platform_device *pdev,
+ struct rproc *rproc, int remote_id,
+ int crash_reason, const char *load_state,
+ void (*handover)(struct qcom_q6v5 *q6));
+ const char *q6_firmware_name;
+ int crash_reason_smem;
+ int remote_id;
+ u32 version;
+ const char *ssr_name;
+ const struct rproc_ops *ops;
+ bool need_auto_boot;
+ bool glink_subdev_required;
+ s8 pd_asid;
+ 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);
+};
+
+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;
+
+ desc = of_device_get_match_data(wcss->dev);
+ if (!desc)
+ return -EINVAL;
+
+ 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");
+
+ /* Bring userpd wcss state to default value */
+ for_each_available_child_of_node(wcss->dev->of_node, upd_np) {
+ if (!strstr(upd_np->name, "pd"))
+ continue;
+ upd_pdev = of_find_device_by_node(upd_np);
+ 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 = of_device_get_match_data(wcss->dev);
+ int ret;
+
+ if (desc->reset_seq) {
+ ret = qti_scm_int_radio_powerup(desc->pasid);
+ if (ret) {
+ dev_err(wcss->dev, "failed to power up ahb pd\n");
+ return ret;
+ }
+ }
+
+ if (wcss->q6.spawn_bit) {
+ ret = q6_wcss_spawn_pd(rproc);
+ if (ret)
+ return ret;
+ }
+
+ wcss->state = WCSS_NORMAL;
+ return 0;
+}
+
+static int q6_wcss_stop(struct rproc *rproc)
+{
+ struct q6_wcss *wcss = rproc->priv;
+ int ret;
+ const struct wcss_data *desc =
+ of_device_get_match_data(wcss->dev);
+
+ if (!desc)
+ return -EINVAL;
+
+ 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 = of_device_get_match_data(wcss->dev);
+ int ret;
+
+ 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->reset_seq) {
+ ret = qti_scm_int_radio_powerdown(desc->pasid);
+ if (ret) {
+ dev_err(wcss->dev, "failed to power down pd\n");
+ return ret;
+ }
+ }
+
+ if (rproc->state != RPROC_CRASHED)
+ 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 *m3_fw;
+ int ret;
+ const char *m3_fw_name;
+ struct device_node *upd_np;
+ struct platform_device *upd_pdev;
+ const struct wcss_data *desc =
+ of_device_get_match_data(wcss->dev);
+
+ if (!desc)
+ return -EINVAL;
+
+ /* load m3 firmware */
+ for_each_available_child_of_node(wcss->dev->of_node, upd_np) {
+ if (!strstr(upd_np->name, "pd"))
+ continue;
+ upd_pdev = of_find_device_by_node(upd_np);
+
+ ret = of_property_read_string(upd_np, "m3_firmware",
+ &m3_fw_name);
+ if (!ret && m3_fw_name) {
+ ret = request_firmware(&m3_fw, m3_fw_name,
+ &upd_pdev->dev);
+ if (ret)
+ continue;
+
+ ret = qcom_mdt_load_no_init(wcss->dev, m3_fw,
+ m3_fw_name, 0,
+ wcss->mem_region,
+ wcss->mem_phys,
+ wcss->mem_size,
+ &wcss->mem_reloc);
+
+ release_firmware(m3_fw);
+
+ if (ret) {
+ dev_err(wcss->dev,
+ "can't load m3_fw.bXX ret:%d\n", ret);
+ return ret;
+ }
+ }
+ }
+
+ return qcom_mdt_load(wcss->dev, fw, rproc->firmware,
+ desc->pasid, wcss->mem_region,
+ wcss->mem_phys, wcss->mem_size,
+ &wcss->mem_reloc);
+}
+
+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);
+ int ret;
+ const struct wcss_data *desc =
+ of_device_get_match_data(wcss->dev);
+
+ if (!desc)
+ return -EINVAL;
+
+ 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;
+
+ if (wcss->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", wcss->pd_asid);
+ strlcat(interrupt, "_", BUF_SIZE);
+ strlcat(interrupt, tmp, BUF_SIZE);
+
snprintf(interrupt, BUF_SIZE, "q6v5_wcss_userpd%d_%s", wcss->pd_asid,
tmp);
Sure, i will use it.
+ 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 remote_id, 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->remote_id = remote_id;
+ 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;
+
+ desc = of_device_get_match_data(&pdev->dev);
+ if (!desc)
+ return -EINVAL;
+
+ rproc = rproc_alloc(&pdev->dev, pdev->name, desc->ops,
+ desc->q6_firmware_name, sizeof(*wcss));
+ if (!rproc) {
+ dev_err(&pdev->dev, "failed to allocate rproc\n");
+ return -ENOMEM;
+ }
+ wcss = rproc->priv;
+ wcss->dev = &pdev->dev;
+ wcss->version = desc->version;
+
+ 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->remote_id,
+ desc->crash_reason_smem, NULL, NULL);
+ if (ret) {
+ if (wcss->version == Q6_IPQ)
+ goto free_rproc;
+ else
+ dev_info(wcss->dev,
+ "userpd irq registration failed\n");
+ }
+ }
+
+ 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 = desc->need_auto_boot;
+ 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;
+
+ if (wcss->version == Q6_IPQ)
+ 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,
+ .q6_firmware_name = "IPQ5018/q6_fw.mdt",
+ .crash_reason_smem = WCSS_CRASH_REASON,
+ .remote_id = WCSS_SMEM_HOST,
+ .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,
+ .q6_firmware_name = "IPQ9574/q6_fw.mdt",
+ .crash_reason_smem = WCSS_CRASH_REASON,
+ .remote_id = WCSS_SMEM_HOST,
+ .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,
+ .q6_firmware_name = "IPQ5018/q6_fw.mdt",
+ .crash_reason_smem = WCSS_CRASH_REASON,
+ .remote_id = WCSS_SMEM_HOST,
+ .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,
+};
+
+static const struct wcss_data wcss_ahb_ipq9574_res_init = {
+ .init_irq = init_irq,
+ .q6_firmware_name = "IPQ9574/q6_fw.mdt",
+ .crash_reason_smem = WCSS_CRASH_REASON,
+ .remote_id = WCSS_SMEM_HOST,
+ .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,
+ .q6_firmware_name = "IPQ5018/q6_fw.mdt",
+ .crash_reason_smem = WCSS_CRASH_REASON,
+ .ops = &wcss_ahb_pcie_ipq5018_ops,
+ .version = WCSS_PCIE_IPQ,
+ .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/remoteproc/qcom_q6v5_mss.c
b/drivers/remoteproc/qcom_q6v5_mss.c
index ab053084f7a2..48685bb85718 100644
--- a/drivers/remoteproc/qcom_q6v5_mss.c
+++ b/drivers/remoteproc/qcom_q6v5_mss.c
@@ -28,6 +28,7 @@
#include <linux/soc/qcom/mdt_loader.h>
#include <linux/iopoll.h>
#include <linux/slab.h>
+#include <linux/soc/qcom/smem.h>
#include "remoteproc_internal.h"
#include "qcom_common.h"
@@ -2070,7 +2071,8 @@ static int q6v5_probe(struct platform_device
*pdev)
qproc->need_mem_protection = desc->need_mem_protection;
qproc->has_mba_logs = desc->has_mba_logs;
- ret = qcom_q6v5_init(&qproc->q6v5, pdev, rproc,
MPSS_CRASH_REASON_SMEM, "modem",
+ ret = qcom_q6v5_init(&qproc->q6v5, pdev, rproc, QCOM_SMEM_HOST_ANY,
+ MPSS_CRASH_REASON_SMEM, "modem",
qcom_msa_handover);
if (ret)
goto detach_proxy_pds;
diff --git a/drivers/remoteproc/qcom_q6v5_pas.c
b/drivers/remoteproc/qcom_q6v5_pas.c
index 0871108fb4dc..7408218042e5 100644
--- a/drivers/remoteproc/qcom_q6v5_pas.c
+++ b/drivers/remoteproc/qcom_q6v5_pas.c
@@ -723,7 +723,8 @@ static int adsp_probe(struct platform_device *pdev)
goto free_rproc;
adsp->proxy_pd_count = ret;
- ret = qcom_q6v5_init(&adsp->q6v5, pdev, rproc,
desc->crash_reason_smem, desc->load_state,
+ ret = qcom_q6v5_init(&adsp->q6v5, pdev, rproc, QCOM_SMEM_HOST_ANY,
+ desc->crash_reason_smem, desc->load_state,
qcom_pas_handover);
if (ret)
goto detach_proxy_pds;
diff --git a/drivers/soc/qcom/mdt_loader.c
b/drivers/soc/qcom/mdt_loader.c
index 33dd8c315eb7..a5ca5a078943 100644
--- a/drivers/soc/qcom/mdt_loader.c
+++ b/drivers/soc/qcom/mdt_loader.c
@@ -16,6 +16,40 @@
#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 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
+ */
+
+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 +392,259 @@ 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) {
+ memset_io(pd_dma->pt[tmp], 0, PAGE_SIZE);
+ memcpy_toio(pd_dma->pt[tmp], seg_fw->data + offset_tmp, size);
Is the memset to zero needed if it is going to be overwritten with
memcpy?
Can't the remaining area of the last page alone be memset?
-Varada
Sure, i will do it.
Thanks & Regards,
Manikanta.
+ 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 +697,32 @@ 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/firmware/qcom/qcom_scm.h
b/include/linux/firmware/qcom/qcom_scm.h
index 1e449a5d7f5c..0bdb9b506ad1 100644
--- a/include/linux/firmware/qcom/qcom_scm.h
+++ b/include/linux/firmware/qcom/qcom_scm.h
@@ -81,6 +81,9 @@ extern int qcom_scm_pas_mem_setup(u32 peripheral,
phys_addr_t addr,
extern int qcom_scm_pas_auth_and_reset(u32 peripheral);
extern int qcom_scm_pas_shutdown(u32 peripheral);
extern bool qcom_scm_pas_supported(u32 peripheral);
+int qti_scm_int_radio_powerup(u32 peripheral);
+int qti_scm_int_radio_powerdown(u32 peripheral);
+int qti_scm_pdseg_memcpy_v2(u32 peripheral, int phno, dma_addr_t
dma, int seg_cnt);
extern int qcom_scm_io_readl(phys_addr_t addr, unsigned int *val);
extern int qcom_scm_io_writel(phys_addr_t addr, unsigned int val);
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)
----- End forwarded message -----