Add support for sc7280 WPSS PIL loading

PATCH Superseded Rakesh Pillai 3 participants 6 messages Sep 17, 2021 – Sep 23, 2021

Subsystems (3)

Device tree bindings Arm Qualcomm mailing list Remote processor (remoteproc)

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Rakesh Pillai

author

2021-09-17 10:36 UTC #0 lore raw

v4 cover Add support for sc7280 WPSS PIL loading

Add support for PIL loading of WPSS co-processor for SC7280 SOCs.

Changes from v3:
- Add separate dt-bindings file for sc7280-wpss-pil
- Fix the handling of single power domains for adsp/cdsp from v3

Rakesh Pillai (2):
dt-bindings: remoteproc: qcom: Add SC7280 WPSS support
remoteproc: qcom: q6v5_wpss: Add support for sc7280 WPSS

 .../bindings/remoteproc/qcom,sc7280-wpss-pil.yaml  | 198 +++++++++++++++++++
 drivers/remoteproc/qcom_q6v5_adsp.c                | 209 +++++++++++++++++++--
 2 files changed, 392 insertions(+), 15 deletions(-)
 create mode 100644 Documentation/devicetree/bindings/remoteproc/qcom,sc7280-wpss-pil.yaml

Signature · 1 line

2.7.4

Rakesh Pillai

author

2021-09-17 10:36 UTC #1 lore raw

PATCH v4 1/2 dt-bindings: remoteproc: qcom: Add SC7280 WPSS support

Add WPSS PIL loading support for SC7280 SoCs.

Signed-off-by Rakesh Pillai <[email protected]>

---
 .../bindings/remoteproc/qcom,sc7280-wpss-pil.yaml  | 198 +++++++++++++++++++++
 1 file changed, 198 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/remoteproc/qcom,sc7280-wpss-pil.yaml

Documentation/devicetree/bindings/remoteproc/qcom,sc7280-wpss-pil.yaml new file +198 -0

new file mode 100644
index 0000000..896d5f47
@@ -0,0 +1,198 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/remoteproc/qcom,sc7280-wpss-pil.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Qualcomm SC7280 WPSS Peripheral Image Loader
+
+maintainers:
+  - Bjorn Andersson <[email protected]>
+
+description:
+  This document defines the binding for a component that loads and boots firmware
+  on the Qualcomm Technology Inc. WPSS.
+
+properties:
+  compatible:
+    enum:
+      - qcom,sc7280-wpss-pil
+
+  reg:
+    maxItems: 1
+    description:
+      The base address and size of the qdsp6ss register
+
+  interrupts-extended:
+    minItems: 6
+    items:
+      - description: Watchdog interrupt
+      - description: Fatal interrupt
+      - description: Ready interrupt
+      - description: Handover interrupt
+      - description: Stop acknowledge interrupt
+      - description: Shutdown acknowledge interrupt
+
+  interrupt-names:
+    minItems: 6
+    items:
+      - const: wdog
+      - const: fatal
+      - const: ready
+      - const: handover
+      - const: stop-ack
+      - const: shutdown-ack
+
+  clocks:
+    minItems: 4
+    items:
+      - description: GCC WPSS AHB BDG Master clock
+      - description: GCC WPSS AHB clock
+      - description: GCC WPSS RSCP clock
+      - description: XO clock
+
+  clock-names:
+    minItems: 4
+    items:
+      - const: gcc_wpss_ahb_bdg_mst_clk
+      - const: gcc_wpss_ahb_clk
+      - const: gcc_wpss_rscp_clk
+      - const: xo
+
+  power-domains:
+    minItems: 2
+    items:
+      - description: CX power domain
+      - description: MX power domain
+
+  power-domain-names:
+    minItems: 2
+    items:
+      - const: cx
+      - const: mx
+
+  resets:
+    minItems: 2
+    items:
+      - description: AOSS restart
+      - description: PDC SYNC
+
+  reset-names:
+    minItems: 2
+    items:
+      - const: restart
+      - const: pdc_sync
+
+  memory-region:
+    maxItems: 1
+    description: Reference to the reserved-memory for the Hexagon core
+
+  qcom,halt-regs:
+    $ref: /schemas/types.yaml#/definitions/phandle-array
+    description:
+      Phandle reference to a syscon representing TCSR followed by the
+      three offsets within syscon for q6, modem and nc halt registers.
+
+  qcom,qmp:
+    $ref: /schemas/types.yaml#/definitions/phandle
+    description: Reference to the AOSS side-channel message RAM.
+
+  qcom,smem-states:
+    $ref: /schemas/types.yaml#/definitions/phandle-array
+    description: States used by the AP to signal the Hexagon core
+    items:
+      - description: Stop the modem
+
+  qcom,smem-state-names:
+    $ref: /schemas/types.yaml#/definitions/string-array
+    description: The names of the state bits used for SMP2P output
+    items:
+      - const: stop
+
+  glink-edge:
+    type: object
+    description:
+      Qualcomm G-Link subnode which represents communication edge, channels
+      and devices related to the ADSP.
+
+required:
+  - compatible
+  - reg
+  - interrupts-extended
+  - interrupt-names
+  - clocks
+  - clock-names
+  - power-domains
+  - power-domain-names
+  - reset
+  - reset-names
+  - qcom,halt-regs
+  - memory-region
+  - qcom,qmp
+  - qcom,smem-states
+  - qcom,smem-state-names
+  - glink-edge
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+    #include <dt-bindings/clock/qcom,gcc-sc7280.h>
+    #include <dt-bindings/clock/qcom,rpmh.h>
+    #include <dt-bindings/power/qcom-rpmpd.h>
+    #include <dt-bindings/reset/qcom,sdm845-aoss.h>
+    #include <dt-bindings/reset/qcom,sdm845-pdc.h>
+    #include <dt-bindings/mailbox/qcom-ipcc.h>
+    remoteproc@8a00000 {
+        compatible = "qcom,sc7280-wpss-pil";
+        reg = <0x08a00000 0x10000>;
+
+        interrupts-extended = <&intc GIC_SPI 587 IRQ_TYPE_EDGE_RISING>,
+                              <&wpss_smp2p_in 0 IRQ_TYPE_EDGE_RISING>,
+                              <&wpss_smp2p_in 1 IRQ_TYPE_EDGE_RISING>,
+                              <&wpss_smp2p_in 2 IRQ_TYPE_EDGE_RISING>,
+                              <&wpss_smp2p_in 3 IRQ_TYPE_EDGE_RISING>,
+                              <&wpss_smp2p_in 7 IRQ_TYPE_EDGE_RISING>;
+        interrupt-names = "wdog", "fatal", "ready", "handover",
+                          "stop-ack", "shutdown-ack";
+
+        clocks = <&gcc GCC_WPSS_AHB_BDG_MST_CLK>,
+                 <&gcc GCC_WPSS_AHB_CLK>,
+                 <&gcc GCC_WPSS_RSCP_CLK>,
+                 <&rpmhcc RPMH_CXO_CLK>;
+        clock-names = "gcc_wpss_ahb_bdg_mst_clk",
+                      "gcc_wpss_ahb_clk",
+                      "gcc_wpss_rscp_clk",
+                      "xo";
+
+        power-domains = <&rpmhpd SC7280_CX>,
+                        <&rpmhpd SC7280_MX>;
+        power-domain-names = "cx", "mx";
+
+        memory-region = <&wpss_mem>;
+
+        qcom,qmp = <&aoss_qmp>;
+
+        qcom,smem-states = <&wpss_smp2p_out 0>;
+        qcom,smem-state-names = "stop";
+
+        resets = <&aoss_reset AOSS_CC_WCSS_RESTART>,
+                 <&pdc_reset PDC_WPSS_SYNC_RESET>;
+        reset-names = "restart", "pdc_sync";
+
+        qcom,halt-regs = <&tcsr_mutex 0x37000>;
+
+        status = "disabled";
+
+        glink-edge {
+            interrupts-extended = <&ipcc IPCC_CLIENT_WPSS
+                                         IPCC_MPROC_SIGNAL_GLINK_QMP
+                                         IRQ_TYPE_EDGE_RISING>;
+            mboxes = <&ipcc IPCC_CLIENT_WPSS
+                            IPCC_MPROC_SIGNAL_GLINK_QMP>;
+
+            label = "wpss";
+            qcom,remote-pid = <13>;
+        };
+    };

Signature · 1 line

2.7.4

Rakesh Pillai

author

2021-09-17 10:36 UTC #5 lore raw

PATCH v4 2/2 remoteproc: qcom: q6v5_wpss: Add support for sc7280 WPSS

In reply to Rakesh Pillai

Add support for PIL loading of WPSS processor for SC7280
- WPSS boot will be requested by the wifi driver and hence disable auto-boot for WPSS.
- Add a separate shutdown sequence handler for WPSS.
- Add multiple power-domain voting support

Signed-off-by Rakesh Pillai <[email protected]>

Reviewed-by Stephen Boyd <[email protected]>

---
 drivers/remoteproc/qcom_q6v5_adsp.c | 209 +++++++++++++++++++++++++++++++++---
 1 file changed, 194 insertions(+), 15 deletions(-)

drivers/remoteproc/qcom_q6v5_adsp.c +194 ~~-15~~

index 098362e6..b6d3c3d 100644
@@ -32,6 +32,7 @@
 
 /* time out value */
 #define ACK_TIMEOUT			1000
+#define ACK_TIMEOUT_US			1000000
 #define BOOT_FSM_TIMEOUT		10000
 /* mask values */
 #define EVB_MASK			GENMASK(27, 4)

@@ -51,6 +52,8 @@
 #define QDSP6SS_CORE_CBCR	0x20
 #define QDSP6SS_SLEEP_CBCR	0x3c
 
+#define QCOM_Q6V5_RPROC_PROXY_PD_MAX	3
+
 struct adsp_pil_data {
 	int crash_reason_smem;
 	const char *firmware_name;

@@ -58,9 +61,13 @@ struct adsp_pil_data {
 	const char *ssr_name;
 	const char *sysmon_name;
 	int ssctl_id;
+	bool is_wpss;
+	bool auto_boot;
 
 	const char **clk_ids;
 	int num_clks;
+	const char **proxy_pd_names;
+	const char *load_state;
 };
 
 struct qcom_adsp {

@@ -93,11 +100,143 @@ struct qcom_adsp {
 	void *mem_region;
 	size_t mem_size;
 
+	struct device *proxy_pds[QCOM_Q6V5_RPROC_PROXY_PD_MAX];
+	int proxy_pd_count;
+
 	struct qcom_rproc_glink glink_subdev;
 	struct qcom_rproc_ssr ssr_subdev;
 	struct qcom_sysmon *sysmon;
+
+	int (*shutdown)(struct qcom_adsp *adsp);
 };
 
+static int qcom_rproc_pds_attach(struct device *dev, struct device **devs,
+				 const char **pd_names)
+{
+	size_t num_pds = 0;
+	int ret;
+	int i;
+
+	if (!pd_names)
+		return 0;
+
+	/* Handle single power domain */
+	if (dev->pm_domain) {
+		devs[0] = dev;
+		pm_runtime_enable(dev);
+		return 1;
+	}
+
+	while (pd_names[num_pds])
+		num_pds++;
+
+	for (i = 0; i < num_pds; i++) {
+		devs[i] = dev_pm_domain_attach_by_name(dev, pd_names[i]);
+		if (IS_ERR_OR_NULL(devs[i])) {
+			ret = PTR_ERR(devs[i]) ? : -ENODATA;
+			goto unroll_attach;
+		}
+	}
+
+	return num_pds;
+
+unroll_attach:
+	for (i--; i >= 0; i--)
+		dev_pm_domain_detach(devs[i], false);
+
+	return ret;
+}
+
+static void qcom_rproc_pds_detach(struct qcom_adsp *adsp, struct device **pds,
+				  size_t pd_count)
+{
+	struct device *dev = adsp->dev;
+	int i;
+
+	/* Handle single power domain */
+	if (dev->pm_domain && pd_count) {
+		pm_runtime_disable(dev);
+		return;
+	}
+
+	for (i = 0; i < pd_count; i++)
+		dev_pm_domain_detach(pds[i], false);
+}
+
+static int qcom_rproc_pds_enable(struct qcom_adsp *adsp, struct device **pds,
+				 size_t pd_count)
+{
+	int ret;
+	int i;
+
+	for (i = 0; i < pd_count; i++) {
+		dev_pm_genpd_set_performance_state(pds[i], INT_MAX);
+		ret = pm_runtime_get_sync(pds[i]);
+		if (ret < 0) {
+			pm_runtime_put_noidle(pds[i]);
+			dev_pm_genpd_set_performance_state(pds[i], 0);
+			goto unroll_pd_votes;
+		}
+	}
+
+	return 0;
+
+unroll_pd_votes:
+	for (i--; i >= 0; i--) {
+		dev_pm_genpd_set_performance_state(pds[i], 0);
+		pm_runtime_put(pds[i]);
+	}
+
+	return ret;
+}
+
+static void qcom_rproc_pds_disable(struct qcom_adsp *adsp, struct device **pds,
+				   size_t pd_count)
+{
+	int i;
+
+	for (i = 0; i < pd_count; i++) {
+		dev_pm_genpd_set_performance_state(pds[i], 0);
+		pm_runtime_put(pds[i]);
+	}
+}
+
+static int qcom_wpss_shutdown(struct qcom_adsp *adsp)
+{
+	unsigned int val;
+
+	regmap_write(adsp->halt_map, adsp->halt_lpass + LPASS_HALTREQ_REG, 1);
+
+	/* Wait for halt ACK from QDSP6 */
+	regmap_read_poll_timeout(adsp->halt_map,
+				 adsp->halt_lpass + LPASS_HALTACK_REG, val,
+				 val, 1000, ACK_TIMEOUT_US);
+
+	/* Assert the WPSS PDC Reset */
+	reset_control_assert(adsp->pdc_sync_reset);
+	/* Place the WPSS processor into reset */
+	reset_control_assert(adsp->restart);
+	/* wait after asserting subsystem restart from AOSS */
+	usleep_range(200, 205);
+	/* Remove the WPSS reset */
+	reset_control_deassert(adsp->restart);
+	/* De-assert the WPSS PDC Reset */
+	reset_control_deassert(adsp->pdc_sync_reset);
+
+	usleep_range(100, 105);
+
+	clk_bulk_disable_unprepare(adsp->num_clks, adsp->clks);
+
+	regmap_write(adsp->halt_map, adsp->halt_lpass + LPASS_HALTREQ_REG, 0);
+
+	/* Wait for halt ACK from QDSP6 */
+	regmap_read_poll_timeout(adsp->halt_map,
+				 adsp->halt_lpass + LPASS_HALTACK_REG, val,
+				 !val, 1000, ACK_TIMEOUT_US);
+
+	return 0;
+}
+
 static int qcom_adsp_shutdown(struct qcom_adsp *adsp)
 {
 	unsigned long timeout;

@@ -193,12 +332,10 @@ static int adsp_start(struct rproc *rproc)
 	if (ret)
 		goto disable_irqs;
 
-	dev_pm_genpd_set_performance_state(adsp->dev, INT_MAX);
-	ret = pm_runtime_get_sync(adsp->dev);
-	if (ret) {
-		pm_runtime_put_noidle(adsp->dev);
+	ret = qcom_rproc_pds_enable(adsp, adsp->proxy_pds,
+				    adsp->proxy_pd_count);
+	if (ret < 0)
 		goto disable_xo_clk;
-	}
 
 	ret = clk_bulk_prepare_enable(adsp->num_clks, adsp->clks);
 	if (ret) {

@@ -243,8 +380,7 @@ static int adsp_start(struct rproc *rproc)
 disable_adsp_clks:
 	clk_bulk_disable_unprepare(adsp->num_clks, adsp->clks);
 disable_power_domain:
-	dev_pm_genpd_set_performance_state(adsp->dev, 0);
-	pm_runtime_put(adsp->dev);
+	qcom_rproc_pds_disable(adsp, adsp->proxy_pds, adsp->proxy_pd_count);
 disable_xo_clk:
 	clk_disable_unprepare(adsp->xo);
 disable_irqs:

@@ -258,8 +394,7 @@ static void qcom_adsp_pil_handover(struct qcom_q6v5 *q6v5)
 	struct qcom_adsp *adsp = container_of(q6v5, struct qcom_adsp, q6v5);
 
 	clk_disable_unprepare(adsp->xo);
-	dev_pm_genpd_set_performance_state(adsp->dev, 0);
-	pm_runtime_put(adsp->dev);
+	qcom_rproc_pds_disable(adsp, adsp->proxy_pds, adsp->proxy_pd_count);
 }
 
 static int adsp_stop(struct rproc *rproc)

@@ -272,7 +407,7 @@ static int adsp_stop(struct rproc *rproc)
 	if (ret == -ETIMEDOUT)
 		dev_err(adsp->dev, "timed out on wait\n");
 
-	ret = qcom_adsp_shutdown(adsp);
+	ret = adsp->shutdown(adsp);
 	if (ret)
 		dev_err(adsp->dev, "failed to shutdown: %d\n", ret);

@@ -441,6 +576,8 @@ static int adsp_probe(struct platform_device *pdev)
 		dev_err(&pdev->dev, "unable to allocate remoteproc\n");
 		return -ENOMEM;
 	}
+
+	rproc->auto_boot = desc->auto_boot;
 	rproc_coredump_set_elf_info(rproc, ELFCLASS32, EM_NONE);
 
 	adsp = (struct qcom_adsp *)rproc->priv;

@@ -449,6 +586,11 @@ static int adsp_probe(struct platform_device *pdev)
 	adsp->info_name = desc->sysmon_name;
 	platform_set_drvdata(pdev, adsp);
 
+	if (desc->is_wpss)
+		adsp->shutdown = qcom_wpss_shutdown;
+	else
+		adsp->shutdown = qcom_adsp_shutdown;
+
 	ret = adsp_alloc_memory_region(adsp);
 	if (ret)
 		goto free_rproc;

@@ -457,7 +599,13 @@ static int adsp_probe(struct platform_device *pdev)
 	if (ret)
 		goto free_rproc;
 
-	pm_runtime_enable(adsp->dev);
+	ret = qcom_rproc_pds_attach(adsp->dev, adsp->proxy_pds,
+				    desc->proxy_pd_names);
+	if (ret < 0) {
+		dev_err(&pdev->dev, "Failed to attach proxy power domains\n");
+		goto free_rproc;
+	}
+	adsp->proxy_pd_count = ret;
 
 	ret = adsp_init_reset(adsp);
 	if (ret)

@@ -467,8 +615,8 @@ 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, NULL,
-			     qcom_adsp_pil_handover);
+	ret = qcom_q6v5_init(&adsp->q6v5, pdev, rproc, desc->crash_reason_smem,
+			     desc->load_state, qcom_adsp_pil_handover);
 	if (ret)
 		goto disable_pm;

@@ -489,7 +637,8 @@ static int adsp_probe(struct platform_device *pdev)
 	return 0;
 
 disable_pm:
-	pm_runtime_disable(adsp->dev);
+	qcom_rproc_pds_detach(adsp, adsp->proxy_pds, adsp->proxy_pd_count);
+
 free_rproc:
 	rproc_free(rproc);

@@ -506,7 +655,7 @@ static int adsp_remove(struct platform_device *pdev)
 	qcom_remove_glink_subdev(adsp->rproc, &adsp->glink_subdev);
 	qcom_remove_sysmon_subdev(adsp->sysmon);
 	qcom_remove_ssr_subdev(adsp->rproc, &adsp->ssr_subdev);
-	pm_runtime_disable(adsp->dev);
+	qcom_rproc_pds_detach(adsp, adsp->proxy_pds, adsp->proxy_pd_count);
 	rproc_free(adsp->rproc);
 
 	return 0;

@@ -518,11 +667,16 @@ static const struct adsp_pil_data adsp_resource_init = {
 	.ssr_name = "lpass",
 	.sysmon_name = "adsp",
 	.ssctl_id = 0x14,
+	.is_wpss = false,
+	.auto_boot = true,
 	.clk_ids = (const char*[]) {
 		"sway_cbcr", "lpass_ahbs_aon_cbcr", "lpass_ahbm_aon_cbcr",
 		"qdsp6ss_xo", "qdsp6ss_sleep", "qdsp6ss_core", NULL
 	},
 	.num_clks = 7,
+	.proxy_pd_names = (const char*[]) {
+		"cx", NULL
+	},
 };
 
 static const struct adsp_pil_data cdsp_resource_init = {

@@ -531,15 +685,40 @@ static const struct adsp_pil_data cdsp_resource_init = {
 	.ssr_name = "cdsp",
 	.sysmon_name = "cdsp",
 	.ssctl_id = 0x17,
+	.is_wpss = false,
+	.auto_boot = true,
 	.clk_ids = (const char*[]) {
 		"sway", "tbu", "bimc", "ahb_aon", "q6ss_slave", "q6ss_master",
 		"q6_axim", NULL
 	},
 	.num_clks = 7,
+	.proxy_pd_names = (const char*[]) {
+		"cx", NULL
+	},
+};
+
+static const struct adsp_pil_data wpss_resource_init = {
+	.crash_reason_smem = 626,
+	.firmware_name = "wpss.mdt",
+	.ssr_name = "wpss",
+	.sysmon_name = "wpss",
+	.ssctl_id = 0x19,
+	.is_wpss = true,
+	.auto_boot = false,
+	.load_state = "wpss",
+	.clk_ids = (const char*[]) {
+		"gcc_wpss_ahb_bdg_mst_clk", "gcc_wpss_ahb_clk",
+		"gcc_wpss_rscp_clk", NULL
+	},
+	.num_clks = 3,
+	.proxy_pd_names = (const char*[]) {
+		"cx", "mx", NULL
+	},
 };
 
 static const struct of_device_id adsp_of_match[] = {
 	{ .compatible = "qcom,qcs404-cdsp-pil", .data = &cdsp_resource_init },
+	{ .compatible = "qcom,sc7280-wpss-pil", .data = &wpss_resource_init },
 	{ .compatible = "qcom,sdm845-adsp-pil", .data = &adsp_resource_init },
 	{ },
 };

Signature · 1 line

2.7.4