linux-kernel - [PATCH 1/7] venus: firmware: enable no tz fw loading for sc7280

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

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <1621417008-6117-2-git-send-email-dikshita@codeaurora.org>
Date:   Wed, 19 May 2021 15:06:42 +0530
From:   Dikshita Agarwal <dikshita@...eaurora.org>
To:     linux-media@...r.kernel.org, stanimir.varbanov@...aro.org
Cc:     linux-kernel@...r.kernel.org, vgarodia@...eaurora.org,
        Dikshita Agarwal <dikshita@...eaurora.org>
Subject: [PATCH 1/7] venus: firmware: enable no tz fw loading for sc7280

- Enable no tz FW loading.
- add routine to reset XTSS.

Signed-off-by: Dikshita Agarwal <dikshita@...eaurora.org>
---
 drivers/media/platform/qcom/venus/firmware.c     | 42 ++++++++++++++++++++----
 drivers/media/platform/qcom/venus/hfi_venus_io.h |  2 ++
 2 files changed, 38 insertions(+), 6 deletions(-)

diff --git a/drivers/media/platform/qcom/venus/firmware.c b/drivers/media/platform/qcom/venus/firmware.c
index 227bd3b..e05e01a 100644
--- a/drivers/media/platform/qcom/venus/firmware.c
+++ b/drivers/media/platform/qcom/venus/firmware.c
@@ -42,6 +42,22 @@ static void venus_reset_cpu(struct venus_core *core)
 	writel(0, wrapper_base + WRAPPER_A9SS_SW_RESET);
 }
 
+static void venus_reset_cpu_V6(struct venus_core *core)
+{
+	u32 fw_size = core->fw.mapped_mem_size;
+	void __iomem *wrapper_tz_base = core->wrapper_tz_base;
+
+	writel(0, wrapper_tz_base + WRAPPER_FW_START_ADDR);
+	writel(fw_size, wrapper_tz_base + WRAPPER_FW_END_ADDR);
+	writel(0, wrapper_tz_base + WRAPPER_CPA_START_ADDR);
+	writel(fw_size, wrapper_tz_base + WRAPPER_CPA_END_ADDR);
+	writel(fw_size, wrapper_tz_base + WRAPPER_NONPIX_START_ADDR);
+	writel(fw_size, wrapper_tz_base + WRAPPER_NONPIX_END_ADDR);
+
+	/* Bring XTSS out of reset */
+	writel(0, wrapper_tz_base + WRAPPER_TZ_XTSS_SW_RESET);
+}
+
 int venus_set_hw_state(struct venus_core *core, bool resume)
 {
 	int ret;
@@ -54,10 +70,15 @@ int venus_set_hw_state(struct venus_core *core, bool resume)
 	}
 
 	if (resume) {
-		venus_reset_cpu(core);
+		if (IS_V6(core))
+			venus_reset_cpu_V6(core);
+		else
+			venus_reset_cpu(core);
 	} else {
 		if (!IS_V6(core))
 			writel(1, core->wrapper_base + WRAPPER_A9SS_SW_RESET);
+		else
+			writel(1, core->wrapper_tz_base + WRAPPER_TZ_XTSS_SW_RESET);
 	}
 
 	return 0;
@@ -149,7 +170,10 @@ static int venus_boot_no_tz(struct venus_core *core, phys_addr_t mem_phys,
 		return ret;
 	}
 
-	venus_reset_cpu(core);
+	if (IS_V6(core))
+		venus_reset_cpu_V6(core);
+	else
+		venus_reset_cpu(core);
 
 	return 0;
 }
@@ -162,12 +186,18 @@ static int venus_shutdown_no_tz(struct venus_core *core)
 	u32 reg;
 	struct device *dev = core->fw.dev;
 	void __iomem *wrapper_base = core->wrapper_base;
+	void __iomem *wrapper_tz_base = core->wrapper_tz_base;
 
+	if (IS_V6(core)) {
+		reg = readl_relaxed(wrapper_tz_base + WRAPPER_TZ_XTSS_SW_RESET);
+		reg |= WRAPPER_XTSS_SW_RESET_BIT;
+		writel_relaxed(reg, wrapper_tz_base + WRAPPER_TZ_XTSS_SW_RESET);
+	} else {
 	/* Assert the reset to ARM9 */
-	reg = readl_relaxed(wrapper_base + WRAPPER_A9SS_SW_RESET);
-	reg |= WRAPPER_A9SS_SW_RESET_BIT;
-	writel_relaxed(reg, wrapper_base + WRAPPER_A9SS_SW_RESET);
-
+		reg = readl_relaxed(wrapper_base + WRAPPER_A9SS_SW_RESET);
+		reg |= WRAPPER_A9SS_SW_RESET_BIT;
+		writel_relaxed(reg, wrapper_base + WRAPPER_A9SS_SW_RESET);
+	}
 	/* Make sure reset is asserted before the mapping is removed */
 	mb();
 
diff --git a/drivers/media/platform/qcom/venus/hfi_venus_io.h b/drivers/media/platform/qcom/venus/hfi_venus_io.h
index 300c6e47..9735a24 100644
--- a/drivers/media/platform/qcom/venus/hfi_venus_io.h
+++ b/drivers/media/platform/qcom/venus/hfi_venus_io.h
@@ -149,6 +149,8 @@
 /* Wrapper TZ 6xx */
 #define WRAPPER_TZ_BASE_V6			0x000c0000
 #define WRAPPER_TZ_CPU_STATUS_V6		0x10
+#define WRAPPER_TZ_XTSS_SW_RESET		0x1000
+#define WRAPPER_XTSS_SW_RESET_BIT		BIT(0)
 
 /* Venus AON */
 #define AON_BASE_V6				0x000e0000
-- 
2.7.4