[PATCH 13/14] accel/ivpu: Add platform detection for presilicon

[Maciej Falkowski]

From: Karol Wachowski <karol.wachowski at intel.com>

Use highest buttress VPU_STATUS register bits(15:13) that encode
platform type as follows:
	0 - Silicon
	2 - Simics
	3 - FPGA
	4 - Hybrid SLE

Remove old DMI based method.

Signed-off-by: Karol Wachowski <karol.wachowski at intel.com>
Signed-off-by: Maciej Falkowski <maciej.falkowski at linux.intel.com>
---
 drivers/accel/ivpu/ivpu_drv.h             |  4 ++-
 drivers/accel/ivpu/ivpu_hw.c              | 41 ++++++++++-------------
 drivers/accel/ivpu/ivpu_hw_btrs.c         |  7 ++++
 drivers/accel/ivpu/ivpu_hw_btrs.h         |  1 +
 drivers/accel/ivpu/ivpu_hw_btrs_lnl_reg.h |  1 +
 5 files changed, 29 insertions(+), 25 deletions(-)

diff --git a/drivers/accel/ivpu/ivpu_drv.h b/drivers/accel/ivpu/ivpu_drv.h
index d53902b34070..ca21102ca366 100644
--- a/drivers/accel/ivpu/ivpu_drv.h
+++ b/drivers/accel/ivpu/ivpu_drv.h
@@ -58,6 +58,7 @@
 #define IVPU_PLATFORM_SILICON 0
 #define IVPU_PLATFORM_SIMICS  2
 #define IVPU_PLATFORM_FPGA    3
+#define IVPU_PLATFORM_HSLE    4
 #define IVPU_PLATFORM_INVALID 8
 
 #define IVPU_SCHED_MODE_AUTO -1
@@ -288,7 +289,8 @@ static inline bool ivpu_is_simics(struct ivpu_device *vdev)
 
 static inline bool ivpu_is_fpga(struct ivpu_device *vdev)
 {
-	return ivpu_get_platform(vdev) == IVPU_PLATFORM_FPGA;
+	return ivpu_get_platform(vdev) == IVPU_PLATFORM_FPGA ||
+	       ivpu_get_platform(vdev) == IVPU_PLATFORM_HSLE;
 }
 
 static inline bool ivpu_is_force_snoop_enabled(struct ivpu_device *vdev)
diff --git a/drivers/accel/ivpu/ivpu_hw.c b/drivers/accel/ivpu/ivpu_hw.c
index 1b691375ee4d..e332f19ab51d 100644
--- a/drivers/accel/ivpu/ivpu_hw.c
+++ b/drivers/accel/ivpu/ivpu_hw.c
@@ -19,38 +19,31 @@ static char *platform_to_str(u32 platform)
 		return "SIMICS";
 	case IVPU_PLATFORM_FPGA:
 		return "FPGA";
+	case IVPU_PLATFORM_HSLE:
+		return "HSLE";
 	default:
 		return "Invalid platform";
 	}
 }
 
-static const struct dmi_system_id dmi_platform_simulation[] = {
-	{
-		.ident = "Intel Simics",
-		.matches = {
-			DMI_MATCH(DMI_BOARD_NAME, "lnlrvp"),
-			DMI_MATCH(DMI_BOARD_VERSION, "1.0"),
-			DMI_MATCH(DMI_BOARD_SERIAL, "123456789"),
-		},
-	},
-	{
-		.ident = "Intel Simics",
-		.matches = {
-			DMI_MATCH(DMI_BOARD_NAME, "Simics"),
-		},
-	},
-	{ }
-};
-
 static void platform_init(struct ivpu_device *vdev)
 {
-	if (dmi_check_system(dmi_platform_simulation))
-		vdev->platform = IVPU_PLATFORM_SIMICS;
-	else
-		vdev->platform = IVPU_PLATFORM_SILICON;
+	int platform = ivpu_hw_btrs_platform_read(vdev);
+
+	ivpu_dbg(vdev, MISC, "Platform type: %s (%d)\n", platform_to_str(platform), platform);
+
+	switch (platform) {
+	case IVPU_PLATFORM_SILICON:
+	case IVPU_PLATFORM_SIMICS:
+	case IVPU_PLATFORM_FPGA:
+	case IVPU_PLATFORM_HSLE:
+		vdev->platform = platform;
+		break;
 
-	ivpu_dbg(vdev, MISC, "Platform type: %s (%d)\n",
-		 platform_to_str(vdev->platform), vdev->platform);
+	default:
+		ivpu_err(vdev, "Invalid platform type: %d\n", platform);
+		break;
+	}
 }
 
 static void wa_init(struct ivpu_device *vdev)
diff --git a/drivers/accel/ivpu/ivpu_hw_btrs.c b/drivers/accel/ivpu/ivpu_hw_btrs.c
index 3753b00ed2d6..56c56012b980 100644
--- a/drivers/accel/ivpu/ivpu_hw_btrs.c
+++ b/drivers/accel/ivpu/ivpu_hw_btrs.c
@@ -887,3 +887,10 @@ void ivpu_hw_btrs_diagnose_failure(struct ivpu_device *vdev)
 	else
 		return diagnose_failure_lnl(vdev);
 }
+
+int ivpu_hw_btrs_platform_read(struct ivpu_device *vdev)
+{
+	u32 reg = REGB_RD32(VPU_HW_BTRS_LNL_VPU_STATUS);
+
+	return REG_GET_FLD(VPU_HW_BTRS_LNL_VPU_STATUS, PLATFORM, reg);
+}
diff --git a/drivers/accel/ivpu/ivpu_hw_btrs.h b/drivers/accel/ivpu/ivpu_hw_btrs.h
index 04f14f50fed6..1fd71b4d4ab0 100644
--- a/drivers/accel/ivpu/ivpu_hw_btrs.h
+++ b/drivers/accel/ivpu/ivpu_hw_btrs.h
@@ -46,5 +46,6 @@ void ivpu_hw_btrs_global_int_disable(struct ivpu_device *vdev);
 void ivpu_hw_btrs_irq_enable(struct ivpu_device *vdev);
 void ivpu_hw_btrs_irq_disable(struct ivpu_device *vdev);
 void ivpu_hw_btrs_diagnose_failure(struct ivpu_device *vdev);
+int ivpu_hw_btrs_platform_read(struct ivpu_device *vdev);
 
 #endif /* __IVPU_HW_BTRS_H__ */
diff --git a/drivers/accel/ivpu/ivpu_hw_btrs_lnl_reg.h b/drivers/accel/ivpu/ivpu_hw_btrs_lnl_reg.h
index fc51f3098f97..fff2ef2cada6 100644
--- a/drivers/accel/ivpu/ivpu_hw_btrs_lnl_reg.h
+++ b/drivers/accel/ivpu/ivpu_hw_btrs_lnl_reg.h
@@ -86,6 +86,7 @@
 #define VPU_HW_BTRS_LNL_VPU_STATUS_POWER_RESOURCE_OWN_ACK_MASK	BIT_MASK(7)
 #define VPU_HW_BTRS_LNL_VPU_STATUS_PERF_CLK_MASK		BIT_MASK(11)
 #define VPU_HW_BTRS_LNL_VPU_STATUS_DISABLE_CLK_RELINQUISH_MASK  BIT_MASK(12)
+#define VPU_HW_BTRS_LNL_VPU_STATUS_PLATFORM_MASK		GENMASK(31, 29)
 
 #define VPU_HW_BTRS_LNL_IP_RESET				0x00000160u
 #define VPU_HW_BTRS_LNL_IP_RESET_TRIGGER_MASK			BIT_MASK(0)
-- 
2.43.0