Merge tag 'drm-habanalabs-next-2023-12-19' of https://git.kernel.org/pub/scm/linux/kernel/git/ogabbay/linux into drm-next

This tag contains habanalabs driver changes for v6.8.

The notable changes are:

- uAPI changes:
  - Add sysfs entry to allow users to identify a device minor id with its
    debugfs path
  - Add sysfs entry to expose the device's module id as given to us from
    the f/w
  - Add signed device information retrieval through the INFO ioctl

- New features and improvements:
  - Update documentation of debugfs paths
  - Add support for Gaudi2C device (new PCI revision number)
  - Add pcie reset prepare/done hooks

- Firmware related fixes and changes:
  - Print three instances version numbers of Infineon second stage
  - Assume hard-reset is done by f/w upon PCIe AXI drain

- Bug fixes and code cleanups:
  - Fix information leak in sec_attest_info()
  - Avoid overriding existing undefined opcode data in Gaudi2
  - Multiple Queue Manager (QMAN) fixes for Gaudi2
  - Set hard reset flag if graceful reset is skipped
  - Remove 'get temperature' debug print
  - Fix the new Event Queue heartbeat mechanism

Signed-off-by: Dave Airlie <airlied@redhat.com>

From: Oded Gabbay <ogabbay@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/ZYFpihZscr/fsRRd@ogabbay-vm-u22.habana-labs.com

1 files changed, 40 insertions, 2 deletions

diff --git a/drivers/accel/habanalabs/common/sysfs.c b/drivers/accel/habanalabs/common/sysfs.c
index 01f89f029355..8a9f98832157 100644
--- a/drivers/accel/habanalabs/common/sysfs.c
+++ b/drivers/accel/habanalabs/common/sysfs.c
@@ -8,6 +8,7 @@
 #include "habanalabs.h"
 
 #include <linux/pci.h>
+#include <linux/types.h>
 
 static ssize_t clk_max_freq_mhz_show(struct device *dev, struct device_attribute *attr, char *buf)
 {
@@ -80,12 +81,27 @@ static ssize_t vrm_ver_show(struct device *dev, struct device_attribute *attr, c
 {
 	struct hl_device *hdev = dev_get_drvdata(dev);
 	struct cpucp_info *cpucp_info;
+	u32 infineon_second_stage_version;
+	u32 infineon_second_stage_first_instance;
+	u32 infineon_second_stage_second_instance;
+	u32 infineon_second_stage_third_instance;
+	u32 mask = 0xff;
 
 	cpucp_info = &hdev->asic_prop.cpucp_info;
 
+	infineon_second_stage_version = le32_to_cpu(cpucp_info->infineon_second_stage_version);
+	infineon_second_stage_first_instance = infineon_second_stage_version & mask;
+	infineon_second_stage_second_instance =
+					(infineon_second_stage_version >> 8) & mask;
+	infineon_second_stage_third_instance =
+					(infineon_second_stage_version >> 16) & mask;
+
 	if (cpucp_info->infineon_second_stage_version)
-		return sprintf(buf, "%#04x %#04x\n", le32_to_cpu(cpucp_info->infineon_version),
-				le32_to_cpu(cpucp_info->infineon_second_stage_version));
+		return sprintf(buf, "%#04x %#04x:%#04x:%#04x\n",
+				le32_to_cpu(cpucp_info->infineon_version),
+				infineon_second_stage_first_instance,
+				infineon_second_stage_second_instance,
+				infineon_second_stage_third_instance);
 	else
 		return sprintf(buf, "%#04x\n", le32_to_cpu(cpucp_info->infineon_version));
 }
@@ -251,6 +267,9 @@ static ssize_t device_type_show(struct device *dev,
 	case ASIC_GAUDI2B:
 		str = "GAUDI2B";
 		break;
+	case ASIC_GAUDI2C:
+		str = "GAUDI2C";
+		break;
 	default:
 		dev_err(hdev->dev, "Unrecognized ASIC type %d\n",
 				hdev->asic_type);
@@ -383,6 +402,21 @@ static ssize_t security_enabled_show(struct device *dev,
 	return sprintf(buf, "%d\n", hdev->asic_prop.fw_security_enabled);
 }
 
+static ssize_t module_id_show(struct device *dev,
+				struct device_attribute *attr, char *buf)
+{
+	struct hl_device *hdev = dev_get_drvdata(dev);
+
+	return sprintf(buf, "%u\n", le32_to_cpu(hdev->asic_prop.cpucp_info.card_location));
+}
+
+static ssize_t parent_device_show(struct device *dev, struct device_attribute *attr, char *buf)
+{
+	struct hl_device *hdev = dev_get_drvdata(dev);
+
+	return sprintf(buf, "%s\n", HL_DEV_NAME(hdev));
+}
+
 static DEVICE_ATTR_RO(armcp_kernel_ver);
 static DEVICE_ATTR_RO(armcp_ver);
 static DEVICE_ATTR_RO(cpld_ver);
@@ -402,6 +436,8 @@ static DEVICE_ATTR_RO(thermal_ver);
 static DEVICE_ATTR_RO(uboot_ver);
 static DEVICE_ATTR_RO(fw_os_ver);
 static DEVICE_ATTR_RO(security_enabled);
+static DEVICE_ATTR_RO(module_id);
+static DEVICE_ATTR_RO(parent_device);
 
 static struct bin_attribute bin_attr_eeprom = {
 	.attr = {.name = "eeprom", .mode = (0444)},
@@ -427,6 +463,8 @@ static struct attribute *hl_dev_attrs[] = {
 	&dev_attr_uboot_ver.attr,
 	&dev_attr_fw_os_ver.attr,
 	&dev_attr_security_enabled.attr,
+	&dev_attr_module_id.attr,
+	&dev_attr_parent_device.attr,
 	NULL,
 };