This is a note to let you know that I've just added the patch titled
platform/x86/intel: vsec: Explicitly enable capabilities
to the 6.3-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
platform-x86-intel-vsec-explicitly-enable-capabiliti.patch
and it can be found in the queue-6.3 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit ca36bf7650869a825c93a43b3005948c081e3e72
Author: David E. Box <david.e.box@xxxxxxxxxxxxxxx>
Date: Thu Mar 16 15:46:28 2023 -0700
platform/x86/intel: vsec: Explicitly enable capabilities
[ Upstream commit 3f95ecf2a3e4db09e58d307932037e8f1210d6e7 ]
Discovered Intel VSEC/DVSEC capabilities are enabled by default and only
get disabled by quirk. Instead, remove such quirks and only enable support
for capabilities that have been explicitly added to a new capabilities
field. While here, also reorder the device info structures alphabetically.
Signed-off-by: David E. Box <david.e.box@xxxxxxxxxxxxxxx>
Reviewed-by: Andy Shevchenko <andy.shevchenko@xxxxxxxxx>
Link: https://lore.kernel.org/r/20230316224628.2855884-1-david.e.box@xxxxxxxxxxxxxxx
Reviewed-by: Hans de Goede <hdegoede@xxxxxxxxxx>
Signed-off-by: Hans de Goede <hdegoede@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/platform/x86/intel/vsec.c b/drivers/platform/x86/intel/vsec.c
index 2311c16cb975d..91be391bba3f7 100644
--- a/drivers/platform/x86/intel/vsec.c
+++ b/drivers/platform/x86/intel/vsec.c
@@ -67,14 +67,6 @@ enum intel_vsec_id {
VSEC_ID_TPMI = 66,
};
-static enum intel_vsec_id intel_vsec_allow_list[] = {
- VSEC_ID_TELEMETRY,
- VSEC_ID_WATCHER,
- VSEC_ID_CRASHLOG,
- VSEC_ID_SDSI,
- VSEC_ID_TPMI,
-};
-
static const char *intel_vsec_name(enum intel_vsec_id id)
{
switch (id) {
@@ -98,26 +90,19 @@ static const char *intel_vsec_name(enum intel_vsec_id id)
}
}
-static bool intel_vsec_allowed(u16 id)
-{
- int i;
-
- for (i = 0; i < ARRAY_SIZE(intel_vsec_allow_list); i++)
- if (intel_vsec_allow_list[i] == id)
- return true;
-
- return false;
-}
-
-static bool intel_vsec_disabled(u16 id, unsigned long quirks)
+static bool intel_vsec_supported(u16 id, unsigned long caps)
{
switch (id) {
+ case VSEC_ID_TELEMETRY:
+ return !!(caps & VSEC_CAP_TELEMETRY);
case VSEC_ID_WATCHER:
- return !!(quirks & VSEC_QUIRK_NO_WATCHER);
-
+ return !!(caps & VSEC_CAP_WATCHER);
case VSEC_ID_CRASHLOG:
- return !!(quirks & VSEC_QUIRK_NO_CRASHLOG);
-
+ return !!(caps & VSEC_CAP_CRASHLOG);
+ case VSEC_ID_SDSI:
+ return !!(caps & VSEC_CAP_SDSI);
+ case VSEC_ID_TPMI:
+ return !!(caps & VSEC_CAP_TPMI);
default:
return false;
}
@@ -206,7 +191,7 @@ static int intel_vsec_add_dev(struct pci_dev *pdev, struct intel_vsec_header *he
unsigned long quirks = info->quirks;
int i;
- if (!intel_vsec_allowed(header->id) || intel_vsec_disabled(header->id, quirks))
+ if (!intel_vsec_supported(header->id, info->caps))
return -EINVAL;
if (!header->num_entries) {
@@ -261,14 +246,14 @@ static int intel_vsec_add_dev(struct pci_dev *pdev, struct intel_vsec_header *he
static bool intel_vsec_walk_header(struct pci_dev *pdev,
struct intel_vsec_platform_info *info)
{
- struct intel_vsec_header **header = info->capabilities;
+ struct intel_vsec_header **header = info->headers;
bool have_devices = false;
int ret;
for ( ; *header; header++) {
ret = intel_vsec_add_dev(pdev, *header, info);
if (ret)
- dev_info(&pdev->dev, "Could not add device for DVSEC id %d\n",
+ dev_info(&pdev->dev, "Could not add device for VSEC id %d\n",
(*header)->id);
else
have_devices = true;
@@ -403,14 +388,8 @@ static int intel_vsec_pci_probe(struct pci_dev *pdev, const struct pci_device_id
return 0;
}
-/* TGL info */
-static const struct intel_vsec_platform_info tgl_info = {
- .quirks = VSEC_QUIRK_NO_WATCHER | VSEC_QUIRK_NO_CRASHLOG |
- VSEC_QUIRK_TABLE_SHIFT | VSEC_QUIRK_EARLY_HW,
-};
-
/* DG1 info */
-static struct intel_vsec_header dg1_telemetry = {
+static struct intel_vsec_header dg1_header = {
.length = 0x10,
.id = 2,
.num_entries = 1,
@@ -419,19 +398,31 @@ static struct intel_vsec_header dg1_telemetry = {
.offset = 0x466000,
};
-static struct intel_vsec_header *dg1_capabilities[] = {
- &dg1_telemetry,
+static struct intel_vsec_header *dg1_headers[] = {
+ &dg1_header,
NULL
};
static const struct intel_vsec_platform_info dg1_info = {
- .capabilities = dg1_capabilities,
+ .caps = VSEC_CAP_TELEMETRY,
+ .headers = dg1_headers,
.quirks = VSEC_QUIRK_NO_DVSEC | VSEC_QUIRK_EARLY_HW,
};
/* MTL info */
static const struct intel_vsec_platform_info mtl_info = {
- .quirks = VSEC_QUIRK_NO_WATCHER | VSEC_QUIRK_NO_CRASHLOG,
+ .caps = VSEC_CAP_TELEMETRY,
+};
+
+/* OOBMSM info */
+static const struct intel_vsec_platform_info oobmsm_info = {
+ .caps = VSEC_CAP_TELEMETRY | VSEC_CAP_SDSI | VSEC_CAP_TPMI,
+};
+
+/* TGL info */
+static const struct intel_vsec_platform_info tgl_info = {
+ .caps = VSEC_CAP_TELEMETRY,
+ .quirks = VSEC_QUIRK_TABLE_SHIFT | VSEC_QUIRK_EARLY_HW,
};
#define PCI_DEVICE_ID_INTEL_VSEC_ADL 0x467d
@@ -446,7 +437,7 @@ static const struct pci_device_id intel_vsec_pci_ids[] = {
{ PCI_DEVICE_DATA(INTEL, VSEC_DG1, &dg1_info) },
{ PCI_DEVICE_DATA(INTEL, VSEC_MTL_M, &mtl_info) },
{ PCI_DEVICE_DATA(INTEL, VSEC_MTL_S, &mtl_info) },
- { PCI_DEVICE_DATA(INTEL, VSEC_OOBMSM, &(struct intel_vsec_platform_info) {}) },
+ { PCI_DEVICE_DATA(INTEL, VSEC_OOBMSM, &oobmsm_info) },
{ PCI_DEVICE_DATA(INTEL, VSEC_RPL, &tgl_info) },
{ PCI_DEVICE_DATA(INTEL, VSEC_TGL, &tgl_info) },
{ }
diff --git a/drivers/platform/x86/intel/vsec.h b/drivers/platform/x86/intel/vsec.h
index ae8fe92c5595b..0fd042c171ba0 100644
--- a/drivers/platform/x86/intel/vsec.h
+++ b/drivers/platform/x86/intel/vsec.h
@@ -5,6 +5,12 @@
#include <linux/auxiliary_bus.h>
#include <linux/bits.h>
+#define VSEC_CAP_TELEMETRY BIT(0)
+#define VSEC_CAP_WATCHER BIT(1)
+#define VSEC_CAP_CRASHLOG BIT(2)
+#define VSEC_CAP_SDSI BIT(3)
+#define VSEC_CAP_TPMI BIT(4)
+
struct pci_dev;
struct resource;
@@ -27,7 +33,8 @@ enum intel_vsec_quirks {
/* Platform specific data */
struct intel_vsec_platform_info {
- struct intel_vsec_header **capabilities;
+ struct intel_vsec_header **headers;
+ unsigned long caps;
unsigned long quirks;
};
