From c967b38c7c6fde4188f938c7cef4ebe2180a6815 Mon Sep 17 00:00:00 2001
From: Jordan Justen <jordan.l.justen@intel.com>
Date: Thu, 28 Sep 2023 02:23:47 -0700
Subject: [PATCH] intel/dev: Allow setting FORCE_PROBE for intel PCI IDs
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For example:

CHIPSET(0x56a0, dg2_g10, "DG2", "Intel(R) Arc(tm) A770 Graphics", FORCE_PROBE)

For now if a PCI ID has FORCE_PROBE set, then we refuse to start the
device.

Signed-off-by: Jordan Justen <jordan.l.justen@intel.com>
Reviewed-by: José Roberto de Souza <jose.souza@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/29273>
---
 src/intel/dev/intel_device_info.c      | 23 ++++++++++++++++++++---
 src/intel/dev/intel_device_info_test.c |  2 +-
 2 files changed, 21 insertions(+), 4 deletions(-)

diff --git a/src/intel/dev/intel_device_info.c b/src/intel/dev/intel_device_info.c
index 97b1b7b6269..a54f52e5494 100644
--- a/src/intel/dev/intel_device_info.c
+++ b/src/intel/dev/intel_device_info.c
@@ -1333,14 +1333,28 @@ intel_device_info_update_cs_workgroup_threads(struct intel_device_info *devinfo)
                                MIN2(devinfo->max_cs_threads, 64);
 }
 
+struct device_init_config {
+   bool require_force_probe;
+};
+
+/* Example PCI ID entry using FORCE_PROBE:
+ *
+ * CHIPSET(0x1234, foo, "FOO", "Intel(R) Graphics", FORCE_PROBE)
+ */
+#define FORCE_PROBE .require_force_probe = true
+
 static bool
 intel_device_info_init_common(int pci_id,
                               struct intel_device_info *devinfo)
 {
+   struct device_init_config device_config = { 0 };
    switch (pci_id) {
 #undef CHIPSET
-#define CHIPSET(id, family, fam_str, name) \
-      case id: *devinfo = intel_device_info_##family; break;
+#define CHIPSET(id, family, fam_str, name, ...)                         \
+      case id:                                                          \
+         *devinfo = intel_device_info_##family;                         \
+         device_config = *&(struct device_init_config) { __VA_ARGS__ }; \
+         break;
 #include "pci_ids/crocus_pci_ids.h"
 #include "pci_ids/iris_pci_ids.h"
 
@@ -1356,7 +1370,7 @@ intel_device_info_init_common(int pci_id,
 
    switch (pci_id) {
 #undef CHIPSET
-#define CHIPSET(_id, _family, _fam_str, _name) \
+#define CHIPSET(_id, _family, _fam_str, _name, ...) \
    case _id: \
       /* sizeof(str_literal) includes the null */ \
       STATIC_ASSERT(sizeof(_name) + sizeof(_fam_str) + 2 <= \
@@ -1369,6 +1383,9 @@ intel_device_info_init_common(int pci_id,
       strncpy(devinfo->name, "Intel Unknown", sizeof(devinfo->name));
    }
 
+   if (device_config.require_force_probe)
+      return false;
+
    devinfo->pci_device_id = pci_id;
 
    fill_masks(devinfo);
diff --git a/src/intel/dev/intel_device_info_test.c b/src/intel/dev/intel_device_info_test.c
index b392833d341..796a3985d3c 100644
--- a/src/intel/dev/intel_device_info_test.c
+++ b/src/intel/dev/intel_device_info_test.c
@@ -14,7 +14,7 @@ main(int argc, char *argv[])
       const char *name;
    } chipsets[] = {
 #undef CHIPSET
-#define CHIPSET(id, family, family_str, str_name) { .pci_id = id, .name = str_name, },
+#define CHIPSET(id, family, family_str, str_name, ...) { .pci_id = id, .name = str_name, },
 #include "pci_ids/iris_pci_ids.h"
 #include "pci_ids/crocus_pci_ids.h"
    };