Allow correct compilation with Clang/LLVM

Signed-off-by: Marcus Köhler <khler.marcus@gmail.com>

README.md

@@ -60,6 +60,7 @@ updating your initrd.
 |AMD|Polaris 12| RX 540, 550
 |AMD|Vega 10| Vega 56/64/FE |
 |AMD|Vega 20| Radeon VII |
+|AMD|Vega 20| Instinct MI100 |
 |AMD|Navi 10| 5600XT, 5700, 5700XT
 |AMD|Navi 12| Pro 5600M |
 |AMD|Navi 14| Pro 5300, RX 5300, 5500XT

src/amd/amdgpu/atom.c

@@ -28,6 +28,7 @@
 #include <linux/sched.h>
 #include <linux/slab.h>
 #include <linux/delay.h>
+#include <linux/version.h>
 #include <asm/unaligned.h>
 
 //#include <drm/drm_util.h>
@@ -39,6 +40,10 @@
 #include "atom-names.h"
 #include "atom-bits.h"
 
+#if LINUX_VERSION_CODE < KERNEL_VERSION(4, 3, 0)
+#define strscpy strlcpy
+#endif
+
 #define ATOM_COND_ABOVE 0
 #define ATOM_COND_ABOVEOREQUAL 1
 #define ATOM_COND_ALWAYS 2
@@ -1424,7 +1429,7 @@ struct atom_context *amdgpu_atom_parse(struct card_info *card, void *bios)
 	if (*str != '\0')
 	{
 		pr_info("ATOM BIOS: %s\n", str);
-		strlcpy(ctx->vbios_version, str, sizeof(ctx->vbios_version));
+		strscpy(ctx->vbios_version, str, sizeof(ctx->vbios_version));
 	}
 
 	return ctx;

src/device-db.h

@@ -102,6 +102,9 @@ Place, Suite 330, Boston, MA 02111-1307 USA
     {PCI_VENDOR_ID_ATI, 0x7360, op, DEVICE_INFO(AMD_NAVI12)}, \
     {PCI_VENDOR_ID_ATI, 0x7362, op, DEVICE_INFO(AMD_NAVI12)}
 
+#define _AMD_ARCTURUS(op) \
+    {PCI_VENDOR_ID_ATI, 0x738c, op, DEVICE_INFO(AMD_VEGA20)} //Instinct MI100
+
 static const struct vendor_reset_cfg vendor_reset_devices[] = {
     _AMD_POLARIS10(&amd_polaris10_ops),
     _AMD_POLARIS11(&amd_polaris10_ops),
@@ -111,6 +114,7 @@ static const struct vendor_reset_cfg vendor_reset_devices[] = {
     _AMD_NAVI10(&amd_navi10_ops),
     _AMD_NAVI14(&amd_navi10_ops),
     _AMD_NAVI12(&amd_navi10_ops),
+    _AMD_ARCTURUS(&amd_vega20_ops),
 
     /* end of array guard */
     {.vendor = 0}

src/hook.c

@@ -30,7 +30,11 @@ static bool hook_installed = false;
 static int (*orig_pci_dev_specific_reset)(struct pci_dev *dev, int probe);
 
 /* TCO breaks the hook, we must disable it for this function */
+#if defined(__GNUC__) && !defined(__llvm__)
 __attribute__((optimize("-fno-optimize-sibling-calls")))
+#elif defined(__clang__)
+__attribute__((disable_tail_calls))
+#endif
 static int hooked_pci_dev_specific_reset(struct pci_dev *dev, int probe)
 {
   int ret;

udev/99-vendor-reset.rules

@@ -131,3 +131,5 @@ ACTION=="add", SUBSYSTEM=="pci", ATTR{vendor}=="0x1002", ATTR{device}=="0x734F",
 ACTION=="add", SUBSYSTEM=="pci", ATTR{vendor}=="0x1002", ATTR{device}=="0x7360", RUN+="/bin/sh -c '/sbin/modprobe vendor-reset; echo device_specific > /sys$env{DEVPATH}/reset_method'"
 
 ACTION=="add", SUBSYSTEM=="pci", ATTR{vendor}=="0x1002", ATTR{device}=="0x7362", RUN+="/bin/sh -c '/sbin/modprobe vendor-reset; echo device_specific > /sys$env{DEVPATH}/reset_method'"
+
+ACTION=="add", SUBSYSTEM=="pci", ATTR{vendor}=="0x1002", ATTR{device}=="0x738c", RUN+="/bin/sh -c '/sbin/modprobe vendor-reset; echo device_specific > /sys$env{DEVPATH}/reset_method'"