gpu: nvgpu: Abstract PCI header usage

The mclk code for gp106 requires access to the PCI device
ID headers in Linux. This patch makes it so that the mclk
code does not need to directly include the Linux headers.

This allows us to compile and link the dGPU chips code in
the user space unit testing framework.

JIRA NVGPU-525

Change-Id: I89e2fa7fbb3b67f061e026e48a374951e7934aa5
Signed-off-by: Alex Waterman <alexw@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1673823
Reviewed-by: svc-mobile-coverity <svc-mobile-coverity@nvidia.com>
GVS: Gerrit_Virtual_Submit
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>

drivers/gpu/nvgpu/gp106/mclk_gp106.c

@@ -20,8 +20,7 @@
  * DEALINGS IN THE SOFTWARE.
  */
 
-#include <linux/pci_ids.h>
-
+#include <nvgpu/pci.h>
 #include <nvgpu/bios.h>
 #include <nvgpu/kmem.h>
 #include <nvgpu/timers.h>

drivers/gpu/nvgpu/include/nvgpu/pci.h

@@ -0,0 +1,39 @@
+/*
+ * Copyright (c) 2018, NVIDIA CORPORATION.  All rights reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ */
+
+#ifndef __NVGPU_PCI_H__
+#define __NVGPU_PCI_H__
+
+#ifdef __KERNEL__
+#include <linux/pci_ids.h>
+#elif defined(__NVGPU_POSIX__)
+#include <nvgpu/posix/pci.h>
+#else
+/*
+ * In case someone tries to use this without implementing support! QNX currently
+ * does it's own thing with regard to PCI so they don't need this, but just in
+ * case they accidentally include this.
+ */
+#error "Build bug: need PCI headers!"
+#endif
+
+#endif

drivers/gpu/nvgpu/include/nvgpu/posix/pci.h

@@ -0,0 +1,28 @@
+/*
+ * Copyright (c) 2018, NVIDIA CORPORATION.  All rights reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ */
+
+#ifndef __NVGPU_POSIX_PCI_H__
+#define __NVGPU_POSIX_PCI_H__
+
+#define PCI_VENDOR_ID_NVIDIA		0x10de
+
+#endif