• attachment:01-amdgpu_20.40_on_linux_4.19-v3.patch of AMDGPUDriverOnStretchAndBuster2

   1 From 72e0ef0e5f067fd991f702f0b2635d911d0cf208 Mon Sep 17 00:00:00 2001
   2 From: Mikel Rychliski <mikel@mikelr.com>
   3 Date: Wed, 18 Mar 2020 22:16:23 -0400
   4 Subject: PCI: Use ioremap(), not phys_to_virt() for platform ROM
   5 https://cgit.freedesktop.org/~agd5f/linux/patch/?id=72e0ef0e5f067fd991f702f0b2635d911d0cf208
   6 Usage: "cd /usr/src/amdgpu-5.6.20.906300-1164792 && patch -p1 < this.patch"
   7 
   8 --- old/amd/amdgpu/amdgpu_bios.c	2020-10-22 09:53:01.000000000 +0200
   9 +++ new/amd/amdgpu/amdgpu_bios.c	2020-12-06 15:18:55.702641677 +0100
  10 @@ -192,6 +192,37 @@
  11  
  12  static bool amdgpu_read_platform_bios(struct amdgpu_device *adev)
  13  {
  14 +#if ( LINUX_VERSION_CODE >= KERNEL_VERSION(4, 19, 149) && LINUX_VERSION_CODE < KERNEL_VERSION(4, 20, 0) ) || ( LINUX_VERSION_CODE >= KERNEL_VERSION(5, 4, 69) && LINUX_VERSION_CODE < KERNEL_VERSION(5, 5, 0) ) || ( LINUX_VERSION_CODE >= KERNEL_VERSION(5, 7, 0) )
  15 +	phys_addr_t rom = adev->pdev->rom;
  16 +	size_t romlen = adev->pdev->romlen;
  17 +	void __iomem *bios;
  18 +
  19 +	adev->bios = NULL;
  20 +
  21 +	if (!rom || romlen == 0)
  22 +		return false;
  23 +
  24 +	adev->bios = kzalloc(romlen, GFP_KERNEL);
  25 +	if (!adev->bios)
  26 +		return false;
  27 +
  28 +	bios = ioremap(rom, romlen);
  29 +	if (!bios)
  30 +		goto free_bios;
  31 +
  32 +	memcpy_fromio(adev->bios, bios, romlen);
  33 +	iounmap(bios);
  34 +
  35 +	if (!check_atom_bios(adev->bios, romlen))
  36 +		goto free_bios;
  37 +
  38 +	adev->bios_size = romlen;
  39 +
  40 +	return true;
  41 +free_bios:
  42 +	kfree(adev->bios);
  43 +	return false;
  44 +#else
  45  	uint8_t __iomem *bios;
  46  	size_t size;
  47  
  48 @@ -216,6 +247,7 @@
  49  	adev->bios_size = size;
  50  
  51  	return true;
  52 +#endif
  53  }
  54  
  55  #ifdef CONFIG_ACPI