> -----Original Message----- > From: amd-gfx [mailto:amd-gfx-bounces at lists.freedesktop.org] On Behalf > Of Kent Russell > Sent: Thursday, August 24, 2017 10:10 AM > To: amd-gfx at lists.freedesktop.org > Cc: Russell, Kent > Subject: [PATCH v2] drm/amdgpu: Add debugfs file for VBIOS and version > > Add 2 debugfs files, one that contains the VBIOS version, and one that > contains the VBIOS itself. These won't change after initialization, > so we can add the VBIOS version when we parse the atombios information. > > This ensures that we can find out the VBIOS version, even when the dmesg > buffer fills up, and makes it easier to associate which VBIOS version is > for which GPU on mGPU configurations. Set the size to 20 characters in > case of some weird VBIOS version that exceeds the expected 17 character > format (3-8-3\0). The VBIOS dump also allows for easy debugging > > v2: Move to debugfs, clarify commit message, add VBIOS dump file > > Signed-off-by: Kent Russell <kent.russell at amd.com> Reviewed-by: Alex Deucher <alexander.deucher at amd.com> > --- > drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 62 > ++++++++++++++++++++++++++++++ > drivers/gpu/drm/amd/amdgpu/atom.c | 5 ++- > drivers/gpu/drm/amd/amdgpu/atom.h | 1 + > 3 files changed, 67 insertions(+), 1 deletion(-) > > diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c > b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c > index eb1315a..c041496 100644 > --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c > +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c > @@ -66,6 +66,8 @@ MODULE_FIRMWARE("amdgpu/raven_gpu_info.bin"); > static int amdgpu_debugfs_regs_init(struct amdgpu_device *adev); > static void amdgpu_debugfs_regs_cleanup(struct amdgpu_device *adev); > static int amdgpu_debugfs_test_ib_ring_init(struct amdgpu_device *adev); > +static int amdgpu_debugfs_vbios_dump_init(struct amdgpu_device > *adev); > +static int amdgpu_debugfs_vbios_version_init(struct amdgpu_device > *adev); > > static const char *amdgpu_asic_name[] = { > "TAHITI", > @@ -2250,6 +2252,14 @@ int amdgpu_device_init(struct amdgpu_device > *adev, > if (r) > DRM_ERROR("registering firmware debugfs failed (%d).\n", > r); > > + r = amdgpu_debugfs_vbios_dump_init(adev); > + if (r) > + DRM_ERROR("Creating vbios dump debugfs failed (%d).\n", > r); > + > + r = amdgpu_debugfs_vbios_version_init(adev); > + if (r) > + DRM_ERROR("Creating vbios version debugfs failed (%d).\n", > r); > + > if ((amdgpu_testing & 1)) { > if (adev->accel_working) > amdgpu_test_moves(adev); > @@ -3830,6 +3840,50 @@ int amdgpu_debugfs_init(struct drm_minor > *minor) > { > return 0; > } > + > +static int amdgpu_debugfs_get_vbios_dump(struct seq_file *m, void > *data) > +{ > + struct drm_info_node *node = (struct drm_info_node *) m- > >private; > + struct drm_device *dev = node->minor->dev; > + struct amdgpu_device *adev = dev->dev_private; > + > + seq_write(m, adev->bios, adev->bios_size); > + return 0; > +} > + > +static int amdgpu_debugfs_get_vbios_version(struct seq_file *m, void > *data) > +{ > + struct drm_info_node *node = (struct drm_info_node *) m- > >private; > + struct drm_device *dev = node->minor->dev; > + struct amdgpu_device *adev = dev->dev_private; > + struct atom_context *ctx = adev->mode_info.atom_context; > + > + seq_printf(m, "%s\n", ctx->vbios_version); > + return 0; > +} > + > +static const struct drm_info_list amdgpu_vbios_dump_list[] = { > + {"amdgpu_vbios", > + amdgpu_debugfs_get_vbios_dump, > + 0, NULL}, > +}; > + > +static const struct drm_info_list amdgpu_vbios_version_list[] = { > + {"amdgpu_vbios_version", > + amdgpu_debugfs_get_vbios_version, > + 0, NULL}, > +}; > + > +static int amdgpu_debugfs_vbios_dump_init(struct amdgpu_device *adev) > +{ > + return amdgpu_debugfs_add_files(adev, > + amdgpu_vbios_dump_list, 1); > +} > +static int amdgpu_debugfs_vbios_version_init(struct amdgpu_device > *adev) > +{ > + return amdgpu_debugfs_add_files(adev, > + amdgpu_vbios_version_list, 1); > +} > #else > static int amdgpu_debugfs_test_ib_ring_init(struct amdgpu_device *adev) > { > @@ -3839,5 +3893,13 @@ static int amdgpu_debugfs_regs_init(struct > amdgpu_device *adev) > { > return 0; > } > +static int amdgpu_debugfs_vbios_dump_init(struct amdgpu_device *adev) > +{ > + return 0; > +} > +static int amdgpu_debugfs_vbios_version_init(struct amdgpu_device > *adev) > +{ > + return 0; > +} > static void amdgpu_debugfs_regs_cleanup(struct amdgpu_device *adev) { } > #endif > diff --git a/drivers/gpu/drm/amd/amdgpu/atom.c > b/drivers/gpu/drm/amd/amdgpu/atom.c > index d69aa2e..69500a8 100644 > --- a/drivers/gpu/drm/amd/amdgpu/atom.c > +++ b/drivers/gpu/drm/amd/amdgpu/atom.c > @@ -1343,8 +1343,11 @@ struct atom_context *amdgpu_atom_parse(struct > card_info *card, void *bios) > idx = 0x80; > > str = CSTR(idx); > - if (*str != '\0') > + if (*str != '\0') { > pr_info("ATOM BIOS: %s\n", str); > + strlcpy(ctx->vbios_version, str, sizeof(ctx->vbios_version)); > + } > + > > return ctx; > } > diff --git a/drivers/gpu/drm/amd/amdgpu/atom.h > b/drivers/gpu/drm/amd/amdgpu/atom.h > index ddd8045..a391709 100644 > --- a/drivers/gpu/drm/amd/amdgpu/atom.h > +++ b/drivers/gpu/drm/amd/amdgpu/atom.h > @@ -140,6 +140,7 @@ struct atom_context { > int io_mode; > uint32_t *scratch; > int scratch_size_bytes; > + char vbios_version[20]; > }; > > extern int amdgpu_atom_debug; > -- > 2.7.4 > > _______________________________________________ > amd-gfx mailing list > amd-gfx at lists.freedesktop.org > https://lists.freedesktop.org/mailman/listinfo/amd-gfx
