Co-incidentally, I also have a patch series along these same lines
created last night, only with all the review points already addressed.
I'll send it out momentarily.
Not quite fully tested because the VG core causes the kernel to oops
when reading /sys/kernel/debug/dri/1/gpu, but tested apart from that.
On Tue, Jan 19, 2016 at 08:05:09AM +0100, Christian Gmeiner wrote:
> The varyings count is stored as part of register VIVS_HI_CHIP_SPECS_3.
> Userspace still needs to validate the returned values as it can be 0
> like on the imx6q.
>
> Signed-off-by: Christian Gmeiner <christian.gmeiner at gmail.com>
> ---
> drivers/gpu/drm/etnaviv/etnaviv_gpu.c | 11 +++++++++-
> drivers/gpu/drm/etnaviv/etnaviv_gpu.h | 3 +++
> drivers/gpu/drm/etnaviv/state_hi.xml.h | 37
> ++++++++++++++++++++++++++++++++--
> include/uapi/drm/etnaviv_drm.h | 1 +
> 4 files changed, 49 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/gpu/drm/etnaviv/etnaviv_gpu.c
> b/drivers/gpu/drm/etnaviv/etnaviv_gpu.c
> index 056a72e..e4f6008 100644
> --- a/drivers/gpu/drm/etnaviv/etnaviv_gpu.c
> +++ b/drivers/gpu/drm/etnaviv/etnaviv_gpu.c
> @@ -112,6 +112,10 @@ int etnaviv_gpu_get_param(struct etnaviv_gpu *gpu, u32
> param, u64 *value)
> *value = gpu->identity.num_constants;
> break;
>
> + case ETNAVIV_PARAM_GPU_NUM_VARYINGS:
> + *value = gpu->identity.num_varyings;
> + break;
> +
> default:
> DBG("%s: invalid param: %u", dev_name(gpu->dev), param);
> return -EINVAL;
> @@ -124,10 +128,11 @@ static void etnaviv_hw_specs(struct etnaviv_gpu *gpu)
> {
> if (gpu->identity.minor_features0 &
> chipMinorFeatures0_MORE_MINOR_FEATURES) {
> - u32 specs[2];
> + u32 specs[3];
>
> specs[0] = gpu_read(gpu, VIVS_HI_CHIP_SPECS);
> specs[1] = gpu_read(gpu, VIVS_HI_CHIP_SPECS_2);
> + specs[2] = gpu_read(gpu, VIVS_HI_CHIP_SPECS_3);
>
> gpu->identity.stream_count =
> (specs[0] & VIVS_HI_CHIP_SPECS_STREAM_COUNT__MASK)
> @@ -160,6 +165,10 @@ static void etnaviv_hw_specs(struct etnaviv_gpu *gpu)
> gpu->identity.num_constants =
> (specs[1] & VIVS_HI_CHIP_SPECS_2_NUM_CONSTANTS__MASK)
> >> VIVS_HI_CHIP_SPECS_2_NUM_CONSTANTS__SHIFT;
> +
> + gpu->identity.num_varyings =
> + (specs[2] & VIVS_HI_CHIP_SPECS_3_VARYINGS_COUNT__MASK)
> + >> VIVS_HI_CHIP_SPECS_3_VARYINGS_COUNT__SHIFT;
> }
>
> /* Fill in the stream count if not specified */
> diff --git a/drivers/gpu/drm/etnaviv/etnaviv_gpu.h
> b/drivers/gpu/drm/etnaviv/etnaviv_gpu.h
> index c75d503..259012d 100644
> --- a/drivers/gpu/drm/etnaviv/etnaviv_gpu.h
> +++ b/drivers/gpu/drm/etnaviv/etnaviv_gpu.h
> @@ -75,6 +75,9 @@ struct etnaviv_chip_identity {
>
> /* Buffer size */
> u32 buffer_size;
> +
> + /* varyings count */
> + u32 num_varyings;
> };
>
> struct etnaviv_event {
> diff --git a/drivers/gpu/drm/etnaviv/state_hi.xml.h
> b/drivers/gpu/drm/etnaviv/state_hi.xml.h
> index 0064f26..2dc7aa2 100644
> --- a/drivers/gpu/drm/etnaviv/state_hi.xml.h
> +++ b/drivers/gpu/drm/etnaviv/state_hi.xml.h
> @@ -8,8 +8,12 @@ http://0x04.net/cgit/index.cgi/rules-ng-ng
> git clone git://0x04.net/rules-ng-ng
>
> The rules-ng-ng source files this header was generated from are:
> -- state_hi.xml ( 23420 bytes, from 2015-03-25 11:47:21)
> -- common.xml ( 18437 bytes, from 2015-03-25 11:27:41)
> +- state.xml ( 18940 bytes, from 2015-12-12 08:59:16)
> +- common.xml ( 18379 bytes, from 2014-07-14 14:44:55)
> +- state_hi.xml ( 24309 bytes, from 2015-12-12 09:02:53)
> +- state_2d.xml ( 51520 bytes, from 2015-12-12 08:59:16)
> +- state_3d.xml ( 54570 bytes, from 2014-07-14 14:44:55)
> +- state_vg.xml ( 5942 bytes, from 2014-07-14 14:44:55)
>
> Copyright (C) 2015
> */
> @@ -182,8 +186,25 @@ Copyright (C) 2015
>
> #define VIVS_HI_CHIP_MINOR_FEATURE_3 0x00000088
>
> +#define VIVS_HI_CHIP_SPECS_3 0x0000008c
> +#define VIVS_HI_CHIP_SPECS_3_VARYINGS_COUNT__MASK 0x000001f0
> +#define VIVS_HI_CHIP_SPECS_3_VARYINGS_COUNT__SHIFT 4
> +#define VIVS_HI_CHIP_SPECS_3_VARYINGS_COUNT(x) (((x)
> << VIVS_HI_CHIP_SPECS_3_VARYINGS_COUNT__SHIFT) &
> VIVS_HI_CHIP_SPECS_3_VARYINGS_COUNT__MASK)
> +#define VIVS_HI_CHIP_SPECS_3_GPU_CORE_COUNT__MASK 0x00000007
> +#define VIVS_HI_CHIP_SPECS_3_GPU_CORE_COUNT__SHIFT 0
> +#define VIVS_HI_CHIP_SPECS_3_GPU_CORE_COUNT(x) (((x)
> << VIVS_HI_CHIP_SPECS_3_GPU_CORE_COUNT__SHIFT) &
> VIVS_HI_CHIP_SPECS_3_GPU_CORE_COUNT__MASK)
> +
> #define VIVS_HI_CHIP_MINOR_FEATURE_4 0x00000094
>
> +#define VIVS_HI_CHIP_SPECS_4 0x0000009c
> +#define VIVS_HI_CHIP_SPECS_4_STREAM_COUNT__MASK
> 0x0001f000
> +#define VIVS_HI_CHIP_SPECS_4_STREAM_COUNT__SHIFT 12
> +#define VIVS_HI_CHIP_SPECS_4_STREAM_COUNT(x) (((x) <<
> VIVS_HI_CHIP_SPECS_4_STREAM_COUNT__SHIFT) &
> VIVS_HI_CHIP_SPECS_4_STREAM_COUNT__MASK)
> +
> +#define VIVS_HI_CHIP_MINOR_FEATURE_5 0x000000a0
> +
> +#define VIVS_HI_CHIP_PRODUCT_ID
> 0x000000a8
> +
> #define VIVS_PM
> 0x00000000
>
> #define VIVS_PM_POWER_CONTROLS
> 0x00000100
> @@ -201,11 +222,23 @@ Copyright (C) 2015
> #define VIVS_PM_MODULE_CONTROLS_DISABLE_MODULE_CLOCK_GATING_FE
> 0x00000001
> #define VIVS_PM_MODULE_CONTROLS_DISABLE_MODULE_CLOCK_GATING_DE
> 0x00000002
> #define VIVS_PM_MODULE_CONTROLS_DISABLE_MODULE_CLOCK_GATING_PE
> 0x00000004
> +#define VIVS_PM_MODULE_CONTROLS_DISABLE_MODULE_CLOCK_GATING_SH
> 0x00000008
> +#define VIVS_PM_MODULE_CONTROLS_DISABLE_MODULE_CLOCK_GATING_PA
> 0x00000010
> +#define VIVS_PM_MODULE_CONTROLS_DISABLE_MODULE_CLOCK_GATING_SE
> 0x00000020
> +#define VIVS_PM_MODULE_CONTROLS_DISABLE_MODULE_CLOCK_GATING_RA
> 0x00000040
> +#define VIVS_PM_MODULE_CONTROLS_DISABLE_MODULE_CLOCK_GATING_TX
> 0x00000080
> +#define VIVS_PM_MODULE_CONTROLS_DISABLE_MODULE_CLOCK_GATING_RA_EZ
> 0x00010000
> +#define VIVS_PM_MODULE_CONTROLS_DISABLE_MODULE_CLOCK_GATING_RA_HZ
> 0x00020000
>
> #define VIVS_PM_MODULE_STATUS
> 0x00000108
> #define VIVS_PM_MODULE_STATUS_MODULE_CLOCK_GATED_FE 0x00000001
> #define VIVS_PM_MODULE_STATUS_MODULE_CLOCK_GATED_DE 0x00000002
> #define VIVS_PM_MODULE_STATUS_MODULE_CLOCK_GATED_PE 0x00000004
> +#define VIVS_PM_MODULE_STATUS_MODULE_CLOCK_GATED_SH 0x00000008
> +#define VIVS_PM_MODULE_STATUS_MODULE_CLOCK_GATED_PA 0x00000010
> +#define VIVS_PM_MODULE_STATUS_MODULE_CLOCK_GATED_SE 0x00000020
> +#define VIVS_PM_MODULE_STATUS_MODULE_CLOCK_GATED_RA 0x00000040
> +#define VIVS_PM_MODULE_STATUS_MODULE_CLOCK_GATED_TX 0x00000080
>
> #define VIVS_PM_PULSE_EATER 0x0000010c
>
> diff --git a/include/uapi/drm/etnaviv_drm.h b/include/uapi/drm/etnaviv_drm.h
> index 4cc989a..f195e29 100644
> --- a/include/uapi/drm/etnaviv_drm.h
> +++ b/include/uapi/drm/etnaviv_drm.h
> @@ -59,6 +59,7 @@ struct drm_etnaviv_timespec {
> #define ETNAVIV_PARAM_GPU_BUFFER_SIZE 0x17
> #define ETNAVIV_PARAM_GPU_INSTRUCTION_COUNT 0x18
> #define ETNAVIV_PARAM_GPU_NUM_CONSTANTS 0x19
> +#define ETNAVIV_PARAM_GPU_NUM_VARYINGS 0x20
>
> #define ETNA_MAX_PIPES 4
>
> --
> 2.5.0
>
--
RMK's Patch system: http://www.arm.linux.org.uk/developer/patches/
FTTC broadband for 0.8mile line: currently at 9.6Mbps down 400kbps up
according to speedtest.net.
