X-Git-Url: https://git.libre-soc.org/?a=blobdiff_plain;f=src%2Fgallium%2Fdrivers%2Fvc4%2Fvc4_drm.h;h=110c783e5fd9c0f55253551158904044fbba7d5c;hb=fad158a0e01f4c28851477e6d1eb5c8fd67e226b;hp=430d7cc131487a1f08a2166b9a119d40daeec9d7;hpb=1850d0a1cbf044dc4d29b7a9ede2c634f667d853;p=mesa.git diff --git a/src/gallium/drivers/vc4/vc4_drm.h b/src/gallium/drivers/vc4/vc4_drm.h index 430d7cc1314..110c783e5fd 100644 --- a/src/gallium/drivers/vc4/vc4_drm.h +++ b/src/gallium/drivers/vc4/vc4_drm.h @@ -1,5 +1,5 @@ /* - * Copyright © 2014 Broadcom + * Copyright © 2014-2015 Broadcom * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the "Software"), @@ -27,19 +27,253 @@ #include #define DRM_VC4_SUBMIT_CL 0x00 +#define DRM_VC4_WAIT_SEQNO 0x01 +#define DRM_VC4_WAIT_BO 0x02 +#define DRM_VC4_CREATE_BO 0x03 +#define DRM_VC4_MMAP_BO 0x04 +#define DRM_VC4_CREATE_SHADER_BO 0x05 +#define DRM_VC4_GET_HANG_STATE 0x06 #define DRM_IOCTL_VC4_SUBMIT_CL DRM_IOWR( DRM_COMMAND_BASE + DRM_VC4_SUBMIT_CL, struct drm_vc4_submit_cl) +#define DRM_IOCTL_VC4_WAIT_SEQNO DRM_IOWR( DRM_COMMAND_BASE + DRM_VC4_WAIT_SEQNO, struct drm_vc4_wait_seqno) +#define DRM_IOCTL_VC4_WAIT_BO DRM_IOWR( DRM_COMMAND_BASE + DRM_VC4_WAIT_BO, struct drm_vc4_wait_bo) +#define DRM_IOCTL_VC4_CREATE_BO DRM_IOWR( DRM_COMMAND_BASE + DRM_VC4_CREATE_BO, struct drm_vc4_create_bo) +#define DRM_IOCTL_VC4_MMAP_BO DRM_IOWR( DRM_COMMAND_BASE + DRM_VC4_MMAP_BO, struct drm_vc4_mmap_bo) +#define DRM_IOCTL_VC4_CREATE_SHADER_BO DRM_IOWR( DRM_COMMAND_BASE + DRM_VC4_CREATE_SHADER_BO, struct drm_vc4_create_shader_bo) +#define DRM_IOCTL_VC4_GET_HANG_STATE DRM_IOWR( DRM_COMMAND_BASE + DRM_VC4_GET_HANG_STATE, struct drm_vc4_get_hang_state) +struct drm_vc4_submit_rcl_surface { + uint32_t hindex; /* Handle index, or ~0 if not present. */ + uint32_t offset; /* Offset to start of buffer. */ + /* + * Bits for either render config (color_write) or load/store packet. + * Bits should all be 0 for MSAA load/stores. + */ + uint16_t bits; + +#define VC4_SUBMIT_RCL_SURFACE_READ_IS_FULL_RES (1 << 0) + uint16_t flags; +}; + +/** + * struct drm_vc4_submit_cl - ioctl argument for submitting commands to the 3D + * engine. + * + * Drivers typically use GPU BOs to store batchbuffers / command lists and + * their associated state. However, because the VC4 lacks an MMU, we have to + * do validation of memory accesses by the GPU commands. If we were to store + * our commands in BOs, we'd need to do uncached readback from them to do the + * validation process, which is too expensive. Instead, userspace accumulates + * commands and associated state in plain memory, then the kernel copies the + * data to its own address space, and then validates and stores it in a GPU + * BO. + */ struct drm_vc4_submit_cl { - void __user *bin_cl; - void __user *render_cl; - void __user *shader_records; - void __user *bo_handles; - uint32_t bin_cl_len; - uint32_t render_cl_len; - uint32_t shader_record_len; - uint32_t shader_record_count; - uint32_t bo_handle_count; + /* Pointer to the binner command list. + * + * This is the first set of commands executed, which runs the + * coordinate shader to determine where primitives land on the screen, + * then writes out the state updates and draw calls necessary per tile + * to the tile allocation BO. + */ + uint64_t bin_cl; + + /* Pointer to the shader records. + * + * Shader records are the structures read by the hardware that contain + * pointers to uniforms, shaders, and vertex attributes. The + * reference to the shader record has enough information to determine + * how many pointers are necessary (fixed number for shaders/uniforms, + * and an attribute count), so those BO indices into bo_handles are + * just stored as uint32_ts before each shader record passed in. + */ + uint64_t shader_rec; + + /* Pointer to uniform data and texture handles for the textures + * referenced by the shader. + * + * For each shader state record, there is a set of uniform data in the + * order referenced by the record (FS, VS, then CS). Each set of + * uniform data has a uint32_t index into bo_handles per texture + * sample operation, in the order the QPU_W_TMUn_S writes appear in + * the program. Following the texture BO handle indices is the actual + * uniform data. + * + * The individual uniform state blocks don't have sizes passed in, + * because the kernel has to determine the sizes anyway during shader + * code validation. + */ + uint64_t uniforms; + uint64_t bo_handles; + + /* Size in bytes of the binner command list. */ + uint32_t bin_cl_size; + /* Size in bytes of the set of shader records. */ + uint32_t shader_rec_size; + /* Number of shader records. + * + * This could just be computed from the contents of shader_records and + * the address bits of references to them from the bin CL, but it + * keeps the kernel from having to resize some allocations it makes. + */ + uint32_t shader_rec_count; + /* Size in bytes of the uniform state. */ + uint32_t uniforms_size; + + /* Number of BO handles passed in (size is that times 4). */ + uint32_t bo_handle_count; + + /* RCL setup: */ + uint16_t width; + uint16_t height; + uint8_t min_x_tile; + uint8_t min_y_tile; + uint8_t max_x_tile; + uint8_t max_y_tile; + struct drm_vc4_submit_rcl_surface color_read; + struct drm_vc4_submit_rcl_surface color_write; + struct drm_vc4_submit_rcl_surface zs_read; + struct drm_vc4_submit_rcl_surface zs_write; + struct drm_vc4_submit_rcl_surface msaa_color_write; + struct drm_vc4_submit_rcl_surface msaa_zs_write; + uint32_t clear_color[2]; + uint32_t clear_z; + uint8_t clear_s; + + uint32_t pad:24; + +#define VC4_SUBMIT_CL_USE_CLEAR_COLOR (1 << 0) + uint32_t flags; + + /* Returned value of the seqno of this render job (for the + * wait ioctl). + */ + uint64_t seqno; +}; + +/** + * struct drm_vc4_wait_seqno - ioctl argument for waiting for + * DRM_VC4_SUBMIT_CL completion using its returned seqno. + * + * timeout_ns is the timeout in nanoseconds, where "0" means "don't + * block, just return the status." + */ +struct drm_vc4_wait_seqno { + uint64_t seqno; + uint64_t timeout_ns; +}; + +/** + * struct drm_vc4_wait_bo - ioctl argument for waiting for + * completion of the last DRM_VC4_SUBMIT_CL on a BO. + * + * This is useful for cases where multiple processes might be + * rendering to a BO and you want to wait for all rendering to be + * completed. + */ +struct drm_vc4_wait_bo { + uint32_t handle; + uint32_t pad; + uint64_t timeout_ns; +}; + +/** + * struct drm_vc4_create_bo - ioctl argument for creating VC4 BOs. + * + * There are currently no values for the flags argument, but it may be + * used in a future extension. + */ +struct drm_vc4_create_bo { + uint32_t size; + uint32_t flags; + /** Returned GEM handle for the BO. */ + uint32_t handle; + uint32_t pad; +}; + +/** + * struct drm_vc4_create_shader_bo - ioctl argument for creating VC4 + * shader BOs. + * + * Since allowing a shader to be overwritten while it's also being + * executed from would allow privlege escalation, shaders must be + * created using this ioctl, and they can't be mmapped later. + */ +struct drm_vc4_create_shader_bo { + /* Size of the data argument. */ + uint32_t size; + /* Flags, currently must be 0. */ + uint32_t flags; + + /* Pointer to the data. */ + uint64_t data; + + /** Returned GEM handle for the BO. */ + uint32_t handle; + /* Pad, must be 0. */ + uint32_t pad; +}; + +/** + * struct drm_vc4_mmap_bo - ioctl argument for mapping VC4 BOs. + * + * This doesn't actually perform an mmap. Instead, it returns the + * offset you need to use in an mmap on the DRM device node. This + * means that tools like valgrind end up knowing about the mapped + * memory. + * + * There are currently no values for the flags argument, but it may be + * used in a future extension. + */ +struct drm_vc4_mmap_bo { + /** Handle for the object being mapped. */ + uint32_t handle; + uint32_t flags; + /** offset into the drm node to use for subsequent mmap call. */ + uint64_t offset; +}; + +struct drm_vc4_get_hang_state_bo { + uint32_t handle; + uint32_t paddr; + uint32_t size; + uint32_t pad; +}; + +/** + * struct drm_vc4_hang_state - ioctl argument for collecting state + * from a GPU hang for analysis. +*/ +struct drm_vc4_get_hang_state { + /** Pointer to array of struct drm_vc4_get_hang_state_bo. */ + uint64_t bo; + /** + * On input, the size of the bo array. Output is the number + * of bos to be returned. + */ + uint32_t bo_count; + + uint32_t start_bin, start_render; + + uint32_t ct0ca, ct0ea; + uint32_t ct1ca, ct1ea; + uint32_t ct0cs, ct1cs; + uint32_t ct0ra0, ct1ra0; + + uint32_t bpca, bpcs; + uint32_t bpoa, bpos; + + uint32_t vpmbase; + + uint32_t dbge; + uint32_t fdbgo; + uint32_t fdbgb; + uint32_t fdbgr; + uint32_t fdbgs; + uint32_t errstat; + + /* Pad that we may save more registers into in the future. */ + uint32_t pad[16]; }; #endif /* _UAPI_VC4_DRM_H_ */