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path: root/drivers/gpu/drm/imagination
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2023-11-23drm/imagination: Implement free list and HWRT create and destroy ioctlsSarah Walker8-4/+1678
Implement ioctls to create and destroy free lists and HWRT datasets. Free lists are used for GPU-side memory allocation during geometry processing. HWRT datasets are the FW-side structures representing render targets. Changes since v8: - Corrected license identifiers Changes since v6: - Fix out-of-bounds shift in get_cr_multisamplectl_val() Changes since v4: - Remove use of drm_gem_shmem_get_pages() Changes since v3: - Support free list grow requests from FW - Use drm_dev_{enter,exit} Co-developed-by: Boris Brezillon <[email protected]> Signed-off-by: Boris Brezillon <[email protected]> Co-developed-by: Donald Robson <[email protected]> Signed-off-by: Donald Robson <[email protected]> Signed-off-by: Sarah Walker <[email protected]> Link: https://lore.kernel.org/r/919358c5887a7628da588c455a5bb7e3ea4b47ae.1700668843.git.donald.robson@imgtec.com Signed-off-by: Maxime Ripard <[email protected]>
2023-11-23drm/imagination: Implement MIPS firmware processor and MMU supportSarah Walker8-2/+572
Add support for the MIPS firmware processor, used in the Series AXE GPU. The MIPS firmware processor uses a separate MMU to the rest of the GPU, so this patch adds support for that as well. Changes since v8: - Corrected license identifiers Changes since v6: - Fix integer overflow in VM map error path Changes since v5: - Use alloc_page() when allocating MIPS pagetable Changes since v3: - Get regs resource (removed from GPU resources commit) Signed-off-by: Sarah Walker <[email protected]> Signed-off-by: Donald Robson <[email protected]> Link: https://lore.kernel.org/r/a114f7b3e97cb07460c7f2842901716a9207b0c4.1700668843.git.donald.robson@imgtec.com Signed-off-by: Maxime Ripard <[email protected]>
2023-11-23drm/imagination: Implement firmware infrastructure and META FW supportSarah Walker18-24/+4015
The infrastructure includes parsing of the firmware image, initialising FW-side structures, handling the kernel and firmware command ringbuffers and starting & stopping the firmware processor. This patch also adds the necessary support code for the META firmware processor. Changes since v8: - Fix documentation for pvr_fwccb_process() - Corrected license identifiers Changes since v6: - Add a minimum retry count to pvr_kccb_reserve_slot_sync() Changes since v5: - Add workaround for BRN 71242 - Attempt to recover GPU on MMU flush command failure Changes since v4: - Remove use of drm_gem_shmem_get_pages() - Remove interrupt resource name Changes since v3: - Hard reset FW processor on watchdog timeout - Switch to threaded IRQ - Rework FW object creation/initialisation to aid hard reset - Added MODULE_FIRMWARE() - Use drm_dev_{enter,exit} Signed-off-by: Sarah Walker <[email protected]> Signed-off-by: Donald Robson <[email protected]> Link: https://lore.kernel.org/r/bb52a8dc84f296b37dc6668dfe8fbaf2ba551139.1700668843.git.donald.robson@imgtec.com Signed-off-by: Maxime Ripard <[email protected]>
2023-11-23drm/imagination: Implement power managementSarah Walker7-3/+374
Add power management to the driver, using runtime pm. The power off sequence depends on firmware commands which are not implemented in this patch. Changes since v8: - Corrected license identifiers Changes since v5: - Use RUNTIME_PM_OPS() to declare PM callbacks - Add Kconfig dependency on CONFIG_PM Changes since v4: - Suspend runtime PM before unplugging device on rmmod Changes since v3: - Don't power device when calling pvr_device_gpu_fini() - Documentation for pvr_dev->lost has been improved - pvr_power_init() renamed to pvr_watchdog_init() - Use drm_dev_{enter,exit} Changes since v2: - Use runtime PM - Implement watchdog Signed-off-by: Sarah Walker <[email protected]> Signed-off-by: Donald Robson <[email protected]> Reviewed-by: Maxime Ripard <[email protected]> Link: https://lore.kernel.org/r/e09af4ef1ff514e1d6d7f97c7c5032c643c56f9c.1700668843.git.donald.robson@imgtec.com Signed-off-by: Maxime Ripard <[email protected]>
2023-11-23drm/imagination: Add GEM and VM related codeDonald Robson11-11/+4756
Add a GEM implementation based on drm_gem_shmem, and support code for the PowerVR GPU MMU. The GPU VA manager is used for address space management. Changes since v8: - Updated for changes to drm_gpuvm - Switched to dma_resv locking for vm ops - Removed linked lists for collecting BOs in vm_context and for freeing after ops. This is now done internally in drm_gpuvm - Corrected license identifiers Changes since v7: - kernel-doc fixes - Remove prefixes from DRM_PVR_BO_* flags - CREATE_BO ioctl now returns an error if provided size isn't page aligned - Optimised MMU flushes Changes since v6: - Don't initialise kernel_vm_ctx when using MIPS firmware processor - Rename drm_gpuva_manager uses to drm_gpuvm - Sync GEM object to device on creation Changes since v5: - Use WRITE_ONCE() when writing to page tables - Add memory barriers to page table insertion - Fixed double backing page alloc on page table objects - Fix BO mask checks in DRM_IOCTL_PVR_CREATE_BO handler - Document use of pvr_page_table_*_idx when preallocing page table objs - Remove pvr_vm_gpuva_mapping_init() - Remove NULL check for unmap op in remap function - Protect gem object with mutex during drm_gpuva_link/unlink - Defer free or release of page table pages until after TLB flush - Use drm_gpuva_op_remap_get_unmap_range() helper Changes since v4: - Correct sync function in vmap/vunmap function documentation - Update for upstream GPU VA manager - Fix missing frees when unmapping drm_gpuva objects - Always zero GEM BOs on creation Changes since v3: - Split MMU and VM code - Register page table allocations with kmemleak - Use drm_dev_{enter,exit} Changes since v2: - Use GPU VA manager - Use drm_gem_shmem Co-developed-by: Matt Coster <[email protected]> Signed-off-by: Matt Coster <[email protected]> Co-developed-by: Donald Robson <[email protected]> Signed-off-by: Donald Robson <[email protected]> Signed-off-by: Sarah Walker <[email protected]> Link: https://lore.kernel.org/r/3c96dd170efe759b73897e3675d7310a7c4b06d0.1700668843.git.donald.robson@imgtec.com Signed-off-by: Maxime Ripard <[email protected]>
2023-11-23drm/imagination: Add GPU ID parsing and firmware loadingSarah Walker10-2/+1925
Read the GPU ID register at probe time and select the correct features/quirks/enhancements. Use the GPU ID to form the firmware file name and load the firmware. The features/quirks/enhancements arrays are currently hardcoded in the driver for the supported GPUs. We are looking at moving this information to the firmware image. Changes since v8: - Corrected license identifiers Changes since v7: - Fix kerneldoc for pvr_device_info_set_enhancements() Changes since v5: - Add BRN 71242 to device info Changes since v4: - Retrieve device information from firmware header - Pull forward firmware header parsing from FW infrastructure patch - Use devm_add_action_or_reset to release firmware Changes since v3: - Use drm_dev_{enter,exit} Co-developed-by: Frank Binns <[email protected]> Signed-off-by: Frank Binns <[email protected]> Co-developed-by: Matt Coster <[email protected]> Signed-off-by: Matt Coster <[email protected]> Co-developed-by: Donald Robson <[email protected]> Signed-off-by: Donald Robson <[email protected]> Signed-off-by: Sarah Walker <[email protected]> Link: https://lore.kernel.org/r/1ff76f7a5b45c742279c78910f8491b8a5e7f6e6.1700668843.git.donald.robson@imgtec.com Signed-off-by: Maxime Ripard <[email protected]>
2023-11-23drm/imagination: Add FWIF headersSarah Walker10-0/+3832
Changes since v8: - Corrected license identifiers Changes since v7: - Add padding to struct rogue_fwif_ccb_ctl to place read and write offsets in different cache lines Changes since v5: - Split up header commit due to size - Add BRN 71242 to device info Changes since v4: - Add FW header device info Signed-off-by: Sarah Walker <[email protected]> Signed-off-by: Donald Robson <[email protected]> Acked-by: Maxime Ripard <[email protected]> Link: https://lore.kernel.org/r/aa681533a02bd2d46af17a6a6010f4d6048fbb0a.1700668843.git.donald.robson@imgtec.com Signed-off-by: Maxime Ripard <[email protected]>
2023-11-23drm/imagination: Add firmware and MMU related headersSarah Walker5-0/+998
Changes since v8: - Corrected license identifiers Changes since v5: - Split up header commit due to size Signed-off-by: Sarah Walker <[email protected]> Signed-off-by: Donald Robson <[email protected]> Acked-by: Maxime Ripard <[email protected]> Link: https://lore.kernel.org/r/23ee233dfbe6f2239328f8201fd6d8c1017cea58.1700668843.git.donald.robson@imgtec.com Signed-off-by: Maxime Ripard <[email protected]>
2023-11-23drm/imagination: Add GPU register headersSarah Walker3-0/+6531
Changes since v8: - Corrected license identifiers Changes since v5: - Split up header commit due to size Signed-off-by: Sarah Walker <[email protected]> Signed-off-by: Donald Robson <[email protected]> Reviewed-by: Maxime Ripard <[email protected]> Link: https://lore.kernel.org/r/9f1fbf6c18e9644ac10712e05893701f06aee6ae.1700668843.git.donald.robson@imgtec.com Signed-off-by: Maxime Ripard <[email protected]>
2023-11-23drm/imagination: Get GPU resourcesSarah Walker4-1/+317
Acquire clock and register resources, and enable/map as appropriate. Changes since v8: - Corrected license identifiers Changes since v3: - Remove regulator resource (not used on supported platform) - Use devm helpers - Use devm_clk_get_optional() for optional clocks - Don't prepare clocks on resource acquisition - Drop pvr_device_clk_core_get_freq() helper - Drop pvr_device_reg_fini() - Drop NULLing of clocks in pvr_device_clk_init() - Use dev_err_probe() on clock acquisition failure - Remove PVR_CR_READ/WRITE helper macros - Improve documentation for GPU clocks - Remove regs resource (not used in this commit) Co-developed-by: Frank Binns <[email protected]> Signed-off-by: Frank Binns <[email protected]> Co-developed-by: Matt Coster <[email protected]> Signed-off-by: Matt Coster <[email protected]> Signed-off-by: Sarah Walker <[email protected]> Signed-off-by: Donald Robson <[email protected]> Reviewed-by: Maxime Ripard <[email protected]> Link: https://lore.kernel.org/r/579027bd5be4eb3218c9784050ded2326ecbc352.1700668843.git.donald.robson@imgtec.com Signed-off-by: Maxime Ripard <[email protected]>
2023-11-23drm/imagination: Add skeleton PowerVR driverSarah Walker5-0/+708
This adds the basic skeleton of the driver. The driver registers itself with DRM on probe. Ioctl handlers are currently implemented as stubs. Changes since v8: - Corrected license identifiers Changes since v5: - Update compatible string & description to match marketing name - Checkpatch fixes in to/from_pvr_device/file macros Changes since v3: - Clarify supported GPU generations in driver description - Use drm_dev_unplug() when removing device - Change from_* and to_* functions to macros - Fix IS_PTR/PTR_ERR confusion in pvr_probe() - Remove err_out labels in favour of direct returning - Remove specific am62 compatible match string - Drop MODULE_FIRMWARE() Co-developed-by: Frank Binns <[email protected]> Signed-off-by: Frank Binns <[email protected]> Co-developed-by: Matt Coster <[email protected]> Signed-off-by: Matt Coster <[email protected]> Signed-off-by: Sarah Walker <[email protected]> Signed-off-by: Donald Robson <[email protected]> Reviewed-by: Maxime Ripard <[email protected]> Link: https://lore.kernel.org/r/fed8a77e29620a61aed2684f802339759082cf1b.1700668843.git.donald.robson@imgtec.com Signed-off-by: Maxime Ripard <[email protected]>
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