lwn.git/drivers/gpu/drm/imagination/pvr_fw_mips.c, branch docs-next

drm/imagination: Move ELF fw utils to common file

2025-04-15T11:21:52+00:00

Currently only MIPS firmware processors use ELF-formatted firmware. When adding support for RISC-V firmware processors, it will be useful to have ELF handling functions ready to go. Reviewed-by: Frank Binns Link: https://lore.kernel.org/r/20250410-sets-bxs-4-64-patch-v1-v6-13-eda620c5865f@imgtec.com Signed-off-by: Matt Coster

drm/imagination: Use callbacks for fw irq handling

2025-04-15T11:21:51+00:00

This allows for more versatility in checking and clearing firmware registers used for interrupt handling. Reviewed-by: Frank Binns Link: https://lore.kernel.org/r/20250410-sets-bxs-4-64-patch-v1-v6-12-eda620c5865f@imgtec.com Signed-off-by: Matt Coster

drm/imagination: Make has_fixed_data_addr a value

2025-04-15T11:21:51+00:00

This is currently a callback function which takes no parameters; there's no reason for this so let's make it a straightforward value in pvr_fw_defs. Reviewed-by: Frank Binns Link: https://lore.kernel.org/r/20250410-sets-bxs-4-64-patch-v1-v6-10-eda620c5865f@imgtec.com Signed-off-by: Matt Coster

drm/imagination: Rename event_mask -> status_mask

2025-04-15T11:21:51+00:00

Now that enable_reg isn't used, rename the previously shared event_mask to status_mask since it's only used with status_reg. Reviewed-by: Frank Binns Link: https://lore.kernel.org/r/20250410-sets-bxs-4-64-patch-v1-v6-9-eda620c5865f@imgtec.com Signed-off-by: Matt Coster

drm/imagination: Remove firmware enable_reg

2025-04-15T11:21:51+00:00

After a previous commit ("drm/imagination: Mask GPU IRQs in threaded handler"), this register is now only used to enable firmware interrupts at start-of-day. This is, however, unnecessary since they are enabled by default. In addition, the soon-to-be-added RISC-V firmware processors do not have an equivalent register. Reviewed-by: Frank Binns Link: https://lore.kernel.org/r/20250410-sets-bxs-4-64-patch-v1-v6-8-eda620c5865f@imgtec.com Signed-off-by: Matt Coster

drm/imagination: loop counters moved to loop scope

2025-04-07T09:09:40+00:00

Reduce the scope of some loop counters as these aren't needed outside the loops they're used in. Signed-off-by: Alexandru Dadu Reviewed-by: Matt Coster Link: https://lore.kernel.org/r/20250402-for-loop-counter-scope-v2-1-4fd550d22832@imgtec.com Signed-off-by: Matt Coster

drm/imagination: Implement MIPS firmware processor and MMU support

2023-11-23T08:01:46+00:00

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 Signed-off-by: Donald Robson Link: https://lore.kernel.org/r/a114f7b3e97cb07460c7f2842901716a9207b0c4.1700668843.git.donald.robson@imgtec.com Signed-off-by: Maxime Ripard