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 <frank.binns@imgtec.com>
Link: https://lore.kernel.org/r/20250410-sets-bxs-4-64-patch-v1-v6-13-eda620c5865f@imgtec.com
Signed-off-by: Matt Coster <matt.coster@imgtec.com>
With more than two firmware processor types, the if/else chain in
pvr_fw_init() gets a bit ridiculous. Use a static array indexed on
pvr_fw_processor_type (which is now a proper enum instead of #defines)
instead.
Reviewed-by: Frank Binns <frank.binns@imgtec.com>
Link: https://lore.kernel.org/r/20250410-sets-bxs-4-64-patch-v1-v6-11-eda620c5865f@imgtec.com
Signed-off-by: Matt Coster <matt.coster@imgtec.com>
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 <frank.binns@imgtec.com>
Link: https://lore.kernel.org/r/20250410-sets-bxs-4-64-patch-v1-v6-8-eda620c5865f@imgtec.com
Signed-off-by: Matt Coster <matt.coster@imgtec.com>
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 <sarah.walker@imgtec.com>
Signed-off-by: Donald Robson <donald.robson@imgtec.com>
Link: https://lore.kernel.org/r/bb52a8dc84f296b37dc6668dfe8fbaf2ba551139.1700668843.git.donald.robson@imgtec.com
Signed-off-by: Maxime Ripard <mripard@kernel.org>
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 <frank.binns@imgtec.com>
Signed-off-by: Frank Binns <frank.binns@imgtec.com>
Co-developed-by: Matt Coster <matt.coster@imgtec.com>
Signed-off-by: Matt Coster <matt.coster@imgtec.com>
Co-developed-by: Donald Robson <donald.robson@imgtec.com>
Signed-off-by: Donald Robson <donald.robson@imgtec.com>
Signed-off-by: Sarah Walker <sarah.walker@imgtec.com>
Link: https://lore.kernel.org/r/1ff76f7a5b45c742279c78910f8491b8a5e7f6e6.1700668843.git.donald.robson@imgtec.com
Signed-off-by: Maxime Ripard <mripard@kernel.org>
