R5 is included in Xilinx Zynq UltraScale MPSoC so by adding this
remotproc driver, we can boot the R5 sub-system in different 2
configurations: split or lock-step.
The Xilinx R5 Remoteproc Driver boots the R5's via calls to the Xilinx
Platform Management Unit that handles the R5 configuration, memory access
and R5 lifecycle management. The interface to this manager is done in this
driver via zynqmp_pm_* function calls.
Signed-off-by: Ben Levinsky
Signed-off-by: Wendy Liang
Signed-off-by: Michal Simek
Signed-off-by: Ed Mooring
Signed-off-by: Jason Wu
---
v2:
- remove domain struct as per review from Mathieu
v3:
- add xilinx-related platform mgmt fn's instead of wrapping around
function pointer in xilinx eemi ops struct
v4:
- add default values for enums
- fix formatting as per checkpatch.pl --strict. Note that 1 warning and 1 check
are still raised as each is due to fixing the warning results in that
particular line going over 80 characters.
v5:
- parse_fw change from use of rproc_of_resm_mem_entry_init to
rproc_mem_entry_init and use of alloc/release
- var's of type zynqmp_r5_pdata all have same local variable name
- use dev_dbg instead of dev_info
v6:
- adding memory carveouts is handled much more similarly. All mem
carveouts are
now described in reserved memory as needed. That is, TCM nodes are not
coupled to remoteproc anymore. This is reflected in the remoteproc R5
driver
and the device tree binding.
- remove mailbox from device tree binding as it is not necessary for elf
loading
- use lockstep-mode property for configuring RPU
v7:
- remove unused headers
- change u32 *lockstep_mode -> u32 lockstep_mode;
- change device-tree binding "lockstep-mode" to xlnx,cluster-mode
- remove zynqmp_r5_mem_probe and loop to Probe R5 memory devices at
remoteproc-probe time
- remove is_r5_mode_set from zynqmp rpu remote processor private data
- do not error out if no mailbox is provided
- remove zynqmp_r5_remoteproc_probe call of platform_set_drvdata as
pdata is
handled in zynqmp_r5_remoteproc_remove
v8:
- remove old acks, reviewed-by's in commit message
v9:
- as mboxes are now optional, if pdata->tx_mc_skbs not initialized then
do not call skb_queue_empty
- update usage for zynqmp_pm_set_rpu_mode, zynqmp_pm_set_tcm_config and
zynqmp_pm_get_rpu_mode
- update 5/5 patch commit message to document supported configurations
and how they are booted by the driver.
- remove copyrights other than SPDX from zynqmp_r5_remoteproc.c
- compilation warnings no longer raised
- remove unused includes from zynqmp_r5_remoteproc.c
- remove unused var autoboot from zynqmp_r5_remoteproc.c
- reorder zynqmp_r5_pdata fpr small mem savings due to alignment
- use of zynqmp_pm_set_tcm_config now does not have
output arg
- in tcm handling, unconditionally use &= 0x000f mask since all nodes
in this fn are for tcm
- update comments for translating dma field in tcm handling to device
address
- update calls to rproc_mem_entry_init in parse_mem_regions so that there
are only 2 cases for types of carveouts instead of 3
- in parse_mem_regions, check if device tree node is null before using it
- add example device tree nodes used in parse_mem_regions and tcm parsing
- add comment for vring id node length
- add check for string length so that vring id is at least min length
- move tcm nodes from reserved mem to instead own device tree nodes
and only use them if enabled in device tree
- add comment for explaining handling of rproc_elf_load_rsc_table
- remove obsolete check for "if (vqid < 0)" in zynqmp_r5_rproc_kick
- remove unused field mems in struct zynqmp_r5_pdata
- remove call to zynqmp_r5_mem_probe and the fn itself as tcm handling
is done by zyqmp_r5_pm_request_tcm
- remove obsolete setting of dma_ops and parent device dma_mask
- remove obsolete use of of_dma_configure
- add comment for call to r5_set_mode fn
- make mbox usage optional and gracefully inform user via dev_dbg if not
present
- change var lockstep_mode from u32* to u32
v11:
- use enums instead of u32 where possible in zynqmp_r5_remoteproc
- update usage of zynqmp_pm_set/get_rpu_mode and zynqmp_pm_set_tcm_config
- update prints to not use carriage return, just newline
- look up tcm banks via property in r5 node instead of string name
- print device tree nodes with %pOF instead of %s with node name field
- update tcm release to unmap VA
- handle r5-1 use case
---
drivers/remoteproc/Kconfig| 10 +
drivers/remoteproc/Makefile | 1 +
drivers/remoteproc/zynqmp_r5_remoteproc.c | 898 ++
3 files changed, 909 insertions(+)
create mode 100644 drivers/remoteproc/zynqmp_r5_remoteproc.c
diff --git a/drivers/remoteproc/Kconfig b/drivers/remoteproc/Kconfig
index c4d1731295eb..dd9ed45654e0 100644
--- a/drivers/remoteproc/Kconfig
+++ b/drivers/remoteproc/Kconfig
@@ -249,6 +249,16 @@ config STM32_RPROC
This can be either built-in or a loadable
