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| author | Guodong Xu <guodong@riscstar.com> | 2025-08-22 11:06:31 +0800 |
|---|---|---|
| committer | Vinod Koul <vkoul@kernel.org> | 2025-09-02 12:37:42 +0530 |
| commit | 5cfe585d8624f7482505183dd0e4c534b061e822 (patch) | |
| tree | d56a2b31f9c5a87f666bd8d291b028603c40fe59 /drivers/infiniband/hw/ionic/ionic_controlpath.c | |
| parent | 35e40bf761fcb24b1355d6a8d48b5b10683fe1a3 (diff) | |
dmaengine: mmp_pdma: Add SpacemiT K1 PDMA support with 64-bit addressing
Add support for SpacemiT K1 PDMA controller which features 64-bit
addressing capabilities.
The SpacemiT K1 PDMA extends the descriptor format with additional
32-bit words for high address bits, enabling access to memory beyond
4GB boundaries. The new spacemit_k1_pdma_ops provides necessary 64-bit
address handling functions and k1 specific controller configurations.
Key changes:
- Add ARCH_SPACEMIT dependency to Kconfig
- Define new high 32-bit address registers (DDADRH, DSADRH, DTADRH)
- Add DCSR_LPAEEN bit for Long Physical Address Extension Enable
- Implement 64-bit operations for SpacemiT K1 PDMA
Signed-off-by: Guodong Xu <guodong@riscstar.com>
Link: https://lore.kernel.org/r/20250822-working_dma_0701_v2-v5-5-f5c0eda734cc@riscstar.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Diffstat (limited to 'drivers/infiniband/hw/ionic/ionic_controlpath.c')
0 files changed, 0 insertions, 0 deletions