movedma

MOVEDMA (MOVDMA in some places) seems to a generic memory to memory DMA engine. This is no proper DMA engine driver for it in the vendor kernel.

There is a HAL and a single function that uses it in the 'msys' module that seems to be for exporting it to external modules

For i2m SPI can also be driven by movedma: https://github.com/linux-chenxing/linux-ssc325/blob/979122be45d470e959c2245c996fa93dea10069b/drivers/sstar/spi/infinity2m/mspi.c#L1141

Register map

offset	name	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0	notes
0x0																	en
0x4																	move0_offset_en
0x8																	move0_en_status
0xc	move0_src_start_addr_l
0x10	move0_src_start_addr_h
0x14	move0_dest_start_addr_l
0x18	move0_dest_start_addr_h
0x1c	move0_total_byte_cnt_l
0x20	move0_total_byte_cnt_h
0x24	move0_offset_src_width_l
0x28	move0_offset_src_width_h
0x2c	move0_offset_src_offset_l
0x30	move0_offset_src_offset_h
0x34	move0_offset_dest_width_l
0x38	move0_offset_dest_width_h
0x3c	move0_offset_dest_offset_l
0x40	move0_offset_dest_offset_h
0x44	dma_move0_left_byte_l
0x48	dma_move0_left_byte_h
0x90	dma_mov_sw_rst
0x94	dma02mi_priority_mask
0x98	dma_irq_mask
0x9c	dma_irq_force
0xa0	dma_irq_clr
0xa4	dma_irq_select
0xa8	dma_irq_final_status
0xac	dma_irq_raw_status
0xb0	dma_probe_sel
0xb4	dma_probe_l
0xb8	dma_probe_h
0xbc	dma_bist_fail_rd
0xc0														dma_move0_dst_miu_sel	dma_move0_src_miu_sel	dma_move0_miu_sel_en
0x100	dma_cmdq_irq_mask
0x104	dma_cmdq_irq_force
0x108	dma_cmdq_irq_clr
0x10c	dma_cmdq_irq_select
0x110	dma_cmdq_irq_final_status
0x114	dma_cmdq_irq_raw_status
0x140	dma direction
0x144	dma mode
0x148	dev sel																x	0 == mspi0 1 == mspi1