| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Lizhi Hou | 389 | 100.00% | 1 | 100.00% |
| Total | 389 | 1 |
/* SPDX-License-Identifier: GPL-2.0-or-later */ /* * Copyright (C) 2017-2020 Xilinx, Inc. All rights reserved. * Copyright (C) 2022, Advanced Micro Devices, Inc. */ #ifndef __DMA_XDMA_REGS_H #define __DMA_XDMA_REGS_H /* The length of register space exposed to host */ #define XDMA_REG_SPACE_LEN 65536 /* * maximum number of DMA channels for each direction: * Host to Card (H2C) or Card to Host (C2H) */ #define XDMA_MAX_CHANNELS 4 /* * macros to define the number of descriptor blocks can be used in one * DMA transfer request. * the DMA engine uses a linked list of descriptor blocks that specify the * source, destination, and length of the DMA transfers. */ #define XDMA_DESC_BLOCK_NUM BIT(7) #define XDMA_DESC_BLOCK_MASK (XDMA_DESC_BLOCK_NUM - 1) /* descriptor definitions */ #define XDMA_DESC_ADJACENT 32 #define XDMA_DESC_ADJACENT_MASK (XDMA_DESC_ADJACENT - 1) #define XDMA_DESC_ADJACENT_BITS GENMASK(13, 8) #define XDMA_DESC_MAGIC 0xad4bUL #define XDMA_DESC_MAGIC_BITS GENMASK(31, 16) #define XDMA_DESC_FLAGS_BITS GENMASK(7, 0) #define XDMA_DESC_STOPPED BIT(0) #define XDMA_DESC_COMPLETED BIT(1) #define XDMA_DESC_BLEN_BITS 28 #define XDMA_DESC_BLEN_MAX (BIT(XDMA_DESC_BLEN_BITS) - PAGE_SIZE) /* macros to construct the descriptor control word */ #define XDMA_DESC_CONTROL(adjacent, flag) \ (FIELD_PREP(XDMA_DESC_MAGIC_BITS, XDMA_DESC_MAGIC) | \ FIELD_PREP(XDMA_DESC_ADJACENT_BITS, (adjacent) - 1) | \ FIELD_PREP(XDMA_DESC_FLAGS_BITS, (flag))) #define XDMA_DESC_CONTROL_LAST \ XDMA_DESC_CONTROL(1, XDMA_DESC_STOPPED | XDMA_DESC_COMPLETED) /* * Descriptor for a single contiguous memory block transfer. * * Multiple descriptors are linked by means of the next pointer. An additional * extra adjacent number gives the amount of extra contiguous descriptors. * * The descriptors are in root complex memory, and the bytes in the 32-bit * words must be in little-endian byte ordering. */ struct xdma_hw_desc { __le32 control; __le32 bytes; __le64 src_addr; __le64 dst_addr; __le64 next_desc; }; #define XDMA_DESC_SIZE sizeof(struct xdma_hw_desc) #define XDMA_DESC_BLOCK_SIZE (XDMA_DESC_SIZE * XDMA_DESC_ADJACENT) #define XDMA_DESC_BLOCK_ALIGN 4096 /* * Channel registers */ #define XDMA_CHAN_IDENTIFIER 0x0 #define XDMA_CHAN_CONTROL 0x4 #define XDMA_CHAN_CONTROL_W1S 0x8 #define XDMA_CHAN_CONTROL_W1C 0xc #define XDMA_CHAN_STATUS 0x40 #define XDMA_CHAN_COMPLETED_DESC 0x48 #define XDMA_CHAN_ALIGNMENTS 0x4c #define XDMA_CHAN_INTR_ENABLE 0x90 #define XDMA_CHAN_INTR_ENABLE_W1S 0x94 #define XDMA_CHAN_INTR_ENABLE_W1C 0x9c #define XDMA_CHAN_STRIDE 0x100 #define XDMA_CHAN_H2C_OFFSET 0x0 #define XDMA_CHAN_C2H_OFFSET 0x1000 #define XDMA_CHAN_H2C_TARGET 0x0 #define XDMA_CHAN_C2H_TARGET 0x1 /* macro to check if channel is available */ #define XDMA_CHAN_MAGIC 0x1fc0 #define XDMA_CHAN_CHECK_TARGET(id, target) \ (((u32)(id) >> 16) == XDMA_CHAN_MAGIC + (target)) /* bits of the channel control register */ #define CHAN_CTRL_RUN_STOP BIT(0) #define CHAN_CTRL_IE_DESC_STOPPED BIT(1) #define CHAN_CTRL_IE_DESC_COMPLETED BIT(2) #define CHAN_CTRL_IE_DESC_ALIGN_MISMATCH BIT(3) #define CHAN_CTRL_IE_MAGIC_STOPPED BIT(4) #define CHAN_CTRL_IE_IDLE_STOPPED BIT(6) #define CHAN_CTRL_IE_READ_ERROR GENMASK(13, 9) #define CHAN_CTRL_IE_DESC_ERROR GENMASK(23, 19) #define CHAN_CTRL_NON_INCR_ADDR BIT(25) #define CHAN_CTRL_POLL_MODE_WB BIT(26) #define CHAN_CTRL_START (CHAN_CTRL_RUN_STOP | \ CHAN_CTRL_IE_DESC_STOPPED | \ CHAN_CTRL_IE_DESC_COMPLETED | \ CHAN_CTRL_IE_DESC_ALIGN_MISMATCH | \ CHAN_CTRL_IE_MAGIC_STOPPED | \ CHAN_CTRL_IE_READ_ERROR | \ CHAN_CTRL_IE_DESC_ERROR) /* bits of the channel interrupt enable mask */ #define CHAN_IM_DESC_ERROR BIT(19) #define CHAN_IM_READ_ERROR BIT(9) #define CHAN_IM_IDLE_STOPPED BIT(6) #define CHAN_IM_MAGIC_STOPPED BIT(4) #define CHAN_IM_DESC_COMPLETED BIT(2) #define CHAN_IM_DESC_STOPPED BIT(1) #define CHAN_IM_ALL (CHAN_IM_DESC_ERROR | CHAN_IM_READ_ERROR | \ CHAN_IM_IDLE_STOPPED | CHAN_IM_MAGIC_STOPPED | \ CHAN_IM_DESC_COMPLETED | CHAN_IM_DESC_STOPPED) /* * Channel SGDMA registers */ #define XDMA_SGDMA_IDENTIFIER 0x4000 #define XDMA_SGDMA_DESC_LO 0x4080 #define XDMA_SGDMA_DESC_HI 0x4084 #define XDMA_SGDMA_DESC_ADJ 0x4088 #define XDMA_SGDMA_DESC_CREDIT 0x408c /* bits of the SG DMA control register */ #define XDMA_CTRL_RUN_STOP BIT(0) #define XDMA_CTRL_IE_DESC_STOPPED BIT(1) #define XDMA_CTRL_IE_DESC_COMPLETED BIT(2) #define XDMA_CTRL_IE_DESC_ALIGN_MISMATCH BIT(3) #define XDMA_CTRL_IE_MAGIC_STOPPED BIT(4) #define XDMA_CTRL_IE_IDLE_STOPPED BIT(6) #define XDMA_CTRL_IE_READ_ERROR GENMASK(13, 9) #define XDMA_CTRL_IE_DESC_ERROR GENMASK(23, 19) #define XDMA_CTRL_NON_INCR_ADDR BIT(25) #define XDMA_CTRL_POLL_MODE_WB BIT(26) /* * interrupt registers */ #define XDMA_IRQ_IDENTIFIER 0x2000 #define XDMA_IRQ_USER_INT_EN 0x2004 #define XDMA_IRQ_USER_INT_EN_W1S 0x2008 #define XDMA_IRQ_USER_INT_EN_W1C 0x200c #define XDMA_IRQ_CHAN_INT_EN 0x2010 #define XDMA_IRQ_CHAN_INT_EN_W1S 0x2014 #define XDMA_IRQ_CHAN_INT_EN_W1C 0x2018 #define XDMA_IRQ_USER_INT_REQ 0x2040 #define XDMA_IRQ_CHAN_INT_REQ 0x2044 #define XDMA_IRQ_USER_INT_PEND 0x2048 #define XDMA_IRQ_CHAN_INT_PEND 0x204c #define XDMA_IRQ_USER_VEC_NUM 0x2080 #define XDMA_IRQ_CHAN_VEC_NUM 0x20a0 #define XDMA_IRQ_VEC_SHIFT 8 #endif /* __DMA_XDMA_REGS_H */
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