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Diffstat (limited to 'include/asm-arm/hardware/iop3xx-adma.h')
| -rw-r--r-- | include/asm-arm/hardware/iop3xx-adma.h | 892 |
1 files changed, 892 insertions, 0 deletions
diff --git a/include/asm-arm/hardware/iop3xx-adma.h b/include/asm-arm/hardware/iop3xx-adma.h new file mode 100644 index 000000000000..10834b54f681 --- /dev/null +++ b/include/asm-arm/hardware/iop3xx-adma.h @@ -0,0 +1,892 @@ +/* + * Copyright © 2006, Intel Corporation. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms and conditions of the GNU General Public License, + * version 2, as published by the Free Software Foundation. + * + * This program is distributed in the hope it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for + * more details. + * + * You should have received a copy of the GNU General Public License along with + * this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA. + * + */ +#ifndef _ADMA_H +#define _ADMA_H +#include <linux/types.h> +#include <linux/io.h> +#include <asm/hardware.h> +#include <asm/hardware/iop_adma.h> + +/* Memory copy units */ +#define DMA_CCR(chan) (chan->mmr_base + 0x0) +#define DMA_CSR(chan) (chan->mmr_base + 0x4) +#define DMA_DAR(chan) (chan->mmr_base + 0xc) +#define DMA_NDAR(chan) (chan->mmr_base + 0x10) +#define DMA_PADR(chan) (chan->mmr_base + 0x14) +#define DMA_PUADR(chan) (chan->mmr_base + 0x18) +#define DMA_LADR(chan) (chan->mmr_base + 0x1c) +#define DMA_BCR(chan) (chan->mmr_base + 0x20) +#define DMA_DCR(chan) (chan->mmr_base + 0x24) + +/* Application accelerator unit */ +#define AAU_ACR(chan) (chan->mmr_base + 0x0) +#define AAU_ASR(chan) (chan->mmr_base + 0x4) +#define AAU_ADAR(chan) (chan->mmr_base + 0x8) +#define AAU_ANDAR(chan) (chan->mmr_base + 0xc) +#define AAU_SAR(src, chan) (chan->mmr_base + (0x10 + ((src) << 2))) +#define AAU_DAR(chan) (chan->mmr_base + 0x20) +#define AAU_ABCR(chan) (chan->mmr_base + 0x24) +#define AAU_ADCR(chan) (chan->mmr_base + 0x28) +#define AAU_SAR_EDCR(src_edc) (chan->mmr_base + (0x02c + ((src_edc-4) << 2))) +#define AAU_EDCR0_IDX 8 +#define AAU_EDCR1_IDX 17 +#define AAU_EDCR2_IDX 26 + +#define DMA0_ID 0 +#define DMA1_ID 1 +#define AAU_ID 2 + +struct iop3xx_aau_desc_ctrl { + unsigned int int_en:1; + unsigned int blk1_cmd_ctrl:3; + unsigned int blk2_cmd_ctrl:3; + unsigned int blk3_cmd_ctrl:3; + unsigned int blk4_cmd_ctrl:3; + unsigned int blk5_cmd_ctrl:3; + unsigned int blk6_cmd_ctrl:3; + unsigned int blk7_cmd_ctrl:3; + unsigned int blk8_cmd_ctrl:3; + unsigned int blk_ctrl:2; + unsigned int dual_xor_en:1; + unsigned int tx_complete:1; + unsigned int zero_result_err:1; + unsigned int zero_result_en:1; + unsigned int dest_write_en:1; +}; + +struct iop3xx_aau_e_desc_ctrl { + unsigned int reserved:1; + unsigned int blk1_cmd_ctrl:3; + unsigned int blk2_cmd_ctrl:3; + unsigned int blk3_cmd_ctrl:3; + unsigned int blk4_cmd_ctrl:3; + unsigned int blk5_cmd_ctrl:3; + unsigned int blk6_cmd_ctrl:3; + unsigned int blk7_cmd_ctrl:3; + unsigned int blk8_cmd_ctrl:3; + unsigned int reserved2:7; +}; + +struct iop3xx_dma_desc_ctrl { + unsigned int pci_transaction:4; + unsigned int int_en:1; + unsigned int dac_cycle_en:1; + unsigned int mem_to_mem_en:1; + unsigned int crc_data_tx_en:1; + unsigned int crc_gen_en:1; + unsigned int crc_seed_dis:1; + unsigned int reserved:21; + unsigned int crc_tx_complete:1; +}; + +struct iop3xx_desc_dma { + u32 next_desc; + union { + u32 pci_src_addr; + u32 pci_dest_addr; + u32 src_addr; + }; + union { + u32 upper_pci_src_addr; + u32 upper_pci_dest_addr; + }; + union { + u32 local_pci_src_addr; + u32 local_pci_dest_addr; + u32 dest_addr; + }; + u32 byte_count; + union { + u32 desc_ctrl; + struct iop3xx_dma_desc_ctrl desc_ctrl_field; + }; + u32 crc_addr; +}; + +struct iop3xx_desc_aau { + u32 next_desc; + u32 src[4]; + u32 dest_addr; + u32 byte_count; + union { + u32 desc_ctrl; + struct iop3xx_aau_desc_ctrl desc_ctrl_field; + }; + union { + u32 src_addr; + u32 e_desc_ctrl; + struct iop3xx_aau_e_desc_ctrl e_desc_ctrl_field; + } src_edc[31]; +}; + +struct iop3xx_aau_gfmr { + unsigned int gfmr1:8; + unsigned int gfmr2:8; + unsigned int gfmr3:8; + unsigned int gfmr4:8; +}; + +struct iop3xx_desc_pq_xor { + u32 next_desc; + u32 src[3]; + union { + u32 data_mult1; + struct iop3xx_aau_gfmr data_mult1_field; + }; + u32 dest_addr; + u32 byte_count; + union { + u32 desc_ctrl; + struct iop3xx_aau_desc_ctrl desc_ctrl_field; + }; + union { + u32 src_addr; + u32 e_desc_ctrl; + struct iop3xx_aau_e_desc_ctrl e_desc_ctrl_field; + u32 data_multiplier; + struct iop3xx_aau_gfmr data_mult_field; + u32 reserved; + } src_edc_gfmr[19]; +}; + +struct iop3xx_desc_dual_xor { + u32 next_desc; + u32 src0_addr; + u32 src1_addr; + u32 h_src_addr; + u32 d_src_addr; + u32 h_dest_addr; + u32 byte_count; + union { + u32 desc_ctrl; + struct iop3xx_aau_desc_ctrl desc_ctrl_field; + }; + u32 d_dest_addr; +}; + +union iop3xx_desc { + struct iop3xx_desc_aau *aau; + struct iop3xx_desc_dma *dma; + struct iop3xx_desc_pq_xor *pq_xor; + struct iop3xx_desc_dual_xor *dual_xor; + void *ptr; +}; + +static inline int iop_adma_get_max_xor(void) +{ + return 32; +} + +static inline u32 iop_chan_get_current_descriptor(struct iop_adma_chan *chan) +{ + int id = chan->device->id; + + switch (id) { + case DMA0_ID: + case DMA1_ID: + return __raw_readl(DMA_DAR(chan)); + case AAU_ID: + return __raw_readl(AAU_ADAR(chan)); + default: + BUG(); + } + return 0; +} + +static inline void iop_chan_set_next_descriptor(struct iop_adma_chan *chan, + u32 next_desc_addr) +{ + int id = chan->device->id; + + switch (id) { + case DMA0_ID: + case DMA1_ID: + __raw_writel(next_desc_addr, DMA_NDAR(chan)); + break; + case AAU_ID: + __raw_writel(next_desc_addr, AAU_ANDAR(chan)); + break; + } + +} + +#define IOP_ADMA_STATUS_BUSY (1 << 10) +#define IOP_ADMA_ZERO_SUM_MAX_BYTE_COUNT (1024) +#define IOP_ADMA_XOR_MAX_BYTE_COUNT (16 * 1024 * 1024) +#define IOP_ADMA_MAX_BYTE_COUNT (16 * 1024 * 1024) + +static inline int iop_chan_is_busy(struct iop_adma_chan *chan) +{ + u32 status = __raw_readl(DMA_CSR(chan)); + return (status & IOP_ADMA_STATUS_BUSY) ? 1 : 0; +} + +static inline int iop_desc_is_aligned(struct iop_adma_desc_slot *desc, + int num_slots) +{ + /* num_slots will only ever be 1, 2, 4, or 8 */ + return (desc->idx & (num_slots - 1)) ? 0 : 1; +} + +/* to do: support large (i.e. > hw max) buffer sizes */ +static inline int iop_chan_memcpy_slot_count(size_t len, int *slots_per_op) +{ + *slots_per_op = 1; + return 1; +} + +/* to do: support large (i.e. > hw max) buffer sizes */ +static inline int iop_chan_memset_slot_count(size_t len, int *slots_per_op) +{ + *slots_per_op = 1; + return 1; +} + +static inline int iop3xx_aau_xor_slot_count(size_t len, int src_cnt, + int *slots_per_op) +{ + const static int slot_count_table[] = { 0, + 1, 1, 1, 1, /* 01 - 04 */ + 2, 2, 2, 2, /* 05 - 08 */ + 4, 4, 4, 4, /* 09 - 12 */ + 4, 4, 4, 4, /* 13 - 16 */ + 8, 8, 8, 8, /* 17 - 20 */ + 8, 8, 8, 8, /* 21 - 24 */ + 8, 8, 8, 8, /* 25 - 28 */ + 8, 8, 8, 8, /* 29 - 32 */ + }; + *slots_per_op = slot_count_table[src_cnt]; + return *slots_per_op; +} + +static inline int +iop_chan_interrupt_slot_count(int *slots_per_op, struct iop_adma_chan *chan) +{ + switch (chan->device->id) { + case DMA0_ID: + case DMA1_ID: + return iop_chan_memcpy_slot_count(0, slots_per_op); + case AAU_ID: + return iop3xx_aau_xor_slot_count(0, 2, slots_per_op); + default: + BUG(); + } + return 0; +} + +static inline int iop_chan_xor_slot_count(size_t len, int src_cnt, + int *slots_per_op) +{ + int slot_cnt = iop3xx_aau_xor_slot_count(len, src_cnt, slots_per_op); + + if (len <= IOP_ADMA_XOR_MAX_BYTE_COUNT) + return slot_cnt; + + len -= IOP_ADMA_XOR_MAX_BYTE_COUNT; + while (len > IOP_ADMA_XOR_MAX_BYTE_COUNT) { + len -= IOP_ADMA_XOR_MAX_BYTE_COUNT; + slot_cnt += *slots_per_op; + } + + if (len) + slot_cnt += *slots_per_op; + + return slot_cnt; +} + +/* zero sum on iop3xx is limited to 1k at a time so it requires multiple + * descriptors + */ +static inline int iop_chan_zero_sum_slot_count(size_t len, int src_cnt, + int *slots_per_op) +{ + int slot_cnt = iop3xx_aau_xor_slot_count(len, src_cnt, slots_per_op); + + if (len <= IOP_ADMA_ZERO_SUM_MAX_BYTE_COUNT) + return slot_cnt; + + len -= IOP_ADMA_ZERO_SUM_MAX_BYTE_COUNT; + while (len > IOP_ADMA_ZERO_SUM_MAX_BYTE_COUNT) { + len -= IOP_ADMA_ZERO_SUM_MAX_BYTE_COUNT; + slot_cnt += *slots_per_op; + } + + if (len) + slot_cnt += *slots_per_op; + + return slot_cnt; +} + +static inline u32 iop_desc_get_dest_addr(struct iop_adma_desc_slot *desc, + struct iop_adma_chan *chan) +{ + union iop3xx_desc hw_desc = { .ptr = desc->hw_desc, }; + + switch (chan->device->id) { + case DMA0_ID: + case DMA1_ID: + return hw_desc.dma->dest_addr; + case AAU_ID: + return hw_desc.aau->dest_addr; + default: + BUG(); + } + return 0; +} + +static inline u32 iop_desc_get_byte_count(struct iop_adma_desc_slot *desc, + struct iop_adma_chan *chan) +{ + union iop3xx_desc hw_desc = { .ptr = desc->hw_desc, }; + + switch (chan->device->id) { + case DMA0_ID: + case DMA1_ID: + return hw_desc.dma->byte_count; + case AAU_ID: + return hw_desc.aau->byte_count; + default: + BUG(); + } + return 0; +} + +/* translate the src_idx to a descriptor word index */ +static inline int __desc_idx(int src_idx) +{ + const static int desc_idx_table[] = { 0, 0, 0, 0, + 0, 1, 2, 3, + 5, 6, 7, 8, + 9, 10, 11, 12, + 14, 15, 16, 17, + 18, 19, 20, 21, + 23, 24, 25, 26, + 27, 28, 29, 30, + }; + + return desc_idx_table[src_idx]; +} + +static inline u32 iop_desc_get_src_addr(struct iop_adma_desc_slot *desc, + struct iop_adma_chan *chan, + int src_idx) +{ + union iop3xx_desc hw_desc = { .ptr = desc->hw_desc, }; + + switch (chan->device->id) { + case DMA0_ID: + case DMA1_ID: + return hw_desc.dma->src_addr; + case AAU_ID: + break; + default: + BUG(); + } + + if (src_idx < 4) + return hw_desc.aau->src[src_idx]; + else + return hw_desc.aau->src_edc[__desc_idx(src_idx)].src_addr; +} + +static inline void iop3xx_aau_desc_set_src_addr(struct iop3xx_desc_aau *hw_desc, + int src_idx, dma_addr_t addr) +{ + if (src_idx < 4) + hw_desc->src[src_idx] = addr; + else + hw_desc->src_edc[__desc_idx(src_idx)].src_addr = addr; +} + +static inline void +iop_desc_init_memcpy(struct iop_adma_desc_slot *desc, int int_en) +{ + struct iop3xx_desc_dma *hw_desc = desc->hw_desc; + union { + u32 value; + struct iop3xx_dma_desc_ctrl field; + } u_desc_ctrl; + + u_desc_ctrl.value = 0; + u_desc_ctrl.field.mem_to_mem_en = 1; + u_desc_ctrl.field.pci_transaction = 0xe; /* memory read block */ + u_desc_ctrl.field.int_en = int_en; + hw_desc->desc_ctrl = u_desc_ctrl.value; + hw_desc->upper_pci_src_addr = 0; + hw_desc->crc_addr = 0; +} + +static inline void +iop_desc_init_memset(struct iop_adma_desc_slot *desc, int int_en) +{ + struct iop3xx_desc_aau *hw_desc = desc->hw_desc; + union { + u32 value; + struct iop3xx_aau_desc_ctrl field; + } u_desc_ctrl; + + u_desc_ctrl.value = 0; + u_desc_ctrl.field.blk1_cmd_ctrl = 0x2; /* memory block fill */ + u_desc_ctrl.field.dest_write_en = 1; + u_desc_ctrl.field.int_en = int_en; + hw_desc->desc_ctrl = u_desc_ctrl.value; +} + +static inline u32 +iop3xx_desc_init_xor(struct iop3xx_desc_aau *hw_desc, int src_cnt, int int_en) +{ + int i, shift; + u32 edcr; + union { + u32 value; + struct iop3xx_aau_desc_ctrl field; + } u_desc_ctrl; + + u_desc_ctrl.value = 0; + switch (src_cnt) { + case 25 ... 32: + u_desc_ctrl.field.blk_ctrl = 0x3; /* use EDCR[2:0] */ + edcr = 0; + shift = 1; + for (i = 24; i < src_cnt; i++) { + edcr |= (1 << shift); + shift += 3; + } + hw_desc->src_edc[AAU_EDCR2_IDX].e_desc_ctrl = edcr; + src_cnt = 24; + /* fall through */ + case 17 ... 24: + if (!u_desc_ctrl.field.blk_ctrl) { + hw_desc->src_edc[AAU_EDCR2_IDX].e_desc_ctrl = 0; + u_desc_ctrl.field.blk_ctrl = 0x3; /* use EDCR[2:0] */ + } + edcr = 0; + shift = 1; + for (i = 16; i < src_cnt; i++) { + edcr |= (1 << shift); + shift += 3; + } + hw_desc->src_edc[AAU_EDCR1_IDX].e_desc_ctrl = edcr; + src_cnt = 16; + /* fall through */ + case 9 ... 16: + if (!u_desc_ctrl.field.blk_ctrl) + u_desc_ctrl.field.blk_ctrl = 0x2; /* use EDCR0 */ + edcr = 0; + shift = 1; + for (i = 8; i < src_cnt; i++) { + edcr |= (1 << shift); + shift += 3; + } + hw_desc->src_edc[AAU_EDCR0_IDX].e_desc_ctrl = edcr; + src_cnt = 8; + /* fall through */ + case 2 ... 8: + shift = 1; + for (i = 0; i < src_cnt; i++) { + u_desc_ctrl.value |= (1 << shift); + shift += 3; + } + + if (!u_desc_ctrl.field.blk_ctrl && src_cnt > 4) + u_desc_ctrl.field.blk_ctrl = 0x1; /* use mini-desc */ + } + + u_desc_ctrl.field.dest_write_en = 1; + u_desc_ctrl.field.blk1_cmd_ctrl = 0x7; /* direct fill */ + u_desc_ctrl.field.int_en = int_en; + hw_desc->desc_ctrl = u_desc_ctrl.value; + + return u_desc_ctrl.value; +} + +static inline void +iop_desc_init_xor(struct iop_adma_desc_slot *desc, int src_cnt, int int_en) +{ + iop3xx_desc_init_xor(desc->hw_desc, src_cnt, int_en); +} + +/* return the number of operations */ +static inline int +iop_desc_init_zero_sum(struct iop_adma_desc_slot *desc, int src_cnt, int int_en) +{ + int slot_cnt = desc->slot_cnt, slots_per_op = desc->slots_per_op; + struct iop3xx_desc_aau *hw_desc, *prev_hw_desc, *iter; + union { + u32 value; + struct iop3xx_aau_desc_ctrl field; + } u_desc_ctrl; + int i, j; + + hw_desc = desc->hw_desc; + + for (i = 0, j = 0; (slot_cnt -= slots_per_op) >= 0; + i += slots_per_op, j++) { + iter = iop_hw_desc_slot_idx(hw_desc, i); + u_desc_ctrl.value = iop3xx_desc_init_xor(iter, src_cnt, int_en); + u_desc_ctrl.field.dest_write_en = 0; + u_desc_ctrl.field.zero_result_en = 1; + u_desc_ctrl.field.int_en = int_en; + iter->desc_ctrl = u_desc_ctrl.value; + + /* for the subsequent descriptors preserve the store queue + * and chain them together + */ + if (i) { + prev_hw_desc = + iop_hw_desc_slot_idx(hw_desc, i - slots_per_op); + prev_hw_desc->next_desc = + (u32) (desc->async_tx.phys + (i << 5)); + } + } + + return j; +} + +static inline void +iop_desc_init_null_xor(struct iop_adma_desc_slot *desc, int src_cnt, int int_en) +{ + struct iop3xx_desc_aau *hw_desc = desc->hw_desc; + union { + u32 value; + struct iop3xx_aau_desc_ctrl field; + } u_desc_ctrl; + + u_desc_ctrl.value = 0; + switch (src_cnt) { + case 25 ... 32: + u_desc_ctrl.field.blk_ctrl = 0x3; /* use EDCR[2:0] */ + hw_desc->src_edc[AAU_EDCR2_IDX].e_desc_ctrl = 0; + /* fall through */ + case 17 ... 24: + if (!u_desc_ctrl.field.blk_ctrl) { + hw_desc->src_edc[AAU_EDCR2_IDX].e_desc_ctrl = 0; + u_desc_ctrl.field.blk_ctrl = 0x3; /* use EDCR[2:0] */ + } + hw_desc->src_edc[AAU_EDCR1_IDX].e_desc_ctrl = 0; + /* fall through */ + case 9 ... 16: + if (!u_desc_ctrl.field.blk_ctrl) + u_desc_ctrl.field.blk_ctrl = 0x2; /* use EDCR0 */ + hw_desc->src_edc[AAU_EDCR0_IDX].e_desc_ctrl = 0; + /* fall through */ + case 1 ... 8: + if (!u_desc_ctrl.field.blk_ctrl && src_cnt > 4) + u_desc_ctrl.field.blk_ctrl = 0x1; /* use mini-desc */ + } + + u_desc_ctrl.field.dest_write_en = 0; + u_desc_ctrl.field.int_en = int_en; + hw_desc->desc_ctrl = u_desc_ctrl.value; +} + +static inline void iop_desc_set_byte_count(struct iop_adma_desc_slot *desc, + struct iop_adma_chan *chan, + u32 byte_count) +{ + union iop3xx_desc hw_desc = { .ptr = desc->hw_desc, }; + + switch (chan->device->id) { + case DMA0_ID: + case DMA1_ID: + hw_desc.dma->byte_count = byte_count; + break; + case AAU_ID: + hw_desc.aau->byte_count = byte_count; + break; + default: + BUG(); + } +} + +static inline void +iop_desc_init_interrupt(struct iop_adma_desc_slot *desc, + struct iop_adma_chan *chan) +{ + union iop3xx_desc hw_desc = { .ptr = desc->hw_desc, }; + + switch (chan->device->id) { + case DMA0_ID: + case DMA1_ID: + iop_desc_init_memcpy(desc, 1); + hw_desc.dma->byte_count = 0; + hw_desc.dma->dest_addr = 0; + hw_desc.dma->src_addr = 0; + break; + case AAU_ID: + iop_desc_init_null_xor(desc, 2, 1); + hw_desc.aau->byte_count = 0; + hw_desc.aau->dest_addr = 0; + hw_desc.aau->src[0] = 0; + hw_desc.aau->src[1] = 0; + break; + default: + BUG(); + } +} + +static inline void +iop_desc_set_zero_sum_byte_count(struct iop_adma_desc_slot *desc, u32 len) +{ + int slots_per_op = desc->slots_per_op; + struct iop3xx_desc_aau *hw_desc = desc->hw_desc, *iter; + int i = 0; + + if (len <= IOP_ADMA_ZERO_SUM_MAX_BYTE_COUNT) { + hw_desc->byte_count = len; + } else { + do { + iter = iop_hw_desc_slot_idx(hw_desc, i); + iter->byte_count = IOP_ADMA_ZERO_SUM_MAX_BYTE_COUNT; + len -= IOP_ADMA_ZERO_SUM_MAX_BYTE_COUNT; + i += slots_per_op; + } while (len > IOP_ADMA_ZERO_SUM_MAX_BYTE_COUNT); + + if (len) { + iter = iop_hw_desc_slot_idx(hw_desc, i); + iter->byte_count = len; + } + } +} + +static inline void iop_desc_set_dest_addr(struct iop_adma_desc_slot *desc, + struct iop_adma_chan *chan, + dma_addr_t addr) +{ + union iop3xx_desc hw_desc = { .ptr = desc->hw_desc, }; + + switch (chan->device->id) { + case DMA0_ID: + case DMA1_ID: + hw_desc.dma->dest_addr = addr; + break; + case AAU_ID: + hw_desc.aau->dest_addr = addr; + break; + default: + BUG(); + } +} + +static inline void iop_desc_set_memcpy_src_addr(struct iop_adma_desc_slot *desc, + dma_addr_t addr) +{ + struct iop3xx_desc_dma *hw_desc = desc->hw_desc; + hw_desc->src_addr = addr; +} + +static inline void +iop_desc_set_zero_sum_src_addr(struct iop_adma_desc_slot *desc, int src_idx, + dma_addr_t addr) +{ + + struct iop3xx_desc_aau *hw_desc = desc->hw_desc, *iter; + int slot_cnt = desc->slot_cnt, slots_per_op = desc->slots_per_op; + int i; + + for (i = 0; (slot_cnt -= slots_per_op) >= 0; + i += slots_per_op, addr += IOP_ADMA_ZERO_SUM_MAX_BYTE_COUNT) { + iter = iop_hw_desc_slot_idx(hw_desc, i); + iop3xx_aau_desc_set_src_addr(iter, src_idx, addr); + } +} + +static inline void iop_desc_set_xor_src_addr(struct iop_adma_desc_slot *desc, + int src_idx, dma_addr_t addr) +{ + + struct iop3xx_desc_aau *hw_desc = desc->hw_desc, *iter; + int slot_cnt = desc->slot_cnt, slots_per_op = desc->slots_per_op; + int i; + + for (i = 0; (slot_cnt -= slots_per_op) >= 0; + i += slots_per_op, addr += IOP_ADMA_XOR_MAX_BYTE_COUNT) { + iter = iop_hw_desc_slot_idx(hw_desc, i); + iop3xx_aau_desc_set_src_addr(iter, src_idx, addr); + } +} + +static inline void iop_desc_set_next_desc(struct iop_adma_desc_slot *desc, + u32 next_desc_addr) +{ + /* hw_desc->next_desc is the same location for all channels */ + union iop3xx_desc hw_desc = { .ptr = desc->hw_desc, }; + BUG_ON(hw_desc.dma->next_desc); + hw_desc.dma->next_desc = next_desc_addr; +} + +static inline u32 iop_desc_get_next_desc(struct iop_adma_desc_slot *desc) +{ + /* hw_desc->next_desc is the same location for all channels */ + union iop3xx_desc hw_desc = { .ptr = desc->hw_desc, }; + return hw_desc.dma->next_desc; +} + +static inline void iop_desc_clear_next_desc(struct iop_adma_desc_slot *desc) +{ + /* hw_desc->next_desc is the same location for all channels */ + union iop3xx_desc hw_desc = { .ptr = desc->hw_desc, }; + hw_desc.dma->next_desc = 0; +} + +static inline void iop_desc_set_block_fill_val(struct iop_adma_desc_slot *desc, + u32 val) +{ + struct iop3xx_desc_aau *hw_desc = desc->hw_desc; + hw_desc->src[0] = val; +} + +static inline int iop_desc_get_zero_result(struct iop_adma_desc_slot *desc) +{ + struct iop3xx_desc_aau *hw_desc = desc->hw_desc; + struct iop3xx_aau_desc_ctrl desc_ctrl = hw_desc->desc_ctrl_field; + + BUG_ON(!(desc_ctrl.tx_complete && desc_ctrl.zero_result_en)); + return desc_ctrl.zero_result_err; +} + +static inline void iop_chan_append(struct iop_adma_chan *chan) +{ + u32 dma_chan_ctrl; + /* workaround dropped interrupts on 3xx */ + mod_timer(&chan->cleanup_watchdog, jiffies + msecs_to_jiffies(3)); + + dma_chan_ctrl = __raw_readl(DMA_CCR(chan)); + dma_chan_ctrl |= 0x2; + __raw_writel(dma_chan_ctrl, DMA_CCR(chan)); +} + +static inline void iop_chan_idle(int busy, struct iop_adma_chan *chan) +{ + if (!busy) + del_timer(&chan->cleanup_watchdog); +} + +static inline u32 iop_chan_get_status(struct iop_adma_chan *chan) +{ + return __raw_readl(DMA_CSR(chan)); +} + +static inline void iop_chan_disable(struct iop_adma_chan *chan) +{ + u32 dma_chan_ctrl = __raw_readl(DMA_CCR(chan)); + dma_chan_ctrl &= ~1; + __raw_writel(dma_chan_ctrl, DMA_CCR(chan)); +} + +static inline void iop_chan_enable(struct iop_adma_chan *chan) +{ + u32 dma_chan_ctrl = __raw_readl(DMA_CCR(chan)); + + dma_chan_ctrl |= 1; + __raw_writel(dma_chan_ctrl, DMA_CCR(chan)); +} + +static inline void iop_adma_device_clear_eot_status(struct iop_adma_chan *chan) +{ + u32 status = __raw_readl(DMA_CSR(chan)); + status &= (1 << 9); + __raw_writel(status, DMA_CSR(chan)); +} + +static inline void iop_adma_device_clear_eoc_status(struct iop_adma_chan *chan) +{ + u32 status = __raw_readl(DMA_CSR(chan)); + status &= (1 << 8); + __raw_writel(status, DMA_CSR(chan)); +} + +static inline void iop_adma_device_clear_err_status(struct iop_adma_chan *chan) +{ + u32 status = __raw_readl(DMA_CSR(chan)); + + switch (chan->device->id) { + case DMA0_ID: + case DMA1_ID: + status &= (1 << 5) | (1 << 3) | (1 << 2) | (1 << 1); + break; + case AAU_ID: + status &= (1 << 5); + break; + default: + BUG(); + } + + __raw_writel(status, DMA_CSR(chan)); +} + +static inline int +iop_is_err_int_parity(unsigned long status, struct iop_adma_chan *chan) +{ + return 0; +} + +static inline int +iop_is_err_mcu_abort(unsigned long status, struct iop_adma_chan *chan) +{ + return 0; +} + +static inline int +iop_is_err_int_tabort(unsigned long status, struct iop_adma_chan *chan) +{ + return 0; +} + +static inline int +iop_is_err_int_mabort(unsigned long status, struct iop_adma_chan *chan) +{ + return test_bit(5, &status); +} + +static inline int +iop_is_err_pci_tabort(unsigned long status, struct iop_adma_chan *chan) +{ + switch (chan->device->id) { + case DMA0_ID: + case DMA1_ID: + return test_bit(2, &status); + default: + return 0; + } +} + +static inline int +iop_is_err_pci_mabort(unsigned long status, struct iop_adma_chan *chan) +{ + switch (chan->device->id) { + case DMA0_ID: + case DMA1_ID: + return test_bit(3, &status); + default: + return 0; + } +} + +static inline int +iop_is_err_split_tx(unsigned long status, struct iop_adma_chan *chan) +{ + switch (chan->device->id) { + case DMA0_ID: + case DMA1_ID: + return test_bit(1, &status); + default: + return 0; + } +} +#endif /* _ADMA_H */ |