diff options
Diffstat (limited to 'arch/arm/mach-iop13xx/include/mach/adma.h')
| -rw-r--r-- | arch/arm/mach-iop13xx/include/mach/adma.h | 537 |
1 files changed, 537 insertions, 0 deletions
diff --git a/arch/arm/mach-iop13xx/include/mach/adma.h b/arch/arm/mach-iop13xx/include/mach/adma.h new file mode 100644 index 000000000000..60019c8e6465 --- /dev/null +++ b/arch/arm/mach-iop13xx/include/mach/adma.h @@ -0,0 +1,537 @@ +/* + * Copyright(c) 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 <mach/hardware.h> +#include <asm/hardware/iop_adma.h> + +#define ADMA_ACCR(chan) (chan->mmr_base + 0x0) +#define ADMA_ACSR(chan) (chan->mmr_base + 0x4) +#define ADMA_ADAR(chan) (chan->mmr_base + 0x8) +#define ADMA_IIPCR(chan) (chan->mmr_base + 0x18) +#define ADMA_IIPAR(chan) (chan->mmr_base + 0x1c) +#define ADMA_IIPUAR(chan) (chan->mmr_base + 0x20) +#define ADMA_ANDAR(chan) (chan->mmr_base + 0x24) +#define ADMA_ADCR(chan) (chan->mmr_base + 0x28) +#define ADMA_CARMD(chan) (chan->mmr_base + 0x2c) +#define ADMA_ABCR(chan) (chan->mmr_base + 0x30) +#define ADMA_DLADR(chan) (chan->mmr_base + 0x34) +#define ADMA_DUADR(chan) (chan->mmr_base + 0x38) +#define ADMA_SLAR(src, chan) (chan->mmr_base + (0x3c + (src << 3))) +#define ADMA_SUAR(src, chan) (chan->mmr_base + (0x40 + (src << 3))) + +struct iop13xx_adma_src { + u32 src_addr; + union { + u32 upper_src_addr; + struct { + unsigned int pq_upper_src_addr:24; + unsigned int pq_dmlt:8; + }; + }; +}; + +struct iop13xx_adma_desc_ctrl { + unsigned int int_en:1; + unsigned int xfer_dir:2; + unsigned int src_select:4; + unsigned int zero_result:1; + unsigned int block_fill_en:1; + unsigned int crc_gen_en:1; + unsigned int crc_xfer_dis:1; + unsigned int crc_seed_fetch_dis:1; + unsigned int status_write_back_en:1; + unsigned int endian_swap_en:1; + unsigned int reserved0:2; + unsigned int pq_update_xfer_en:1; + unsigned int dual_xor_en:1; + unsigned int pq_xfer_en:1; + unsigned int p_xfer_dis:1; + unsigned int reserved1:10; + unsigned int relax_order_en:1; + unsigned int no_snoop_en:1; +}; + +struct iop13xx_adma_byte_count { + unsigned int byte_count:24; + unsigned int host_if:3; + unsigned int reserved:2; + unsigned int zero_result_err_q:1; + unsigned int zero_result_err:1; + unsigned int tx_complete:1; +}; + +struct iop13xx_adma_desc_hw { + u32 next_desc; + union { + u32 desc_ctrl; + struct iop13xx_adma_desc_ctrl desc_ctrl_field; + }; + union { + u32 crc_addr; + u32 block_fill_data; + u32 q_dest_addr; + }; + union { + u32 byte_count; + struct iop13xx_adma_byte_count byte_count_field; + }; + union { + u32 dest_addr; + u32 p_dest_addr; + }; + union { + u32 upper_dest_addr; + u32 pq_upper_dest_addr; + }; + struct iop13xx_adma_src src[1]; +}; + +struct iop13xx_adma_desc_dual_xor { + u32 next_desc; + u32 desc_ctrl; + u32 reserved; + u32 byte_count; + u32 h_dest_addr; + u32 h_upper_dest_addr; + u32 src0_addr; + u32 upper_src0_addr; + u32 src1_addr; + u32 upper_src1_addr; + u32 h_src_addr; + u32 h_upper_src_addr; + u32 d_src_addr; + u32 d_upper_src_addr; + u32 d_dest_addr; + u32 d_upper_dest_addr; +}; + +struct iop13xx_adma_desc_pq_update { + u32 next_desc; + u32 desc_ctrl; + u32 reserved; + u32 byte_count; + u32 p_dest_addr; + u32 p_upper_dest_addr; + u32 src0_addr; + u32 upper_src0_addr; + u32 src1_addr; + u32 upper_src1_addr; + u32 p_src_addr; + u32 p_upper_src_addr; + u32 q_src_addr; + struct { + unsigned int q_upper_src_addr:24; + unsigned int q_dmlt:8; + }; + u32 q_dest_addr; + u32 q_upper_dest_addr; +}; + +static inline int iop_adma_get_max_xor(void) +{ + return 16; +} + +static inline u32 iop_chan_get_current_descriptor(struct iop_adma_chan *chan) +{ + return __raw_readl(ADMA_ADAR(chan)); +} + +static inline void iop_chan_set_next_descriptor(struct iop_adma_chan *chan, + u32 next_desc_addr) +{ + __raw_writel(next_desc_addr, ADMA_ANDAR(chan)); +} + +#define ADMA_STATUS_BUSY (1 << 13) + +static inline char iop_chan_is_busy(struct iop_adma_chan *chan) +{ + if (__raw_readl(ADMA_ACSR(chan)) & + ADMA_STATUS_BUSY) + return 1; + else + return 0; +} + +static inline int +iop_chan_get_desc_align(struct iop_adma_chan *chan, int num_slots) +{ + return 1; +} +#define iop_desc_is_aligned(x, y) 1 + +static inline int +iop_chan_memcpy_slot_count(size_t len, int *slots_per_op) +{ + *slots_per_op = 1; + return 1; +} + +#define iop_chan_interrupt_slot_count(s, c) iop_chan_memcpy_slot_count(0, s) + +static inline int +iop_chan_memset_slot_count(size_t len, int *slots_per_op) +{ + *slots_per_op = 1; + return 1; +} + +static inline int +iop_chan_xor_slot_count(size_t len, int src_cnt, int *slots_per_op) +{ + static const char slot_count_table[] = { 1, 2, 2, 2, + 2, 3, 3, 3, + 3, 4, 4, 4, + 4, 5, 5, 5, + }; + *slots_per_op = slot_count_table[src_cnt - 1]; + return *slots_per_op; +} + +#define ADMA_MAX_BYTE_COUNT (16 * 1024 * 1024) +#define IOP_ADMA_MAX_BYTE_COUNT ADMA_MAX_BYTE_COUNT +#define IOP_ADMA_ZERO_SUM_MAX_BYTE_COUNT ADMA_MAX_BYTE_COUNT +#define IOP_ADMA_XOR_MAX_BYTE_COUNT ADMA_MAX_BYTE_COUNT +#define iop_chan_zero_sum_slot_count(l, s, o) iop_chan_xor_slot_count(l, s, o) + +static inline u32 iop_desc_get_dest_addr(struct iop_adma_desc_slot *desc, + struct iop_adma_chan *chan) +{ + struct iop13xx_adma_desc_hw *hw_desc = desc->hw_desc; + return hw_desc->dest_addr; +} + +static inline u32 iop_desc_get_byte_count(struct iop_adma_desc_slot *desc, + struct iop_adma_chan *chan) +{ + struct iop13xx_adma_desc_hw *hw_desc = desc->hw_desc; + return hw_desc->byte_count_field.byte_count; +} + +static inline u32 iop_desc_get_src_addr(struct iop_adma_desc_slot *desc, + struct iop_adma_chan *chan, + int src_idx) +{ + struct iop13xx_adma_desc_hw *hw_desc = desc->hw_desc; + return hw_desc->src[src_idx].src_addr; +} + +static inline u32 iop_desc_get_src_count(struct iop_adma_desc_slot *desc, + struct iop_adma_chan *chan) +{ + struct iop13xx_adma_desc_hw *hw_desc = desc->hw_desc; + return hw_desc->desc_ctrl_field.src_select + 1; +} + +static inline void +iop_desc_init_memcpy(struct iop_adma_desc_slot *desc, unsigned long flags) +{ + struct iop13xx_adma_desc_hw *hw_desc = desc->hw_desc; + union { + u32 value; + struct iop13xx_adma_desc_ctrl field; + } u_desc_ctrl; + + u_desc_ctrl.value = 0; + u_desc_ctrl.field.xfer_dir = 3; /* local to internal bus */ + u_desc_ctrl.field.int_en = flags & DMA_PREP_INTERRUPT; + hw_desc->desc_ctrl = u_desc_ctrl.value; + hw_desc->crc_addr = 0; +} + +static inline void +iop_desc_init_memset(struct iop_adma_desc_slot *desc, unsigned long flags) +{ + struct iop13xx_adma_desc_hw *hw_desc = desc->hw_desc; + union { + u32 value; + struct iop13xx_adma_desc_ctrl field; + } u_desc_ctrl; + + u_desc_ctrl.value = 0; + u_desc_ctrl.field.xfer_dir = 3; /* local to internal bus */ + u_desc_ctrl.field.block_fill_en = 1; + u_desc_ctrl.field.int_en = flags & DMA_PREP_INTERRUPT; + hw_desc->desc_ctrl = u_desc_ctrl.value; + hw_desc->crc_addr = 0; +} + +/* to do: support buffers larger than ADMA_MAX_BYTE_COUNT */ +static inline void +iop_desc_init_xor(struct iop_adma_desc_slot *desc, int src_cnt, + unsigned long flags) +{ + struct iop13xx_adma_desc_hw *hw_desc = desc->hw_desc; + union { + u32 value; + struct iop13xx_adma_desc_ctrl field; + } u_desc_ctrl; + + u_desc_ctrl.value = 0; + u_desc_ctrl.field.src_select = src_cnt - 1; + u_desc_ctrl.field.xfer_dir = 3; /* local to internal bus */ + u_desc_ctrl.field.int_en = flags & DMA_PREP_INTERRUPT; + hw_desc->desc_ctrl = u_desc_ctrl.value; + hw_desc->crc_addr = 0; + +} +#define iop_desc_init_null_xor(d, s, i) iop_desc_init_xor(d, s, i) + +/* to do: support buffers larger than ADMA_MAX_BYTE_COUNT */ +static inline int +iop_desc_init_zero_sum(struct iop_adma_desc_slot *desc, int src_cnt, + unsigned long flags) +{ + struct iop13xx_adma_desc_hw *hw_desc = desc->hw_desc; + union { + u32 value; + struct iop13xx_adma_desc_ctrl field; + } u_desc_ctrl; + + u_desc_ctrl.value = 0; + u_desc_ctrl.field.src_select = src_cnt - 1; + u_desc_ctrl.field.xfer_dir = 3; /* local to internal bus */ + u_desc_ctrl.field.zero_result = 1; + u_desc_ctrl.field.status_write_back_en = 1; + u_desc_ctrl.field.int_en = flags & DMA_PREP_INTERRUPT; + hw_desc->desc_ctrl = u_desc_ctrl.value; + hw_desc->crc_addr = 0; + + return 1; +} + +static inline void iop_desc_set_byte_count(struct iop_adma_desc_slot *desc, + struct iop_adma_chan *chan, + u32 byte_count) +{ + struct iop13xx_adma_desc_hw *hw_desc = desc->hw_desc; + hw_desc->byte_count = byte_count; +} + +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 iop13xx_adma_desc_hw *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) +{ + struct iop13xx_adma_desc_hw *hw_desc = desc->hw_desc; + hw_desc->dest_addr = addr; + hw_desc->upper_dest_addr = 0; +} + +static inline void iop_desc_set_memcpy_src_addr(struct iop_adma_desc_slot *desc, + dma_addr_t addr) +{ + struct iop13xx_adma_desc_hw *hw_desc = desc->hw_desc; + hw_desc->src[0].src_addr = addr; + hw_desc->src[0].upper_src_addr = 0; +} + +static inline void iop_desc_set_xor_src_addr(struct iop_adma_desc_slot *desc, + int src_idx, dma_addr_t addr) +{ + int slot_cnt = desc->slot_cnt, slots_per_op = desc->slots_per_op; + struct iop13xx_adma_desc_hw *hw_desc = desc->hw_desc, *iter; + int i = 0; + + do { + iter = iop_hw_desc_slot_idx(hw_desc, i); + iter->src[src_idx].src_addr = addr; + iter->src[src_idx].upper_src_addr = 0; + slot_cnt -= slots_per_op; + if (slot_cnt) { + i += slots_per_op; + addr += IOP_ADMA_XOR_MAX_BYTE_COUNT; + } + } while (slot_cnt); +} + +static inline void +iop_desc_init_interrupt(struct iop_adma_desc_slot *desc, + struct iop_adma_chan *chan) +{ + iop_desc_init_memcpy(desc, 1); + iop_desc_set_byte_count(desc, chan, 0); + iop_desc_set_dest_addr(desc, chan, 0); + iop_desc_set_memcpy_src_addr(desc, 0); +} + +#define iop_desc_set_zero_sum_src_addr iop_desc_set_xor_src_addr + +static inline void iop_desc_set_next_desc(struct iop_adma_desc_slot *desc, + u32 next_desc_addr) +{ + struct iop13xx_adma_desc_hw *hw_desc = desc->hw_desc; + BUG_ON(hw_desc->next_desc); + hw_desc->next_desc = next_desc_addr; +} + +static inline u32 iop_desc_get_next_desc(struct iop_adma_desc_slot *desc) +{ + struct iop13xx_adma_desc_hw *hw_desc = desc->hw_desc; + return hw_desc->next_desc; +} + +static inline void iop_desc_clear_next_desc(struct iop_adma_desc_slot *desc) +{ + struct iop13xx_adma_desc_hw *hw_desc = desc->hw_desc; + hw_desc->next_desc = 0; +} + +static inline void iop_desc_set_block_fill_val(struct iop_adma_desc_slot *desc, + u32 val) +{ + struct iop13xx_adma_desc_hw *hw_desc = desc->hw_desc; + hw_desc->block_fill_data = val; +} + +static inline int iop_desc_get_zero_result(struct iop_adma_desc_slot *desc) +{ + struct iop13xx_adma_desc_hw *hw_desc = desc->hw_desc; + struct iop13xx_adma_desc_ctrl desc_ctrl = hw_desc->desc_ctrl_field; + struct iop13xx_adma_byte_count byte_count = hw_desc->byte_count_field; + + BUG_ON(!(byte_count.tx_complete && desc_ctrl.zero_result)); + + if (desc_ctrl.pq_xfer_en) + return byte_count.zero_result_err_q; + else + return byte_count.zero_result_err; +} + +static inline void iop_chan_append(struct iop_adma_chan *chan) +{ + u32 adma_accr; + + adma_accr = __raw_readl(ADMA_ACCR(chan)); + adma_accr |= 0x2; + __raw_writel(adma_accr, ADMA_ACCR(chan)); +} + +static inline u32 iop_chan_get_status(struct iop_adma_chan *chan) +{ + return __raw_readl(ADMA_ACSR(chan)); +} + +static inline void iop_chan_disable(struct iop_adma_chan *chan) +{ + u32 adma_chan_ctrl = __raw_readl(ADMA_ACCR(chan)); + adma_chan_ctrl &= ~0x1; + __raw_writel(adma_chan_ctrl, ADMA_ACCR(chan)); +} + +static inline void iop_chan_enable(struct iop_adma_chan *chan) +{ + u32 adma_chan_ctrl; + + adma_chan_ctrl = __raw_readl(ADMA_ACCR(chan)); + adma_chan_ctrl |= 0x1; + __raw_writel(adma_chan_ctrl, ADMA_ACCR(chan)); +} + +static inline void iop_adma_device_clear_eot_status(struct iop_adma_chan *chan) +{ + u32 status = __raw_readl(ADMA_ACSR(chan)); + status &= (1 << 12); + __raw_writel(status, ADMA_ACSR(chan)); +} + +static inline void iop_adma_device_clear_eoc_status(struct iop_adma_chan *chan) +{ + u32 status = __raw_readl(ADMA_ACSR(chan)); + status &= (1 << 11); + __raw_writel(status, ADMA_ACSR(chan)); +} + +static inline void iop_adma_device_clear_err_status(struct iop_adma_chan *chan) +{ + u32 status = __raw_readl(ADMA_ACSR(chan)); + status &= (1 << 9) | (1 << 5) | (1 << 4) | (1 << 3); + __raw_writel(status, ADMA_ACSR(chan)); +} + +static inline int +iop_is_err_int_parity(unsigned long status, struct iop_adma_chan *chan) +{ + return test_bit(9, &status); +} + +static inline int +iop_is_err_mcu_abort(unsigned long status, struct iop_adma_chan *chan) +{ + return test_bit(5, &status); +} + +static inline int +iop_is_err_int_tabort(unsigned long status, struct iop_adma_chan *chan) +{ + return test_bit(4, &status); +} + +static inline int +iop_is_err_int_mabort(unsigned long status, struct iop_adma_chan *chan) +{ + return test_bit(3, &status); +} + +static inline int +iop_is_err_pci_tabort(unsigned long status, struct iop_adma_chan *chan) +{ + return 0; +} + +static inline int +iop_is_err_pci_mabort(unsigned long status, struct iop_adma_chan *chan) +{ + return 0; +} + +static inline int +iop_is_err_split_tx(unsigned long status, struct iop_adma_chan *chan) +{ + return 0; +} + +#endif /* _ADMA_H */ |