include/asm-arm/arch-iop13xx/adma.h - kernel/msm-4.19 - Gitiles

 /*
  * 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 <asm/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)
 {
 	int num_slots;
 	/* slots_to_find = 1 for basic descriptor + 1 per 4 sources above 1
 	 * (1 source => 8 bytes) (1 slot => 32 bytes)
 	 */
 	num_slots = 1 + (((src_cnt - 1) << 3) >> 5);
 	if (((src_cnt - 1) << 3) & 0x1f)
 		num_slots++;

 	*slots_per_op = num_slots;

 	return num_slots;
 }

 #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 */
	/*
	* 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 <asm/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)
	{
	int num_slots;
	/* slots_to_find = 1 for basic descriptor + 1 per 4 sources above 1
	* (1 source => 8 bytes) (1 slot => 32 bytes)
	*/
	num_slots = 1 + (((src_cnt - 1) << 3) >> 5);
	if (((src_cnt - 1) << 3) & 0x1f)
	num_slots++;

	*slots_per_op = num_slots;

	return num_slots;
	}

	#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 */