Commit 39a8d7d1 authored by Dan Williams's avatar Dan Williams
Browse files

iop13xx: surface the iop13xx adma units to the iop-adma driver 



Adds the platform device definitions and the architecture specific
support routines (i.e. register initialization and descriptor formats) for the
iop-adma driver.

Changelog:
* added 'descriptor pool size' to the platform data
* add base support for buffer sizes larger than 16MB (hw max)
* build error fix from Kirill A. Shutemov
* rebase for async_tx changes
* add interrupt support
* do not call platform register macros in driver code
* remove unnecessary ARM assembly statement
* checkpatch.pl fixes
* gpl v2 only correction

Cc: Russell King <rmk@arm.linux.org.uk>
Signed-off-by: default avatarDan Williams <dan.j.williams@intel.com>
parent c2110923

arch/arm/mach-iop13xx/setup.c

+214 −3
Original line number Diff line number Diff line
@@ -25,6 +25,7 @@ 
#include <asm/hardware.h>

#include <asm/irq.h>

#include <asm/io.h>

#include <asm/hardware/iop_adma.h>



#define IOP13XX_UART_XTAL 33334000

#define IOP13XX_SETUP_DEBUG 0
@@ -236,19 +237,143 @@ static unsigned long iq8134x_probe_flash_size(void) 
}

#endif



/* ADMA Channels */

static struct resource iop13xx_adma_0_resources[] = {

	[0] = {

		.start = IOP13XX_ADMA_PHYS_BASE(0),

		.end = IOP13XX_ADMA_UPPER_PA(0),

		.flags = IORESOURCE_MEM,

	},

	[1] = {

		.start = IRQ_IOP13XX_ADMA0_EOT,

		.end = IRQ_IOP13XX_ADMA0_EOT,

		.flags = IORESOURCE_IRQ

	},

	[2] = {

		.start = IRQ_IOP13XX_ADMA0_EOC,

		.end = IRQ_IOP13XX_ADMA0_EOC,

		.flags = IORESOURCE_IRQ

	},

	[3] = {

		.start = IRQ_IOP13XX_ADMA0_ERR,

		.end = IRQ_IOP13XX_ADMA0_ERR,

		.flags = IORESOURCE_IRQ

	}

};



static struct resource iop13xx_adma_1_resources[] = {

	[0] = {

		.start = IOP13XX_ADMA_PHYS_BASE(1),

		.end = IOP13XX_ADMA_UPPER_PA(1),

		.flags = IORESOURCE_MEM,

	},

	[1] = {

		.start = IRQ_IOP13XX_ADMA1_EOT,

		.end = IRQ_IOP13XX_ADMA1_EOT,

		.flags = IORESOURCE_IRQ

	},

	[2] = {

		.start = IRQ_IOP13XX_ADMA1_EOC,

		.end = IRQ_IOP13XX_ADMA1_EOC,

		.flags = IORESOURCE_IRQ

	},

	[3] = {

		.start = IRQ_IOP13XX_ADMA1_ERR,

		.end = IRQ_IOP13XX_ADMA1_ERR,

		.flags = IORESOURCE_IRQ

	}

};



static struct resource iop13xx_adma_2_resources[] = {

	[0] = {

		.start = IOP13XX_ADMA_PHYS_BASE(2),

		.end = IOP13XX_ADMA_UPPER_PA(2),

		.flags = IORESOURCE_MEM,

	},

	[1] = {

		.start = IRQ_IOP13XX_ADMA2_EOT,

		.end = IRQ_IOP13XX_ADMA2_EOT,

		.flags = IORESOURCE_IRQ

	},

	[2] = {

		.start = IRQ_IOP13XX_ADMA2_EOC,

		.end = IRQ_IOP13XX_ADMA2_EOC,

		.flags = IORESOURCE_IRQ

	},

	[3] = {

		.start = IRQ_IOP13XX_ADMA2_ERR,

		.end = IRQ_IOP13XX_ADMA2_ERR,

		.flags = IORESOURCE_IRQ

	}

};



static u64 iop13xx_adma_dmamask = DMA_64BIT_MASK;

static struct iop_adma_platform_data iop13xx_adma_0_data = {

	.hw_id = 0,

	.pool_size = PAGE_SIZE,

};



static struct iop_adma_platform_data iop13xx_adma_1_data = {

	.hw_id = 1,

	.pool_size = PAGE_SIZE,

};



static struct iop_adma_platform_data iop13xx_adma_2_data = {

	.hw_id = 2,

	.pool_size = PAGE_SIZE,

};



/* The ids are fixed up later in iop13xx_platform_init */

static struct platform_device iop13xx_adma_0_channel = {

	.name = "iop-adma",

	.id = 0,

	.num_resources = 4,

	.resource = iop13xx_adma_0_resources,

	.dev = {

		.dma_mask = &iop13xx_adma_dmamask,

		.coherent_dma_mask = DMA_64BIT_MASK,

		.platform_data = (void *) &iop13xx_adma_0_data,

	},

};



static struct platform_device iop13xx_adma_1_channel = {

	.name = "iop-adma",

	.id = 0,

	.num_resources = 4,

	.resource = iop13xx_adma_1_resources,

	.dev = {

		.dma_mask = &iop13xx_adma_dmamask,

		.coherent_dma_mask = DMA_64BIT_MASK,

		.platform_data = (void *) &iop13xx_adma_1_data,

	},

};



static struct platform_device iop13xx_adma_2_channel = {

	.name = "iop-adma",

	.id = 0,

	.num_resources = 4,

	.resource = iop13xx_adma_2_resources,

	.dev = {

		.dma_mask = &iop13xx_adma_dmamask,

		.coherent_dma_mask = DMA_64BIT_MASK,

		.platform_data = (void *) &iop13xx_adma_2_data,

	},

};



void __init iop13xx_map_io(void)

{

	/* Initialize the Static Page Table maps */

	iotable_init(iop13xx_std_desc, ARRAY_SIZE(iop13xx_std_desc));

}



static int init_uart = 0;

static int init_i2c = 0;

static int init_uart;

static int init_i2c;

static int init_adma;



void __init iop13xx_platform_init(void)

{

	int i;

	u32 uart_idx, i2c_idx, plat_idx;

	u32 uart_idx, i2c_idx, adma_idx, plat_idx;

	struct platform_device *iop13xx_devices[IQ81340_MAX_PLAT_DEVICES];



	/* set the bases so we can read the device id */
@@ -294,6 +419,12 @@ void __init iop13xx_platform_init(void) 
		}

	}



	if (init_adma == IOP13XX_INIT_ADMA_DEFAULT) {

		init_adma |= IOP13XX_INIT_ADMA_0;

		init_adma |= IOP13XX_INIT_ADMA_1;

		init_adma |= IOP13XX_INIT_ADMA_2;

	}



	plat_idx = 0;

	uart_idx = 0;

	i2c_idx = 0;
@@ -332,6 +463,56 @@ void __init iop13xx_platform_init(void) 
		}

	}



	/* initialize adma channel ids and capabilities */

	adma_idx = 0;

	for (i = 0; i < IQ81340_NUM_ADMA; i++) {

		struct iop_adma_platform_data *plat_data;

		if ((init_adma & (1 << i)) && IOP13XX_SETUP_DEBUG)

			printk(KERN_INFO

				"Adding adma%d to platform device list\n", i);

		switch (init_adma & (1 << i)) {

		case IOP13XX_INIT_ADMA_0:

			iop13xx_adma_0_channel.id = adma_idx++;

			iop13xx_devices[plat_idx++] = &iop13xx_adma_0_channel;

			plat_data = &iop13xx_adma_0_data;

			dma_cap_set(DMA_MEMCPY, plat_data->cap_mask);

			dma_cap_set(DMA_XOR, plat_data->cap_mask);

			dma_cap_set(DMA_DUAL_XOR, plat_data->cap_mask);

			dma_cap_set(DMA_ZERO_SUM, plat_data->cap_mask);

			dma_cap_set(DMA_MEMSET, plat_data->cap_mask);

			dma_cap_set(DMA_MEMCPY_CRC32C, plat_data->cap_mask);

			dma_cap_set(DMA_INTERRUPT, plat_data->cap_mask);

			break;

		case IOP13XX_INIT_ADMA_1:

			iop13xx_adma_1_channel.id = adma_idx++;

			iop13xx_devices[plat_idx++] = &iop13xx_adma_1_channel;

			plat_data = &iop13xx_adma_1_data;

			dma_cap_set(DMA_MEMCPY, plat_data->cap_mask);

			dma_cap_set(DMA_XOR, plat_data->cap_mask);

			dma_cap_set(DMA_DUAL_XOR, plat_data->cap_mask);

			dma_cap_set(DMA_ZERO_SUM, plat_data->cap_mask);

			dma_cap_set(DMA_MEMSET, plat_data->cap_mask);

			dma_cap_set(DMA_MEMCPY_CRC32C, plat_data->cap_mask);

			dma_cap_set(DMA_INTERRUPT, plat_data->cap_mask);

			break;

		case IOP13XX_INIT_ADMA_2:

			iop13xx_adma_2_channel.id = adma_idx++;

			iop13xx_devices[plat_idx++] = &iop13xx_adma_2_channel;

			plat_data = &iop13xx_adma_2_data;

			dma_cap_set(DMA_MEMCPY, plat_data->cap_mask);

			dma_cap_set(DMA_XOR, plat_data->cap_mask);

			dma_cap_set(DMA_DUAL_XOR, plat_data->cap_mask);

			dma_cap_set(DMA_ZERO_SUM, plat_data->cap_mask);

			dma_cap_set(DMA_MEMSET, plat_data->cap_mask);

			dma_cap_set(DMA_MEMCPY_CRC32C, plat_data->cap_mask);

			dma_cap_set(DMA_INTERRUPT, plat_data->cap_mask);

			dma_cap_set(DMA_PQ_XOR, plat_data->cap_mask);

			dma_cap_set(DMA_PQ_UPDATE, plat_data->cap_mask);

			dma_cap_set(DMA_PQ_ZERO_SUM, plat_data->cap_mask);

			break;

		}

	}



#ifdef CONFIG_MTD_PHYSMAP

	iq8134x_flash_resource.end = iq8134x_flash_resource.start +

				iq8134x_probe_flash_size() - 1;
@@ -399,5 +580,35 @@ static int __init iop13xx_init_i2c_setup(char *str) 
	return 1;

}



static int __init iop13xx_init_adma_setup(char *str)

{

	if (str)	{

		while (*str != '\0') {

			switch (*str) {

			case '0':

				init_adma |= IOP13XX_INIT_ADMA_0;

				break;

			case '1':

				init_adma |= IOP13XX_INIT_ADMA_1;

				break;

			case '2':

				init_adma |= IOP13XX_INIT_ADMA_2;

				break;

			case ',':

			case '=':

				break;

			default:

				PRINTK("\"iop13xx_init_adma\" malformed"

					    " at character: \'%c\'", *str);

				*(str + 1) = '\0';

				init_adma = IOP13XX_INIT_ADMA_DEFAULT;

			}

			str++;

		}

	}

	return 1;

}



__setup("iop13xx_init_adma", iop13xx_init_adma_setup);

__setup("iop13xx_init_uart", iop13xx_init_uart_setup);

__setup("iop13xx_init_i2c", iop13xx_init_i2c_setup);

include/asm-arm/arch-iop13xx/adma.h

0 → 100644
+544 −0
Original line number Diff line number Diff line 
/*

 * 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, int int_en)

{

	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 = int_en;

	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, int int_en)

{

	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 = int_en;

	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, int int_en)

{

	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 = int_en;

	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, int int_en)

{

	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 = int_en;

	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 void iop_chan_idle(int busy, struct iop_adma_chan *chan)

{

	do { } while (0);

}



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 */

include/asm-arm/arch-iop13xx/iop13xx.h

+16 −22
Original line number Diff line number Diff line
@@ -166,12 +166,22 @@ static inline int iop13xx_cpu_id(void) 
#define IOP13XX_INIT_I2C_1	      (1 << 1)

#define IOP13XX_INIT_I2C_2	      (1 << 2)



/* ADMA selection flags */

/* INIT_ADMA_DEFAULT = Rely on CONFIG_IOP13XX_ADMA* */

#define IOP13XX_INIT_ADMA_DEFAULT     (0)

#define IOP13XX_INIT_ADMA_0           (1 << 0)

#define IOP13XX_INIT_ADMA_1           (1 << 1)

#define IOP13XX_INIT_ADMA_2           (1 << 2)



/* Platform devices */

#define IQ81340_NUM_UART     		2

#define IQ81340_NUM_I2C      		3

#define IQ81340_NUM_PHYS_MAP_FLASH	1

#define IQ81340_NUM_ADMA     		3

#define IQ81340_MAX_PLAT_DEVICES (IQ81340_NUM_UART + \

				IQ81340_NUM_I2C + \

				IQ81340_NUM_PHYS_MAP_FLASH)

				IQ81340_NUM_PHYS_MAP_FLASH + \

				IQ81340_NUM_ADMA)



/*========================== PMMR offsets for key registers ============*/

#define IOP13XX_ATU0_PMMR_OFFSET   	0x00048000
@@ -444,22 +454,6 @@ static inline int iop13xx_cpu_id(void) 
/*==============================ADMA UNITS===============================*/

#define IOP13XX_ADMA_PHYS_BASE(chan)	IOP13XX_REG_ADDR32_PHYS((chan << 9))

#define IOP13XX_ADMA_UPPER_PA(chan)	(IOP13XX_ADMA_PHYS_BASE(chan) + 0xc0)

#define IOP13XX_ADMA_OFFSET(chan, ofs)	IOP13XX_REG_ADDR32((chan << 9) + (ofs))



#define IOP13XX_ADMA_ACCR(chan)      IOP13XX_ADMA_OFFSET(chan, 0x0)

#define IOP13XX_ADMA_ACSR(chan)      IOP13XX_ADMA_OFFSET(chan, 0x4)

#define IOP13XX_ADMA_ADAR(chan)      IOP13XX_ADMA_OFFSET(chan, 0x8)

#define IOP13XX_ADMA_IIPCR(chan)     IOP13XX_ADMA_OFFSET(chan, 0x18)

#define IOP13XX_ADMA_IIPAR(chan)     IOP13XX_ADMA_OFFSET(chan, 0x1c)

#define IOP13XX_ADMA_IIPUAR(chan)    IOP13XX_ADMA_OFFSET(chan, 0x20)

#define IOP13XX_ADMA_ANDAR(chan)     IOP13XX_ADMA_OFFSET(chan, 0x24)

#define IOP13XX_ADMA_ADCR(chan)      IOP13XX_ADMA_OFFSET(chan, 0x28)

#define IOP13XX_ADMA_CARMD(chan)     IOP13XX_ADMA_OFFSET(chan, 0x2c)

#define IOP13XX_ADMA_ABCR(chan)      IOP13XX_ADMA_OFFSET(chan, 0x30)

#define IOP13XX_ADMA_DLADR(chan)     IOP13XX_ADMA_OFFSET(chan, 0x34)

#define IOP13XX_ADMA_DUADR(chan)     IOP13XX_ADMA_OFFSET(chan, 0x38)

#define IOP13XX_ADMA_SLAR(src, chan) IOP13XX_ADMA_OFFSET(chan, 0x3c + (src <<3))

#define IOP13XX_ADMA_SUAR(src, chan) IOP13XX_ADMA_OFFSET(chan, 0x40 + (src <<3))



/*==============================XSI BRIDGE===============================*/

#define IOP13XX_XBG_BECSR		IOP13XX_REG_ADDR32(0x178c)

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