Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1760876AbXF0B6B (ORCPT ); Tue, 26 Jun 2007 21:58:01 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1757378AbXF0BwL (ORCPT ); Tue, 26 Jun 2007 21:52:11 -0400 Received: from mga09.intel.com ([134.134.136.24]:17743 "EHLO mga09.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757613AbXF0BwF (ORCPT ); Tue, 26 Jun 2007 21:52:05 -0400 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="4.16,465,1175497200"; d="scan'208";a="100478160" From: Dan Williams Subject: [md-accel PATCH 17/19] iop13xx: surface the iop13xx adma units to the iop-adma driver To: linux-kernel@vger.kernel.org, linux-raid@vger.kernel.org Cc: neilb@suse.de, akpm@linux-foundation.org, davem@davemloft.net, christopher.leech@intel.com, shannon.nelson@intel.com, herbert@gondor.apana.org.au, jeff@garzik.org Date: Tue, 26 Jun 2007 18:52:00 -0700 Message-ID: <20070627015200.18962.66343.stgit@dwillia2-linux.ch.intel.com> In-Reply-To: <20070627014823.18962.96398.stgit@dwillia2-linux.ch.intel.com> References: <20070627014823.18962.96398.stgit@dwillia2-linux.ch.intel.com> User-Agent: StGIT/0.12.1 MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 25797 Lines: 900 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 Signed-off-by: Dan Williams --- arch/arm/mach-iop13xx/setup.c | 217 +++++++++++++ include/asm-arm/arch-iop13xx/adma.h | 544 ++++++++++++++++++++++++++++++++ include/asm-arm/arch-iop13xx/iop13xx.h | 38 +- 3 files changed, 774 insertions(+), 25 deletions(-) diff --git a/arch/arm/mach-iop13xx/setup.c b/arch/arm/mach-iop13xx/setup.c index bc48715..bfe0c87 100644 --- a/arch/arm/mach-iop13xx/setup.c +++ b/arch/arm/mach-iop13xx/setup.c @@ -25,6 +25,7 @@ #include #include #include +#include #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); diff --git a/include/asm-arm/arch-iop13xx/adma.h b/include/asm-arm/arch-iop13xx/adma.h new file mode 100644 index 0000000..04006c1 --- /dev/null +++ b/include/asm-arm/arch-iop13xx/adma.h @@ -0,0 +1,544 @@ +/* + * 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 +#include +#include +#include + +#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 */ diff --git a/include/asm-arm/arch-iop13xx/iop13xx.h b/include/asm-arm/arch-iop13xx/iop13xx.h index e6736c3..d4e4f82 100644 --- a/include/asm-arm/arch-iop13xx/iop13xx.h +++ b/include/asm-arm/arch-iop13xx/iop13xx.h @@ -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) -#define IQ81340_NUM_UART 2 -#define IQ81340_NUM_I2C 3 -#define IQ81340_NUM_PHYS_MAP_FLASH 1 -#define IQ81340_MAX_PLAT_DEVICES (IQ81340_NUM_UART +\ - IQ81340_NUM_I2C +\ - IQ81340_NUM_PHYS_MAP_FLASH) +/* 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_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) - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/