summaryrefslogtreecommitdiffstats
path: root/include/linux
diff options
context:
space:
mode:
Diffstat (limited to 'include/linux')
-rw-r--r--include/linux/amba/pl080.h146
-rw-r--r--include/linux/dmaengine.h48
-rw-r--r--include/linux/dw_dmac.h45
-rw-r--r--include/linux/of_dma.h74
-rw-r--r--include/linux/platform_data/dma-ste-dma40.h13
5 files changed, 285 insertions, 41 deletions
diff --git a/include/linux/amba/pl080.h b/include/linux/amba/pl080.h
new file mode 100644
index 00000000000..3e7b62fbefb
--- /dev/null
+++ b/include/linux/amba/pl080.h
@@ -0,0 +1,146 @@
+/* include/linux/amba/pl080.h
+ *
+ * Copyright 2008 Openmoko, Inc.
+ * Copyright 2008 Simtec Electronics
+ * http://armlinux.simtec.co.uk/
+ * Ben Dooks <ben@simtec.co.uk>
+ *
+ * ARM PrimeCell PL080 DMA controller
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+*/
+
+/* Note, there are some Samsung updates to this controller block which
+ * make it not entierly compatible with the PL080 specification from
+ * ARM. When in doubt, check the Samsung documentation first.
+ *
+ * The Samsung defines are PL080S, and add an extra control register,
+ * the ability to move more than 2^11 counts of data and some extra
+ * OneNAND features.
+*/
+
+#ifndef ASM_PL080_H
+#define ASM_PL080_H
+
+#define PL080_INT_STATUS (0x00)
+#define PL080_TC_STATUS (0x04)
+#define PL080_TC_CLEAR (0x08)
+#define PL080_ERR_STATUS (0x0C)
+#define PL080_ERR_CLEAR (0x10)
+#define PL080_RAW_TC_STATUS (0x14)
+#define PL080_RAW_ERR_STATUS (0x18)
+#define PL080_EN_CHAN (0x1c)
+#define PL080_SOFT_BREQ (0x20)
+#define PL080_SOFT_SREQ (0x24)
+#define PL080_SOFT_LBREQ (0x28)
+#define PL080_SOFT_LSREQ (0x2C)
+
+#define PL080_CONFIG (0x30)
+#define PL080_CONFIG_M2_BE (1 << 2)
+#define PL080_CONFIG_M1_BE (1 << 1)
+#define PL080_CONFIG_ENABLE (1 << 0)
+
+#define PL080_SYNC (0x34)
+
+/* Per channel configuration registers */
+
+#define PL080_Cx_STRIDE (0x20)
+#define PL080_Cx_BASE(x) ((0x100 + (x * 0x20)))
+#define PL080_Cx_SRC_ADDR(x) ((0x100 + (x * 0x20)))
+#define PL080_Cx_DST_ADDR(x) ((0x104 + (x * 0x20)))
+#define PL080_Cx_LLI(x) ((0x108 + (x * 0x20)))
+#define PL080_Cx_CONTROL(x) ((0x10C + (x * 0x20)))
+#define PL080_Cx_CONFIG(x) ((0x110 + (x * 0x20)))
+#define PL080S_Cx_CONTROL2(x) ((0x110 + (x * 0x20)))
+#define PL080S_Cx_CONFIG(x) ((0x114 + (x * 0x20)))
+
+#define PL080_CH_SRC_ADDR (0x00)
+#define PL080_CH_DST_ADDR (0x04)
+#define PL080_CH_LLI (0x08)
+#define PL080_CH_CONTROL (0x0C)
+#define PL080_CH_CONFIG (0x10)
+#define PL080S_CH_CONTROL2 (0x10)
+#define PL080S_CH_CONFIG (0x14)
+
+#define PL080_LLI_ADDR_MASK (0x3fffffff << 2)
+#define PL080_LLI_ADDR_SHIFT (2)
+#define PL080_LLI_LM_AHB2 (1 << 0)
+
+#define PL080_CONTROL_TC_IRQ_EN (1 << 31)
+#define PL080_CONTROL_PROT_MASK (0x7 << 28)
+#define PL080_CONTROL_PROT_SHIFT (28)
+#define PL080_CONTROL_PROT_CACHE (1 << 30)
+#define PL080_CONTROL_PROT_BUFF (1 << 29)
+#define PL080_CONTROL_PROT_SYS (1 << 28)
+#define PL080_CONTROL_DST_INCR (1 << 27)
+#define PL080_CONTROL_SRC_INCR (1 << 26)
+#define PL080_CONTROL_DST_AHB2 (1 << 25)
+#define PL080_CONTROL_SRC_AHB2 (1 << 24)
+#define PL080_CONTROL_DWIDTH_MASK (0x7 << 21)
+#define PL080_CONTROL_DWIDTH_SHIFT (21)
+#define PL080_CONTROL_SWIDTH_MASK (0x7 << 18)
+#define PL080_CONTROL_SWIDTH_SHIFT (18)
+#define PL080_CONTROL_DB_SIZE_MASK (0x7 << 15)
+#define PL080_CONTROL_DB_SIZE_SHIFT (15)
+#define PL080_CONTROL_SB_SIZE_MASK (0x7 << 12)
+#define PL080_CONTROL_SB_SIZE_SHIFT (12)
+#define PL080_CONTROL_TRANSFER_SIZE_MASK (0xfff << 0)
+#define PL080_CONTROL_TRANSFER_SIZE_SHIFT (0)
+
+#define PL080_BSIZE_1 (0x0)
+#define PL080_BSIZE_4 (0x1)
+#define PL080_BSIZE_8 (0x2)
+#define PL080_BSIZE_16 (0x3)
+#define PL080_BSIZE_32 (0x4)
+#define PL080_BSIZE_64 (0x5)
+#define PL080_BSIZE_128 (0x6)
+#define PL080_BSIZE_256 (0x7)
+
+#define PL080_WIDTH_8BIT (0x0)
+#define PL080_WIDTH_16BIT (0x1)
+#define PL080_WIDTH_32BIT (0x2)
+
+#define PL080N_CONFIG_ITPROT (1 << 20)
+#define PL080N_CONFIG_SECPROT (1 << 19)
+#define PL080_CONFIG_HALT (1 << 18)
+#define PL080_CONFIG_ACTIVE (1 << 17) /* RO */
+#define PL080_CONFIG_LOCK (1 << 16)
+#define PL080_CONFIG_TC_IRQ_MASK (1 << 15)
+#define PL080_CONFIG_ERR_IRQ_MASK (1 << 14)
+#define PL080_CONFIG_FLOW_CONTROL_MASK (0x7 << 11)
+#define PL080_CONFIG_FLOW_CONTROL_SHIFT (11)
+#define PL080_CONFIG_DST_SEL_MASK (0xf << 6)
+#define PL080_CONFIG_DST_SEL_SHIFT (6)
+#define PL080_CONFIG_SRC_SEL_MASK (0xf << 1)
+#define PL080_CONFIG_SRC_SEL_SHIFT (1)
+#define PL080_CONFIG_ENABLE (1 << 0)
+
+#define PL080_FLOW_MEM2MEM (0x0)
+#define PL080_FLOW_MEM2PER (0x1)
+#define PL080_FLOW_PER2MEM (0x2)
+#define PL080_FLOW_SRC2DST (0x3)
+#define PL080_FLOW_SRC2DST_DST (0x4)
+#define PL080_FLOW_MEM2PER_PER (0x5)
+#define PL080_FLOW_PER2MEM_PER (0x6)
+#define PL080_FLOW_SRC2DST_SRC (0x7)
+
+/* DMA linked list chain structure */
+
+struct pl080_lli {
+ u32 src_addr;
+ u32 dst_addr;
+ u32 next_lli;
+ u32 control0;
+};
+
+struct pl080s_lli {
+ u32 src_addr;
+ u32 dst_addr;
+ u32 next_lli;
+ u32 control0;
+ u32 control1;
+};
+
+#endif /* ASM_PL080_H */
diff --git a/include/linux/dmaengine.h b/include/linux/dmaengine.h
index d3201e438d1..f5939999cb6 100644
--- a/include/linux/dmaengine.h
+++ b/include/linux/dmaengine.h
@@ -608,7 +608,10 @@ static inline int dmaengine_device_control(struct dma_chan *chan,
enum dma_ctrl_cmd cmd,
unsigned long arg)
{
- return chan->device->device_control(chan, cmd, arg);
+ if (chan->device->device_control)
+ return chan->device->device_control(chan, cmd, arg);
+
+ return -ENOSYS;
}
static inline int dmaengine_slave_config(struct dma_chan *chan,
@@ -618,6 +621,11 @@ static inline int dmaengine_slave_config(struct dma_chan *chan,
(unsigned long)config);
}
+static inline bool is_slave_direction(enum dma_transfer_direction direction)
+{
+ return (direction == DMA_MEM_TO_DEV) || (direction == DMA_DEV_TO_MEM);
+}
+
static inline struct dma_async_tx_descriptor *dmaengine_prep_slave_single(
struct dma_chan *chan, dma_addr_t buf, size_t len,
enum dma_transfer_direction dir, unsigned long flags)
@@ -660,6 +668,13 @@ static inline struct dma_async_tx_descriptor *dmaengine_prep_dma_cyclic(
period_len, dir, flags, NULL);
}
+static inline struct dma_async_tx_descriptor *dmaengine_prep_interleaved_dma(
+ struct dma_chan *chan, struct dma_interleaved_template *xt,
+ unsigned long flags)
+{
+ return chan->device->device_prep_interleaved_dma(chan, xt, flags);
+}
+
static inline int dmaengine_terminate_all(struct dma_chan *chan)
{
return dmaengine_device_control(chan, DMA_TERMINATE_ALL, 0);
@@ -849,20 +864,6 @@ static inline bool async_tx_test_ack(struct dma_async_tx_descriptor *tx)
return (tx->flags & DMA_CTRL_ACK) == DMA_CTRL_ACK;
}
-#define first_dma_cap(mask) __first_dma_cap(&(mask))
-static inline int __first_dma_cap(const dma_cap_mask_t *srcp)
-{
- return min_t(int, DMA_TX_TYPE_END,
- find_first_bit(srcp->bits, DMA_TX_TYPE_END));
-}
-
-#define next_dma_cap(n, mask) __next_dma_cap((n), &(mask))
-static inline int __next_dma_cap(int n, const dma_cap_mask_t *srcp)
-{
- return min_t(int, DMA_TX_TYPE_END,
- find_next_bit(srcp->bits, DMA_TX_TYPE_END, n+1));
-}
-
#define dma_cap_set(tx, mask) __dma_cap_set((tx), &(mask))
static inline void
__dma_cap_set(enum dma_transaction_type tx_type, dma_cap_mask_t *dstp)
@@ -891,9 +892,7 @@ __dma_has_cap(enum dma_transaction_type tx_type, dma_cap_mask_t *srcp)
}
#define for_each_dma_cap_mask(cap, mask) \
- for ((cap) = first_dma_cap(mask); \
- (cap) < DMA_TX_TYPE_END; \
- (cap) = next_dma_cap((cap), (mask)))
+ for_each_set_bit(cap, mask.bits, DMA_TX_TYPE_END)
/**
* dma_async_issue_pending - flush pending transactions to HW
@@ -907,8 +906,6 @@ static inline void dma_async_issue_pending(struct dma_chan *chan)
chan->device->device_issue_pending(chan);
}
-#define dma_async_memcpy_issue_pending(chan) dma_async_issue_pending(chan)
-
/**
* dma_async_is_tx_complete - poll for transaction completion
* @chan: DMA channel
@@ -934,16 +931,13 @@ static inline enum dma_status dma_async_is_tx_complete(struct dma_chan *chan,
return status;
}
-#define dma_async_memcpy_complete(chan, cookie, last, used)\
- dma_async_is_tx_complete(chan, cookie, last, used)
-
/**
* dma_async_is_complete - test a cookie against chan state
* @cookie: transaction identifier to test status of
* @last_complete: last know completed transaction
* @last_used: last cookie value handed out
*
- * dma_async_is_complete() is used in dma_async_memcpy_complete()
+ * dma_async_is_complete() is used in dma_async_is_tx_complete()
* the test logic is separated for lightweight testing of multiple cookies
*/
static inline enum dma_status dma_async_is_complete(dma_cookie_t cookie,
@@ -974,6 +968,7 @@ enum dma_status dma_sync_wait(struct dma_chan *chan, dma_cookie_t cookie);
enum dma_status dma_wait_for_async_tx(struct dma_async_tx_descriptor *tx);
void dma_issue_pending_all(void);
struct dma_chan *__dma_request_channel(dma_cap_mask_t *mask, dma_filter_fn fn, void *fn_param);
+struct dma_chan *dma_request_slave_channel(struct device *dev, char *name);
void dma_release_channel(struct dma_chan *chan);
#else
static inline enum dma_status dma_wait_for_async_tx(struct dma_async_tx_descriptor *tx)
@@ -988,6 +983,11 @@ static inline struct dma_chan *__dma_request_channel(dma_cap_mask_t *mask,
{
return NULL;
}
+static inline struct dma_chan *dma_request_slave_channel(struct device *dev,
+ char *name)
+{
+ return NULL;
+}
static inline void dma_release_channel(struct dma_chan *chan)
{
}
diff --git a/include/linux/dw_dmac.h b/include/linux/dw_dmac.h
index e1c8c9e919a..41766de66e3 100644
--- a/include/linux/dw_dmac.h
+++ b/include/linux/dw_dmac.h
@@ -15,14 +15,38 @@
#include <linux/dmaengine.h>
/**
+ * struct dw_dma_slave - Controller-specific information about a slave
+ *
+ * @dma_dev: required DMA master device. Depricated.
+ * @bus_id: name of this device channel, not just a device name since
+ * devices may have more than one channel e.g. "foo_tx"
+ * @cfg_hi: Platform-specific initializer for the CFG_HI register
+ * @cfg_lo: Platform-specific initializer for the CFG_LO register
+ * @src_master: src master for transfers on allocated channel.
+ * @dst_master: dest master for transfers on allocated channel.
+ */
+struct dw_dma_slave {
+ struct device *dma_dev;
+ const char *bus_id;
+ u32 cfg_hi;
+ u32 cfg_lo;
+ u8 src_master;
+ u8 dst_master;
+};
+
+/**
* struct dw_dma_platform_data - Controller configuration parameters
* @nr_channels: Number of channels supported by hardware (max 8)
* @is_private: The device channels should be marked as private and not for
* by the general purpose DMA channel allocator.
+ * @chan_allocation_order: Allocate channels starting from 0 or 7
+ * @chan_priority: Set channel priority increasing from 0 to 7 or 7 to 0.
* @block_size: Maximum block size supported by the controller
* @nr_masters: Number of AHB masters supported by the controller
* @data_width: Maximum data width supported by hardware per AHB master
* (0 - 8bits, 1 - 16bits, ..., 5 - 256bits)
+ * @sd: slave specific data. Used for configuring channels
+ * @sd_count: count of slave data structures passed.
*/
struct dw_dma_platform_data {
unsigned int nr_channels;
@@ -36,6 +60,9 @@ struct dw_dma_platform_data {
unsigned short block_size;
unsigned char nr_masters;
unsigned char data_width[4];
+
+ struct dw_dma_slave *sd;
+ unsigned int sd_count;
};
/* bursts size */
@@ -50,23 +77,6 @@ enum dw_dma_msize {
DW_DMA_MSIZE_256,
};
-/**
- * struct dw_dma_slave - Controller-specific information about a slave
- *
- * @dma_dev: required DMA master device
- * @cfg_hi: Platform-specific initializer for the CFG_HI register
- * @cfg_lo: Platform-specific initializer for the CFG_LO register
- * @src_master: src master for transfers on allocated channel.
- * @dst_master: dest master for transfers on allocated channel.
- */
-struct dw_dma_slave {
- struct device *dma_dev;
- u32 cfg_hi;
- u32 cfg_lo;
- u8 src_master;
- u8 dst_master;
-};
-
/* Platform-configurable bits in CFG_HI */
#define DWC_CFGH_FCMODE (1 << 0)
#define DWC_CFGH_FIFO_MODE (1 << 1)
@@ -104,5 +114,6 @@ void dw_dma_cyclic_stop(struct dma_chan *chan);
dma_addr_t dw_dma_get_src_addr(struct dma_chan *chan);
dma_addr_t dw_dma_get_dst_addr(struct dma_chan *chan);
+bool dw_dma_generic_filter(struct dma_chan *chan, void *param);
#endif /* DW_DMAC_H */
diff --git a/include/linux/of_dma.h b/include/linux/of_dma.h
new file mode 100644
index 00000000000..d15073e080d
--- /dev/null
+++ b/include/linux/of_dma.h
@@ -0,0 +1,74 @@
+/*
+ * OF helpers for DMA request / controller
+ *
+ * Based on of_gpio.h
+ *
+ * Copyright (C) 2012 Texas Instruments Incorporated - http://www.ti.com/
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#ifndef __LINUX_OF_DMA_H
+#define __LINUX_OF_DMA_H
+
+#include <linux/of.h>
+#include <linux/dmaengine.h>
+
+struct device_node;
+
+struct of_dma {
+ struct list_head of_dma_controllers;
+ struct device_node *of_node;
+ int of_dma_nbcells;
+ struct dma_chan *(*of_dma_xlate)
+ (struct of_phandle_args *, struct of_dma *);
+ void *of_dma_data;
+ int use_count;
+};
+
+struct of_dma_filter_info {
+ dma_cap_mask_t dma_cap;
+ dma_filter_fn filter_fn;
+};
+
+#ifdef CONFIG_OF
+extern int of_dma_controller_register(struct device_node *np,
+ struct dma_chan *(*of_dma_xlate)
+ (struct of_phandle_args *, struct of_dma *),
+ void *data);
+extern int of_dma_controller_free(struct device_node *np);
+extern struct dma_chan *of_dma_request_slave_channel(struct device_node *np,
+ char *name);
+extern struct dma_chan *of_dma_simple_xlate(struct of_phandle_args *dma_spec,
+ struct of_dma *ofdma);
+#else
+static inline int of_dma_controller_register(struct device_node *np,
+ struct dma_chan *(*of_dma_xlate)
+ (struct of_phandle_args *, struct of_dma *),
+ void *data)
+{
+ return -ENODEV;
+}
+
+static inline int of_dma_controller_free(struct device_node *np)
+{
+ return -ENODEV;
+}
+
+static inline struct dma_chan *of_dma_request_slave_channel(struct device_node *np,
+ char *name)
+{
+ return NULL;
+}
+
+static inline struct dma_chan *of_dma_simple_xlate(struct of_phandle_args *dma_spec,
+ struct of_dma *ofdma)
+{
+ return NULL;
+}
+
+#endif
+
+#endif /* __LINUX_OF_DMA_H */
diff --git a/include/linux/platform_data/dma-ste-dma40.h b/include/linux/platform_data/dma-ste-dma40.h
index 9ff93b06568..4b781014b0a 100644
--- a/include/linux/platform_data/dma-ste-dma40.h
+++ b/include/linux/platform_data/dma-ste-dma40.h
@@ -147,6 +147,16 @@ struct stedma40_chan_cfg {
* @memcpy_conf_log: default configuration of logical channel memcpy
* @disabled_channels: A vector, ending with -1, that marks physical channels
* that are for different reasons not available for the driver.
+ * @soft_lli_chans: A vector, that marks physical channels will use LLI by SW
+ * which avoids HW bug that exists in some versions of the controller.
+ * SoftLLI introduces relink overhead that could impact performace for
+ * certain use cases.
+ * @num_of_soft_lli_chans: The number of channels that needs to be configured
+ * to use SoftLLI.
+ * @use_esram_lcla: flag for mapping the lcla into esram region
+ * @num_of_phy_chans: The number of physical channels implemented in HW.
+ * 0 means reading the number of channels from DMA HW but this is only valid
+ * for 'multiple of 4' channels, like 8.
*/
struct stedma40_platform_data {
u32 dev_len;
@@ -157,7 +167,10 @@ struct stedma40_platform_data {
struct stedma40_chan_cfg *memcpy_conf_phy;
struct stedma40_chan_cfg *memcpy_conf_log;
int disabled_channels[STEDMA40_MAX_PHYS];
+ int *soft_lli_chans;
+ int num_of_soft_lli_chans;
bool use_esram_lcla;
+ int num_of_phy_chans;
};
#ifdef CONFIG_STE_DMA40
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-12-16 11:52:20 +0000