diff options
Diffstat (limited to 'include')
| -rw-r--r-- | include/dt-bindings/dma/axi-dmac.h | 48 | ||||
| -rw-r--r-- | include/dt-bindings/dma/jz4780-dma.h | 49 | ||||
| -rw-r--r-- | include/linux/dmaengine.h | 75 | ||||
| -rw-r--r-- | include/linux/shdma-base.h | 5 |
4 files changed, 121 insertions, 56 deletions
diff --git a/include/dt-bindings/dma/axi-dmac.h b/include/dt-bindings/dma/axi-dmac.h new file mode 100644 index 000000000000..ad9e6ecb9c2f --- /dev/null +++ b/include/dt-bindings/dma/axi-dmac.h @@ -0,0 +1,48 @@ +/* + * This file is dual-licensed: you can use it either under the terms + * of the GPL or the X11 license, at your option. Note that this dual + * licensing only applies to this file, and not this project as a + * whole. + * + * a) This file is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of the + * License, or (at your option) any later version. + * + * This file is distributed in the hope that 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. + * + * Or, alternatively, + * + * b) Permission is hereby granted, free of charge, to any person + * obtaining a copy of this software and associated documentation + * files (the "Software"), to deal in the Software without + * restriction, including without limitation the rights to use, + * copy, modify, merge, publish, distribute, sublicense, and/or + * sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following + * conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES + * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT + * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, + * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING + * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR + * OTHER DEALINGS IN THE SOFTWARE. + */ + +#ifndef __DT_BINDINGS_DMA_AXI_DMAC_H__ +#define __DT_BINDINGS_DMA_AXI_DMAC_H__ + +#define AXI_DMAC_BUS_TYPE_AXI_MM 0 +#define AXI_DMAC_BUS_TYPE_AXI_STREAM 1 +#define AXI_DMAC_BUS_TYPE_FIFO 2 + +#endif diff --git a/include/dt-bindings/dma/jz4780-dma.h b/include/dt-bindings/dma/jz4780-dma.h deleted file mode 100644 index df017fdfb44e..000000000000 --- a/include/dt-bindings/dma/jz4780-dma.h +++ /dev/null @@ -1,49 +0,0 @@ -#ifndef __DT_BINDINGS_DMA_JZ4780_DMA_H__ -#define __DT_BINDINGS_DMA_JZ4780_DMA_H__ - -/* - * Request type numbers for the JZ4780 DMA controller (written to the DRTn - * register for the channel). - */ -#define JZ4780_DMA_I2S1_TX 0x4 -#define JZ4780_DMA_I2S1_RX 0x5 -#define JZ4780_DMA_I2S0_TX 0x6 -#define JZ4780_DMA_I2S0_RX 0x7 -#define JZ4780_DMA_AUTO 0x8 -#define JZ4780_DMA_SADC_RX 0x9 -#define JZ4780_DMA_UART4_TX 0xc -#define JZ4780_DMA_UART4_RX 0xd -#define JZ4780_DMA_UART3_TX 0xe -#define JZ4780_DMA_UART3_RX 0xf -#define JZ4780_DMA_UART2_TX 0x10 -#define JZ4780_DMA_UART2_RX 0x11 -#define JZ4780_DMA_UART1_TX 0x12 -#define JZ4780_DMA_UART1_RX 0x13 -#define JZ4780_DMA_UART0_TX 0x14 -#define JZ4780_DMA_UART0_RX 0x15 -#define JZ4780_DMA_SSI0_TX 0x16 -#define JZ4780_DMA_SSI0_RX 0x17 -#define JZ4780_DMA_SSI1_TX 0x18 -#define JZ4780_DMA_SSI1_RX 0x19 -#define JZ4780_DMA_MSC0_TX 0x1a -#define JZ4780_DMA_MSC0_RX 0x1b -#define JZ4780_DMA_MSC1_TX 0x1c -#define JZ4780_DMA_MSC1_RX 0x1d -#define JZ4780_DMA_MSC2_TX 0x1e -#define JZ4780_DMA_MSC2_RX 0x1f -#define JZ4780_DMA_PCM0_TX 0x20 -#define JZ4780_DMA_PCM0_RX 0x21 -#define JZ4780_DMA_SMB0_TX 0x24 -#define JZ4780_DMA_SMB0_RX 0x25 -#define JZ4780_DMA_SMB1_TX 0x26 -#define JZ4780_DMA_SMB1_RX 0x27 -#define JZ4780_DMA_SMB2_TX 0x28 -#define JZ4780_DMA_SMB2_RX 0x29 -#define JZ4780_DMA_SMB3_TX 0x2a -#define JZ4780_DMA_SMB3_RX 0x2b -#define JZ4780_DMA_SMB4_TX 0x2c -#define JZ4780_DMA_SMB4_RX 0x2d -#define JZ4780_DMA_DES_TX 0x2e -#define JZ4780_DMA_DES_RX 0x2f - -#endif /* __DT_BINDINGS_DMA_JZ4780_DMA_H__ */ diff --git a/include/linux/dmaengine.h b/include/linux/dmaengine.h index e2f5eb419976..7ea9184eaa13 100644 --- a/include/linux/dmaengine.h +++ b/include/linux/dmaengine.h @@ -66,6 +66,7 @@ enum dma_transaction_type { DMA_XOR_VAL, DMA_PQ_VAL, DMA_MEMSET, + DMA_MEMSET_SG, DMA_INTERRUPT, DMA_SG, DMA_PRIVATE, @@ -183,6 +184,8 @@ struct dma_interleaved_template { * operation it continues the calculation with new sources * @DMA_PREP_FENCE - tell the driver that subsequent operations depend * on the result of this operation + * @DMA_CTRL_REUSE: client can reuse the descriptor and submit again till + * cleared or freed */ enum dma_ctrl_flags { DMA_PREP_INTERRUPT = (1 << 0), @@ -191,6 +194,7 @@ enum dma_ctrl_flags { DMA_PREP_PQ_DISABLE_Q = (1 << 3), DMA_PREP_CONTINUE = (1 << 4), DMA_PREP_FENCE = (1 << 5), + DMA_CTRL_REUSE = (1 << 6), }; /** @@ -400,6 +404,8 @@ enum dma_residue_granularity { * @cmd_pause: true, if pause and thereby resume is supported * @cmd_terminate: true, if terminate cmd is supported * @residue_granularity: granularity of the reported transfer residue + * @descriptor_reuse: if a descriptor can be reused by client and + * resubmitted multiple times */ struct dma_slave_caps { u32 src_addr_widths; @@ -408,6 +414,7 @@ struct dma_slave_caps { bool cmd_pause; bool cmd_terminate; enum dma_residue_granularity residue_granularity; + bool descriptor_reuse; }; static inline const char *dma_chan_name(struct dma_chan *chan) @@ -467,6 +474,7 @@ struct dma_async_tx_descriptor { dma_addr_t phys; struct dma_chan *chan; dma_cookie_t (*tx_submit)(struct dma_async_tx_descriptor *tx); + int (*desc_free)(struct dma_async_tx_descriptor *tx); dma_async_tx_callback callback; void *callback_param; struct dmaengine_unmap_data *unmap; @@ -585,6 +593,20 @@ struct dma_tx_state { }; /** + * enum dmaengine_alignment - defines alignment of the DMA async tx + * buffers + */ +enum dmaengine_alignment { + DMAENGINE_ALIGN_1_BYTE = 0, + DMAENGINE_ALIGN_2_BYTES = 1, + DMAENGINE_ALIGN_4_BYTES = 2, + DMAENGINE_ALIGN_8_BYTES = 3, + DMAENGINE_ALIGN_16_BYTES = 4, + DMAENGINE_ALIGN_32_BYTES = 5, + DMAENGINE_ALIGN_64_BYTES = 6, +}; + +/** * struct dma_device - info on the entity supplying DMA services * @chancnt: how many DMA channels are supported * @privatecnt: how many DMA channels are requested by dma_request_channel @@ -616,6 +638,7 @@ struct dma_tx_state { * @device_prep_dma_pq: prepares a pq operation * @device_prep_dma_pq_val: prepares a pqzero_sum operation * @device_prep_dma_memset: prepares a memset operation + * @device_prep_dma_memset_sg: prepares a memset operation over a scatter list * @device_prep_dma_interrupt: prepares an end of chain interrupt operation * @device_prep_slave_sg: prepares a slave dma operation * @device_prep_dma_cyclic: prepare a cyclic dma operation suitable for audio. @@ -645,10 +668,10 @@ struct dma_device { dma_cap_mask_t cap_mask; unsigned short max_xor; unsigned short max_pq; - u8 copy_align; - u8 xor_align; - u8 pq_align; - u8 fill_align; + enum dmaengine_alignment copy_align; + enum dmaengine_alignment xor_align; + enum dmaengine_alignment pq_align; + enum dmaengine_alignment fill_align; #define DMA_HAS_PQ_CONTINUE (1 << 15) int dev_id; @@ -682,6 +705,9 @@ struct dma_device { struct dma_async_tx_descriptor *(*device_prep_dma_memset)( struct dma_chan *chan, dma_addr_t dest, int value, size_t len, unsigned long flags); + struct dma_async_tx_descriptor *(*device_prep_dma_memset_sg)( + struct dma_chan *chan, struct scatterlist *sg, + unsigned int nents, int value, unsigned long flags); struct dma_async_tx_descriptor *(*device_prep_dma_interrupt)( struct dma_chan *chan, unsigned long flags); struct dma_async_tx_descriptor *(*device_prep_dma_sg)( @@ -833,7 +859,8 @@ static inline dma_cookie_t dmaengine_submit(struct dma_async_tx_descriptor *desc return desc->tx_submit(desc); } -static inline bool dmaengine_check_align(u8 align, size_t off1, size_t off2, size_t len) +static inline bool dmaengine_check_align(enum dmaengine_alignment align, + size_t off1, size_t off2, size_t len) { size_t mask; @@ -1155,6 +1182,39 @@ static inline int dma_get_slave_caps(struct dma_chan *chan, } #endif +static inline int dmaengine_desc_set_reuse(struct dma_async_tx_descriptor *tx) +{ + struct dma_slave_caps caps; + + dma_get_slave_caps(tx->chan, &caps); + + if (caps.descriptor_reuse) { + tx->flags |= DMA_CTRL_REUSE; + return 0; + } else { + return -EPERM; + } +} + +static inline void dmaengine_desc_clear_reuse(struct dma_async_tx_descriptor *tx) +{ + tx->flags &= ~DMA_CTRL_REUSE; +} + +static inline bool dmaengine_desc_test_reuse(struct dma_async_tx_descriptor *tx) +{ + return (tx->flags & DMA_CTRL_REUSE) == DMA_CTRL_REUSE; +} + +static inline int dmaengine_desc_free(struct dma_async_tx_descriptor *desc) +{ + /* this is supported for reusable desc, so check that */ + if (dmaengine_desc_test_reuse(desc)) + return desc->desc_free(desc); + else + return -EPERM; +} + /* --- DMA device --- */ int dma_async_device_register(struct dma_device *device); @@ -1169,7 +1229,7 @@ struct dma_chan *dma_get_any_slave_channel(struct dma_device *device); static inline struct dma_chan *__dma_request_slave_channel_compat(const dma_cap_mask_t *mask, dma_filter_fn fn, void *fn_param, - struct device *dev, char *name) + struct device *dev, const char *name) { struct dma_chan *chan; @@ -1177,6 +1237,9 @@ static inline struct dma_chan if (chan) return chan; + if (!fn || !fn_param) + return NULL; + return __dma_request_channel(mask, fn, fn_param); } #endif /* DMAENGINE_H */ diff --git a/include/linux/shdma-base.h b/include/linux/shdma-base.h index dd0ba502ccb3..d927647e6350 100644 --- a/include/linux/shdma-base.h +++ b/include/linux/shdma-base.h @@ -128,7 +128,10 @@ void shdma_cleanup(struct shdma_dev *sdev); #if IS_ENABLED(CONFIG_SH_DMAE_BASE) bool shdma_chan_filter(struct dma_chan *chan, void *arg); #else -#define shdma_chan_filter NULL +static inline bool shdma_chan_filter(struct dma_chan *chan, void *arg) +{ + return false; +} #endif #endif |