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/openbmc/linux/Documentation/devicetree/bindings/dma/
H A Dintel,ldma.yaml31 "#dma-cells":
38 dma-channels:
42 dma-channel-mask:
58 intel,dma-poll-cnt:
64 intel,dma-byte-en:
71 intel,dma-drb:
76 intel,dma-dburst-wr:
94 #dma-cells = <3>;
103 intel,dma-byte-en;
104 intel,dma-drb;
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H A Dmediatek,uart-dma.yaml4 $id: http://devicetree.org/schemas/dma/mediatek,uart-dma.yaml#
17 - $ref: dma-controller.yaml#
24 - mediatek,mt2712-uart-dma
30 - mediatek,mt6577-uart-dma
49 "#dma-cells":
54 dma-requests:
59 mediatek,dma-33bits:
73 - dma-requests
116 dma-requests = <12>;
119 mediatek,dma-33bits;
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H A Dk3dma.txt3 See dma.txt first
7 - "hisilicon,k3-dma-1.0"
11 - #dma-cells: see dma.txt, should be 1, para number
12 - dma-channels: physical channels supported
20 dma0: dma@fcd02000 {
21 compatible = "hisilicon,k3-dma-1.0";
23 #dma-cells = <1>;
24 dma-channels = <16>;
25 dma-requests = <27>;
38 dma-names = "rx", "tx";
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H A Ddma-router.yaml4 $id: http://devicetree.org/schemas/dma/dma-router.yaml#
13 - $ref: dma-common.yaml#
23 pattern: "^dma-router(@.*)?$"
25 dma-masters:
33 dma-requests:
38 - "#dma-cells"
39 - dma-masters
48 #dma-cells = <1>;
49 dma-requests = <205>;
50 ti,dma-safe-map = <0>;
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H A Dingenic,dma.yaml4 $id: http://devicetree.org/schemas/dma/ingenic,dma.yaml#
13 - $ref: dma-controller.yaml#
19 - ingenic,jz4740-dma
20 - ingenic,jz4725b-dma
21 - ingenic,jz4755-dma
22 - ingenic,jz4760-dma
30 - ingenic,x1000-dma
31 - ingenic,x1830-dma
47 "#dma-cells":
87 dma: dma-controller@13420000 {
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H A Dlpc1850-dmamux.txt6 - #dma-cells: Should be set to <3>.
7 * 1st cell contain the master dma request signal
19 dmac: dma@40002000 {
26 #dma-cells = <2>;
27 dma-channels = <8>;
28 dma-requests = <16>;
37 dmamux: dma-mux {
39 #dma-cells = <3>;
40 dma-requests = <64>;
41 dma-masters = <&dmac>;
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H A Ddma-controller.yaml4 $id: http://devicetree.org/schemas/dma/dma-controller.yaml#
13 - $ref: dma-common.yaml#
18 pattern: "^dma-controller(@.*)?$"
24 dma: dma-controller@48000000 {
31 #dma-cells = <1>;
32 dma-channels = <32>;
33 dma-requests = <127>;
34 dma-channel-mask = <0xfffe>;
H A Dmoxa,moxart-dma.txt3 See dma.txt first
7 - compatible : Must be "moxa,moxart-dma"
11 - #dma-cells : Should be 1, a single cell holding a line request number
15 dma: dma@90500000 {
16 compatible = "moxa,moxart-dma";
19 #dma-cells = <1>;
26 described in the dma.txt file, using a two-cell specifier for each channel:
34 Use specific request line passing from dma
42 dmas = <&dma 5>,
43 <&dma 5>;
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H A Drenesas,nbpfaxi.txt17 - #dma-cells: must be 2: the first integer is a terminal number, to which this
35 You can use dma-channels and dma-requests as described in dma.txt, although they
40 dma: dma-controller@48000000 {
51 #dma-cells = <2>;
52 dma-channels = <8>;
53 dma-requests = <8>;
60 dmas and dma-names are required, as described in dma.txt.
64 #include <dt-bindings/dma/nbpfaxi.h>
67 dmas = <&dma 0 (NBPF_SLAVE_RQ_HIGH | NBPF_SLAVE_RQ_LEVEL)
68 &dma 1 (NBPF_SLAVE_RQ_HIGH | NBPF_SLAVE_RQ_LEVEL)>;
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H A Dbrcm,bcm2835-dma.yaml4 $id: http://devicetree.org/schemas/dma/brcm,bcm2835-dma.yaml#
19 - $ref: dma-controller.yaml#
23 const: brcm,bcm2835-dma
39 '#dma-cells':
43 brcm,dma-channel-mask:
56 - "#dma-cells"
57 - brcm,dma-channel-mask
61 dma-controller@7e007000 {
62 compatible = "brcm,bcm2835-dma";
97 "dma-shared-all";
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/openbmc/linux/drivers/iio/adc/
H A Dti_am335x_adc.c217 struct tiadc_dma *dma = &adc_dev->dma; in tiadc_dma_rx_complete() local
221 data = dma->buf + dma->current_period * dma->period_size; in tiadc_dma_rx_complete()
233 struct tiadc_dma *dma = &adc_dev->dma; in tiadc_start_dma() local
252 dma->conf.src_maxburst = dma->fifo_thresh + 1; in tiadc_start_dma()
253 dmaengine_slave_config(dma->chan, &dma->conf); in tiadc_start_dma()
255 desc = dmaengine_prep_dma_cyclic(dma->chan, dma->addr, in tiadc_start_dma()
301 struct tiadc_dma *dma = &adc_dev->dma; in tiadc_buffer_postenable() local
333 struct tiadc_dma *dma = &adc_dev->dma; in tiadc_buffer_predisable() local
530 struct tiadc_dma *dma = &adc_dev->dma; in tiadc_request_dma() local
690 struct tiadc_dma *dma = &adc_dev->dma; in tiadc_remove() local
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/openbmc/linux/Documentation/devicetree/bindings/serial/
H A Dmrvl,pxa-ssp.txt27 dmas = <&dma 13
28 &dma 14>;
29 dma-names = "rx", "tx";
38 dmas = <&dma 15
39 &dma 16>;
40 dma-names = "rx", "tx";
49 dmas = <&dma 66
50 &dma 67>;
51 dma-names = "rx", "tx";
60 dmas = <&dma 2
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/openbmc/linux/sound/soc/sh/rcar/
H A Ddma.c43 } dma; member
55 #define rsnd_dma_to_dmaen(dma) (&(dma)->dma.en) argument
56 #define rsnd_dma_to_dmapp(dma) (&(dma)->dma.pp) argument
148 dma->mod_from, in rsnd_dmaen_prepare()
149 dma->mod_to); in rsnd_dmaen_prepare()
490 rsnd_dmapp_write(dma, dma->src_addr, PDMASAR); in rsnd_dmapp_start()
491 rsnd_dmapp_write(dma, dma->dst_addr, PDMADAR); in rsnd_dmapp_start()
512 dmapp->dmapp_id, &dma->src_addr, &dma->dst_addr, dmapp->chcr); in rsnd_dmapp_attach()
863 dma = devm_kzalloc(dev, sizeof(*dma), GFP_KERNEL); in rsnd_dma_alloc()
864 if (!dma) in rsnd_dma_alloc()
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/openbmc/linux/sound/pci/cs5535audio/
H A Dcs5535audio_pm.c53 struct cs5535audio_dma *dma = &cs5535au->dmas[i]; in snd_cs5535audio_suspend() local
54 if (dma && dma->substream) in snd_cs5535audio_suspend()
55 dma->saved_prd = dma->ops->read_prd(cs5535au); in snd_cs5535audio_suspend()
86 struct cs5535audio_dma *dma = &cs5535au->dmas[i]; in snd_cs5535audio_resume() local
87 if (dma && dma->substream) { in snd_cs5535audio_resume()
88 dma->substream->ops->prepare(dma->substream); in snd_cs5535audio_resume()
89 dma->ops->setup_prd(cs5535au, dma->saved_prd); in snd_cs5535audio_resume()
/openbmc/linux/drivers/tty/serial/
H A Dsamsung_tty.c287 struct s3c24xx_uart_dma *dma = ourport->dma; in s3c24xx_serial_stop_tx() local
311 dma->tx_transfer_addr, dma->tx_size, in s3c24xx_serial_stop_tx()
344 dma->tx_transfer_addr, dma->tx_size, in s3c24xx_serial_tx_dma_complete()
448 dma->tx_transfer_addr, dma->tx_size, in s3c24xx_serial_start_tx_dma()
452 dma->tx_transfer_addr, dma->tx_size, in s3c24xx_serial_start_tx_dma()
461 dma->tx_bytes_requested = dma->tx_size; in s3c24xx_serial_start_tx_dma()
562 if (dma && dma->rx_chan) { in s3c24xx_serial_stop_rx()
654 dma->rx_bytes_requested = dma->rx_size; in s3c64xx_start_rx_dma()
1051 struct s3c24xx_uart_dma *dma = p->dma; in s3c24xx_serial_request_dma() local
1111 dma->rx_addr = dma_map_single(dma->rx_chan->device->dev, dma->rx_buf, in s3c24xx_serial_request_dma()
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H A Dmsm_serial.c268 dma_unmap_single(dev, dma->phys, mapped, dma->dir); in msm_stop_dma()
281 memset(dma, 0, sizeof(*dma)); in msm_release_dma()
290 memset(dma, 0, sizeof(*dma)); in msm_release_dma()
338 memset(dma, 0, sizeof(*dma)); in msm_request_tx_dma()
391 memset(dma, 0, sizeof(*dma)); in msm_request_rx_dma()
455 dma_unmap_single(port->dev, dma->phys, dma->count, dma->dir); in msm_complete_tx_dma()
498 dma->desc = dmaengine_prep_slave_single(dma->chan, dma->phys, in msm_handle_tx_dma()
510 dma->cookie = dmaengine_submit(dma->desc); in msm_handle_tx_dma()
618 dma->phys = dma_map_single(uart->dev, dma->virt, in msm_start_rx_dma()
624 dma->desc = dmaengine_prep_slave_single(dma->chan, dma->phys, in msm_start_rx_dma()
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/openbmc/linux/drivers/tty/serial/8250/
H A D8250_mtk.c94 struct uart_8250_dma *dma = up->dma; in mtk8250_dma_rx_complete() local
107 dmaengine_tx_status(dma->rxchan, dma->rx_cookie, &state); in mtk8250_dma_rx_complete()
136 struct uart_8250_dma *dma = up->dma; in mtk8250_rx_dma() local
157 struct uart_8250_dma *dma = up->dma; in mtk8250_dma_enable() local
164 dma->rxconf.src_port_window_size = dma->rx_size; in mtk8250_dma_enable()
165 dma->rxconf.src_addr = dma->rx_addr; in mtk8250_dma_enable()
168 dma->txconf.dst_addr = dma->tx_addr; in mtk8250_dma_enable()
179 if (dmaengine_slave_config(dma->rxchan, &dma->rxconf) != 0) in mtk8250_dma_enable()
181 if (dmaengine_slave_config(dma->txchan, &dma->txconf) != 0) in mtk8250_dma_enable()
217 if (up->dma) in mtk8250_shutdown()
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/openbmc/linux/Documentation/translations/zh_CN/mm/
H A Dbalance.rst30 也就是说，内核应该尝试从直接映射池中满足对直接映射页的请求，而不是回退到dma池中，
31 这样就可以保持dma池为dma请求（不管是不是原子的）所填充。类似的争论也适用于高内存
32 和直接映射的页面。相反，如果有很多空闲的dma页，最好是通过从dma池中分配一个来满足
35 在2.2中，只有当空闲页总数低于总内存的1/64时，才会启动内存平衡/页面回收。如果dma
36 和常规内存的比例合适，即使dma区完全空了，也很可能不会进行平衡。2.2已经在不同内存
51 请注意，如果普通区的大小与dma区相比是巨大的，那么在决定是否平衡普通区的时候，考虑
52 空闲的dma页就变得不那么重要了。那么第一个解决方案就变得更有吸引力。
80 2. 实现一个类似于replace_with_highmem()的replace_with_regular()，以保留dma页面。
/openbmc/linux/sound/pci/
H A Datiixp.c359 dma->period_bytes = dma->periods = 0; /* clear */ in atiixp_build_dma_packets()
362 if (dma->periods == periods && dma->period_bytes == period_bytes) in atiixp_build_dma_packets()
664 readl(chip->remap_addr + dma->ops->dt_cur), dma->buf_addr); in snd_atiixp_pcm_pointer()
673 if (! dma->substream || ! dma->running) in snd_atiixp_xrun_dma()
684 if (! dma->substream || ! dma->running) in snd_atiixp_update_dma()
721 if (dma->running && dma->suspended && in snd_atiixp_pcm_trigger()
733 if (dma->running && dma->suspended) in snd_atiixp_pcm_trigger()
1027 if (snd_BUG_ON(!dma->ops || !dma->ops->enable_dma)) in snd_atiixp_pcm_open()
1061 if (snd_BUG_ON(!dma->ops || !dma->ops->enable_dma)) in snd_atiixp_pcm_close()
1490 if (dma->substream && dma->suspended) { in snd_atiixp_resume()
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H A Datiixp_modem.c326 dma->period_bytes = dma->periods = 0; /* clear */ in atiixp_build_dma_packets()
329 if (dma->periods == periods && dma->period_bytes == period_bytes) in atiixp_build_dma_packets()
613 readl(chip->remap_addr + dma->ops->dt_cur), dma->buf_addr); in snd_atiixp_pcm_pointer()
623 if (! dma->substream || ! dma->running) in snd_atiixp_xrun_dma()
635 if (! dma->substream || ! dma->running) in snd_atiixp_update_dma()
670 dma->running = 1; in snd_atiixp_pcm_trigger()
851 if (snd_BUG_ON(!dma->ops || !dma->ops->enable_dma)) in snd_atiixp_pcm_open()
854 if (dma->opened) in snd_atiixp_pcm_open()
872 dma->opened = 1; in snd_atiixp_pcm_open()
882 if (snd_BUG_ON(!dma->ops || !dma->ops->enable_dma)) in snd_atiixp_pcm_close()
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/openbmc/linux/drivers/i2c/busses/
H A Di2c-at91-master.c134 struct at91_twi_dma *dma = &dev->dma; in at91_twi_dma_cleanup() local
145 if (dma->buf_mapped) { in at91_twi_dma_cleanup()
197 struct at91_twi_dma *dma = &dev->dma; in at91_twi_write_data_dma() local
213 dma->buf_mapped = true; in at91_twi_write_data_dma()
336 struct at91_twi_dma *dma = &dev->dma; in at91_twi_read_data_dma() local
750 struct at91_twi_dma *dma = &dev->dma; in at91_twi_configure_dma() local
783 dma->chan_tx = NULL; in at91_twi_configure_dma()
790 dma->chan_rx = NULL; in at91_twi_configure_dma()
814 dma_chan_name(dma->chan_tx), dma_chan_name(dma->chan_rx)); in at91_twi_configure_dma()
821 if (dma->chan_rx) in at91_twi_configure_dma()
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/openbmc/linux/drivers/media/pci/ddbridge/
H A Dddbridge-core.c126 struct ddb_dma *dma = io->dma; in ddb_set_dma_table() local
137 dma->bufval = ((dma->div & 0x0f) << 16) | in ddb_set_dma_table()
201 oredi->dma, iredo->dma); in ddb_unredirect()
286 dma->vbuf[i], dma->pbuf[i]); in dma_free()
626 output->dma->pbuf[output->dma->cbuf], in ddb_output_write()
682 input->dma->pbuf[input->dma->cbuf], in ddb_input_read()
2133 dma = input->dma; in input_write_dvb()
2155 dma->cbuf = (dma->cbuf + 1) % dma2->num; in input_write_dvb()
2190 struct ddb_dma *dma = input->dma; in input_handler() local
2217 struct ddb_dma *dma = output->dma; in output_handler() local
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/openbmc/linux/drivers/dma/
H A DMakefile9 obj-$(CONFIG_DMA_ACPI) += acpi-dma.o
10 obj-$(CONFIG_DMA_OF) += of-dma.o
23 obj-$(CONFIG_AXI_DMAC) += dma-axi-dmac.o
26 obj-$(CONFIG_DMA_JZ4780) += dma-jz4780.o
27 obj-$(CONFIG_DMA_SA11X0) += sa11x0-dma.o
28 obj-$(CONFIG_DMA_SUN4I) += sun4i-dma.o
29 obj-$(CONFIG_DMA_SUN6I) += sun6i-dma.o
44 obj-$(CONFIG_IMX_DMA) += imx-dma.o
59 obj-$(CONFIG_MXS_DMA) += mxs-dma.o
61 obj-$(CONFIG_OWL_DMA) += owl-dma.o
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/openbmc/linux/drivers/gpu/drm/i915/
H A Di915_sw_fence_work.c13 dma_fence_signal(&f->dma); in fence_complete()
23 dma_fence_put(&f->dma); in fence_work()
34 dma_fence_set_error(&f->dma, fence->error); in fence_notify()
36 if (!f->dma.error) { in fence_notify()
37 dma_fence_get(&f->dma); in fence_notify()
38 if (test_bit(DMA_FENCE_WORK_IMM, &f->dma.flags)) in fence_notify()
48 dma_fence_put(&f->dma); in fence_notify()
62 struct dma_fence_work *f = container_of(fence, typeof(*f), dma); in get_timeline_name()
73 BUILD_BUG_ON(offsetof(typeof(*f), dma)); in fence_release()
74 dma_fence_free(&f->dma); in fence_release()
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/openbmc/linux/drivers/usb/core/
H A Dbuffer.c119 dma_addr_t *dma in hcd_buffer_alloc() argument
133 *dma = ~(dma_addr_t) 0; in hcd_buffer_alloc()
148 dma_addr_t dma in hcd_buffer_free() argument
169 dma_pool_free(hcd->pool[i], addr, dma); in hcd_buffer_free()
173 dma_free_coherent(hcd->self.sysdev, size, addr, dma); in hcd_buffer_free()
177 size_t size, gfp_t mem_flags, dma_addr_t *dma) in hcd_buffer_alloc_pages() argument
184 size, dma, PAGE_SIZE); in hcd_buffer_alloc_pages()
188 *dma = DMA_MAPPING_ERROR; in hcd_buffer_alloc_pages()
194 size, dma, mem_flags); in hcd_buffer_alloc_pages()
198 size_t size, void *addr, dma_addr_t dma) in hcd_buffer_free_pages() argument
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