diff options
| author | Linus Torvalds <torvalds@linux-foundation.org> | 2023-11-04 07:56:51 +0300 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2023-11-04 07:56:51 +0300 |
| commit | d934aef6bb9ec1b42dfe1f5c1f945fa0d2d0752c (patch) | |
| tree | d6a89c1ebe61ac1a1c6fd669babd3f7a659ca062 /drivers/dma | |
| parent | 2c40c1c6adab90ee4660caf03722b3a3ec67767b (diff) | |
| parent | 03f25d53b145bc2f7ccc82fc04e4482ed734f524 (diff) | |
| download | linux-d934aef6bb9ec1b42dfe1f5c1f945fa0d2d0752c.tar.xz | |
Merge tag 'dmaengine-6.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/dmaengine
Pull dmaengine updates from Vinod Koul:
- Big pile of __counted_by attribute annotations to several structures
for bounds checking of flexible arrays at run-time
- Another big pile platform remove callback returning void changes
- Device tree device_get_match_data() usage and dropping
of_match_device() calls
- Minor driver updates to pxa, idxd fsl, hisi etc drivers
* tag 'dmaengine-6.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/dmaengine: (106 commits)
dmaengine: stm32-mdma: correct desc prep when channel running
dmaengine: dw-axi-dmac: Add support DMAX_NUM_CHANNELS > 16
dmaengine: xilinx: xilinx_dma: Fix kernel doc about xilinx_dma_remove()
dmaengine: mmp_tdma: drop unused variable 'of_id'
MAINTAINERS: Add entries for NXP(Freescale) eDMA drivers
dmaengine: xilinx: xdma: Support cyclic transfers
dmaengine: xilinx: xdma: Prepare the introduction of cyclic transfers
dmaengine: Drop unnecessary of_match_device() calls
dmaengine: Use device_get_match_data()
dmaengine: pxa_dma: Annotate struct pxad_desc_sw with __counted_by
dmaengine: pxa_dma: Remove an erroneous BUG_ON() in pxad_free_desc()
dmaengine: xilinx: xdma: Use resource_size() in xdma_probe()
dmaengine: fsl-dpaa2-qdma: Remove redundant initialization owner in dpaa2_qdma_driver
dmaengine: Remove unused declaration dma_chan_cleanup()
dmaengine: mmp: fix Wvoid-pointer-to-enum-cast warning
dmaengine: qcom: fix Wvoid-pointer-to-enum-cast warning
dmaengine: fsl-edma: Remove redundant dev_err() for platform_get_irq()
dmaengine: ep93xx_dma: Annotate struct ep93xx_dma_engine with __counted_by
dmaengine: idxd: add wq driver name support for accel-config user tool
dmaengine: fsl-edma: Annotate struct struct fsl_edma_engine with __counted_by
...
Diffstat (limited to 'drivers/dma')
78 files changed, 563 insertions, 426 deletions
diff --git a/drivers/dma/Kconfig b/drivers/dma/Kconfig index 4ccae1a3b884..70ba506dabab 100644 --- a/drivers/dma/Kconfig +++ b/drivers/dma/Kconfig @@ -362,7 +362,7 @@ config INTEL_IOATDMA config K3_DMA tristate "Hisilicon K3 DMA support" - depends on ARCH_HI3xxx || ARCH_HISI || COMPILE_TEST + depends on ARCH_HISI || COMPILE_TEST select DMA_ENGINE select DMA_VIRTUAL_CHANNELS help diff --git a/drivers/dma/altera-msgdma.c b/drivers/dma/altera-msgdma.c index 4153c2edb049..a8e3615235b8 100644 --- a/drivers/dma/altera-msgdma.c +++ b/drivers/dma/altera-msgdma.c @@ -923,7 +923,7 @@ fail: * * Return: Always '0' */ -static int msgdma_remove(struct platform_device *pdev) +static void msgdma_remove(struct platform_device *pdev) { struct msgdma_device *mdev = platform_get_drvdata(pdev); @@ -933,8 +933,6 @@ static int msgdma_remove(struct platform_device *pdev) msgdma_dev_remove(mdev); dev_notice(&pdev->dev, "Altera mSGDMA driver removed\n"); - - return 0; } #ifdef CONFIG_OF @@ -952,7 +950,7 @@ static struct platform_driver msgdma_driver = { .of_match_table = of_match_ptr(msgdma_match), }, .probe = msgdma_probe, - .remove = msgdma_remove, + .remove_new = msgdma_remove, }; module_platform_driver(msgdma_driver); diff --git a/drivers/dma/apple-admac.c b/drivers/dma/apple-admac.c index 3af795635c5c..5b63996640d9 100644 --- a/drivers/dma/apple-admac.c +++ b/drivers/dma/apple-admac.c @@ -128,7 +128,7 @@ struct admac_data { int irq; int irq_index; int nchannels; - struct admac_chan channels[]; + struct admac_chan channels[] __counted_by(nchannels); }; struct admac_tx { @@ -925,7 +925,7 @@ free_reset: return err; } -static int admac_remove(struct platform_device *pdev) +static void admac_remove(struct platform_device *pdev) { struct admac_data *ad = platform_get_drvdata(pdev); @@ -933,8 +933,6 @@ static int admac_remove(struct platform_device *pdev) dma_async_device_unregister(&ad->dma); free_irq(ad->irq, ad); reset_control_rearm(ad->rstc); - - return 0; } static const struct of_device_id admac_of_match[] = { @@ -949,7 +947,7 @@ static struct platform_driver apple_admac_driver = { .of_match_table = admac_of_match, }, .probe = admac_probe, - .remove = admac_remove, + .remove_new = admac_remove, }; module_platform_driver(apple_admac_driver); diff --git a/drivers/dma/at_hdmac.c b/drivers/dma/at_hdmac.c index b2876f67471f..fb89ecbf0cc5 100644 --- a/drivers/dma/at_hdmac.c +++ b/drivers/dma/at_hdmac.c @@ -239,7 +239,7 @@ struct at_desc { bool memset_buffer; dma_addr_t memset_paddr; int *memset_vaddr; - struct atdma_sg sg[]; + struct atdma_sg sg[] __counted_by(sglen); }; /*-- Channels --------------------------------------------------------*/ @@ -2100,7 +2100,7 @@ err_irq: return err; } -static int at_dma_remove(struct platform_device *pdev) +static void at_dma_remove(struct platform_device *pdev) { struct at_dma *atdma = platform_get_drvdata(pdev); struct dma_chan *chan, *_chan; @@ -2122,8 +2122,6 @@ static int at_dma_remove(struct platform_device *pdev) } clk_disable_unprepare(atdma->clk); - - return 0; } static void at_dma_shutdown(struct platform_device *pdev) @@ -2242,7 +2240,7 @@ static const struct dev_pm_ops __maybe_unused at_dma_dev_pm_ops = { }; static struct platform_driver at_dma_driver = { - .remove = at_dma_remove, + .remove_new = at_dma_remove, .shutdown = at_dma_shutdown, .id_table = atdma_devtypes, .driver = { diff --git a/drivers/dma/at_xdmac.c b/drivers/dma/at_xdmac.c index c3b37168b21f..299396121e6d 100644 --- a/drivers/dma/at_xdmac.c +++ b/drivers/dma/at_xdmac.c @@ -2431,7 +2431,7 @@ err_free_irq: return ret; } -static int at_xdmac_remove(struct platform_device *pdev) +static void at_xdmac_remove(struct platform_device *pdev) { struct at_xdmac *atxdmac = (struct at_xdmac *)platform_get_drvdata(pdev); int i; @@ -2452,8 +2452,6 @@ static int at_xdmac_remove(struct platform_device *pdev) tasklet_kill(&atchan->tasklet); at_xdmac_free_chan_resources(&atchan->chan); } - - return 0; } static const struct dev_pm_ops __maybe_unused atmel_xdmac_dev_pm_ops = { @@ -2478,7 +2476,7 @@ MODULE_DEVICE_TABLE(of, atmel_xdmac_dt_ids); static struct platform_driver at_xdmac_driver = { .probe = at_xdmac_probe, - .remove = at_xdmac_remove, + .remove_new = at_xdmac_remove, .driver = { .name = "at_xdmac", .of_match_table = of_match_ptr(atmel_xdmac_dt_ids), diff --git a/drivers/dma/bcm-sba-raid.c b/drivers/dma/bcm-sba-raid.c index 94ea35330eb5..fbaacb4c19b2 100644 --- a/drivers/dma/bcm-sba-raid.c +++ b/drivers/dma/bcm-sba-raid.c @@ -1734,7 +1734,7 @@ fail_free_mchan: return ret; } -static int sba_remove(struct platform_device *pdev) +static void sba_remove(struct platform_device *pdev) { struct sba_device *sba = platform_get_drvdata(pdev); @@ -1745,8 +1745,6 @@ static int sba_remove(struct platform_device *pdev) sba_freeup_channel_resources(sba); mbox_free_channel(sba->mchan); - - return 0; } static const struct of_device_id sba_of_match[] = { @@ -1758,7 +1756,7 @@ MODULE_DEVICE_TABLE(of, sba_of_match); static struct platform_driver sba_driver = { .probe = sba_probe, - .remove = sba_remove, + .remove_new = sba_remove, .driver = { .name = "bcm-sba-raid", .of_match_table = sba_of_match, diff --git a/drivers/dma/bcm2835-dma.c b/drivers/dma/bcm2835-dma.c index 0807fb9eb262..9d74fe97452e 100644 --- a/drivers/dma/bcm2835-dma.c +++ b/drivers/dma/bcm2835-dma.c @@ -1019,19 +1019,17 @@ err_no_dma: return rc; } -static int bcm2835_dma_remove(struct platform_device *pdev) +static void bcm2835_dma_remove(struct platform_device *pdev) { struct bcm2835_dmadev *od = platform_get_drvdata(pdev); dma_async_device_unregister(&od->ddev); bcm2835_dma_free(od); - - return 0; } static struct platform_driver bcm2835_dma_driver = { .probe = bcm2835_dma_probe, - .remove = bcm2835_dma_remove, + .remove_new = bcm2835_dma_remove, .driver = { .name = "bcm2835-dma", .of_match_table = of_match_ptr(bcm2835_dma_of_match), diff --git a/drivers/dma/bestcomm/bestcomm.c b/drivers/dma/bestcomm/bestcomm.c index 80096f94032d..0bbaa7620bdd 100644 --- a/drivers/dma/bestcomm/bestcomm.c +++ b/drivers/dma/bestcomm/bestcomm.c @@ -455,7 +455,7 @@ error_ofput: } -static int mpc52xx_bcom_remove(struct platform_device *op) +static void mpc52xx_bcom_remove(struct platform_device *op) { /* Clean up the engine */ bcom_engine_cleanup(); @@ -473,8 +473,6 @@ static int mpc52xx_bcom_remove(struct platform_device *op) /* Release memory */ kfree(bcom_eng); bcom_eng = NULL; - - return 0; } static const struct of_device_id mpc52xx_bcom_of_match[] = { @@ -488,7 +486,7 @@ MODULE_DEVICE_TABLE(of, mpc52xx_bcom_of_match); static struct platform_driver mpc52xx_bcom_of_platform_driver = { .probe = mpc52xx_bcom_probe, - .remove = mpc52xx_bcom_remove, + .remove_new = mpc52xx_bcom_remove, .driver = { .name = DRIVER_NAME, .of_match_table = mpc52xx_bcom_of_match, diff --git a/drivers/dma/dma-axi-dmac.c b/drivers/dma/dma-axi-dmac.c index fc7cdad37161..2457a420c13d 100644 --- a/drivers/dma/dma-axi-dmac.c +++ b/drivers/dma/dma-axi-dmac.c @@ -117,7 +117,7 @@ struct axi_dmac_desc { unsigned int num_submitted; unsigned int num_completed; unsigned int num_sgs; - struct axi_dmac_sg sg[]; + struct axi_dmac_sg sg[] __counted_by(num_sgs); }; struct axi_dmac_chan { @@ -484,12 +484,11 @@ static struct axi_dmac_desc *axi_dmac_alloc_desc(unsigned int num_sgs) desc = kzalloc(struct_size(desc, sg, num_sgs), GFP_NOWAIT); if (!desc) return NULL; + desc->num_sgs = num_sgs; for (i = 0; i < num_sgs; i++) desc->sg[i].id = AXI_DMAC_SG_UNUSED; - desc->num_sgs = num_sgs; - return desc; } @@ -1029,7 +1028,7 @@ err_clk_disable: return ret; } -static int axi_dmac_remove(struct platform_device *pdev) +static void axi_dmac_remove(struct platform_device *pdev) { struct axi_dmac *dmac = platform_get_drvdata(pdev); @@ -1038,8 +1037,6 @@ static int axi_dmac_remove(struct platform_device *pdev) tasklet_kill(&dmac->chan.vchan.task); dma_async_device_unregister(&dmac->dma_dev); clk_disable_unprepare(dmac->clk); - - return 0; } static const struct of_device_id axi_dmac_of_match_table[] = { @@ -1054,7 +1051,7 @@ static struct platform_driver axi_dmac_driver = { .of_match_table = axi_dmac_of_match_table, }, .probe = axi_dmac_probe, - .remove = axi_dmac_remove, + .remove_new = axi_dmac_remove, }; module_platform_driver(axi_dmac_driver); diff --git a/drivers/dma/dma-jz4780.c b/drivers/dma/dma-jz4780.c index adbd47bd6adf..c9cfa341db51 100644 --- a/drivers/dma/dma-jz4780.c +++ b/drivers/dma/dma-jz4780.c @@ -1008,7 +1008,7 @@ err_disable_clk: return ret; } -static int jz4780_dma_remove(struct platform_device *pdev) +static void jz4780_dma_remove(struct platform_device *pdev) { struct jz4780_dma_dev *jzdma = platform_get_drvdata(pdev); int i; @@ -1020,8 +1020,6 @@ static int jz4780_dma_remove(struct platform_device *pdev) for (i = 0; i < jzdma->soc_data->nb_channels; i++) tasklet_kill(&jzdma->chan[i].vchan.task); - - return 0; } static const struct jz4780_dma_soc_data jz4740_dma_soc_data = { @@ -1124,7 +1122,7 @@ MODULE_DEVICE_TABLE(of, jz4780_dma_dt_match); static struct platform_driver jz4780_dma_driver = { .probe = jz4780_dma_probe, - .remove = jz4780_dma_remove, + .remove_new = jz4780_dma_remove, .driver = { .name = "jz4780-dma", .of_match_table = jz4780_dma_dt_match, diff --git a/drivers/dma/dw-axi-dmac/dw-axi-dmac-platform.c b/drivers/dma/dw-axi-dmac/dw-axi-dmac-platform.c index dd02f84e404d..a86a81ff0caa 100644 --- a/drivers/dma/dw-axi-dmac/dw-axi-dmac-platform.c +++ b/drivers/dma/dw-axi-dmac/dw-axi-dmac-platform.c @@ -63,6 +63,17 @@ static inline u32 axi_dma_ioread32(struct axi_dma_chip *chip, u32 reg) } static inline void +axi_dma_iowrite64(struct axi_dma_chip *chip, u32 reg, u64 val) +{ + iowrite64(val, chip->regs + reg); +} + +static inline u64 axi_dma_ioread64(struct axi_dma_chip *chip, u32 reg) +{ + return ioread64(chip->regs + reg); +} + +static inline void axi_chan_iowrite32(struct axi_dma_chan *chan, u32 reg, u32 val) { iowrite32(val, chan->chan_regs + reg); @@ -182,38 +193,73 @@ static inline u32 axi_chan_irq_read(struct axi_dma_chan *chan) static inline void axi_chan_disable(struct axi_dma_chan *chan) { - u32 val; - - val = axi_dma_ioread32(chan->chip, DMAC_CHEN); - val &= ~(BIT(chan->id) << DMAC_CHAN_EN_SHIFT); - if (chan->chip->dw->hdata->reg_map_8_channels) - val |= BIT(chan->id) << DMAC_CHAN_EN_WE_SHIFT; - else - val |= BIT(chan->id) << DMAC_CHAN_EN2_WE_SHIFT; - axi_dma_iowrite32(chan->chip, DMAC_CHEN, val); + u64 val; + + if (chan->chip->dw->hdata->nr_channels >= DMAC_CHAN_16) { + val = axi_dma_ioread64(chan->chip, DMAC_CHEN); + if (chan->id >= DMAC_CHAN_16) { + val &= ~((u64)(BIT(chan->id) >> DMAC_CHAN_16) + << (DMAC_CHAN_EN_SHIFT + DMAC_CHAN_BLOCK_SHIFT)); + val |= (u64)(BIT(chan->id) >> DMAC_CHAN_16) + << (DMAC_CHAN_EN2_WE_SHIFT + DMAC_CHAN_BLOCK_SHIFT); + } else { + val &= ~(BIT(chan->id) << DMAC_CHAN_EN_SHIFT); + val |= BIT(chan->id) << DMAC_CHAN_EN2_WE_SHIFT; + } + axi_dma_iowrite64(chan->chip, DMAC_CHEN, val); + } else { + val = axi_dma_ioread32(chan->chip, DMAC_CHEN); + val &= ~(BIT(chan->id) << DMAC_CHAN_EN_SHIFT); + if (chan->chip->dw->hdata->reg_map_8_channels) + val |= BIT(chan->id) << DMAC_CHAN_EN_WE_SHIFT; + else + val |= BIT(chan->id) << DMAC_CHAN_EN2_WE_SHIFT; + axi_dma_iowrite32(chan->chip, DMAC_CHEN, (u32)val); + } } static inline void axi_chan_enable(struct axi_dma_chan *chan) { - u32 val; - - val = axi_dma_ioread32(chan->chip, DMAC_CHEN); - if (chan->chip->dw->hdata->reg_map_8_channels) - val |= BIT(chan->id) << DMAC_CHAN_EN_SHIFT | - BIT(chan->id) << DMAC_CHAN_EN_WE_SHIFT; - else - val |= BIT(chan->id) << DMAC_CHAN_EN_SHIFT | + u64 val; + + if (chan->chip->dw->hdata->nr_channels >= DMAC_CHAN_16) { + val = axi_dma_ioread64(chan->chip, DMAC_CHEN); + if (chan->id >= DMAC_CHAN_16) { + val |= (u64)(BIT(chan->id) >> DMAC_CHAN_16) + << (DMAC_CHAN_EN_SHIFT + DMAC_CHAN_BLOCK_SHIFT) | + (u64)(BIT(chan->id) >> DMAC_CHAN_16) + << (DMAC_CHAN_EN2_WE_SHIFT + DMAC_CHAN_BLOCK_SHIFT); + } else { + val |= BIT(chan->id) << DMAC_CHAN_EN_SHIFT | BIT(chan->id) << DMAC_CHAN_EN2_WE_SHIFT; - axi_dma_iowrite32(chan->chip, DMAC_CHEN, val); + } + axi_dma_iowrite64(chan->chip, DMAC_CHEN, val); + } else { + val = axi_dma_ioread32(chan->chip, DMAC_CHEN); + if (chan->chip->dw->hdata->reg_map_8_channels) { + val |= BIT(chan->id) << DMAC_CHAN_EN_SHIFT | + BIT(chan->id) << DMAC_CHAN_EN_WE_SHIFT; + } else { + val |= BIT(chan->id) << DMAC_CHAN_EN_SHIFT | + BIT(chan->id) << DMAC_CHAN_EN2_WE_SHIFT; + } + axi_dma_iowrite32(chan->chip, DMAC_CHEN, (u32)val); + } } static inline bool axi_chan_is_hw_enable(struct axi_dma_chan *chan) { - u32 val; + u64 val; - val = axi_dma_ioread32(chan->chip, DMAC_CHEN); + if (chan->chip->dw->hdata->nr_channels >= DMAC_CHAN_16) + val = axi_dma_ioread64(chan->chip, DMAC_CHEN); + else + val = axi_dma_ioread32(chan->chip, DMAC_CHEN); - return !!(val & (BIT(chan->id) << DMAC_CHAN_EN_SHIFT)); + if (chan->id >= DMAC_CHAN_16) + return !!(val & ((u64)(BIT(chan->id) >> DMAC_CHAN_16) << DMAC_CHAN_BLOCK_SHIFT)); + else + return !!(val & (BIT(chan->id) << DMAC_CHAN_EN_SHIFT)); } static void axi_dma_hw_init(struct axi_dma_chip *chip) @@ -1175,20 +1221,34 @@ static int dma_chan_pause(struct dma_chan *dchan) struct axi_dma_chan *chan = dchan_to_axi_dma_chan(dchan); unsigned long flags; unsigned int timeout = 20; /* timeout iterations */ - u32 val; + u64 val; spin_lock_irqsave(&chan->vc.lock, flags); - if (chan->chip->dw->hdata->reg_map_8_channels) { - val = axi_dma_ioread32(chan->chip, DMAC_CHEN); - val |= BIT(chan->id) << DMAC_CHAN_SUSP_SHIFT | - BIT(chan->id) << DMAC_CHAN_SUSP_WE_SHIFT; - axi_dma_iowrite32(chan->chip, DMAC_CHEN, val); + if (chan->chip->dw->hdata->nr_channels >= DMAC_CHAN_16) { + val = axi_dma_ioread64(chan->chip, DMAC_CHSUSPREG); + if (chan->id >= DMAC_CHAN_16) { + val |= (u64)(BIT(chan->id) >> DMAC_CHAN_16) + << (DMAC_CHAN_SUSP2_SHIFT + DMAC_CHAN_BLOCK_SHIFT) | + (u64)(BIT(chan->id) >> DMAC_CHAN_16) + << (DMAC_CHAN_SUSP2_WE_SHIFT + DMAC_CHAN_BLOCK_SHIFT); + } else { + val |= BIT(chan->id) << DMAC_CHAN_SUSP2_SHIFT | + BIT(chan->id) << DMAC_CHAN_SUSP2_WE_SHIFT; + } + axi_dma_iowrite64(chan->chip, DMAC_CHSUSPREG, val); } else { - val = axi_dma_ioread32(chan->chip, DMAC_CHSUSPREG); - val |= BIT(chan->id) << DMAC_CHAN_SUSP2_SHIFT | + if (chan->chip->dw->hdata->reg_map_8_channels) { + val = axi_dma_ioread32(chan->chip, DMAC_CHEN); + val |= BIT(chan->id) << DMAC_CHAN_SUSP_SHIFT | + BIT(chan->id) << DMAC_CHAN_SUSP_WE_SHIFT; + axi_dma_iowrite32(chan->chip, DMAC_CHEN, (u32)val); + } else { + val = axi_dma_ioread32(chan->chip, DMAC_CHSUSPREG); + val |= BIT(chan->id) << DMAC_CHAN_SUSP2_SHIFT | BIT(chan->id) << DMAC_CHAN_SUSP2_WE_SHIFT; - axi_dma_iowrite32(chan->chip, DMAC_CHSUSPREG, val); + axi_dma_iowrite32(chan->chip, DMAC_CHSUSPREG, (u32)val); + } } do { @@ -1210,18 +1270,32 @@ static int dma_chan_pause(struct dma_chan *dchan) /* Called in chan locked context */ static inline void axi_chan_resume(struct axi_dma_chan *chan) { - u32 val; - - if (chan->chip->dw->hdata->reg_map_8_channels) { - val = axi_dma_ioread32(chan->chip, DMAC_CHEN); - val &= ~(BIT(chan->id) << DMAC_CHAN_SUSP_SHIFT); - val |= (BIT(chan->id) << DMAC_CHAN_SUSP_WE_SHIFT); - axi_dma_iowrite32(chan->chip, DMAC_CHEN, val); + u64 val; + + if (chan->chip->dw->hdata->nr_channels >= DMAC_CHAN_16) { + val = axi_dma_ioread64(chan->chip, DMAC_CHSUSPREG); + if (chan->id >= DMAC_CHAN_16) { + val &= ~((u64)(BIT(chan->id) >> DMAC_CHAN_16) + << (DMAC_CHAN_SUSP2_SHIFT + DMAC_CHAN_BLOCK_SHIFT)); + val |= ((u64)(BIT(chan->id) >> DMAC_CHAN_16) + << (DMAC_CHAN_SUSP2_WE_SHIFT + DMAC_CHAN_BLOCK_SHIFT)); + } else { + val &= ~(BIT(chan->id) << DMAC_CHAN_SUSP2_SHIFT); + val |= (BIT(chan->id) << DMAC_CHAN_SUSP2_WE_SHIFT); + } + axi_dma_iowrite64(chan->chip, DMAC_CHSUSPREG, val); } else { - val = axi_dma_ioread32(chan->chip, DMAC_CHSUSPREG); - val &= ~(BIT(chan->id) << DMAC_CHAN_SUSP2_SHIFT); - val |= (BIT(chan->id) << DMAC_CHAN_SUSP2_WE_SHIFT); - axi_dma_iowrite32(chan->chip, DMAC_CHSUSPREG, val); + if (chan->chip->dw->hdata->reg_map_8_channels) { + val = axi_dma_ioread32(chan->chip, DMAC_CHEN); + val &= ~(BIT(chan->id) << DMAC_CHAN_SUSP_SHIFT); + val |= (BIT(chan->id) << DMAC_CHAN_SUSP_WE_SHIFT); + axi_dma_iowrite32(chan->chip, DMAC_CHEN, (u32)val); + } else { + val = axi_dma_ioread32(chan->chip, DMAC_CHSUSPREG); + val &= ~(BIT(chan->id) << DMAC_CHAN_SUSP2_SHIFT); + val |= (BIT(chan->id) << DMAC_CHAN_SUSP2_WE_SHIFT); + axi_dma_iowrite32(chan->chip, DMAC_CHSUSPREG, (u32)val); + } } chan->is_paused = false; @@ -1535,7 +1609,7 @@ err_pm_disable: return ret; } -static int dw_remove(struct platform_device *pdev) +static void dw_remove(struct platform_device *pdev) { struct axi_dma_chip *chip = platform_get_drvdata(pdev); struct dw_axi_dma *dw = chip->dw; @@ -1564,8 +1638,6 @@ static int dw_remove(struct platform_device *pdev) list_del(&chan->vc.chan.device_node); tasklet_kill(&chan->vc.task); } - - return 0; } static const struct dev_pm_ops dw_axi_dma_pm_ops = { @@ -1588,7 +1660,7 @@ MODULE_DEVICE_TABLE(of, dw_dma_of_id_table); static struct platform_driver dw_driver = { .probe = dw_probe, - .remove = dw_remove, + .remove_new = dw_remove, .driver = { .name = KBUILD_MODNAME, .of_match_table = dw_dma_of_id_table, diff --git a/drivers/dma/dw-axi-dmac/dw-axi-dmac.h b/drivers/dma/dw-axi-dmac/dw-axi-dmac.h index eb267cb24f67..454904d99654 100644 --- a/drivers/dma/dw-axi-dmac/dw-axi-dmac.h +++ b/drivers/dma/dw-axi-dmac/dw-axi-dmac.h @@ -18,7 +18,7 @@ #include "../virt-dma.h" -#define DMAC_MAX_CHANNELS 16 +#define DMAC_MAX_CHANNELS 32 #define DMAC_MAX_MASTERS 2 #define DMAC_MAX_BLK_SIZE 0x200000 @@ -222,6 +222,10 @@ static inline struct axi_dma_chan *dchan_to_axi_dma_chan(struct dma_chan *dchan) /* DMAC_CHEN2 */ #define DMAC_CHAN_EN2_WE_SHIFT 16 +/* DMAC CHAN BLOCKS */ +#define DMAC_CHAN_BLOCK_SHIFT 32 +#define DMAC_CHAN_16 16 + /* DMAC_CHSUSP */ #define DMAC_CHAN_SUSP2_SHIFT 0 #define DMAC_CHAN_SUSP2_WE_SHIFT 16 diff --git a/drivers/dma/dw/platform.c b/drivers/dma/dw/platform.c index 47f2292dba98..7d9d4c951724 100644 --- a/drivers/dma/dw/platform.c +++ b/drivers/dma/dw/platform.c @@ -93,7 +93,7 @@ err_dw_dma_probe: return err; } -static int dw_remove(struct platform_device *pdev) +static void dw_remove(struct platform_device *pdev) { struct dw_dma_chip_pdata *data = platform_get_drvdata(pdev); struct dw_dma_chip *chip = data->chip; @@ -109,8 +109,6 @@ static int dw_remove(struct platform_device *pdev) pm_runtime_disable(&pdev->dev); clk_disable_unprepare(chip->clk); - - return 0; } static void dw_shutdown(struct platform_device *pdev) @@ -193,7 +191,7 @@ static const struct dev_pm_ops dw_dev_pm_ops = { static struct platform_driver dw_driver = { .probe = dw_probe, - .remove = dw_remove, + .remove_new = dw_remove, .shutdown = dw_shutdown, .driver = { .name = DRV_NAME, diff --git a/drivers/dma/ep93xx_dma.c b/drivers/dma/ep93xx_dma.c index 5c4a448a1254..d6c60635e90d 100644 --- a/drivers/dma/ep93xx_dma.c +++ b/drivers/dma/ep93xx_dma.c @@ -213,7 +213,7 @@ struct ep93xx_dma_engine { #define INTERRUPT_NEXT_BUFFER 2 size_t num_channels; - struct ep93xx_dma_chan channels[]; + struct ep93xx_dma_chan channels[] __counted_by(num_channels); }; static inline struct device *chan2dev(struct ep93xx_dma_chan *edmac) diff --git a/drivers/dma/fsl-dpaa2-qdma/dpaa2-qdma.c b/drivers/dma/fsl-dpaa2-qdma/dpaa2-qdma.c index a42a37634881..7958ac33e36c 100644 --- a/drivers/dma/fsl-dpaa2-qdma/dpaa2-qdma.c +++ b/drivers/dma/fsl-dpaa2-qdma/dpaa2-qdma.c @@ -814,7 +814,6 @@ static const struct fsl_mc_device_id dpaa2_qdma_id_table[] = { static struct fsl_mc_driver dpaa2_qdma_driver = { .driver = { .name = "dpaa2-qdma", - .owner = THIS_MODULE, }, .probe = dpaa2_qdma_probe, .remove = dpaa2_qdma_remove, diff --git a/drivers/dma/fsl-edma-common.h b/drivers/dma/fsl-edma-common.h index 40d50cc3d75a..bb5221158a77 100644 --- a/drivers/dma/fsl-edma-common.h +++ b/drivers/dma/fsl-edma-common.h @@ -225,7 +225,7 @@ struct fsl_edma_engine { bool big_endian; struct edma_regs regs; u64 chan_masked; - struct fsl_edma_chan chans[]; + struct fsl_edma_chan chans[] __counted_by(n_chans); }; #define edma_read_tcdreg(chan, __name) \ diff --git a/drivers/dma/fsl-edma-main.c b/drivers/dma/fsl-edma-main.c index 8c4ed7012e23..4635e16d7705 100644 --- a/drivers/dma/fsl-edma-main.c +++ b/drivers/dma/fsl-edma-main.c @@ -13,13 +13,11 @@ #include <linux/interrupt.h> #include <linux/clk.h> #include <linux/of.h> -#include <linux/of_device.h> -#include <linux/of_address.h> -#include <linux/of_irq.h> #include <linux/of_dma.h> #include <linux/dma-mapping.h> #include <linux/pm_runtime.h> #include <linux/pm_domain.h> +#include <linux/property.h> #include "fsl-edma-common.h" @@ -232,10 +230,8 @@ static int fsl_edma3_irq_init(struct platform_device *pdev, struct fsl_edma_engi /* request channel irq */ fsl_chan->txirq = platform_get_irq(pdev, i); - if (fsl_chan->txirq < 0) { - dev_err(&pdev->dev, "Can't get chan %d's irq.\n", i); + if (fsl_chan->txirq < 0) return -EINVAL; - } ret = devm_request_irq(&pdev->dev, fsl_chan->txirq, fsl_edma3_tx_handler, IRQF_SHARED, @@ -418,8 +414,6 @@ static int fsl_edma3_attach_pd(struct platform_device *pdev, struct fsl_edma_eng static int fsl_edma_probe(struct platform_device *pdev) { - const struct of_device_id *of_id = - of_match_device(fsl_edma_dt_ids, &pdev->dev); struct device_node *np = pdev->dev.of_node; struct fsl_edma_engine *fsl_edma; const struct fsl_edma_drvdata *drvdata = NULL; @@ -428,8 +422,7 @@ static int fsl_edma_probe(struct platform_device *pdev) int chans; int ret, i; - if (of_id) - drvdata = of_id->data; + drvdata = device_get_match_data(&pdev->dev); if (!drvdata) { dev_err(&pdev->dev, "unable to find driver data\n"); return -EINVAL; @@ -617,7 +610,7 @@ static int fsl_edma_probe(struct platform_device *pdev) return 0; } -static int fsl_edma_remove(struct platform_device *pdev) +static void fsl_edma_remove(struct platform_device *pdev) { struct device_node *np = pdev->dev.of_node; struct fsl_edma_engine *fsl_edma = platform_get_drvdata(pdev); @@ -627,8 +620,6 @@ static int fsl_edma_remove(struct platform_device *pdev) of_dma_controller_free(np); dma_async_device_unregister(&fsl_edma->dma_dev); fsl_disable_clocks(fsl_edma, fsl_edma->drvdata->dmamuxs); - - return 0; } static int fsl_edma_suspend_late(struct device *dev) @@ -692,7 +683,7 @@ static struct platform_driver fsl_edma_driver = { .pm = &fsl_edma_pm_ops, }, .probe = fsl_edma_probe, - .remove = fsl_edma_remove, + .remove_new = fsl_edma_remove, }; static int __init fsl_edma_init(void) diff --git a/drivers/dma/fsl-qdma.c b/drivers/dma/fsl-qdma.c index a8cc8a4bc610..47cb28468049 100644 --- a/drivers/dma/fsl-qdma.c +++ b/drivers/dma/fsl-qdma.c @@ -1266,7 +1266,7 @@ static void fsl_qdma_cleanup_vchan(struct dma_device *dmadev) } } -static int fsl_qdma_remove(struct platform_device *pdev) +static void fsl_qdma_remove(struct platform_device *pdev) { int i; struct fsl_qdma_queue *status; @@ -1283,7 +1283,6 @@ static int fsl_qdma_remove(struct platform_device *pdev) dma_free_coherent(&pdev->dev, sizeof(struct fsl_qdma_format) * status->n_cq, status->cq, status->bus_addr); } - return 0; } static const struct of_device_id fsl_qdma_dt_ids[] = { @@ -1298,7 +1297,7 @@ static struct platform_driver fsl_qdma_driver = { .of_match_table = fsl_qdma_dt_ids, }, .probe = fsl_qdma_probe, - .remove = fsl_qdma_remove, + .remove_new = fsl_qdma_remove, }; module_platform_driver(fsl_qdma_driver); diff --git a/drivers/dma/fsl_raid.c b/drivers/dma/fsl_raid.c index 0b9ca93ce3dc..014ff523d5ec 100644 --- a/drivers/dma/fsl_raid.c +++ b/drivers/dma/fsl_raid.c @@ -857,7 +857,7 @@ static void fsl_re_remove_chan(struct fsl_re_chan *chan) chan->oub_phys_addr); } -static int fsl_re_remove(struct platform_device *ofdev) +static void fsl_re_remove(struct platform_device *ofdev) { struct fsl_re_drv_private *re_priv; struct device *dev; @@ -872,8 +872,6 @@ static int fsl_re_remove(struct platform_device *ofdev) /* Unregister the driver */ dma_async_device_unregister(&re_priv->dma_dev); - - return 0; } static const struct of_device_id fsl_re_ids[] = { @@ -888,7 +886,7 @@ static struct platform_driver fsl_re_driver = { .of_match_table = fsl_re_ids, }, .probe = fsl_re_probe, - .remove = fsl_re_remove, + .remove_new = fsl_re_remove, }; module_platform_driver(fsl_re_driver); diff --git a/drivers/dma/fsldma.c b/drivers/dma/fsldma.c index ddcf736d283d..18a6c4bf6275 100644 --- a/drivers/dma/fsldma.c +++ b/drivers/dma/fsldma.c @@ -1306,7 +1306,7 @@ out_return: return err; } -static int fsldma_of_remove(struct platform_device *op) +static void fsldma_of_remove(struct platform_device *op) { struct fsldma_device *fdev; unsigned int i; @@ -1324,8 +1324,6 @@ static int fsldma_of_remove(struct platform_device *op) iounmap(fdev->regs); kfree(fdev); - - return 0; } #ifdef CONFIG_PM @@ -1406,7 +1404,7 @@ static struct platform_driver fsldma_of_driver = { #endif }, .probe = fsldma_of_probe, - .remove = fsldma_of_remove, + .remove_new = fsldma_of_remove, }; /*----------------------------------------------------------------------------*/ diff --git a/drivers/dma/hisi_dma.c b/drivers/dma/hisi_dma.c index c1350a36fddd..4c47bff81064 100644 --- a/drivers/dma/hisi_dma.c +++ b/drivers/dma/hisi_dma.c @@ -163,7 +163,7 @@ struct hisi_dma_dev { u32 chan_depth; enum hisi_dma_reg_layout reg_layout; void __iomem *queue_base; /* queue region start of register */ - struct hisi_dma_chan chan[]; + struct hisi_dma_chan chan[] __counted_by(chan_num); }; #ifdef CONFIG_DEBUG_FS diff --git a/drivers/dma/idma64.c b/drivers/dma/idma64.c index 0ac634a51c5e..78a938969d7d 100644 --- a/drivers/dma/idma64.c +++ b/drivers/dma/idma64.c @@ -660,13 +660,11 @@ static int idma64_platform_probe(struct platform_device *pdev) return 0; } -static int idma64_platform_remove(struct platform_device *pdev) +static void idma64_platform_remove(struct platform_device *pdev) { struct idma64_chip *chip = platform_get_drvdata(pdev); idma64_remove(chip); - - return 0; } static int __maybe_unused idma64_pm_suspend(struct device *dev) @@ -691,7 +689,7 @@ static const struct dev_pm_ops idma64_dev_pm_ops = { static struct platform_driver idma64_platform_driver = { .probe = idma64_platform_probe, - .remove = idma64_platform_remove, + .remove_new = idma64_platform_remove, .driver = { .name = LPSS_IDMA64_DRIVER_NAME, .pm = &idma64_dev_pm_ops, diff --git a/drivers/dma/idxd/Makefile b/drivers/dma/idxd/Makefile index dc096839ac63..c5e679070e46 100644 --- a/drivers/dma/idxd/Makefile +++ b/drivers/dma/idxd/Makefile @@ -1,12 +1,12 @@ ccflags-y += -DDEFAULT_SYMBOL_NAMESPACE=IDXD +obj-$(CONFIG_INTEL_IDXD_BUS) += idxd_bus.o +idxd_bus-y := bus.o + obj-$(CONFIG_INTEL_IDXD) += idxd.o idxd-y := init.o irq.o device.o sysfs.o submit.o dma.o cdev.o debugfs.o idxd-$(CONFIG_INTEL_IDXD_PERFMON) += perfmon.o -obj-$(CONFIG_INTEL_IDXD_BUS) += idxd_bus.o -idxd_bus-y := bus.o - obj-$(CONFIG_INTEL_IDXD_COMPAT) += idxd_compat.o idxd_compat-y := compat.o diff --git a/drivers/dma/idxd/cdev.c b/drivers/dma/idxd/cdev.c index d32deb9b4e3d..0423655f5a88 100644 --- a/drivers/dma/idxd/cdev.c +++ b/drivers/dma/idxd/cdev.c @@ -509,6 +509,7 @@ void idxd_wq_del_cdev(struct idxd_wq *wq) static int idxd_user_drv_probe(struct idxd_dev *idxd_dev) { + struct device *dev = &idxd_dev->conf_dev; struct idxd_wq *wq = idxd_dev_to_wq(idxd_dev); struct idxd_device *idxd = wq->idxd; int rc; @@ -536,6 +537,12 @@ static int idxd_user_drv_probe(struct idxd_dev *idxd_dev) mutex_lock(&wq->wq_lock); + if (!idxd_wq_driver_name_match(wq, dev)) { + idxd->cmd_status = IDXD_SCMD_WQ_NO_DRV_NAME; + rc = -ENODEV; + goto wq_err; + } + wq->wq = create_workqueue(dev_name(wq_confdev(wq))); if (!wq->wq) { rc = -ENOMEM; diff --git a/drivers/dma/idxd/dma.c b/drivers/dma/idxd/dma.c index 07623fb0f52f..47a01893cfdb 100644 --- a/drivers/dma/idxd/dma.c +++ b/drivers/dma/idxd/dma.c @@ -306,6 +306,12 @@ static int idxd_dmaengine_drv_probe(struct idxd_dev *idxd_dev) return -ENXIO; mutex_lock(&wq->wq_lock); + if (!idxd_wq_driver_name_match(wq, dev)) { + idxd->cmd_status = IDXD_SCMD_WQ_NO_DRV_NAME; + rc = -ENODEV; + goto err; + } + wq->type = IDXD_WQT_KERNEL; rc = drv_enable_wq(wq); diff --git a/drivers/dma/idxd/idxd.h b/drivers/dma/idxd/idxd.h index e269ca1f4862..1e89c80a07fc 100644 --- a/drivers/dma/idxd/idxd.h +++ b/drivers/dma/idxd/idxd.h @@ -159,6 +159,8 @@ struct idxd_cdev { int minor; }; +#define DRIVER_NAME_SIZE 128 + #define IDXD_ALLOCATED_BATCH_SIZE 128U #define WQ_NAME_SIZE 1024 #define WQ_TYPE_SIZE 10 @@ -227,6 +229,8 @@ struct idxd_wq { /* Lock to protect upasid_xa access. */ struct mutex uc_lock; struct xarray upasid_xa; + + char driver_name[DRIVER_NAME_SIZE + 1]; }; struct idxd_engine { @@ -646,6 +650,11 @@ static inline void idxd_wqcfg_set_max_batch_shift(int idxd_type, union wqcfg *wq wqcfg->max_batch_shift = max_batch_shift; } +static inline int idxd_wq_driver_name_match(struct idxd_wq *wq, struct device *dev) +{ + return (strncmp(wq->driver_name, dev->driver->name, strlen(dev->driver->name)) == 0); +} + int __must_check __idxd_driver_register(struct idxd_device_driver *idxd_drv, struct module *module, const char *mod_name); #define idxd_driver_register(driver) \ diff --git a/drivers/dma/idxd/irq.c b/drivers/dma/idxd/irq.c index b501320a9c7a..2183d7f9cdbd 100644 --- a/drivers/dma/idxd/irq.c +++ b/drivers/dma/idxd/irq.c @@ -434,8 +434,8 @@ irqreturn_t idxd_misc_thread(int vec, void *data) val |= IDXD_INTC_ERR; for (i = 0; i < 4; i++) - dev_warn(dev, "err[%d]: %#16.16llx\n", - i, idxd->sw_err.bits[i]); + dev_warn_ratelimited(dev, "err[%d]: %#16.16llx\n", + i, idxd->sw_err.bits[i]); err = true; } diff --git a/drivers/dma/idxd/sysfs.c b/drivers/dma/idxd/sysfs.c index 7caba90d85b3..523ae0dff7d4 100644 --- a/drivers/dma/idxd/sysfs.c +++ b/drivers/dma/idxd/sysfs.c @@ -1259,6 +1259,39 @@ err: static struct device_attribute dev_attr_wq_op_config = __ATTR(op_config, 0644, wq_op_config_show, wq_op_config_store); +static ssize_t wq_driver_name_show(struct device *dev, struct device_attribute *attr, char *buf) +{ + struct idxd_wq *wq = confdev_to_wq(dev); + + return sysfs_emit(buf, "%s\n", wq->driver_name); +} + +static ssize_t wq_driver_name_store(struct device *dev, struct device_attribute *attr, + const char *buf, size_t count) +{ + struct idxd_wq *wq = confdev_to_wq(dev); + char *input, *pos; + + if (wq->state != IDXD_WQ_DISABLED) + return -EPERM; + + if (strlen(buf) > DRIVER_NAME_SIZE || strlen(buf) == 0) + return -EINVAL; + + input = kstrndup(buf, count, GFP_KERNEL); + if (!input) + return -ENOMEM; + + pos = strim(input); + memset(wq->driver_name, 0, DRIVER_NAME_SIZE + 1); + sprintf(wq->driver_name, "%s", pos); + kfree(input); + return count; +} + +static struct device_attribute dev_attr_wq_driver_name = + __ATTR(driver_name, 0644, wq_driver_name_show, wq_driver_name_store); + static struct attribute *idxd_wq_attributes[] = { &dev_attr_wq_clients.attr, &dev_attr_wq_state.attr, @@ -1278,6 +1311,7 @@ static struct attribute *idxd_wq_attributes[] = { &dev_attr_wq_occupancy.attr, &dev_attr_wq_enqcmds_retries.attr, &dev_attr_wq_op_config.attr, + &dev_attr_wq_driver_name.attr, NULL, }; diff --git a/drivers/dma/img-mdc-dma.c b/drivers/dma/img-mdc-dma.c index 9be0d3226e19..0532dd2640dc 100644 --- a/drivers/dma/img-mdc-dma.c +++ b/drivers/dma/img-mdc-dma.c @@ -1017,7 +1017,7 @@ suspend: return ret; } -static int mdc_dma_remove(struct platform_device *pdev) +static void mdc_dma_remove(struct platform_device *pdev) { struct mdc_dma *mdma = platform_get_drvdata(pdev); struct mdc_chan *mchan, *next; @@ -1037,8 +1037,6 @@ static int mdc_dma_remove(struct platform_device *pdev) pm_runtime_disable(&pdev->dev); if (!pm_runtime_status_suspended(&pdev->dev)) img_mdc_runtime_suspend(&pdev->dev); - - return 0; } #ifdef CONFIG_PM_SLEEP @@ -1078,7 +1076,7 @@ static struct platform_driver mdc_dma_driver = { .of_match_table = of_match_ptr(mdc_dma_of_match), }, .probe = mdc_dma_probe, - .remove = mdc_dma_remove, + .remove_new = mdc_dma_remove, }; module_platform_driver(mdc_dma_driver); diff --git a/drivers/dma/imx-dma.c b/drivers/dma/imx-dma.c index 114f254b9f50..ebf7c115d553 100644 --- a/drivers/dma/imx-dma.c +++ b/drivers/dma/imx-dma.c @@ -1216,7 +1216,7 @@ static void imxdma_free_irq(struct platform_device *pdev, struct imxdma_engine * } } -static int imxdma_remove(struct platform_device *pdev) +static void imxdma_remove(struct platform_device *pdev) { struct imxdma_engine *imxdma = platform_get_drvdata(pdev); @@ -1229,8 +1229,6 @@ static int imxdma_remove(struct platform_device *pdev) clk_disable_unprepare(imxdma->dma_ipg); clk_disable_unprepare(imxdma->dma_ahb); - - return 0; } static struct platform_driver imxdma_driver = { @@ -1238,7 +1236,7 @@ static struct platform_driver imxdma_driver = { .name = "imx-dma", .of_match_table = imx_dma_of_dev_id, }, - .remove = imxdma_remove, + .remove_new = imxdma_remove, }; static int __init imxdma_module_init(void) diff --git a/drivers/dma/imx-sdma.c b/drivers/dma/imx-sdma.c index 51012bd39900..f81ecf5863e8 100644 --- a/drivers/dma/imx-sdma.c +++ b/drivers/dma/imx-sdma.c @@ -2358,7 +2358,7 @@ err_clk: return ret; } -static int sdma_remove(struct platform_device *pdev) +static void sdma_remove(struct platform_device *pdev) { struct sdma_engine *sdma = platform_get_drvdata(pdev); int i; @@ -2377,7 +2377,6 @@ static int sdma_remove(struct platform_device *pdev) } platform_set_drvdata(pdev, NULL); - return 0; } static struct platform_driver sdma_driver = { @@ -2385,7 +2384,7 @@ static struct platform_driver sdma_driver = { .name = "imx-sdma", .of_match_table = sdma_dt_ids, }, - .remove = sdma_remove, + .remove_new = sdma_remove, .probe = sdma_probe, }; diff --git a/drivers/dma/k3dma.c b/drivers/dma/k3dma.c index ecdaada95120..5de8c21d41e7 100644 --- a/drivers/dma/k3dma.c +++ b/drivers/dma/k3dma.c @@ -15,7 +15,6 @@ #include <linux/platform_device.h> #include <linux/slab.h> #include <linux/spinlock.h> -#include <linux/of_device.h> #include <linux/of.h> #include <linux/clk.h> #include <linux/of_dma.h> @@ -839,7 +838,6 @@ static int k3_dma_probe(struct platform_device *op) { const struct k3dma_soc_data *soc_data; struct k3_dma_dev *d; - const struct of_device_id *of_id; int i, ret, irq = 0; d = devm_kzalloc(&op->dev, sizeof(*d), GFP_KERNEL); @@ -854,19 +852,16 @@ static int k3_dma_probe(struct platform_device *op) if (IS_ERR(d->base)) return PTR_ERR(d->base); - of_id = of_match_device(k3_pdma_dt_ids, &op->dev); - if (of_id) { - of_property_read_u32((&op->dev)->of_node, - "dma-channels", &d->dma_channels); - of_property_read_u32((&op->dev)->of_node, - "dma-requests", &d->dma_requests); - ret = of_property_read_u32((&op->dev)->of_node, - "dma-channel-mask", &d->dma_channel_mask); - if (ret) { - dev_warn(&op->dev, - "dma-channel-mask doesn't exist, considering all as available.\n"); - d->dma_channel_mask = (u32)~0UL; - } + of_property_read_u32((&op->dev)->of_node, + "dma-channels", &d->dma_channels); + of_property_read_u32((&op->dev)->of_node, + "dma-requests", &d->dma_requests); + ret = of_property_read_u32((&op->dev)->of_node, + "dma-channel-mask", &d->dma_channel_mask); + if (ret) { + dev_warn(&op->dev, + "dma-channel-mask doesn't exist, considering all as available.\n"); + d->dma_channel_mask = (u32)~0UL; } if (!(soc_data->flags & K3_FLAG_NOCLK)) { @@ -974,7 +969,7 @@ dma_async_register_fail: return ret; } -static int k3_dma_remove(struct platform_device *op) +static void k3_dma_remove(struct platform_device *op) { struct k3_dma_chan *c, *cn; struct k3_dma_dev *d = platform_get_drvdata(op); @@ -990,7 +985,6 @@ static int k3_dma_remove(struct platform_device *op) } tasklet_kill(&d->task); clk_disable_unprepare(d->clk); - return 0; } #ifdef CONFIG_PM_SLEEP @@ -1034,7 +1028,7 @@ static struct platform_driver k3_pdma_driver = { .of_match_table = k3_pdma_dt_ids, }, .probe = k3_dma_probe, - .remove = k3_dma_remove, + .remove_new = k3_dma_remove, }; module_platform_driver(k3_pdma_driver); diff --git a/drivers/dma/mcf-edma-main.c b/drivers/dma/mcf-edma-main.c index b359421ee9ea..ab21455d9c3a 100644 --- a/drivers/dma/mcf-edma-main.c +++ b/drivers/dma/mcf-edma-main.c @@ -255,15 +255,13 @@ static int mcf_edma_probe(struct platform_device *pdev) return 0; } -static int mcf_edma_remove(struct platform_device *pdev) +static void mcf_edma_remove(struct platform_device *pdev) { struct fsl_edma_engine *mcf_edma = platform_get_drvdata(pdev); mcf_edma_irq_free(pdev, mcf_edma); fsl_edma_cleanup_vchan(&mcf_edma->dma_dev); dma_async_device_unregister(&mcf_edma->dma_dev); - - return 0; } static struct platform_driver mcf_edma_driver = { @@ -271,7 +269,7 @@ static struct platform_driver mcf_edma_driver = { .name = "mcf-edma", }, .probe = mcf_edma_probe, - .remove = mcf_edma_remove, + .remove_new = mcf_edma_remove, }; bool mcf_edma_filter_fn(struct dma_chan *chan, void *param) diff --git a/drivers/dma/mediatek/mtk-cqdma.c b/drivers/dma/mediatek/mtk-cqdma.c index 324b7387b1b9..529100c5b9f5 100644 --- a/drivers/dma/mediatek/mtk-cqdma.c +++ b/drivers/dma/mediatek/mtk-cqdma.c @@ -885,7 +885,7 @@ err_unregister: return err; } -static int mtk_cqdma_remove(struct platform_device *pdev) +static void mtk_cqdma_remove(struct platform_device *pdev) { struct mtk_cqdma_device *cqdma = platform_get_drvdata(pdev); struct mtk_cqdma_vchan *vc; @@ -918,13 +918,11 @@ static int mtk_cqdma_remove(struct platform_device *pdev) dma_async_device_unregister(&cqdma->ddev); of_dma_controller_free(pdev->dev.of_node); - - return 0; } static struct platform_driver mtk_cqdma_driver = { .probe = mtk_cqdma_probe, - .remove = mtk_cqdma_remove, + .remove_new = mtk_cqdma_remove, .driver = { .name = KBUILD_MODNAME, .of_match_table = mtk_cqdma_match, diff --git a/drivers/dma/mediatek/mtk-hsdma.c b/drivers/dma/mediatek/mtk-hsdma.c index 64120767d983..36ff11e909ea 100644 --- a/drivers/dma/mediatek/mtk-hsdma.c +++ b/drivers/dma/mediatek/mtk-hsdma.c @@ -1009,7 +1009,7 @@ err_unregister: return err; } -static int mtk_hsdma_remove(struct platform_device *pdev) +static void mtk_hsdma_remove(struct platform_device *pdev) { struct mtk_hsdma_device *hsdma = platform_get_drvdata(pdev); struct mtk_hsdma_vchan *vc; @@ -1034,13 +1034,11 @@ static int mtk_hsdma_remove(struct platform_device *pdev) dma_async_device_unregister(&hsdma->ddev); of_dma_controller_free(pdev->dev.of_node); - - return 0; } static struct platform_driver mtk_hsdma_driver = { .probe = mtk_hsdma_probe, - .remove = mtk_hsdma_remove, + .remove_new = mtk_hsdma_remove, .driver = { .name = KBUILD_MODNAME, .of_match_table = mtk_hsdma_match, diff --git a/drivers/dma/mediatek/mtk-uart-apdma.c b/drivers/dma/mediatek/mtk-uart-apdma.c index 06d12ac39144..1bdc1500be40 100644 --- a/drivers/dma/mediatek/mtk-uart-apdma.c +++ b/drivers/dma/mediatek/mtk-uart-apdma.c @@ -572,7 +572,7 @@ err_no_dma: return rc; } -static int mtk_uart_apdma_remove(struct platform_device *pdev) +static void mtk_uart_apdma_remove(struct platform_device *pdev) { struct mtk_uart_apdmadev *mtkd = platform_get_drvdata(pdev); @@ -583,8 +583,6 @@ static int mtk_uart_apdma_remove(struct platform_device *pdev) dma_async_device_unregister(&mtkd->ddev); pm_runtime_disable(&pdev->dev); - - return 0; } #ifdef CONFIG_PM_SLEEP @@ -639,7 +637,7 @@ static const struct dev_pm_ops mtk_uart_apdma_pm_ops = { static struct platform_driver mtk_uart_apdma_driver = { .probe = mtk_uart_apdma_probe, - .remove = mtk_uart_apdma_remove, + .remove_new = mtk_uart_apdma_remove, .driver = { .name = KBUILD_MODNAME, .pm = &mtk_uart_apdma_pm_ops, diff --git a/drivers/dma/mmp_pdma.c b/drivers/dma/mmp_pdma.c index ebdfdcbb4f7a..136fcaeff8dd 100644 --- a/drivers/dma/mmp_pdma.c +++ b/drivers/dma/mmp_pdma.c @@ -15,7 +15,6 @@ #include <linux/device.h> #include <linux/platform_data/mmp_dma.h> #include <linux/dmapool.h> -#include <linux/of_device.h> #include <linux/of_dma.h> #include <linux/of.h> @@ -932,7 +931,7 @@ static void dma_do_tasklet(struct tasklet_struct *t) } } -static int mmp_pdma_remove(struct platform_device *op) +static void mmp_pdma_remove(struct platform_device *op) { struct mmp_pdma_device *pdev = platform_get_drvdata(op); struct mmp_pdma_phy *phy; @@ -958,7 +957,6 @@ static int mmp_pdma_remove(struct platform_device *op) } dma_async_device_unregister(&pdev->device); - return 0; } static int mmp_pdma_chan_init(struct mmp_pdma_device *pdev, int idx, int irq) @@ -1020,7 +1018,6 @@ static struct dma_chan *mmp_pdma_dma_xlate(struct of_phandle_args *dma_spec, static int mmp_pdma_probe(struct platform_device *op) { struct mmp_pdma_device *pdev; - const struct of_device_id *of_id; struct mmp_dma_platdata *pdata = dev_get_platdata(&op->dev); int i, ret, irq = 0; int dma_channels = 0, irq_num = 0; @@ -1040,8 +1037,7 @@ static int mmp_pdma_probe(struct platform_device *op) if (IS_ERR(pdev->base)) return PTR_ERR(pdev->base); - of_id = of_match_device(mmp_pdma_dt_ids, pdev->dev); - if (of_id) { + if (pdev->dev->of_node) { /* Parse new and deprecated dma-channels properties */ if (of_property_read_u32(pdev->dev->of_node, "dma-channels", &dma_channels)) @@ -1141,7 +1137,7 @@ static struct platform_driver mmp_pdma_driver = { }, .id_table = mmp_pdma_id_table, .probe = mmp_pdma_probe, - .remove = mmp_pdma_remove, + .remove_new = mmp_pdma_remove, }; module_platform_driver(mmp_pdma_driver); diff --git a/drivers/dma/mmp_tdma.c b/drivers/dma/mmp_tdma.c index d49fa6bc6775..b76fe99e1151 100644 --- a/drivers/dma/mmp_tdma.c +++ b/drivers/dma/mmp_tdma.c @@ -14,9 +14,9 @@ #include <linux/slab.h> #include <linux/dmaengine.h> #include <linux/platform_device.h> +#include <linux/property.h> #include <linux/device.h> #include <linux/genalloc.h> -#include <linux/of_device.h> #include <linux/of_dma.h> #include "dmaengine.h" @@ -552,12 +552,10 @@ static void mmp_tdma_issue_pending(struct dma_chan *chan) mmp_tdma_enable_chan(tdmac); } -static int mmp_tdma_remove(struct platform_device *pdev) +static void mmp_tdma_remove(struct platform_device *pdev) { if (pdev->dev.of_node) of_dma_controller_free(pdev->dev.of_node); - - return 0; } static int mmp_tdma_chan_init(struct mmp_tdma_device *tdev, @@ -637,18 +635,13 @@ MODULE_DEVICE_TABLE(of, mmp_tdma_dt_ids); static int mmp_tdma_probe(struct platform_device *pdev) { enum mmp_tdma_type type; - const struct of_device_id *of_id; struct mmp_tdma_device *tdev; int i, ret; int irq = 0, irq_num = 0; int chan_num = TDMA_CHANNEL_NUM; struct gen_pool *pool = NULL; - of_id = of_match_device(mmp_tdma_dt_ids, &pdev->dev); - if (of_id) - type = (enum mmp_tdma_type) of_id->data; - else - type = platform_get_device_id(pdev)->driver_data; + type = (enum mmp_tdma_type)device_get_match_data(&pdev->dev); /* always have couple channels */ tdev = devm_kzalloc(&pdev->dev, sizeof(*tdev), GFP_KERNEL); @@ -726,34 +719,24 @@ static int mmp_tdma_probe(struct platform_device *pdev) return ret; } - if (pdev->dev.of_node) { - ret = of_dma_controller_register(pdev->dev.of_node, - mmp_tdma_xlate, tdev); - if (ret) { - dev_err(tdev->device.dev, - "failed to register controller\n"); - return ret; - } + ret = of_dma_controller_register(pdev->dev.of_node, + mmp_tdma_xlate, tdev); + if (ret) { + dev_err(tdev->device.dev, "failed to register controller\n"); + return ret; } dev_info(tdev->device.dev, "initialized\n"); return 0; } -static const struct platform_device_id mmp_tdma_id_table[] = { - { "mmp-adma", MMP_AUD_TDMA }, - { "pxa910-squ", PXA910_SQU }, - { }, -}; - static struct platform_driver mmp_tdma_driver = { .driver = { .name = "mmp-tdma", .of_match_table = mmp_tdma_dt_ids, }, - .id_table = mmp_tdma_id_table, .probe = mmp_tdma_probe, - .remove = mmp_tdma_remove, + .remove_new = mmp_tdma_remove, }; module_platform_driver(mmp_tdma_driver); diff --git a/drivers/dma/moxart-dma.c b/drivers/dma/moxart-dma.c index 7565ad98ba66..c48d68cbff92 100644 --- a/drivers/dma/moxart-dma.c +++ b/drivers/dma/moxart-dma.c @@ -124,7 +124,7 @@ struct moxart_desc { unsigned int dma_cycles; struct virt_dma_desc vd; uint8_t es; - struct moxart_sg sg[]; + struct moxart_sg sg[] __counted_by(sglen); }; struct moxart_chan { @@ -309,6 +309,7 @@ static struct dma_async_tx_descriptor *moxart_prep_slave_sg( d = kzalloc(struct_size(d, sg, sg_len), GFP_ATOMIC); if (!d) return NULL; + d->sglen = sg_len; d->dma_dir = dir; d->dev_addr = dev_addr; @@ -319,8 +320,6 @@ static struct dma_async_tx_descriptor *moxart_prep_slave_sg( d->sg[i].len = sg_dma_len(sgent); } - d->sglen = sg_len; - ch->error = 0; return vchan_tx_prep(&ch->vc, &d->vd, tx_flags); @@ -630,7 +629,7 @@ static int moxart_probe(struct platform_device *pdev) return 0; } -static int moxart_remove(struct platform_device *pdev) +static void moxart_remove(struct platform_device *pdev) { struct moxart_dmadev *m = platform_get_drvdata(pdev); @@ -640,8 +639,6 @@ static int moxart_remove(struct platform_device *pdev) if (pdev->dev.of_node) of_dma_controller_free(pdev->dev.of_node); - - return 0; } static const struct of_device_id moxart_dma_match[] = { @@ -652,7 +649,7 @@ MODULE_DEVICE_TABLE(of, moxart_dma_match); static struct platform_driver moxart_driver = { .probe = moxart_probe, - .remove = moxart_remove, + .remove_new = moxart_remove, .driver = { .name = "moxart-dma-engine", .of_match_table = moxart_dma_match, diff --git a/drivers/dma/mpc512x_dma.c b/drivers/dma/mpc512x_dma.c index 1104017320b8..68c247a46321 100644 --- a/drivers/dma/mpc512x_dma.c +++ b/drivers/dma/mpc512x_dma.c @@ -1084,7 +1084,7 @@ err: return retval; } -static int mpc_dma_remove(struct platform_device *op) +static void mpc_dma_remove(struct platform_device *op) { struct device *dev = &op->dev; struct mpc_dma *mdma = dev_get_drvdata(dev); @@ -1099,8 +1099,6 @@ static int mpc_dma_remove(struct platform_device *op) free_irq(mdma->irq, mdma); irq_dispose_mapping(mdma->irq); tasklet_kill(&mdma->tasklet); - - return 0; } static const struct of_device_id mpc_dma_match[] = { @@ -1112,7 +1110,7 @@ MODULE_DEVICE_TABLE(of, mpc_dma_match); static struct platform_driver mpc_dma_driver = { .probe = mpc_dma_probe, - .remove = mpc_dma_remove, + .remove_new = mpc_dma_remove, .driver = { .name = DRV_NAME, .of_match_table = mpc_dma_match, diff --git a/drivers/dma/mv_xor.c b/drivers/dma/mv_xor.c index 23b232b57518..bcd3b623ac6c 100644 --- a/drivers/dma/mv_xor.c +++ b/drivers/dma/mv_xor.c @@ -10,8 +10,8 @@ #include <linux/dma-mapping.h> #include <linux/spinlock.h> #include <linux/interrupt.h> -#include <linux/of_device.h> #include <linux/platform_device.h> +#include <linux/property.h> #include <linux/memory.h> #include <linux/clk.h> #include <linux/of.h> @@ -1328,13 +1328,8 @@ static int mv_xor_probe(struct platform_device *pdev) * setting up. In non-dt case it can only be the legacy one. */ xordev->xor_type = XOR_ORION; - if (pdev->dev.of_node) { - const struct of_device_id *of_id = - of_match_device(mv_xor_dt_ids, - &pdev->dev); - - xordev->xor_type = (uintptr_t)of_id->data; - } + if (pdev->dev.of_node) + xordev->xor_type = (uintptr_t)device_get_match_data(&pdev->dev); /* * (Re-)program MBUS remapping windows if we are asked to. diff --git a/drivers/dma/mv_xor_v2.c b/drivers/dma/mv_xor_v2.c index 0e1e9ca1c005..1ebfbe88e733 100644 --- a/drivers/dma/mv_xor_v2.c +++ b/drivers/dma/mv_xor_v2.c @@ -855,7 +855,7 @@ free_msi_irqs: return ret; } -static int mv_xor_v2_remove(struct platform_device *pdev) +static void mv_xor_v2_remove(struct platform_device *pdev) { struct mv_xor_v2_device *xor_dev = platform_get_drvdata(pdev); @@ -870,8 +870,6 @@ static int mv_xor_v2_remove(struct platform_device *pdev) platform_msi_domain_free_irqs(&pdev->dev); tasklet_kill(&xor_dev->irq_tasklet); - - return 0; } #ifdef CONFIG_OF @@ -886,7 +884,7 @@ static struct platform_driver mv_xor_v2_driver = { .probe = mv_xor_v2_probe, .suspend = mv_xor_v2_suspend, .resume = mv_xor_v2_resume, - .remove = mv_xor_v2_remove, + .remove_new = mv_xor_v2_remove, .driver = { .name = "mv_xor_v2", .of_match_table = of_match_ptr(mv_xor_v2_dt_ids), diff --git a/drivers/dma/nbpfaxi.c b/drivers/dma/nbpfaxi.c index 0b2f96fd8bf0..c08916339aa7 100644 --- a/drivers/dma/nbpfaxi.c +++ b/drivers/dma/nbpfaxi.c @@ -1454,7 +1454,7 @@ e_clk_off: return ret; } -static int nbpf_remove(struct platform_device *pdev) +static void nbpf_remove(struct platform_device *pdev) { struct nbpf_device *nbpf = platform_get_drvdata(pdev); int i; @@ -1472,8 +1472,6 @@ static int nbpf_remove(struct platform_device *pdev) of_dma_controller_free(pdev->dev.of_node); dma_async_device_unregister(&nbpf->dma_dev); clk_disable_unprepare(nbpf->clk); - - return 0; } static const struct platform_device_id nbpf_ids[] = { @@ -1517,7 +1515,7 @@ static struct platform_driver nbpf_driver = { }, .id_table = nbpf_ids, .probe = nbpf_probe, - .remove = nbpf_remove, + .remove_new = nbpf_remove, }; module_platform_driver(nbpf_driver); diff --git a/drivers/dma/owl-dma.c b/drivers/dma/owl-dma.c index 384476757c5e..4e76c4ec2d39 100644 --- a/drivers/dma/owl-dma.c +++ b/drivers/dma/owl-dma.c @@ -1231,7 +1231,7 @@ err_pool_free: return ret; } -static int owl_dma_remove(struct platform_device *pdev) +static void owl_dma_remove(struct platform_device *pdev) { struct owl_dma *od = platform_get_drvdata(pdev); @@ -1248,13 +1248,11 @@ static int owl_dma_remove(struct platform_device *pdev) clk_disable_unprepare(od->clk); dma_pool_destroy(od->lli_pool); - - return 0; } static struct platform_driver owl_dma_driver = { .probe = owl_dma_probe, - .remove = owl_dma_remove, + .remove_new = owl_dma_remove, .driver = { .name = "dma-owl", .of_match_table = of_match_ptr(owl_dma_match), diff --git a/drivers/dma/ppc4xx/adma.c b/drivers/dma/ppc4xx/adma.c index f9b82dff3387..bbb60a970dab 100644 --- a/drivers/dma/ppc4xx/adma.c +++ b/drivers/dma/ppc4xx/adma.c @@ -4230,7 +4230,7 @@ out: /** * ppc440spe_adma_remove - remove the asynch device */ -static int ppc440spe_adma_remove(struct platform_device *ofdev) +static void ppc440spe_adma_remove(struct platform_device *ofdev) { struct ppc440spe_adma_device *adev = platform_get_drvdata(ofdev); struct device_node *np = ofdev->dev.of_node; @@ -4278,7 +4278,6 @@ static int ppc440spe_adma_remove(struct platform_device *ofdev) of_address_to_resource(np, 0, &res); release_mem_region(res.start, resource_size(&res)); kfree(adev); - return 0; } /* @@ -4550,7 +4549,7 @@ MODULE_DEVICE_TABLE(of, ppc440spe_adma_of_match); static struct platform_driver ppc440spe_adma_driver = { .probe = ppc440spe_adma_probe, - .remove = ppc440spe_adma_remove, + .remove_new = ppc440spe_adma_remove, .driver = { .name = "PPC440SP(E)-ADMA", .of_match_table = ppc440spe_adma_of_match, diff --git a/drivers/dma/pxa_dma.c b/drivers/dma/pxa_dma.c index 1b046d9a3a26..31f8da810c05 100644 --- a/drivers/dma/pxa_dma.c +++ b/drivers/dma/pxa_dma.c @@ -15,9 +15,8 @@ #include <linux/device.h> #include <linux/platform_data/mmp_dma.h> #include <linux/dmapool.h> -#include <linux/of_device.h> -#include <linux/of_dma.h> #include <linux/of.h> +#include <linux/of_dma.h> #include <linux/wait.h> #include <linux/dma/pxa-dma.h> @@ -91,7 +90,8 @@ struct pxad_desc_sw { bool cyclic; struct dma_pool *desc_pool; /* Channel's used allocator */ - struct pxad_desc_hw *hw_desc[]; /* DMA coherent descriptors */ + struct pxad_desc_hw *hw_desc[] __counted_by(nb_desc); + /* DMA coherent descriptors */ }; struct pxad_phy { @@ -722,7 +722,6 @@ static void pxad_free_desc(struct virt_dma_desc *vd) dma_addr_t dma; struct pxad_desc_sw *sw_desc = to_pxad_sw_desc(vd); - BUG_ON(sw_desc->nb_desc == 0); for (i = sw_desc->nb_desc - 1; i >= 0; i--) { if (i > 0) dma = sw_desc->hw_desc[i - 1]->ddadr; @@ -740,6 +739,7 @@ pxad_alloc_desc(struct pxad_chan *chan, unsigned int nb_hw_desc) { struct pxad_desc_sw *sw_desc; dma_addr_t dma; + void *desc; int i; sw_desc = kzalloc(struct_size(sw_desc, hw_desc, nb_hw_desc), @@ -749,20 +749,21 @@ pxad_alloc_desc(struct pxad_chan *chan, unsigned int nb_hw_desc) sw_desc->desc_pool = chan->desc_pool; for (i = 0; i < nb_hw_desc; i++) { - sw_desc->hw_desc[i] = dma_pool_alloc(sw_desc->desc_pool, - GFP_NOWAIT, &dma); - if (!sw_desc->hw_desc[i]) { + desc = dma_pool_alloc(sw_desc->desc_pool, GFP_NOWAIT, &dma); + if (!desc) { dev_err(&chan->vc.chan.dev->device, "%s(): Couldn't allocate the %dth hw_desc from dma_pool %p\n", __func__, i, sw_desc->desc_pool); goto err; } + sw_desc->nb_desc++; + sw_desc->hw_desc[i] = desc; + if (i == 0) sw_desc->first = dma; else sw_desc->hw_desc[i - 1]->ddadr = dma; - sw_desc->nb_desc++; } return sw_desc; @@ -1221,13 +1222,12 @@ static void pxad_free_channels(struct dma_device *dmadev) } } -static int pxad_remove(struct platform_device *op) +static void pxad_remove(struct platform_device *op) { struct pxad_device *pdev = platform_get_drvdata(op); pxad_cleanup_debugfs(pdev); pxad_free_channels(&pdev->slave); - return 0; } static int pxad_init_phys(struct platform_device *op, @@ -1343,7 +1343,6 @@ static int pxad_init_dmadev(struct platform_device *op, static int pxad_probe(struct platform_device *op) { struct pxad_device *pdev; - const struct of_device_id *of_id; const struct dma_slave_map *slave_map = NULL; struct mmp_dma_platdata *pdata = dev_get_platdata(&op->dev); int ret, dma_channels = 0, nb_requestors = 0, slave_map_cnt = 0; @@ -1361,8 +1360,7 @@ static int pxad_probe(struct platform_device *op) if (IS_ERR(pdev->base)) return PTR_ERR(pdev->base); - of_id = of_match_device(pxad_dt_ids, &op->dev); - if (of_id) { + if (op->dev.of_node) { /* Parse new and deprecated dma-channels properties */ if (of_property_read_u32(op->dev.of_node, "dma-channels", &dma_channels)) @@ -1444,7 +1442,7 @@ static struct platform_driver pxad_driver = { }, .id_table = pxad_id_table, .probe = pxad_probe, - .remove = pxad_remove, + .remove_new = pxad_remove, }; static bool pxad_filter_fn(struct dma_chan *chan, void *param) diff --git a/drivers/dma/qcom/bam_dma.c b/drivers/dma/qcom/bam_dma.c index 4c3eb972039d..5e7d332731e0 100644 --- a/drivers/dma/qcom/bam_dma.c +++ b/drivers/dma/qcom/bam_dma.c @@ -74,7 +74,7 @@ struct bam_async_desc { struct list_head desc_node; enum dma_transfer_direction dir; size_t length; - struct bam_desc_hw desc[]; + struct bam_desc_hw desc[] __counted_by(num_desc); }; enum bam_reg { @@ -1386,7 +1386,7 @@ err_disable_clk: return ret; } -static int bam_dma_remove(struct platform_device *pdev) +static void bam_dma_remove(struct platform_device *pdev) { struct bam_device *bdev = platform_get_drvdata(pdev); u32 i; @@ -1416,8 +1416,6 @@ static int bam_dma_remove(struct platform_device *pdev) tasklet_kill(&bdev->task); clk_disable_unprepare(bdev->bamclk); - - return 0; } static int __maybe_unused bam_dma_runtime_suspend(struct device *dev) @@ -1475,7 +1473,7 @@ static const struct dev_pm_ops bam_dma_pm_ops = { static struct platform_driver bam_dma_driver = { .probe = bam_dma_probe, - .remove = bam_dma_remove, + .remove_new = bam_dma_remove, .driver = { .name = "bam-dma-engine", .pm = &bam_dma_pm_ops, diff --git a/drivers/dma/qcom/hidma.c b/drivers/dma/qcom/hidma.c index 834ae519c15d..d63b93dc7047 100644 --- a/drivers/dma/qcom/hidma.c +++ b/drivers/dma/qcom/hidma.c @@ -745,7 +745,7 @@ static bool hidma_test_capability(struct device *dev, enum hidma_cap test_cap) { enum hidma_cap cap; - cap = (enum hidma_cap) device_get_match_data(dev); + cap = (uintptr_t) device_get_match_data(dev); return cap ? ((cap & test_cap) > 0) : 0; } @@ -915,7 +915,7 @@ static void hidma_shutdown(struct platform_device *pdev) } -static int hidma_remove(struct platform_device *pdev) +static void hidma_remove(struct platform_device *pdev) { struct hidma_dev *dmadev = platform_get_drvdata(pdev); @@ -935,8 +935,6 @@ static int hidma_remove(struct platform_device *pdev) dev_info(&pdev->dev, "HI-DMA engine removed\n"); pm_runtime_put_sync_suspend(&pdev->dev); pm_runtime_disable(&pdev->dev); - - return 0; } #if IS_ENABLED(CONFIG_ACPI) @@ -960,7 +958,7 @@ MODULE_DEVICE_TABLE(of, hidma_match); static struct platform_driver hidma_driver = { .probe = hidma_probe, - .remove = hidma_remove, + .remove_new = hidma_remove, .shutdown = hidma_shutdown, .driver = { .name = "hidma", diff --git a/drivers/dma/qcom/qcom_adm.c b/drivers/dma/qcom/qcom_adm.c index d56caf1681ff..53f4273b657c 100644 --- a/drivers/dma/qcom/qcom_adm.c +++ b/drivers/dma/qcom/qcom_adm.c @@ -904,7 +904,7 @@ err_disable_core_clk: return ret; } -static int adm_dma_remove(struct platform_device *pdev) +static void adm_dma_remove(struct platform_device *pdev) { struct adm_device *adev = platform_get_drvdata(pdev); struct adm_chan *achan; @@ -927,8 +927,6 @@ static int adm_dma_remove(struct platform_device *pdev) clk_disable_unprepare(adev->core_clk); clk_disable_unprepare(adev->iface_clk); - - return 0; } static const struct of_device_id adm_of_match[] = { @@ -939,7 +937,7 @@ MODULE_DEVICE_TABLE(of, adm_of_match); static struct platform_driver adm_dma_driver = { .probe = adm_dma_probe, - .remove = adm_dma_remove, + .remove_new = adm_dma_remove, .driver = { .name = "adm-dma-engine", .of_match_table = adm_of_match, diff --git a/drivers/dma/sa11x0-dma.c b/drivers/dma/sa11x0-dma.c index a29c13cae716..01e656c69e6c 100644 --- a/drivers/dma/sa11x0-dma.c +++ b/drivers/dma/sa11x0-dma.c @@ -78,7 +78,7 @@ struct sa11x0_dma_desc { bool cyclic; unsigned sglen; - struct sa11x0_dma_sg sg[]; + struct sa11x0_dma_sg sg[] __counted_by(sglen); }; struct sa11x0_dma_phy; @@ -558,6 +558,7 @@ static struct dma_async_tx_descriptor *sa11x0_dma_prep_slave_sg( dev_dbg(chan->device->dev, "vchan %p: kzalloc failed\n", &c->vc); return NULL; } + txd->sglen = j; j = 0; for_each_sg(sg, sgent, sglen, i) { @@ -593,7 +594,6 @@ static struct dma_async_tx_descriptor *sa11x0_dma_prep_slave_sg( txd->ddar = c->ddar; txd->size = size; - txd->sglen = j; dev_dbg(chan->device->dev, "vchan %p: txd %p: size %zu nr %u\n", &c->vc, &txd->vd, txd->size, txd->sglen); @@ -628,6 +628,7 @@ static struct dma_async_tx_descriptor *sa11x0_dma_prep_dma_cyclic( dev_dbg(chan->device->dev, "vchan %p: kzalloc failed\n", &c->vc); return NULL; } + txd->sglen = sglen; for (i = k = 0; i < size / period; i++) { size_t tlen, len = period; @@ -653,7 +654,6 @@ static struct dma_async_tx_descriptor *sa11x0_dma_prep_dma_cyclic( txd->ddar = c->ddar; txd->size = size; - txd->sglen = sglen; txd->cyclic = 1; txd->period = sgperiod; @@ -984,7 +984,7 @@ static int sa11x0_dma_probe(struct platform_device *pdev) return ret; } -static int sa11x0_dma_remove(struct platform_device *pdev) +static void sa11x0_dma_remove(struct platform_device *pdev) { struct sa11x0_dma_dev *d = platform_get_drvdata(pdev); unsigned pch; @@ -997,8 +997,6 @@ static int sa11x0_dma_remove(struct platform_device *pdev) tasklet_kill(&d->task); iounmap(d->base); kfree(d); - - return 0; } static __maybe_unused int sa11x0_dma_suspend(struct device *dev) @@ -1081,7 +1079,7 @@ static struct platform_driver sa11x0_dma_driver = { .pm = &sa11x0_dma_pm_ops, }, .probe = sa11x0_dma_probe, - .remove = sa11x0_dma_remove, + .remove_new = sa11x0_dma_remove, }; static int __init sa11x0_dma_init(void) diff --git a/drivers/dma/sf-pdma/sf-pdma.c b/drivers/dma/sf-pdma/sf-pdma.c index d1c6956af452..3125a2f162b4 100644 --- a/drivers/dma/sf-pdma/sf-pdma.c +++ b/drivers/dma/sf-pdma/sf-pdma.c @@ -566,7 +566,7 @@ static int sf_pdma_probe(struct platform_device *pdev) return 0; } -static int sf_pdma_remove(struct platform_device *pdev) +static void sf_pdma_remove(struct platform_device *pdev) { struct sf_pdma *pdma = platform_get_drvdata(pdev); struct sf_pdma_chan *ch; @@ -584,8 +584,6 @@ static int sf_pdma_remove(struct platform_device *pdev) } dma_async_device_unregister(&pdma->dma_dev); - - return 0; } static const struct of_device_id sf_pdma_dt_ids[] = { @@ -597,7 +595,7 @@ MODULE_DEVICE_TABLE(of, sf_pdma_dt_ids); static struct platform_driver sf_pdma_driver = { .probe = sf_pdma_probe, - .remove = sf_pdma_remove, + .remove_new = sf_pdma_remove, .driver = { .name = "sf-pdma", .of_match_table = sf_pdma_dt_ids, diff --git a/drivers/dma/sf-pdma/sf-pdma.h b/drivers/dma/sf-pdma/sf-pdma.h index 5c398a83b491..d05772b5d8d3 100644 --- a/drivers/dma/sf-pdma/sf-pdma.h +++ b/drivers/dma/sf-pdma/sf-pdma.h @@ -113,7 +113,7 @@ struct sf_pdma { void __iomem *membase; void __iomem *mappedbase; u32 n_chans; - struct sf_pdma_chan chans[]; + struct sf_pdma_chan chans[] __counted_by(n_chans); }; #endif /* _SF_PDMA_H */ diff --git a/drivers/dma/sh/rcar-dmac.c b/drivers/dma/sh/rcar-dmac.c index 641d689d17ff..40482cb73d79 100644 --- a/drivers/dma/sh/rcar-dmac.c +++ b/drivers/dma/sh/rcar-dmac.c @@ -1990,7 +1990,7 @@ err_pm_disable: return ret; } -static int rcar_dmac_remove(struct platform_device *pdev) +static void rcar_dmac_remove(struct platform_device *pdev) { struct rcar_dmac *dmac = platform_get_drvdata(pdev); @@ -1998,8 +1998,6 @@ static int rcar_dmac_remove(struct platform_device *pdev) dma_async_device_unregister(&dmac->engine); pm_runtime_disable(&pdev->dev); - - return 0; } static void rcar_dmac_shutdown(struct platform_device *pdev) @@ -2041,7 +2039,7 @@ static struct platform_driver rcar_dmac_driver = { .of_match_table = rcar_dmac_of_ids, }, .probe = rcar_dmac_probe, - .remove = rcar_dmac_remove, + .remove_new = rcar_dmac_remove, .shutdown = rcar_dmac_shutdown, }; diff --git a/drivers/dma/sh/rz-dmac.c b/drivers/dma/sh/rz-dmac.c index f777addda8ba..fea5bda34bc2 100644 --- a/drivers/dma/sh/rz-dmac.c +++ b/drivers/dma/sh/rz-dmac.c @@ -969,7 +969,7 @@ err_pm_disable: return ret; } -static int rz_dmac_remove(struct platform_device *pdev) +static void rz_dmac_remove(struct platform_device *pdev) { struct rz_dmac *dmac = platform_get_drvdata(pdev); unsigned int i; @@ -987,8 +987,6 @@ static int rz_dmac_remove(struct platform_device *pdev) reset_control_assert(dmac->rstc); pm_runtime_put(&pdev->dev); pm_runtime_disable(&pdev->dev); - - return 0; } static const struct of_device_id of_rz_dmac_match[] = { @@ -1003,7 +1001,7 @@ static struct platform_driver rz_dmac_driver = { .of_match_table = of_rz_dmac_match, }, .probe = rz_dmac_probe, - .remove = rz_dmac_remove, + .remove_new = rz_dmac_remove, }; module_platform_driver(rz_dmac_driver); diff --git a/drivers/dma/sh/shdmac.c b/drivers/dma/sh/shdmac.c index 00067b29e232..7cc9eb2217e8 100644 --- a/drivers/dma/sh/shdmac.c +++ b/drivers/dma/sh/shdmac.c @@ -882,7 +882,7 @@ eshdma: return err; } -static int sh_dmae_remove(struct platform_device *pdev) +static void sh_dmae_remove(struct platform_device *pdev) { struct sh_dmae_device *shdev = platform_get_drvdata(pdev); struct dma_device *dma_dev = &shdev->shdma_dev.dma_dev; @@ -899,8 +899,6 @@ static int sh_dmae_remove(struct platform_device *pdev) shdma_cleanup(&shdev->shdma_dev); synchronize_rcu(); - - return 0; } static struct platform_driver sh_dmae_driver = { @@ -908,7 +906,7 @@ static struct platform_driver sh_dmae_driver = { .pm = &sh_dmae_pm, .name = SH_DMAE_DRV_NAME, }, - .remove = sh_dmae_remove, + .remove_new = sh_dmae_remove, }; static int __init sh_dmae_init(void) diff --git a/drivers/dma/sh/usb-dmac.c b/drivers/dma/sh/usb-dmac.c index b14cf350b669..a9b4302f6050 100644 --- a/drivers/dma/sh/usb-dmac.c +++ b/drivers/dma/sh/usb-dmac.c @@ -57,7 +57,7 @@ struct usb_dmac_desc { u32 residue; struct list_head node; dma_cookie_t done_cookie; - struct usb_dmac_sg sg[]; + struct usb_dmac_sg sg[] __counted_by(sg_allocated_len); }; #define to_usb_dmac_desc(vd) container_of(vd, struct usb_dmac_desc, vd) @@ -866,7 +866,7 @@ static void usb_dmac_chan_remove(struct usb_dmac *dmac, devm_free_irq(dmac->dev, uchan->irq, uchan); } -static int usb_dmac_remove(struct platform_device *pdev) +static void usb_dmac_remove(struct platform_device *pdev) { struct usb_dmac *dmac = platform_get_drvdata(pdev); int i; @@ -877,8 +877,6 @@ static int usb_dmac_remove(struct platform_device *pdev) dma_async_device_unregister(&dmac->engine); pm_runtime_disable(&pdev->dev); - - return 0; } static void usb_dmac_shutdown(struct platform_device *pdev) @@ -901,7 +899,7 @@ static struct platform_driver usb_dmac_driver = { .of_match_table = usb_dmac_of_ids, }, .probe = usb_dmac_probe, - .remove = usb_dmac_remove, + .remove_new = usb_dmac_remove, .shutdown = usb_dmac_shutdown, }; diff --git a/drivers/dma/sprd-dma.c b/drivers/dma/sprd-dma.c index 168aa0bd73a0..3f54ff37c5e0 100644 --- a/drivers/dma/sprd-dma.c +++ b/drivers/dma/sprd-dma.c @@ -212,7 +212,7 @@ struct sprd_dma_dev { struct clk *ashb_clk; int irq; u32 total_chns; - struct sprd_dma_chn channels[]; + struct sprd_dma_chn channels[] __counted_by(total_chns); }; static void sprd_dma_free_desc(struct virt_dma_desc *vd); @@ -572,8 +572,7 @@ static void sprd_dma_stop(struct sprd_dma_chn *schan) schan->cur_desc = NULL; } -static bool sprd_dma_check_trans_done(struct sprd_dma_desc *sdesc, - enum sprd_dma_int_type int_type, +static bool sprd_dma_check_trans_done(enum sprd_dma_int_type int_type, enum sprd_dma_req_mode req_mode) { if (int_type == SPRD_DMA_NO_INT) @@ -619,8 +618,7 @@ static irqreturn_t dma_irq_handle(int irq, void *dev_id) vchan_cyclic_callback(&sdesc->vd); } else { /* Check if the dma request descriptor is done. */ - trans_done = sprd_dma_check_trans_done(sdesc, int_type, - req_type); + trans_done = sprd_dma_check_trans_done(int_type, req_type); if (trans_done == true) { vchan_cookie_complete(&sdesc->vd); schan->cur_desc = NULL; @@ -1117,6 +1115,15 @@ static int sprd_dma_probe(struct platform_device *pdev) u32 chn_count; int ret, i; + ret = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(36)); + if (ret) { + ret = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32)); + if (ret) { + dev_err(&pdev->dev, "unable to set coherent mask to 32\n"); + return ret; + } + } + /* Parse new and deprecated dma-channels properties */ ret = device_property_read_u32(&pdev->dev, "dma-channels", &chn_count); if (ret) @@ -1232,7 +1239,7 @@ err_rpm: return ret; } -static int sprd_dma_remove(struct platform_device *pdev) +static void sprd_dma_remove(struct platform_device *pdev) { struct sprd_dma_dev *sdev = platform_get_drvdata(pdev); struct sprd_dma_chn *c, *cn; @@ -1255,7 +1262,6 @@ static int sprd_dma_remove(struct platform_device *pdev) pm_runtime_put_noidle(&pdev->dev); pm_runtime_disable(&pdev->dev); - return 0; } static const struct of_device_id sprd_dma_match[] = { @@ -1292,7 +1298,7 @@ static const struct dev_pm_ops sprd_dma_pm_ops = { static struct platform_driver sprd_dma_driver = { .probe = sprd_dma_probe, - .remove = sprd_dma_remove, + .remove_new = sprd_dma_remove, .driver = { .name = "sprd-dma", .of_match_table = sprd_dma_match, diff --git a/drivers/dma/st_fdma.c b/drivers/dma/st_fdma.c index d95c421877fb..8880b5e336f8 100644 --- a/drivers/dma/st_fdma.c +++ b/drivers/dma/st_fdma.c @@ -10,9 +10,10 @@ #include <linux/init.h> #include <linux/module.h> -#include <linux/of_device.h> +#include <linux/of.h> #include <linux/of_dma.h> #include <linux/platform_device.h> +#include <linux/property.h> #include <linux/interrupt.h> #include <linux/remoteproc.h> #include <linux/slab.h> @@ -739,18 +740,11 @@ static void st_fdma_free(struct st_fdma_dev *fdev) static int st_fdma_probe(struct platform_device *pdev) { struct st_fdma_dev *fdev; - const struct of_device_id *match; struct device_node *np = pdev->dev.of_node; const struct st_fdma_driverdata *drvdata; int ret, i; - match = of_match_device((st_fdma_match), &pdev->dev); - if (!match || !match->data) { - dev_err(&pdev->dev, "No device match found\n"); - return -ENODEV; - } - - drvdata = match->data; + drvdata = device_get_match_data(&pdev->dev); fdev = devm_kzalloc(&pdev->dev, sizeof(*fdev), GFP_KERNEL); if (!fdev) @@ -849,15 +843,13 @@ err: return ret; } -static int st_fdma_remove(struct platform_device *pdev) +static void st_fdma_remove(struct platform_device *pdev) { struct st_fdma_dev *fdev = platform_get_drvdata(pdev); devm_free_irq(&pdev->dev, fdev->irq, fdev); st_slim_rproc_put(fdev->slim_rproc); of_dma_controller_free(pdev->dev.of_node); - - return 0; } static struct platform_driver st_fdma_platform_driver = { @@ -866,7 +858,7 @@ static struct platform_driver st_fdma_platform_driver = { .of_match_table = st_fdma_match, }, .probe = st_fdma_probe, - .remove = st_fdma_remove, + .remove_new = st_fdma_remove, }; module_platform_driver(st_fdma_platform_driver); diff --git a/drivers/dma/st_fdma.h b/drivers/dma/st_fdma.h index fa15b97a3bab..f296412e96b6 100644 --- a/drivers/dma/st_fdma.h +++ b/drivers/dma/st_fdma.h @@ -97,7 +97,7 @@ struct st_fdma_desc { struct st_fdma_chan *fchan; bool iscyclic; unsigned int n_nodes; - struct st_fdma_sw_node node[]; + struct st_fdma_sw_node node[] __counted_by(n_nodes); }; enum st_fdma_type { diff --git a/drivers/dma/stm32-dma.c b/drivers/dma/stm32-dma.c index 0b30151fb45c..72d83cd9ed6b 100644 --- a/drivers/dma/stm32-dma.c +++ b/drivers/dma/stm32-dma.c @@ -21,7 +21,6 @@ #include <linux/list.h> #include <linux/module.h> #include <linux/of.h> -#include <linux/of_device.h> #include <linux/of_dma.h> #include <linux/platform_device.h> #include <linux/pm_runtime.h> @@ -191,7 +190,7 @@ struct stm32_dma_desc { struct virt_dma_desc vdesc; bool cyclic; u32 num_sgs; - struct stm32_dma_sg_req sg_req[]; + struct stm32_dma_sg_req sg_req[] __counted_by(num_sgs); }; /** @@ -1105,6 +1104,7 @@ static struct dma_async_tx_descriptor *stm32_dma_prep_slave_sg( desc = kzalloc(struct_size(desc, sg_req, sg_len), GFP_NOWAIT); if (!desc) return NULL; + desc->num_sgs = sg_len; /* Set peripheral flow controller */ if (chan->dma_sconfig.device_fc) @@ -1143,8 +1143,6 @@ static struct dma_async_tx_descriptor *stm32_dma_prep_slave_sg( desc->sg_req[i].chan_reg.dma_sm1ar += sg_dma_len(sg); desc->sg_req[i].chan_reg.dma_sndtr = nb_data_items; } - - desc->num_sgs = sg_len; desc->cyclic = false; return vchan_tx_prep(&chan->vchan, &desc->vdesc, flags); @@ -1218,6 +1216,7 @@ static struct dma_async_tx_descriptor *stm32_dma_prep_dma_cyclic( desc = kzalloc(struct_size(desc, sg_req, num_periods), GFP_NOWAIT); if (!desc) return NULL; + desc->num_sgs = num_periods; for (i = 0; i < num_periods; i++) { desc->sg_req[i].len = period_len; @@ -1234,8 +1233,6 @@ static struct dma_async_tx_descriptor *stm32_dma_prep_dma_cyclic( if (!chan->trig_mdma) buf_addr += period_len; } - - desc->num_sgs = num_periods; desc->cyclic = true; return vchan_tx_prep(&chan->vchan, &desc->vdesc, flags); @@ -1256,6 +1253,7 @@ static struct dma_async_tx_descriptor *stm32_dma_prep_dma_memcpy( desc = kzalloc(struct_size(desc, sg_req, num_sgs), GFP_NOWAIT); if (!desc) return NULL; + desc->num_sgs = num_sgs; threshold = chan->threshold; @@ -1285,8 +1283,6 @@ static struct dma_async_tx_descriptor *stm32_dma_prep_dma_memcpy( desc->sg_req[i].chan_reg.dma_sndtr = xfer_count; desc->sg_req[i].len = xfer_count; } - - desc->num_sgs = num_sgs; desc->cyclic = false; return vchan_tx_prep(&chan->vchan, &desc->vdesc, flags); @@ -1567,17 +1563,10 @@ static int stm32_dma_probe(struct platform_device *pdev) struct stm32_dma_chan *chan; struct stm32_dma_device *dmadev; struct dma_device *dd; - const struct of_device_id *match; struct resource *res; struct reset_control *rst; int i, ret; - match = of_match_device(stm32_dma_of_match, &pdev->dev); - if (!match) { - dev_err(&pdev->dev, "Error: No device match found\n"); - return -ENODEV; - } - dmadev = devm_kzalloc(&pdev->dev, sizeof(*dmadev), GFP_KERNEL); if (!dmadev) return -ENOMEM; diff --git a/drivers/dma/stm32-mdma.c b/drivers/dma/stm32-mdma.c index bae08b3f55c7..6505081ced44 100644 --- a/drivers/dma/stm32-mdma.c +++ b/drivers/dma/stm32-mdma.c @@ -224,7 +224,7 @@ struct stm32_mdma_desc { u32 ccr; bool cyclic; u32 count; - struct stm32_mdma_desc_node node[]; + struct stm32_mdma_desc_node node[] __counted_by(count); }; struct stm32_mdma_dma_config { @@ -256,7 +256,7 @@ struct stm32_mdma_device { u32 nr_ahb_addr_masks; u32 chan_reserved; struct stm32_mdma_chan chan[STM32_MDMA_MAX_CHANNELS]; - u32 ahb_addr_masks[]; + u32 ahb_addr_masks[] __counted_by(nr_ahb_addr_masks); }; static struct stm32_mdma_device *stm32_mdma_get_dev( @@ -321,6 +321,7 @@ static struct stm32_mdma_desc *stm32_mdma_alloc_desc( desc = kzalloc(struct_size(desc, node, count), GFP_NOWAIT); if (!desc) return NULL; + desc->count = count; for (i = 0; i < count; i++) { desc->node[i].hwdesc = @@ -330,8 +331,6 @@ static struct stm32_mdma_desc *stm32_mdma_alloc_desc( goto err; } - desc->count = count; - return desc; err: @@ -489,7 +488,7 @@ static int stm32_mdma_set_xfer_param(struct stm32_mdma_chan *chan, src_maxburst = chan->dma_config.src_maxburst; dst_maxburst = chan->dma_config.dst_maxburst; - ccr = stm32_mdma_read(dmadev, STM32_MDMA_CCR(chan->id)); + ccr = stm32_mdma_read(dmadev, STM32_MDMA_CCR(chan->id)) & ~STM32_MDMA_CCR_EN; ctcr = stm32_mdma_read(dmadev, STM32_MDMA_CTCR(chan->id)); ctbr = stm32_mdma_read(dmadev, STM32_MDMA_CTBR(chan->id)); @@ -965,7 +964,7 @@ stm32_mdma_prep_dma_memcpy(struct dma_chan *c, dma_addr_t dest, dma_addr_t src, if (!desc) return NULL; - ccr = stm32_mdma_read(dmadev, STM32_MDMA_CCR(chan->id)); + ccr = stm32_mdma_read(dmadev, STM32_MDMA_CCR(chan->id)) & ~STM32_MDMA_CCR_EN; ctcr = stm32_mdma_read(dmadev, STM32_MDMA_CTCR(chan->id)); ctbr = stm32_mdma_read(dmadev, STM32_MDMA_CTBR(chan->id)); cbndtr = stm32_mdma_read(dmadev, STM32_MDMA_CBNDTR(chan->id)); @@ -1627,13 +1626,13 @@ static int stm32_mdma_probe(struct platform_device *pdev) GFP_KERNEL); if (!dmadev) return -ENOMEM; + dmadev->nr_ahb_addr_masks = count; dmadev->nr_channels = nr_channels; dmadev->nr_requests = nr_requests; device_property_read_u32_array(&pdev->dev, "st,ahb-addr-masks", dmadev->ahb_addr_masks, count); - dmadev->nr_ahb_addr_masks = count; dmadev->base = devm_platform_ioremap_resource(pdev, 0); if (IS_ERR(dmadev->base)) diff --git a/drivers/dma/sun4i-dma.c b/drivers/dma/sun4i-dma.c index e86c8829513a..2e7f9b07fdd2 100644 --- a/drivers/dma/sun4i-dma.c +++ b/drivers/dma/sun4i-dma.c @@ -1271,7 +1271,7 @@ err_clk_disable: return ret; } -static int sun4i_dma_remove(struct platform_device *pdev) +static void sun4i_dma_remove(struct platform_device *pdev) { struct sun4i_dma_dev *priv = platform_get_drvdata(pdev); @@ -1282,8 +1282,6 @@ static int sun4i_dma_remove(struct platform_device *pdev) dma_async_device_unregister(&priv->slave); clk_disable_unprepare(priv->clk); - - return 0; } static const struct of_device_id sun4i_dma_match[] = { @@ -1294,7 +1292,7 @@ MODULE_DEVICE_TABLE(of, sun4i_dma_match); static struct platform_driver sun4i_dma_driver = { .probe = sun4i_dma_probe, - .remove = sun4i_dma_remove, + .remove_new = sun4i_dma_remove, .driver = { .name = "sun4i-dma", .of_match_table = sun4i_dma_match, diff --git a/drivers/dma/sun6i-dma.c b/drivers/dma/sun6i-dma.c index 2469efddf540..583bf49031cf 100644 --- a/drivers/dma/sun6i-dma.c +++ b/drivers/dma/sun6i-dma.c @@ -1470,7 +1470,7 @@ err_chan_free: return ret; } -static int sun6i_dma_remove(struct platform_device *pdev) +static void sun6i_dma_remove(struct platform_device *pdev) { struct sun6i_dma_dev *sdc = platform_get_drvdata(pdev); @@ -1484,13 +1484,11 @@ static int sun6i_dma_remove(struct platform_device *pdev) reset_control_assert(sdc->rstc); sun6i_dma_free(sdc); - - return 0; } static struct platform_driver sun6i_dma_driver = { .probe = sun6i_dma_probe, - .remove = sun6i_dma_remove, + .remove_new = sun6i_dma_remove, .driver = { .name = "sun6i-dma", .of_match_table = sun6i_dma_match, diff --git a/drivers/dma/tegra186-gpc-dma.c b/drivers/dma/tegra186-gpc-dma.c index 33b101001100..fa4d4142a68a 100644 --- a/drivers/dma/tegra186-gpc-dma.c +++ b/drivers/dma/tegra186-gpc-dma.c @@ -221,7 +221,7 @@ struct tegra_dma_desc { unsigned int sg_count; struct virt_dma_desc vd; struct tegra_dma_channel *tdc; - struct tegra_dma_sg_req sg_req[]; + struct tegra_dma_sg_req sg_req[] __counted_by(sg_count); }; /* @@ -1473,14 +1473,12 @@ static int tegra_dma_probe(struct platform_device *pdev) return 0; } -static int tegra_dma_remove(struct platform_device *pdev) +static void tegra_dma_remove(struct platform_device *pdev) { struct tegra_dma *tdma = platform_get_drvdata(pdev); of_dma_controller_free(pdev->dev.of_node); dma_async_device_unregister(&tdma->dma_dev); - - return 0; } static int __maybe_unused tegra_dma_pm_suspend(struct device *dev) @@ -1533,7 +1531,7 @@ static struct platform_driver tegra_dma_driver = { .of_match_table = tegra_dma_of_match, }, .probe = tegra_dma_probe, - .remove = tegra_dma_remove, + .remove_new = tegra_dma_remove, }; module_platform_driver(tegra_dma_driver); diff --git a/drivers/dma/tegra20-apb-dma.c b/drivers/dma/tegra20-apb-dma.c index 063022f9df76..ac69778827f2 100644 --- a/drivers/dma/tegra20-apb-dma.c +++ b/drivers/dma/tegra20-apb-dma.c @@ -1581,7 +1581,7 @@ err_clk_unprepare: return ret; } -static int tegra_dma_remove(struct platform_device *pdev) +static void tegra_dma_remove(struct platform_device *pdev) { struct tegra_dma *tdma = platform_get_drvdata(pdev); @@ -1589,8 +1589,6 @@ static int tegra_dma_remove(struct platform_device *pdev) dma_async_device_unregister(&tdma->dma_dev); pm_runtime_disable(&pdev->dev); clk_unprepare(tdma->dma_clk); - - return 0; } static int __maybe_unused tegra_dma_runtime_suspend(struct device *dev) @@ -1677,7 +1675,7 @@ static struct platform_driver tegra_dmac_driver = { .of_match_table = tegra_dma_of_match, }, .probe = tegra_dma_probe, - .remove = tegra_dma_remove, + .remove_new = tegra_dma_remove, }; module_platform_driver(tegra_dmac_driver); diff --git a/drivers/dma/tegra210-adma.c b/drivers/dma/tegra210-adma.c index e557bada1510..7a0586633bf3 100644 --- a/drivers/dma/tegra210-adma.c +++ b/drivers/dma/tegra210-adma.c @@ -162,7 +162,7 @@ struct tegra_adma { const struct tegra_adma_chip_data *cdata; /* Last member of the structure */ - struct tegra_adma_chan channels[]; + struct tegra_adma_chan channels[] __counted_by(nr_channels); }; static inline void tdma_write(struct tegra_adma *tdma, u32 reg, u32 val) @@ -949,7 +949,7 @@ irq_dispose: return ret; } -static int tegra_adma_remove(struct platform_device *pdev) +static void tegra_adma_remove(struct platform_device *pdev) { struct tegra_adma *tdma = platform_get_drvdata(pdev); int i; @@ -961,8 +961,6 @@ static int tegra_adma_remove(struct platform_device *pdev) irq_dispose_mapping(tdma->channels[i].irq); pm_runtime_disable(&pdev->dev); - - return 0; } static const struct dev_pm_ops tegra_adma_dev_pm_ops = { @@ -979,7 +977,7 @@ static struct platform_driver tegra_admac_driver = { .of_match_table = tegra_adma_of_match, }, .probe = tegra_adma_probe, - .remove = tegra_adma_remove, + .remove_new = tegra_adma_remove, }; module_platform_driver(tegra_admac_driver); diff --git a/drivers/dma/ti/cppi41.c b/drivers/dma/ti/cppi41.c index c3555cfb0681..7e0b06b5dff0 100644 --- a/drivers/dma/ti/cppi41.c +++ b/drivers/dma/ti/cppi41.c @@ -1156,7 +1156,7 @@ err_get_sync: return ret; } -static int cppi41_dma_remove(struct platform_device *pdev) +static void cppi41_dma_remove(struct platform_device *pdev) { struct cppi41_dd *cdd = platform_get_drvdata(pdev); int error; @@ -1173,7 +1173,6 @@ static int cppi41_dma_remove(struct platform_device *pdev) pm_runtime_dont_use_autosuspend(&pdev->dev); pm_runtime_put_sync(&pdev->dev); pm_runtime_disable(&pdev->dev); - return 0; } static int __maybe_unused cppi41_suspend(struct device *dev) @@ -1244,7 +1243,7 @@ static const struct dev_pm_ops cppi41_pm_ops = { static struct platform_driver cpp41_dma_driver = { .probe = cppi41_dma_probe, - .remove = cppi41_dma_remove, + .remove_new = cppi41_dma_remove, .driver = { .name = "cppi41-dma-engine", .pm = &cppi41_pm_ops, diff --git a/drivers/dma/ti/edma.c b/drivers/dma/ti/edma.c index aa8e2e8ac260..f1f920861fa9 100644 --- a/drivers/dma/ti/edma.c +++ b/drivers/dma/ti/edma.c @@ -202,7 +202,7 @@ struct edma_desc { u32 residue; u32 residue_stat; - struct edma_pset pset[]; + struct edma_pset pset[] __counted_by(pset_nr); }; struct edma_cc; @@ -2401,7 +2401,7 @@ static int edma_probe(struct platform_device *pdev) if (irq < 0 && node) irq = irq_of_parse_and_map(node, 0); - if (irq >= 0) { + if (irq > 0) { irq_name = devm_kasprintf(dev, GFP_KERNEL, "%s_ccint", dev_name(dev)); ret = devm_request_irq(dev, irq, dma_irq_handler, 0, irq_name, @@ -2417,7 +2417,7 @@ static int edma_probe(struct platform_device *pdev) if (irq < 0 && node) irq = irq_of_parse_and_map(node, 2); - if (irq >= 0) { + if (irq > 0) { irq_name = devm_kasprintf(dev, GFP_KERNEL, "%s_ccerrint", dev_name(dev)); ret = devm_request_irq(dev, irq, dma_ccerr_handler, 0, irq_name, @@ -2550,7 +2550,7 @@ static void edma_cleanupp_vchan(struct dma_device *dmadev) } } -static int edma_remove(struct platform_device *pdev) +static void edma_remove(struct platform_device *pdev) { struct device *dev = &pdev->dev; struct edma_cc *ecc = dev_get_drvdata(dev); @@ -2568,8 +2568,6 @@ static int edma_remove(struct platform_device *pdev) edma_free_slot(ecc, ecc->dummy_slot); pm_runtime_put_sync(dev); pm_runtime_disable(dev); - - return 0; } #ifdef CONFIG_PM_SLEEP @@ -2628,7 +2626,7 @@ static const struct dev_pm_ops edma_pm_ops = { static struct platform_driver edma_driver = { .probe = edma_probe, - .remove = edma_remove, + .remove_new = edma_remove, .driver = { .name = "edma", .pm = &edma_pm_ops, diff --git a/drivers/dma/ti/omap-dma.c b/drivers/dma/ti/omap-dma.c index cf96cf915c0c..b9e0e22383b7 100644 --- a/drivers/dma/ti/omap-dma.c +++ b/drivers/dma/ti/omap-dma.c @@ -124,7 +124,7 @@ struct omap_desc { uint32_t csdp; /* CSDP value */ unsigned sglen; - struct omap_sg sg[]; + struct omap_sg sg[] __counted_by(sglen); }; enum { @@ -1005,6 +1005,7 @@ static struct dma_async_tx_descriptor *omap_dma_prep_slave_sg( d = kzalloc(struct_size(d, sg, sglen), GFP_ATOMIC); if (!d) return NULL; + d->sglen = sglen; d->dir = dir; d->dev_addr = dev_addr; @@ -1120,8 +1121,6 @@ static struct dma_async_tx_descriptor *omap_dma_prep_slave_sg( } } - d->sglen = sglen; - /* Release the dma_pool entries if one allocation failed */ if (ll_failed) { for (i = 0; i < d->sglen; i++) { @@ -1844,7 +1843,7 @@ static int omap_dma_probe(struct platform_device *pdev) return rc; } -static int omap_dma_remove(struct platform_device *pdev) +static void omap_dma_remove(struct platform_device *pdev) { struct omap_dmadev *od = platform_get_drvdata(pdev); int irq; @@ -1869,8 +1868,6 @@ static int omap_dma_remove(struct platform_device *pdev) dma_pool_destroy(od->desc_pool); omap_dma_free(od); - - return 0; } static const struct omap_dma_config omap2420_data = { @@ -1918,7 +1915,7 @@ MODULE_DEVICE_TABLE(of, omap_dma_match); static struct platform_driver omap_dma_driver = { .probe = omap_dma_probe, - .remove = omap_dma_remove, + .remove_new = omap_dma_remove, .driver = { .name = "omap-dma-engine", .of_match_table = omap_dma_match, diff --git a/drivers/dma/timb_dma.c b/drivers/dma/timb_dma.c index 3f524be69efb..7410025605e0 100644 --- a/drivers/dma/timb_dma.c +++ b/drivers/dma/timb_dma.c @@ -740,7 +740,7 @@ err_release_region: } -static int td_remove(struct platform_device *pdev) +static void td_remove(struct platform_device *pdev) { struct timb_dma *td = platform_get_drvdata(pdev); struct resource *iomem = platform_get_resource(pdev, IORESOURCE_MEM, 0); @@ -754,7 +754,6 @@ static int td_remove(struct platform_device *pdev) release_mem_region(iomem->start, resource_size(iomem)); dev_dbg(&pdev->dev, "Removed...\n"); - return 0; } static struct platform_driver td_driver = { @@ -762,7 +761,7 @@ static struct platform_driver td_driver = { .name = DRIVER_NAME, }, .probe = td_probe, - .remove = td_remove, + .remove_new = td_remove, }; module_platform_driver(td_driver); diff --git a/drivers/dma/txx9dmac.c b/drivers/dma/txx9dmac.c index 5b6b375a257e..44ba377b4b5a 100644 --- a/drivers/dma/txx9dmac.c +++ b/drivers/dma/txx9dmac.c @@ -1151,7 +1151,7 @@ static int __init txx9dmac_chan_probe(struct platform_device *pdev) return 0; } -static int txx9dmac_chan_remove(struct platform_device *pdev) +static void txx9dmac_chan_remove(struct platform_device *pdev) { struct txx9dmac_chan *dc = platform_get_drvdata(pdev); @@ -1162,7 +1162,6 @@ static int txx9dmac_chan_remove(struct platform_device *pdev) tasklet_kill(&dc->tasklet); } dc->ddev->chan[pdev->id % TXX9_DMA_MAX_NR_CHANNELS] = NULL; - return 0; } static int __init txx9dmac_probe(struct platform_device *pdev) @@ -1215,7 +1214,7 @@ static int __init txx9dmac_probe(struct platform_device *pdev) return 0; } -static int txx9dmac_remove(struct platform_device *pdev) +static void txx9dmac_remove(struct platform_device *pdev) { struct txx9dmac_dev *ddev = platform_get_drvdata(pdev); @@ -1224,7 +1223,6 @@ static int txx9dmac_remove(struct platform_device *pdev) devm_free_irq(&pdev->dev, ddev->irq, ddev); tasklet_kill(&ddev->tasklet); } - return 0; } static void txx9dmac_shutdown(struct platform_device *pdev) @@ -1262,14 +1260,14 @@ static const struct dev_pm_ops txx9dmac_dev_pm_ops = { }; static struct platform_driver txx9dmac_chan_driver = { - .remove = txx9dmac_chan_remove, + .remove_new = txx9dmac_chan_remove, .driver = { .name = "txx9dmac-chan", }, }; static struct platform_driver txx9dmac_driver = { - .remove = txx9dmac_remove, + .remove_new = txx9dmac_remove, .shutdown = txx9dmac_shutdown, .driver = { .name = "txx9dmac", diff --git a/drivers/dma/uniphier-xdmac.c b/drivers/dma/uniphier-xdmac.c index 290836b7e1be..3a8ee2b173b5 100644 --- a/drivers/dma/uniphier-xdmac.c +++ b/drivers/dma/uniphier-xdmac.c @@ -80,7 +80,7 @@ struct uniphier_xdmac_desc { unsigned int nr_node; unsigned int cur_node; enum dma_transfer_direction dir; - struct uniphier_xdmac_desc_node nodes[]; + struct uniphier_xdmac_desc_node nodes[] __counted_by(nr_node); }; struct uniphier_xdmac_chan { @@ -97,7 +97,7 @@ struct uniphier_xdmac_device { struct dma_device ddev; void __iomem *reg_base; int nr_chans; - struct uniphier_xdmac_chan channels[]; + struct uniphier_xdmac_chan channels[] __counted_by(nr_chans); }; static struct uniphier_xdmac_chan * @@ -295,6 +295,7 @@ uniphier_xdmac_prep_dma_memcpy(struct dma_chan *chan, dma_addr_t dst, xd = kzalloc(struct_size(xd, nodes, nr), GFP_NOWAIT); if (!xd) return NULL; + xd->nr_node = nr; for (i = 0; i < nr; i++) { burst_size = min_t(size_t, len, XDMAC_MAX_WORD_SIZE); @@ -309,7 +310,6 @@ uniphier_xdmac_prep_dma_memcpy(struct dma_chan *chan, dma_addr_t dst, } xd->dir = DMA_MEM_TO_MEM; - xd->nr_node = nr; xd->cur_node = 0; return vchan_tx_prep(vc, &xd->vd, flags); @@ -351,6 +351,7 @@ uniphier_xdmac_prep_slave_sg(struct dma_chan *chan, struct scatterlist *sgl, xd = kzalloc(struct_size(xd, nodes, sg_len), GFP_NOWAIT); if (!xd) return NULL; + xd->nr_node = sg_len; for_each_sg(sgl, sg, sg_len, i) { xd->nodes[i].src = (direction == DMA_DEV_TO_MEM) @@ -385,7 +386,6 @@ uniphier_xdmac_prep_slave_sg(struct dma_chan *chan, struct scatterlist *sgl, } xd->dir = direction; - xd->nr_node = sg_len; xd->cur_node = 0; return vchan_tx_prep(vc, &xd->vd, flags); diff --git a/drivers/dma/xgene-dma.c b/drivers/dma/xgene-dma.c index bb4ff8c86733..fd4397adeb79 100644 --- a/drivers/dma/xgene-dma.c +++ b/drivers/dma/xgene-dma.c @@ -1776,7 +1776,7 @@ err_clk_enable: return ret; } -static int xgene_dma_remove(struct platform_device *pdev) +static void xgene_dma_remove(struct platform_device *pdev) { struct xgene_dma *pdma = platform_get_drvdata(pdev); struct xgene_dma_chan *chan; @@ -1797,8 +1797,6 @@ static int xgene_dma_remove(struct platform_device *pdev) if (!IS_ERR(pdma->clk)) clk_disable_unprepare(pdma->clk); - - return 0; } #ifdef CONFIG_ACPI @@ -1817,7 +1815,7 @@ MODULE_DEVICE_TABLE(of, xgene_dma_of_match_ptr); static struct platform_driver xgene_dma_driver = { .probe = xgene_dma_probe, - .remove = xgene_dma_remove, + .remove_new = xgene_dma_remove, .driver = { .name = "X-Gene-DMA", .of_match_table = xgene_dma_of_match_ptr, diff --git a/drivers/dma/xilinx/xdma-regs.h b/drivers/dma/xilinx/xdma-regs.h index dd98b4526b90..e641a5083e14 100644 --- a/drivers/dma/xilinx/xdma-regs.h +++ b/drivers/dma/xilinx/xdma-regs.h @@ -44,6 +44,8 @@ FIELD_PREP(XDMA_DESC_FLAGS_BITS, (flag))) #define XDMA_DESC_CONTROL_LAST \ XDMA_DESC_CONTROL(1, XDMA_DESC_STOPPED | XDMA_DESC_COMPLETED) +#define XDMA_DESC_CONTROL_CYCLIC \ + XDMA_DESC_CONTROL(1, XDMA_DESC_COMPLETED) /* * Descriptor for a single contiguous memory block transfer. diff --git a/drivers/dma/xilinx/xdma.c b/drivers/dma/xilinx/xdma.c index e0bfd129d563..84a88029226f 100644 --- a/drivers/dma/xilinx/xdma.c +++ b/drivers/dma/xilinx/xdma.c @@ -83,6 +83,9 @@ struct xdma_chan { * @dblk_num: Number of hardware descriptor blocks * @desc_num: Number of hardware descriptors * @completed_desc_num: Completed hardware descriptors + * @cyclic: Cyclic transfer vs. scatter-gather + * @periods: Number of periods in the cyclic transfer + * @period_size: Size of a period in bytes in cyclic transfers */ struct xdma_desc { struct virt_dma_desc vdesc; @@ -93,6 +96,9 @@ struct xdma_desc { u32 dblk_num; u32 desc_num; u32 completed_desc_num; + bool cyclic; + u32 periods; + u32 period_size; }; #define XDMA_DEV_STATUS_REG_DMA BIT(0) @@ -137,10 +143,10 @@ static inline void *xdma_blk_last_desc(struct xdma_desc_block *block) } /** - * xdma_link_desc_blocks - Link descriptor blocks for DMA transfer + * xdma_link_sg_desc_blocks - Link SG descriptor blocks for DMA transfer * @sw_desc: Tx descriptor pointer */ -static void xdma_link_desc_blocks(struct xdma_desc *sw_desc) +static void xdma_link_sg_desc_blocks(struct xdma_desc *sw_desc) { struct xdma_desc_block *block; u32 last_blk_desc, desc_control; @@ -174,6 +180,25 @@ static void xdma_link_desc_blocks(struct xdma_desc *sw_desc) desc->control = cpu_to_le32(XDMA_DESC_CONTROL_LAST); } +/** + * xdma_link_cyclic_desc_blocks - Link cyclic descriptor blocks for DMA transfer + * @sw_desc: Tx descriptor pointer + */ +static void xdma_link_cyclic_desc_blocks(struct xdma_desc *sw_desc) +{ + struct xdma_desc_block *block; + struct xdma_hw_desc *desc; + int i; + + block = sw_desc->desc_blocks; + for (i = 0; i < sw_desc->desc_num - 1; i++) { + desc = block->virt_addr + i * XDMA_DESC_SIZE; + desc->next_desc = cpu_to_le64(block->dma_addr + ((i + 1) * XDMA_DESC_SIZE)); + } + desc = block->virt_addr + i * XDMA_DESC_SIZE; + desc->next_desc = cpu_to_le64(block->dma_addr); +} + static inline struct xdma_chan *to_xdma_chan(struct dma_chan *chan) { return container_of(chan, struct xdma_chan, vchan.chan); @@ -231,14 +256,16 @@ static void xdma_free_desc(struct virt_dma_desc *vdesc) * xdma_alloc_desc - Allocate descriptor * @chan: DMA channel pointer * @desc_num: Number of hardware descriptors + * @cyclic: Whether this is a cyclic transfer */ static struct xdma_desc * -xdma_alloc_desc(struct xdma_chan *chan, u32 desc_num) +xdma_alloc_desc(struct xdma_chan *chan, u32 desc_num, bool cyclic) { struct xdma_desc *sw_desc; struct xdma_hw_desc *desc; dma_addr_t dma_addr; u32 dblk_num; + u32 control; void *addr; int i, j; @@ -248,12 +275,18 @@ xdma_alloc_desc(struct xdma_chan *chan, u32 desc_num) sw_desc->chan = chan; sw_desc->desc_num = desc_num; + sw_desc->cyclic = cyclic; dblk_num = DIV_ROUND_UP(desc_num, XDMA_DESC_ADJACENT); sw_desc->desc_blocks = kcalloc(dblk_num, sizeof(*sw_desc->desc_blocks), GFP_NOWAIT); if (!sw_desc->desc_blocks) goto failed; + if (cyclic) + control = XDMA_DESC_CONTROL_CYCLIC; + else + control = XDMA_DESC_CONTROL(1, 0); + sw_desc->dblk_num = dblk_num; for (i = 0; i < sw_desc->dblk_num; i++) { addr = dma_pool_alloc(chan->desc_pool, GFP_NOWAIT, &dma_addr); @@ -263,10 +296,13 @@ xdma_alloc_desc(struct xdma_chan *chan, u32 desc_num) sw_desc->desc_blocks[i].virt_addr = addr; sw_desc->desc_blocks[i].dma_addr = dma_addr; for (j = 0, desc = addr; j < XDMA_DESC_ADJACENT; j++) - desc[j].control = cpu_to_le32(XDMA_DESC_CONTROL(1, 0)); + desc[j].control = cpu_to_le32(control); } - xdma_link_desc_blocks(sw_desc); + if (cyclic) + xdma_link_cyclic_desc_blocks(sw_desc); + else + xdma_link_sg_desc_blocks(sw_desc); return sw_desc; @@ -466,7 +502,7 @@ xdma_prep_device_sg(struct dma_chan *chan, struct scatterlist *sgl, for_each_sg(sgl, sg, sg_len, i) desc_num += DIV_ROUND_UP(sg_dma_len(sg), XDMA_DESC_BLEN_MAX); - sw_desc = xdma_alloc_desc(xdma_chan, desc_num); + sw_desc = xdma_alloc_desc(xdma_chan, desc_num, false); if (!sw_desc) return NULL; sw_desc->dir = dir; @@ -522,6 +558,81 @@ failed: } /** + * xdma_prep_dma_cyclic - prepare for cyclic DMA transactions + * @chan: DMA channel pointer + * @address: Device DMA address to access + * @size: Total length to transfer + * @period_size: Period size to use for each transfer + * @dir: Transfer direction + * @flags: Transfer ack flags + */ +static struct dma_async_tx_descriptor * +xdma_prep_dma_cyclic(struct dma_chan *chan, dma_addr_t address, + size_t size, size_t period_size, + enum dma_transfer_direction dir, + unsigned long flags) +{ + struct xdma_chan *xdma_chan = to_xdma_chan(chan); + struct xdma_device *xdev = xdma_chan->xdev_hdl; + unsigned int periods = size / period_size; + struct dma_async_tx_descriptor *tx_desc; + struct xdma_desc_block *dblk; + struct xdma_hw_desc *desc; + struct xdma_desc *sw_desc; + unsigned int i; + + /* + * Simplify the whole logic by preventing an abnormally high number of + * periods and periods size. + */ + if (period_size > XDMA_DESC_BLEN_MAX) { + xdma_err(xdev, "period size limited to %lu bytes\n", XDMA_DESC_BLEN_MAX); + return NULL; + } + + if (periods > XDMA_DESC_ADJACENT) { + xdma_err(xdev, "number of periods limited to %u\n", XDMA_DESC_ADJACENT); + return NULL; + } + + sw_desc = xdma_alloc_desc(xdma_chan, periods, true); + if (!sw_desc) + return NULL; + + sw_desc->periods = periods; + sw_desc->period_size = period_size; + sw_desc->dir = dir; + + dblk = sw_desc->desc_blocks; + desc = dblk->virt_addr; + + /* fill hardware descriptor */ + for (i = 0; i < periods; i++) { + desc->bytes = cpu_to_le32(period_size); + if (dir == DMA_MEM_TO_DEV) { + desc->src_addr = cpu_to_le64(address + i * period_size); + desc->dst_addr = cpu_to_le64(xdma_chan->cfg.dst_addr); + } else { + desc->src_addr = cpu_to_le64(xdma_chan->cfg.src_addr); + desc->dst_addr = cpu_to_le64(address + i * period_size); + } + + desc++; + } + + tx_desc = vchan_tx_prep(&xdma_chan->vchan, &sw_desc->vdesc, flags); + if (!tx_desc) + goto failed; + + return tx_desc; + +failed: + xdma_free_desc(&sw_desc->vdesc); + + return NULL; +} + +/** * xdma_device_config - Configure the DMA channel * @chan: DMA channel * @cfg: channel configuration @@ -577,6 +688,41 @@ static int xdma_alloc_chan_resources(struct dma_chan *chan) return 0; } +static enum dma_status xdma_tx_status(struct dma_chan *chan, dma_cookie_t cookie, + struct dma_tx_state *state) +{ + struct xdma_chan *xdma_chan = to_xdma_chan(chan); + struct xdma_desc *desc = NULL; + struct virt_dma_desc *vd; + enum dma_status ret; + unsigned long flags; + unsigned int period_idx; + u32 residue = 0; + + ret = dma_cookie_status(chan, cookie, state); + if (ret == DMA_COMPLETE) + return ret; + + spin_lock_irqsave(&xdma_chan->vchan.lock, flags); + + vd = vchan_find_desc(&xdma_chan->vchan, cookie); + if (vd) + desc = to_xdma_desc(vd); + if (!desc || !desc->cyclic) { + spin_unlock_irqrestore(&xdma_chan->vchan.lock, flags); + return ret; + } + + period_idx = desc->completed_desc_num % desc->periods; + residue = (desc->periods - period_idx) * desc->period_size; + + spin_unlock_irqrestore(&xdma_chan->vchan.lock, flags); + + dma_set_residue(state, residue); + + return ret; +} + /** * xdma_channel_isr - XDMA channel interrupt handler * @irq: IRQ number @@ -590,6 +736,7 @@ static irqreturn_t xdma_channel_isr(int irq, void *dev_id) struct virt_dma_desc *vd; struct xdma_desc *desc; int ret; + u32 st; spin_lock(&xchan->vchan.lock); @@ -608,6 +755,19 @@ static irqreturn_t xdma_channel_isr(int irq, void *dev_id) goto out; desc->completed_desc_num += complete_desc_num; + + if (desc->cyclic) { + ret = regmap_read(xdev->rmap, xchan->base + XDMA_CHAN_STATUS, + &st); + if (ret) + goto out; + + regmap_write(xdev->rmap, xchan->base + XDMA_CHAN_STATUS, st); + + vchan_cyclic_callback(vd); + goto out; + } + /* * if all data blocks are transferred, remove and complete the request */ @@ -621,7 +781,7 @@ static irqreturn_t xdma_channel_isr(int irq, void *dev_id) complete_desc_num != XDMA_DESC_BLOCK_NUM * XDMA_DESC_ADJACENT) goto out; - /* transfer the rest of data */ + /* transfer the rest of data (SG only) */ xdma_xfer_start(xchan); out: @@ -841,7 +1001,7 @@ EXPORT_SYMBOL(xdma_get_user_irq); * xdma_remove - Driver remove function * @pdev: Pointer to the platform_device structure */ -static int xdma_remove(struct platform_device *pdev) +static void xdma_remove(struct platform_device *pdev) { struct xdma_device *xdev = platform_get_drvdata(pdev); @@ -850,8 +1010,6 @@ static int xdma_remove(struct platform_device *pdev) if (xdev->status & XDMA_DEV_STATUS_REG_DMA) dma_async_device_unregister(&xdev->dma_dev); - - return 0; } /** @@ -885,7 +1043,7 @@ static int xdma_probe(struct platform_device *pdev) goto failed; } xdev->irq_start = res->start; - xdev->irq_num = res->end - res->start + 1; + xdev->irq_num = resource_size(res); res = platform_get_resource(pdev, IORESOURCE_MEM, 0); if (!res) { @@ -921,17 +1079,20 @@ static int xdma_probe(struct platform_device *pdev) dma_cap_set(DMA_SLAVE, xdev->dma_dev.cap_mask); dma_cap_set(DMA_PRIVATE, xdev->dma_dev.cap_mask); + dma_cap_set(DMA_CYCLIC, xdev->dma_dev.cap_mask); xdev->dma_dev.dev = &pdev->dev; + xdev->dma_dev.residue_granularity = DMA_RESIDUE_GRANULARITY_SEGMENT; xdev->dma_dev.device_free_chan_resources = xdma_free_chan_resources; xdev->dma_dev.device_alloc_chan_resources = xdma_alloc_chan_resources; - xdev->dma_dev.device_tx_status = dma_cookie_status; + xdev->dma_dev.device_tx_status = xdma_tx_status; xdev->dma_dev.device_prep_slave_sg = xdma_prep_device_sg; xdev->dma_dev.device_config = xdma_device_config; xdev->dma_dev.device_issue_pending = xdma_issue_pending; xdev->dma_dev.filter.map = pdata->device_map; xdev->dma_dev.filter.mapcnt = pdata->device_map_cnt; xdev->dma_dev.filter.fn = xdma_filter_fn; + xdev->dma_dev.device_prep_dma_cyclic = xdma_prep_dma_cyclic; ret = dma_async_device_register(&xdev->dma_dev); if (ret) { @@ -966,7 +1127,7 @@ static struct platform_driver xdma_driver = { }, .id_table = xdma_id_table, .probe = xdma_probe, - .remove = xdma_remove, + .remove_new = xdma_remove, }; module_platform_driver(xdma_driver); diff --git a/drivers/dma/xilinx/xilinx_dma.c b/drivers/dma/xilinx/xilinx_dma.c index 0a3b2e22f23d..e40696f6f864 100644 --- a/drivers/dma/xilinx/xilinx_dma.c +++ b/drivers/dma/xilinx/xilinx_dma.c @@ -3242,10 +3242,8 @@ disable_clks: /** * xilinx_dma_remove - Driver remove function * @pdev: Pointer to the platform_device structure - * - * Return: Always '0' */ -static int xilinx_dma_remove(struct platform_device *pdev) +static void xilinx_dma_remove(struct platform_device *pdev) { struct xilinx_dma_device *xdev = platform_get_drvdata(pdev); int i; @@ -3259,8 +3257,6 @@ static int xilinx_dma_remove(struct platform_device *pdev) xilinx_dma_chan_remove(xdev->chan[i]); xdma_disable_allclks(xdev); - - return 0; } static struct platform_driver xilinx_vdma_driver = { @@ -3269,7 +3265,7 @@ static struct platform_driver xilinx_vdma_driver = { .of_match_table = xilinx_dma_of_ids, }, .probe = xilinx_dma_probe, - .remove = xilinx_dma_remove, + .remove_new = xilinx_dma_remove, }; module_platform_driver(xilinx_vdma_driver); diff --git a/drivers/dma/xilinx/xilinx_dpdma.c b/drivers/dma/xilinx/xilinx_dpdma.c index 84dc5240a807..69587d85a7cd 100644 --- a/drivers/dma/xilinx/xilinx_dpdma.c +++ b/drivers/dma/xilinx/xilinx_dpdma.c @@ -1736,7 +1736,7 @@ error: return ret; } -static int xilinx_dpdma_remove(struct platform_device *pdev) +static void xilinx_dpdma_remove(struct platform_device *pdev) { struct xilinx_dpdma_device *xdev = platform_get_drvdata(pdev); unsigned int i; @@ -1751,8 +1751,6 @@ static int xilinx_dpdma_remove(struct platform_device *pdev) for (i = 0; i < ARRAY_SIZE(xdev->chan); i++) xilinx_dpdma_chan_remove(xdev->chan[i]); - - return 0; } static const struct of_device_id xilinx_dpdma_of_match[] = { @@ -1763,7 +1761,7 @@ MODULE_DEVICE_TABLE(of, xilinx_dpdma_of_match); static struct platform_driver xilinx_dpdma_driver = { .probe = xilinx_dpdma_probe, - .remove = xilinx_dpdma_remove, + .remove_new = xilinx_dpdma_remove, .driver = { .name = "xilinx-zynqmp-dpdma", .of_match_table = xilinx_dpdma_of_match, diff --git a/drivers/dma/xilinx/zynqmp_dma.c b/drivers/dma/xilinx/zynqmp_dma.c index bd8c3cc2eaab..f31631bef961 100644 --- a/drivers/dma/xilinx/zynqmp_dma.c +++ b/drivers/dma/xilinx/zynqmp_dma.c @@ -1147,7 +1147,7 @@ err_disable_pm: * * Return: Always '0' */ -static int zynqmp_dma_remove(struct platform_device *pdev) +static void zynqmp_dma_remove(struct platform_device *pdev) { struct zynqmp_dma_device *zdev = platform_get_drvdata(pdev); @@ -1158,8 +1158,6 @@ static int zynqmp_dma_remove(struct platform_device *pdev) pm_runtime_disable(zdev->dev); if (!pm_runtime_enabled(zdev->dev)) zynqmp_dma_runtime_suspend(zdev->dev); - - return 0; } static const struct of_device_id zynqmp_dma_of_match[] = { @@ -1175,7 +1173,7 @@ static struct platform_driver zynqmp_dma_driver = { .pm = &zynqmp_dma_dev_pm_ops, }, .probe = zynqmp_dma_probe, - .remove = zynqmp_dma_remove, + .remove_new = zynqmp_dma_remove, }; module_platform_driver(zynqmp_dma_driver); |