| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Angelo Dureghello | 962 | 97.66% | 3 | 50.00% |
| Tudor Laurentiu | 13 | 1.32% | 1 | 16.67% |
| Vinod Koul | 9 | 0.91% | 1 | 16.67% |
| Krzysztof Kozlowski | 1 | 0.10% | 1 | 16.67% |
| Total | 985 | 6 |
/* SPDX-License-Identifier: GPL-2.0+ */ /* * Copyright 2013-2014 Freescale Semiconductor, Inc. * Copyright 2018 Angelo Dureghello <angelo@sysam.it> */ #ifndef _FSL_EDMA_COMMON_H_ #define _FSL_EDMA_COMMON_H_ #include <linux/dma-direction.h> #include "virt-dma.h" #define EDMA_CR_EDBG BIT(1) #define EDMA_CR_ERCA BIT(2) #define EDMA_CR_ERGA BIT(3) #define EDMA_CR_HOE BIT(4) #define EDMA_CR_HALT BIT(5) #define EDMA_CR_CLM BIT(6) #define EDMA_CR_EMLM BIT(7) #define EDMA_CR_ECX BIT(16) #define EDMA_CR_CX BIT(17) #define EDMA_SEEI_SEEI(x) ((x) & GENMASK(4, 0)) #define EDMA_CEEI_CEEI(x) ((x) & GENMASK(4, 0)) #define EDMA_CINT_CINT(x) ((x) & GENMASK(4, 0)) #define EDMA_CERR_CERR(x) ((x) & GENMASK(4, 0)) #define EDMA_TCD_ATTR_DSIZE(x) (((x) & GENMASK(2, 0))) #define EDMA_TCD_ATTR_DMOD(x) (((x) & GENMASK(4, 0)) << 3) #define EDMA_TCD_ATTR_SSIZE(x) (((x) & GENMASK(2, 0)) << 8) #define EDMA_TCD_ATTR_SMOD(x) (((x) & GENMASK(4, 0)) << 11) #define EDMA_TCD_ATTR_DSIZE_8BIT 0 #define EDMA_TCD_ATTR_DSIZE_16BIT BIT(0) #define EDMA_TCD_ATTR_DSIZE_32BIT BIT(1) #define EDMA_TCD_ATTR_DSIZE_64BIT (BIT(0) | BIT(1)) #define EDMA_TCD_ATTR_DSIZE_32BYTE (BIT(3) | BIT(0)) #define EDMA_TCD_ATTR_SSIZE_8BIT 0 #define EDMA_TCD_ATTR_SSIZE_16BIT (EDMA_TCD_ATTR_DSIZE_16BIT << 8) #define EDMA_TCD_ATTR_SSIZE_32BIT (EDMA_TCD_ATTR_DSIZE_32BIT << 8) #define EDMA_TCD_ATTR_SSIZE_64BIT (EDMA_TCD_ATTR_DSIZE_64BIT << 8) #define EDMA_TCD_ATTR_SSIZE_32BYTE (EDMA_TCD_ATTR_DSIZE_32BYTE << 8) #define EDMA_TCD_CITER_CITER(x) ((x) & GENMASK(14, 0)) #define EDMA_TCD_BITER_BITER(x) ((x) & GENMASK(14, 0)) #define EDMA_TCD_CSR_START BIT(0) #define EDMA_TCD_CSR_INT_MAJOR BIT(1) #define EDMA_TCD_CSR_INT_HALF BIT(2) #define EDMA_TCD_CSR_D_REQ BIT(3) #define EDMA_TCD_CSR_E_SG BIT(4) #define EDMA_TCD_CSR_E_LINK BIT(5) #define EDMA_TCD_CSR_ACTIVE BIT(6) #define EDMA_TCD_CSR_DONE BIT(7) #define EDMAMUX_CHCFG_DIS 0x0 #define EDMAMUX_CHCFG_ENBL 0x80 #define EDMAMUX_CHCFG_SOURCE(n) ((n) & 0x3F) #define DMAMUX_NR 2 #define FSL_EDMA_BUSWIDTHS (BIT(DMA_SLAVE_BUSWIDTH_1_BYTE) | \ BIT(DMA_SLAVE_BUSWIDTH_2_BYTES) | \ BIT(DMA_SLAVE_BUSWIDTH_4_BYTES) | \ BIT(DMA_SLAVE_BUSWIDTH_8_BYTES)) enum fsl_edma_pm_state { RUNNING = 0, SUSPENDED, }; struct fsl_edma_hw_tcd { __le32 saddr; __le16 soff; __le16 attr; __le32 nbytes; __le32 slast; __le32 daddr; __le16 doff; __le16 citer; __le32 dlast_sga; __le16 csr; __le16 biter; }; /* * These are iomem pointers, for both v32 and v64. */ struct edma_regs { void __iomem *cr; void __iomem *es; void __iomem *erqh; void __iomem *erql; /* aka erq on v32 */ void __iomem *eeih; void __iomem *eeil; /* aka eei on v32 */ void __iomem *seei; void __iomem *ceei; void __iomem *serq; void __iomem *cerq; void __iomem *cint; void __iomem *cerr; void __iomem *ssrt; void __iomem *cdne; void __iomem *inth; void __iomem *intl; void __iomem *errh; void __iomem *errl; struct fsl_edma_hw_tcd __iomem *tcd; }; struct fsl_edma_sw_tcd { dma_addr_t ptcd; struct fsl_edma_hw_tcd *vtcd; }; struct fsl_edma_chan { struct virt_dma_chan vchan; enum dma_status status; enum fsl_edma_pm_state pm_state; bool idle; u32 slave_id; struct fsl_edma_engine *edma; struct fsl_edma_desc *edesc; struct dma_slave_config cfg; u32 attr; struct dma_pool *tcd_pool; dma_addr_t dma_dev_addr; u32 dma_dev_size; enum dma_data_direction dma_dir; }; struct fsl_edma_desc { struct virt_dma_desc vdesc; struct fsl_edma_chan *echan; bool iscyclic; enum dma_transfer_direction dirn; unsigned int n_tcds; struct fsl_edma_sw_tcd tcd[]; }; enum edma_version { v1, /* 32ch, Vybrid, mpc57x, etc */ v2, /* 64ch Coldfire */ }; struct fsl_edma_engine { struct dma_device dma_dev; void __iomem *membase; void __iomem *muxbase[DMAMUX_NR]; struct clk *muxclk[DMAMUX_NR]; struct mutex fsl_edma_mutex; u32 n_chans; int txirq; int errirq; bool big_endian; enum edma_version version; struct edma_regs regs; struct fsl_edma_chan chans[]; }; /* * R/W functions for big- or little-endian registers: * The eDMA controller's endian is independent of the CPU core's endian. * For the big-endian IP module, the offset for 8-bit or 16-bit registers * should also be swapped opposite to that in little-endian IP. */ static inline u32 edma_readl(struct fsl_edma_engine *edma, void __iomem *addr) { if (edma->big_endian) return ioread32be(addr); else return ioread32(addr); } static inline void edma_writeb(struct fsl_edma_engine *edma, u8 val, void __iomem *addr) { /* swap the reg offset for these in big-endian mode */ if (edma->big_endian) iowrite8(val, (void __iomem *)((unsigned long)addr ^ 0x3)); else iowrite8(val, addr); } static inline void edma_writew(struct fsl_edma_engine *edma, u16 val, void __iomem *addr) { /* swap the reg offset for these in big-endian mode */ if (edma->big_endian) iowrite16be(val, (void __iomem *)((unsigned long)addr ^ 0x2)); else iowrite16(val, addr); } static inline void edma_writel(struct fsl_edma_engine *edma, u32 val, void __iomem *addr) { if (edma->big_endian) iowrite32be(val, addr); else iowrite32(val, addr); } static inline struct fsl_edma_chan *to_fsl_edma_chan(struct dma_chan *chan) { return container_of(chan, struct fsl_edma_chan, vchan.chan); } static inline struct fsl_edma_desc *to_fsl_edma_desc(struct virt_dma_desc *vd) { return container_of(vd, struct fsl_edma_desc, vdesc); } void fsl_edma_disable_request(struct fsl_edma_chan *fsl_chan); void fsl_edma_chan_mux(struct fsl_edma_chan *fsl_chan, unsigned int slot, bool enable); void fsl_edma_free_desc(struct virt_dma_desc *vdesc); int fsl_edma_terminate_all(struct dma_chan *chan); int fsl_edma_pause(struct dma_chan *chan); int fsl_edma_resume(struct dma_chan *chan); int fsl_edma_slave_config(struct dma_chan *chan, struct dma_slave_config *cfg); enum dma_status fsl_edma_tx_status(struct dma_chan *chan, dma_cookie_t cookie, struct dma_tx_state *txstate); struct dma_async_tx_descriptor *fsl_edma_prep_dma_cyclic( struct dma_chan *chan, dma_addr_t dma_addr, size_t buf_len, size_t period_len, enum dma_transfer_direction direction, unsigned long flags); struct dma_async_tx_descriptor *fsl_edma_prep_slave_sg( struct dma_chan *chan, struct scatterlist *sgl, unsigned int sg_len, enum dma_transfer_direction direction, unsigned long flags, void *context); void fsl_edma_xfer_desc(struct fsl_edma_chan *fsl_chan); void fsl_edma_issue_pending(struct dma_chan *chan); int fsl_edma_alloc_chan_resources(struct dma_chan *chan); void fsl_edma_free_chan_resources(struct dma_chan *chan); void fsl_edma_cleanup_vchan(struct dma_device *dmadev); void fsl_edma_setup_regs(struct fsl_edma_engine *edma); #endif /* _FSL_EDMA_COMMON_H_ */
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