ASR_BASE
Change-Id: Icf3719cc0afe3eeb3edc7fa80a2eb5199ca9dda1
diff --git a/marvell/linux/drivers/dma/fsl-edma-common.h b/marvell/linux/drivers/dma/fsl-edma-common.h
new file mode 100644
index 0000000..6ff7063
--- /dev/null
+++ b/marvell/linux/drivers/dma/fsl-edma-common.h
@@ -0,0 +1,249 @@
+/* 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 <linux/platform_device.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(2) | 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;
+ char chan_name[16];
+};
+
+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 */
+ v3, /* 32ch, i.mx7ulp */
+};
+
+struct fsl_edma_drvdata {
+ enum edma_version version;
+ u32 dmamuxs;
+ bool has_dmaclk;
+ int (*setup_irq)(struct platform_device *pdev,
+ struct fsl_edma_engine *fsl_edma);
+};
+
+struct fsl_edma_engine {
+ struct dma_device dma_dev;
+ void __iomem *membase;
+ void __iomem *muxbase[DMAMUX_NR];
+ struct clk *muxclk[DMAMUX_NR];
+ struct clk *dmaclk;
+ struct mutex fsl_edma_mutex;
+ const struct fsl_edma_drvdata *drvdata;
+ u32 n_chans;
+ int txirq;
+ int errirq;
+ bool big_endian;
+ 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_ */