diff options
Diffstat (limited to 'drivers/dma/ti/k3-udma.h')
| -rw-r--r-- | drivers/dma/ti/k3-udma.h | 140 |
1 files changed, 140 insertions, 0 deletions
diff --git a/drivers/dma/ti/k3-udma.h b/drivers/dma/ti/k3-udma.h new file mode 100644 index 000000000..09c4529e0 --- /dev/null +++ b/drivers/dma/ti/k3-udma.h @@ -0,0 +1,140 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (C) 2019 Texas Instruments Incorporated - http://www.ti.com + */ + +#ifndef K3_UDMA_H_ +#define K3_UDMA_H_ + +#include <linux/soc/ti/ti_sci_protocol.h> + +/* Global registers */ +#define UDMA_REV_REG 0x0 +#define UDMA_PERF_CTL_REG 0x4 +#define UDMA_EMU_CTL_REG 0x8 +#define UDMA_PSIL_TO_REG 0x10 +#define UDMA_UTC_CTL_REG 0x1c +#define UDMA_CAP_REG(i) (0x20 + ((i) * 4)) +#define UDMA_RX_FLOW_ID_FW_OES_REG 0x80 +#define UDMA_RX_FLOW_ID_FW_STATUS_REG 0x88 + +/* TCHANRT/RCHANRT registers */ +#define UDMA_CHAN_RT_CTL_REG 0x0 +#define UDMA_CHAN_RT_SWTRIG_REG 0x8 +#define UDMA_CHAN_RT_STDATA_REG 0x80 + +#define UDMA_CHAN_RT_PEER_REG(i) (0x200 + ((i) * 0x4)) +#define UDMA_CHAN_RT_PEER_STATIC_TR_XY_REG \ + UDMA_CHAN_RT_PEER_REG(0) /* PSI-L: 0x400 */ +#define UDMA_CHAN_RT_PEER_STATIC_TR_Z_REG \ + UDMA_CHAN_RT_PEER_REG(1) /* PSI-L: 0x401 */ +#define UDMA_CHAN_RT_PEER_BCNT_REG \ + UDMA_CHAN_RT_PEER_REG(4) /* PSI-L: 0x404 */ +#define UDMA_CHAN_RT_PEER_RT_EN_REG \ + UDMA_CHAN_RT_PEER_REG(8) /* PSI-L: 0x408 */ + +#define UDMA_CHAN_RT_PCNT_REG 0x400 +#define UDMA_CHAN_RT_BCNT_REG 0x408 +#define UDMA_CHAN_RT_SBCNT_REG 0x410 + +/* UDMA_CAP Registers */ +#define UDMA_CAP2_TCHAN_CNT(val) ((val) & 0x1ff) +#define UDMA_CAP2_ECHAN_CNT(val) (((val) >> 9) & 0x1ff) +#define UDMA_CAP2_RCHAN_CNT(val) (((val) >> 18) & 0x1ff) +#define UDMA_CAP3_RFLOW_CNT(val) ((val) & 0x3fff) +#define UDMA_CAP3_HCHAN_CNT(val) (((val) >> 14) & 0x1ff) +#define UDMA_CAP3_UCHAN_CNT(val) (((val) >> 23) & 0x1ff) + +/* UDMA_CHAN_RT_CTL_REG */ +#define UDMA_CHAN_RT_CTL_EN BIT(31) +#define UDMA_CHAN_RT_CTL_TDOWN BIT(30) +#define UDMA_CHAN_RT_CTL_PAUSE BIT(29) +#define UDMA_CHAN_RT_CTL_FTDOWN BIT(28) +#define UDMA_CHAN_RT_CTL_ERROR BIT(0) + +/* UDMA_CHAN_RT_PEER_RT_EN_REG */ +#define UDMA_PEER_RT_EN_ENABLE BIT(31) +#define UDMA_PEER_RT_EN_TEARDOWN BIT(30) +#define UDMA_PEER_RT_EN_PAUSE BIT(29) +#define UDMA_PEER_RT_EN_FLUSH BIT(28) +#define UDMA_PEER_RT_EN_IDLE BIT(1) + +/* + * UDMA_TCHAN_RT_PEER_STATIC_TR_XY_REG / + * UDMA_RCHAN_RT_PEER_STATIC_TR_XY_REG + */ +#define PDMA_STATIC_TR_X_MASK GENMASK(26, 24) +#define PDMA_STATIC_TR_X_SHIFT (24) +#define PDMA_STATIC_TR_Y_MASK GENMASK(11, 0) +#define PDMA_STATIC_TR_Y_SHIFT (0) + +#define PDMA_STATIC_TR_Y(x) \ + (((x) << PDMA_STATIC_TR_Y_SHIFT) & PDMA_STATIC_TR_Y_MASK) +#define PDMA_STATIC_TR_X(x) \ + (((x) << PDMA_STATIC_TR_X_SHIFT) & PDMA_STATIC_TR_X_MASK) + +#define PDMA_STATIC_TR_XY_ACC32 BIT(30) +#define PDMA_STATIC_TR_XY_BURST BIT(31) + +/* + * UDMA_TCHAN_RT_PEER_STATIC_TR_Z_REG / + * UDMA_RCHAN_RT_PEER_STATIC_TR_Z_REG + */ +#define PDMA_STATIC_TR_Z(x, mask) ((x) & (mask)) + +struct udma_dev; +struct udma_tchan; +struct udma_rchan; +struct udma_rflow; + +enum udma_rm_range { + RM_RANGE_TCHAN = 0, + RM_RANGE_RCHAN, + RM_RANGE_RFLOW, + RM_RANGE_LAST, +}; + +struct udma_tisci_rm { + const struct ti_sci_handle *tisci; + const struct ti_sci_rm_udmap_ops *tisci_udmap_ops; + u32 tisci_dev_id; + + /* tisci information for PSI-L thread pairing/unpairing */ + const struct ti_sci_rm_psil_ops *tisci_psil_ops; + u32 tisci_navss_dev_id; + + struct ti_sci_resource *rm_ranges[RM_RANGE_LAST]; +}; + +/* Direct access to UDMA low lever resources for the glue layer */ +int xudma_navss_psil_pair(struct udma_dev *ud, u32 src_thread, u32 dst_thread); +int xudma_navss_psil_unpair(struct udma_dev *ud, u32 src_thread, + u32 dst_thread); + +struct udma_dev *of_xudma_dev_get(struct device_node *np, const char *property); +void xudma_dev_put(struct udma_dev *ud); +u32 xudma_dev_get_psil_base(struct udma_dev *ud); +struct udma_tisci_rm *xudma_dev_get_tisci_rm(struct udma_dev *ud); + +int xudma_alloc_gp_rflow_range(struct udma_dev *ud, int from, int cnt); +int xudma_free_gp_rflow_range(struct udma_dev *ud, int from, int cnt); + +struct udma_tchan *xudma_tchan_get(struct udma_dev *ud, int id); +struct udma_rchan *xudma_rchan_get(struct udma_dev *ud, int id); +struct udma_rflow *xudma_rflow_get(struct udma_dev *ud, int id); + +void xudma_tchan_put(struct udma_dev *ud, struct udma_tchan *p); +void xudma_rchan_put(struct udma_dev *ud, struct udma_rchan *p); +void xudma_rflow_put(struct udma_dev *ud, struct udma_rflow *p); + +int xudma_tchan_get_id(struct udma_tchan *p); +int xudma_rchan_get_id(struct udma_rchan *p); +int xudma_rflow_get_id(struct udma_rflow *p); + +u32 xudma_tchanrt_read(struct udma_tchan *tchan, int reg); +void xudma_tchanrt_write(struct udma_tchan *tchan, int reg, u32 val); +u32 xudma_rchanrt_read(struct udma_rchan *rchan, int reg); +void xudma_rchanrt_write(struct udma_rchan *rchan, int reg, u32 val); +bool xudma_rflow_is_gp(struct udma_dev *ud, int id); + +#endif /* K3_UDMA_H_ */ |