Loading...
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 | /* SPDX-License-Identifier: GPL-1.0+ */ /* * Renesas USB driver * * Copyright (C) 2011 Renesas Solutions Corp. * Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> */ #ifndef RENESAS_USB_FIFO_H #define RENESAS_USB_FIFO_H #include <dma.h> #include "pipe.h" /* * Drivers, using this library are expected to embed struct shdma_dev, * struct shdma_chan, struct shdma_desc, and struct shdma_slave * in their respective device, channel, descriptor and slave objects. */ struct shdma_slave { int slave_id; }; /* Used by slave DMA clients to request DMA to/from a specific peripheral */ struct sh_dmae_slave { struct shdma_slave shdma_slave; /* Set by the platform */ }; struct usbhs_fifo { char *name; u32 port; /* xFIFO */ u32 sel; /* xFIFOSEL */ u32 ctr; /* xFIFOCTR */ struct usbhs_pipe *pipe; struct dma_chan *tx_chan; struct dma_chan *rx_chan; struct sh_dmae_slave tx_slave; struct sh_dmae_slave rx_slave; }; #define USBHS_MAX_NUM_DFIFO 4 struct usbhs_fifo_info { struct usbhs_fifo cfifo; struct usbhs_fifo dfifo[USBHS_MAX_NUM_DFIFO]; }; #define usbhsf_get_dnfifo(p, n) (&((p)->fifo_info.dfifo[n])) #define usbhs_for_each_dfifo(priv, dfifo, i) \ for ((i) = 0; \ ((i) < USBHS_MAX_NUM_DFIFO) && \ ((dfifo) = usbhsf_get_dnfifo(priv, (i))); \ (i)++) struct usbhs_pkt_handle; struct usbhs_pkt { struct list_head node; struct usbhs_pipe *pipe; const struct usbhs_pkt_handle *handler; void (*done)(struct usbhs_priv *priv, struct usbhs_pkt *pkt); struct work_struct work; dma_addr_t dma; const struct dmaengine_result *dma_result; void *buf; int length; int trans; int actual; int zero; int sequence; }; struct usbhs_pkt_handle { int (*prepare)(struct usbhs_pkt *pkt, int *is_done); int (*try_run)(struct usbhs_pkt *pkt, int *is_done); int (*dma_done)(struct usbhs_pkt *pkt, int *is_done); }; /* * fifo */ int usbhs_fifo_probe(struct usbhs_priv *priv); void usbhs_fifo_remove(struct usbhs_priv *priv); void usbhs_fifo_init(struct usbhs_priv *priv); void usbhs_fifo_quit(struct usbhs_priv *priv); void usbhs_fifo_clear_dcp(struct usbhs_pipe *pipe); /* * packet info */ extern const struct usbhs_pkt_handle usbhs_fifo_pio_push_handler; extern const struct usbhs_pkt_handle usbhs_fifo_pio_pop_handler; extern const struct usbhs_pkt_handle usbhs_ctrl_stage_end_handler; extern const struct usbhs_pkt_handle usbhs_fifo_dma_push_handler; extern const struct usbhs_pkt_handle usbhs_fifo_dma_pop_handler; extern const struct usbhs_pkt_handle usbhs_dcp_status_stage_in_handler; extern const struct usbhs_pkt_handle usbhs_dcp_status_stage_out_handler; extern const struct usbhs_pkt_handle usbhs_dcp_data_stage_in_handler; extern const struct usbhs_pkt_handle usbhs_dcp_data_stage_out_handler; void usbhs_pkt_init(struct usbhs_pkt *pkt); void usbhs_pkt_push(struct usbhs_pipe *pipe, struct usbhs_pkt *pkt, void (*done)(struct usbhs_priv *priv, struct usbhs_pkt *pkt), void *buf, int len, int zero, int sequence); struct usbhs_pkt *usbhs_pkt_pop(struct usbhs_pipe *pipe, struct usbhs_pkt *pkt); void usbhs_pkt_start(struct usbhs_pipe *pipe); struct usbhs_pkt *__usbhsf_pkt_get(struct usbhs_pipe *pipe); #endif /* RENESAS_USB_FIFO_H */ |