// SPDX-License-Identifier: GPL-1.0+ /* * Renesas USB driver * * Copyright (C) 2011 Renesas Solutions Corp. * Kuninori Morimoto <[email protected]> */ #include <linux/io.h> #include <linux/list.h> #include <linux/module.h> #include <linux/platform_device.h> #include <linux/slab.h> #include <linux/usb.h> #include <linux/usb/hcd.h> #include "common.h" /* *** HARDWARE LIMITATION *** * * 1) renesas_usbhs has a limited number of controllable devices. * it can control only 9 devices in generally. * see DEVADDn / DCPMAXP / PIPEMAXP. * * 2) renesas_usbhs pipe number is limited. * the pipe will be re-used for each devices. * so, software should control DATA0/1 sequence of each devices. */ /* * image of mod_host * * +--------+ * | udev 0 | --> it is used when set address * +--------+ * * +--------+ pipes are reused for each uep. * | udev 1 |-+- [uep 0 (dcp) ] --+ pipe will be switched when * +--------+ | | other device requested * +- [uep 1 (bulk)] --|---+ +--------------+ * | +--------------> | pipe0 (dcp) | * +- [uep 2 (bulk)] -@ | +--------------+ * | | pipe1 (isoc) | * +--------+ | +--------------+ * | udev 2 |-+- [uep 0 (dcp) ] -@ +----------> | pipe2 (bulk) | * +--------+ | +--------------+ * +- [uep 1 (int) ] ----+ +------> | pipe3 (bulk) | * | | +--------------+ * +--------+ +-----|------> | pipe4 (int) | * | udev 3 |-+- [uep 0 (dcp) ] -@ | +--------------+ * +--------+ | | | .... | * +- [uep 1 (bulk)] -@ | | .... | * | | * +- [uep 2 (bulk)]-----------+ * * @ : uep requested free pipe, but all have been used. * now it is waiting for free pipe */ /* * struct */ struct usbhsh_request { … }; struct usbhsh_device { … }; struct usbhsh_ep { … }; #define USBHSH_DEVICE_MAX … #define USBHSH_PORT_MAX … struct usbhsh_hpriv { … }; static const char usbhsh_hcd_name[] = …; /* * macro */ #define usbhsh_priv_to_hpriv(priv) … #define __usbhsh_for_each_udev(start, pos, h, i) … #define usbhsh_for_each_udev(pos, hpriv, i) … #define usbhsh_for_each_udev_with_dev0(pos, hpriv, i) … #define usbhsh_hcd_to_hpriv(h) … #define usbhsh_hcd_to_dev(h) … #define usbhsh_hpriv_to_priv(h) … #define usbhsh_hpriv_to_dcp(h) … #define usbhsh_hpriv_to_hcd(h) … #define usbhsh_ep_to_uep(u) … #define usbhsh_uep_to_pipe(u) … #define usbhsh_uep_to_udev(u) … #define usbhsh_uep_to_ep(u) … #define usbhsh_urb_to_ureq(u) … #define usbhsh_urb_to_usbv(u) … #define usbhsh_usbv_to_udev(d) … #define usbhsh_udev_to_usbv(h) … #define usbhsh_udev_is_used(h) … #define usbhsh_pipe_to_uep(p) … #define usbhsh_device_parent(d) … #define usbhsh_device_hubport(d) … #define usbhsh_device_number(h, d) … #define usbhsh_device_nth(h, d) … #define usbhsh_device0(h) … #define usbhsh_port_stat_init(h) … #define usbhsh_port_stat_set(h, s) … #define usbhsh_port_stat_clear(h, s) … #define usbhsh_port_stat_get(h) … #define usbhsh_pkt_to_ureq(p) … /* * req alloc/free */ static struct usbhsh_request *usbhsh_ureq_alloc(struct usbhsh_hpriv *hpriv, struct urb *urb, gfp_t mem_flags) { … } static void usbhsh_ureq_free(struct usbhsh_hpriv *hpriv, struct usbhsh_request *ureq) { … } /* * status */ static int usbhsh_is_running(struct usbhsh_hpriv *hpriv) { … } /* * pipe control */ static void usbhsh_endpoint_sequence_save(struct usbhsh_hpriv *hpriv, struct urb *urb, struct usbhs_pkt *pkt) { … } static struct usbhsh_device *usbhsh_device_get(struct usbhsh_hpriv *hpriv, struct urb *urb); static int usbhsh_pipe_attach(struct usbhsh_hpriv *hpriv, struct urb *urb) { … } static void usbhsh_pipe_detach(struct usbhsh_hpriv *hpriv, struct usbhsh_ep *uep) { … } /* * endpoint control */ static int usbhsh_endpoint_attach(struct usbhsh_hpriv *hpriv, struct urb *urb, gfp_t mem_flags) { … } static void usbhsh_endpoint_detach(struct usbhsh_hpriv *hpriv, struct usb_host_endpoint *ep) { … } static void usbhsh_endpoint_detach_all(struct usbhsh_hpriv *hpriv, struct usbhsh_device *udev) { … } /* * device control */ static int usbhsh_connected_to_rhdev(struct usb_hcd *hcd, struct usbhsh_device *udev) { … } static int usbhsh_device_has_endpoint(struct usbhsh_device *udev) { … } static struct usbhsh_device *usbhsh_device_get(struct usbhsh_hpriv *hpriv, struct urb *urb) { … } static struct usbhsh_device *usbhsh_device_attach(struct usbhsh_hpriv *hpriv, struct urb *urb) { … } static void usbhsh_device_detach(struct usbhsh_hpriv *hpriv, struct usbhsh_device *udev) { … } /* * queue push/pop */ static void usbhsh_queue_done(struct usbhs_priv *priv, struct usbhs_pkt *pkt) { … } static int usbhsh_queue_push(struct usb_hcd *hcd, struct urb *urb, gfp_t mem_flags) { … } static void usbhsh_queue_force_pop(struct usbhs_priv *priv, struct usbhs_pipe *pipe) { … } static void usbhsh_queue_force_pop_all(struct usbhs_priv *priv) { … } /* * DCP setup stage */ static int usbhsh_is_request_address(struct urb *urb) { … } static void usbhsh_setup_stage_packet_push(struct usbhsh_hpriv *hpriv, struct urb *urb, struct usbhs_pipe *pipe) { … } /* * DCP data stage */ static void usbhsh_data_stage_packet_done(struct usbhs_priv *priv, struct usbhs_pkt *pkt) { … } static int usbhsh_data_stage_packet_push(struct usbhsh_hpriv *hpriv, struct urb *urb, struct usbhs_pipe *pipe, gfp_t mem_flags) { … } /* * DCP status stage */ static int usbhsh_status_stage_packet_push(struct usbhsh_hpriv *hpriv, struct urb *urb, struct usbhs_pipe *pipe, gfp_t mem_flags) { … } static int usbhsh_dcp_queue_push(struct usb_hcd *hcd, struct urb *urb, gfp_t mflags) { … } /* * dma map functions */ static int usbhsh_dma_map_ctrl(struct device *dma_dev, struct usbhs_pkt *pkt, int map) { … } /* * for hc_driver */ static int usbhsh_host_start(struct usb_hcd *hcd) { … } static void usbhsh_host_stop(struct usb_hcd *hcd) { … } static int usbhsh_urb_enqueue(struct usb_hcd *hcd, struct urb *urb, gfp_t mem_flags) { … } static int usbhsh_urb_dequeue(struct usb_hcd *hcd, struct urb *urb, int status) { … } static void usbhsh_endpoint_disable(struct usb_hcd *hcd, struct usb_host_endpoint *ep) { … } static int usbhsh_hub_status_data(struct usb_hcd *hcd, char *buf) { … } static int __usbhsh_hub_hub_feature(struct usbhsh_hpriv *hpriv, u16 typeReq, u16 wValue, u16 wIndex, char *buf, u16 wLength) { … } static int __usbhsh_hub_port_feature(struct usbhsh_hpriv *hpriv, u16 typeReq, u16 wValue, u16 wIndex, char *buf, u16 wLength) { … } static int __usbhsh_hub_get_status(struct usbhsh_hpriv *hpriv, u16 typeReq, u16 wValue, u16 wIndex, char *buf, u16 wLength) { … } static int usbhsh_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue, u16 wIndex, char *buf, u16 wLength) { … } static int usbhsh_bus_nop(struct usb_hcd *hcd) { … } static const struct hc_driver usbhsh_driver = …; /* * interrupt functions */ static int usbhsh_irq_attch(struct usbhs_priv *priv, struct usbhs_irq_state *irq_state) { … } static int usbhsh_irq_dtch(struct usbhs_priv *priv, struct usbhs_irq_state *irq_state) { … } static int usbhsh_irq_setup_ack(struct usbhs_priv *priv, struct usbhs_irq_state *irq_state) { … } static int usbhsh_irq_setup_err(struct usbhs_priv *priv, struct usbhs_irq_state *irq_state) { … } /* * module start/stop */ static void usbhsh_pipe_init_for_host(struct usbhs_priv *priv) { … } static int usbhsh_start(struct usbhs_priv *priv) { … } static int usbhsh_stop(struct usbhs_priv *priv) { … } int usbhs_mod_host_probe(struct usbhs_priv *priv) { … } int usbhs_mod_host_remove(struct usbhs_priv *priv) { … }
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