203 lines
6.0 KiB
C
203 lines
6.0 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* Wireless Host Controller (WHC) private header.
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*
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* Copyright (C) 2007 Cambridge Silicon Radio Ltd.
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*/
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#ifndef __WHCD_H
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#define __WHCD_H
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#include <linux/uwb/whci.h>
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#include <linux/uwb/umc.h>
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#include <linux/workqueue.h>
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#include "whci-hc.h"
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/* Generic command timeout. */
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#define WHC_GENCMD_TIMEOUT_MS 100
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struct whc_dbg;
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struct whc {
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struct wusbhc wusbhc;
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struct umc_dev *umc;
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resource_size_t base_phys;
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void __iomem *base;
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int irq;
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u8 n_devices;
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u8 n_keys;
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u8 n_mmc_ies;
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u64 *pz_list;
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struct dn_buf_entry *dn_buf;
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struct di_buf_entry *di_buf;
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dma_addr_t pz_list_dma;
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dma_addr_t dn_buf_dma;
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dma_addr_t di_buf_dma;
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spinlock_t lock;
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struct mutex mutex;
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void * gen_cmd_buf;
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dma_addr_t gen_cmd_buf_dma;
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wait_queue_head_t cmd_wq;
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struct workqueue_struct *workqueue;
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struct work_struct dn_work;
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struct dma_pool *qset_pool;
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struct list_head async_list;
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struct list_head async_removed_list;
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wait_queue_head_t async_list_wq;
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struct work_struct async_work;
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struct list_head periodic_list[5];
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struct list_head periodic_removed_list;
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wait_queue_head_t periodic_list_wq;
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struct work_struct periodic_work;
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struct whc_dbg *dbg;
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};
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#define wusbhc_to_whc(w) (container_of((w), struct whc, wusbhc))
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/**
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* struct whc_std - a software TD.
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* @urb: the URB this sTD is for.
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* @offset: start of the URB's data for this TD.
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* @len: the length of data in the associated TD.
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* @ntds_remaining: number of TDs (starting from this one) in this transfer.
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*
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* @bounce_buf: a bounce buffer if the std was from an urb with a sg
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* list that could not be mapped to qTDs directly.
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* @bounce_sg: the first scatterlist element bounce_buf is for.
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* @bounce_offset: the offset into bounce_sg for the start of bounce_buf.
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*
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* Queued URBs may require more TDs than are available in a qset so we
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* use a list of these "software TDs" (sTDs) to hold per-TD data.
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*/
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struct whc_std {
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struct urb *urb;
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size_t len;
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int ntds_remaining;
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struct whc_qtd *qtd;
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struct list_head list_node;
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int num_pointers;
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dma_addr_t dma_addr;
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struct whc_page_list_entry *pl_virt;
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void *bounce_buf;
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struct scatterlist *bounce_sg;
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unsigned bounce_offset;
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};
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/**
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* struct whc_urb - per URB host controller structure.
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* @urb: the URB this struct is for.
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* @qset: the qset associated to the URB.
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* @dequeue_work: the work to remove the URB when dequeued.
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* @is_async: the URB belongs to async sheduler or not.
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* @status: the status to be returned when calling wusbhc_giveback_urb.
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*/
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struct whc_urb {
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struct urb *urb;
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struct whc_qset *qset;
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struct work_struct dequeue_work;
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bool is_async;
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int status;
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};
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/**
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* whc_std_last - is this sTD the URB's last?
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* @std: the sTD to check.
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*/
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static inline bool whc_std_last(struct whc_std *std)
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{
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return std->ntds_remaining <= 1;
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}
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enum whc_update {
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WHC_UPDATE_ADDED = 0x01,
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WHC_UPDATE_REMOVED = 0x02,
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WHC_UPDATE_UPDATED = 0x04,
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};
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/* init.c */
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int whc_init(struct whc *whc);
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void whc_clean_up(struct whc *whc);
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/* hw.c */
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void whc_write_wusbcmd(struct whc *whc, u32 mask, u32 val);
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int whc_do_gencmd(struct whc *whc, u32 cmd, u32 params, void *addr, size_t len);
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void whc_hw_error(struct whc *whc, const char *reason);
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/* wusb.c */
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int whc_wusbhc_start(struct wusbhc *wusbhc);
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void whc_wusbhc_stop(struct wusbhc *wusbhc, int delay);
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int whc_mmcie_add(struct wusbhc *wusbhc, u8 interval, u8 repeat_cnt,
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u8 handle, struct wuie_hdr *wuie);
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int whc_mmcie_rm(struct wusbhc *wusbhc, u8 handle);
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int whc_bwa_set(struct wusbhc *wusbhc, s8 stream_index, const struct uwb_mas_bm *mas_bm);
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int whc_dev_info_set(struct wusbhc *wusbhc, struct wusb_dev *wusb_dev);
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int whc_set_num_dnts(struct wusbhc *wusbhc, u8 interval, u8 slots);
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int whc_set_ptk(struct wusbhc *wusbhc, u8 port_idx, u32 tkid,
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const void *ptk, size_t key_size);
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int whc_set_gtk(struct wusbhc *wusbhc, u32 tkid,
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const void *gtk, size_t key_size);
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int whc_set_cluster_id(struct whc *whc, u8 bcid);
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/* int.c */
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irqreturn_t whc_int_handler(struct usb_hcd *hcd);
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void whc_dn_work(struct work_struct *work);
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/* asl.c */
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void asl_start(struct whc *whc);
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void asl_stop(struct whc *whc);
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int asl_init(struct whc *whc);
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void asl_clean_up(struct whc *whc);
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int asl_urb_enqueue(struct whc *whc, struct urb *urb, gfp_t mem_flags);
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int asl_urb_dequeue(struct whc *whc, struct urb *urb, int status);
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void asl_qset_delete(struct whc *whc, struct whc_qset *qset);
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void scan_async_work(struct work_struct *work);
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/* pzl.c */
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int pzl_init(struct whc *whc);
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void pzl_clean_up(struct whc *whc);
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void pzl_start(struct whc *whc);
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void pzl_stop(struct whc *whc);
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int pzl_urb_enqueue(struct whc *whc, struct urb *urb, gfp_t mem_flags);
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int pzl_urb_dequeue(struct whc *whc, struct urb *urb, int status);
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void pzl_qset_delete(struct whc *whc, struct whc_qset *qset);
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void scan_periodic_work(struct work_struct *work);
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/* qset.c */
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struct whc_qset *qset_alloc(struct whc *whc, gfp_t mem_flags);
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void qset_free(struct whc *whc, struct whc_qset *qset);
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struct whc_qset *get_qset(struct whc *whc, struct urb *urb, gfp_t mem_flags);
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void qset_delete(struct whc *whc, struct whc_qset *qset);
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void qset_clear(struct whc *whc, struct whc_qset *qset);
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void qset_reset(struct whc *whc, struct whc_qset *qset);
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int qset_add_urb(struct whc *whc, struct whc_qset *qset, struct urb *urb,
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gfp_t mem_flags);
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void qset_free_std(struct whc *whc, struct whc_std *std);
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void qset_remove_urb(struct whc *whc, struct whc_qset *qset,
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struct urb *urb, int status);
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void process_halted_qtd(struct whc *whc, struct whc_qset *qset,
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struct whc_qtd *qtd);
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void process_inactive_qtd(struct whc *whc, struct whc_qset *qset,
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struct whc_qtd *qtd);
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enum whc_update qset_add_qtds(struct whc *whc, struct whc_qset *qset);
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void qset_remove_complete(struct whc *whc, struct whc_qset *qset);
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void pzl_update(struct whc *whc, uint32_t wusbcmd);
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void asl_update(struct whc *whc, uint32_t wusbcmd);
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/* debug.c */
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void whc_dbg_init(struct whc *whc);
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void whc_dbg_clean_up(struct whc *whc);
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#endif /* #ifndef __WHCD_H */
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