/*
* Wireless Host Controller (WHC) private header.
*
* Copyright (C) 2007 Cambridge Silicon Radio Ltd.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License version
* 2 as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
* 02110-1301, USA.
*/
#ifndef __WHCD_H
#define __WHCD_H
#include <linux/uwb/whci.h>
#include <linux/uwb/umc.h>
#include <linux/workqueue.h>
#include "whci-hc.h"
/* Generic command timeout. */
#define WHC_GENCMD_TIMEOUT_MS 100
struct whc_dbg;
struct whc {
struct wusbhc wusbhc;
struct umc_dev *umc;
resource_size_t base_phys;
void __iomem *base;
int irq;
u8 n_devices;
u8 n_keys;
u8 n_mmc_ies;
u64 *pz_list;
struct dn_buf_entry *dn_buf;
struct di_buf_entry *di_buf;
dma_addr_t pz_list_dma;
dma_addr_t dn_buf_dma;
dma_addr_t di_buf_dma;
spinlock_t lock;
struct mutex mutex;
void * gen_cmd_buf;
dma_addr_t gen_cmd_buf_dma;
wait_queue_head_t cmd_wq;
struct workqueue_struct *workqueue;
struct work_struct dn_work;
struct dma_pool *qset_pool;
struct list_head async_list;
struct list_head async_removed_list;
wait_queue_head_t async_list_wq;
struct work_struct async_work;
struct list_head periodic_list[5];
struct list_head periodic_removed_list;
wait_queue_head_t periodic_list_wq;
struct work_struct periodic_work;
struct whc_dbg *dbg;
};
#define wusbhc_to_whc(w) (container_of((w), struct whc, wusbhc))
/**
* struct whc_std - a software TD.
* @urb: the URB this sTD is for.
* @offset: start of the URB's data for this TD.
* @len: the length of data in the associated TD.
* @ntds_remaining: number of TDs (starting from this one) in this transfer.
*
* @bounce_buf: a bounce buffer if the std was from an urb with a sg
* list that could not be mapped to qTDs directly.
* @bounce_sg: the first scatterlist element bounce_buf is for.
* @bounce_offset: the offset into bounce_sg for the start of bounce_buf.
*
* Queued URBs may require more TDs than are available in a qset so we
* use a list of these "software TDs" (sTDs) to hold per-TD data.
*/
struct whc_std {
struct urb *urb;
size_t len;
int ntds_remaining;
struct whc_qtd *qtd;
struct list_head list_node;
int num_pointers;
dma_addr_t dma_addr;
struct whc_page_list_entry *pl_virt;
void *bounce_buf;
struct scatterlist *bounce_sg;
unsigned bounce_offset;
};
/**
* struct whc_urb - per URB host controller structure.
* @urb: the URB this struct is for.
* @qset: the qset associated to the URB.
* @dequeue_work: the work to remove the URB when dequeued.
* @is_async: the URB belongs to async sheduler or not.
* @status: the status to be returned when calling wusbhc_giveback_urb.
*/
struct whc_urb {
struct urb *urb;
struct whc_qset *qset;
struct work_struct dequeue_work;
bool is_async;
int status;
};
/**
* whc_std_last - is this sTD the URB's last?
* @std: the sTD to check.
*/
static inline bool whc_std_last(struct whc_std *std)
{
return std->ntds_remaining <= 1;
}
enum whc_update {
WHC_UPDATE_ADDED = 0x01,
WHC_UPDATE_REMOVED = 0x02,
WHC_UPDATE_UPDATED = 0x04,
};
/* init.c */
int whc_init(struct whc *whc);
void whc_clean_up(struct whc *whc);
/* hw.c */
void whc_write_wusbcmd(struct whc *whc, u32 mask, u32 val);
int whc_do_gencmd(struct whc *whc, u32 cmd, u32 params, void *addr, size_t len);
void whc_hw_error(struct whc *whc, const char *reason);
/* wusb.c */
int whc_wusbhc_start(struct wusbhc *wusbhc);
void whc_wusbhc_stop(struct wusbhc *wusbhc, int delay);
int whc_mmcie_add(struct wusbhc *wusbhc, u8 interval, u8 repeat_cnt,
u8 handle, struct wuie_hdr *wuie);
int whc_mmcie_rm(struct wusbhc *wusbhc, u8 handle);
int whc_bwa_set(struct wusbhc *wusbhc, s8 stream_index, const struct uwb_mas_bm *mas_bm);
int whc_dev_info_set(struct wusbhc *wusbhc, struct wusb_dev *wusb_dev);
int whc_set_num_dnts(struct wusbhc *wusbhc, u8 interval, u8 slots);
int whc_set_ptk(struct wusbhc *wusbhc, u8 port_idx, u32 tkid,
const void *ptk, size_t key_size);
int whc_set_gtk(struct wusbhc *wusbhc, u32 tkid,
const void *gtk, size_t key_size);
int whc_set_cluster_id(struct whc *whc, u8 bcid);
/* int.c */
irqreturn_t whc_int_handler(struct usb_hcd *hcd);
void whc_dn_work(struct work_struct *work);
/* asl.c */
void asl_start(struct whc *whc);
void asl_stop(struct whc *whc);
int asl_init(struct whc *whc);
void asl_clean_up(struct whc *whc);
int asl_urb_enqueue(struct whc *whc, struct urb *urb, gfp_t mem_flags);
int asl_urb_dequeue(struct whc *whc, struct urb *urb, int status);
void asl_qset_delete(struct whc *whc, struct whc_qset *qset);
void scan_async_work(struct work_struct *work);
/* pzl.c */
int pzl_init(struct whc *whc);
void pzl_clean_up(struct whc *whc);
void pzl_start(struct whc *whc);
void pzl_stop(struct whc *whc);
int pzl_urb_enqueue(struct whc *whc, struct urb *urb, gfp_t mem_flags);
int pzl_urb_dequeue(struct whc *whc, struct urb *urb, int status);
void pzl_qset_delete(struct whc *whc, struct whc_qset *qset);
void scan_periodic_work(struct work_struct *work);
/* qset.c */
struct whc_qset *qset_alloc(struct whc *whc, gfp_t mem_flags);
void qset_free(struct whc *whc, struct whc_qset *qset);
struct whc_qset *get_qset(struct whc *whc, struct urb *urb, gfp_t mem_flags);
void qset_delete(struct whc *whc, struct whc_qset *qset);
void qset_clear(struct whc *whc, struct whc_qset *qset);
void qset_reset(struct whc *whc, struct whc_qset *qset);
int qset_add_urb(struct whc *whc, struct whc_qset *qset, struct urb *urb,
gfp_t mem_flags);
void qset_free_std(struct whc *whc, struct whc_std *std);
void qset_remove_urb(struct whc *whc, struct whc_qset *qset,
struct urb *urb, int status);
void process_halted_qtd(struct whc *whc, struct whc_qset *qset,
struct whc_qtd *qtd);
void process_inactive_qtd(struct whc *whc, struct whc_qset *qset,
struct whc_qtd *qtd);
enum whc_update qset_add_qtds(struct whc *whc, struct whc_qset *qset);
void qset_remove_complete(struct whc *whc, struct whc_qset *qset);
void pzl_update(struct whc *whc, uint32_t wusbcmd);
void asl_update(struct whc *whc, uint32_t wusbcmd);
/* debug.c */
void whc_dbg_init(struct whc *whc);
void whc_dbg_clean_up(struct whc *whc);
#endif /* #ifndef __WHCD_H */
