| /* Copyright (c) 2012-2013, The Linux Foundation. All rights reserved. |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License version 2 and |
| * only 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. |
| */ |
| |
| #ifndef __DBM_H |
| #define __DBM_H |
| |
| #include <linux/types.h> |
| #include <linux/usb/gadget.h> |
| |
| /** |
| * USB DBM Hardware registers bitmask. |
| * |
| */ |
| /* DBM_EP_CFG */ |
| #define DBM_EN_EP 0x00000001 |
| #define USB3_EPNUM 0x0000003E |
| #define DBM_BAM_PIPE_NUM 0x000000C0 |
| #define DBM_PRODUCER 0x00000100 |
| #define DBM_DISABLE_WB 0x00000200 |
| #define DBM_INT_RAM_ACC 0x00000400 |
| |
| /* DBM_DATA_FIFO_SIZE */ |
| #define DBM_DATA_FIFO_SIZE_MASK 0x0000ffff |
| |
| /* DBM_GEVNTSIZ */ |
| #define DBM_GEVNTSIZ_MASK 0x0000ffff |
| |
| /* DBM_DBG_CNFG */ |
| #define DBM_ENABLE_IOC_MASK 0x0000000f |
| |
| /* DBM_SOFT_RESET */ |
| #define DBM_SFT_RST_EP0 0x00000001 |
| #define DBM_SFT_RST_EP1 0x00000002 |
| #define DBM_SFT_RST_EP2 0x00000004 |
| #define DBM_SFT_RST_EP3 0x00000008 |
| #define DBM_SFT_RST_EPS_MASK 0x0000000F |
| #define DBM_SFT_RST_MASK 0x80000000 |
| #define DBM_EN_MASK 0x00000002 |
| |
| /* DBM TRB configurations */ |
| #define DBM_TRB_BIT 0x80000000 |
| #define DBM_TRB_DATA_SRC 0x40000000 |
| #define DBM_TRB_DMA 0x20000000 |
| #define DBM_TRB_EP_NUM(ep) (ep<<24) |
| |
| |
| struct dbm { |
| struct device *dev; |
| struct list_head head; |
| |
| /* Reset the DBM registers upon initialization */ |
| int (*soft_reset)(bool reset); |
| |
| /* Configure a USB DBM ep to work in BAM mode */ |
| int (*ep_config)(u8 usb_ep, u8 bam_pipe, |
| bool producer, bool disable_wb, |
| bool internal_mem, bool ioc); |
| |
| /* Configure a USB DBM ep to work in normal mode */ |
| int (*ep_unconfig)(u8 usb_ep); |
| |
| /* Return number of configured DBM endpoints */ |
| int (*get_num_of_eps_configured)(void); |
| |
| /* Configure the DBM with the USB3 core event buffer */ |
| int (*event_buffer_config)(u32 addr_lo, u32 addr_hi, int size); |
| |
| /* Configure the DBM with the BAM's data fifo */ |
| int (*data_fifo_config)(u8 dep_num, phys_addr_t addr, |
| u32 size, u8 dst_pipe_idx); |
| |
| /* Configure DBM speed : hs/ss */ |
| void (*set_speed)(bool speed); |
| |
| /* Enable DBM */ |
| void (*enable)(void); |
| |
| }; |
| |
| struct dbm *usb_get_dbm_by_phandle(struct device *dev, |
| const char *phandle, u8 index); |
| int usb_add_dbm(struct dbm *x); |
| |
| |
| |
| #define CHECK_DBM_PTR_INT(dbm) do { \ |
| if (!(dbm)) { \ |
| pr_err("Can't call %s, dbp pointer == NULL\n", __func__); \ |
| return -EPERM; \ |
| } \ |
| } while (0) |
| |
| #define CHECK_DBM_PTR_VOID(dbm) do { \ |
| if (!(dbm)) { \ |
| pr_err("Can't call %s, dbp pointer == NULL\n", __func__); \ |
| return; \ |
| } \ |
| } while (0) |
| |
| static inline int dbm_soft_reset(struct dbm *dbm, bool enter_reset) |
| { |
| CHECK_DBM_PTR_INT(dbm); |
| return dbm->soft_reset(enter_reset); |
| } |
| |
| static inline int dbm_ep_config(struct dbm *dbm, u8 usb_ep, u8 bam_pipe, |
| bool producer, bool disable_wb, bool internal_mem, |
| bool ioc) |
| { |
| CHECK_DBM_PTR_INT(dbm); |
| return dbm->ep_config(usb_ep, bam_pipe, producer, disable_wb, |
| internal_mem, ioc); |
| |
| } |
| |
| static inline int dbm_ep_unconfig(struct dbm *dbm, u8 usb_ep) |
| { |
| CHECK_DBM_PTR_INT(dbm); |
| return dbm->ep_unconfig(usb_ep); |
| } |
| |
| static inline int dbm_get_num_of_eps_configured(struct dbm *dbm) |
| { |
| CHECK_DBM_PTR_INT(dbm); |
| return dbm->get_num_of_eps_configured(); |
| } |
| |
| static inline int dbm_event_buffer_config(struct dbm *dbm, u32 addr_lo, |
| u32 addr_hi, int size) |
| { |
| CHECK_DBM_PTR_INT(dbm); |
| return dbm->event_buffer_config(addr_lo, addr_hi, size); |
| } |
| |
| static inline int dbm_data_fifo_config(struct dbm *dbm, u8 dep_num, |
| phys_addr_t addr, u32 size, u8 dst_pipe_idx) |
| { |
| CHECK_DBM_PTR_INT(dbm); |
| return dbm->data_fifo_config(dep_num, addr, size, dst_pipe_idx); |
| } |
| |
| static inline void dbm_set_speed(struct dbm *dbm, bool speed) |
| { |
| CHECK_DBM_PTR_VOID(dbm); |
| dbm->set_speed(speed); |
| } |
| |
| static inline void dbm_enable(struct dbm *dbm) |
| { |
| CHECK_DBM_PTR_VOID(dbm); |
| dbm->enable(); |
| } |
| |
| |
| #endif /* __DBM_H */ |