cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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renesas_usbhs.h (4303B)

      1// SPDX-License-Identifier: GPL-1.0+
      2/*
      3 * Renesas USB
      4 *
      5 * Copyright (C) 2011 Renesas Solutions Corp.
      6 * Copyright (C) 2019 Renesas Electronics Corporation
      7 * Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
      8 *
      9 * This program is distributed in the hope that it will be useful,
     10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
     11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
     12 * GNU General Public License for more details.
     13 *
     14 * You should have received a copy of the GNU General Public License
     15 * along with this program; if not, write to the Free Software
     16 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
     17 *
     18 */
     19#ifndef RENESAS_USB_H
     20#define RENESAS_USB_H
     21#include <linux/notifier.h>
     22#include <linux/platform_device.h>
     23#include <linux/usb/ch9.h>
     24
     25/*
     26 * module type
     27 *
     28 * it will be return value from get_id
     29 */
     30enum {
     31	USBHS_HOST = 0,
     32	USBHS_GADGET,
     33	USBHS_MAX,
     34};
     35
     36/*
     37 * callback functions for platform
     38 *
     39 * These functions are called from driver for platform
     40 */
     41struct renesas_usbhs_platform_callback {
     42
     43	/*
     44	 * option:
     45	 *
     46	 * Hardware init function for platform.
     47	 * it is called when driver was probed.
     48	 */
     49	int (*hardware_init)(struct platform_device *pdev);
     50
     51	/*
     52	 * option:
     53	 *
     54	 * Hardware exit function for platform.
     55	 * it is called when driver was removed
     56	 */
     57	int (*hardware_exit)(struct platform_device *pdev);
     58
     59	/*
     60	 * option:
     61	 *
     62	 * for board specific clock control
     63	 */
     64	int (*power_ctrl)(struct platform_device *pdev,
     65			   void __iomem *base, int enable);
     66
     67	/*
     68	 * option:
     69	 *
     70	 * Phy reset for platform
     71	 */
     72	int (*phy_reset)(struct platform_device *pdev);
     73
     74	/*
     75	 * get USB ID function
     76	 *  - USBHS_HOST
     77	 *  - USBHS_GADGET
     78	 */
     79	int (*get_id)(struct platform_device *pdev);
     80
     81	/*
     82	 * get VBUS status function.
     83	 */
     84	int (*get_vbus)(struct platform_device *pdev);
     85
     86	/*
     87	 * option:
     88	 *
     89	 * VBUS control is needed for Host
     90	 */
     91	int (*set_vbus)(struct platform_device *pdev, int enable);
     92
     93	/*
     94	 * option:
     95	 * extcon notifier to set host/peripheral mode.
     96	 */
     97	int (*notifier)(struct notifier_block *nb, unsigned long event,
     98			void *data);
     99};
    100
    101/*
    102 * parameters for renesas usbhs
    103 *
    104 * some register needs USB chip specific parameters.
    105 * This struct show it to driver
    106 */
    107
    108struct renesas_usbhs_driver_pipe_config {
    109	u8 type;	/* USB_ENDPOINT_XFER_xxx */
    110	u16 bufsize;
    111	u8 bufnum;
    112	bool double_buf;
    113};
    114#define RENESAS_USBHS_PIPE(_type, _size, _num, _double_buf)	{	\
    115			.type = (_type),		\
    116			.bufsize = (_size),		\
    117			.bufnum = (_num),		\
    118			.double_buf = (_double_buf),	\
    119	}
    120
    121struct renesas_usbhs_driver_param {
    122	/*
    123	 * pipe settings
    124	 */
    125	struct renesas_usbhs_driver_pipe_config *pipe_configs;
    126	int pipe_size; /* pipe_configs array size */
    127
    128	/*
    129	 * option:
    130	 *
    131	 * for BUSWAIT :: BWAIT
    132	 * see
    133	 *	renesas_usbhs/common.c :: usbhsc_set_buswait()
    134	 * */
    135	int buswait_bwait;
    136
    137	/*
    138	 * option:
    139	 *
    140	 * delay time from notify_hotplug callback
    141	 */
    142	int detection_delay; /* msec */
    143
    144	/*
    145	 * option:
    146	 *
    147	 * dma id for dmaengine
    148	 * The data transfer direction on D0FIFO/D1FIFO should be
    149	 * fixed for keeping consistency.
    150	 * So, the platform id settings will be..
    151	 *	.d0_tx_id = xx_TX,
    152	 *	.d1_rx_id = xx_RX,
    153	 * or
    154	 *	.d1_tx_id = xx_TX,
    155	 *	.d0_rx_id = xx_RX,
    156	 */
    157	int d0_tx_id;
    158	int d0_rx_id;
    159	int d1_tx_id;
    160	int d1_rx_id;
    161	int d2_tx_id;
    162	int d2_rx_id;
    163	int d3_tx_id;
    164	int d3_rx_id;
    165
    166	/*
    167	 * option:
    168	 *
    169	 * pio <--> dma border.
    170	 */
    171	int pio_dma_border; /* default is 64byte */
    172
    173	/*
    174	 * option:
    175	 */
    176	u32 has_usb_dmac:1; /* for USB-DMAC */
    177	u32 runtime_pwctrl:1;
    178	u32 has_cnen:1;
    179	u32 cfifo_byte_addr:1; /* CFIFO is byte addressable */
    180#define USBHS_USB_DMAC_XFER_SIZE	32	/* hardcode the xfer size */
    181	u32 multi_clks:1;
    182	u32 has_new_pipe_configs:1;
    183};
    184
    185/*
    186 * option:
    187 *
    188 * platform information for renesas_usbhs driver.
    189 */
    190struct renesas_usbhs_platform_info {
    191	/*
    192	 * option:
    193	 *
    194	 * platform set these functions before
    195	 * call platform_add_devices if needed
    196	 */
    197	struct renesas_usbhs_platform_callback	platform_callback;
    198
    199	/*
    200	 * option:
    201	 *
    202	 * driver use these param for some register
    203	 */
    204	struct renesas_usbhs_driver_param	driver_param;
    205};
    206
    207/*
    208 * macro for platform
    209 */
    210#define renesas_usbhs_get_info(pdev)\
    211	((struct renesas_usbhs_platform_info *)(pdev)->dev.platform_data)
    212#endif /* RENESAS_USB_H */