// SPDX-License-Identifier: GPL-2.0+
/*
* c67x00.h: Cypress C67X00 USB register and field definitions
*
* Copyright (C) 2006-2008 Barco N.V.
* Derived from the Cypress cy7c67200/300 ezusb linux driver and
* based on multiple host controller drivers inside the linux kernel.
*/
#ifndef _USB_C67X00_H
#define _USB_C67X00_H
#include <linux/spinlock.h>
#include <linux/platform_device.h>
#include <linux/completion.h>
#include <linux/mutex.h>
/* ---------------------------------------------------------------------
* Cypress C67x00 register definitions
*/
/* Hardware Revision Register */
#define HW_REV_REG 0xC004
/* General USB registers */
/* ===================== */
/* USB Control Register */
#define USB_CTL_REG(x) ((x) ? 0xC0AA : 0xC08A)
#define LOW_SPEED_PORT(x) ((x) ? 0x0800 : 0x0400)
#define HOST_MODE 0x0200
#define PORT_RES_EN(x) ((x) ? 0x0100 : 0x0080)
#define SOF_EOP_EN(x) ((x) ? 0x0002 : 0x0001)
/* USB status register - Notice it has different content in hcd/udc mode */
#define USB_STAT_REG(x) ((x) ? 0xC0B0 : 0xC090)
#define EP0_IRQ_FLG 0x0001
#define EP1_IRQ_FLG 0x0002
#define EP2_IRQ_FLG 0x0004
#define EP3_IRQ_FLG 0x0008
#define EP4_IRQ_FLG 0x0010
#define EP5_IRQ_FLG 0x0020
#define EP6_IRQ_FLG 0x0040
#define EP7_IRQ_FLG 0x0080
#define RESET_IRQ_FLG 0x0100
#define SOF_EOP_IRQ_FLG 0x0200
#define ID_IRQ_FLG 0x4000
#define VBUS_IRQ_FLG 0x8000
/* USB Host only registers */
/* ======================= */
/* Host n Control Register */
#define HOST_CTL_REG(x) ((x) ? 0xC0A0 : 0xC080)
#define PREAMBLE_EN 0x0080 /* Preamble enable */
#define SEQ_SEL 0x0040 /* Data Toggle Sequence Bit Select */
#define ISO_EN 0x0010 /* Isochronous enable */
#define ARM_EN 0x0001 /* Arm operation */
/* Host n Interrupt Enable Register */
#define HOST_IRQ_EN_REG(x) ((x) ? 0xC0AC : 0xC08C)
#define SOF_EOP_IRQ_EN 0x0200 /* SOF/EOP Interrupt Enable */
#define SOF_EOP_TMOUT_IRQ_EN 0x0800 /* SOF/EOP Timeout Interrupt Enable */
#define ID_IRQ_EN 0x4000 /* ID interrupt enable */
#define VBUS_IRQ_EN 0x8000 /* VBUS interrupt enable */
#define DONE_IRQ_EN 0x0001 /* Done Interrupt Enable */
/* USB status register */
#define HOST_STAT_MASK 0x02FD
#define PORT_CONNECT_CHANGE(x) ((x) ? 0x0020 : 0x0010)
#define PORT_SE0_STATUS(x) ((x) ? 0x0008 : 0x0004)
/* Host Frame Register */
#define HOST_FRAME_REG(x) ((x) ? 0xC0B6 : 0xC096)
#define HOST_FRAME_MASK 0x07FF
/* USB Peripheral only registers */
/* ============================= */
/* Device n Port Sel reg */
#define DEVICE_N_PORT_SEL(x) ((x) ? 0xC0A4 : 0xC084)
/* Device n Interrupt Enable Register */
#define DEVICE_N_IRQ_EN_REG(x) ((x) ? 0xC0AC : 0xC08C)
#define DEVICE_N_ENDPOINT_N_CTL_REG(dev, ep) ((dev) \
? (0x0280 + (ep << 4)) \
: (0x0200 + (ep << 4)))
#define DEVICE_N_ENDPOINT_N_STAT_REG(dev, ep) ((dev) \
? (0x0286 + (ep << 4)) \
: (0x0206 + (ep << 4)))
#define DEVICE_N_ADDRESS(dev) ((dev) ? (0xC0AE) : (0xC08E))
/* HPI registers */
/* ============= */
/* HPI Status register */
#define SOFEOP_FLG(x) (1 << ((x) ? 12 : 10))
#define SIEMSG_FLG(x) (1 << (4 + (x)))
#define RESET_FLG(x) ((x) ? 0x0200 : 0x0002)
#define DONE_FLG(x) (1 << (2 + (x)))
#define RESUME_FLG(x) (1 << (6 + (x)))
#define MBX_OUT_FLG 0x0001 /* Message out available */
#define MBX_IN_FLG 0x0100
#define ID_FLG 0x4000
#define VBUS_FLG 0x8000
/* Interrupt routing register */
#define HPI_IRQ_ROUTING_REG 0x0142
#define HPI_SWAP_ENABLE(x) ((x) ? 0x0100 : 0x0001)
#define RESET_TO_HPI_ENABLE(x) ((x) ? 0x0200 : 0x0002)
#define DONE_TO_HPI_ENABLE(x) ((x) ? 0x0008 : 0x0004)
#define RESUME_TO_HPI_ENABLE(x) ((x) ? 0x0080 : 0x0040)
#define SOFEOP_TO_HPI_EN(x) ((x) ? 0x2000 : 0x0800)
#define SOFEOP_TO_CPU_EN(x) ((x) ? 0x1000 : 0x0400)
#define ID_TO_HPI_ENABLE 0x4000
#define VBUS_TO_HPI_ENABLE 0x8000
/* SIE msg registers */
#define SIEMSG_REG(x) ((x) ? 0x0148 : 0x0144)
#define HUSB_TDListDone 0x1000
#define SUSB_EP0_MSG 0x0001
#define SUSB_EP1_MSG 0x0002
#define SUSB_EP2_MSG 0x0004
#define SUSB_EP3_MSG 0x0008
#define SUSB_EP4_MSG 0x0010
#define SUSB_EP5_MSG 0x0020
#define SUSB_EP6_MSG 0x0040
#define SUSB_EP7_MSG 0x0080
#define SUSB_RST_MSG 0x0100
#define SUSB_SOF_MSG 0x0200
#define SUSB_CFG_MSG 0x0400
#define SUSB_SUS_MSG 0x0800
#define SUSB_ID_MSG 0x4000
#define SUSB_VBUS_MSG 0x8000
/* BIOS interrupt routines */
#define SUSBx_RECEIVE_INT(x) ((x) ? 97 : 81)
#define SUSBx_SEND_INT(x) ((x) ? 96 : 80)
#define SUSBx_DEV_DESC_VEC(x) ((x) ? 0x00D4 : 0x00B4)
#define SUSBx_CONF_DESC_VEC(x) ((x) ? 0x00D6 : 0x00B6)
#define SUSBx_STRING_DESC_VEC(x) ((x) ? 0x00D8 : 0x00B8)
#define CY_HCD_BUF_ADDR 0x500 /* Base address for host */
#define SIE_TD_SIZE 0x200 /* size of the td list */
#define SIE_TD_BUF_SIZE 0x400 /* size of the data buffer */
#define SIE_TD_OFFSET(host) ((host) ? (SIE_TD_SIZE+SIE_TD_BUF_SIZE) : 0)
#define SIE_BUF_OFFSET(host) (SIE_TD_OFFSET(host) + SIE_TD_SIZE)
/* Base address of HCD + 2 x TD_SIZE + 2 x TD_BUF_SIZE */
#define CY_UDC_REQ_HEADER_BASE 0x1100
/* 8- byte request headers for IN/OUT transfers */
#define CY_UDC_REQ_HEADER_SIZE 8
#define CY_UDC_REQ_HEADER_ADDR(ep_num) (CY_UDC_REQ_HEADER_BASE + \
((ep_num) * CY_UDC_REQ_HEADER_SIZE))
#define CY_UDC_DESC_BASE_ADDRESS (CY_UDC_REQ_HEADER_ADDR(8))
#define CY_UDC_BIOS_REPLACE_BASE 0x1800
#define CY_UDC_REQ_BUFFER_BASE 0x2000
#define CY_UDC_REQ_BUFFER_SIZE 0x0400
#define CY_UDC_REQ_BUFFER_ADDR(ep_num) (CY_UDC_REQ_BUFFER_BASE + \
((ep_num) * CY_UDC_REQ_BUFFER_SIZE))
/* ---------------------------------------------------------------------
* Driver data structures
*/
struct c67x00_device;
/**
* struct c67x00_sie - Common data associated with a SIE
* @lock: lock to protect this struct and the associated chip registers
* @private_data: subdriver dependent data
* @irq: subdriver dependent irq handler, set NULL when not used
* @dev: link to common driver structure
* @sie_num: SIE number on chip, starting from 0
* @mode: SIE mode (host/peripheral/otg/not used)
*/
struct c67x00_sie {
/* Entries to be used by the subdrivers */
spinlock_t lock; /* protect this structure */
void *private_data;
void (*irq) (struct c67x00_sie *sie, u16 int_status, u16 msg);
/* Read only: */
struct c67x00_device *dev;
int sie_num;
int mode;
};
#define sie_dev(s) (&(s)->dev->pdev->dev)
/**
* struct c67x00_lcp
*/
struct c67x00_lcp {
/* Internal use only */
struct mutex mutex;
struct completion msg_received;
u16 last_msg;
};
/*
* struct c67x00_hpi
*/
struct c67x00_hpi {
void __iomem *base;
int regstep;
spinlock_t lock;
struct c67x00_lcp lcp;
};
#define C67X00_SIES 2
#define C67X00_PORTS 2
/**
* struct c67x00_device - Common data associated with a c67x00 instance
* @hpi: hpi addresses
* @sie: array of sie's on this chip
* @pdev: platform device of instance
* @pdata: configuration provided by the platform
*/
struct c67x00_device {
struct c67x00_hpi hpi;
struct c67x00_sie sie[C67X00_SIES];
struct platform_device *pdev;
struct c67x00_platform_data *pdata;
};
/* ---------------------------------------------------------------------
* Low level interface functions
*/
/* Host Port Interface (HPI) functions */
u16 c67x00_ll_hpi_status(struct c67x00_device *dev);
void c67x00_ll_hpi_reg_init(struct c67x00_device *dev);
void c67x00_ll_hpi_enable_sofeop(struct c67x00_sie *sie);
void c67x00_ll_hpi_disable_sofeop(struct c67x00_sie *sie);
/* General functions */
u16 c67x00_ll_fetch_siemsg(struct c67x00_device *dev, int sie_num);
u16 c67x00_ll_get_usb_ctl(struct c67x00_sie *sie);
void c67x00_ll_usb_clear_status(struct c67x00_sie *sie, u16 bits);
u16 c67x00_ll_usb_get_status(struct c67x00_sie *sie);
void c67x00_ll_write_mem_le16(struct c67x00_device *dev, u16 addr,
void *data, int len);
void c67x00_ll_read_mem_le16(struct c67x00_device *dev, u16 addr,
void *data, int len);
/* Host specific functions */
void c67x00_ll_set_husb_eot(struct c67x00_device *dev, u16 value);
void c67x00_ll_husb_reset(struct c67x00_sie *sie, int port);
void c67x00_ll_husb_set_current_td(struct c67x00_sie *sie, u16 addr);
u16 c67x00_ll_husb_get_current_td(struct c67x00_sie *sie);
u16 c67x00_ll_husb_get_frame(struct c67x00_sie *sie);
void c67x00_ll_husb_init_host_port(struct c67x00_sie *sie);
void c67x00_ll_husb_reset_port(struct c67x00_sie *sie, int port);
/* Called by c67x00_irq to handle lcp interrupts */
void c67x00_ll_irq(struct c67x00_device *dev, u16 int_status);
/* Setup and teardown */
void c67x00_ll_init(struct c67x00_device *dev);
void c67x00_ll_release(struct c67x00_device *dev);
int c67x00_ll_reset(struct c67x00_device *dev);
#endif /* _USB_C67X00_H */