251 lines
6.3 KiB
C
251 lines
6.3 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
|
|
/*
|
|
* SL811HS register declarations and HCD data structures
|
|
*
|
|
* Copyright (C) 2004 Psion Teklogix
|
|
* Copyright (C) 2004 David Brownell
|
|
* Copyright (C) 2001 Cypress Semiconductor Inc.
|
|
*/
|
|
|
|
/*
|
|
* SL811HS has transfer registers, and control registers. In host/master
|
|
* mode one set of registers is used; in peripheral/slave mode, another.
|
|
* - SL11H only has some "A" transfer registers from 0x00-0x04
|
|
* - SL811HS also has "B" registers from 0x08-0x0c
|
|
* - SL811S (or HS in slave mode) has four A+B sets, at 00, 10, 20, 30
|
|
*/
|
|
|
|
#define SL811_EP_A(base) ((base) + 0)
|
|
#define SL811_EP_B(base) ((base) + 8)
|
|
|
|
#define SL811_HOST_BUF 0x00
|
|
#define SL811_PERIPH_EP0 0x00
|
|
#define SL811_PERIPH_EP1 0x10
|
|
#define SL811_PERIPH_EP2 0x20
|
|
#define SL811_PERIPH_EP3 0x30
|
|
|
|
|
|
/* TRANSFER REGISTERS: host and peripheral sides are similar
|
|
* except for the control models (master vs slave).
|
|
*/
|
|
#define SL11H_HOSTCTLREG 0
|
|
# define SL11H_HCTLMASK_ARM 0x01
|
|
# define SL11H_HCTLMASK_ENABLE 0x02
|
|
# define SL11H_HCTLMASK_IN 0x00
|
|
# define SL11H_HCTLMASK_OUT 0x04
|
|
# define SL11H_HCTLMASK_ISOCH 0x10
|
|
# define SL11H_HCTLMASK_AFTERSOF 0x20
|
|
# define SL11H_HCTLMASK_TOGGLE 0x40
|
|
# define SL11H_HCTLMASK_PREAMBLE 0x80
|
|
#define SL11H_BUFADDRREG 1
|
|
#define SL11H_BUFLNTHREG 2
|
|
#define SL11H_PKTSTATREG 3 /* read */
|
|
# define SL11H_STATMASK_ACK 0x01
|
|
# define SL11H_STATMASK_ERROR 0x02
|
|
# define SL11H_STATMASK_TMOUT 0x04
|
|
# define SL11H_STATMASK_SEQ 0x08
|
|
# define SL11H_STATMASK_SETUP 0x10
|
|
# define SL11H_STATMASK_OVF 0x20
|
|
# define SL11H_STATMASK_NAK 0x40
|
|
# define SL11H_STATMASK_STALL 0x80
|
|
#define SL11H_PIDEPREG 3 /* write */
|
|
# define SL_SETUP 0xd0
|
|
# define SL_IN 0x90
|
|
# define SL_OUT 0x10
|
|
# define SL_SOF 0x50
|
|
# define SL_PREAMBLE 0xc0
|
|
# define SL_NAK 0xa0
|
|
# define SL_STALL 0xe0
|
|
# define SL_DATA0 0x30
|
|
# define SL_DATA1 0xb0
|
|
#define SL11H_XFERCNTREG 4 /* read */
|
|
#define SL11H_DEVADDRREG 4 /* write */
|
|
|
|
|
|
/* CONTROL REGISTERS: host and peripheral are very different.
|
|
*/
|
|
#define SL11H_CTLREG1 5
|
|
# define SL11H_CTL1MASK_SOF_ENA 0x01
|
|
# define SL11H_CTL1MASK_FORCE 0x18
|
|
# define SL11H_CTL1MASK_NORMAL 0x00
|
|
# define SL11H_CTL1MASK_SE0 0x08 /* reset */
|
|
# define SL11H_CTL1MASK_J 0x10
|
|
# define SL11H_CTL1MASK_K 0x18 /* resume */
|
|
# define SL11H_CTL1MASK_LSPD 0x20
|
|
# define SL11H_CTL1MASK_SUSPEND 0x40
|
|
#define SL11H_IRQ_ENABLE 6
|
|
# define SL11H_INTMASK_DONE_A 0x01
|
|
# define SL11H_INTMASK_DONE_B 0x02
|
|
# define SL11H_INTMASK_SOFINTR 0x10
|
|
# define SL11H_INTMASK_INSRMV 0x20 /* to/from SE0 */
|
|
# define SL11H_INTMASK_RD 0x40
|
|
# define SL11H_INTMASK_DP 0x80 /* only in INTSTATREG */
|
|
#define SL11S_ADDRESS 7
|
|
|
|
/* 0x08-0x0c are for the B buffer (not in SL11) */
|
|
|
|
#define SL11H_IRQ_STATUS 0x0D /* write to ack */
|
|
#define SL11H_HWREVREG 0x0E /* read */
|
|
# define SL11H_HWRMASK_HWREV 0xF0
|
|
#define SL11H_SOFLOWREG 0x0E /* write */
|
|
#define SL11H_SOFTMRREG 0x0F /* read */
|
|
|
|
/* a write to this register enables SL811HS features.
|
|
* HOST flag presumably overrides the chip input signal?
|
|
*/
|
|
#define SL811HS_CTLREG2 0x0F
|
|
# define SL811HS_CTL2MASK_SOF_MASK 0x3F
|
|
# define SL811HS_CTL2MASK_DSWAP 0x40
|
|
# define SL811HS_CTL2MASK_HOST 0x80
|
|
|
|
#define SL811HS_CTL2_INIT (SL811HS_CTL2MASK_HOST | 0x2e)
|
|
|
|
|
|
/* DATA BUFFERS: registers from 0x10..0xff are for data buffers;
|
|
* that's 240 bytes, which we'll split evenly between A and B sides.
|
|
* Only ISO can use more than 64 bytes per packet.
|
|
* (The SL11S has 0x40..0xff for buffers.)
|
|
*/
|
|
#define H_MAXPACKET 120 /* bytes in A or B fifos */
|
|
|
|
#define SL11H_DATA_START 0x10
|
|
#define SL811HS_PACKET_BUF(is_a) ((is_a) \
|
|
? SL11H_DATA_START \
|
|
: (SL11H_DATA_START + H_MAXPACKET))
|
|
|
|
/*-------------------------------------------------------------------------*/
|
|
|
|
#define LOG2_PERIODIC_SIZE 5 /* arbitrary; this matches OHCI */
|
|
#define PERIODIC_SIZE (1 << LOG2_PERIODIC_SIZE)
|
|
|
|
struct sl811 {
|
|
spinlock_t lock;
|
|
void __iomem *addr_reg;
|
|
void __iomem *data_reg;
|
|
struct sl811_platform_data *board;
|
|
struct dentry *debug_file;
|
|
|
|
unsigned long stat_insrmv;
|
|
unsigned long stat_wake;
|
|
unsigned long stat_sof;
|
|
unsigned long stat_a;
|
|
unsigned long stat_b;
|
|
unsigned long stat_lost;
|
|
unsigned long stat_overrun;
|
|
|
|
/* sw model */
|
|
struct timer_list timer;
|
|
struct sl811h_ep *next_periodic;
|
|
struct sl811h_ep *next_async;
|
|
|
|
struct sl811h_ep *active_a;
|
|
unsigned long jiffies_a;
|
|
struct sl811h_ep *active_b;
|
|
unsigned long jiffies_b;
|
|
|
|
u32 port1;
|
|
u8 ctrl1, ctrl2, irq_enable;
|
|
u16 frame;
|
|
|
|
/* async schedule: control, bulk */
|
|
struct list_head async;
|
|
|
|
/* periodic schedule: interrupt, iso */
|
|
u16 load[PERIODIC_SIZE];
|
|
struct sl811h_ep *periodic[PERIODIC_SIZE];
|
|
unsigned periodic_count;
|
|
};
|
|
|
|
static inline struct sl811 *hcd_to_sl811(struct usb_hcd *hcd)
|
|
{
|
|
return (struct sl811 *) (hcd->hcd_priv);
|
|
}
|
|
|
|
static inline struct usb_hcd *sl811_to_hcd(struct sl811 *sl811)
|
|
{
|
|
return container_of((void *) sl811, struct usb_hcd, hcd_priv);
|
|
}
|
|
|
|
struct sl811h_ep {
|
|
struct usb_host_endpoint *hep;
|
|
struct usb_device *udev;
|
|
|
|
u8 defctrl;
|
|
u8 maxpacket;
|
|
u8 epnum;
|
|
u8 nextpid;
|
|
|
|
u16 error_count;
|
|
u16 nak_count;
|
|
u16 length; /* of current packet */
|
|
|
|
/* periodic schedule */
|
|
u16 period;
|
|
u16 branch;
|
|
u16 load;
|
|
struct sl811h_ep *next;
|
|
|
|
/* async schedule */
|
|
struct list_head schedule;
|
|
};
|
|
|
|
/*-------------------------------------------------------------------------*/
|
|
|
|
/* These register utilities should work for the SL811S register API too
|
|
* NOTE: caller must hold sl811->lock.
|
|
*/
|
|
|
|
static inline u8 sl811_read(struct sl811 *sl811, int reg)
|
|
{
|
|
writeb(reg, sl811->addr_reg);
|
|
return readb(sl811->data_reg);
|
|
}
|
|
|
|
static inline void sl811_write(struct sl811 *sl811, int reg, u8 val)
|
|
{
|
|
writeb(reg, sl811->addr_reg);
|
|
writeb(val, sl811->data_reg);
|
|
}
|
|
|
|
static inline void
|
|
sl811_write_buf(struct sl811 *sl811, int addr, const void *buf, size_t count)
|
|
{
|
|
const u8 *data;
|
|
void __iomem *data_reg;
|
|
|
|
if (!count)
|
|
return;
|
|
writeb(addr, sl811->addr_reg);
|
|
|
|
data = buf;
|
|
data_reg = sl811->data_reg;
|
|
do {
|
|
writeb(*data++, data_reg);
|
|
} while (--count);
|
|
}
|
|
|
|
static inline void
|
|
sl811_read_buf(struct sl811 *sl811, int addr, void *buf, size_t count)
|
|
{
|
|
u8 *data;
|
|
void __iomem *data_reg;
|
|
|
|
if (!count)
|
|
return;
|
|
writeb(addr, sl811->addr_reg);
|
|
|
|
data = buf;
|
|
data_reg = sl811->data_reg;
|
|
do {
|
|
*data++ = readb(data_reg);
|
|
} while (--count);
|
|
}
|
|
|
|
/*-------------------------------------------------------------------------*/
|
|
|
|
#ifdef PACKET_TRACE
|
|
# define PACKET pr_debug("sl811: "stuff)
|
|
#else
|
|
# define PACKET(stuff...) do{}while(0)
|
|
#endif
|