/* * 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 proc_dir_entry *pde; 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 DEBUG #define DBG(stuff...) printk(KERN_DEBUG "sl811: " stuff) #else #define DBG(stuff...) do{}while(0) #endif #ifdef VERBOSE # define VDBG DBG #else # define VDBG(stuff...) do{}while(0) #endif #ifdef PACKET_TRACE # define PACKET VDBG #else # define PACKET(stuff...) do{}while(0) #endif #define ERR(stuff...) printk(KERN_ERR "sl811: " stuff) #define WARNING(stuff...) printk(KERN_WARNING "sl811: " stuff) #define INFO(stuff...) printk(KERN_INFO "sl811: " stuff)