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u-boot/drivers/isp116x.h
Rodolfo Giometti 822af351ad Support for the Philips ISP116x HCD (Host Controller Driver) 
Signed-off-by: Rodolfo Giometti <giometti@enneenne.com>
2007-04-03 14:27:18 +02:00

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/*
* ISP116x register declarations and HCD data structures
*
* Copyright (C) 2007 Rodolfo Giometti <giometti@linux.it>
* Copyright (C) 2007 Eurotech S.p.A. <info@eurotech.it>
* Copyright (C) 2005 Olav Kongas <ok@artecdesign.ee>
* Portions:
* Copyright (C) 2004 Lothar Wassmann
* Copyright (C) 2004 Psion Teklogix
* Copyright (C) 2004 David Brownell
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* 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.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*/
#ifdef DEBUG
#define DBG(fmt, args...) \
printf("isp116x: %s: " fmt "\n" , __FUNCTION__ , ## args)
#else
#define DBG(fmt, args...) do {} while (0)
#endif
#ifdef VERBOSE
# define VDBG DBG
#else
# define VDBG(fmt, args...) do {} while (0)
#endif
#define ERR(fmt, args...) \
printf("isp116x: %s: " fmt "\n" , __FUNCTION__ , ## args)
#define WARN(fmt, args...) \
printf("isp116x: %s: " fmt "\n" , __FUNCTION__ , ## args)
#define INFO(fmt, args...) \
printf("isp116x: " fmt "\n" , ## args)
/* ------------------------------------------------------------------------- */
/* us of 1ms frame */
#define MAX_LOAD_LIMIT 850
/* Full speed: max # of bytes to transfer for a single urb
at a time must be < 1024 && must be multiple of 64.
832 allows transfering 4kiB within 5 frames. */
#define MAX_TRANSFER_SIZE_FULLSPEED 832
/* Low speed: there is no reason to schedule in very big
chunks; often the requested long transfers are for
string descriptors containing short strings. */
#define MAX_TRANSFER_SIZE_LOWSPEED 64
/* Bytetime (us), a rough indication of how much time it
would take to transfer a byte of useful data over USB */
#define BYTE_TIME_FULLSPEED 1
#define BYTE_TIME_LOWSPEED 20
/* Buffer sizes */
#define ISP116x_BUF_SIZE 4096
#define ISP116x_ITL_BUFSIZE 0
#define ISP116x_ATL_BUFSIZE ((ISP116x_BUF_SIZE) - 2*(ISP116x_ITL_BUFSIZE))
#define ISP116x_WRITE_OFFSET 0x80
/* --- ISP116x registers/bits ---------------------------------------------- */
#define HCREVISION 0x00
#define HCCONTROL 0x01
#define HCCONTROL_HCFS (3 << 6) /* host controller
functional state */
#define HCCONTROL_USB_RESET (0 << 6)
#define HCCONTROL_USB_RESUME (1 << 6)
#define HCCONTROL_USB_OPER (2 << 6)
#define HCCONTROL_USB_SUSPEND (3 << 6)
#define HCCONTROL_RWC (1 << 9) /* remote wakeup connected */
#define HCCONTROL_RWE (1 << 10) /* remote wakeup enable */
#define HCCMDSTAT 0x02
#define HCCMDSTAT_HCR (1 << 0) /* host controller reset */
#define HCCMDSTAT_SOC (3 << 16) /* scheduling overrun count */
#define HCINTSTAT 0x03
#define HCINT_SO (1 << 0) /* scheduling overrun */
#define HCINT_WDH (1 << 1) /* writeback of done_head */
#define HCINT_SF (1 << 2) /* start frame */
#define HCINT_RD (1 << 3) /* resume detect */
#define HCINT_UE (1 << 4) /* unrecoverable error */
#define HCINT_FNO (1 << 5) /* frame number overflow */
#define HCINT_RHSC (1 << 6) /* root hub status change */
#define HCINT_OC (1 << 30) /* ownership change */
#define HCINT_MIE (1 << 31) /* master interrupt enable */
#define HCINTENB 0x04
#define HCINTDIS 0x05
#define HCFMINTVL 0x0d
#define HCFMREM 0x0e
#define HCFMNUM 0x0f
#define HCLSTHRESH 0x11
#define HCRHDESCA 0x12
#define RH_A_NDP (0x3 << 0) /* # downstream ports */
#define RH_A_PSM (1 << 8) /* power switching mode */
#define RH_A_NPS (1 << 9) /* no power switching */
#define RH_A_DT (1 << 10) /* device type (mbz) */
#define RH_A_OCPM (1 << 11) /* overcurrent protection
mode */
#define RH_A_NOCP (1 << 12) /* no overcurrent protection */
#define RH_A_POTPGT (0xff << 24) /* power on -> power good
time */
#define HCRHDESCB 0x13
#define RH_B_DR (0xffff << 0) /* device removable flags */
#define RH_B_PPCM (0xffff << 16) /* port power control mask */
#define HCRHSTATUS 0x14
#define RH_HS_LPS (1 << 0) /* local power status */
#define RH_HS_OCI (1 << 1) /* over current indicator */
#define RH_HS_DRWE (1 << 15) /* device remote wakeup
enable */
#define RH_HS_LPSC (1 << 16) /* local power status change */
#define RH_HS_OCIC (1 << 17) /* over current indicator
change */
#define RH_HS_CRWE (1 << 31) /* clear remote wakeup
enable */
#define HCRHPORT1 0x15
#define RH_PS_CCS (1 << 0) /* current connect status */
#define RH_PS_PES (1 << 1) /* port enable status */
#define RH_PS_PSS (1 << 2) /* port suspend status */
#define RH_PS_POCI (1 << 3) /* port over current
indicator */
#define RH_PS_PRS (1 << 4) /* port reset status */
#define RH_PS_PPS (1 << 8) /* port power status */
#define RH_PS_LSDA (1 << 9) /* low speed device attached */
#define RH_PS_CSC (1 << 16) /* connect status change */
#define RH_PS_PESC (1 << 17) /* port enable status change */
#define RH_PS_PSSC (1 << 18) /* port suspend status
change */
#define RH_PS_OCIC (1 << 19) /* over current indicator
change */
#define RH_PS_PRSC (1 << 20) /* port reset status change */
#define HCRHPORT_CLRMASK (0x1f << 16)
#define HCRHPORT2 0x16
#define HCHWCFG 0x20
#define HCHWCFG_15KRSEL (1 << 12)
#define HCHWCFG_CLKNOTSTOP (1 << 11)
#define HCHWCFG_ANALOG_OC (1 << 10)
#define HCHWCFG_DACK_MODE (1 << 8)
#define HCHWCFG_EOT_POL (1 << 7)
#define HCHWCFG_DACK_POL (1 << 6)
#define HCHWCFG_DREQ_POL (1 << 5)
#define HCHWCFG_DBWIDTH_MASK (0x03 << 3)
#define HCHWCFG_DBWIDTH(n) (((n) << 3) & HCHWCFG_DBWIDTH_MASK)
#define HCHWCFG_INT_POL (1 << 2)
#define HCHWCFG_INT_TRIGGER (1 << 1)
#define HCHWCFG_INT_ENABLE (1 << 0)
#define HCDMACFG 0x21
#define HCDMACFG_BURST_LEN_MASK (0x03 << 5)
#define HCDMACFG_BURST_LEN(n) (((n) << 5) & HCDMACFG_BURST_LEN_MASK)
#define HCDMACFG_BURST_LEN_1 HCDMACFG_BURST_LEN(0)
#define HCDMACFG_BURST_LEN_4 HCDMACFG_BURST_LEN(1)
#define HCDMACFG_BURST_LEN_8 HCDMACFG_BURST_LEN(2)
#define HCDMACFG_DMA_ENABLE (1 << 4)
#define HCDMACFG_BUF_TYPE_MASK (0x07 << 1)
#define HCDMACFG_CTR_SEL (1 << 2)
#define HCDMACFG_ITLATL_SEL (1 << 1)
#define HCDMACFG_DMA_RW_SELECT (1 << 0)
#define HCXFERCTR 0x22
#define HCuPINT 0x24
#define HCuPINT_SOF (1 << 0)
#define HCuPINT_ATL (1 << 1)
#define HCuPINT_AIIEOT (1 << 2)
#define HCuPINT_OPR (1 << 4)
#define HCuPINT_SUSP (1 << 5)
#define HCuPINT_CLKRDY (1 << 6)
#define HCuPINTENB 0x25
#define HCCHIPID 0x27
#define HCCHIPID_MASK 0xff00
#define HCCHIPID_MAGIC 0x6100
#define HCSCRATCH 0x28
#define HCSWRES 0x29
#define HCSWRES_MAGIC 0x00f6
#define HCITLBUFLEN 0x2a
#define HCATLBUFLEN 0x2b
#define HCBUFSTAT 0x2c
#define HCBUFSTAT_ITL0_FULL (1 << 0)
#define HCBUFSTAT_ITL1_FULL (1 << 1)
#define HCBUFSTAT_ATL_FULL (1 << 2)
#define HCBUFSTAT_ITL0_DONE (1 << 3)
#define HCBUFSTAT_ITL1_DONE (1 << 4)
#define HCBUFSTAT_ATL_DONE (1 << 5)
#define HCRDITL0LEN 0x2d
#define HCRDITL1LEN 0x2e
#define HCITLPORT 0x40
#define HCATLPORT 0x41
/* PTD accessor macros. */
#define PTD_GET_COUNT(p) (((p)->count & PTD_COUNT_MSK) >> 0)
#define PTD_COUNT(v) (((v) << 0) & PTD_COUNT_MSK)
#define PTD_GET_TOGGLE(p) (((p)->count & PTD_TOGGLE_MSK) >> 10)
#define PTD_TOGGLE(v) (((v) << 10) & PTD_TOGGLE_MSK)
#define PTD_GET_ACTIVE(p) (((p)->count & PTD_ACTIVE_MSK) >> 11)
#define PTD_ACTIVE(v) (((v) << 11) & PTD_ACTIVE_MSK)
#define PTD_GET_CC(p) (((p)->count & PTD_CC_MSK) >> 12)
#define PTD_CC(v) (((v) << 12) & PTD_CC_MSK)
#define PTD_GET_MPS(p) (((p)->mps & PTD_MPS_MSK) >> 0)
#define PTD_MPS(v) (((v) << 0) & PTD_MPS_MSK)
#define PTD_GET_SPD(p) (((p)->mps & PTD_SPD_MSK) >> 10)
#define PTD_SPD(v) (((v) << 10) & PTD_SPD_MSK)
#define PTD_GET_LAST(p) (((p)->mps & PTD_LAST_MSK) >> 11)
#define PTD_LAST(v) (((v) << 11) & PTD_LAST_MSK)
#define PTD_GET_EP(p) (((p)->mps & PTD_EP_MSK) >> 12)
#define PTD_EP(v) (((v) << 12) & PTD_EP_MSK)
#define PTD_GET_LEN(p) (((p)->len & PTD_LEN_MSK) >> 0)
#define PTD_LEN(v) (((v) << 0) & PTD_LEN_MSK)
#define PTD_GET_DIR(p) (((p)->len & PTD_DIR_MSK) >> 10)
#define PTD_DIR(v) (((v) << 10) & PTD_DIR_MSK)
#define PTD_GET_B5_5(p) (((p)->len & PTD_B5_5_MSK) >> 13)
#define PTD_B5_5(v) (((v) << 13) & PTD_B5_5_MSK)
#define PTD_GET_FA(p) (((p)->faddr & PTD_FA_MSK) >> 0)
#define PTD_FA(v) (((v) << 0) & PTD_FA_MSK)
#define PTD_GET_FMT(p) (((p)->faddr & PTD_FMT_MSK) >> 7)
#define PTD_FMT(v) (((v) << 7) & PTD_FMT_MSK)
/* Hardware transfer status codes -- CC from ptd->count */
#define TD_CC_NOERROR 0x00
#define TD_CC_CRC 0x01
#define TD_CC_BITSTUFFING 0x02
#define TD_CC_DATATOGGLEM 0x03
#define TD_CC_STALL 0x04
#define TD_DEVNOTRESP 0x05
#define TD_PIDCHECKFAIL 0x06
#define TD_UNEXPECTEDPID 0x07
#define TD_DATAOVERRUN 0x08
#define TD_DATAUNDERRUN 0x09
/* 0x0A, 0x0B reserved for hardware */
#define TD_BUFFEROVERRUN 0x0C
#define TD_BUFFERUNDERRUN 0x0D
/* 0x0E, 0x0F reserved for HCD */
#define TD_NOTACCESSED 0x0F
/* ------------------------------------------------------------------------- */
#define LOG2_PERIODIC_SIZE 5 /* arbitrary; this matches OHCI */
#define PERIODIC_SIZE (1 << LOG2_PERIODIC_SIZE)
/* Philips transfer descriptor */
struct ptd {
u16 count;
#define PTD_COUNT_MSK (0x3ff << 0)
#define PTD_TOGGLE_MSK (1 << 10)
#define PTD_ACTIVE_MSK (1 << 11)
#define PTD_CC_MSK (0xf << 12)
u16 mps;
#define PTD_MPS_MSK (0x3ff << 0)
#define PTD_SPD_MSK (1 << 10)
#define PTD_LAST_MSK (1 << 11)
#define PTD_EP_MSK (0xf << 12)
u16 len;
#define PTD_LEN_MSK (0x3ff << 0)
#define PTD_DIR_MSK (3 << 10)
#define PTD_DIR_SETUP (0)
#define PTD_DIR_OUT (1)
#define PTD_DIR_IN (2)
#define PTD_B5_5_MSK (1 << 13)
u16 faddr;
#define PTD_FA_MSK (0x7f << 0)
#define PTD_FMT_MSK (1 << 7)
} __attribute__ ((packed, aligned(2)));
struct isp116x_ep {
struct usb_device *udev;
struct ptd ptd;
u8 maxpacket;
u8 epnum;
u8 nextpid;
u16 length; /* of current packet */
unsigned char *data; /* to databuf */
u16 error_count;
};
/* URB struct */
#define N_URB_TD 48
#define URB_DEL 1
typedef struct {
struct isp116x_ep *ed;
void *transfer_buffer; /* (in) associated data buffer */
int actual_length; /* (return) actual transfer length */
unsigned long pipe; /* (in) pipe information */
#if 0
int state;
#endif
} urb_priv_t;
struct isp116x_platform_data {
/* Enable internal resistors on downstream ports */
unsigned sel15Kres:1;
/* On-chip overcurrent detection */
unsigned oc_enable:1;
/* Enable wakeup by devices on usb bus (e.g. wakeup
by attachment/detachment or by device activity
such as moving a mouse). When chosen, this option
prevents stopping internal clock, increasing
thereby power consumption in suspended state. */
unsigned remote_wakeup_enable:1;
};
struct isp116x {
u16 *addr_reg;
u16 *data_reg;
struct isp116x_platform_data *board;
struct dentry *dentry;
unsigned long stat1, stat2, stat4, stat8, stat16;
/* Status flags */
unsigned disabled:1;
unsigned sleeping:1;
/* Root hub registers */
u32 rhdesca;
u32 rhdescb;
u32 rhstatus;
u32 rhport[2];
/* Schedule for the current frame */
struct isp116x_ep *atl_active;
int atl_buflen;
int atl_bufshrt;
int atl_last_dir;
int atl_finishing;
};
/* ------------------------------------------------- */
/* Inter-io delay (ns). The chip is picky about access timings; it
* expects at least:
* 150ns delay between consecutive accesses to DATA_REG,
* 300ns delay between access to ADDR_REG and DATA_REG
* OE, WE MUST NOT be changed during these intervals
*/
#if defined(UDELAY)
#define isp116x_delay(h,d) udelay(d)
#else
#define isp116x_delay(h,d) do {} while (0)
#endif
static inline void isp116x_write_addr(struct isp116x *isp116x, unsigned reg)
{
writew(reg & 0xff, isp116x->addr_reg);
isp116x_delay(isp116x, UDELAY);
}
static inline void isp116x_write_data16(struct isp116x *isp116x, u16 val)
{
writew(val, isp116x->data_reg);
isp116x_delay(isp116x, UDELAY);
}
static inline void isp116x_raw_write_data16(struct isp116x *isp116x, u16 val)
{
__raw_writew(val, isp116x->data_reg);
isp116x_delay(isp116x, UDELAY);
}
static inline u16 isp116x_read_data16(struct isp116x *isp116x)
{
u16 val;
val = readw(isp116x->data_reg);
isp116x_delay(isp116x, UDELAY);
return val;
}
static inline u16 isp116x_raw_read_data16(struct isp116x *isp116x)
{
u16 val;
val = __raw_readw(isp116x->data_reg);
isp116x_delay(isp116x, UDELAY);
return val;
}
static inline void isp116x_write_data32(struct isp116x *isp116x, u32 val)
{
writew(val & 0xffff, isp116x->data_reg);
isp116x_delay(isp116x, UDELAY);
writew(val >> 16, isp116x->data_reg);
isp116x_delay(isp116x, UDELAY);
}
static inline u32 isp116x_read_data32(struct isp116x *isp116x)
{
u32 val;
val = (u32) readw(isp116x->data_reg);
isp116x_delay(isp116x, UDELAY);
val |= ((u32) readw(isp116x->data_reg)) << 16;
isp116x_delay(isp116x, UDELAY);
return val;
}
/* Let's keep register access functions out of line. Hint:
we wait at least 150 ns at every access.
*/
static u16 isp116x_read_reg16(struct isp116x *isp116x, unsigned reg)
{
isp116x_write_addr(isp116x, reg);
return isp116x_read_data16(isp116x);
}
static u32 isp116x_read_reg32(struct isp116x *isp116x, unsigned reg)
{
isp116x_write_addr(isp116x, reg);
return isp116x_read_data32(isp116x);
}
static void isp116x_write_reg16(struct isp116x *isp116x, unsigned reg,
unsigned val)
{
isp116x_write_addr(isp116x, reg | ISP116x_WRITE_OFFSET);
isp116x_write_data16(isp116x, (u16) (val & 0xffff));
}
static void isp116x_write_reg32(struct isp116x *isp116x, unsigned reg,
unsigned val)
{
isp116x_write_addr(isp116x, reg | ISP116x_WRITE_OFFSET);
isp116x_write_data32(isp116x, (u32) val);
}
/* --- USB HUB constants (not OHCI-specific; see hub.h) -------------------- */
/* destination of request */
#define RH_INTERFACE 0x01
#define RH_ENDPOINT 0x02
#define RH_OTHER 0x03
#define RH_CLASS 0x20
#define RH_VENDOR 0x40
/* Requests: bRequest << 8 | bmRequestType */
#define RH_GET_STATUS 0x0080
#define RH_CLEAR_FEATURE 0x0100
#define RH_SET_FEATURE 0x0300
#define RH_SET_ADDRESS 0x0500
#define RH_GET_DESCRIPTOR 0x0680
#define RH_SET_DESCRIPTOR 0x0700
#define RH_GET_CONFIGURATION 0x0880
#define RH_SET_CONFIGURATION 0x0900
#define RH_GET_STATE 0x0280
#define RH_GET_INTERFACE 0x0A80
#define RH_SET_INTERFACE 0x0B00
#define RH_SYNC_FRAME 0x0C80
/* Our Vendor Specific Request */
#define RH_SET_EP 0x2000
/* Hub port features */
#define RH_PORT_CONNECTION 0x00
#define RH_PORT_ENABLE 0x01
#define RH_PORT_SUSPEND 0x02
#define RH_PORT_OVER_CURRENT 0x03
#define RH_PORT_RESET 0x04
#define RH_PORT_POWER 0x08
#define RH_PORT_LOW_SPEED 0x09
#define RH_C_PORT_CONNECTION 0x10
#define RH_C_PORT_ENABLE 0x11
#define RH_C_PORT_SUSPEND 0x12
#define RH_C_PORT_OVER_CURRENT 0x13
#define RH_C_PORT_RESET 0x14
/* Hub features */
#define RH_C_HUB_LOCAL_POWER 0x00
#define RH_C_HUB_OVER_CURRENT 0x01
#define RH_DEVICE_REMOTE_WAKEUP 0x00
#define RH_ENDPOINT_STALL 0x01
#define RH_ACK 0x01
#define RH_REQ_ERR -1
#define RH_NACK 0x00
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