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linux/drivers/usb/host/isp1362.h
Arnd Bergmann da2827a298 usb: isp1362: remove blackfin arch glue 
The blackfin architecture is getting removed, and this is the last
remaining architecture specific setting, so the various hacks
can be removed now.

From all I can tell, there are no remaining in-tree users of the
driver, but it could be used by out-of-tree platform ports.
I've marked the driver as 'depends on COMPILE_TEST', short of
removing it outright.

It was originally written for some ARM PXA machines using the same
chip, but that platform never really worked and the code has been
removed a long time ago.

Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Acked-by: Aaron Wu <aaron.wu@analog.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2018-03-26 15:57:14 +02:00

970 lines
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/* SPDX-License-Identifier: GPL-2.0 */
/*
* ISP1362 HCD (Host Controller Driver) for USB.
*
* COPYRIGHT (C) by L. Wassmann <LW@KARO-electronics.de>
*/
/* ------------------------------------------------------------------------- */
#define MAX_ROOT_PORTS 2
#define USE_32BIT 0
/* These options are mutually eclusive */
#define USE_PLATFORM_DELAY 0
#define USE_NDELAY 0
#define DUMMY_DELAY_ACCESS do {} while (0)
/* ------------------------------------------------------------------------- */
#define USB_RESET_WIDTH 50
#define MAX_XFER_SIZE 1023
/* Buffer sizes */
#define ISP1362_BUF_SIZE 4096
#define ISP1362_ISTL_BUFSIZE 512
#define ISP1362_INTL_BLKSIZE 64
#define ISP1362_INTL_BUFFERS 16
#define ISP1362_ATL_BLKSIZE 64
#define ISP1362_REG_WRITE_OFFSET 0x80
#define REG_WIDTH_16 0x000
#define REG_WIDTH_32 0x100
#define REG_WIDTH_MASK 0x100
#define REG_NO_MASK 0x0ff
#ifdef ISP1362_DEBUG
typedef const unsigned int isp1362_reg_t;
#define REG_ACCESS_R 0x200
#define REG_ACCESS_W 0x400
#define REG_ACCESS_RW 0x600
#define REG_ACCESS_MASK 0x600
#define ISP1362_REG_NO(r) ((r) & REG_NO_MASK)
#define ISP1362_REG(name, addr, width, rw) \
static isp1362_reg_t ISP1362_REG_##name = ((addr) | (width) | (rw))
#define REG_ACCESS_TEST(r) BUG_ON(((r) & ISP1362_REG_WRITE_OFFSET) && !((r) & REG_ACCESS_W))
#define REG_WIDTH_TEST(r, w) BUG_ON(((r) & REG_WIDTH_MASK) != (w))
#else
typedef const unsigned char isp1362_reg_t;
#define ISP1362_REG_NO(r) (r)
#define ISP1362_REG(name, addr, width, rw) \
static isp1362_reg_t ISP1362_REG_##name = addr
#define REG_ACCESS_TEST(r) do {} while (0)
#define REG_WIDTH_TEST(r, w) do {} while (0)
#endif
/* OHCI compatible registers */
/*
* Note: Some of the ISP1362 'OHCI' registers implement only
* a subset of the bits defined in the OHCI spec.
*
* Bitmasks for the individual bits of these registers are defined in "ohci.h"
*/
ISP1362_REG(HCREVISION, 0x00, REG_WIDTH_32, REG_ACCESS_R);
ISP1362_REG(HCCONTROL, 0x01, REG_WIDTH_32, REG_ACCESS_RW);
ISP1362_REG(HCCMDSTAT, 0x02, REG_WIDTH_32, REG_ACCESS_RW);
ISP1362_REG(HCINTSTAT, 0x03, REG_WIDTH_32, REG_ACCESS_RW);
ISP1362_REG(HCINTENB, 0x04, REG_WIDTH_32, REG_ACCESS_RW);
ISP1362_REG(HCINTDIS, 0x05, REG_WIDTH_32, REG_ACCESS_RW);
ISP1362_REG(HCFMINTVL, 0x0d, REG_WIDTH_32, REG_ACCESS_RW);
ISP1362_REG(HCFMREM, 0x0e, REG_WIDTH_32, REG_ACCESS_RW);
ISP1362_REG(HCFMNUM, 0x0f, REG_WIDTH_32, REG_ACCESS_RW);
ISP1362_REG(HCLSTHRESH, 0x11, REG_WIDTH_32, REG_ACCESS_RW);
ISP1362_REG(HCRHDESCA, 0x12, REG_WIDTH_32, REG_ACCESS_RW);
ISP1362_REG(HCRHDESCB, 0x13, REG_WIDTH_32, REG_ACCESS_RW);
ISP1362_REG(HCRHSTATUS, 0x14, REG_WIDTH_32, REG_ACCESS_RW);
ISP1362_REG(HCRHPORT1, 0x15, REG_WIDTH_32, REG_ACCESS_RW);
ISP1362_REG(HCRHPORT2, 0x16, REG_WIDTH_32, REG_ACCESS_RW);
/* Philips ISP1362 specific registers */
ISP1362_REG(HCHWCFG, 0x20, REG_WIDTH_16, REG_ACCESS_RW);
#define HCHWCFG_DISABLE_SUSPEND (1 << 15)
#define HCHWCFG_GLOBAL_PWRDOWN (1 << 14)
#define HCHWCFG_PULLDOWN_DS2 (1 << 13)
#define HCHWCFG_PULLDOWN_DS1 (1 << 12)
#define HCHWCFG_CLKNOTSTOP (1 << 11)
#define HCHWCFG_ANALOG_OC (1 << 10)
#define HCHWCFG_ONEINT (1 << 9)
#define HCHWCFG_DACK_MODE (1 << 8)
#define HCHWCFG_ONEDMA (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)
ISP1362_REG(HCDMACFG, 0x21, REG_WIDTH_16, REG_ACCESS_RW);
#define HCDMACFG_CTR_ENABLE (1 << 7)
#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_BUF_TYPE(n) (((n) << 1) & HCDMACFG_BUF_TYPE_MASK)
#define HCDMACFG_BUF_ISTL0 HCDMACFG_BUF_TYPE(0)
#define HCDMACFG_BUF_ISTL1 HCDMACFG_BUF_TYPE(1)
#define HCDMACFG_BUF_INTL HCDMACFG_BUF_TYPE(2)
#define HCDMACFG_BUF_ATL HCDMACFG_BUF_TYPE(3)
#define HCDMACFG_BUF_DIRECT HCDMACFG_BUF_TYPE(4)
#define HCDMACFG_DMA_RW_SELECT (1 << 0)
ISP1362_REG(HCXFERCTR, 0x22, REG_WIDTH_16, REG_ACCESS_RW);
ISP1362_REG(HCuPINT, 0x24, REG_WIDTH_16, REG_ACCESS_RW);
#define HCuPINT_SOF (1 << 0)
#define HCuPINT_ISTL0 (1 << 1)
#define HCuPINT_ISTL1 (1 << 2)
#define HCuPINT_EOT (1 << 3)
#define HCuPINT_OPR (1 << 4)
#define HCuPINT_SUSP (1 << 5)
#define HCuPINT_CLKRDY (1 << 6)
#define HCuPINT_INTL (1 << 7)
#define HCuPINT_ATL (1 << 8)
#define HCuPINT_OTG (1 << 9)
ISP1362_REG(HCuPINTENB, 0x25, REG_WIDTH_16, REG_ACCESS_RW);
/* same bit definitions apply as for HCuPINT */
ISP1362_REG(HCCHIPID, 0x27, REG_WIDTH_16, REG_ACCESS_R);
#define HCCHIPID_MASK 0xff00
#define HCCHIPID_MAGIC 0x3600
ISP1362_REG(HCSCRATCH, 0x28, REG_WIDTH_16, REG_ACCESS_RW);
ISP1362_REG(HCSWRES, 0x29, REG_WIDTH_16, REG_ACCESS_W);
#define HCSWRES_MAGIC 0x00f6
ISP1362_REG(HCBUFSTAT, 0x2c, REG_WIDTH_16, REG_ACCESS_RW);
#define HCBUFSTAT_ISTL0_FULL (1 << 0)
#define HCBUFSTAT_ISTL1_FULL (1 << 1)
#define HCBUFSTAT_INTL_ACTIVE (1 << 2)
#define HCBUFSTAT_ATL_ACTIVE (1 << 3)
#define HCBUFSTAT_RESET_HWPP (1 << 4)
#define HCBUFSTAT_ISTL0_ACTIVE (1 << 5)
#define HCBUFSTAT_ISTL1_ACTIVE (1 << 6)
#define HCBUFSTAT_ISTL0_DONE (1 << 8)
#define HCBUFSTAT_ISTL1_DONE (1 << 9)
#define HCBUFSTAT_PAIRED_PTDPP (1 << 10)
ISP1362_REG(HCDIRADDR, 0x32, REG_WIDTH_32, REG_ACCESS_RW);
#define HCDIRADDR_ADDR_MASK 0x0000ffff
#define HCDIRADDR_ADDR(n) (((n) << 0) & HCDIRADDR_ADDR_MASK)
#define HCDIRADDR_COUNT_MASK 0xffff0000
#define HCDIRADDR_COUNT(n) (((n) << 16) & HCDIRADDR_COUNT_MASK)
ISP1362_REG(HCDIRDATA, 0x45, REG_WIDTH_16, REG_ACCESS_RW);
ISP1362_REG(HCISTLBUFSZ, 0x30, REG_WIDTH_16, REG_ACCESS_RW);
ISP1362_REG(HCISTL0PORT, 0x40, REG_WIDTH_16, REG_ACCESS_RW);
ISP1362_REG(HCISTL1PORT, 0x42, REG_WIDTH_16, REG_ACCESS_RW);
ISP1362_REG(HCISTLRATE, 0x47, REG_WIDTH_16, REG_ACCESS_RW);
ISP1362_REG(HCINTLBUFSZ, 0x33, REG_WIDTH_16, REG_ACCESS_RW);
ISP1362_REG(HCINTLPORT, 0x43, REG_WIDTH_16, REG_ACCESS_RW);
ISP1362_REG(HCINTLBLKSZ, 0x53, REG_WIDTH_16, REG_ACCESS_RW);
ISP1362_REG(HCINTLDONE, 0x17, REG_WIDTH_32, REG_ACCESS_R);
ISP1362_REG(HCINTLSKIP, 0x18, REG_WIDTH_32, REG_ACCESS_RW);
ISP1362_REG(HCINTLLAST, 0x19, REG_WIDTH_32, REG_ACCESS_RW);
ISP1362_REG(HCINTLCURR, 0x1a, REG_WIDTH_16, REG_ACCESS_R);
ISP1362_REG(HCATLBUFSZ, 0x34, REG_WIDTH_16, REG_ACCESS_RW);
ISP1362_REG(HCATLPORT, 0x44, REG_WIDTH_16, REG_ACCESS_RW);
ISP1362_REG(HCATLBLKSZ, 0x54, REG_WIDTH_16, REG_ACCESS_RW);
ISP1362_REG(HCATLDONE, 0x1b, REG_WIDTH_32, REG_ACCESS_R);
ISP1362_REG(HCATLSKIP, 0x1c, REG_WIDTH_32, REG_ACCESS_RW);
ISP1362_REG(HCATLLAST, 0x1d, REG_WIDTH_32, REG_ACCESS_RW);
ISP1362_REG(HCATLCURR, 0x1e, REG_WIDTH_16, REG_ACCESS_R);
ISP1362_REG(HCATLDTC, 0x51, REG_WIDTH_16, REG_ACCESS_RW);
ISP1362_REG(HCATLDTCTO, 0x52, REG_WIDTH_16, REG_ACCESS_RW);
ISP1362_REG(OTGCONTROL, 0x62, REG_WIDTH_16, REG_ACCESS_RW);
ISP1362_REG(OTGSTATUS, 0x67, REG_WIDTH_16, REG_ACCESS_R);
ISP1362_REG(OTGINT, 0x68, REG_WIDTH_16, REG_ACCESS_RW);
ISP1362_REG(OTGINTENB, 0x69, REG_WIDTH_16, REG_ACCESS_RW);
ISP1362_REG(OTGTIMER, 0x6A, REG_WIDTH_16, REG_ACCESS_RW);
ISP1362_REG(OTGALTTMR, 0x6C, REG_WIDTH_16, REG_ACCESS_RW);
/* Philips transfer descriptor, cpu-endian */
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)
u16 faddr;
#define PTD_FA_MSK (0x7f << 0)
/* PTD Byte 7: [StartingFrame (if ISO PTD) | StartingFrame[0..4], PollingRate[0..2] (if INT PTD)] */
#define PTD_SF_ISO_MSK (0xff << 8)
#define PTD_SF_INT_MSK (0x1f << 8)
#define PTD_PR_MSK (0x07 << 13)
} __attribute__ ((packed, aligned(2)));
#define PTD_HEADER_SIZE sizeof(struct ptd)
/* ------------------------------------------------------------------------- */
/* Copied from ohci.h: */
/*
* Hardware transfer status codes -- CC from PTD
*/
#define PTD_CC_NOERROR 0x00
#define PTD_CC_CRC 0x01
#define PTD_CC_BITSTUFFING 0x02
#define PTD_CC_DATATOGGLEM 0x03
#define PTD_CC_STALL 0x04
#define PTD_DEVNOTRESP 0x05
#define PTD_PIDCHECKFAIL 0x06
#define PTD_UNEXPECTEDPID 0x07
#define PTD_DATAOVERRUN 0x08
#define PTD_DATAUNDERRUN 0x09
/* 0x0A, 0x0B reserved for hardware */
#define PTD_BUFFEROVERRUN 0x0C
#define PTD_BUFFERUNDERRUN 0x0D
/* 0x0E, 0x0F reserved for HCD */
#define PTD_NOTACCESSED 0x0F
/* map OHCI TD status codes (CC) to errno values */
static const int cc_to_error[16] = {
/* No Error */ 0,
/* CRC Error */ -EILSEQ,
/* Bit Stuff */ -EPROTO,
/* Data Togg */ -EILSEQ,
/* Stall */ -EPIPE,
/* DevNotResp */ -ETIMEDOUT,
/* PIDCheck */ -EPROTO,
/* UnExpPID */ -EPROTO,
/* DataOver */ -EOVERFLOW,
/* DataUnder */ -EREMOTEIO,
/* (for hw) */ -EIO,
/* (for hw) */ -EIO,
/* BufferOver */ -ECOMM,
/* BuffUnder */ -ENOSR,
/* (for HCD) */ -EALREADY,
/* (for HCD) */ -EALREADY
};
/*
* HcControl (control) register masks
*/
#define OHCI_CTRL_HCFS (3 << 6) /* host controller functional state */
#define OHCI_CTRL_RWC (1 << 9) /* remote wakeup connected */
#define OHCI_CTRL_RWE (1 << 10) /* remote wakeup enable */
/* pre-shifted values for HCFS */
# define OHCI_USB_RESET (0 << 6)
# define OHCI_USB_RESUME (1 << 6)
# define OHCI_USB_OPER (2 << 6)
# define OHCI_USB_SUSPEND (3 << 6)
/*
* HcCommandStatus (cmdstatus) register masks
*/
#define OHCI_HCR (1 << 0) /* host controller reset */
#define OHCI_SOC (3 << 16) /* scheduling overrun count */
/*
* masks used with interrupt registers:
* HcInterruptStatus (intrstatus)
* HcInterruptEnable (intrenable)
* HcInterruptDisable (intrdisable)
*/
#define OHCI_INTR_SO (1 << 0) /* scheduling overrun */
#define OHCI_INTR_WDH (1 << 1) /* writeback of done_head */
#define OHCI_INTR_SF (1 << 2) /* start frame */
#define OHCI_INTR_RD (1 << 3) /* resume detect */
#define OHCI_INTR_UE (1 << 4) /* unrecoverable error */
#define OHCI_INTR_FNO (1 << 5) /* frame number overflow */
#define OHCI_INTR_RHSC (1 << 6) /* root hub status change */
#define OHCI_INTR_OC (1 << 30) /* ownership change */
#define OHCI_INTR_MIE (1 << 31) /* master interrupt enable */
/* roothub.portstatus [i] bits */
#define RH_PS_CCS 0x00000001 /* current connect status */
#define RH_PS_PES 0x00000002 /* port enable status*/
#define RH_PS_PSS 0x00000004 /* port suspend status */
#define RH_PS_POCI 0x00000008 /* port over current indicator */
#define RH_PS_PRS 0x00000010 /* port reset status */
#define RH_PS_PPS 0x00000100 /* port power status */
#define RH_PS_LSDA 0x00000200 /* low speed device attached */
#define RH_PS_CSC 0x00010000 /* connect status change */
#define RH_PS_PESC 0x00020000 /* port enable status change */
#define RH_PS_PSSC 0x00040000 /* port suspend status change */
#define RH_PS_OCIC 0x00080000 /* over current indicator change */
#define RH_PS_PRSC 0x00100000 /* port reset status change */
/* roothub.status bits */
#define RH_HS_LPS 0x00000001 /* local power status */
#define RH_HS_OCI 0x00000002 /* over current indicator */
#define RH_HS_DRWE 0x00008000 /* device remote wakeup enable */
#define RH_HS_LPSC 0x00010000 /* local power status change */
#define RH_HS_OCIC 0x00020000 /* over current indicator change */
#define RH_HS_CRWE 0x80000000 /* clear remote wakeup enable */
/* roothub.b masks */
#define RH_B_DR 0x0000ffff /* device removable flags */
#define RH_B_PPCM 0xffff0000 /* port power control mask */
/* roothub.a masks */
#define RH_A_NDP (0xff << 0) /* number of 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) /* over current protection mode */
#define RH_A_NOCP (1 << 12) /* no over current protection */
#define RH_A_POTPGT (0xff << 24) /* power on to power good time */
#define FI 0x2edf /* 12000 bits per frame (-1) */
#define FSMP(fi) (0x7fff & ((6 * ((fi) - 210)) / 7))
#define LSTHRESH 0x628 /* lowspeed bit threshold */
/* ------------------------------------------------------------------------- */
/* 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_FA(p) (((p)->faddr & PTD_FA_MSK) >> 0)
#define PTD_FA(v) (((v) << 0) & PTD_FA_MSK)
#define PTD_GET_SF_INT(p) (((p)->faddr & PTD_SF_INT_MSK) >> 8)
#define PTD_SF_INT(v) (((v) << 8) & PTD_SF_INT_MSK)
#define PTD_GET_SF_ISO(p) (((p)->faddr & PTD_SF_ISO_MSK) >> 8)
#define PTD_SF_ISO(v) (((v) << 8) & PTD_SF_ISO_MSK)
#define PTD_GET_PR(p) (((p)->faddr & PTD_PR_MSK) >> 13)
#define PTD_PR(v) (((v) << 13) & PTD_PR_MSK)
#define LOG2_PERIODIC_SIZE 5 /* arbitrary; this matches OHCI */
#define PERIODIC_SIZE (1 << LOG2_PERIODIC_SIZE)
struct isp1362_ep {
struct usb_host_endpoint *hep;
struct usb_device *udev;
/* philips transfer descriptor */
struct ptd ptd;
u8 maxpacket;
u8 epnum;
u8 nextpid;
u16 error_count;
u16 length; /* of current packet */
s16 ptd_offset; /* buffer offset in ISP1362 where
PTD has been stored
(for access thru HCDIRDATA) */
int ptd_index;
int num_ptds;
void *data; /* to databuf */
/* queue of active EPs (the ones transmitted to the chip) */
struct list_head active;
/* periodic schedule */
u8 branch;
u16 interval;
u16 load;
u16 last_iso;
/* async schedule */
struct list_head schedule; /* list of all EPs that need processing */
struct list_head remove_list;
int num_req;
};
struct isp1362_ep_queue {
struct list_head active; /* list of PTDs currently processed by HC */
atomic_t finishing;
unsigned long buf_map;
unsigned long skip_map;
int free_ptd;
u16 buf_start;
u16 buf_size;
u16 blk_size; /* PTD buffer block size for ATL and INTL */
u8 buf_count;
u8 buf_avail;
char name[16];
/* for statistical tracking */
u8 stat_maxptds; /* Max # of ptds seen simultaneously in fifo */
u8 ptd_count; /* number of ptds submitted to this queue */
};
struct isp1362_hcd {
spinlock_t lock;
void __iomem *addr_reg;
void __iomem *data_reg;
struct isp1362_platform_data *board;
struct dentry *debug_file;
unsigned long stat1, stat2, stat4, stat8, stat16;
/* HC registers */
u32 intenb; /* "OHCI" interrupts */
u16 irqenb; /* uP interrupts */
/* Root hub registers */
u32 rhdesca;
u32 rhdescb;
u32 rhstatus;
u32 rhport[MAX_ROOT_PORTS];
unsigned long next_statechange;
/* HC control reg shadow copy */
u32 hc_control;
/* async schedule: control, bulk */
struct list_head async;
/* periodic schedule: int */
u16 load[PERIODIC_SIZE];
struct list_head periodic;
u16 fmindex;
/* periodic schedule: isochronous */
struct list_head isoc;
unsigned int istl_flip:1;
unsigned int irq_active:1;
/* Schedules for the current frame */
struct isp1362_ep_queue atl_queue;
struct isp1362_ep_queue intl_queue;
struct isp1362_ep_queue istl_queue[2];
/* list of PTDs retrieved from HC */
struct list_head remove_list;
enum {
ISP1362_INT_SOF,
ISP1362_INT_ISTL0,
ISP1362_INT_ISTL1,
ISP1362_INT_EOT,
ISP1362_INT_OPR,
ISP1362_INT_SUSP,
ISP1362_INT_CLKRDY,
ISP1362_INT_INTL,
ISP1362_INT_ATL,
ISP1362_INT_OTG,
NUM_ISP1362_IRQS
} IRQ_NAMES;
unsigned int irq_stat[NUM_ISP1362_IRQS];
int req_serial;
};
static inline const char *ISP1362_INT_NAME(int n)
{
switch (n) {
case ISP1362_INT_SOF: return "SOF";
case ISP1362_INT_ISTL0: return "ISTL0";
case ISP1362_INT_ISTL1: return "ISTL1";
case ISP1362_INT_EOT: return "EOT";
case ISP1362_INT_OPR: return "OPR";
case ISP1362_INT_SUSP: return "SUSP";
case ISP1362_INT_CLKRDY: return "CLKRDY";
case ISP1362_INT_INTL: return "INTL";
case ISP1362_INT_ATL: return "ATL";
case ISP1362_INT_OTG: return "OTG";
default: return "unknown";
}
}
static inline void ALIGNSTAT(struct isp1362_hcd *isp1362_hcd, void *ptr)
{
unsigned long p = (unsigned long)ptr;
if (!(p & 0xf))
isp1362_hcd->stat16++;
else if (!(p & 0x7))
isp1362_hcd->stat8++;
else if (!(p & 0x3))
isp1362_hcd->stat4++;
else if (!(p & 0x1))
isp1362_hcd->stat2++;
else
isp1362_hcd->stat1++;
}
static inline struct isp1362_hcd *hcd_to_isp1362_hcd(struct usb_hcd *hcd)
{
return (struct isp1362_hcd *) (hcd->hcd_priv);
}
static inline struct usb_hcd *isp1362_hcd_to_hcd(struct isp1362_hcd *isp1362_hcd)
{
return container_of((void *)isp1362_hcd, struct usb_hcd, hcd_priv);
}
#define frame_before(f1, f2) ((s16)((u16)f1 - (u16)f2) < 0)
/*
* ISP1362 HW Interface
*/
#define DBG(level, fmt...) \
do { \
if (dbg_level > level) \
pr_debug(fmt); \
} while (0)
#ifdef VERBOSE
# define VDBG(fmt...) DBG(3, fmt)
#else
# define VDBG(fmt...) do {} while (0)
#endif
#ifdef REGISTERS
# define RDBG(fmt...) DBG(1, fmt)
#else
# define RDBG(fmt...) do {} while (0)
#endif
#ifdef URB_TRACE
#define URB_DBG(fmt...) DBG(0, fmt)
#else
#define URB_DBG(fmt...) do {} while (0)
#endif
#if USE_PLATFORM_DELAY
#if USE_NDELAY
#error USE_PLATFORM_DELAY and USE_NDELAY defined simultaneously.
#endif
#define isp1362_delay(h, d) (h)->board->delay(isp1362_hcd_to_hcd(h)->self.controller, d)
#elif USE_NDELAY
#define isp1362_delay(h, d) ndelay(d)
#else
#define isp1362_delay(h, d) do {} while (0)
#endif
#define get_urb(ep) ({ \
BUG_ON(list_empty(&ep->hep->urb_list)); \
container_of(ep->hep->urb_list.next, struct urb, urb_list); \
})
/* basic access functions for ISP1362 chip registers */
/* NOTE: The contents of the address pointer register cannot be read back! The driver must ensure,
* that all register accesses are performed with interrupts disabled, since the interrupt
* handler has no way of restoring the previous state.
*/
static void isp1362_write_addr(struct isp1362_hcd *isp1362_hcd, isp1362_reg_t reg)
{
REG_ACCESS_TEST(reg);
DUMMY_DELAY_ACCESS;
writew(ISP1362_REG_NO(reg), isp1362_hcd->addr_reg);
DUMMY_DELAY_ACCESS;
isp1362_delay(isp1362_hcd, 1);
}
static void isp1362_write_data16(struct isp1362_hcd *isp1362_hcd, u16 val)
{
DUMMY_DELAY_ACCESS;
writew(val, isp1362_hcd->data_reg);
}
static u16 isp1362_read_data16(struct isp1362_hcd *isp1362_hcd)
{
u16 val;
DUMMY_DELAY_ACCESS;
val = readw(isp1362_hcd->data_reg);
return val;
}
static void isp1362_write_data32(struct isp1362_hcd *isp1362_hcd, u32 val)
{
#if USE_32BIT
DUMMY_DELAY_ACCESS;
writel(val, isp1362_hcd->data_reg);
#else
DUMMY_DELAY_ACCESS;
writew((u16)val, isp1362_hcd->data_reg);
DUMMY_DELAY_ACCESS;
writew(val >> 16, isp1362_hcd->data_reg);
#endif
}
static u32 isp1362_read_data32(struct isp1362_hcd *isp1362_hcd)
{
u32 val;
#if USE_32BIT
DUMMY_DELAY_ACCESS;
val = readl(isp1362_hcd->data_reg);
#else
DUMMY_DELAY_ACCESS;
val = (u32)readw(isp1362_hcd->data_reg);
DUMMY_DELAY_ACCESS;
val |= (u32)readw(isp1362_hcd->data_reg) << 16;
#endif
return val;
}
/* use readsw/writesw to access the fifo whenever possible */
/* assume HCDIRDATA or XFERCTR & addr_reg have been set up */
static void isp1362_read_fifo(struct isp1362_hcd *isp1362_hcd, void *buf, u16 len)
{
u8 *dp = buf;
u16 data;
if (!len)
return;
RDBG("%s: Reading %d byte from fifo to mem @ %p\n", __func__, len, buf);
#if USE_32BIT
if (len >= 4) {
RDBG("%s: Using readsl for %d dwords\n", __func__, len >> 2);
readsl(isp1362_hcd->data_reg, dp, len >> 2);
dp += len & ~3;
len &= 3;
}
#endif
if (len >= 2) {
RDBG("%s: Using readsw for %d words\n", __func__, len >> 1);
insw((unsigned long)isp1362_hcd->data_reg, dp, len >> 1);
dp += len & ~1;
len &= 1;
}
BUG_ON(len & ~1);
if (len > 0) {
data = isp1362_read_data16(isp1362_hcd);
RDBG("%s: Reading trailing byte %02x to mem @ %08x\n", __func__,
(u8)data, (u32)dp);
*dp = (u8)data;
}
}
static void isp1362_write_fifo(struct isp1362_hcd *isp1362_hcd, void *buf, u16 len)
{
u8 *dp = buf;
u16 data;
if (!len)
return;
if ((unsigned long)dp & 0x1) {
/* not aligned */
for (; len > 1; len -= 2) {
data = *dp++;
data |= *dp++ << 8;
isp1362_write_data16(isp1362_hcd, data);
}
if (len)
isp1362_write_data16(isp1362_hcd, *dp);
return;
}
RDBG("%s: Writing %d byte to fifo from memory @%p\n", __func__, len, buf);
#if USE_32BIT
if (len >= 4) {
RDBG("%s: Using writesl for %d dwords\n", __func__, len >> 2);
writesl(isp1362_hcd->data_reg, dp, len >> 2);
dp += len & ~3;
len &= 3;
}
#endif
if (len >= 2) {
RDBG("%s: Using writesw for %d words\n", __func__, len >> 1);
outsw((unsigned long)isp1362_hcd->data_reg, dp, len >> 1);
dp += len & ~1;
len &= 1;
}
BUG_ON(len & ~1);
if (len > 0) {
/* finally write any trailing byte; we don't need to care
* about the high byte of the last word written
*/
data = (u16)*dp;
RDBG("%s: Sending trailing byte %02x from mem @ %08x\n", __func__,
data, (u32)dp);
isp1362_write_data16(isp1362_hcd, data);
}
}
#define isp1362_read_reg16(d, r) ({ \
u16 __v; \
REG_WIDTH_TEST(ISP1362_REG_##r, REG_WIDTH_16); \
isp1362_write_addr(d, ISP1362_REG_##r); \
__v = isp1362_read_data16(d); \
RDBG("%s: Read %04x from %s[%02x]\n", __func__, __v, #r, \
ISP1362_REG_NO(ISP1362_REG_##r)); \
__v; \
})
#define isp1362_read_reg32(d, r) ({ \
u32 __v; \
REG_WIDTH_TEST(ISP1362_REG_##r, REG_WIDTH_32); \
isp1362_write_addr(d, ISP1362_REG_##r); \
__v = isp1362_read_data32(d); \
RDBG("%s: Read %08x from %s[%02x]\n", __func__, __v, #r, \
ISP1362_REG_NO(ISP1362_REG_##r)); \
__v; \
})
#define isp1362_write_reg16(d, r, v) { \
REG_WIDTH_TEST(ISP1362_REG_##r, REG_WIDTH_16); \
isp1362_write_addr(d, (ISP1362_REG_##r) | ISP1362_REG_WRITE_OFFSET); \
isp1362_write_data16(d, (u16)(v)); \
RDBG("%s: Wrote %04x to %s[%02x]\n", __func__, (u16)(v), #r, \
ISP1362_REG_NO(ISP1362_REG_##r)); \
}
#define isp1362_write_reg32(d, r, v) { \
REG_WIDTH_TEST(ISP1362_REG_##r, REG_WIDTH_32); \
isp1362_write_addr(d, (ISP1362_REG_##r) | ISP1362_REG_WRITE_OFFSET); \
isp1362_write_data32(d, (u32)(v)); \
RDBG("%s: Wrote %08x to %s[%02x]\n", __func__, (u32)(v), #r, \
ISP1362_REG_NO(ISP1362_REG_##r)); \
}
#define isp1362_set_mask16(d, r, m) { \
u16 __v; \
__v = isp1362_read_reg16(d, r); \
if ((__v | m) != __v) \
isp1362_write_reg16(d, r, __v | m); \
}
#define isp1362_clr_mask16(d, r, m) { \
u16 __v; \
__v = isp1362_read_reg16(d, r); \
if ((__v & ~m) != __v) \
isp1362_write_reg16(d, r, __v & ~m); \
}
#define isp1362_set_mask32(d, r, m) { \
u32 __v; \
__v = isp1362_read_reg32(d, r); \
if ((__v | m) != __v) \
isp1362_write_reg32(d, r, __v | m); \
}
#define isp1362_clr_mask32(d, r, m) { \
u32 __v; \
__v = isp1362_read_reg32(d, r); \
if ((__v & ~m) != __v) \
isp1362_write_reg32(d, r, __v & ~m); \
}
#define isp1362_show_reg(d, r) { \
if ((ISP1362_REG_##r & REG_WIDTH_MASK) == REG_WIDTH_32) \
DBG(0, "%-12s[%02x]: %08x\n", #r, \
ISP1362_REG_NO(ISP1362_REG_##r), isp1362_read_reg32(d, r)); \
else \
DBG(0, "%-12s[%02x]: %04x\n", #r, \
ISP1362_REG_NO(ISP1362_REG_##r), isp1362_read_reg16(d, r)); \
}
static void __attribute__((__unused__)) isp1362_show_regs(struct isp1362_hcd *isp1362_hcd)
{
isp1362_show_reg(isp1362_hcd, HCREVISION);
isp1362_show_reg(isp1362_hcd, HCCONTROL);
isp1362_show_reg(isp1362_hcd, HCCMDSTAT);
isp1362_show_reg(isp1362_hcd, HCINTSTAT);
isp1362_show_reg(isp1362_hcd, HCINTENB);
isp1362_show_reg(isp1362_hcd, HCFMINTVL);
isp1362_show_reg(isp1362_hcd, HCFMREM);
isp1362_show_reg(isp1362_hcd, HCFMNUM);
isp1362_show_reg(isp1362_hcd, HCLSTHRESH);
isp1362_show_reg(isp1362_hcd, HCRHDESCA);
isp1362_show_reg(isp1362_hcd, HCRHDESCB);
isp1362_show_reg(isp1362_hcd, HCRHSTATUS);
isp1362_show_reg(isp1362_hcd, HCRHPORT1);
isp1362_show_reg(isp1362_hcd, HCRHPORT2);
isp1362_show_reg(isp1362_hcd, HCHWCFG);
isp1362_show_reg(isp1362_hcd, HCDMACFG);
isp1362_show_reg(isp1362_hcd, HCXFERCTR);
isp1362_show_reg(isp1362_hcd, HCuPINT);
if (in_interrupt())
DBG(0, "%-12s[%02x]: %04x\n", "HCuPINTENB",
ISP1362_REG_NO(ISP1362_REG_HCuPINTENB), isp1362_hcd->irqenb);
else
isp1362_show_reg(isp1362_hcd, HCuPINTENB);
isp1362_show_reg(isp1362_hcd, HCCHIPID);
isp1362_show_reg(isp1362_hcd, HCSCRATCH);
isp1362_show_reg(isp1362_hcd, HCBUFSTAT);
isp1362_show_reg(isp1362_hcd, HCDIRADDR);
/* Access would advance fifo
* isp1362_show_reg(isp1362_hcd, HCDIRDATA);
*/
isp1362_show_reg(isp1362_hcd, HCISTLBUFSZ);
isp1362_show_reg(isp1362_hcd, HCISTLRATE);
isp1362_show_reg(isp1362_hcd, HCINTLBUFSZ);
isp1362_show_reg(isp1362_hcd, HCINTLBLKSZ);
isp1362_show_reg(isp1362_hcd, HCINTLDONE);
isp1362_show_reg(isp1362_hcd, HCINTLSKIP);
isp1362_show_reg(isp1362_hcd, HCINTLLAST);
isp1362_show_reg(isp1362_hcd, HCINTLCURR);
isp1362_show_reg(isp1362_hcd, HCATLBUFSZ);
isp1362_show_reg(isp1362_hcd, HCATLBLKSZ);
/* only valid after ATL_DONE interrupt
* isp1362_show_reg(isp1362_hcd, HCATLDONE);
*/
isp1362_show_reg(isp1362_hcd, HCATLSKIP);
isp1362_show_reg(isp1362_hcd, HCATLLAST);
isp1362_show_reg(isp1362_hcd, HCATLCURR);
isp1362_show_reg(isp1362_hcd, HCATLDTC);
isp1362_show_reg(isp1362_hcd, HCATLDTCTO);
}
static void isp1362_write_diraddr(struct isp1362_hcd *isp1362_hcd, u16 offset, u16 len)
{
len = (len + 1) & ~1;
isp1362_clr_mask16(isp1362_hcd, HCDMACFG, HCDMACFG_CTR_ENABLE);
isp1362_write_reg32(isp1362_hcd, HCDIRADDR,
HCDIRADDR_ADDR(offset) | HCDIRADDR_COUNT(len));
}
static void isp1362_read_buffer(struct isp1362_hcd *isp1362_hcd, void *buf, u16 offset, int len)
{
isp1362_write_diraddr(isp1362_hcd, offset, len);
DBG(3, "%s: Reading %d byte from buffer @%04x to memory @ %p\n",
__func__, len, offset, buf);
isp1362_write_reg16(isp1362_hcd, HCuPINT, HCuPINT_EOT);
isp1362_write_addr(isp1362_hcd, ISP1362_REG_HCDIRDATA);
isp1362_read_fifo(isp1362_hcd, buf, len);
isp1362_write_reg16(isp1362_hcd, HCuPINT, HCuPINT_EOT);
}
static void isp1362_write_buffer(struct isp1362_hcd *isp1362_hcd, void *buf, u16 offset, int len)
{
isp1362_write_diraddr(isp1362_hcd, offset, len);
DBG(3, "%s: Writing %d byte to buffer @%04x from memory @ %p\n",
__func__, len, offset, buf);
isp1362_write_reg16(isp1362_hcd, HCuPINT, HCuPINT_EOT);
isp1362_write_addr(isp1362_hcd, ISP1362_REG_HCDIRDATA | ISP1362_REG_WRITE_OFFSET);
isp1362_write_fifo(isp1362_hcd, buf, len);
isp1362_write_reg16(isp1362_hcd, HCuPINT, HCuPINT_EOT);
}
static void __attribute__((unused)) dump_data(char *buf, int len)
{
if (dbg_level > 0) {
int k;
int lf = 0;
for (k = 0; k < len; ++k) {
if (!lf)
DBG(0, "%04x:", k);
printk(" %02x", ((u8 *) buf)[k]);
lf = 1;
if (!k)
continue;
if (k % 16 == 15) {
printk("\n");
lf = 0;
continue;
}
if (k % 8 == 7)
printk(" ");
if (k % 4 == 3)
printk(" ");
}
if (lf)
printk("\n");
}
}
#if defined(PTD_TRACE)
static void dump_ptd(struct ptd *ptd)
{
DBG(0, "EP %p: CC=%x EP=%d DIR=%x CNT=%d LEN=%d MPS=%d TGL=%x ACT=%x FA=%d SPD=%x SF=%x PR=%x LST=%x\n",
container_of(ptd, struct isp1362_ep, ptd),
PTD_GET_CC(ptd), PTD_GET_EP(ptd), PTD_GET_DIR(ptd),
PTD_GET_COUNT(ptd), PTD_GET_LEN(ptd), PTD_GET_MPS(ptd),
PTD_GET_TOGGLE(ptd), PTD_GET_ACTIVE(ptd), PTD_GET_FA(ptd),
PTD_GET_SPD(ptd), PTD_GET_SF_INT(ptd), PTD_GET_PR(ptd), PTD_GET_LAST(ptd));
DBG(0, " %04x %04x %04x %04x\n", ptd->count, ptd->mps, ptd->len, ptd->faddr);
}
static void dump_ptd_out_data(struct ptd *ptd, u8 *buf)
{
if (dbg_level > 0) {
if (PTD_GET_DIR(ptd) != PTD_DIR_IN && PTD_GET_LEN(ptd)) {
DBG(0, "--out->\n");
dump_data(buf, PTD_GET_LEN(ptd));
}
}
}
static void dump_ptd_in_data(struct ptd *ptd, u8 *buf)
{
if (dbg_level > 0) {
if (PTD_GET_DIR(ptd) == PTD_DIR_IN && PTD_GET_COUNT(ptd)) {
DBG(0, "<--in--\n");
dump_data(buf, PTD_GET_COUNT(ptd));
}
DBG(0, "-----\n");
}
}
static void dump_ptd_queue(struct isp1362_ep_queue *epq)
{
struct isp1362_ep *ep;
int dbg = dbg_level;
dbg_level = 1;
list_for_each_entry(ep, &epq->active, active) {
dump_ptd(&ep->ptd);
dump_data(ep->data, ep->length);
}
dbg_level = dbg;
}
#else
#define dump_ptd(ptd) do {} while (0)
#define dump_ptd_in_data(ptd, buf) do {} while (0)
#define dump_ptd_out_data(ptd, buf) do {} while (0)
#define dump_ptd_data(ptd, buf) do {} while (0)
#define dump_ptd_queue(epq) do {} while (0)
#endif
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