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freebsd-dev/sys/dev/usb/controller/ehci.h
Eitan Adler 7a22215c53 Fix undefined behavior: (1 << 31) is not defined as 1 is an int and this 
shifts into the sign bit.  Instead use (1U << 31) which gets the
expected result.

This fix is not ideal as it assumes a 32 bit int, but does fix the issue
for most cases.

A similar change was made in OpenBSD.

Discussed with:	-arch, rdivacky
Reviewed by:	cperciva
2013-11-30 22:17:27 +00:00

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/* $FreeBSD$ */
/*-
* Copyright (c) 2001 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Lennart Augustsson (lennart@augustsson.net).
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef _EHCI_H_
#define _EHCI_H_
#define EHCI_MAX_DEVICES MIN(USB_MAX_DEVICES, 128)
/*
* Alignment NOTE: structures must be aligned so that the hardware can index
* without performing addition.
*/
#define EHCI_FRAMELIST_ALIGN 0x1000 /* bytes */
#define EHCI_FRAMELIST_COUNT 1024 /* units */
#define EHCI_VIRTUAL_FRAMELIST_COUNT 128 /* units */
#if ((8*EHCI_VIRTUAL_FRAMELIST_COUNT) < USB_MAX_HS_ISOC_FRAMES_PER_XFER)
#error "maximum number of high-speed isochronous frames is higher than supported!"
#endif
#if (EHCI_VIRTUAL_FRAMELIST_COUNT < USB_MAX_FS_ISOC_FRAMES_PER_XFER)
#error "maximum number of full-speed isochronous frames is higher than supported!"
#endif
/* Link types */
#define EHCI_LINK_TERMINATE 0x00000001
#define EHCI_LINK_TYPE(x) ((x) & 0x00000006)
#define EHCI_LINK_ITD 0x0
#define EHCI_LINK_QH 0x2
#define EHCI_LINK_SITD 0x4
#define EHCI_LINK_FSTN 0x6
#define EHCI_LINK_ADDR(x) ((x) &~ 0x1f)
/* Structures alignment (bytes) */
#define EHCI_ITD_ALIGN 128
#define EHCI_SITD_ALIGN 64
#define EHCI_QTD_ALIGN 64
#define EHCI_QH_ALIGN 128
#define EHCI_FSTN_ALIGN 32
/* Data buffers are divided into one or more pages */
#define EHCI_PAGE_SIZE 0x1000
#if ((USB_PAGE_SIZE < EHCI_PAGE_SIZE) || (EHCI_PAGE_SIZE == 0) || \
(USB_PAGE_SIZE < EHCI_ITD_ALIGN) || (EHCI_ITD_ALIGN == 0) || \
(USB_PAGE_SIZE < EHCI_SITD_ALIGN) || (EHCI_SITD_ALIGN == 0) || \
(USB_PAGE_SIZE < EHCI_QTD_ALIGN) || (EHCI_QTD_ALIGN == 0) || \
(USB_PAGE_SIZE < EHCI_QH_ALIGN) || (EHCI_QH_ALIGN == 0) || \
(USB_PAGE_SIZE < EHCI_FSTN_ALIGN) || (EHCI_FSTN_ALIGN == 0))
#error "Invalid USB page size!"
#endif
/*
* Isochronous Transfer Descriptor. This descriptor is used for high speed
* transfers only.
*/
struct ehci_itd {
volatile uint32_t itd_next;
volatile uint32_t itd_status[8];
#define EHCI_ITD_SET_LEN(x) ((x) << 16)
#define EHCI_ITD_GET_LEN(x) (((x) >> 16) & 0xFFF)
#define EHCI_ITD_IOC (1 << 15)
#define EHCI_ITD_SET_PG(x) ((x) << 12)
#define EHCI_ITD_GET_PG(x) (((x) >> 12) & 0x7)
#define EHCI_ITD_SET_OFFS(x) (x)
#define EHCI_ITD_GET_OFFS(x) (((x) >> 0) & 0xFFF)
#define EHCI_ITD_ACTIVE (1U << 31)
#define EHCI_ITD_DATABUFERR (1 << 30)
#define EHCI_ITD_BABBLE (1 << 29)
#define EHCI_ITD_XACTERR (1 << 28)
volatile uint32_t itd_bp[7];
/* itd_bp[0] */
#define EHCI_ITD_SET_ADDR(x) (x)
#define EHCI_ITD_GET_ADDR(x) (((x) >> 0) & 0x7F)
#define EHCI_ITD_SET_ENDPT(x) ((x) << 8)
#define EHCI_ITD_GET_ENDPT(x) (((x) >> 8) & 0xF)
/* itd_bp[1] */
#define EHCI_ITD_SET_DIR_IN (1 << 11)
#define EHCI_ITD_SET_DIR_OUT (0 << 11)
#define EHCI_ITD_SET_MPL(x) (x)
#define EHCI_ITD_GET_MPL(x) (((x) >> 0) & 0x7FF)
volatile uint32_t itd_bp_hi[7];
/*
* Extra information needed:
*/
uint32_t itd_self;
struct ehci_itd *next;
struct ehci_itd *prev;
struct ehci_itd *obj_next;
struct usb_page_cache *page_cache;
} __aligned(EHCI_ITD_ALIGN);
typedef struct ehci_itd ehci_itd_t;
/*
* Split Transaction Isochronous Transfer Descriptor. This descriptor is used
* for full speed transfers only.
*/
struct ehci_sitd {
volatile uint32_t sitd_next;
volatile uint32_t sitd_portaddr;
#define EHCI_SITD_SET_DIR_OUT (0 << 31)
#define EHCI_SITD_SET_DIR_IN (1U << 31)
#define EHCI_SITD_SET_ADDR(x) (x)
#define EHCI_SITD_GET_ADDR(x) ((x) & 0x7F)
#define EHCI_SITD_SET_ENDPT(x) ((x) << 8)
#define EHCI_SITD_GET_ENDPT(x) (((x) >> 8) & 0xF)
#define EHCI_SITD_GET_DIR(x) ((x) >> 31)
#define EHCI_SITD_SET_PORT(x) ((x) << 24)
#define EHCI_SITD_GET_PORT(x) (((x) >> 24) & 0x7F)
#define EHCI_SITD_SET_HUBA(x) ((x) << 16)
#define EHCI_SITD_GET_HUBA(x) (((x) >> 16) & 0x7F)
volatile uint32_t sitd_mask;
#define EHCI_SITD_SET_SMASK(x) (x)
#define EHCI_SITD_SET_CMASK(x) ((x) << 8)
volatile uint32_t sitd_status;
#define EHCI_SITD_COMPLETE_SPLIT (1<<1)
#define EHCI_SITD_START_SPLIT (0<<1)
#define EHCI_SITD_MISSED_MICRO_FRAME (1<<2)
#define EHCI_SITD_XACTERR (1<<3)
#define EHCI_SITD_BABBLE (1<<4)
#define EHCI_SITD_DATABUFERR (1<<5)
#define EHCI_SITD_ERROR (1<<6)
#define EHCI_SITD_ACTIVE (1<<7)
#define EHCI_SITD_IOC (1<<31)
#define EHCI_SITD_SET_LEN(len) ((len)<<16)
#define EHCI_SITD_GET_LEN(x) (((x)>>16) & 0x3FF)
volatile uint32_t sitd_bp[2];
volatile uint32_t sitd_back;
volatile uint32_t sitd_bp_hi[2];
/*
* Extra information needed:
*/
uint32_t sitd_self;
struct ehci_sitd *next;
struct ehci_sitd *prev;
struct ehci_sitd *obj_next;
struct usb_page_cache *page_cache;
} __aligned(EHCI_SITD_ALIGN);
typedef struct ehci_sitd ehci_sitd_t;
/* Queue Element Transfer Descriptor */
struct ehci_qtd {
volatile uint32_t qtd_next;
volatile uint32_t qtd_altnext;
volatile uint32_t qtd_status;
#define EHCI_QTD_GET_STATUS(x) (((x) >> 0) & 0xff)
#define EHCI_QTD_SET_STATUS(x) ((x) << 0)
#define EHCI_QTD_ACTIVE 0x80
#define EHCI_QTD_HALTED 0x40
#define EHCI_QTD_BUFERR 0x20
#define EHCI_QTD_BABBLE 0x10
#define EHCI_QTD_XACTERR 0x08
#define EHCI_QTD_MISSEDMICRO 0x04
#define EHCI_QTD_SPLITXSTATE 0x02
#define EHCI_QTD_PINGSTATE 0x01
#define EHCI_QTD_STATERRS 0x74
#define EHCI_QTD_GET_PID(x) (((x) >> 8) & 0x3)
#define EHCI_QTD_SET_PID(x) ((x) << 8)
#define EHCI_QTD_PID_OUT 0x0
#define EHCI_QTD_PID_IN 0x1
#define EHCI_QTD_PID_SETUP 0x2
#define EHCI_QTD_GET_CERR(x) (((x) >> 10) & 0x3)
#define EHCI_QTD_SET_CERR(x) ((x) << 10)
#define EHCI_QTD_GET_C_PAGE(x) (((x) >> 12) & 0x7)
#define EHCI_QTD_SET_C_PAGE(x) ((x) << 12)
#define EHCI_QTD_GET_IOC(x) (((x) >> 15) & 0x1)
#define EHCI_QTD_IOC 0x00008000
#define EHCI_QTD_GET_BYTES(x) (((x) >> 16) & 0x7fff)
#define EHCI_QTD_SET_BYTES(x) ((x) << 16)
#define EHCI_QTD_GET_TOGGLE(x) (((x) >> 31) & 0x1)
#define EHCI_QTD_SET_TOGGLE(x) ((x) << 31)
#define EHCI_QTD_TOGGLE_MASK 0x80000000
#define EHCI_QTD_NBUFFERS 5
#define EHCI_QTD_PAYLOAD_MAX ((EHCI_QTD_NBUFFERS-1)*EHCI_PAGE_SIZE)
volatile uint32_t qtd_buffer[EHCI_QTD_NBUFFERS];
volatile uint32_t qtd_buffer_hi[EHCI_QTD_NBUFFERS];
/*
* Extra information needed:
*/
struct ehci_qtd *alt_next;
struct ehci_qtd *obj_next;
struct usb_page_cache *page_cache;
uint32_t qtd_self;
uint16_t len;
} __aligned(EHCI_QTD_ALIGN);
typedef struct ehci_qtd ehci_qtd_t;
/* Queue Head Sub Structure */
struct ehci_qh_sub {
volatile uint32_t qtd_next;
volatile uint32_t qtd_altnext;
volatile uint32_t qtd_status;
volatile uint32_t qtd_buffer[EHCI_QTD_NBUFFERS];
volatile uint32_t qtd_buffer_hi[EHCI_QTD_NBUFFERS];
} __aligned(4);
/* Queue Head */
struct ehci_qh {
volatile uint32_t qh_link;
volatile uint32_t qh_endp;
#define EHCI_QH_GET_ADDR(x) (((x) >> 0) & 0x7f) /* endpoint addr */
#define EHCI_QH_SET_ADDR(x) (x)
#define EHCI_QH_ADDRMASK 0x0000007f
#define EHCI_QH_GET_INACT(x) (((x) >> 7) & 0x01) /* inactivate on next */
#define EHCI_QH_INACT 0x00000080
#define EHCI_QH_GET_ENDPT(x) (((x) >> 8) & 0x0f) /* endpoint no */
#define EHCI_QH_SET_ENDPT(x) ((x) << 8)
#define EHCI_QH_GET_EPS(x) (((x) >> 12) & 0x03) /* endpoint speed */
#define EHCI_QH_SET_EPS(x) ((x) << 12)
#define EHCI_QH_SPEED_FULL 0x0
#define EHCI_QH_SPEED_LOW 0x1
#define EHCI_QH_SPEED_HIGH 0x2
#define EHCI_QH_GET_DTC(x) (((x) >> 14) & 0x01) /* data toggle control */
#define EHCI_QH_DTC 0x00004000
#define EHCI_QH_GET_HRECL(x) (((x) >> 15) & 0x01) /* head of reclamation */
#define EHCI_QH_HRECL 0x00008000
#define EHCI_QH_GET_MPL(x) (((x) >> 16) & 0x7ff) /* max packet len */
#define EHCI_QH_SET_MPL(x) ((x) << 16)
#define EHCI_QH_MPLMASK 0x07ff0000
#define EHCI_QH_GET_CTL(x) (((x) >> 27) & 0x01) /* control endpoint */
#define EHCI_QH_CTL 0x08000000
#define EHCI_QH_GET_NRL(x) (((x) >> 28) & 0x0f) /* NAK reload */
#define EHCI_QH_SET_NRL(x) ((x) << 28)
volatile uint32_t qh_endphub;
#define EHCI_QH_GET_SMASK(x) (((x) >> 0) & 0xff) /* intr sched mask */
#define EHCI_QH_SET_SMASK(x) ((x) << 0)
#define EHCI_QH_GET_CMASK(x) (((x) >> 8) & 0xff) /* split completion mask */
#define EHCI_QH_SET_CMASK(x) ((x) << 8)
#define EHCI_QH_GET_HUBA(x) (((x) >> 16) & 0x7f) /* hub address */
#define EHCI_QH_SET_HUBA(x) ((x) << 16)
#define EHCI_QH_GET_PORT(x) (((x) >> 23) & 0x7f) /* hub port */
#define EHCI_QH_SET_PORT(x) ((x) << 23)
#define EHCI_QH_GET_MULT(x) (((x) >> 30) & 0x03) /* pipe multiplier */
#define EHCI_QH_SET_MULT(x) ((x) << 30)
volatile uint32_t qh_curqtd;
struct ehci_qh_sub qh_qtd;
/*
* Extra information needed:
*/
struct ehci_qh *next;
struct ehci_qh *prev;
struct ehci_qh *obj_next;
struct usb_page_cache *page_cache;
uint32_t qh_self;
} __aligned(EHCI_QH_ALIGN);
typedef struct ehci_qh ehci_qh_t;
/* Periodic Frame Span Traversal Node */
struct ehci_fstn {
volatile uint32_t fstn_link;
volatile uint32_t fstn_back;
} __aligned(EHCI_FSTN_ALIGN);
typedef struct ehci_fstn ehci_fstn_t;
struct ehci_hw_softc {
struct usb_page_cache pframes_pc;
struct usb_page_cache terminate_pc;
struct usb_page_cache async_start_pc;
struct usb_page_cache intr_start_pc[EHCI_VIRTUAL_FRAMELIST_COUNT];
struct usb_page_cache isoc_hs_start_pc[EHCI_VIRTUAL_FRAMELIST_COUNT];
struct usb_page_cache isoc_fs_start_pc[EHCI_VIRTUAL_FRAMELIST_COUNT];
struct usb_page pframes_pg;
struct usb_page terminate_pg;
struct usb_page async_start_pg;
struct usb_page intr_start_pg[EHCI_VIRTUAL_FRAMELIST_COUNT];
struct usb_page isoc_hs_start_pg[EHCI_VIRTUAL_FRAMELIST_COUNT];
struct usb_page isoc_fs_start_pg[EHCI_VIRTUAL_FRAMELIST_COUNT];
};
struct ehci_config_desc {
struct usb_config_descriptor confd;
struct usb_interface_descriptor ifcd;
struct usb_endpoint_descriptor endpd;
} __packed;
union ehci_hub_desc {
struct usb_status stat;
struct usb_port_status ps;
struct usb_hub_descriptor hubd;
uint8_t temp[128];
};
typedef struct ehci_softc {
struct ehci_hw_softc sc_hw;
struct usb_bus sc_bus; /* base device */
struct usb_callout sc_tmo_pcd;
struct usb_callout sc_tmo_poll;
union ehci_hub_desc sc_hub_desc;
struct usb_device *sc_devices[EHCI_MAX_DEVICES];
struct resource *sc_io_res;
struct resource *sc_irq_res;
struct ehci_qh *sc_async_p_last;
struct ehci_qh *sc_intr_p_last[EHCI_VIRTUAL_FRAMELIST_COUNT];
struct ehci_sitd *sc_isoc_fs_p_last[EHCI_VIRTUAL_FRAMELIST_COUNT];
struct ehci_itd *sc_isoc_hs_p_last[EHCI_VIRTUAL_FRAMELIST_COUNT];
void *sc_intr_hdl;
bus_size_t sc_io_size;
bus_space_tag_t sc_io_tag;
bus_space_handle_t sc_io_hdl;
uint32_t sc_terminate_self; /* TD short packet termination pointer */
uint32_t sc_eintrs;
uint16_t sc_intr_stat[EHCI_VIRTUAL_FRAMELIST_COUNT];
uint16_t sc_id_vendor; /* vendor ID for root hub */
uint16_t sc_flags; /* chip specific flags */
#define EHCI_SCFLG_SETMODE 0x0001 /* set bridge mode again after init */
#define EHCI_SCFLG_FORCESPEED 0x0002 /* force speed */
#define EHCI_SCFLG_NORESTERM 0x0004 /* don't terminate reset sequence */
#define EHCI_SCFLG_BIGEDESC 0x0008 /* big-endian byte order descriptors */
#define EHCI_SCFLG_BIGEMMIO 0x0010 /* big-endian byte order MMIO */
#define EHCI_SCFLG_TT 0x0020 /* transaction translator present */
#define EHCI_SCFLG_LOSTINTRBUG 0x0040 /* workaround for VIA / ATI chipsets */
#define EHCI_SCFLG_IAADBUG 0x0080 /* workaround for nVidia chipsets */
#define EHCI_SCFLG_DONTRESET 0x0100 /* don't reset ctrl. in ehci_init() */
#define EHCI_SCFLG_DONEINIT 0x1000 /* ehci_init() has been called. */
uint8_t sc_offs; /* offset to operational registers */
uint8_t sc_doorbell_disable; /* set on doorbell failure */
uint8_t sc_noport;
uint8_t sc_addr; /* device address */
uint8_t sc_conf; /* device configuration */
uint8_t sc_isreset;
uint8_t sc_hub_idata[8];
char sc_vendor[16]; /* vendor string for root hub */
} ehci_softc_t;
#define EREAD1(sc, a) bus_space_read_1((sc)->sc_io_tag, (sc)->sc_io_hdl, (a))
#define EREAD2(sc, a) bus_space_read_2((sc)->sc_io_tag, (sc)->sc_io_hdl, (a))
#define EREAD4(sc, a) bus_space_read_4((sc)->sc_io_tag, (sc)->sc_io_hdl, (a))
#define EWRITE1(sc, a, x) \
bus_space_write_1((sc)->sc_io_tag, (sc)->sc_io_hdl, (a), (x))
#define EWRITE2(sc, a, x) \
bus_space_write_2((sc)->sc_io_tag, (sc)->sc_io_hdl, (a), (x))
#define EWRITE4(sc, a, x) \
bus_space_write_4((sc)->sc_io_tag, (sc)->sc_io_hdl, (a), (x))
#define EOREAD1(sc, a) \
bus_space_read_1((sc)->sc_io_tag, (sc)->sc_io_hdl, (sc)->sc_offs+(a))
#define EOREAD2(sc, a) \
bus_space_read_2((sc)->sc_io_tag, (sc)->sc_io_hdl, (sc)->sc_offs+(a))
#define EOREAD4(sc, a) \
bus_space_read_4((sc)->sc_io_tag, (sc)->sc_io_hdl, (sc)->sc_offs+(a))
#define EOWRITE1(sc, a, x) \
bus_space_write_1((sc)->sc_io_tag, (sc)->sc_io_hdl, (sc)->sc_offs+(a), (x))
#define EOWRITE2(sc, a, x) \
bus_space_write_2((sc)->sc_io_tag, (sc)->sc_io_hdl, (sc)->sc_offs+(a), (x))
#define EOWRITE4(sc, a, x) \
bus_space_write_4((sc)->sc_io_tag, (sc)->sc_io_hdl, (sc)->sc_offs+(a), (x))
#ifdef USB_EHCI_BIG_ENDIAN_DESC
/*
* Handle byte order conversion between host and ``host controller''.
* Typically the latter is little-endian but some controllers require
* big-endian in which case we may need to manually swap.
*/
static __inline uint32_t
htohc32(const struct ehci_softc *sc, const uint32_t v)
{
return sc->sc_flags & EHCI_SCFLG_BIGEDESC ? htobe32(v) : htole32(v);
}
static __inline uint16_t
htohc16(const struct ehci_softc *sc, const uint16_t v)
{
return sc->sc_flags & EHCI_SCFLG_BIGEDESC ? htobe16(v) : htole16(v);
}
static __inline uint32_t
hc32toh(const struct ehci_softc *sc, const uint32_t v)
{
return sc->sc_flags & EHCI_SCFLG_BIGEDESC ? be32toh(v) : le32toh(v);
}
static __inline uint16_t
hc16toh(const struct ehci_softc *sc, const uint16_t v)
{
return sc->sc_flags & EHCI_SCFLG_BIGEDESC ? be16toh(v) : le16toh(v);
}
#else
/*
* Normal little-endian only conversion routines.
*/
static __inline uint32_t
htohc32(const struct ehci_softc *sc, const uint32_t v)
{
return htole32(v);
}
static __inline uint16_t
htohc16(const struct ehci_softc *sc, const uint16_t v)
{
return htole16(v);
}
static __inline uint32_t
hc32toh(const struct ehci_softc *sc, const uint32_t v)
{
return le32toh(v);
}
static __inline uint16_t
hc16toh(const struct ehci_softc *sc, const uint16_t v)
{
return le16toh(v);
}
#endif
usb_bus_mem_cb_t ehci_iterate_hw_softc;
usb_error_t ehci_reset(ehci_softc_t *sc);
usb_error_t ehci_init(ehci_softc_t *sc);
void ehci_detach(struct ehci_softc *sc);
void ehci_interrupt(ehci_softc_t *sc);
#endif /* _EHCI_H_ */
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