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freebsd-skq/sys/dev/usb/controller/at91dci.h
hselasky 1d56927a73 - Implement fast interrupt handler to save CPU usage. 
- Cleanup some register reads and writes to use existing register
  access macros.
- Ensure code which only applies to the control endpoint is not run
  for other endpoints in the data transfer path.

MFC after:	3 days
2014-08-05 18:48:12 +00:00

244 lines
8.5 KiB
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/* $FreeBSD$ */
/*-
* Copyright (c) 2006 ATMEL
* Copyright (c) 2007 Hans Petter Selasky <hselasky@FreeBSD.org>
* All rights reserved.
*
* 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 AUTHOR 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 AUTHOR 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.
*/
/*
* USB Device Port (UDP) register definition, based on "AT91RM9200.h" provided
* by ATMEL.
*/
#ifndef _AT9100_DCI_H_
#define _AT9100_DCI_H_
#define AT91_MAX_DEVICES (USB_MIN_DEVICES + 1)
#define AT91_UDP_FRM 0x00 /* Frame number register */
#define AT91_UDP_FRM_MASK (0x7FF << 0) /* Frame Number as Defined in
* the Packet Field Formats */
#define AT91_UDP_FRM_ERR (0x1 << 16) /* Frame Error */
#define AT91_UDP_FRM_OK (0x1 << 17) /* Frame OK */
#define AT91_UDP_GSTATE 0x04 /* Global state register */
#define AT91_UDP_GSTATE_ADDR (0x1 << 0) /* Addressed state */
#define AT91_UDP_GSTATE_CONFG (0x1 << 1) /* Configured */
#define AT91_UDP_GSTATE_ESR (0x1 << 2) /* Enable Send Resume */
#define AT91_UDP_GSTATE_RSM (0x1 << 3) /* A Resume Has Been Sent to
* the Host */
#define AT91_UDP_GSTATE_RMW (0x1 << 4) /* Remote Wake Up Enable */
#define AT91_UDP_FADDR 0x08 /* Function Address Register */
#define AT91_UDP_FADDR_MASK (0x7F << 0)/* Function Address Mask */
#define AT91_UDP_FADDR_EN (0x1 << 8)/* Function Enable */
#define AT91_UDP_RES0 0x0C /* Reserved 0 */
#define AT91_UDP_IER 0x10 /* Interrupt Enable Register */
#define AT91_UDP_IDR 0x14 /* Interrupt Disable Register */
#define AT91_UDP_IMR 0x18 /* Interrupt Mask Register */
#define AT91_UDP_ISR 0x1C /* Interrupt Status Register */
#define AT91_UDP_ICR 0x20 /* Interrupt Clear Register */
#define AT91_UDP_INT_EP(n) (0x1 <<(n))/* Endpoint "n" Interrupt */
#define AT91_UDP_INT_RXSUSP (0x1 << 8)/* USB Suspend Interrupt */
#define AT91_UDP_INT_RXRSM (0x1 << 9)/* USB Resume Interrupt */
#define AT91_UDP_INT_EXTRSM (0x1 << 10)/* USB External Resume Interrupt */
#define AT91_UDP_INT_SOFINT (0x1 << 11)/* USB Start Of frame Interrupt */
#define AT91_UDP_INT_END_BR (0x1 << 12)/* USB End Of Bus Reset Interrupt */
#define AT91_UDP_INT_WAKEUP (0x1 << 13)/* USB Resume Interrupt */
#define AT91_UDP_INT_BUS \
(AT91_UDP_INT_RXSUSP|AT91_UDP_INT_RXRSM| \
AT91_UDP_INT_END_BR)
#define AT91_UDP_INT_EPS \
(AT91_UDP_INT_EP(0)|AT91_UDP_INT_EP(1)| \
AT91_UDP_INT_EP(2)|AT91_UDP_INT_EP(3)| \
AT91_UDP_INT_EP(4)|AT91_UDP_INT_EP(5))
#define AT91_UDP_INT_DEFAULT \
(AT91_UDP_INT_EPS|AT91_UDP_INT_BUS)
#define AT91_UDP_RES1 0x24 /* Reserved 1 */
#define AT91_UDP_RST 0x28 /* Reset Endpoint Register */
#define AT91_UDP_RST_EP(n) (0x1 << (n))/* Reset Endpoint "n" */
#define AT91_UDP_RES2 0x2C /* Reserved 2 */
#define AT91_UDP_CSR(n) (0x30 + (4*(n)))/* Endpoint Control and Status
* Register */
#define AT91_UDP_CSR_TXCOMP (0x1 << 0) /* Generates an IN packet with data
* previously written in the DPR */
#define AT91_UDP_CSR_RX_DATA_BK0 (0x1 << 1) /* Receive Data Bank 0 */
#define AT91_UDP_CSR_RXSETUP (0x1 << 2) /* Sends STALL to the Host
* (Control endpoints) */
#define AT91_UDP_CSR_ISOERROR (0x1 << 3) /* Isochronous error
* (Isochronous endpoints) */
#define AT91_UDP_CSR_STALLSENT (0x1 << 3) /* Stall sent (Control, bulk,
* interrupt endpoints) */
#define AT91_UDP_CSR_TXPKTRDY (0x1 << 4) /* Transmit Packet Ready */
#define AT91_UDP_CSR_FORCESTALL (0x1 << 5) /* Force Stall (used by
* Control, Bulk and
* Isochronous endpoints). */
#define AT91_UDP_CSR_RX_DATA_BK1 (0x1 << 6) /* Receive Data Bank 1 (only
* used by endpoints with
* ping-pong attributes). */
#define AT91_UDP_CSR_DIR (0x1 << 7) /* Transfer Direction */
#define AT91_UDP_CSR_ET_MASK (0x7 << 8) /* Endpoint transfer type mask */
#define AT91_UDP_CSR_ET_CTRL (0x0 << 8) /* Control IN+OUT */
#define AT91_UDP_CSR_ET_ISO (0x1 << 8) /* Isochronous */
#define AT91_UDP_CSR_ET_BULK (0x2 << 8) /* Bulk */
#define AT91_UDP_CSR_ET_INT (0x3 << 8) /* Interrupt */
#define AT91_UDP_CSR_ET_DIR_OUT (0x0 << 8) /* OUT tokens */
#define AT91_UDP_CSR_ET_DIR_IN (0x4 << 8) /* IN tokens */
#define AT91_UDP_CSR_DTGLE (0x1 << 11) /* Data Toggle */
#define AT91_UDP_CSR_EPEDS (0x1 << 15) /* Endpoint Enable Disable */
#define AT91_UDP_CSR_RXBYTECNT (0x7FF << 16) /* Number Of Bytes Available
* in the FIFO */
#define AT91_UDP_FDR(n) (0x50 + (4*(n)))/* Endpoint FIFO Data Register */
#define AT91_UDP_RES3 0x70 /* Reserved 3 */
#define AT91_UDP_TXVC 0x74 /* Transceiver Control Register */
#define AT91_UDP_TXVC_DIS (0x1 << 8)
#define AT91_UDP_EP_MAX 6 /* maximum number of endpoints
* supported */
#define AT91_UDP_READ_4(sc, reg) \
bus_space_read_4((sc)->sc_io_tag, (sc)->sc_io_hdl, reg)
#define AT91_UDP_WRITE_4(sc, reg, data) \
bus_space_write_4((sc)->sc_io_tag, (sc)->sc_io_hdl, reg, data)
struct at91dci_td;
struct at91dci_softc;
typedef uint8_t (at91dci_cmd_t)(struct at91dci_softc *sc, struct at91dci_td *td);
struct at91dci_td {
struct at91dci_td *obj_next;
at91dci_cmd_t *func;
struct usb_page_cache *pc;
uint32_t offset;
uint32_t remainder;
uint16_t max_packet_size;
uint8_t status_reg;
uint8_t fifo_reg;
uint8_t fifo_bank:1;
uint8_t error:1;
uint8_t alt_next:1;
uint8_t short_pkt:1;
uint8_t support_multi_buffer:1;
uint8_t did_stall:1;
};
struct at91dci_std_temp {
at91dci_cmd_t *func;
struct usb_page_cache *pc;
struct at91dci_td *td;
struct at91dci_td *td_next;
uint32_t len;
uint32_t offset;
uint16_t max_frame_size;
uint8_t short_pkt;
/*
* short_pkt = 0: transfer should be short terminated
* short_pkt = 1: transfer should not be short terminated
*/
uint8_t setup_alt_next;
uint8_t did_stall;
};
struct at91dci_config_desc {
struct usb_config_descriptor confd;
struct usb_interface_descriptor ifcd;
struct usb_endpoint_descriptor endpd;
} __packed;
union at91dci_hub_temp {
uWord wValue;
struct usb_port_status ps;
};
struct at91dci_ep_flags {
uint8_t fifo_bank:1; /* hardware specific */
};
struct at91dci_flags {
uint8_t change_connect:1;
uint8_t change_suspend:1;
uint8_t status_suspend:1; /* set if suspended */
uint8_t status_vbus:1; /* set if present */
uint8_t status_bus_reset:1; /* set if reset complete */
uint8_t remote_wakeup:1;
uint8_t self_powered:1;
uint8_t clocks_off:1;
uint8_t port_powered:1;
uint8_t port_enabled:1;
uint8_t d_pulled_up:1;
};
struct at91dci_softc {
struct usb_bus sc_bus;
union at91dci_hub_temp sc_hub_temp;
struct usb_device *sc_devices[AT91_MAX_DEVICES];
struct resource *sc_io_res;
struct resource *sc_irq_res;
void *sc_intr_hdl;
bus_size_t sc_io_size;
bus_space_tag_t sc_io_tag;
bus_space_handle_t sc_io_hdl;
void (*sc_clocks_on) (void *arg);
void (*sc_clocks_off) (void *arg);
void *sc_clocks_arg;
void (*sc_pull_up) (void *arg);
void (*sc_pull_down) (void *arg);
void *sc_pull_arg;
uint32_t sc_xfer_complete;
uint8_t sc_rt_addr; /* root HUB address */
uint8_t sc_dv_addr; /* device address */
uint8_t sc_conf; /* root HUB config */
uint8_t sc_hub_idata[1];
struct at91dci_flags sc_flags;
struct at91dci_ep_flags sc_ep_flags[AT91_UDP_EP_MAX];
};
/* prototypes */
usb_error_t at91dci_init(struct at91dci_softc *sc);
void at91dci_uninit(struct at91dci_softc *sc);
driver_filter_t at91dci_filter_interrupt;
driver_intr_t at91dci_interrupt;
void at91dci_vbus_interrupt(struct at91dci_softc *sc, uint8_t is_on);
#endif /* _AT9100_DCI_H_ */
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