601 lines
17 KiB
C
601 lines
17 KiB
C
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/*
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* PLX NET2272 high/full speed USB device controller
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*
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* Copyright (C) 2005-2006 PLX Technology, Inc.
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* Copyright (C) 2006-2011 Analog Devices, Inc.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#ifndef __NET2272_H__
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#define __NET2272_H__
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/* Main Registers */
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#define REGADDRPTR 0x00
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#define REGDATA 0x01
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#define IRQSTAT0 0x02
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#define ENDPOINT_0_INTERRUPT 0
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#define ENDPOINT_A_INTERRUPT 1
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#define ENDPOINT_B_INTERRUPT 2
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#define ENDPOINT_C_INTERRUPT 3
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#define VIRTUALIZED_ENDPOINT_INTERRUPT 4
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#define SETUP_PACKET_INTERRUPT 5
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#define DMA_DONE_INTERRUPT 6
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#define SOF_INTERRUPT 7
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#define IRQSTAT1 0x03
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#define CONTROL_STATUS_INTERRUPT 1
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#define VBUS_INTERRUPT 2
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#define SUSPEND_REQUEST_INTERRUPT 3
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#define SUSPEND_REQUEST_CHANGE_INTERRUPT 4
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#define RESUME_INTERRUPT 5
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#define ROOT_PORT_RESET_INTERRUPT 6
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#define RESET_STATUS 7
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#define PAGESEL 0x04
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#define DMAREQ 0x1c
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#define DMA_ENDPOINT_SELECT 0
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#define DREQ_POLARITY 1
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#define DACK_POLARITY 2
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#define EOT_POLARITY 3
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#define DMA_CONTROL_DACK 4
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#define DMA_REQUEST_ENABLE 5
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#define DMA_REQUEST 6
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#define DMA_BUFFER_VALID 7
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#define SCRATCH 0x1d
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#define IRQENB0 0x20
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#define ENDPOINT_0_INTERRUPT_ENABLE 0
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#define ENDPOINT_A_INTERRUPT_ENABLE 1
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#define ENDPOINT_B_INTERRUPT_ENABLE 2
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#define ENDPOINT_C_INTERRUPT_ENABLE 3
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#define VIRTUALIZED_ENDPOINT_INTERRUPT_ENABLE 4
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#define SETUP_PACKET_INTERRUPT_ENABLE 5
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#define DMA_DONE_INTERRUPT_ENABLE 6
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#define SOF_INTERRUPT_ENABLE 7
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#define IRQENB1 0x21
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#define VBUS_INTERRUPT_ENABLE 2
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#define SUSPEND_REQUEST_INTERRUPT_ENABLE 3
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#define SUSPEND_REQUEST_CHANGE_INTERRUPT_ENABLE 4
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#define RESUME_INTERRUPT_ENABLE 5
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#define ROOT_PORT_RESET_INTERRUPT_ENABLE 6
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#define LOCCTL 0x22
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#define DATA_WIDTH 0
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#define LOCAL_CLOCK_OUTPUT 1
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#define LOCAL_CLOCK_OUTPUT_OFF 0
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#define LOCAL_CLOCK_OUTPUT_3_75MHZ 1
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#define LOCAL_CLOCK_OUTPUT_7_5MHZ 2
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#define LOCAL_CLOCK_OUTPUT_15MHZ 3
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#define LOCAL_CLOCK_OUTPUT_30MHZ 4
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#define LOCAL_CLOCK_OUTPUT_60MHZ 5
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#define DMA_SPLIT_BUS_MODE 4
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#define BYTE_SWAP 5
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#define BUFFER_CONFIGURATION 6
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#define BUFFER_CONFIGURATION_EPA512_EPB512 0
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#define BUFFER_CONFIGURATION_EPA1024_EPB512 1
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#define BUFFER_CONFIGURATION_EPA1024_EPB1024 2
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#define BUFFER_CONFIGURATION_EPA1024DB 3
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#define CHIPREV_LEGACY 0x23
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#define NET2270_LEGACY_REV 0x40
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#define LOCCTL1 0x24
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#define DMA_MODE 0
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#define SLOW_DREQ 0
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#define FAST_DREQ 1
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#define BURST_MODE 2
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#define DMA_DACK_ENABLE 2
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#define CHIPREV_2272 0x25
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#define CHIPREV_NET2272_R1 0x10
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#define CHIPREV_NET2272_R1A 0x11
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/* USB Registers */
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#define USBCTL0 0x18
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#define IO_WAKEUP_ENABLE 1
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#define USB_DETECT_ENABLE 3
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#define USB_ROOT_PORT_WAKEUP_ENABLE 5
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#define USBCTL1 0x19
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#define VBUS_PIN 0
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#define USB_FULL_SPEED 1
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#define USB_HIGH_SPEED 2
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#define GENERATE_RESUME 3
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#define VIRTUAL_ENDPOINT_ENABLE 4
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#define FRAME0 0x1a
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#define FRAME1 0x1b
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#define OURADDR 0x30
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#define FORCE_IMMEDIATE 7
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#define USBDIAG 0x31
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#define FORCE_TRANSMIT_CRC_ERROR 0
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#define PREVENT_TRANSMIT_BIT_STUFF 1
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#define FORCE_RECEIVE_ERROR 2
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#define FAST_TIMES 4
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#define USBTEST 0x32
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#define TEST_MODE_SELECT 0
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#define NORMAL_OPERATION 0
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#define TEST_J 1
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#define TEST_K 2
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#define TEST_SE0_NAK 3
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#define TEST_PACKET 4
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#define TEST_FORCE_ENABLE 5
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#define XCVRDIAG 0x33
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#define FORCE_FULL_SPEED 2
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#define FORCE_HIGH_SPEED 3
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#define OPMODE 4
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#define NORMAL_OPERATION 0
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#define NON_DRIVING 1
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#define DISABLE_BITSTUFF_AND_NRZI_ENCODE 2
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#define LINESTATE 6
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#define SE0_STATE 0
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#define J_STATE 1
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#define K_STATE 2
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#define SE1_STATE 3
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#define VIRTOUT0 0x34
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#define VIRTOUT1 0x35
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#define VIRTIN0 0x36
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#define VIRTIN1 0x37
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#define SETUP0 0x40
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#define SETUP1 0x41
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#define SETUP2 0x42
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#define SETUP3 0x43
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#define SETUP4 0x44
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#define SETUP5 0x45
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#define SETUP6 0x46
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#define SETUP7 0x47
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/* Endpoint Registers (Paged via PAGESEL) */
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#define EP_DATA 0x05
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#define EP_STAT0 0x06
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#define DATA_IN_TOKEN_INTERRUPT 0
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#define DATA_OUT_TOKEN_INTERRUPT 1
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#define DATA_PACKET_TRANSMITTED_INTERRUPT 2
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#define DATA_PACKET_RECEIVED_INTERRUPT 3
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#define SHORT_PACKET_TRANSFERRED_INTERRUPT 4
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#define NAK_OUT_PACKETS 5
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#define BUFFER_EMPTY 6
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#define BUFFER_FULL 7
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#define EP_STAT1 0x07
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#define TIMEOUT 0
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#define USB_OUT_ACK_SENT 1
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#define USB_OUT_NAK_SENT 2
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#define USB_IN_ACK_RCVD 3
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#define USB_IN_NAK_SENT 4
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#define USB_STALL_SENT 5
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#define LOCAL_OUT_ZLP 6
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#define BUFFER_FLUSH 7
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#define EP_TRANSFER0 0x08
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#define EP_TRANSFER1 0x09
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#define EP_TRANSFER2 0x0a
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#define EP_IRQENB 0x0b
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#define DATA_IN_TOKEN_INTERRUPT_ENABLE 0
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#define DATA_OUT_TOKEN_INTERRUPT_ENABLE 1
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#define DATA_PACKET_TRANSMITTED_INTERRUPT_ENABLE 2
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#define DATA_PACKET_RECEIVED_INTERRUPT_ENABLE 3
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#define SHORT_PACKET_TRANSFERRED_INTERRUPT_ENABLE 4
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#define EP_AVAIL0 0x0c
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#define EP_AVAIL1 0x0d
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#define EP_RSPCLR 0x0e
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#define EP_RSPSET 0x0f
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#define ENDPOINT_HALT 0
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#define ENDPOINT_TOGGLE 1
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#define NAK_OUT_PACKETS_MODE 2
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#define CONTROL_STATUS_PHASE_HANDSHAKE 3
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#define INTERRUPT_MODE 4
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#define AUTOVALIDATE 5
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#define HIDE_STATUS_PHASE 6
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#define ALT_NAK_OUT_PACKETS 7
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#define EP_MAXPKT0 0x28
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#define EP_MAXPKT1 0x29
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#define ADDITIONAL_TRANSACTION_OPPORTUNITIES 3
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#define NONE_ADDITIONAL_TRANSACTION 0
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#define ONE_ADDITIONAL_TRANSACTION 1
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#define TWO_ADDITIONAL_TRANSACTION 2
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#define EP_CFG 0x2a
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#define ENDPOINT_NUMBER 0
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#define ENDPOINT_DIRECTION 4
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#define ENDPOINT_TYPE 5
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#define ENDPOINT_ENABLE 7
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#define EP_HBW 0x2b
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#define HIGH_BANDWIDTH_OUT_TRANSACTION_PID 0
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#define DATA0_PID 0
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#define DATA1_PID 1
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#define DATA2_PID 2
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#define MDATA_PID 3
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#define EP_BUFF_STATES 0x2c
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#define BUFFER_A_STATE 0
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#define BUFFER_B_STATE 2
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#define BUFF_FREE 0
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#define BUFF_VALID 1
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#define BUFF_LCL 2
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#define BUFF_USB 3
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/*---------------------------------------------------------------------------*/
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#define PCI_DEVICE_ID_RDK1 0x9054
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/* PCI-RDK EPLD Registers */
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#define RDK_EPLD_IO_REGISTER1 0x00000000
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#define RDK_EPLD_USB_RESET 0
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#define RDK_EPLD_USB_POWERDOWN 1
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#define RDK_EPLD_USB_WAKEUP 2
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#define RDK_EPLD_USB_EOT 3
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#define RDK_EPLD_DPPULL 4
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#define RDK_EPLD_IO_REGISTER2 0x00000004
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#define RDK_EPLD_BUSWIDTH 0
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#define RDK_EPLD_USER 2
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#define RDK_EPLD_RESET_INTERRUPT_ENABLE 3
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#define RDK_EPLD_DMA_TIMEOUT_ENABLE 4
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#define RDK_EPLD_STATUS_REGISTER 0x00000008
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#define RDK_EPLD_USB_LRESET 0
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#define RDK_EPLD_REVISION_REGISTER 0x0000000c
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/* PCI-RDK PLX 9054 Registers */
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#define INTCSR 0x68
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#define PCI_INTERRUPT_ENABLE 8
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#define LOCAL_INTERRUPT_INPUT_ENABLE 11
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#define LOCAL_INPUT_INTERRUPT_ACTIVE 15
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#define LOCAL_DMA_CHANNEL_0_INTERRUPT_ENABLE 18
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#define LOCAL_DMA_CHANNEL_1_INTERRUPT_ENABLE 19
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#define DMA_CHANNEL_0_INTERRUPT_ACTIVE 21
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#define DMA_CHANNEL_1_INTERRUPT_ACTIVE 22
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#define CNTRL 0x6C
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#define RELOAD_CONFIGURATION_REGISTERS 29
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#define PCI_ADAPTER_SOFTWARE_RESET 30
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#define DMAMODE0 0x80
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#define LOCAL_BUS_WIDTH 0
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#define INTERNAL_WAIT_STATES 2
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#define TA_READY_INPUT_ENABLE 6
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#define LOCAL_BURST_ENABLE 8
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#define SCATTER_GATHER_MODE 9
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#define DONE_INTERRUPT_ENABLE 10
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#define LOCAL_ADDRESSING_MODE 11
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#define DEMAND_MODE 12
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#define DMA_EOT_ENABLE 14
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#define FAST_SLOW_TERMINATE_MODE_SELECT 15
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#define DMA_CHANNEL_INTERRUPT_SELECT 17
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#define DMAPADR0 0x84
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#define DMALADR0 0x88
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#define DMASIZ0 0x8c
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#define DMADPR0 0x90
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#define DESCRIPTOR_LOCATION 0
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#define END_OF_CHAIN 1
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#define INTERRUPT_AFTER_TERMINAL_COUNT 2
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#define DIRECTION_OF_TRANSFER 3
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#define DMACSR0 0xa8
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#define CHANNEL_ENABLE 0
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#define CHANNEL_START 1
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#define CHANNEL_ABORT 2
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#define CHANNEL_CLEAR_INTERRUPT 3
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#define CHANNEL_DONE 4
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#define DMATHR 0xb0
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#define LBRD1 0xf8
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#define MEMORY_SPACE_LOCAL_BUS_WIDTH 0
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#define W8_BIT 0
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#define W16_BIT 1
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/* Special OR'ing of INTCSR bits */
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#define LOCAL_INTERRUPT_TEST \
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((1 << LOCAL_INPUT_INTERRUPT_ACTIVE) | \
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(1 << LOCAL_INTERRUPT_INPUT_ENABLE))
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#define DMA_CHANNEL_0_TEST \
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((1 << DMA_CHANNEL_0_INTERRUPT_ACTIVE) | \
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(1 << LOCAL_DMA_CHANNEL_0_INTERRUPT_ENABLE))
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#define DMA_CHANNEL_1_TEST \
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((1 << DMA_CHANNEL_1_INTERRUPT_ACTIVE) | \
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(1 << LOCAL_DMA_CHANNEL_1_INTERRUPT_ENABLE))
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/* EPLD Registers */
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#define RDK_EPLD_IO_REGISTER1 0x00000000
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#define RDK_EPLD_USB_RESET 0
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#define RDK_EPLD_USB_POWERDOWN 1
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#define RDK_EPLD_USB_WAKEUP 2
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#define RDK_EPLD_USB_EOT 3
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#define RDK_EPLD_DPPULL 4
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#define RDK_EPLD_IO_REGISTER2 0x00000004
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#define RDK_EPLD_BUSWIDTH 0
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#define RDK_EPLD_USER 2
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#define RDK_EPLD_RESET_INTERRUPT_ENABLE 3
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#define RDK_EPLD_DMA_TIMEOUT_ENABLE 4
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#define RDK_EPLD_STATUS_REGISTER 0x00000008
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#define RDK_EPLD_USB_LRESET 0
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#define RDK_EPLD_REVISION_REGISTER 0x0000000c
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#define EPLD_IO_CONTROL_REGISTER 0x400
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#define NET2272_RESET 0
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#define BUSWIDTH 1
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#define MPX_MODE 3
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#define USER 4
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#define DMA_TIMEOUT_ENABLE 5
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#define DMA_CTL_DACK 6
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#define EPLD_DMA_ENABLE 7
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#define EPLD_DMA_CONTROL_REGISTER 0x800
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#define SPLIT_DMA_MODE 0
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#define SPLIT_DMA_DIRECTION 1
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#define SPLIT_DMA_ENABLE 2
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#define SPLIT_DMA_INTERRUPT_ENABLE 3
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#define SPLIT_DMA_INTERRUPT 4
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#define EPLD_DMA_MODE 5
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#define EPLD_DMA_CONTROLLER_ENABLE 7
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#define SPLIT_DMA_ADDRESS_LOW 0xc00
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#define SPLIT_DMA_ADDRESS_HIGH 0x1000
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#define SPLIT_DMA_BYTE_COUNT_LOW 0x1400
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#define SPLIT_DMA_BYTE_COUNT_HIGH 0x1800
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#define EPLD_REVISION_REGISTER 0x1c00
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#define SPLIT_DMA_RAM 0x4000
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#define DMA_RAM_SIZE 0x1000
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/*---------------------------------------------------------------------------*/
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#define PCI_DEVICE_ID_RDK2 0x3272
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/* PCI-RDK version 2 registers */
|
||
|
|
|
||
|
|
/* Main Control Registers */
|
||
|
|
|
||
|
|
#define RDK2_IRQENB 0x00
|
||
|
|
#define RDK2_IRQSTAT 0x04
|
||
|
|
#define PB7 23
|
||
|
|
#define PB6 22
|
||
|
|
#define PB5 21
|
||
|
|
#define PB4 20
|
||
|
|
#define PB3 19
|
||
|
|
#define PB2 18
|
||
|
|
#define PB1 17
|
||
|
|
#define PB0 16
|
||
|
|
#define GP3 23
|
||
|
|
#define GP2 23
|
||
|
|
#define GP1 23
|
||
|
|
#define GP0 23
|
||
|
|
#define DMA_RETRY_ABORT 6
|
||
|
|
#define DMA_PAUSE_DONE 5
|
||
|
|
#define DMA_ABORT_DONE 4
|
||
|
|
#define DMA_OUT_FIFO_TRANSFER_DONE 3
|
||
|
|
#define DMA_LOCAL_DONE 2
|
||
|
|
#define DMA_PCI_DONE 1
|
||
|
|
#define NET2272_PCI_IRQ 0
|
||
|
|
|
||
|
|
#define RDK2_LOCCTLRDK 0x08
|
||
|
|
#define CHIP_RESET 3
|
||
|
|
#define SPLIT_DMA 2
|
||
|
|
#define MULTIPLEX_MODE 1
|
||
|
|
#define BUS_WIDTH 0
|
||
|
|
|
||
|
|
#define RDK2_GPIOCTL 0x10
|
||
|
|
#define GP3_OUT_ENABLE 7
|
||
|
|
#define GP2_OUT_ENABLE 6
|
||
|
|
#define GP1_OUT_ENABLE 5
|
||
|
|
#define GP0_OUT_ENABLE 4
|
||
|
|
#define GP3_DATA 3
|
||
|
|
#define GP2_DATA 2
|
||
|
|
#define GP1_DATA 1
|
||
|
|
#define GP0_DATA 0
|
||
|
|
|
||
|
|
#define RDK2_LEDSW 0x14
|
||
|
|
#define LED3 27
|
||
|
|
#define LED2 26
|
||
|
|
#define LED1 25
|
||
|
|
#define LED0 24
|
||
|
|
#define PBUTTON 16
|
||
|
|
#define DIPSW 0
|
||
|
|
|
||
|
|
#define RDK2_DIAG 0x18
|
||
|
|
#define RDK2_FAST_TIMES 2
|
||
|
|
#define FORCE_PCI_SERR 1
|
||
|
|
#define FORCE_PCI_INT 0
|
||
|
|
#define RDK2_FPGAREV 0x1C
|
||
|
|
|
||
|
|
/* Dma Control registers */
|
||
|
|
#define RDK2_DMACTL 0x80
|
||
|
|
#define ADDR_HOLD 24
|
||
|
|
#define RETRY_COUNT 16 /* 23:16 */
|
||
|
|
#define FIFO_THRESHOLD 11 /* 15:11 */
|
||
|
|
#define MEM_WRITE_INVALIDATE 10
|
||
|
|
#define READ_MULTIPLE 9
|
||
|
|
#define READ_LINE 8
|
||
|
|
#define RDK2_DMA_MODE 6 /* 7:6 */
|
||
|
|
#define CONTROL_DACK 5
|
||
|
|
#define EOT_ENABLE 4
|
||
|
|
#define EOT_POLARITY 3
|
||
|
|
#define DACK_POLARITY 2
|
||
|
|
#define DREQ_POLARITY 1
|
||
|
|
#define DMA_ENABLE 0
|
||
|
|
|
||
|
|
#define RDK2_DMASTAT 0x84
|
||
|
|
#define GATHER_COUNT 12 /* 14:12 */
|
||
|
|
#define FIFO_COUNT 6 /* 11:6 */
|
||
|
|
#define FIFO_FLUSH 5
|
||
|
|
#define FIFO_TRANSFER 4
|
||
|
|
#define PAUSE_DONE 3
|
||
|
|
#define ABORT_DONE 2
|
||
|
|
#define DMA_ABORT 1
|
||
|
|
#define DMA_START 0
|
||
|
|
|
||
|
|
#define RDK2_DMAPCICOUNT 0x88
|
||
|
|
#define DMA_DIRECTION 31
|
||
|
|
#define DMA_PCI_BYTE_COUNT 0 /* 0:23 */
|
||
|
|
|
||
|
|
#define RDK2_DMALOCCOUNT 0x8C /* 0:23 dma local byte count */
|
||
|
|
|
||
|
|
#define RDK2_DMAADDR 0x90 /* 2:31 PCI bus starting address */
|
||
|
|
|
||
|
|
/*---------------------------------------------------------------------------*/
|
||
|
|
|
||
|
|
#define REG_INDEXED_THRESHOLD (1 << 5)
|
||
|
|
|
||
|
|
/* DRIVER DATA STRUCTURES and UTILITIES */
|
||
|
|
struct net2272_ep {
|
||
|
|
struct usb_ep ep;
|
||
|
|
struct net2272 *dev;
|
||
|
|
unsigned long irqs;
|
||
|
|
|
||
|
|
/* analogous to a host-side qh */
|
||
|
|
struct list_head queue;
|
||
|
|
const struct usb_endpoint_descriptor *desc;
|
||
|
|
unsigned num:8,
|
||
|
|
fifo_size:12,
|
||
|
|
stopped:1,
|
||
|
|
wedged:1,
|
||
|
|
is_in:1,
|
||
|
|
is_iso:1,
|
||
|
|
dma:1,
|
||
|
|
not_empty:1;
|
||
|
|
};
|
||
|
|
|
||
|
|
struct net2272 {
|
||
|
|
/* each device provides one gadget, several endpoints */
|
||
|
|
struct usb_gadget gadget;
|
||
|
|
struct device *dev;
|
||
|
|
unsigned short dev_id;
|
||
|
|
|
||
|
|
spinlock_t lock;
|
||
|
|
struct net2272_ep ep[4];
|
||
|
|
struct usb_gadget_driver *driver;
|
||
|
|
unsigned protocol_stall:1,
|
||
|
|
softconnect:1,
|
||
|
|
wakeup:1,
|
||
|
|
dma_eot_polarity:1,
|
||
|
|
dma_dack_polarity:1,
|
||
|
|
dma_dreq_polarity:1,
|
||
|
|
dma_busy:1;
|
||
|
|
u16 chiprev;
|
||
|
|
u8 pagesel;
|
||
|
|
|
||
|
|
unsigned int irq;
|
||
|
|
unsigned short fifo_mode;
|
||
|
|
|
||
|
|
unsigned int base_shift;
|
||
|
|
u16 __iomem *base_addr;
|
||
|
|
union {
|
||
|
|
#ifdef CONFIG_PCI
|
||
|
|
struct {
|
||
|
|
void __iomem *plx9054_base_addr;
|
||
|
|
void __iomem *epld_base_addr;
|
||
|
|
} rdk1;
|
||
|
|
struct {
|
||
|
|
/* Bar0, Bar1 is base_addr both mem-mapped */
|
||
|
|
void __iomem *fpga_base_addr;
|
||
|
|
} rdk2;
|
||
|
|
#endif
|
||
|
|
};
|
||
|
|
};
|
||
|
|
|
||
|
|
static void __iomem *
|
||
|
|
net2272_reg_addr(struct net2272 *dev, unsigned int reg)
|
||
|
|
{
|
||
|
|
return dev->base_addr + (reg << dev->base_shift);
|
||
|
|
}
|
||
|
|
|
||
|
|
static void
|
||
|
|
net2272_write(struct net2272 *dev, unsigned int reg, u8 value)
|
||
|
|
{
|
||
|
|
if (reg >= REG_INDEXED_THRESHOLD) {
|
||
|
|
/*
|
||
|
|
* Indexed register; use REGADDRPTR/REGDATA
|
||
|
|
* - Save and restore REGADDRPTR. This prevents REGADDRPTR from
|
||
|
|
* changes between other code sections, but it is time consuming.
|
||
|
|
* - Performance tips: either do not save and restore REGADDRPTR (if it
|
||
|
|
* is safe) or do save/restore operations only in critical sections.
|
||
|
|
u8 tmp = readb(dev->base_addr + REGADDRPTR);
|
||
|
|
*/
|
||
|
|
writeb((u8)reg, net2272_reg_addr(dev, REGADDRPTR));
|
||
|
|
writeb(value, net2272_reg_addr(dev, REGDATA));
|
||
|
|
/* writeb(tmp, net2272_reg_addr(dev, REGADDRPTR)); */
|
||
|
|
} else
|
||
|
|
writeb(value, net2272_reg_addr(dev, reg));
|
||
|
|
}
|
||
|
|
|
||
|
|
static u8
|
||
|
|
net2272_read(struct net2272 *dev, unsigned int reg)
|
||
|
|
{
|
||
|
|
u8 ret;
|
||
|
|
|
||
|
|
if (reg >= REG_INDEXED_THRESHOLD) {
|
||
|
|
/*
|
||
|
|
* Indexed register; use REGADDRPTR/REGDATA
|
||
|
|
* - Save and restore REGADDRPTR. This prevents REGADDRPTR from
|
||
|
|
* changes between other code sections, but it is time consuming.
|
||
|
|
* - Performance tips: either do not save and restore REGADDRPTR (if it
|
||
|
|
* is safe) or do save/restore operations only in critical sections.
|
||
|
|
u8 tmp = readb(dev->base_addr + REGADDRPTR);
|
||
|
|
*/
|
||
|
|
writeb((u8)reg, net2272_reg_addr(dev, REGADDRPTR));
|
||
|
|
ret = readb(net2272_reg_addr(dev, REGDATA));
|
||
|
|
/* writeb(tmp, net2272_reg_addr(dev, REGADDRPTR)); */
|
||
|
|
} else
|
||
|
|
ret = readb(net2272_reg_addr(dev, reg));
|
||
|
|
|
||
|
|
return ret;
|
||
|
|
}
|
||
|
|
|
||
|
|
static void
|
||
|
|
net2272_ep_write(struct net2272_ep *ep, unsigned int reg, u8 value)
|
||
|
|
{
|
||
|
|
struct net2272 *dev = ep->dev;
|
||
|
|
|
||
|
|
if (dev->pagesel != ep->num) {
|
||
|
|
net2272_write(dev, PAGESEL, ep->num);
|
||
|
|
dev->pagesel = ep->num;
|
||
|
|
}
|
||
|
|
net2272_write(dev, reg, value);
|
||
|
|
}
|
||
|
|
|
||
|
|
static u8
|
||
|
|
net2272_ep_read(struct net2272_ep *ep, unsigned int reg)
|
||
|
|
{
|
||
|
|
struct net2272 *dev = ep->dev;
|
||
|
|
|
||
|
|
if (dev->pagesel != ep->num) {
|
||
|
|
net2272_write(dev, PAGESEL, ep->num);
|
||
|
|
dev->pagesel = ep->num;
|
||
|
|
}
|
||
|
|
return net2272_read(dev, reg);
|
||
|
|
}
|
||
|
|
|
||
|
|
static void allow_status(struct net2272_ep *ep)
|
||
|
|
{
|
||
|
|
/* ep0 only */
|
||
|
|
net2272_ep_write(ep, EP_RSPCLR,
|
||
|
|
(1 << CONTROL_STATUS_PHASE_HANDSHAKE) |
|
||
|
|
(1 << ALT_NAK_OUT_PACKETS) |
|
||
|
|
(1 << NAK_OUT_PACKETS_MODE));
|
||
|
|
ep->stopped = 1;
|
||
|
|
}
|
||
|
|
|
||
|
|
static void set_halt(struct net2272_ep *ep)
|
||
|
|
{
|
||
|
|
/* ep0 and bulk/intr endpoints */
|
||
|
|
net2272_ep_write(ep, EP_RSPCLR, 1 << CONTROL_STATUS_PHASE_HANDSHAKE);
|
||
|
|
net2272_ep_write(ep, EP_RSPSET, 1 << ENDPOINT_HALT);
|
||
|
|
}
|
||
|
|
|
||
|
|
static void clear_halt(struct net2272_ep *ep)
|
||
|
|
{
|
||
|
|
/* ep0 and bulk/intr endpoints */
|
||
|
|
net2272_ep_write(ep, EP_RSPCLR,
|
||
|
|
(1 << ENDPOINT_HALT) | (1 << ENDPOINT_TOGGLE));
|
||
|
|
}
|
||
|
|
|
||
|
|
/* count (<= 4) bytes in the next fifo write will be valid */
|
||
|
|
static void set_fifo_bytecount(struct net2272_ep *ep, unsigned count)
|
||
|
|
{
|
||
|
|
/* net2272_ep_write will truncate to u8 for us */
|
||
|
|
net2272_ep_write(ep, EP_TRANSFER2, count >> 16);
|
||
|
|
net2272_ep_write(ep, EP_TRANSFER1, count >> 8);
|
||
|
|
net2272_ep_write(ep, EP_TRANSFER0, count);
|
||
|
|
}
|
||
|
|
|
||
|
|
struct net2272_request {
|
||
|
|
struct usb_request req;
|
||
|
|
struct list_head queue;
|
||
|
|
unsigned mapped:1,
|
||
|
|
valid:1;
|
||
|
|
};
|
||
|
|
|
||
|
|
#endif
|