| /* |
| * PLX NET2272 high/full speed USB device controller |
| * |
| * Copyright (C) 2005-2006 PLX Technology, Inc. |
| * Copyright (C) 2006-2011 Analog Devices, Inc. |
| * |
| * 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 |
| */ |
| |
| #ifndef __NET2272_H__ |
| #define __NET2272_H__ |
| |
| /* Main Registers */ |
| #define REGADDRPTR 0x00 |
| #define REGDATA 0x01 |
| #define IRQSTAT0 0x02 |
| #define ENDPOINT_0_INTERRUPT 0 |
| #define ENDPOINT_A_INTERRUPT 1 |
| #define ENDPOINT_B_INTERRUPT 2 |
| #define ENDPOINT_C_INTERRUPT 3 |
| #define VIRTUALIZED_ENDPOINT_INTERRUPT 4 |
| #define SETUP_PACKET_INTERRUPT 5 |
| #define DMA_DONE_INTERRUPT 6 |
| #define SOF_INTERRUPT 7 |
| #define IRQSTAT1 0x03 |
| #define CONTROL_STATUS_INTERRUPT 1 |
| #define VBUS_INTERRUPT 2 |
| #define SUSPEND_REQUEST_INTERRUPT 3 |
| #define SUSPEND_REQUEST_CHANGE_INTERRUPT 4 |
| #define RESUME_INTERRUPT 5 |
| #define ROOT_PORT_RESET_INTERRUPT 6 |
| #define RESET_STATUS 7 |
| #define PAGESEL 0x04 |
| #define DMAREQ 0x1c |
| #define DMA_ENDPOINT_SELECT 0 |
| #define DREQ_POLARITY 1 |
| #define DACK_POLARITY 2 |
| #define EOT_POLARITY 3 |
| #define DMA_CONTROL_DACK 4 |
| #define DMA_REQUEST_ENABLE 5 |
| #define DMA_REQUEST 6 |
| #define DMA_BUFFER_VALID 7 |
| #define SCRATCH 0x1d |
| #define IRQENB0 0x20 |
| #define ENDPOINT_0_INTERRUPT_ENABLE 0 |
| #define ENDPOINT_A_INTERRUPT_ENABLE 1 |
| #define ENDPOINT_B_INTERRUPT_ENABLE 2 |
| #define ENDPOINT_C_INTERRUPT_ENABLE 3 |
| #define VIRTUALIZED_ENDPOINT_INTERRUPT_ENABLE 4 |
| #define SETUP_PACKET_INTERRUPT_ENABLE 5 |
| #define DMA_DONE_INTERRUPT_ENABLE 6 |
| #define SOF_INTERRUPT_ENABLE 7 |
| #define IRQENB1 0x21 |
| #define VBUS_INTERRUPT_ENABLE 2 |
| #define SUSPEND_REQUEST_INTERRUPT_ENABLE 3 |
| #define SUSPEND_REQUEST_CHANGE_INTERRUPT_ENABLE 4 |
| #define RESUME_INTERRUPT_ENABLE 5 |
| #define ROOT_PORT_RESET_INTERRUPT_ENABLE 6 |
| #define LOCCTL 0x22 |
| #define DATA_WIDTH 0 |
| #define LOCAL_CLOCK_OUTPUT 1 |
| #define LOCAL_CLOCK_OUTPUT_OFF 0 |
| #define LOCAL_CLOCK_OUTPUT_3_75MHZ 1 |
| #define LOCAL_CLOCK_OUTPUT_7_5MHZ 2 |
| #define LOCAL_CLOCK_OUTPUT_15MHZ 3 |
| #define LOCAL_CLOCK_OUTPUT_30MHZ 4 |
| #define LOCAL_CLOCK_OUTPUT_60MHZ 5 |
| #define DMA_SPLIT_BUS_MODE 4 |
| #define BYTE_SWAP 5 |
| #define BUFFER_CONFIGURATION 6 |
| #define BUFFER_CONFIGURATION_EPA512_EPB512 0 |
| #define BUFFER_CONFIGURATION_EPA1024_EPB512 1 |
| #define BUFFER_CONFIGURATION_EPA1024_EPB1024 2 |
| #define BUFFER_CONFIGURATION_EPA1024DB 3 |
| #define CHIPREV_LEGACY 0x23 |
| #define NET2270_LEGACY_REV 0x40 |
| #define LOCCTL1 0x24 |
| #define DMA_MODE 0 |
| #define SLOW_DREQ 0 |
| #define FAST_DREQ 1 |
| #define BURST_MODE 2 |
| #define DMA_DACK_ENABLE 2 |
| #define CHIPREV_2272 0x25 |
| #define CHIPREV_NET2272_R1 0x10 |
| #define CHIPREV_NET2272_R1A 0x11 |
| /* USB Registers */ |
| #define USBCTL0 0x18 |
| #define IO_WAKEUP_ENABLE 1 |
| #define USB_DETECT_ENABLE 3 |
| #define USB_ROOT_PORT_WAKEUP_ENABLE 5 |
| #define USBCTL1 0x19 |
| #define VBUS_PIN 0 |
| #define USB_FULL_SPEED 1 |
| #define USB_HIGH_SPEED 2 |
| #define GENERATE_RESUME 3 |
| #define VIRTUAL_ENDPOINT_ENABLE 4 |
| #define FRAME0 0x1a |
| #define FRAME1 0x1b |
| #define OURADDR 0x30 |
| #define FORCE_IMMEDIATE 7 |
| #define USBDIAG 0x31 |
| #define FORCE_TRANSMIT_CRC_ERROR 0 |
| #define PREVENT_TRANSMIT_BIT_STUFF 1 |
| #define FORCE_RECEIVE_ERROR 2 |
| #define FAST_TIMES 4 |
| #define USBTEST 0x32 |
| #define TEST_MODE_SELECT 0 |
| #define NORMAL_OPERATION 0 |
| #define TEST_J 1 |
| #define TEST_K 2 |
| #define TEST_SE0_NAK 3 |
| #define TEST_PACKET 4 |
| #define TEST_FORCE_ENABLE 5 |
| #define XCVRDIAG 0x33 |
| #define FORCE_FULL_SPEED 2 |
| #define FORCE_HIGH_SPEED 3 |
| #define OPMODE 4 |
| #define NORMAL_OPERATION 0 |
| #define NON_DRIVING 1 |
| #define DISABLE_BITSTUFF_AND_NRZI_ENCODE 2 |
| #define LINESTATE 6 |
| #define SE0_STATE 0 |
| #define J_STATE 1 |
| #define K_STATE 2 |
| #define SE1_STATE 3 |
| #define VIRTOUT0 0x34 |
| #define VIRTOUT1 0x35 |
| #define VIRTIN0 0x36 |
| #define VIRTIN1 0x37 |
| #define SETUP0 0x40 |
| #define SETUP1 0x41 |
| #define SETUP2 0x42 |
| #define SETUP3 0x43 |
| #define SETUP4 0x44 |
| #define SETUP5 0x45 |
| #define SETUP6 0x46 |
| #define SETUP7 0x47 |
| /* Endpoint Registers (Paged via PAGESEL) */ |
| #define EP_DATA 0x05 |
| #define EP_STAT0 0x06 |
| #define DATA_IN_TOKEN_INTERRUPT 0 |
| #define DATA_OUT_TOKEN_INTERRUPT 1 |
| #define DATA_PACKET_TRANSMITTED_INTERRUPT 2 |
| #define DATA_PACKET_RECEIVED_INTERRUPT 3 |
| #define SHORT_PACKET_TRANSFERRED_INTERRUPT 4 |
| #define NAK_OUT_PACKETS 5 |
| #define BUFFER_EMPTY 6 |
| #define BUFFER_FULL 7 |
| #define EP_STAT1 0x07 |
| #define TIMEOUT 0 |
| #define USB_OUT_ACK_SENT 1 |
| #define USB_OUT_NAK_SENT 2 |
| #define USB_IN_ACK_RCVD 3 |
| #define USB_IN_NAK_SENT 4 |
| #define USB_STALL_SENT 5 |
| #define LOCAL_OUT_ZLP 6 |
| #define BUFFER_FLUSH 7 |
| #define EP_TRANSFER0 0x08 |
| #define EP_TRANSFER1 0x09 |
| #define EP_TRANSFER2 0x0a |
| #define EP_IRQENB 0x0b |
| #define DATA_IN_TOKEN_INTERRUPT_ENABLE 0 |
| #define DATA_OUT_TOKEN_INTERRUPT_ENABLE 1 |
| #define DATA_PACKET_TRANSMITTED_INTERRUPT_ENABLE 2 |
| #define DATA_PACKET_RECEIVED_INTERRUPT_ENABLE 3 |
| #define SHORT_PACKET_TRANSFERRED_INTERRUPT_ENABLE 4 |
| #define EP_AVAIL0 0x0c |
| #define EP_AVAIL1 0x0d |
| #define EP_RSPCLR 0x0e |
| #define EP_RSPSET 0x0f |
| #define ENDPOINT_HALT 0 |
| #define ENDPOINT_TOGGLE 1 |
| #define NAK_OUT_PACKETS_MODE 2 |
| #define CONTROL_STATUS_PHASE_HANDSHAKE 3 |
| #define INTERRUPT_MODE 4 |
| #define AUTOVALIDATE 5 |
| #define HIDE_STATUS_PHASE 6 |
| #define ALT_NAK_OUT_PACKETS 7 |
| #define EP_MAXPKT0 0x28 |
| #define EP_MAXPKT1 0x29 |
| #define ADDITIONAL_TRANSACTION_OPPORTUNITIES 3 |
| #define NONE_ADDITIONAL_TRANSACTION 0 |
| #define ONE_ADDITIONAL_TRANSACTION 1 |
| #define TWO_ADDITIONAL_TRANSACTION 2 |
| #define EP_CFG 0x2a |
| #define ENDPOINT_NUMBER 0 |
| #define ENDPOINT_DIRECTION 4 |
| #define ENDPOINT_TYPE 5 |
| #define ENDPOINT_ENABLE 7 |
| #define EP_HBW 0x2b |
| #define HIGH_BANDWIDTH_OUT_TRANSACTION_PID 0 |
| #define DATA0_PID 0 |
| #define DATA1_PID 1 |
| #define DATA2_PID 2 |
| #define MDATA_PID 3 |
| #define EP_BUFF_STATES 0x2c |
| #define BUFFER_A_STATE 0 |
| #define BUFFER_B_STATE 2 |
| #define BUFF_FREE 0 |
| #define BUFF_VALID 1 |
| #define BUFF_LCL 2 |
| #define BUFF_USB 3 |
| |
| /*---------------------------------------------------------------------------*/ |
| |
| #define PCI_DEVICE_ID_RDK1 0x9054 |
| |
| /* PCI-RDK EPLD Registers */ |
| #define RDK_EPLD_IO_REGISTER1 0x00000000 |
| #define RDK_EPLD_USB_RESET 0 |
| #define RDK_EPLD_USB_POWERDOWN 1 |
| #define RDK_EPLD_USB_WAKEUP 2 |
| #define RDK_EPLD_USB_EOT 3 |
| #define RDK_EPLD_DPPULL 4 |
| #define RDK_EPLD_IO_REGISTER2 0x00000004 |
| #define RDK_EPLD_BUSWIDTH 0 |
| #define RDK_EPLD_USER 2 |
| #define RDK_EPLD_RESET_INTERRUPT_ENABLE 3 |
| #define RDK_EPLD_DMA_TIMEOUT_ENABLE 4 |
| #define RDK_EPLD_STATUS_REGISTER 0x00000008 |
| #define RDK_EPLD_USB_LRESET 0 |
| #define RDK_EPLD_REVISION_REGISTER 0x0000000c |
| |
| /* PCI-RDK PLX 9054 Registers */ |
| #define INTCSR 0x68 |
| #define PCI_INTERRUPT_ENABLE 8 |
| #define LOCAL_INTERRUPT_INPUT_ENABLE 11 |
| #define LOCAL_INPUT_INTERRUPT_ACTIVE 15 |
| #define LOCAL_DMA_CHANNEL_0_INTERRUPT_ENABLE 18 |
| #define LOCAL_DMA_CHANNEL_1_INTERRUPT_ENABLE 19 |
| #define DMA_CHANNEL_0_INTERRUPT_ACTIVE 21 |
| #define DMA_CHANNEL_1_INTERRUPT_ACTIVE 22 |
| #define CNTRL 0x6C |
| #define RELOAD_CONFIGURATION_REGISTERS 29 |
| #define PCI_ADAPTER_SOFTWARE_RESET 30 |
| #define DMAMODE0 0x80 |
| #define LOCAL_BUS_WIDTH 0 |
| #define INTERNAL_WAIT_STATES 2 |
| #define TA_READY_INPUT_ENABLE 6 |
| #define LOCAL_BURST_ENABLE 8 |
| #define SCATTER_GATHER_MODE 9 |
| #define DONE_INTERRUPT_ENABLE 10 |
| #define LOCAL_ADDRESSING_MODE 11 |
| #define DEMAND_MODE 12 |
| #define DMA_EOT_ENABLE 14 |
| #define FAST_SLOW_TERMINATE_MODE_SELECT 15 |
| #define DMA_CHANNEL_INTERRUPT_SELECT 17 |
| #define DMAPADR0 0x84 |
| #define DMALADR0 0x88 |
| #define DMASIZ0 0x8c |
| #define DMADPR0 0x90 |
| #define DESCRIPTOR_LOCATION 0 |
| #define END_OF_CHAIN 1 |
| #define INTERRUPT_AFTER_TERMINAL_COUNT 2 |
| #define DIRECTION_OF_TRANSFER 3 |
| #define DMACSR0 0xa8 |
| #define CHANNEL_ENABLE 0 |
| #define CHANNEL_START 1 |
| #define CHANNEL_ABORT 2 |
| #define CHANNEL_CLEAR_INTERRUPT 3 |
| #define CHANNEL_DONE 4 |
| #define DMATHR 0xb0 |
| #define LBRD1 0xf8 |
| #define MEMORY_SPACE_LOCAL_BUS_WIDTH 0 |
| #define W8_BIT 0 |
| #define W16_BIT 1 |
| |
| /* Special OR'ing of INTCSR bits */ |
| #define LOCAL_INTERRUPT_TEST \ |
| ((1 << LOCAL_INPUT_INTERRUPT_ACTIVE) | \ |
| (1 << LOCAL_INTERRUPT_INPUT_ENABLE)) |
| |
| #define DMA_CHANNEL_0_TEST \ |
| ((1 << DMA_CHANNEL_0_INTERRUPT_ACTIVE) | \ |
| (1 << LOCAL_DMA_CHANNEL_0_INTERRUPT_ENABLE)) |
| |
| #define DMA_CHANNEL_1_TEST \ |
| ((1 << DMA_CHANNEL_1_INTERRUPT_ACTIVE) | \ |
| (1 << LOCAL_DMA_CHANNEL_1_INTERRUPT_ENABLE)) |
| |
| /* EPLD Registers */ |
| #define RDK_EPLD_IO_REGISTER1 0x00000000 |
| #define RDK_EPLD_USB_RESET 0 |
| #define RDK_EPLD_USB_POWERDOWN 1 |
| #define RDK_EPLD_USB_WAKEUP 2 |
| #define RDK_EPLD_USB_EOT 3 |
| #define RDK_EPLD_DPPULL 4 |
| #define RDK_EPLD_IO_REGISTER2 0x00000004 |
| #define RDK_EPLD_BUSWIDTH 0 |
| #define RDK_EPLD_USER 2 |
| #define RDK_EPLD_RESET_INTERRUPT_ENABLE 3 |
| #define RDK_EPLD_DMA_TIMEOUT_ENABLE 4 |
| #define RDK_EPLD_STATUS_REGISTER 0x00000008 |
| #define RDK_EPLD_USB_LRESET 0 |
| #define RDK_EPLD_REVISION_REGISTER 0x0000000c |
| |
| #define EPLD_IO_CONTROL_REGISTER 0x400 |
| #define NET2272_RESET 0 |
| #define BUSWIDTH 1 |
| #define MPX_MODE 3 |
| #define USER 4 |
| #define DMA_TIMEOUT_ENABLE 5 |
| #define DMA_CTL_DACK 6 |
| #define EPLD_DMA_ENABLE 7 |
| #define EPLD_DMA_CONTROL_REGISTER 0x800 |
| #define SPLIT_DMA_MODE 0 |
| #define SPLIT_DMA_DIRECTION 1 |
| #define SPLIT_DMA_ENABLE 2 |
| #define SPLIT_DMA_INTERRUPT_ENABLE 3 |
| #define SPLIT_DMA_INTERRUPT 4 |
| #define EPLD_DMA_MODE 5 |
| #define EPLD_DMA_CONTROLLER_ENABLE 7 |
| #define SPLIT_DMA_ADDRESS_LOW 0xc00 |
| #define SPLIT_DMA_ADDRESS_HIGH 0x1000 |
| #define SPLIT_DMA_BYTE_COUNT_LOW 0x1400 |
| #define SPLIT_DMA_BYTE_COUNT_HIGH 0x1800 |
| #define EPLD_REVISION_REGISTER 0x1c00 |
| #define SPLIT_DMA_RAM 0x4000 |
| #define DMA_RAM_SIZE 0x1000 |
| |
| /*---------------------------------------------------------------------------*/ |
| |
| #define PCI_DEVICE_ID_RDK2 0x3272 |
| |
| /* 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 |
