diff options
Diffstat (limited to 'drivers/usb/gadget/udc/net2272.h')
| -rw-r--r-- | drivers/usb/gadget/udc/net2272.h | 583 |
1 files changed, 583 insertions, 0 deletions
diff --git a/drivers/usb/gadget/udc/net2272.h b/drivers/usb/gadget/udc/net2272.h new file mode 100644 index 000000000..c66930811 --- /dev/null +++ b/drivers/usb/gadget/udc/net2272.h @@ -0,0 +1,583 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * PLX NET2272 high/full speed USB device controller + * + * Copyright (C) 2005-2006 PLX Technology, Inc. + * Copyright (C) 2006-2011 Analog Devices, Inc. + */ + +#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 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, + added: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_USB_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 |