From 960d1e36b09803b291803ab336412f7d95349568 Mon Sep 17 00:00:00 2001 From: Sylvie Barlow Date: Fri, 20 Apr 2018 14:10:26 +0100 Subject: [icplus] Add driver for IC+ network card Signed-off-by: Sylvie Barlow Signed-off-by: Michael Brown --- src/drivers/net/icplus.h | 206 +++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 206 insertions(+) create mode 100644 src/drivers/net/icplus.h (limited to 'src/drivers/net/icplus.h') diff --git a/src/drivers/net/icplus.h b/src/drivers/net/icplus.h new file mode 100644 index 00000000..35fa422a --- /dev/null +++ b/src/drivers/net/icplus.h @@ -0,0 +1,206 @@ +#ifndef _ICPLUS_H +#define _ICPLUS_H + +/** @file + * + * IC+ network driver + * + */ + +#include +#include + +FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL ); + +/** BAR size */ +#define ICP_BAR_SIZE 0x200 + +/** Alignment requirement */ +#define ICP_ALIGN 0x8 + +/** Base address low register offset */ +#define ICP_BASE_LO 0x0 + +/** Base address high register offset */ +#define ICP_BASE_HI 0x4 + +/** ASIC control register (double word) */ +#define ICP_ASICCTRL 0x30 +#define ICP_ASICCTRL_PHYSPEED1000 0x00000040UL /**< PHY speed 1000 */ +#define ICP_ASICCTRL_GLOBALRESET 0x00010000UL /**< Global reset */ +#define ICP_ASICCTRL_DMA 0x00080000UL /**< DMA */ +#define ICP_ASICCTRL_FIFO 0x00100000UL /**< FIFO */ +#define ICP_ASICCTRL_NETWORK 0x00200000UL /**< Network */ +#define ICP_ASICCTRL_HOST 0x00400000UL /**< Host */ +#define ICP_ASICCTRL_AUTOINIT 0x00800000UL /**< Auto init */ +#define ICP_ASICCTRL_RESETBUSY 0x04000000UL /**< Reset busy */ + +/** Maximum time to wait for reset */ +#define ICP_RESET_MAX_WAIT_MS 1000 + +/** DMA control register (word/double word) */ +#define ICP_DMACTRL 0x00 +#define ICP_DMACTRL_RXPOLLNOW 0x0010 /**< Receive poll now */ +#define ICP_DMACTRL_TXPOLLNOW 0x1000 /**< Transmit poll now */ + +/** EEPROM control register (word) */ +#define ICP_EEPROMCTRL 0x4a +#define ICP_EEPROMCTRL_ADDRESS( x ) ( (x) << 0 ) /**< Address */ +#define ICP_EEPROMCTRL_OPCODE( x ) ( (x) << 8 ) /**< Opcode */ +#define ICP_EEPROMCTRL_OPCODE_READ \ + ICP_EEPROMCTRL_OPCODE ( 2 ) /**< Read register */ +#define ICP_EEPROMCTRL_BUSY 0x8000 /**< EEPROM busy */ + +/** Maximum time to wait for reading EEPROM */ +#define ICP_EEPROM_MAX_WAIT_MS 1000 + +/** EEPROM word length */ +#define ICP_EEPROM_WORD_LEN_LOG2 1 + +/** Minimum EEPROM size, in words */ +#define ICP_EEPROM_MIN_SIZE_WORDS 0x20 + +/** Address of MAC address within EEPROM */ +#define ICP_EEPROM_MAC 0x10 + +/** EEPROM data register (word) */ +#define ICP_EEPROMDATA 0x48 + +/** Interupt status register (word) */ +#define ICP_INTSTATUS 0x5e +#define ICP_INTSTATUS_TXCOMPLETE 0x0004 /**< TX complete */ +#define ICP_INTSTATUS_LINKEVENT 0x0100 /**< Link event */ +#define ICP_INTSTATUS_RXDMACOMPLETE 0x0400 /**< RX DMA complete */ + +/** MAC control register (double word) */ +#define ICP_MACCTRL 0x6c +#define ICP_MACCTRL_DUPLEX 0x00000020UL /**< Duplex select */ +#define ICP_MACCTRL_TXENABLE 0x01000000UL /**< TX enable */ +#define ICP_MACCTRL_TXDISABLE 0x02000000UL /**< TX disable */ +#define ICP_MACCTRL_RXENABLE 0x08000000UL /**< RX enable */ +#define ICP_MACCTRL_RXDISABLE 0x10000000UL /**< RX disable */ + +/** PHY control register (byte) */ +#define ICP_PHYCTRL 0x76 +#define ICP_PHYCTRL_MGMTCLK 0x01 /**< Management clock */ +#define ICP_PHYCTRL_MGMTDATA 0x02 /**< Management data */ +#define ICP_PHYCTRL_MGMTDIR 0x04 /**< Management direction */ +#define ICP_PHYCTRL_LINKSPEED 0xc0 /**< Link speed */ + +/** Receive mode register (word) */ +#define ICP_RXMODE 0x88 +#define ICP_RXMODE_UNICAST 0x0001 /**< Receive unicast */ +#define ICP_RXMODE_MULTICAST 0x0002 /**< Receice multicast */ +#define ICP_RXMODE_BROADCAST 0x0004 /**< Receive broadcast */ +#define ICP_RXMODE_ALLFRAMES 0x0008 /**< Receive all frames */ + +/** List pointer receive register */ +#define ICP_RFDLISTPTR 0x1c + +/** List pointer transmit register */ +#define ICP_TFDLISTPTR 0x10 + +/** Transmit status register */ +#define ICP_TXSTATUS 0x60 +#define ICP_TXSTATUS_ERROR 0x00000001UL /**< TX error */ + +/** Data fragment */ +union icplus_fragment { + /** Address of data */ + uint64_t address; + /** Length */ + struct { + /** Reserved */ + uint8_t reserved[6]; + /** Length of data */ + uint16_t len; + }; +}; + +/** Transmit or receive descriptor */ +struct icplus_descriptor { + /** Address of next descriptor */ + uint64_t next; + /** Actual length */ + uint16_t len; + /** Flags */ + uint8_t flags; + /** Control */ + uint8_t control; + /** VLAN */ + uint16_t vlan; + /** Reserved */ + uint16_t reserved_a; + /** Data buffer */ + union icplus_fragment data; + /** Reserved */ + uint8_t reserved_b[8]; +}; + +/** Descriptor complete */ +#define ICP_DONE 0x80 + +/** Transmit alignment disabled */ +#define ICP_TX_UNALIGN 0x01 + +/** Request transmit completion */ +#define ICP_TX_INDICATE 0x40 + +/** Sole transmit fragment */ +#define ICP_TX_SOLE_FRAG 0x01 + +/** Recieve frame overrun error */ +#define ICP_RX_ERR_OVERRUN 0x01 + +/** Receive runt frame error */ +#define ICP_RX_ERR_RUNT 0x02 + +/** Receive alignment error */ +#define ICP_RX_ERR_ALIGN 0x04 + +/** Receive FCS error */ +#define ICP_RX_ERR_FCS 0x08 + +/** Receive oversized frame error */ +#define ICP_RX_ERR_OVERSIZED 0x10 + +/** Recieve length error */ +#define ICP_RX_ERR_LEN 0x20 + +/** Descriptor ring */ +struct icplus_ring { + /** Producer counter */ + unsigned int prod; + /** Consumer counter */ + unsigned int cons; + /** Ring entries */ + struct icplus_descriptor *entry; + /* List pointer register */ + unsigned int listptr; +}; + +/** Number of descriptors */ +#define ICP_NUM_DESC 4 + +/** Maximum receive packet length */ +#define ICP_RX_MAX_LEN ETH_FRAME_LEN + +/** An IC+ network card */ +struct icplus_nic { + /** Registers */ + void *regs; + /** EEPROM */ + struct nvs_device eeprom; + /** MII bit bashing interface */ + struct mii_bit_basher miibit; + /** MII device */ + struct mii_device mii; + /** Transmit descriptor ring */ + struct icplus_ring tx; + /** Receive descriptor ring */ + struct icplus_ring rx; + /** Receive I/O buffers */ + struct io_buffer *rx_iobuf[ICP_NUM_DESC]; +}; + +#endif /* _ICPLUS_H */ -- cgit v1.2.3-55-g7522