1 files changed, 267 insertions, 0 deletions
diff --git a/qemu/roms/ipxe/src/drivers/net/intel.h b/qemu/roms/ipxe/src/drivers/net/intel.h
new file mode 100644
index 000000000..8c4479bb4
--- /dev/null
+++ b/qemu/roms/ipxe/src/drivers/net/intel.h
@@ -0,0 +1,267 @@
+#ifndef _INTEL_H
+#define _INTEL_H
+
+/** @file
+ *
+ * Intel 10/100/1000 network card driver
+ *
+ */
+
+FILE_LICENCE ( GPL2_OR_LATER );
+
+#include <stdint.h>
+#include <ipxe/if_ether.h>
+#include <ipxe/nvs.h>
+
+/** Intel BAR size */
+#define INTEL_BAR_SIZE ( 128 * 1024 )
+
+/** A packet descriptor */
+struct intel_descriptor {
+	/** Buffer address */
+	uint64_t address;
+	/** Length */
+	uint16_t length;
+	/** Reserved */
+	uint8_t reserved_a;
+	/** Command */
+	uint8_t command;
+	/** Status */
+	uint8_t status;
+	/** Errors */
+	uint8_t errors;
+	/** Reserved */
+	uint16_t reserved_b;
+} __attribute__ (( packed ));
+
+/** Packet descriptor command bits */
+enum intel_descriptor_command {
+	/** Report status */
+	INTEL_DESC_CMD_RS = 0x08,
+	/** Insert frame checksum (CRC) */
+	INTEL_DESC_CMD_IFCS = 0x02,
+	/** End of packet */
+	INTEL_DESC_CMD_EOP = 0x01,
+};
+
+/** Packet descriptor status bits */
+enum intel_descriptor_status {
+	/** Descriptor done */
+	INTEL_DESC_STATUS_DD = 0x01,
+};
+
+/** Device Control Register */
+#define INTEL_CTRL 0x00000UL
+#define INTEL_CTRL_LRST		0x00000008UL	/**< Link reset */
+#define INTEL_CTRL_ASDE		0x00000020UL	/**< Auto-speed detection */
+#define INTEL_CTRL_SLU		0x00000040UL	/**< Set link up */
+#define INTEL_CTRL_FRCSPD	0x00000800UL	/**< Force speed */
+#define INTEL_CTRL_FRCDPLX	0x00001000UL	/**< Force duplex */
+#define INTEL_CTRL_RST		0x04000000UL	/**< Device reset */
+#define INTEL_CTRL_PHY_RST	0x80000000UL	/**< PHY reset */
+
+/** Time to delay for device reset, in milliseconds */
+#define INTEL_RESET_DELAY_MS 20
+
+/** Device Status Register */
+#define INTEL_STATUS 0x00008UL
+#define INTEL_STATUS_LU		0x00000002UL	/**< Link up */
+
+/** EEPROM Read Register */
+#define INTEL_EERD 0x00014UL
+#define INTEL_EERD_START	0x00000001UL	/**< Start read */
+#define INTEL_EERD_DONE_SMALL	0x00000010UL	/**< Read done (small EERD) */
+#define INTEL_EERD_DONE_LARGE	0x00000002UL	/**< Read done (large EERD) */
+#define INTEL_EERD_ADDR_SHIFT_SMALL 8		/**< Address shift (small) */
+#define INTEL_EERD_ADDR_SHIFT_LARGE 2		/**< Address shift (large) */
+#define INTEL_EERD_DATA(value)	( (value) >> 16 ) /**< Read data */
+
+/** Maximum time to wait for EEPROM read, in milliseconds */
+#define INTEL_EEPROM_MAX_WAIT_MS 100
+
+/** EEPROM word length */
+#define INTEL_EEPROM_WORD_LEN_LOG2 1
+
+/** Minimum EEPROM size, in words */
+#define INTEL_EEPROM_MIN_SIZE_WORDS 64
+
+/** Offset of MAC address within EEPROM */
+#define INTEL_EEPROM_MAC 0x00
+
+/** Interrupt Cause Read Register */
+#define INTEL_ICR 0x000c0UL
+#define INTEL_IRQ_TXDW		0x00000001UL	/**< Transmit descriptor done */
+#define INTEL_IRQ_LSC		0x00000004UL	/**< Link status change */
+#define INTEL_IRQ_RXT0		0x00000080UL	/**< Receive timer */
+#define INTEL_IRQ_RXO		0x00000400UL	/**< Receive overrun */
+
+/** Interrupt Mask Set/Read Register */
+#define INTEL_IMS 0x000d0UL
+
+/** Interrupt Mask Clear Register */
+#define INTEL_IMC 0x000d8UL
+
+/** Receive Control Register */
+#define INTEL_RCTL 0x00100UL
+#define INTEL_RCTL_EN		0x00000002UL	/**< Receive enable */
+#define INTEL_RCTL_UPE		0x00000008UL	/**< Unicast promiscuous mode */
+#define INTEL_RCTL_MPE		0x00000010UL	/**< Multicast promiscuous */
+#define INTEL_RCTL_BAM		0x00008000UL	/**< Broadcast accept mode */
+#define INTEL_RCTL_BSIZE_BSEX(bsex,bsize) \
+	( ( (bsize) << 16 ) | ( (bsex) << 25 ) ) /**< Buffer size */
+#define INTEL_RCTL_BSIZE_2048	INTEL_RCTL_BSIZE_BSEX ( 0, 0 )
+#define INTEL_RCTL_BSIZE_BSEX_MASK INTEL_RCTL_BSIZE_BSEX ( 1, 3 )
+#define INTEL_RCTL_SECRC	0x04000000UL	/**< Strip CRC */
+
+/** Transmit Control Register */
+#define INTEL_TCTL 0x00400UL
+#define INTEL_TCTL_EN		0x00000002UL	/**< Transmit enable */
+#define INTEL_TCTL_PSP		0x00000008UL	/**< Pad short packets */
+#define INTEL_TCTL_CT(x)	( (x) << 4 )	/**< Collision threshold */
+#define INTEL_TCTL_CT_DEFAULT	INTEL_TCTL_CT ( 0x0f )
+#define INTEL_TCTL_CT_MASK	INTEL_TCTL_CT ( 0xff )
+#define INTEL_TCTL_COLD(x)	( (x) << 12 )	/**< Collision distance */
+#define INTEL_TCTL_COLD_DEFAULT	INTEL_TCTL_COLD ( 0x040 )
+#define INTEL_TCTL_COLD_MASK	INTEL_TCTL_COLD ( 0x3ff )
+
+/** Packet Buffer Allocation */
+#define INTEL_PBA 0x01000UL
+
+/** Packet Buffer Size */
+#define INTEL_PBS 0x01008UL
+
+/** Receive Descriptor register block */
+#define INTEL_RD 0x02800UL
+
+/** Number of receive descriptors
+ *
+ * Minimum value is 8, since the descriptor ring length must be a
+ * multiple of 128.
+ */
+#define INTEL_NUM_RX_DESC 16
+
+/** Receive descriptor ring fill level */
+#define INTEL_RX_FILL 8
+
+/** Receive buffer length */
+#define INTEL_RX_MAX_LEN 2048
+
+/** Transmit Descriptor register block */
+#define INTEL_TD 0x03800UL
+
+/** Number of transmit descriptors
+ *
+ * Descriptor ring length must be a multiple of 16.  ICH8/9/10
+ * requires a minimum of 16 TX descriptors.
+ */
+#define INTEL_NUM_TX_DESC 16
+
+/** Transmit descriptor ring maximum fill level */
+#define INTEL_TX_FILL ( INTEL_NUM_TX_DESC - 1 )
+
+/** Receive/Transmit Descriptor Base Address Low (offset) */
+#define INTEL_xDBAL 0x00
+
+/** Receive/Transmit Descriptor Base Address High (offset) */
+#define INTEL_xDBAH 0x04
+
+/** Receive/Transmit Descriptor Length (offset) */
+#define INTEL_xDLEN 0x08
+
+/** Receive/Transmit Descriptor Head (offset) */
+#define INTEL_xDH 0x10
+
+/** Receive/Transmit Descriptor Tail (offset) */
+#define INTEL_xDT 0x18
+
+/** Receive/Transmit Descriptor Control (offset) */
+#define INTEL_xDCTL 0x28
+#define INTEL_xDCTL_ENABLE	0x02000000UL	/**< Queue enable */
+
+/** Receive Address Low */
+#define INTEL_RAL0 0x05400UL
+
+/** Receive Address High */
+#define INTEL_RAH0 0x05404UL
+#define INTEL_RAH0_AV		0x80000000UL	/**< Address valid */
+
+/** Receive address */
+union intel_receive_address {
+	struct {
+		uint32_t low;
+		uint32_t high;
+	} __attribute__ (( packed )) reg;
+	uint8_t raw[ETH_ALEN];
+};
+
+/** An Intel descriptor ring */
+struct intel_ring {
+	/** Descriptors */
+	struct intel_descriptor *desc;
+	/** Producer index */
+	unsigned int prod;
+	/** Consumer index */
+	unsigned int cons;
+
+	/** Register block */
+	unsigned int reg;
+	/** Length (in bytes) */
+	size_t len;
+};
+
+/**
+ * Initialise descriptor ring
+ *
+ * @v ring		Descriptor ring
+ * @v count		Number of descriptors
+ * @v reg		Descriptor register block
+ */
+static inline __attribute__ (( always_inline)) void
+intel_init_ring ( struct intel_ring *ring, unsigned int count,
+		  unsigned int reg ) {
+	ring->len = ( count * sizeof ( ring->desc[0] ) );
+	ring->reg = reg;
+}
+
+/** An Intel network card */
+struct intel_nic {
+	/** Registers */
+	void *regs;
+	/** Port number (for multi-port devices) */
+	unsigned int port;
+	/** Flags */
+	unsigned int flags;
+
+	/** EEPROM */
+	struct nvs_device eeprom;
+	/** EEPROM done flag */
+	uint32_t eerd_done;
+	/** EEPROM address shift */
+	unsigned int eerd_addr_shift;
+
+	/** Transmit descriptor ring */
+	struct intel_ring tx;
+	/** Receive descriptor ring */
+	struct intel_ring rx;
+	/** Receive I/O buffers */
+	struct io_buffer *rx_iobuf[INTEL_NUM_RX_DESC];
+};
+
+/** Driver flags */
+enum intel_flags {
+	/** PBS/PBA errata workaround required */
+	INTEL_PBS_ERRATA = 0x0001,
+};
+
+extern int intel_create_ring ( struct intel_nic *intel,
+			       struct intel_ring *ring );
+extern void intel_destroy_ring ( struct intel_nic *intel,
+				 struct intel_ring *ring );
+extern void intel_refill_rx ( struct intel_nic *intel );
+extern void intel_empty_rx ( struct intel_nic *intel );
+extern int intel_transmit ( struct net_device *netdev,
+			    struct io_buffer *iobuf );
+extern void intel_poll_tx ( struct net_device *netdev );
+extern void intel_poll_rx ( struct net_device *netdev );
+
+#endif /* _INTEL_H */