[PATCH] AT91RM9200 Ethernet driver

This patch adds support for the Ethernet controller integrated in the
Atmel AT91RM9200 SoC processor.

Changes since the previous submission (01/02/2006) are:
  - Make use of the clk.h clock infrastructure.
  - The multicast hash function is not crc32. [Patch by Pedro Perez]

Signed-off-by: Andrew Victor <andrew@sanpeople.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>

1 files changed, 138 insertions, 0 deletions

diff --git a/include/asm-arm/arch-at91rm9200/at91rm9200_emac.h b/include/asm-arm/arch-at91rm9200/at91rm9200_emac.h
new file mode 100644
index 000000000000..fbc091e61e2f
--- /dev/null
+++ b/include/asm-arm/arch-at91rm9200/at91rm9200_emac.h
@@ -0,0 +1,138 @@
+/*
+ * include/asm-arm/arch-at91rm9200/at91rm9200_emac.h
+ *
+ * Copyright (C) 2005 Ivan Kokshaysky
+ * Copyright (C) SAN People
+ *
+ * Ethernet MAC registers.
+ * Based on AT91RM9200 datasheet revision E.
+ *
+ * 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.
+ */
+
+#ifndef AT91RM9200_EMAC_H
+#define AT91RM9200_EMAC_H
+
+#define AT91_EMAC_CTL           0x00    /* Control Register */
+#define         AT91_EMAC_LB            (1 <<  0)       /* Loopback */
+#define         AT91_EMAC_LBL           (1 <<  1)       /* Loopback Local */
+#define         AT91_EMAC_RE            (1 <<  2)       /* Receive Enable */
+#define         AT91_EMAC_TE            (1 <<  3)       /* Transmit Enable */
+#define         AT91_EMAC_MPE           (1 <<  4)       /* Management Port Enable */
+#define         AT91_EMAC_CSR           (1 <<  5)       /* Clear Statistics Registers */
+#define         AT91_EMAC_INCSTAT       (1 <<  6)       /* Increment Statistics Registers */
+#define         AT91_EMAC_WES           (1 <<  7)       /* Write Enable for Statistics Registers */
+#define         AT91_EMAC_BP            (1 <<  8)       /* Back Pressure */
+
+#define AT91_EMAC_CFG           0x04    /* Configuration Register */
+#define         AT91_EMAC_SPD           (1 <<  0)       /* Speed */
+#define         AT91_EMAC_FD            (1 <<  1)       /* Full Duplex */
+#define         AT91_EMAC_BR            (1 <<  2)       /* Bit Rate */
+#define         AT91_EMAC_CAF           (1 <<  4)       /* Copy All Frames */
+#define         AT91_EMAC_NBC           (1 <<  5)       /* No Broadcast */
+#define         AT91_EMAC_MTI           (1 <<  6)       /* Multicast Hash Enable */
+#define         AT91_EMAC_UNI           (1 <<  7)       /* Unicast Hash Enable */
+#define         AT91_EMAC_BIG           (1 <<  8)       /* Receive 1522 Bytes */
+#define         AT91_EMAC_EAE           (1 <<  9)       /* External Address Match Enable */
+#define         AT91_EMAC_CLK           (3 << 10)       /* MDC Clock Divisor */
+#define         AT91_EMAC_CLK_DIV8              (0 << 10)
+#define         AT91_EMAC_CLK_DIV16             (1 << 10)
+#define         AT91_EMAC_CLK_DIV32             (2 << 10)
+#define         AT91_EMAC_CLK_DIV64             (3 << 10)
+#define         AT91_EMAC_RTY           (1 << 12)       /* Retry Test */
+#define         AT91_EMAC_RMII          (1 << 13)       /* Reduce MII (RMII) */
+
+#define AT91_EMAC_SR            0x08    /* Status Register */
+#define         AT91_EMAC_SR_LINK       (1 <<  0)       /* Link */
+#define         AT91_EMAC_SR_MDIO       (1 <<  1)       /* MDIO pin */
+#define         AT91_EMAC_SR_IDLE       (1 <<  2)       /* PHY idle */
+
+#define AT91_EMAC_TAR           0x0c    /* Transmit Address Register */
+
+#define AT91_EMAC_TCR           0x10    /* Transmit Control Register */
+#define         AT91_EMAC_LEN           (0x7ff << 0)    /* Transmit Frame Length */
+#define         AT91_EMAC_NCRC          (1     << 15)   /* No CRC */
+
+#define AT91_EMAC_TSR           0x14    /* Transmit Status Register */
+#define         AT91_EMAC_TSR_OVR       (1 <<  0)       /* Transmit Buffer Overrun */
+#define         AT91_EMAC_TSR_COL       (1 <<  1)       /* Collision Occurred */
+#define         AT91_EMAC_TSR_RLE       (1 <<  2)       /* Retry Limit Exceeded */
+#define         AT91_EMAC_TSR_IDLE      (1 <<  3)       /* Transmitter Idle */
+#define         AT91_EMAC_TSR_BNQ       (1 <<  4)       /* Transmit Buffer not Queued */
+#define         AT91_EMAC_TSR_COMP      (1 <<  5)       /* Transmit Complete */
+#define         AT91_EMAC_TSR_UND       (1 <<  6)       /* Transmit Underrun */
+
+#define AT91_EMAC_RBQP          0x18    /* Receive Buffer Queue Pointer */
+
+#define AT91_EMAC_RSR           0x20    /* Receive Status Register */
+#define         AT91_EMAC_RSR_BNA       (1 <<  0)       /* Buffer Not Available */
+#define         AT91_EMAC_RSR_REC       (1 <<  1)       /* Frame Received */
+#define         AT91_EMAC_RSR_OVR       (1 <<  2)       /* RX Overrun */
+
+#define AT91_EMAC_ISR           0x24    /* Interrupt Status Register */
+#define         AT91_EMAC_DONE          (1 <<  0)       /* Management Done */
+#define         AT91_EMAC_RCOM          (1 <<  1)       /* Receive Complete */
+#define         AT91_EMAC_RBNA          (1 <<  2)       /* Receive Buffer Not Available */
+#define         AT91_EMAC_TOVR          (1 <<  3)       /* Transmit Buffer Overrun */
+#define         AT91_EMAC_TUND          (1 <<  4)       /* Transmit Buffer Underrun */
+#define         AT91_EMAC_RTRY          (1 <<  5)       /* Retry Limit */
+#define         AT91_EMAC_TBRE          (1 <<  6)       /* Transmit Buffer Register Empty */
+#define         AT91_EMAC_TCOM          (1 <<  7)       /* Transmit Complete */
+#define         AT91_EMAC_TIDLE         (1 <<  8)       /* Transmit Idle */
+#define         AT91_EMAC_LINK          (1 <<  9)       /* Link */
+#define         AT91_EMAC_ROVR          (1 << 10)       /* RX Overrun */
+#define         AT91_EMAC_ABT           (1 << 11)       /* Abort */
+
+#define AT91_EMAC_IER           0x28    /* Interrupt Enable Register */
+#define AT91_EMAC_IDR           0x2c    /* Interrupt Disable Register */
+#define AT91_EMAC_IMR           0x30    /* Interrupt Mask Register */
+
+#define AT91_EMAC_MAN           0x34    /* PHY Maintenance Register */
+#define         AT91_EMAC_DATA          (0xffff << 0)   /* MDIO Data */
+#define         AT91_EMAC_REGA          (0x1f   << 18)  /* MDIO Register */
+#define         AT91_EMAC_PHYA          (0x1f   << 23)  /* MDIO PHY Address */
+#define         AT91_EMAC_RW            (3      << 28)  /* Read/Write operation */
+#define                 AT91_EMAC_RW_W          (1 << 28)
+#define                 AT91_EMAC_RW_R          (2 << 28)
+#define         AT91_EMAC_MAN_802_3     0x40020000      /* IEEE 802.3 value */
+
+/*
+ * Statistics Registers.
+ */
+#define AT91_EMAC_FRA           0x40    /* Frames Transmitted OK */
+#define AT91_EMAC_SCOL          0x44    /* Single Collision Frame */
+#define AT91_EMAC_MCOL          0x48    /* Multiple Collision Frame */
+#define AT91_EMAC_OK            0x4c    /* Frames Received OK */
+#define AT91_EMAC_SEQE          0x50    /* Frame Check Sequence Error */
+#define AT91_EMAC_ALE           0x54    /* Alignmemt Error */
+#define AT91_EMAC_DTE           0x58    /* Deffered Transmission Frame */
+#define AT91_EMAC_LCOL          0x5c    /* Late Collision */
+#define AT91_EMAC_ECOL          0x60    /* Excessive Collision */
+#define AT91_EMAC_TUE           0x64    /* Transmit Underrun Error */
+#define AT91_EMAC_CSE           0x68    /* Carrier Sense Error */
+#define AT91_EMAC_DRFC          0x6c    /* Discard RX Frame */
+#define AT91_EMAC_ROV           0x70    /* Receive Overrun */
+#define AT91_EMAC_CDE           0x74    /* Code Error */
+#define AT91_EMAC_ELR           0x78    /* Excessive Length Error */
+#define AT91_EMAC_RJB           0x7c    /* Receive Jabber */
+#define AT91_EMAC_USF           0x80    /* Undersize Frame */
+#define AT91_EMAC_SQEE          0x84    /* SQE Test Error */
+
+/*
+ * Address Registers.
+ */
+#define AT91_EMAC_HSL           0x90    /* Hash Address Low [31:0] */
+#define AT91_EMAC_HSH           0x94    /* Hash Address High [63:32] */
+#define AT91_EMAC_SA1L          0x98    /* Specific Address 1 Low, bytes 0-3 */
+#define AT91_EMAC_SA1H          0x9c    /* Specific Address 1 High, bytes 4-5 */
+#define AT91_EMAC_SA2L          0xa0    /* Specific Address 2 Low, bytes 0-3 */
+#define AT91_EMAC_SA2H          0xa4    /* Specific Address 2 High, bytes 4-5 */
+#define AT91_EMAC_SA3L          0xa8    /* Specific Address 3 Low, bytes 0-3 */
+#define AT91_EMAC_SA3H          0xac    /* Specific Address 3 High, bytes 4-5 */
+#define AT91_EMAC_SA4L          0xb0    /* Specific Address 4 Low, bytes 0-3 */
+#define AT91_EMAC_SA4H          0xb4    /* Specific Address 4 High, bytes 4-5 */
+
+#endif