net: add support for STMicroelectronics Ethernet controllers.

This is the driver for the ST MAC 10/100/1000 on-chip Ethernet
controllers (Synopsys IP blocks).

Driver documentation:
 o http://stlinux.com/drupal/kernel/network/stmmac
Revisions:
 o http://stlinux.com/drupal/kernel/network/stmmac-driver-revisions
Performances:
 o http://stlinux.com/drupal/benchmarks/networking/stmmac

Signed-off-by: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 204 insertions, 0 deletions

diff --git a/drivers/net/stmmac/gmac.h b/drivers/net/stmmac/gmac.h
new file mode 100644
index 000000000000..684a363120a9
--- /dev/null
+++ b/drivers/net/stmmac/gmac.h
@@ -0,0 +1,204 @@
+/*******************************************************************************
+  Copyright (C) 2007-2009  STMicroelectronics Ltd
+
+  This program is free software; you can redistribute it and/or modify it
+  under the terms and conditions of the GNU General Public License,
+  version 2, as published by the Free Software Foundation.
+
+  This program is distributed in the hope 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.,
+  51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+
+  The full GNU General Public License is included in this distribution in
+  the file called "COPYING".
+
+  Author: Giuseppe Cavallaro <peppe.cavallaro@st.com>
+*******************************************************************************/
+
+#define GMAC_CONTROL            0x00000000      /* Configuration */
+#define GMAC_FRAME_FILTER       0x00000004      /* Frame Filter */
+#define GMAC_HASH_HIGH          0x00000008      /* Multicast Hash Table High */
+#define GMAC_HASH_LOW           0x0000000c      /* Multicast Hash Table Low */
+#define GMAC_MII_ADDR           0x00000010      /* MII Address */
+#define GMAC_MII_DATA           0x00000014      /* MII Data */
+#define GMAC_FLOW_CTRL          0x00000018      /* Flow Control */
+#define GMAC_VLAN_TAG           0x0000001c      /* VLAN Tag */
+#define GMAC_VERSION            0x00000020      /* GMAC CORE Version */
+#define GMAC_WAKEUP_FILTER      0x00000028      /* Wake-up Frame Filter */
+
+#define GMAC_INT_STATUS         0x00000038      /* interrupt status register */
+enum gmac_irq_status {
+        time_stamp_irq = 0x0200,
+        mmc_rx_csum_offload_irq = 0x0080,
+        mmc_tx_irq = 0x0040,
+        mmc_rx_irq = 0x0020,
+        mmc_irq = 0x0010,
+        pmt_irq = 0x0008,
+        pcs_ane_irq = 0x0004,
+        pcs_link_irq = 0x0002,
+        rgmii_irq = 0x0001,
+};
+#define GMAC_INT_MASK           0x0000003c      /* interrupt mask register */
+
+/* PMT Control and Status */
+#define GMAC_PMT                0x0000002c
+enum power_event {
+        pointer_reset = 0x80000000,
+        global_unicast = 0x00000200,
+        wake_up_rx_frame = 0x00000040,
+        magic_frame = 0x00000020,
+        wake_up_frame_en = 0x00000004,
+        magic_pkt_en = 0x00000002,
+        power_down = 0x00000001,
+};
+
+/* GMAC HW ADDR regs */
+#define GMAC_ADDR_HIGH(reg)             (0x00000040+(reg * 8))
+#define GMAC_ADDR_LOW(reg)              (0x00000044+(reg * 8))
+#define GMAC_MAX_UNICAST_ADDRESSES      16
+
+#define GMAC_AN_CTRL    0x000000c0      /* AN control */
+#define GMAC_AN_STATUS  0x000000c4      /* AN status */
+#define GMAC_ANE_ADV    0x000000c8      /* Auto-Neg. Advertisement */
+#define GMAC_ANE_LINK   0x000000cc      /* Auto-Neg. link partener ability */
+#define GMAC_ANE_EXP    0x000000d0      /* ANE expansion */
+#define GMAC_TBI        0x000000d4      /* TBI extend status */
+#define GMAC_GMII_STATUS 0x000000d8     /* S/R-GMII status */
+
+/* GMAC Configuration defines */
+#define GMAC_CONTROL_TC 0x01000000      /* Transmit Conf. in RGMII/SGMII */
+#define GMAC_CONTROL_WD 0x00800000      /* Disable Watchdog on receive */
+#define GMAC_CONTROL_JD 0x00400000      /* Jabber disable */
+#define GMAC_CONTROL_BE 0x00200000      /* Frame Burst Enable */
+#define GMAC_CONTROL_JE 0x00100000      /* Jumbo frame */
+enum inter_frame_gap {
+        GMAC_CONTROL_IFG_88 = 0x00040000,
+        GMAC_CONTROL_IFG_80 = 0x00020000,
+        GMAC_CONTROL_IFG_40 = 0x000e0000,
+};
+#define GMAC_CONTROL_DCRS       0x00010000 /* Disable carrier sense during tx */
+#define GMAC_CONTROL_PS         0x00008000 /* Port Select 0:GMI 1:MII */
+#define GMAC_CONTROL_FES        0x00004000 /* Speed 0:10 1:100 */
+#define GMAC_CONTROL_DO         0x00002000 /* Disable Rx Own */
+#define GMAC_CONTROL_LM         0x00001000 /* Loop-back mode */
+#define GMAC_CONTROL_DM         0x00000800 /* Duplex Mode */
+#define GMAC_CONTROL_IPC        0x00000400 /* Checksum Offload */
+#define GMAC_CONTROL_DR         0x00000200 /* Disable Retry */
+#define GMAC_CONTROL_LUD        0x00000100 /* Link up/down */
+#define GMAC_CONTROL_ACS        0x00000080 /* Automatic Pad Stripping */
+#define GMAC_CONTROL_DC         0x00000010 /* Deferral Check */
+#define GMAC_CONTROL_TE         0x00000008 /* Transmitter Enable */
+#define GMAC_CONTROL_RE         0x00000004 /* Receiver Enable */
+
+#define GMAC_CORE_INIT (GMAC_CONTROL_JD | GMAC_CONTROL_PS | GMAC_CONTROL_ACS | \
+                        GMAC_CONTROL_IPC | GMAC_CONTROL_JE | GMAC_CONTROL_BE)
+
+/* GMAC Frame Filter defines */
+#define GMAC_FRAME_FILTER_PR    0x00000001      /* Promiscuous Mode */
+#define GMAC_FRAME_FILTER_HUC   0x00000002      /* Hash Unicast */
+#define GMAC_FRAME_FILTER_HMC   0x00000004      /* Hash Multicast */
+#define GMAC_FRAME_FILTER_DAIF  0x00000008      /* DA Inverse Filtering */
+#define GMAC_FRAME_FILTER_PM    0x00000010      /* Pass all multicast */
+#define GMAC_FRAME_FILTER_DBF   0x00000020      /* Disable Broadcast frames */
+#define GMAC_FRAME_FILTER_SAIF  0x00000100      /* Inverse Filtering */
+#define GMAC_FRAME_FILTER_SAF   0x00000200      /* Source Address Filter */
+#define GMAC_FRAME_FILTER_HPF   0x00000400      /* Hash or perfect Filter */
+#define GMAC_FRAME_FILTER_RA    0x80000000      /* Receive all mode */
+/* GMII ADDR  defines */
+#define GMAC_MII_ADDR_WRITE     0x00000002      /* MII Write */
+#define GMAC_MII_ADDR_BUSY      0x00000001      /* MII Busy */
+/* GMAC FLOW CTRL defines */
+#define GMAC_FLOW_CTRL_PT_MASK  0xffff0000      /* Pause Time Mask */
+#define GMAC_FLOW_CTRL_PT_SHIFT 16
+#define GMAC_FLOW_CTRL_RFE      0x00000004      /* Rx Flow Control Enable */
+#define GMAC_FLOW_CTRL_TFE      0x00000002      /* Tx Flow Control Enable */
+#define GMAC_FLOW_CTRL_FCB_BPA  0x00000001      /* Flow Control Busy ... */
+
+/*--- DMA BLOCK defines ---*/
+/* DMA Bus Mode register defines */
+#define DMA_BUS_MODE_SFT_RESET  0x00000001      /* Software Reset */
+#define DMA_BUS_MODE_DA         0x00000002      /* Arbitration scheme */
+#define DMA_BUS_MODE_DSL_MASK   0x0000007c      /* Descriptor Skip Length */
+#define DMA_BUS_MODE_DSL_SHIFT  2       /*   (in DWORDS)      */
+/* Programmable burst length (passed thorugh platform)*/
+#define DMA_BUS_MODE_PBL_MASK   0x00003f00      /* Programmable Burst Len */
+#define DMA_BUS_MODE_PBL_SHIFT  8
+
+enum rx_tx_priority_ratio {
+        double_ratio = 0x00004000,      /*2:1 */
+        triple_ratio = 0x00008000,      /*3:1 */
+        quadruple_ratio = 0x0000c000,   /*4:1 */
+};
+
+#define DMA_BUS_MODE_FB         0x00010000      /* Fixed burst */
+#define DMA_BUS_MODE_RPBL_MASK  0x003e0000      /* Rx-Programmable Burst Len */
+#define DMA_BUS_MODE_RPBL_SHIFT 17
+#define DMA_BUS_MODE_USP        0x00800000
+#define DMA_BUS_MODE_4PBL       0x01000000
+#define DMA_BUS_MODE_AAL        0x02000000
+
+/* DMA CRS Control and Status Register Mapping */
+#define DMA_HOST_TX_DESC          0x00001048    /* Current Host Tx descriptor */
+#define DMA_HOST_RX_DESC          0x0000104c    /* Current Host Rx descriptor */
+/*  DMA Bus Mode register defines */
+#define DMA_BUS_PR_RATIO_MASK     0x0000c000    /* Rx/Tx priority ratio */
+#define DMA_BUS_PR_RATIO_SHIFT    14
+#define DMA_BUS_FB                0x00010000    /* Fixed Burst */
+
+/* DMA operation mode defines (start/stop tx/rx are placed in common header)*/
+#define DMA_CONTROL_DT          0x04000000 /* Disable Drop TCP/IP csum error */
+#define DMA_CONTROL_RSF         0x02000000 /* Receive Store and Forward */
+#define DMA_CONTROL_DFF         0x01000000 /* Disaable flushing */
+/* Theshold for Activating the FC */
+enum rfa {
+        act_full_minus_1 = 0x00800000,
+        act_full_minus_2 = 0x00800200,
+        act_full_minus_3 = 0x00800400,
+        act_full_minus_4 = 0x00800600,
+};
+/* Theshold for Deactivating the FC */
+enum rfd {
+        deac_full_minus_1 = 0x00400000,
+        deac_full_minus_2 = 0x00400800,
+        deac_full_minus_3 = 0x00401000,
+        deac_full_minus_4 = 0x00401800,
+};
+#define DMA_CONTROL_TSF         0x00200000 /* Transmit  Store and Forward */
+#define DMA_CONTROL_FTF         0x00100000 /* Flush transmit FIFO */
+
+enum ttc_control {
+        DMA_CONTROL_TTC_64 = 0x00000000,
+        DMA_CONTROL_TTC_128 = 0x00004000,
+        DMA_CONTROL_TTC_192 = 0x00008000,
+        DMA_CONTROL_TTC_256 = 0x0000c000,
+        DMA_CONTROL_TTC_40 = 0x00010000,
+        DMA_CONTROL_TTC_32 = 0x00014000,
+        DMA_CONTROL_TTC_24 = 0x00018000,
+        DMA_CONTROL_TTC_16 = 0x0001c000,
+};
+#define DMA_CONTROL_TC_TX_MASK  0xfffe3fff
+
+#define DMA_CONTROL_EFC         0x00000100
+#define DMA_CONTROL_FEF         0x00000080
+#define DMA_CONTROL_FUF         0x00000040
+
+enum rtc_control {
+        DMA_CONTROL_RTC_64 = 0x00000000,
+        DMA_CONTROL_RTC_32 = 0x00000008,
+        DMA_CONTROL_RTC_96 = 0x00000010,
+        DMA_CONTROL_RTC_128 = 0x00000018,
+};
+#define DMA_CONTROL_TC_RX_MASK  0xffffffe7
+
+#define DMA_CONTROL_OSF 0x00000004      /* Operate on second frame */
+
+/* MMC registers offset */
+#define GMAC_MMC_CTRL      0x100
+#define GMAC_MMC_RX_INTR   0x104
+#define GMAC_MMC_TX_INTR   0x108
+#define GMAC_MMC_RX_CSUM_OFFLOAD   0x208