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3eeb29972b
For Simple Ethernet frames (802.2 and 802.3) the GMAC Core never strips pad and fcs. This means the ACS has no effect on IPv4/6 frames. The FL bits, in the RDES0, include the FCS so the driver has to remove it in SW. For 802.3 frame format with LLC or LLC-SNAP, when set the ACS bit, the HW strips both PAD and FCS. The FL bits, in the RDES0, actually represents the frame length already stripped. This patch fixes this logic within the device driver that erroneously removed 4byte from 802.3 frames already stripped corrupting the payload. Signed-off-by: Giuseppe Cavallaro <peppe.cavallaro@st.com> Signed-off-by: David S. Miller <davem@davemloft.net>
209 lines
8.1 KiB
C
209 lines
8.1 KiB
C
/*******************************************************************************
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Copyright (C) 2007-2009 STMicroelectronics Ltd
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This program is free software; you can redistribute it and/or modify it
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under the terms and conditions of the GNU General Public License,
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version 2, as published by the Free Software Foundation.
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This program is distributed in the hope it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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more details.
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You should have received a copy of the GNU General Public License along with
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this program; if not, write to the Free Software Foundation, Inc.,
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51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
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The full GNU General Public License is included in this distribution in
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the file called "COPYING".
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Author: Giuseppe Cavallaro <peppe.cavallaro@st.com>
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*******************************************************************************/
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#include <linux/phy.h>
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#include "common.h"
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#define GMAC_CONTROL 0x00000000 /* Configuration */
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#define GMAC_FRAME_FILTER 0x00000004 /* Frame Filter */
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#define GMAC_HASH_HIGH 0x00000008 /* Multicast Hash Table High */
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#define GMAC_HASH_LOW 0x0000000c /* Multicast Hash Table Low */
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#define GMAC_MII_ADDR 0x00000010 /* MII Address */
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#define GMAC_MII_DATA 0x00000014 /* MII Data */
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#define GMAC_FLOW_CTRL 0x00000018 /* Flow Control */
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#define GMAC_VLAN_TAG 0x0000001c /* VLAN Tag */
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#define GMAC_VERSION 0x00000020 /* GMAC CORE Version */
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#define GMAC_WAKEUP_FILTER 0x00000028 /* Wake-up Frame Filter */
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#define GMAC_INT_STATUS 0x00000038 /* interrupt status register */
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enum dwmac1000_irq_status {
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time_stamp_irq = 0x0200,
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mmc_rx_csum_offload_irq = 0x0080,
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mmc_tx_irq = 0x0040,
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mmc_rx_irq = 0x0020,
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mmc_irq = 0x0010,
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pmt_irq = 0x0008,
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pcs_ane_irq = 0x0004,
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pcs_link_irq = 0x0002,
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rgmii_irq = 0x0001,
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};
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#define GMAC_INT_MASK 0x0000003c /* interrupt mask register */
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/* PMT Control and Status */
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#define GMAC_PMT 0x0000002c
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enum power_event {
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pointer_reset = 0x80000000,
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global_unicast = 0x00000200,
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wake_up_rx_frame = 0x00000040,
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magic_frame = 0x00000020,
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wake_up_frame_en = 0x00000004,
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magic_pkt_en = 0x00000002,
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power_down = 0x00000001,
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};
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/* GMAC HW ADDR regs */
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#define GMAC_ADDR_HIGH(reg) (0x00000040+(reg * 8))
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#define GMAC_ADDR_LOW(reg) (0x00000044+(reg * 8))
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#define GMAC_MAX_UNICAST_ADDRESSES 16
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#define GMAC_AN_CTRL 0x000000c0 /* AN control */
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#define GMAC_AN_STATUS 0x000000c4 /* AN status */
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#define GMAC_ANE_ADV 0x000000c8 /* Auto-Neg. Advertisement */
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#define GMAC_ANE_LINK 0x000000cc /* Auto-Neg. link partener ability */
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#define GMAC_ANE_EXP 0x000000d0 /* ANE expansion */
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#define GMAC_TBI 0x000000d4 /* TBI extend status */
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#define GMAC_GMII_STATUS 0x000000d8 /* S/R-GMII status */
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/* GMAC Configuration defines */
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#define GMAC_CONTROL_TC 0x01000000 /* Transmit Conf. in RGMII/SGMII */
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#define GMAC_CONTROL_WD 0x00800000 /* Disable Watchdog on receive */
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#define GMAC_CONTROL_JD 0x00400000 /* Jabber disable */
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#define GMAC_CONTROL_BE 0x00200000 /* Frame Burst Enable */
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#define GMAC_CONTROL_JE 0x00100000 /* Jumbo frame */
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enum inter_frame_gap {
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GMAC_CONTROL_IFG_88 = 0x00040000,
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GMAC_CONTROL_IFG_80 = 0x00020000,
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GMAC_CONTROL_IFG_40 = 0x000e0000,
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};
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#define GMAC_CONTROL_DCRS 0x00010000 /* Disable carrier sense during tx */
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#define GMAC_CONTROL_PS 0x00008000 /* Port Select 0:GMI 1:MII */
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#define GMAC_CONTROL_FES 0x00004000 /* Speed 0:10 1:100 */
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#define GMAC_CONTROL_DO 0x00002000 /* Disable Rx Own */
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#define GMAC_CONTROL_LM 0x00001000 /* Loop-back mode */
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#define GMAC_CONTROL_DM 0x00000800 /* Duplex Mode */
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#define GMAC_CONTROL_IPC 0x00000400 /* Checksum Offload */
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#define GMAC_CONTROL_DR 0x00000200 /* Disable Retry */
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#define GMAC_CONTROL_LUD 0x00000100 /* Link up/down */
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#define GMAC_CONTROL_ACS 0x00000080 /* Automatic Pad/FCS Stripping */
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#define GMAC_CONTROL_DC 0x00000010 /* Deferral Check */
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#define GMAC_CONTROL_TE 0x00000008 /* Transmitter Enable */
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#define GMAC_CONTROL_RE 0x00000004 /* Receiver Enable */
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#define GMAC_CORE_INIT (GMAC_CONTROL_JD | GMAC_CONTROL_PS | GMAC_CONTROL_ACS | \
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GMAC_CONTROL_IPC | GMAC_CONTROL_JE | GMAC_CONTROL_BE)
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/* GMAC Frame Filter defines */
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#define GMAC_FRAME_FILTER_PR 0x00000001 /* Promiscuous Mode */
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#define GMAC_FRAME_FILTER_HUC 0x00000002 /* Hash Unicast */
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#define GMAC_FRAME_FILTER_HMC 0x00000004 /* Hash Multicast */
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#define GMAC_FRAME_FILTER_DAIF 0x00000008 /* DA Inverse Filtering */
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#define GMAC_FRAME_FILTER_PM 0x00000010 /* Pass all multicast */
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#define GMAC_FRAME_FILTER_DBF 0x00000020 /* Disable Broadcast frames */
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#define GMAC_FRAME_FILTER_SAIF 0x00000100 /* Inverse Filtering */
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#define GMAC_FRAME_FILTER_SAF 0x00000200 /* Source Address Filter */
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#define GMAC_FRAME_FILTER_HPF 0x00000400 /* Hash or perfect Filter */
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#define GMAC_FRAME_FILTER_RA 0x80000000 /* Receive all mode */
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/* GMII ADDR defines */
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#define GMAC_MII_ADDR_WRITE 0x00000002 /* MII Write */
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#define GMAC_MII_ADDR_BUSY 0x00000001 /* MII Busy */
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/* GMAC FLOW CTRL defines */
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#define GMAC_FLOW_CTRL_PT_MASK 0xffff0000 /* Pause Time Mask */
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#define GMAC_FLOW_CTRL_PT_SHIFT 16
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#define GMAC_FLOW_CTRL_RFE 0x00000004 /* Rx Flow Control Enable */
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#define GMAC_FLOW_CTRL_TFE 0x00000002 /* Tx Flow Control Enable */
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#define GMAC_FLOW_CTRL_FCB_BPA 0x00000001 /* Flow Control Busy ... */
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/*--- DMA BLOCK defines ---*/
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/* DMA Bus Mode register defines */
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#define DMA_BUS_MODE_SFT_RESET 0x00000001 /* Software Reset */
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#define DMA_BUS_MODE_DA 0x00000002 /* Arbitration scheme */
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#define DMA_BUS_MODE_DSL_MASK 0x0000007c /* Descriptor Skip Length */
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#define DMA_BUS_MODE_DSL_SHIFT 2 /* (in DWORDS) */
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/* Programmable burst length (passed thorugh platform)*/
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#define DMA_BUS_MODE_PBL_MASK 0x00003f00 /* Programmable Burst Len */
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#define DMA_BUS_MODE_PBL_SHIFT 8
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enum rx_tx_priority_ratio {
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double_ratio = 0x00004000, /*2:1 */
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triple_ratio = 0x00008000, /*3:1 */
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quadruple_ratio = 0x0000c000, /*4:1 */
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};
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#define DMA_BUS_MODE_FB 0x00010000 /* Fixed burst */
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#define DMA_BUS_MODE_RPBL_MASK 0x003e0000 /* Rx-Programmable Burst Len */
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#define DMA_BUS_MODE_RPBL_SHIFT 17
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#define DMA_BUS_MODE_USP 0x00800000
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#define DMA_BUS_MODE_4PBL 0x01000000
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#define DMA_BUS_MODE_AAL 0x02000000
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/* DMA CRS Control and Status Register Mapping */
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#define DMA_HOST_TX_DESC 0x00001048 /* Current Host Tx descriptor */
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#define DMA_HOST_RX_DESC 0x0000104c /* Current Host Rx descriptor */
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/* DMA Bus Mode register defines */
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#define DMA_BUS_PR_RATIO_MASK 0x0000c000 /* Rx/Tx priority ratio */
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#define DMA_BUS_PR_RATIO_SHIFT 14
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#define DMA_BUS_FB 0x00010000 /* Fixed Burst */
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/* DMA operation mode defines (start/stop tx/rx are placed in common header)*/
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#define DMA_CONTROL_DT 0x04000000 /* Disable Drop TCP/IP csum error */
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#define DMA_CONTROL_RSF 0x02000000 /* Receive Store and Forward */
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#define DMA_CONTROL_DFF 0x01000000 /* Disaable flushing */
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/* Threshold for Activating the FC */
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enum rfa {
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act_full_minus_1 = 0x00800000,
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act_full_minus_2 = 0x00800200,
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act_full_minus_3 = 0x00800400,
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act_full_minus_4 = 0x00800600,
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};
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/* Threshold for Deactivating the FC */
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enum rfd {
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deac_full_minus_1 = 0x00400000,
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deac_full_minus_2 = 0x00400800,
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deac_full_minus_3 = 0x00401000,
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deac_full_minus_4 = 0x00401800,
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};
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#define DMA_CONTROL_TSF 0x00200000 /* Transmit Store and Forward */
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enum ttc_control {
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DMA_CONTROL_TTC_64 = 0x00000000,
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DMA_CONTROL_TTC_128 = 0x00004000,
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DMA_CONTROL_TTC_192 = 0x00008000,
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DMA_CONTROL_TTC_256 = 0x0000c000,
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DMA_CONTROL_TTC_40 = 0x00010000,
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DMA_CONTROL_TTC_32 = 0x00014000,
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DMA_CONTROL_TTC_24 = 0x00018000,
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DMA_CONTROL_TTC_16 = 0x0001c000,
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};
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#define DMA_CONTROL_TC_TX_MASK 0xfffe3fff
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#define DMA_CONTROL_EFC 0x00000100
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#define DMA_CONTROL_FEF 0x00000080
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#define DMA_CONTROL_FUF 0x00000040
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enum rtc_control {
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DMA_CONTROL_RTC_64 = 0x00000000,
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DMA_CONTROL_RTC_32 = 0x00000008,
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DMA_CONTROL_RTC_96 = 0x00000010,
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DMA_CONTROL_RTC_128 = 0x00000018,
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};
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#define DMA_CONTROL_TC_RX_MASK 0xffffffe7
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#define DMA_CONTROL_OSF 0x00000004 /* Operate on second frame */
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/* MMC registers offset */
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#define GMAC_MMC_CTRL 0x100
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#define GMAC_MMC_RX_INTR 0x104
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#define GMAC_MMC_TX_INTR 0x108
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#define GMAC_MMC_RX_CSUM_OFFLOAD 0x208
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extern struct stmmac_dma_ops dwmac1000_dma_ops;
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