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linux/include/asm-powerpc/pasemi_dma.h
Olof Johansson 8ee9d85779 pasemi: DMA engine management library 
pasemi: DMA engine management library

Introduce a DMA management library to manage the various DMA resources
on the PA Semi SoCs. Since several drivers need to allocate these shared
resources, provide some abstractions as well as allocation/free functions
for channels, etc.

Signed-off-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2008-01-28 15:04:21 -08:00

468 lines
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/*
* Copyright (C) 2006 PA Semi, Inc
*
* Hardware register layout and descriptor formats for the on-board
* DMA engine on PA Semi PWRficient. Used by ethernet, function and security
* drivers.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifndef ASM_PASEMI_DMA_H
#define ASM_PASEMI_DMA_H
/* status register layout in IOB region, at 0xfb800000 */
struct pasdma_status {
u64 rx_sta[64]; /* RX channel status */
u64 tx_sta[20]; /* TX channel status */
};
/* All these registers live in the PCI configuration space for the DMA PCI
* device. Use the normal PCI config access functions for them.
*/
enum {
PAS_DMA_CAP_TXCH = 0x44, /* Transmit Channel Info */
PAS_DMA_CAP_RXCH = 0x48, /* Transmit Channel Info */
PAS_DMA_CAP_IFI = 0x4c, /* Interface Info */
PAS_DMA_COM_TXCMD = 0x100, /* Transmit Command Register */
PAS_DMA_COM_TXSTA = 0x104, /* Transmit Status Register */
PAS_DMA_COM_RXCMD = 0x108, /* Receive Command Register */
PAS_DMA_COM_RXSTA = 0x10c, /* Receive Status Register */
};
#define PAS_DMA_CAP_TXCH_TCHN_M 0x00ff0000 /* # of TX channels */
#define PAS_DMA_CAP_TXCH_TCHN_S 16
#define PAS_DMA_CAP_RXCH_RCHN_M 0x00ff0000 /* # of RX channels */
#define PAS_DMA_CAP_RXCH_RCHN_S 16
#define PAS_DMA_CAP_IFI_IOFF_M 0xff000000 /* Cfg reg for intf pointers */
#define PAS_DMA_CAP_IFI_IOFF_S 24
#define PAS_DMA_CAP_IFI_NIN_M 0x00ff0000 /* # of interfaces */
#define PAS_DMA_CAP_IFI_NIN_S 16
#define PAS_DMA_COM_TXCMD_EN 0x00000001 /* enable */
#define PAS_DMA_COM_TXSTA_ACT 0x00000001 /* active */
#define PAS_DMA_COM_RXCMD_EN 0x00000001 /* enable */
#define PAS_DMA_COM_RXSTA_ACT 0x00000001 /* active */
/* Per-interface and per-channel registers */
#define _PAS_DMA_RXINT_STRIDE 0x20
#define PAS_DMA_RXINT_RCMDSTA(i) (0x200+(i)*_PAS_DMA_RXINT_STRIDE)
#define PAS_DMA_RXINT_RCMDSTA_EN 0x00000001
#define PAS_DMA_RXINT_RCMDSTA_ST 0x00000002
#define PAS_DMA_RXINT_RCMDSTA_MBT 0x00000008
#define PAS_DMA_RXINT_RCMDSTA_MDR 0x00000010
#define PAS_DMA_RXINT_RCMDSTA_MOO 0x00000020
#define PAS_DMA_RXINT_RCMDSTA_MBP 0x00000040
#define PAS_DMA_RXINT_RCMDSTA_BT 0x00000800
#define PAS_DMA_RXINT_RCMDSTA_DR 0x00001000
#define PAS_DMA_RXINT_RCMDSTA_OO 0x00002000
#define PAS_DMA_RXINT_RCMDSTA_BP 0x00004000
#define PAS_DMA_RXINT_RCMDSTA_TB 0x00008000
#define PAS_DMA_RXINT_RCMDSTA_ACT 0x00010000
#define PAS_DMA_RXINT_RCMDSTA_DROPS_M 0xfffe0000
#define PAS_DMA_RXINT_RCMDSTA_DROPS_S 17
#define PAS_DMA_RXINT_CFG(i) (0x204+(i)*_PAS_DMA_RXINT_STRIDE)
#define PAS_DMA_RXINT_CFG_RBP 0x80000000
#define PAS_DMA_RXINT_CFG_ITRR 0x40000000
#define PAS_DMA_RXINT_CFG_DHL_M 0x07000000
#define PAS_DMA_RXINT_CFG_DHL_S 24
#define PAS_DMA_RXINT_CFG_DHL(x) (((x) << PAS_DMA_RXINT_CFG_DHL_S) & \
PAS_DMA_RXINT_CFG_DHL_M)
#define PAS_DMA_RXINT_CFG_ITR 0x00400000
#define PAS_DMA_RXINT_CFG_LW 0x00200000
#define PAS_DMA_RXINT_CFG_L2 0x00100000
#define PAS_DMA_RXINT_CFG_HEN 0x00080000
#define PAS_DMA_RXINT_CFG_WIF 0x00000002
#define PAS_DMA_RXINT_CFG_WIL 0x00000001
#define PAS_DMA_RXINT_INCR(i) (0x210+(i)*_PAS_DMA_RXINT_STRIDE)
#define PAS_DMA_RXINT_INCR_INCR_M 0x0000ffff
#define PAS_DMA_RXINT_INCR_INCR_S 0
#define PAS_DMA_RXINT_INCR_INCR(x) ((x) & 0x0000ffff)
#define PAS_DMA_RXINT_BASEL(i) (0x218+(i)*_PAS_DMA_RXINT_STRIDE)
#define PAS_DMA_RXINT_BASEL_BRBL(x) ((x) & ~0x3f)
#define PAS_DMA_RXINT_BASEU(i) (0x21c+(i)*_PAS_DMA_RXINT_STRIDE)
#define PAS_DMA_RXINT_BASEU_BRBH(x) ((x) & 0xfff)
#define PAS_DMA_RXINT_BASEU_SIZ_M 0x3fff0000 /* # of cache lines worth of buffer ring */
#define PAS_DMA_RXINT_BASEU_SIZ_S 16 /* 0 = 16K */
#define PAS_DMA_RXINT_BASEU_SIZ(x) (((x) << PAS_DMA_RXINT_BASEU_SIZ_S) & \
PAS_DMA_RXINT_BASEU_SIZ_M)
#define _PAS_DMA_TXCHAN_STRIDE 0x20 /* Size per channel */
#define _PAS_DMA_TXCHAN_TCMDSTA 0x300 /* Command / Status */
#define _PAS_DMA_TXCHAN_CFG 0x304 /* Configuration */
#define _PAS_DMA_TXCHAN_DSCRBU 0x308 /* Descriptor BU Allocation */
#define _PAS_DMA_TXCHAN_INCR 0x310 /* Descriptor increment */
#define _PAS_DMA_TXCHAN_CNT 0x314 /* Descriptor count/offset */
#define _PAS_DMA_TXCHAN_BASEL 0x318 /* Descriptor ring base (low) */
#define _PAS_DMA_TXCHAN_BASEU 0x31c /* (high) */
#define PAS_DMA_TXCHAN_TCMDSTA(c) (0x300+(c)*_PAS_DMA_TXCHAN_STRIDE)
#define PAS_DMA_TXCHAN_TCMDSTA_EN 0x00000001 /* Enabled */
#define PAS_DMA_TXCHAN_TCMDSTA_ST 0x00000002 /* Stop interface */
#define PAS_DMA_TXCHAN_TCMDSTA_ACT 0x00010000 /* Active */
#define PAS_DMA_TXCHAN_TCMDSTA_SZ 0x00000800
#define PAS_DMA_TXCHAN_TCMDSTA_DB 0x00000400
#define PAS_DMA_TXCHAN_TCMDSTA_DE 0x00000200
#define PAS_DMA_TXCHAN_TCMDSTA_DA 0x00000100
#define PAS_DMA_TXCHAN_CFG(c) (0x304+(c)*_PAS_DMA_TXCHAN_STRIDE)
#define PAS_DMA_TXCHAN_CFG_TY_IFACE 0x00000000 /* Type = interface */
#define PAS_DMA_TXCHAN_CFG_TATTR_M 0x0000003c
#define PAS_DMA_TXCHAN_CFG_TATTR_S 2
#define PAS_DMA_TXCHAN_CFG_TATTR(x) (((x) << PAS_DMA_TXCHAN_CFG_TATTR_S) & \
PAS_DMA_TXCHAN_CFG_TATTR_M)
#define PAS_DMA_TXCHAN_CFG_WT_M 0x000001c0
#define PAS_DMA_TXCHAN_CFG_WT_S 6
#define PAS_DMA_TXCHAN_CFG_WT(x) (((x) << PAS_DMA_TXCHAN_CFG_WT_S) & \
PAS_DMA_TXCHAN_CFG_WT_M)
#define PAS_DMA_TXCHAN_CFG_TRD 0x00010000 /* translate data */
#define PAS_DMA_TXCHAN_CFG_TRR 0x00008000 /* translate rings */
#define PAS_DMA_TXCHAN_CFG_UP 0x00004000 /* update tx descr when sent */
#define PAS_DMA_TXCHAN_CFG_CL 0x00002000 /* Clean last line */
#define PAS_DMA_TXCHAN_CFG_CF 0x00001000 /* Clean first line */
#define PAS_DMA_TXCHAN_INCR(c) (0x310+(c)*_PAS_DMA_TXCHAN_STRIDE)
#define PAS_DMA_TXCHAN_BASEL(c) (0x318+(c)*_PAS_DMA_TXCHAN_STRIDE)
#define PAS_DMA_TXCHAN_BASEL_BRBL_M 0xffffffc0
#define PAS_DMA_TXCHAN_BASEL_BRBL_S 0
#define PAS_DMA_TXCHAN_BASEL_BRBL(x) (((x) << PAS_DMA_TXCHAN_BASEL_BRBL_S) & \
PAS_DMA_TXCHAN_BASEL_BRBL_M)
#define PAS_DMA_TXCHAN_BASEU(c) (0x31c+(c)*_PAS_DMA_TXCHAN_STRIDE)
#define PAS_DMA_TXCHAN_BASEU_BRBH_M 0x00000fff
#define PAS_DMA_TXCHAN_BASEU_BRBH_S 0
#define PAS_DMA_TXCHAN_BASEU_BRBH(x) (((x) << PAS_DMA_TXCHAN_BASEU_BRBH_S) & \
PAS_DMA_TXCHAN_BASEU_BRBH_M)
/* # of cache lines worth of buffer ring */
#define PAS_DMA_TXCHAN_BASEU_SIZ_M 0x3fff0000
#define PAS_DMA_TXCHAN_BASEU_SIZ_S 16 /* 0 = 16K */
#define PAS_DMA_TXCHAN_BASEU_SIZ(x) (((x) << PAS_DMA_TXCHAN_BASEU_SIZ_S) & \
PAS_DMA_TXCHAN_BASEU_SIZ_M)
#define _PAS_DMA_RXCHAN_STRIDE 0x20 /* Size per channel */
#define _PAS_DMA_RXCHAN_CCMDSTA 0x800 /* Command / Status */
#define _PAS_DMA_RXCHAN_CFG 0x804 /* Configuration */
#define _PAS_DMA_RXCHAN_INCR 0x810 /* Descriptor increment */
#define _PAS_DMA_RXCHAN_CNT 0x814 /* Descriptor count/offset */
#define _PAS_DMA_RXCHAN_BASEL 0x818 /* Descriptor ring base (low) */
#define _PAS_DMA_RXCHAN_BASEU 0x81c /* (high) */
#define PAS_DMA_RXCHAN_CCMDSTA(c) (0x800+(c)*_PAS_DMA_RXCHAN_STRIDE)
#define PAS_DMA_RXCHAN_CCMDSTA_EN 0x00000001 /* Enabled */
#define PAS_DMA_RXCHAN_CCMDSTA_ST 0x00000002 /* Stop interface */
#define PAS_DMA_RXCHAN_CCMDSTA_ACT 0x00010000 /* Active */
#define PAS_DMA_RXCHAN_CCMDSTA_DU 0x00020000
#define PAS_DMA_RXCHAN_CCMDSTA_OD 0x00002000
#define PAS_DMA_RXCHAN_CCMDSTA_FD 0x00001000
#define PAS_DMA_RXCHAN_CCMDSTA_DT 0x00000800
#define PAS_DMA_RXCHAN_CFG(c) (0x804+(c)*_PAS_DMA_RXCHAN_STRIDE)
#define PAS_DMA_RXCHAN_CFG_CTR 0x00000400
#define PAS_DMA_RXCHAN_CFG_HBU_M 0x00000380
#define PAS_DMA_RXCHAN_CFG_HBU_S 7
#define PAS_DMA_RXCHAN_CFG_HBU(x) (((x) << PAS_DMA_RXCHAN_CFG_HBU_S) & \
PAS_DMA_RXCHAN_CFG_HBU_M)
#define PAS_DMA_RXCHAN_INCR(c) (0x810+(c)*_PAS_DMA_RXCHAN_STRIDE)
#define PAS_DMA_RXCHAN_BASEL(c) (0x818+(c)*_PAS_DMA_RXCHAN_STRIDE)
#define PAS_DMA_RXCHAN_BASEL_BRBL_M 0xffffffc0
#define PAS_DMA_RXCHAN_BASEL_BRBL_S 0
#define PAS_DMA_RXCHAN_BASEL_BRBL(x) (((x) << PAS_DMA_RXCHAN_BASEL_BRBL_S) & \
PAS_DMA_RXCHAN_BASEL_BRBL_M)
#define PAS_DMA_RXCHAN_BASEU(c) (0x81c+(c)*_PAS_DMA_RXCHAN_STRIDE)
#define PAS_DMA_RXCHAN_BASEU_BRBH_M 0x00000fff
#define PAS_DMA_RXCHAN_BASEU_BRBH_S 0
#define PAS_DMA_RXCHAN_BASEU_BRBH(x) (((x) << PAS_DMA_RXCHAN_BASEU_BRBH_S) & \
PAS_DMA_RXCHAN_BASEU_BRBH_M)
/* # of cache lines worth of buffer ring */
#define PAS_DMA_RXCHAN_BASEU_SIZ_M 0x3fff0000
#define PAS_DMA_RXCHAN_BASEU_SIZ_S 16 /* 0 = 16K */
#define PAS_DMA_RXCHAN_BASEU_SIZ(x) (((x) << PAS_DMA_RXCHAN_BASEU_SIZ_S) & \
PAS_DMA_RXCHAN_BASEU_SIZ_M)
#define PAS_STATUS_PCNT_M 0x000000000000ffffull
#define PAS_STATUS_PCNT_S 0
#define PAS_STATUS_DCNT_M 0x00000000ffff0000ull
#define PAS_STATUS_DCNT_S 16
#define PAS_STATUS_BPCNT_M 0x0000ffff00000000ull
#define PAS_STATUS_BPCNT_S 32
#define PAS_STATUS_CAUSE_M 0xf000000000000000ull
#define PAS_STATUS_TIMER 0x1000000000000000ull
#define PAS_STATUS_ERROR 0x2000000000000000ull
#define PAS_STATUS_SOFT 0x4000000000000000ull
#define PAS_STATUS_INT 0x8000000000000000ull
#define PAS_IOB_COM_PKTHDRCNT 0x120
#define PAS_IOB_COM_PKTHDRCNT_PKTHDR1_M 0x0fff0000
#define PAS_IOB_COM_PKTHDRCNT_PKTHDR1_S 16
#define PAS_IOB_COM_PKTHDRCNT_PKTHDR0_M 0x00000fff
#define PAS_IOB_COM_PKTHDRCNT_PKTHDR0_S 0
#define PAS_IOB_DMA_RXCH_CFG(i) (0x1100 + (i)*4)
#define PAS_IOB_DMA_RXCH_CFG_CNTTH_M 0x00000fff
#define PAS_IOB_DMA_RXCH_CFG_CNTTH_S 0
#define PAS_IOB_DMA_RXCH_CFG_CNTTH(x) (((x) << PAS_IOB_DMA_RXCH_CFG_CNTTH_S) & \
PAS_IOB_DMA_RXCH_CFG_CNTTH_M)
#define PAS_IOB_DMA_TXCH_CFG(i) (0x1200 + (i)*4)
#define PAS_IOB_DMA_TXCH_CFG_CNTTH_M 0x00000fff
#define PAS_IOB_DMA_TXCH_CFG_CNTTH_S 0
#define PAS_IOB_DMA_TXCH_CFG_CNTTH(x) (((x) << PAS_IOB_DMA_TXCH_CFG_CNTTH_S) & \
PAS_IOB_DMA_TXCH_CFG_CNTTH_M)
#define PAS_IOB_DMA_RXCH_STAT(i) (0x1300 + (i)*4)
#define PAS_IOB_DMA_RXCH_STAT_INTGEN 0x00001000
#define PAS_IOB_DMA_RXCH_STAT_CNTDEL_M 0x00000fff
#define PAS_IOB_DMA_RXCH_STAT_CNTDEL_S 0
#define PAS_IOB_DMA_RXCH_STAT_CNTDEL(x) (((x) << PAS_IOB_DMA_RXCH_STAT_CNTDEL_S) &\
PAS_IOB_DMA_RXCH_STAT_CNTDEL_M)
#define PAS_IOB_DMA_TXCH_STAT(i) (0x1400 + (i)*4)
#define PAS_IOB_DMA_TXCH_STAT_INTGEN 0x00001000
#define PAS_IOB_DMA_TXCH_STAT_CNTDEL_M 0x00000fff
#define PAS_IOB_DMA_TXCH_STAT_CNTDEL_S 0
#define PAS_IOB_DMA_TXCH_STAT_CNTDEL(x) (((x) << PAS_IOB_DMA_TXCH_STAT_CNTDEL_S) &\
PAS_IOB_DMA_TXCH_STAT_CNTDEL_M)
#define PAS_IOB_DMA_RXCH_RESET(i) (0x1500 + (i)*4)
#define PAS_IOB_DMA_RXCH_RESET_PCNT_M 0xffff0000
#define PAS_IOB_DMA_RXCH_RESET_PCNT_S 16
#define PAS_IOB_DMA_RXCH_RESET_PCNT(x) (((x) << PAS_IOB_DMA_RXCH_RESET_PCNT_S) & \
PAS_IOB_DMA_RXCH_RESET_PCNT_M)
#define PAS_IOB_DMA_RXCH_RESET_PCNTRST 0x00000020
#define PAS_IOB_DMA_RXCH_RESET_DCNTRST 0x00000010
#define PAS_IOB_DMA_RXCH_RESET_TINTC 0x00000008
#define PAS_IOB_DMA_RXCH_RESET_DINTC 0x00000004
#define PAS_IOB_DMA_RXCH_RESET_SINTC 0x00000002
#define PAS_IOB_DMA_RXCH_RESET_PINTC 0x00000001
#define PAS_IOB_DMA_TXCH_RESET(i) (0x1600 + (i)*4)
#define PAS_IOB_DMA_TXCH_RESET_PCNT_M 0xffff0000
#define PAS_IOB_DMA_TXCH_RESET_PCNT_S 16
#define PAS_IOB_DMA_TXCH_RESET_PCNT(x) (((x) << PAS_IOB_DMA_TXCH_RESET_PCNT_S) & \
PAS_IOB_DMA_TXCH_RESET_PCNT_M)
#define PAS_IOB_DMA_TXCH_RESET_PCNTRST 0x00000020
#define PAS_IOB_DMA_TXCH_RESET_DCNTRST 0x00000010
#define PAS_IOB_DMA_TXCH_RESET_TINTC 0x00000008
#define PAS_IOB_DMA_TXCH_RESET_DINTC 0x00000004
#define PAS_IOB_DMA_TXCH_RESET_SINTC 0x00000002
#define PAS_IOB_DMA_TXCH_RESET_PINTC 0x00000001
#define PAS_IOB_DMA_COM_TIMEOUTCFG 0x1700
#define PAS_IOB_DMA_COM_TIMEOUTCFG_TCNT_M 0x00ffffff
#define PAS_IOB_DMA_COM_TIMEOUTCFG_TCNT_S 0
#define PAS_IOB_DMA_COM_TIMEOUTCFG_TCNT(x) (((x) << PAS_IOB_DMA_COM_TIMEOUTCFG_TCNT_S) & \
PAS_IOB_DMA_COM_TIMEOUTCFG_TCNT_M)
/* Transmit descriptor fields */
#define XCT_MACTX_T 0x8000000000000000ull
#define XCT_MACTX_ST 0x4000000000000000ull
#define XCT_MACTX_NORES 0x0000000000000000ull
#define XCT_MACTX_8BRES 0x1000000000000000ull
#define XCT_MACTX_24BRES 0x2000000000000000ull
#define XCT_MACTX_40BRES 0x3000000000000000ull
#define XCT_MACTX_I 0x0800000000000000ull
#define XCT_MACTX_O 0x0400000000000000ull
#define XCT_MACTX_E 0x0200000000000000ull
#define XCT_MACTX_VLAN_M 0x0180000000000000ull
#define XCT_MACTX_VLAN_NOP 0x0000000000000000ull
#define XCT_MACTX_VLAN_REMOVE 0x0080000000000000ull
#define XCT_MACTX_VLAN_INSERT 0x0100000000000000ull
#define XCT_MACTX_VLAN_REPLACE 0x0180000000000000ull
#define XCT_MACTX_CRC_M 0x0060000000000000ull
#define XCT_MACTX_CRC_NOP 0x0000000000000000ull
#define XCT_MACTX_CRC_INSERT 0x0020000000000000ull
#define XCT_MACTX_CRC_PAD 0x0040000000000000ull
#define XCT_MACTX_CRC_REPLACE 0x0060000000000000ull
#define XCT_MACTX_SS 0x0010000000000000ull
#define XCT_MACTX_LLEN_M 0x00007fff00000000ull
#define XCT_MACTX_LLEN_S 32ull
#define XCT_MACTX_LLEN(x) ((((long)(x)) << XCT_MACTX_LLEN_S) & \
XCT_MACTX_LLEN_M)
#define XCT_MACTX_IPH_M 0x00000000f8000000ull
#define XCT_MACTX_IPH_S 27ull
#define XCT_MACTX_IPH(x) ((((long)(x)) << XCT_MACTX_IPH_S) & \
XCT_MACTX_IPH_M)
#define XCT_MACTX_IPO_M 0x0000000007c00000ull
#define XCT_MACTX_IPO_S 22ull
#define XCT_MACTX_IPO(x) ((((long)(x)) << XCT_MACTX_IPO_S) & \
XCT_MACTX_IPO_M)
#define XCT_MACTX_CSUM_M 0x0000000000000060ull
#define XCT_MACTX_CSUM_NOP 0x0000000000000000ull
#define XCT_MACTX_CSUM_TCP 0x0000000000000040ull
#define XCT_MACTX_CSUM_UDP 0x0000000000000060ull
#define XCT_MACTX_V6 0x0000000000000010ull
#define XCT_MACTX_C 0x0000000000000004ull
#define XCT_MACTX_AL2 0x0000000000000002ull
/* Receive descriptor fields */
#define XCT_MACRX_T 0x8000000000000000ull
#define XCT_MACRX_ST 0x4000000000000000ull
#define XCT_MACRX_RR_M 0x3000000000000000ull
#define XCT_MACRX_RR_NORES 0x0000000000000000ull
#define XCT_MACRX_RR_8BRES 0x1000000000000000ull
#define XCT_MACRX_O 0x0400000000000000ull
#define XCT_MACRX_E 0x0200000000000000ull
#define XCT_MACRX_FF 0x0100000000000000ull
#define XCT_MACRX_PF 0x0080000000000000ull
#define XCT_MACRX_OB 0x0040000000000000ull
#define XCT_MACRX_OD 0x0020000000000000ull
#define XCT_MACRX_FS 0x0010000000000000ull
#define XCT_MACRX_NB_M 0x000fc00000000000ull
#define XCT_MACRX_NB_S 46ULL
#define XCT_MACRX_NB(x) ((((long)(x)) << XCT_MACRX_NB_S) & \
XCT_MACRX_NB_M)
#define XCT_MACRX_LLEN_M 0x00003fff00000000ull
#define XCT_MACRX_LLEN_S 32ULL
#define XCT_MACRX_LLEN(x) ((((long)(x)) << XCT_MACRX_LLEN_S) & \
XCT_MACRX_LLEN_M)
#define XCT_MACRX_CRC 0x0000000080000000ull
#define XCT_MACRX_LEN_M 0x0000000060000000ull
#define XCT_MACRX_LEN_TOOSHORT 0x0000000020000000ull
#define XCT_MACRX_LEN_BELOWMIN 0x0000000040000000ull
#define XCT_MACRX_LEN_TRUNC 0x0000000060000000ull
#define XCT_MACRX_CAST_M 0x0000000018000000ull
#define XCT_MACRX_CAST_UNI 0x0000000000000000ull
#define XCT_MACRX_CAST_MULTI 0x0000000008000000ull
#define XCT_MACRX_CAST_BROAD 0x0000000010000000ull
#define XCT_MACRX_CAST_PAUSE 0x0000000018000000ull
#define XCT_MACRX_VLC_M 0x0000000006000000ull
#define XCT_MACRX_FM 0x0000000001000000ull
#define XCT_MACRX_HTY_M 0x0000000000c00000ull
#define XCT_MACRX_HTY_IPV4_OK 0x0000000000000000ull
#define XCT_MACRX_HTY_IPV6 0x0000000000400000ull
#define XCT_MACRX_HTY_IPV4_BAD 0x0000000000800000ull
#define XCT_MACRX_HTY_NONIP 0x0000000000c00000ull
#define XCT_MACRX_IPP_M 0x00000000003f0000ull
#define XCT_MACRX_IPP_S 16
#define XCT_MACRX_CSUM_M 0x000000000000ffffull
#define XCT_MACRX_CSUM_S 0
#define XCT_PTR_T 0x8000000000000000ull
#define XCT_PTR_LEN_M 0x7ffff00000000000ull
#define XCT_PTR_LEN_S 44
#define XCT_PTR_LEN(x) ((((long)(x)) << XCT_PTR_LEN_S) & \
XCT_PTR_LEN_M)
#define XCT_PTR_ADDR_M 0x00000fffffffffffull
#define XCT_PTR_ADDR_S 0
#define XCT_PTR_ADDR(x) ((((long)(x)) << XCT_PTR_ADDR_S) & \
XCT_PTR_ADDR_M)
/* Receive interface 8byte result fields */
#define XCT_RXRES_8B_L4O_M 0xff00000000000000ull
#define XCT_RXRES_8B_L4O_S 56
#define XCT_RXRES_8B_RULE_M 0x00ffff0000000000ull
#define XCT_RXRES_8B_RULE_S 40
#define XCT_RXRES_8B_EVAL_M 0x000000ffff000000ull
#define XCT_RXRES_8B_EVAL_S 24
#define XCT_RXRES_8B_HTYPE_M 0x0000000000f00000ull
#define XCT_RXRES_8B_HASH_M 0x00000000000fffffull
#define XCT_RXRES_8B_HASH_S 0
/* Receive interface buffer fields */
#define XCT_RXB_LEN_M 0x0ffff00000000000ull
#define XCT_RXB_LEN_S 44
#define XCT_RXB_LEN(x) ((((long)(x)) << XCT_RXB_LEN_S) & \
XCT_RXB_LEN_M)
#define XCT_RXB_ADDR_M 0x00000fffffffffffull
#define XCT_RXB_ADDR_S 0
#define XCT_RXB_ADDR(x) ((((long)(x)) << XCT_RXB_ADDR_S) & \
XCT_RXB_ADDR_M)
/* Copy descriptor fields */
#define XCT_COPY_T 0x8000000000000000ull
#define XCT_COPY_ST 0x4000000000000000ull
#define XCT_COPY_RR_M 0x3000000000000000ull
#define XCT_COPY_RR_NORES 0x0000000000000000ull
#define XCT_COPY_RR_8BRES 0x1000000000000000ull
#define XCT_COPY_RR_24BRES 0x2000000000000000ull
#define XCT_COPY_RR_40BRES 0x3000000000000000ull
#define XCT_COPY_I 0x0800000000000000ull
#define XCT_COPY_O 0x0400000000000000ull
#define XCT_COPY_E 0x0200000000000000ull
#define XCT_COPY_STY_ZERO 0x01c0000000000000ull
#define XCT_COPY_DTY_PREF 0x0038000000000000ull
#define XCT_COPY_LLEN_M 0x0007ffff00000000ull
#define XCT_COPY_LLEN_S 32
#define XCT_COPY_LLEN(x) ((((long)(x)) << XCT_COPY_LLEN_S) & \
XCT_COPY_LLEN_M)
#define XCT_COPY_SE 0x0000000000000001ull
/* Control descriptor fields */
#define CTRL_CMD_T 0x8000000000000000ull
#define CTRL_CMD_META_EVT 0x2000000000000000ull
#define CTRL_CMD_O 0x0400000000000000ull
#define CTRL_CMD_REG_M 0x000000000000000full
#define CTRL_CMD_REG_S 0
#define CTRL_CMD_REG(x) ((((long)(x)) << CTRL_CMD_REG_S) & \
CTRL_CMD_REG_M)
/* Prototypes for the shared DMA functions in the platform code. */
/* DMA TX Channel type. Right now only limitations used are event types 0/1,
* for event-triggered DMA transactions.
*/
enum pasemi_dmachan_type {
RXCHAN = 0, /* Any RX chan */
TXCHAN = 1, /* Any TX chan */
TXCHAN_EVT0 = 0x1001, /* TX chan in event class 0 (chan 0-9) */
TXCHAN_EVT1 = 0x2001, /* TX chan in event class 1 (chan 10-19) */
};
struct pasemi_dmachan {
int chno; /* Channel number */
enum pasemi_dmachan_type chan_type; /* TX / RX */
u64 *status; /* Ptr to cacheable status */
int irq; /* IRQ used by channel */
unsigned int ring_size; /* size of allocated ring */
dma_addr_t ring_dma; /* DMA address for ring */
u64 *ring_virt; /* Virt address for ring */
void *priv; /* Ptr to start of client struct */
};
/* Read/write the different registers in the I/O Bridge, Ethernet
* and DMA Controller
*/
extern unsigned int pasemi_read_iob_reg(unsigned int reg);
extern void pasemi_write_iob_reg(unsigned int reg, unsigned int val);
extern unsigned int pasemi_read_mac_reg(int intf, unsigned int reg);
extern void pasemi_write_mac_reg(int intf, unsigned int reg, unsigned int val);
extern unsigned int pasemi_read_dma_reg(unsigned int reg);
extern void pasemi_write_dma_reg(unsigned int reg, unsigned int val);
/* Channel management routines */
extern void *pasemi_dma_alloc_chan(enum pasemi_dmachan_type type,
int total_size, int offset);
extern void pasemi_dma_free_chan(struct pasemi_dmachan *chan);
extern void pasemi_dma_start_chan(const struct pasemi_dmachan *chan,
const u32 cmdsta);
extern int pasemi_dma_stop_chan(const struct pasemi_dmachan *chan);
/* Common routines to allocate rings and buffers */
extern int pasemi_dma_alloc_ring(struct pasemi_dmachan *chan, int ring_size);
extern void pasemi_dma_free_ring(struct pasemi_dmachan *chan);
extern void *pasemi_dma_alloc_buf(struct pasemi_dmachan *chan, int size,
dma_addr_t *handle);
extern void pasemi_dma_free_buf(struct pasemi_dmachan *chan, int size,
dma_addr_t *handle);
/* Initialize the library, must be called before any other functions */
extern int pasemi_dma_init(void);
#endif /* ASM_PASEMI_DMA_H */
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