openwrt-xburst/target/linux/brcm-2.4/files/arch/mips/bcm947xx/include/sbpcie.h

/*
 * BCM43XX SiliconBackplane PCIE core hardware definitions.
 *
 * Copyright 2007, Broadcom Corporation
 * All Rights Reserved.
 * 
 * THIS SOFTWARE IS OFFERED "AS IS", AND BROADCOM GRANTS NO WARRANTIES OF ANY
 * KIND, EXPRESS OR IMPLIED, BY STATUTE, COMMUNICATION OR OTHERWISE. BROADCOM
 * SPECIFICALLY DISCLAIMS ANY IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS
 * FOR A SPECIFIC PURPOSE OR NONINFRINGEMENT CONCERNING THIS SOFTWARE.
 *
 * $Id$
 */

#ifndef	_SBPCIE_H
#define	_SBPCIE_H

/* cpp contortions to concatenate w/arg prescan */
#ifndef PAD
#define	_PADLINE(line)	pad ## line
#define	_XSTR(line)	_PADLINE(line)
#define	PAD		_XSTR(__LINE__)
#endif

/* PCIE Enumeration space offsets */
#define  PCIE_CORE_CONFIG_OFFSET	0x0
#define  PCIE_FUNC0_CONFIG_OFFSET	0x400
#define  PCIE_FUNC1_CONFIG_OFFSET	0x500
#define  PCIE_FUNC2_CONFIG_OFFSET	0x600
#define  PCIE_FUNC3_CONFIG_OFFSET	0x700
#define  PCIE_SPROM_SHADOW_OFFSET	0x800
#define  PCIE_SBCONFIG_OFFSET		0xE00

/* PCIE Bar0 Address Mapping. Each function maps 16KB config space */
#define PCIE_DEV_BAR0_SIZE		0x4000
#define PCIE_BAR0_WINMAPCORE_OFFSET	0x0
#define PCIE_BAR0_EXTSPROM_OFFSET	0x1000
#define PCIE_BAR0_PCIECORE_OFFSET	0x2000
#define PCIE_BAR0_CCCOREREG_OFFSET	0x3000

/* different register spaces to access thr'u pcie indirect access */
#define PCIE_CONFIGREGS 	1		/* Access to config space */
#define PCIE_PCIEREGS 		2		/* Access to pcie registers */

/* SB side: PCIE core and host control registers */
typedef struct sbpcieregs {
	uint32 PAD[3];
	uint32 biststatus;	/* bist Status: 0x00C */
	uint32 gpiosel;		/* PCIE gpio sel: 0x010 */
	uint32 gpioouten;	/* PCIE gpio outen: 0x14 */
	uint32 PAD[4];
	uint32 sbtopcimailbox;	/* sb to pcie mailbox: 0x028 */
	uint32 PAD[54];
	uint32 sbtopcie0;	/* sb to pcie translation 0: 0x100 */
	uint32 sbtopcie1;	/* sb to pcie translation 1: 0x104 */
	uint32 sbtopcie2;	/* sb to pcie translation 2: 0x108 */
	uint32 PAD[4];

	/* pcie core supports in direct access to config space */
	uint32 configaddr;	/* pcie config space access: Address field: 0x120 */
	uint32 configdata;	/* pcie config space access: Data field: 0x124 */

	/* mdio access to serdes */
	uint32 mdiocontrol;	/* controls the mdio access: 0x128 */
	uint32 mdiodata;	/* Data to the mdio access: 0x12c */

	/* pcie protocol phy/dllp/tlp register indirect access mechanism */
	uint32 pcieindaddr;	/* indirect access to the internal register: 0x130 */
	uint32 pcieinddata;	/* Data to/from the internal regsiter: 0x134 */

	uint32 clkreqenctrl;	/* >= rev 6, Clkreq rdma control : 0x138 */
	uint32 PAD[433];
	uint16 sprom[36];	/* SPROM shadow Area */
} sbpcieregs_t;

/* SB to PCIE translation masks */
#define SBTOPCIE0_MASK	0xfc000000
#define SBTOPCIE1_MASK	0xfc000000
#define SBTOPCIE2_MASK	0xc0000000

/* Access type bits (0:1) */
#define SBTOPCIE_MEM	0
#define SBTOPCIE_IO	1
#define SBTOPCIE_CFG0	2
#define SBTOPCIE_CFG1	3

/* Prefetch enable bit 2 */
#define SBTOPCIE_PF		4

/* Write Burst enable for memory write bit 3 */
#define SBTOPCIE_WR_BURST	8

/* config access */
#define CONFIGADDR_FUNC_MASK	0x7000
#define CONFIGADDR_FUNC_SHF	12
#define CONFIGADDR_REG_MASK	0x0FFF
#define CONFIGADDR_REG_SHF	0

/* PCIE protocol regs Indirect Address */
#define PCIEADDR_PROT_MASK	0x300
#define PCIEADDR_PROT_SHF	8
#define PCIEADDR_PL_TLP		0
#define PCIEADDR_PL_DLLP	1
#define PCIEADDR_PL_PLP		2

/* PCIE protocol PHY diagnostic registers */
#define	PCIE_PLP_MODEREG		0x200 /* Mode */
#define	PCIE_PLP_STATUSREG		0x204 /* Status */
#define PCIE_PLP_LTSSMCTRLREG		0x208 /* LTSSM control */
#define PCIE_PLP_LTLINKNUMREG		0x20c /* Link Training Link number */
#define PCIE_PLP_LTLANENUMREG		0x210 /* Link Training Lane number */
#define PCIE_PLP_LTNFTSREG		0x214 /* Link Training N_FTS */
#define PCIE_PLP_ATTNREG		0x218 /* Attention */
#define PCIE_PLP_ATTNMASKREG		0x21C /* Attention Mask */
#define PCIE_PLP_RXERRCTR		0x220 /* Rx Error */
#define PCIE_PLP_RXFRMERRCTR		0x224 /* Rx Framing Error */
#define PCIE_PLP_RXERRTHRESHREG		0x228 /* Rx Error threshold */
#define PCIE_PLP_TESTCTRLREG		0x22C /* Test Control reg */
#define PCIE_PLP_SERDESCTRLOVRDREG	0x230 /* SERDES Control Override */
#define PCIE_PLP_TIMINGOVRDREG		0x234 /* Timing param override */
#define PCIE_PLP_RXTXSMDIAGREG		0x238 /* RXTX State Machine Diag */
#define PCIE_PLP_LTSSMDIAGREG		0x23C /* LTSSM State Machine Diag */

/* PCIE protocol DLLP diagnostic registers */
#define PCIE_DLLP_LCREG			0x100 /* Link Control */
#define PCIE_DLLP_LSREG			0x104 /* Link Status */
#define PCIE_DLLP_LAREG			0x108 /* Link Attention */
#define PCIE_DLLP_LAMASKREG		0x10C /* Link Attention Mask */
#define PCIE_DLLP_NEXTTXSEQNUMREG	0x110 /* Next Tx Seq Num */
#define PCIE_DLLP_ACKEDTXSEQNUMREG	0x114 /* Acked Tx Seq Num */
#define PCIE_DLLP_PURGEDTXSEQNUMREG	0x118 /* Purged Tx Seq Num */
#define PCIE_DLLP_RXSEQNUMREG		0x11C /* Rx Sequence Number */
#define PCIE_DLLP_LRREG			0x120 /* Link Replay */
#define PCIE_DLLP_LACKTOREG		0x124 /* Link Ack Timeout */
#define PCIE_DLLP_PMTHRESHREG		0x128 /* Power Management Threshold */
#define PCIE_DLLP_RTRYWPREG		0x12C /* Retry buffer write ptr */
#define PCIE_DLLP_RTRYRPREG		0x130 /* Retry buffer Read ptr */
#define PCIE_DLLP_RTRYPPREG		0x134 /* Retry buffer Purged ptr */
#define PCIE_DLLP_RTRRWREG		0x138 /* Retry buffer Read/Write */
#define PCIE_DLLP_ECTHRESHREG		0x13C /* Error Count Threshold */
#define PCIE_DLLP_TLPERRCTRREG		0x140 /* TLP Error Counter */
#define PCIE_DLLP_ERRCTRREG		0x144 /* Error Counter */
#define PCIE_DLLP_NAKRXCTRREG		0x148 /* NAK Received Counter */
#define PCIE_DLLP_TESTREG		0x14C /* Test */
#define PCIE_DLLP_PKTBIST		0x150 /* Packet BIST */
#define PCIE_DLLP_PCIE11		0x154 /* DLLP PCIE 1.1 reg */

/* PCIE protocol TLP diagnostic registers */
#define PCIE_TLP_CONFIGREG		0x000 /* Configuration */
#define PCIE_TLP_WORKAROUNDSREG		0x004 /* TLP Workarounds */
#define PCIE_TLP_WRDMAUPPER		0x010 /* Write DMA Upper Address */
#define PCIE_TLP_WRDMALOWER		0x014 /* Write DMA Lower Address */
#define PCIE_TLP_WRDMAREQ_LBEREG	0x018 /* Write DMA Len/ByteEn Req */
#define PCIE_TLP_RDDMAUPPER		0x01C /* Read DMA Upper Address */
#define PCIE_TLP_RDDMALOWER		0x020 /* Read DMA Lower Address */
#define PCIE_TLP_RDDMALENREG		0x024 /* Read DMA Len Req */
#define PCIE_TLP_MSIDMAUPPER		0x028 /* MSI DMA Upper Address */
#define PCIE_TLP_MSIDMALOWER		0x02C /* MSI DMA Lower Address */
#define PCIE_TLP_MSIDMALENREG		0x030 /* MSI DMA Len Req */
#define PCIE_TLP_SLVREQLENREG		0x034 /* Slave Request Len */
#define PCIE_TLP_FCINPUTSREQ		0x038 /* Flow Control Inputs */
#define PCIE_TLP_TXSMGRSREQ		0x03C /* Tx StateMachine and Gated Req */
#define PCIE_TLP_ADRACKCNTARBLEN	0x040 /* Address Ack XferCnt and ARB Len */
#define PCIE_TLP_DMACPLHDR0		0x044 /* DMA Completion Hdr 0 */
#define PCIE_TLP_DMACPLHDR1		0x048 /* DMA Completion Hdr 1 */
#define PCIE_TLP_DMACPLHDR2		0x04C /* DMA Completion Hdr 2 */
#define PCIE_TLP_DMACPLMISC0		0x050 /* DMA Completion Misc0 */
#define PCIE_TLP_DMACPLMISC1		0x054 /* DMA Completion Misc1 */
#define PCIE_TLP_DMACPLMISC2		0x058 /* DMA Completion Misc2 */
#define PCIE_TLP_SPTCTRLLEN		0x05C /* Split Controller Req len */
#define PCIE_TLP_SPTCTRLMSIC0		0x060 /* Split Controller Misc 0 */
#define PCIE_TLP_SPTCTRLMSIC1		0x064 /* Split Controller Misc 1 */
#define PCIE_TLP_BUSDEVFUNC		0x068 /* Bus/Device/Func */
#define PCIE_TLP_RESETCTR		0x06C /* Reset Counter */
#define PCIE_TLP_RTRYBUF		0x070 /* Retry Buffer value */
#define PCIE_TLP_TGTDEBUG1		0x074 /* Target Debug Reg1 */
#define PCIE_TLP_TGTDEBUG2		0x078 /* Target Debug Reg2 */
#define PCIE_TLP_TGTDEBUG3		0x07C /* Target Debug Reg3 */
#define PCIE_TLP_TGTDEBUG4		0x080 /* Target Debug Reg4 */

/* MDIO control */
#define MDIOCTL_DIVISOR_MASK		0x7f	/* clock to be used on MDIO */
#define MDIOCTL_DIVISOR_VAL		0x2
#define MDIOCTL_PREAM_EN		0x80	/* Enable preamble sequnce */
#define MDIOCTL_ACCESS_DONE		0x100   /* Tranaction complete */

/* MDIO Data */
#define MDIODATA_MASK			0x0000ffff	/* data 2 bytes */
#define MDIODATA_TA			0x00020000	/* Turnaround */
#define MDIODATA_REGADDR_SHF		18		/* Regaddr shift */
#define MDIODATA_REGADDR_MASK		0x003c0000	/* Regaddr Mask */
#define MDIODATA_DEVADDR_SHF		22		/* Physmedia devaddr shift */
#define MDIODATA_DEVADDR_MASK		0x0fc00000	/* Physmedia devaddr Mask */
#define MDIODATA_WRITE			0x10000000	/* write Transaction */
#define MDIODATA_READ			0x20000000	/* Read Transaction */
#define MDIODATA_START			0x40000000	/* start of Transaction */

/* MDIO devices (SERDES modules) */
#define MDIODATA_DEV_PLL       		0x1d	/* SERDES PLL Dev */
#define MDIODATA_DEV_TX        		0x1e	/* SERDES TX Dev */
#define MDIODATA_DEV_RX        		0x1f	/* SERDES RX Dev */

/* SERDES RX registers */
#define SERDES_RX_CTRL			1	/* Rx cntrl */
#define SERDES_RX_TIMER1		2	/* Rx Timer1 */
#define SERDES_RX_CDR			6	/* CDR */
#define SERDES_RX_CDRBW			7	/* CDR BW */

/* SERDES RX control register */
#define SERDES_RX_CTRL_FORCE		0x80	/* rxpolarity_force */
#define SERDES_RX_CTRL_POLARITY		0x40	/* rxpolarity_value */

/* SERDES PLL registers */
#define SERDES_PLL_CTRL                 1       /* PLL control reg */
#define PLL_CTRL_FREQDET_EN             0x4000  /* bit 14 is FREQDET on */

#define PCIE_L1THRESHOLDTIME_MASK       0xFF00	/* bits 8 - 15 */
#define PCIE_L1THRESHOLDTIME_SHIFT      8	/* PCIE_L1THRESHOLDTIME_SHIFT */
#define PCIE_L1THRESHOLD_WARVAL         0x72	/* WAR value */

/* SPROM offsets */
#define SRSH_ASPM_OFFSET		4	/* word 4 */
#define SRSH_ASPM_ENB			0x18	/* bit 3, 4 */
#define SRSH_CLKREQ_OFFSET		20	/* word 20 */
#define SRSH_CLKREQ_ENB			0x0800	/* bit 11 */

/* Linkcontrol reg offset in PCIE Cap */
#define PCIE_CAP_LINKCTRL_OFFSET	16	/* linkctrl offset in pcie cap */
#define PCIE_CAP_LCREG_ASPML0s		0x01	/* ASPM L0s in linkctrl */
#define PCIE_CAP_LCREG_ASPML1		0x02	/* ASPM L1 in linkctrl */
#define PCIE_ASPM_ENAB			0x03	/* ASPM L0s & L1 in linkctrl */
#define PCIE_CLKREQ_ENAB		0x100	/* CLKREQ Enab in linkctrl */

/* Status reg PCIE_PLP_STATUSREG */
#define PCIE_PLP_POLARITYINV_STAT	0x10

#endif	/* _SBPCIE_H */