smc91x.h

Linux Kernel 2.6.9 for OMAP1710

/*------------------------------------------------------------------------
 . smc91x.h - macros for SMSC's 91C9x/91C1xx single-chip Ethernet device.
 .
 . Copyright (C) 1996 by Erik Stahlman
 . Copyright (C) 2001 Standard Microsystems Corporation
 .	Developed by Simple Network Magic Corporation
 . Copyright (C) 2003 Monta Vista Software, Inc.
 .	Unified SMC91x driver by Nicolas Pitre
 .
 . 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.
 .
 . 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
 .
 . Information contained in this file was obtained from the LAN91C111
 . manual from SMC.  To get a copy, if you really want one, you can find
 . information under www.smsc.com.
 .
 . Authors
 .	Erik Stahlman		<[e-mail]>
 .	Daris A Nevil		<[e-mail]>
 .	Nicolas Pitre 		<[e-mail]>
 .
 ---------------------------------------------------------------------------*/
#ifndef _SMC91X_H_
#define _SMC91X_H_


/*
 * Define your architecture specific bus configuration parameters here.
 */

#if	defined(CONFIG_SA1100_GRAPHICSCLIENT) || \
	defined(CONFIG_SA1100_PFS168) || \
	defined(CONFIG_SA1100_FLEXANET) || \
	defined(CONFIG_SA1100_GRAPHICSMASTER) || \
	defined(CONFIG_ARCH_LUBBOCK)

/* We can only do 16-bit reads and writes in the static memory space. */
#define SMC_CAN_USE_8BIT	0
#define SMC_CAN_USE_16BIT	1
#define SMC_CAN_USE_32BIT	0
#define SMC_NOWAIT		1

/* The first two address lines aren't connected... */
#define SMC_IO_SHIFT		2

#define SMC_inw(a, r)		readw((a) + (r))
#define SMC_outw(v, a, r)	writew(v, (a) + (r))
#define SMC_insw(a, r, p, l)	readsw((a) + (r), p, l)
#define SMC_outsw(a, r, p, l)	writesw((a) + (r), p, l)

#elif defined(CONFIG_REDWOOD_5) || defined(CONFIG_REDWOOD_6)

/* We can only do 16-bit reads and writes in the static memory space. */
#define SMC_CAN_USE_8BIT	0
#define SMC_CAN_USE_16BIT	1
#define SMC_CAN_USE_32BIT	0
#define SMC_NOWAIT		1

#define SMC_IO_SHIFT		0

#define SMC_inw(a, r)		in_be16((volatile u16 *)((a) + (r)))
#define SMC_outw(v, a, r)	out_be16((volatile u16 *)((a) + (r)), v)
#define SMC_insw(a, r, p, l) 						\
	do {								\
		unsigned long __port = (a) + (r);			\
		u16 *__p = (u16 *)(p);					\
		int __l = (l);						\
		insw(__port, __p, __l);					\
		while (__l > 0) {					\
			*__p = swab16(*__p);				\
			__p++;						\
			__l--;						\
		}							\
	} while (0)
#define SMC_outsw(a, r, p, l) 						\
	do {								\
		unsigned long __port = (a) + (r);			\
		u16 *__p = (u16 *)(p);					\
		int __l = (l);						\
		while (__l > 0) {					\
			/* Believe it or not, the swab isn't needed. */	\
			outw( /* swab16 */ (*__p++), __port);		\
			__l--;						\
		}							\
	} while (0)
#define set_irq_type(irq, type)

#elif defined(CONFIG_SA1100_ASSABET)

#include <asm/arch/neponset.h>

/* We can only do 8-bit reads and writes in the static memory space. */
#define SMC_CAN_USE_8BIT	1
#define SMC_CAN_USE_16BIT	0
#define SMC_CAN_USE_32BIT	0
#define SMC_NOWAIT		1

/* The first two address lines aren't connected... */
#define SMC_IO_SHIFT		2

#define SMC_inb(a, r)		readb((a) + (r))
#define SMC_outb(v, a, r)	writeb(v, (a) + (r))
#define SMC_insb(a, r, p, l)	readsb((a) + (r), p, (l))
#define SMC_outsb(a, r, p, l)	writesb((a) + (r), p, (l))

#elif	defined(CONFIG_ARCH_INNOKOM) || \
	defined(CONFIG_MACH_MAINSTONE) || \
	defined(CONFIG_ARCH_PXA_IDP) || \
	defined(CONFIG_ARCH_RAMSES)

#define SMC_CAN_USE_8BIT	1
#define SMC_CAN_USE_16BIT	1
#define SMC_CAN_USE_32BIT	1
#define SMC_IO_SHIFT		0
#define SMC_NOWAIT		1
#define SMC_USE_PXA_DMA		1

#define SMC_inb(a, r)		readb((a) + (r))
#define SMC_inw(a, r)		readw((a) + (r))
#define SMC_inl(a, r)		readl((a) + (r))
#define SMC_outb(v, a, r)	writeb(v, (a) + (r))
#define SMC_outl(v, a, r)	writel(v, (a) + (r))
#define SMC_insl(a, r, p, l)	readsl((a) + (r), p, l)
#define SMC_outsl(a, r, p, l)	writesl((a) + (r), p, l)

/* We actually can't write halfwords properly if not word aligned */
static inline void
SMC_outw(u16 val, unsigned long ioaddr, int reg)
{
	if (reg & 2) {
		unsigned int v = val << 16;
		v |= readl(ioaddr + (reg & ~2)) & 0xffff;
		writel(v, ioaddr + (reg & ~2));
	} else {
		writew(val, ioaddr + reg);
	}
}

#elif	defined(CONFIG_ARCH_OMAP)

#define INNOVATOR_1610_SMC_GPIO	0
#define OSK_5912_SMC_GPIO	0
#define H3_1710_SMC_GPIO	40

/* We can only do 16-bit reads and writes in the static memory space. */
#define SMC_CAN_USE_8BIT	0
#define SMC_CAN_USE_16BIT	1
#define SMC_CAN_USE_32BIT	0
#define SMC_IO_SHIFT		0
#define SMC_NOWAIT		1

#define SMC_inb(a, r)		readb((a) + (r))
#define SMC_outb(v, a, r)	writeb(v, (a) + (r))
#define SMC_inw(a, r)		readw((a) + (r))
#define SMC_outw(v, a, r)	writew(v, (a) + (r))
#define SMC_insw(a, r, p, l)	readsw((a) + (r), p, l)
#define SMC_outsw(a, r, p, l)	writesw((a) + (r), p, l)
#define SMC_inl(a, r)		readl((a) + (r))
#define SMC_outl(v, a, r)	writel(v, (a) + (r))
#define SMC_insl(a, r, p, l)	readsl((a) + (r), p, l)
#define SMC_outsl(a, r, p, l)	writesl((a) + (r), p, l)

#elif	defined(CONFIG_ISA)

#define SMC_CAN_USE_8BIT	1
#define SMC_CAN_USE_16BIT	1
#define SMC_CAN_USE_32BIT	0

#define SMC_inb(a, r)		inb((a) + (r))
#define SMC_inw(a, r)		inw((a) + (r))
#define SMC_outb(v, a, r)	outb(v, (a) + (r))
#define SMC_outw(v, a, r)	outw(v, (a) + (r))
#define SMC_insw(a, r, p, l)	insw((a) + (r), p, l)
#define SMC_outsw(a, r, p, l)	outsw((a) + (r), p, l)

#elif   defined(CONFIG_M32R)

#define SMC_CAN_USE_8BIT	0
#define SMC_CAN_USE_16BIT	1
#define SMC_CAN_USE_32BIT	0

#define SMC_inb(a, r)		inb((a) + (r) - 0xa0000000)
#define SMC_inw(a, r)		inw((a) + (r) - 0xa0000000)
#define SMC_outb(v, a, r)	outb(v, (a) + (r) - 0xa0000000)
#define SMC_outw(v, a, r)	outw(v, (a) + (r) - 0xa0000000)
#define SMC_insw(a, r, p, l)	insw((a) + (r) - 0xa0000000, p, l)
#define SMC_outsw(a, r, p, l)	outsw((a) + (r) - 0xa0000000, p, l)

#elif defined(CONFIG_ARCH_OMAP24XX)
/* We can only do 16-bit reads and writes in the static memory sp */
#define SMC_CAN_USE_8BIT       0
#define SMC_CAN_USE_16BIT      1
#define SMC_CAN_USE_32BIT      0
#define SMC_IO_SHIFT           0
#define SMC_NOWAIT             1
#define SMC_inb(a, r)          readb((a) + (r))
#define SMC_outb(v, a, r)      writeb(v, (a) + (r))
#define SMC_inw(a, r)          readw((a) + (r))
#define SMC_outw(v, a, r)      writew(v, (a) + (r))
#define SMC_insw(a, r, p, l)   readsw((a) + (r), p, l)
#define SMC_outsw(a, r, p, l)  writesw((a) + (r), p, l)
#define SMC_inl(a, r)          readl((a) + (r))
#define SMC_outl(v, a, r)      writel(v, (a) + (r))
#define SMC_insl(a, r, p, l)   readsl((a) + (r), p, l)
#define SMC_outsl(a, r, p, l)  writesl((a) + (r), p, l)

#else

#define SMC_CAN_USE_8BIT	1
#define SMC_CAN_USE_16BIT	1
#define SMC_CAN_USE_32BIT	1
#define SMC_NOWAIT		1

#define SMC_inb(a, r)		readb((a) + (r))
#define SMC_inw(a, r)		readw((a) + (r))
#define SMC_inl(a, r)		readl((a) + (r))
#define SMC_outb(v, a, r)	writeb(v, (a) + (r))
#define SMC_outw(v, a, r)	writew(v, (a) + (r))
#define SMC_outl(v, a, r)	writel(v, (a) + (r))
#define SMC_insl(a, r, p, l)	readsl((a) + (r), p, l)
#define SMC_outsl(a, r, p, l)	writesl((a) + (r), p, l)

#define RPC_LSA_DEFAULT		RPC_LED_100_10
#define RPC_LSB_DEFAULT		RPC_LED_TX_RX

#endif


#ifdef SMC_USE_PXA_DMA
/*
 * Let's use the DMA engine on the XScale PXA2xx for RX packets. This is
 * always happening in irq context so no need to worry about races.  TX is
 * different and probably not worth it for that reason, and not as critical
 * as RX which can overrun memory and lose packets.
 */
#include <linux/pci.h>
#include <asm/dma.h>

#ifdef SMC_insl
#undef SMC_insl
#define SMC_insl(a, r, p, l) \
	smc_pxa_dma_insl(a, lp->physaddr, r, dev->dma, p, l)
static inline void
smc_pxa_dma_insl(u_long ioaddr, u_long physaddr, int reg, int dma,
		 u_char *buf, int len)
{
	dma_addr_t dmabuf;

	/* fallback if no DMA available */
	if (dma == (unsigned char)-1) {
		readsl(ioaddr + reg, buf, len);
		return;
	}

	/* 64 bit alignment is required for memory to memory DMA */
	if ((long)buf & 4) {
		*((u32 *)buf)++ = SMC_inl(ioaddr, reg);
		len--;
	}

	len *= 4;
	dmabuf = dma_map_single(NULL, buf, len, PCI_DMA_FROMDEVICE);
	DCSR(dma) = DCSR_NODESC;
	DTADR(dma) = dmabuf;
	DSADR(dma) = physaddr + reg;
	DCMD(dma) = (DCMD_INCTRGADDR | DCMD_BURST32 |
		     DCMD_WIDTH4 | (DCMD_LENGTH & len));
	DCSR(dma) = DCSR_NODESC | DCSR_RUN;
	while (!(DCSR(dma) & DCSR_STOPSTATE));
	DCSR(dma) = 0;
	dma_unmap_single(NULL, dmabuf, len, PCI_DMA_FROMDEVICE);
}
#endif

#ifdef SMC_insw
#undef SMC_insw
#define SMC_insw(a, r, p, l) \
	smc_pxa_dma_insw(a, lp->physaddr, r, dev->dma, p, l)
static inline void
smc_pxa_dma_insw(u_long ioaddr, u_long physaddr, int reg, int dma,
		 u_char *buf, int len)
{
	dma_addr_t dmabuf;

	/* fallback if no DMA available */
	if (dma == (unsigned char)-1) {
		readsw(ioaddr + reg, buf, len);
		return;
	}

	/* 64 bit alignment is required for memory to memory DMA */
	while ((long)buf & 6) {
		*((u16 *)buf)++ = SMC_inw(ioaddr, reg);
		len--;
	}

	len *= 2;
	dmabuf = dma_map_single(NULL, buf, len, PCI_DMA_FROMDEVICE);
	DCSR(dma) = DCSR_NODESC;
	DTADR(dma) = dmabuf;
	DSADR(dma) = physaddr + reg;
	DCMD(dma) = (DCMD_INCTRGADDR | DCMD_BURST32 |
		     DCMD_WIDTH2 | (DCMD_LENGTH & len));
	DCSR(dma) = DCSR_NODESC | DCSR_RUN;
	while (!(DCSR(dma) & DCSR_STOPSTATE));
	DCSR(dma) = 0;
	dma_unmap_single(NULL, dmabuf, len, PCI_DMA_FROMDEVICE);
}
#endif

static void
smc_pxa_dma_irq(int dma, void *dummy, struct pt_regs *regs)
{
	DCSR(dma) = 0;
}
#endif  /* SMC_USE_PXA_DMA */


/* Because of bank switching, the LAN91x uses only 16 I/O ports */
#ifndef SMC_IO_SHIFT
#define SMC_IO_SHIFT	0
#endif
#define SMC_IO_EXTENT	(16 << SMC_IO_SHIFT)


/*
 . Bank Select Register:
 .
 .		yyyy yyyy 0000 00xx
 .		xx 		= bank number
 .		yyyy yyyy	= 0x33, for identification purposes.
*/
#define BANK_SELECT		(14 << SMC_IO_SHIFT)


// Transmit Control Register
/* BANK 0  */
#define TCR_REG 	SMC_REG(0x0000, 0)
#define TCR_ENABLE	0x0001	// When 1 we can transmit
#define TCR_LOOP	0x0002	// Controls output pin LBK
#define TCR_FORCOL	0x0004	// When 1 will force a collision
#define TCR_PAD_EN	0x0080	// When 1 will pad tx frames < 64 bytes w/0
#define TCR_NOCRC	0x0100	// When 1 will not append CRC to tx frames
#define TCR_MON_CSN	0x0400	// When 1 tx monitors carrier
#define TCR_FDUPLX    	0x0800  // When 1 enables full duplex operation
#define TCR_STP_SQET	0x1000	// When 1 stops tx if Signal Quality Error
#define TCR_EPH_LOOP	0x2000	// When 1 enables EPH block loopback
#define TCR_SWFDUP	0x8000	// When 1 enables Switched Full Duplex mode

#define TCR_CLEAR	0	/* do NOTHING */
/* the default settings for the TCR register : */
#define TCR_DEFAULT	(TCR_ENABLE | TCR_PAD_EN)


// EPH Status Register
/* BANK 0  */
#define EPH_STATUS_REG	SMC_REG(0x0002, 0)
#define ES_TX_SUC	0x0001	// Last TX was successful
#define ES_SNGL_COL	0x0002	// Single collision detected for last tx
#define ES_MUL_COL	0x0004	// Multiple collisions detected for last tx
#define ES_LTX_MULT	0x0008	// Last tx was a multicast
#define ES_16COL	0x0010	// 16 Collisions Reached
#define ES_SQET		0x0020	// Signal Quality Error Test
#define ES_LTXBRD	0x0040	// Last tx was a broadcast
#define ES_TXDEFR	0x0080	// Transmit Deferred
#define ES_LATCOL	0x0200	// Late collision detected on last tx
#define ES_LOSTCARR	0x0400	// Lost Carrier Sense
#define ES_EXC_DEF	0x0800	// Excessive Deferral
#define ES_CTR_ROL	0x1000	// Counter Roll Over indication
#define ES_LINK_OK	0x4000	// Driven by inverted value of nLNK pin
#define ES_TXUNRN	0x8000	// Tx Underrun


// Receive Control Register
/* BANK 0  */
#define RCR_REG		SMC_REG(0x0004, 0)
#define RCR_RX_ABORT	0x0001	// Set if a rx frame was aborted
#define RCR_PRMS	0x0002	// Enable promiscuous mode
#define RCR_ALMUL	0x0004	// When set accepts all multicast frames
#define RCR_RXEN	0x0100	// IFF this is set, we can receive packets
#define RCR_STRIP_CRC	0x0200	// When set strips CRC from rx packets
#define RCR_ABORT_ENB	0x0200	// When set will abort rx on collision
#define RCR_FILT_CAR	0x0400	// When set filters leading 12 bit s of carrier
#define RCR_SOFTRST	0x8000 	// resets the chip

/* the normal settings for the RCR register : */
#define RCR_DEFAULT	(RCR_STRIP_CRC | RCR_RXEN)
#define RCR_CLEAR	0x0	// set it to a base state


// Counter Register
/* BANK 0  */
#define COUNTER_REG	SMC_REG(0x0006, 0)


// Memory Information Register
/* BANK 0  */
#define MIR_REG		SMC_REG(0x0008, 0)


// Receive/Phy Control Register
/* BANK 0  */
#define RPC_REG		SMC_REG(0x000A, 0)
#define RPC_SPEED	0x2000	// When 1 PHY is in 100Mbps mode.
#define RPC_DPLX	0x1000	// When 1 PHY is in Full-Duplex Mode
#define RPC_ANEG	0x0800	// When 1 PHY is in Auto-Negotiate Mode
#define RPC_LSXA_SHFT	5	// Bits to shift LS2A,LS1A,LS0A to lsb
#define RPC_LSXB_SHFT	2	// Bits to get LS2B,LS1B,LS0B to lsb
#define RPC_LED_100_10	(0x00)	// LED = 100Mbps OR's with 10Mbps link detect
#define RPC_LED_RES	(0x01)	// LED = Reserved
#define RPC_LED_10	(0x02)	// LED = 10Mbps link detect
#define RPC_LED_FD	(0x03)	// LED = Full Duplex Mode
#define RPC_LED_TX_RX	(0x04)	// LED = TX or RX packet occurred
#define RPC_LED_100	(0x05)	// LED = 100Mbps link dectect
#define RPC_LED_TX	(0x06)	// LED = TX packet occurred
#define RPC_LED_RX	(0x07)	// LED = RX packet occurred

#ifndef RPC_LSA_DEFAULT
#define RPC_LSA_DEFAULT	RPC_LED_100
#endif
#ifndef RPC_LSB_DEFAULT
#define RPC_LSB_DEFAULT RPC_LED_FD
#endif

#define RPC_DEFAULT (RPC_ANEG | (RPC_LSA_DEFAULT << RPC_LSXA_SHFT) | (RPC_LSB_DEFAULT << RPC_LSXB_SHFT) | RPC_SPEED | RPC_DPLX)


/* Bank 0 0x0C is reserved */

// Bank Select Register
/* All Banks */
#define BSR_REG		0x000E


// Configuration Reg
/* BANK 1 */
#define CONFIG_REG	SMC_REG(0x0000,	1)
#define CONFIG_EXT_PHY	0x0200	// 1=external MII, 0=internal Phy
#define CONFIG_GPCNTRL	0x0400	// Inverse value drives pin nCNTRL
#define CONFIG_NO_WAIT	0x1000	// When 1 no extra wait states on ISA bus
#define CONFIG_EPH_POWER_EN 0x8000 // When 0 EPH is placed into low power mode.

// Default is powered-up, Internal Phy, Wait States, and pin nCNTRL=low
#define CONFIG_DEFAULT	(CONFIG_EPH_POWER_EN)


// Base Address Register
/* BANK 1 */
#define BASE_REG	SMC_REG(0x0002, 1)