Major PCMCIA Cleanup to make code better readable and maintainable.

Notes:
- Board-dependend code for RPXLITE and RPXCLASSIC-based boards
  placed to the drivers/rpx_pmcia.c file to avoid duplication.
  Same for TQM8xx-based boards (drivers/tqm8xx_pmcia.c).
- drivers/i82365.c has been split into two parts located at
  board/atc/ti113x.c and board/cpc45/pd67290.c (ATC and CPC45 are
  the only boards using CONFIG_82365).
- Changes were tested for clean build and *very* *few* boards.

2 files changed, 371 insertions, 1 deletions

diff --git a/board/netta/Makefile b/board/netta/Makefile
index 68e2402..ee200c2 100644
--- a/board/netta/Makefile
+++ b/board/netta/Makefile
@@ -25,7 +25,7 @@ include $(TOPDIR)/config.mk
 
 LIB	= lib$(BOARD).a
 
-OBJS	= $(BOARD).o flash.o dsp.o codec.o
+OBJS	= $(BOARD).o flash.o dsp.o codec.o pcmcia.o
 
 $(LIB):	.depend $(OBJS)
 	$(AR) crv $@ $(OBJS)
diff --git a/board/netta/pcmcia.c b/board/netta/pcmcia.c
new file mode 100644
index 0000000..a3709f7
--- /dev/null
+++ b/board/netta/pcmcia.c
@@ -0,0 +1,370 @@
+#include <common.h>
+#include <mpc8xx.h>
+#include <pcmcia.h>
+
+#undef	CONFIG_PCMCIA
+
+#if	(CONFIG_COMMANDS & CFG_CMD_PCMCIA)
+#define	CONFIG_PCMCIA
+#endif
+
+#if	(CONFIG_COMMANDS & CFG_CMD_IDE) && defined(CONFIG_IDE_8xx_PCCARD)
+#define	CONFIG_PCMCIA
+#endif
+
+#ifdef	CONFIG_PCMCIA
+
+/* some sane bit macros */
+#define _BD(_b)				(1U << (31-(_b)))
+#define _BDR(_l, _h)			(((((1U << (31-(_l))) - 1) << 1) | 1) & ~((1U << (31-(_h))) - 1))
+
+#define _BW(_b)				(1U << (15-(_b)))
+#define _BWR(_l, _h)			(((((1U << (15-(_l))) - 1) << 1) | 1) & ~((1U << (15-(_h))) - 1))
+
+#define _BB(_b)				(1U << (7-(_b)))
+#define _BBR(_l, _h)			(((((1U << (7-(_l))) - 1) << 1) | 1) & ~((1U << (7-(_h))) - 1))
+
+#define _B(_b)				_BD(_b)
+#define _BR(_l, _h)			_BDR(_l, _h)
+
+#define PCMCIA_BOARD_MSG "NETTA"
+
+static const unsigned short vppd_masks[2] = { _BW(14), _BW(15) };
+
+static void cfg_vppd(int no)
+{
+	volatile immap_t *immap = (immap_t *)CFG_IMMR;
+	unsigned short mask;
+
+	if ((unsigned int)no >= sizeof(vppd_masks)/sizeof(vppd_masks[0]))
+		return;
+
+	mask = vppd_masks[no];
+
+	immap->im_ioport.iop_papar &= ~mask;
+	immap->im_ioport.iop_paodr &= ~mask;
+	immap->im_ioport.iop_padir |=  mask;
+}
+
+static void set_vppd(int no, int what)
+{
+	volatile immap_t *immap = (immap_t *)CFG_IMMR;
+	unsigned short mask;
+
+	if ((unsigned int)no >= sizeof(vppd_masks)/sizeof(vppd_masks[0]))
+		return;
+
+	mask = vppd_masks[no];
+
+	if (what)
+		immap->im_ioport.iop_padat |= mask;
+	else
+		immap->im_ioport.iop_padat &= ~mask;
+}
+
+static const unsigned short vccd_masks[2] = { _BW(10), _BW(6) };
+
+static void cfg_vccd(int no)
+{
+	volatile immap_t *immap = (immap_t *)CFG_IMMR;
+	unsigned short mask;
+
+	if ((unsigned int)no >= sizeof(vccd_masks)/sizeof(vccd_masks[0]))
+		return;
+
+	mask = vccd_masks[no];
+
+	immap->im_ioport.iop_papar &= ~mask;
+	immap->im_ioport.iop_paodr &= ~mask;
+	immap->im_ioport.iop_padir |=  mask;
+}
+
+static void set_vccd(int no, int what)
+{
+	volatile immap_t *immap = (immap_t *)CFG_IMMR;
+	unsigned short mask;
+
+	if ((unsigned int)no >= sizeof(vccd_masks)/sizeof(vccd_masks[0]))
+		return;
+
+	mask = vccd_masks[no];
+
+	if (what)
+		immap->im_ioport.iop_padat |= mask;
+	else
+		immap->im_ioport.iop_padat &= ~mask;
+}
+
+static const unsigned short oc_mask = _BW(8);
+
+static void cfg_oc(void)
+{
+	volatile immap_t *immap = (immap_t *)CFG_IMMR;
+	unsigned short mask = oc_mask;
+
+	immap->im_ioport.iop_pcdir &= ~mask;
+	immap->im_ioport.iop_pcso  &= ~mask;
+	immap->im_ioport.iop_pcint &= ~mask;
+	immap->im_ioport.iop_pcpar &= ~mask;
+}
+
+static int get_oc(void)
+{
+	volatile immap_t *immap = (immap_t *)CFG_IMMR;
+	unsigned short mask = oc_mask;
+	int what;
+
+	what = !!(immap->im_ioport.iop_pcdat & mask);;
+	return what;
+}
+
+static const unsigned short shdn_mask = _BW(12);
+
+static void cfg_shdn(void)
+{
+	volatile immap_t *immap = (immap_t *)CFG_IMMR;
+	unsigned short mask;
+
+	mask = shdn_mask;
+
+	immap->im_ioport.iop_papar &= ~mask;
+	immap->im_ioport.iop_paodr &= ~mask;
+	immap->im_ioport.iop_padir |=  mask;
+}
+
+static void set_shdn(int what)
+{
+	volatile immap_t *immap = (immap_t *)CFG_IMMR;
+	unsigned short mask;
+
+	mask = shdn_mask;
+
+	if (what)
+		immap->im_ioport.iop_padat |= mask;
+	else
+		immap->im_ioport.iop_padat &= ~mask;
+}
+
+static void cfg_ports (void)
+{
+	volatile immap_t	*immap;
+	volatile cpm8xx_t	*cp;
+
+	immap = (immap_t *)CFG_IMMR;
+	cp    = (cpm8xx_t *)(&(((immap_t *)CFG_IMMR)->im_cpm));
+
+
+	cfg_vppd(0); cfg_vppd(1);	/* VPPD0,VPPD1 VAVPP => Hi-Z */
+	cfg_vccd(0); cfg_vccd(1);	/* 3V and 5V off */
+	cfg_shdn();
+	cfg_oc();
+
+	/*
+	* Configure Port A for TPS2211 PC-Card Power-Interface Switch
+	*
+	* Switch off all voltages, assert shutdown
+	*/
+	set_vppd(0, 1); set_vppd(1, 1);
+	set_vccd(0, 0); set_vccd(1, 0);
+	set_shdn(1);
+
+	udelay(100000);
+}
+
+int pcmcia_hardware_enable(int slot)
+{
+	volatile immap_t	*immap;
+	volatile cpm8xx_t	*cp;
+	volatile pcmconf8xx_t	*pcmp;
+	volatile sysconf8xx_t	*sysp;
+	uint reg, pipr, mask;
+	int i;
+
+	debug ("hardware_enable: " PCMCIA_BOARD_MSG " Slot %c\n", 'A'+slot);
+
+	udelay(10000);
+
+	immap = (immap_t *)CFG_IMMR;
+	sysp  = (sysconf8xx_t *)(&(((immap_t *)CFG_IMMR)->im_siu_conf));
+	pcmp  = (pcmconf8xx_t *)(&(((immap_t *)CFG_IMMR)->im_pcmcia));
+	cp    = (cpm8xx_t *)(&(((immap_t *)CFG_IMMR)->im_cpm));
+
+	/* Configure Ports for TPS2211A PC-Card Power-Interface Switch */
+	cfg_ports ();
+
+	/* clear interrupt state, and disable interrupts */
+	pcmp->pcmc_pscr =  PCMCIA_MASK(_slot_);
+	pcmp->pcmc_per &= ~PCMCIA_MASK(_slot_);
+
+	/*
+	* Disable interrupts, DMA, and PCMCIA buffers
+	* (isolate the interface) and assert RESET signal
+	*/
+	debug ("Disable PCMCIA buffers and assert RESET\n");
+	reg  = 0;
+	reg |= __MY_PCMCIA_GCRX_CXRESET;	/* active high */
+	reg |= __MY_PCMCIA_GCRX_CXOE;		/* active low  */
+	PCMCIA_PGCRX(_slot_) = reg;
+
+	udelay(500);
+
+	/*
+	* Make sure there is a card in the slot, then configure the interface.
+	*/
+	udelay(10000);
+	debug ("[%d] %s: PIPR(%p)=0x%x\n",
+	       __LINE__,__FUNCTION__,
+	       &(pcmp->pcmc_pipr),pcmp->pcmc_pipr);
+	if (pcmp->pcmc_pipr & (0x18000000 >> (slot << 4))) {
+		printf ("   No Card found\n");
+		return (1);
+	}
+
+	/*
+	* Power On: Set VAVCC to 3.3V or 5V, set VAVPP to Hi-Z
+	*/
+	mask = PCMCIA_VS1(slot) | PCMCIA_VS2(slot);
+	pipr = pcmp->pcmc_pipr;
+	debug ("PIPR: 0x%x ==> VS1=o%s, VS2=o%s\n",
+	       pipr,
+	       (reg&PCMCIA_VS1(slot))?"n":"ff",
+	       (reg&PCMCIA_VS2(slot))?"n":"ff");
+
+	if ((pipr & mask) == mask) {
+		set_vppd(0, 1); set_vppd(1, 1); 		/* VAVPP => Hi-Z */
+		set_vccd(0, 0); set_vccd(1, 1); 		/* 5V on, 3V off */
+		puts (" 5.0V card found: ");
+	} else {
+		set_vppd(0, 1); set_vppd(1, 1); 		/* VAVPP => Hi-Z */
+		set_vccd(0, 1); set_vccd(1, 0); 		/* 5V off, 3V on */
+		puts (" 3.3V card found: ");
+	}
+
+	/*  Wait 500 ms; use this to check for over-current */
+	for (i=0; i<5000; ++i) {
+		if (!get_oc()) {
+			printf ("   *** Overcurrent - Safety shutdown ***\n");
+			set_vccd(0, 0); set_vccd(1, 0); 		/* VAVPP => Hi-Z */
+			return (1);
+		}
+		udelay (100);
+	}
+
+	debug ("Enable PCMCIA buffers and stop RESET\n");
+	reg  =  PCMCIA_PGCRX(_slot_);
+	reg &= ~__MY_PCMCIA_GCRX_CXRESET;	/* active high */
+	reg &= ~__MY_PCMCIA_GCRX_CXOE;		/* active low  */
+	PCMCIA_PGCRX(_slot_) = reg;
+
+	udelay(250000);	/* some cards need >150 ms to come up :-( */
+
+	debug ("# hardware_enable done\n");
+
+	return (0);
+}
+
+
+#if (CONFIG_COMMANDS & CFG_CMD_PCMCIA)
+int pcmcia_hardware_disable(int slot)
+{
+	volatile immap_t	*immap;
+	volatile pcmconf8xx_t	*pcmp;
+	u_long reg;
+
+	debug ("hardware_disable: " PCMCIA_BOARD_MSG " Slot %c\n", 'A'+slot);
+
+	immap = (immap_t *)CFG_IMMR;
+	pcmp  = (pcmconf8xx_t *)(&(((immap_t *)CFG_IMMR)->im_pcmcia));
+
+	/* Configure PCMCIA General Control Register */
+	debug ("Disable PCMCIA buffers and assert RESET\n");
+	reg  = 0;
+	reg |= __MY_PCMCIA_GCRX_CXRESET;	/* active high */
+	reg |= __MY_PCMCIA_GCRX_CXOE;		/* active low  */
+	PCMCIA_PGCRX(_slot_) = reg;
+
+	/* All voltages off / Hi-Z */
+	set_vppd(0, 1); set_vppd(1, 1);
+	set_vccd(0, 1); set_vccd(1, 1);
+
+	udelay(10000);
+
+	return (0);
+}
+#endif	/* CFG_CMD_PCMCIA */
+
+
+int pcmcia_voltage_set(int slot, int vcc, int vpp)
+{
+	volatile immap_t	*immap;
+	volatile cpm8xx_t	*cp;
+	volatile pcmconf8xx_t	*pcmp;
+	u_long reg;
+	ushort sreg;
+
+	debug ("voltage_set: "
+			PCMCIA_BOARD_MSG
+			" Slot %c, Vcc=%d.%d, Vpp=%d.%d\n",
+	'A'+slot, vcc/10, vcc%10, vpp/10, vcc%10);
+
+	immap = (immap_t *)CFG_IMMR;
+	cp    = (cpm8xx_t *)(&(((immap_t *)CFG_IMMR)->im_cpm));
+	pcmp  = (pcmconf8xx_t *)(&(((immap_t *)CFG_IMMR)->im_pcmcia));
+	/*
+	* Disable PCMCIA buffers (isolate the interface)
+	* and assert RESET signal
+	*/
+	debug ("Disable PCMCIA buffers and assert RESET\n");
+	reg  = PCMCIA_PGCRX(_slot_);
+	reg |= __MY_PCMCIA_GCRX_CXRESET;	/* active high */
+	reg |= __MY_PCMCIA_GCRX_CXOE;		/* active low  */
+	PCMCIA_PGCRX(_slot_) = reg;
+	udelay(500);
+
+	/*
+	* Configure Port C pins for
+	* 5 Volts Enable and 3 Volts enable,
+	* Turn all power pins to Hi-Z
+	*/
+	debug ("PCMCIA power OFF\n");
+	cfg_ports ();	/* Enables switch, but all in Hi-Z */
+
+	sreg  = immap->im_ioport.iop_pcdat;
+	set_vppd(0, 1); set_vppd(1, 1);
+
+	switch(vcc) {
+		case  0:
+			break;	/* Switch off		*/
+
+		case 33:
+			set_vccd(0, 1); set_vccd(1, 0);
+			break;
+
+		case 50:
+			set_vccd(0, 0); set_vccd(1, 1);
+			break;
+
+		default:
+			goto done;
+	}
+
+	/* Checking supported voltages */
+
+	debug ("PIPR: 0x%x --> %s\n",
+	       pcmp->pcmc_pipr,
+	       (pcmp->pcmc_pipr & 0x00008000) ? "only 5 V" : "can do 3.3V");
+
+done:
+			debug ("Enable PCMCIA buffers and stop RESET\n");
+	reg  =  PCMCIA_PGCRX(_slot_);
+	reg &= ~__MY_PCMCIA_GCRX_CXRESET;	/* active high */
+	reg &= ~__MY_PCMCIA_GCRX_CXOE;		/* active low  */
+	PCMCIA_PGCRX(_slot_) = reg;
+	udelay(500);
+
+	debug ("voltage_set: " PCMCIA_BOARD_MSG " Slot %c, DONE\n",
+	       slot+'A');
+	return (0);
+}
+
+#endif	/* CONFIG_PCMCIA */