ti113x.c

u-boot-1.1.6 源码包

static int i365_get_status (socket_info_t * s, u_int * value)
{
	u_int status;

	status = i365_get (s, I365_IDENT);
	status = i365_get (s, I365_STATUS);
	*value = ((status & I365_CS_DETECT) == I365_CS_DETECT) ? SS_DETECT : 0;
	if (i365_get (s, I365_INTCTL) & I365_PC_IOCARD) {
		*value |= (status & I365_CS_STSCHG) ? 0 : SS_STSCHG;
	} else {
		*value |= (status & I365_CS_BVD1) ? 0 : SS_BATDEAD;
		*value |= (status & I365_CS_BVD2) ? 0 : SS_BATWARN;
	}
	*value |= (status & I365_CS_WRPROT) ? SS_WRPROT : 0;
	*value |= (status & I365_CS_READY) ? SS_READY : 0;
	*value |= (status & I365_CS_POWERON) ? SS_POWERON : 0;

	status = cb_readl (s, CB_SOCKET_STATE);
	*value |= (status & CB_SS_32BIT) ? SS_CARDBUS : 0;
	*value |= (status & CB_SS_3VCARD) ? SS_3VCARD : 0;
	*value |= (status & CB_SS_XVCARD) ? SS_XVCARD : 0;
	*value |= (status & CB_SS_VSENSE) ? 0 : SS_PENDING;
	/* For now, ignore cards with unsupported voltage keys */
	if (*value & SS_XVCARD)
		*value &= ~(SS_DETECT | SS_3VCARD | SS_XVCARD);

	return 0;
}	/* i365_get_status */

static int i365_set_socket (socket_info_t * s, socket_state_t * state)
{
	u_char reg;

	set_bridge_state (s);

	/* IO card, RESET flag */
	reg = 0;
	reg |= (state->flags & SS_RESET) ? 0 : I365_PC_RESET;
	reg |= (state->flags & SS_IOCARD) ? I365_PC_IOCARD : 0;
	i365_set (s, I365_INTCTL, reg);

	reg = I365_PWR_NORESET;
	if (state->flags & SS_PWR_AUTO)
		reg |= I365_PWR_AUTO;
	if (state->flags & SS_OUTPUT_ENA)
		reg |= I365_PWR_OUT;

	cb_set_power (s, state);
	reg |= i365_get (s, I365_POWER) & (I365_VCC_MASK | I365_VPP1_MASK);

	if (reg != i365_get (s, I365_POWER))
		i365_set (s, I365_POWER, reg);

	return 0;
}	/* i365_set_socket */

/*====================================================================*/

static int i365_set_mem_map (socket_info_t * s, struct pccard_mem_map *mem)
{
	u_short base, i;
	u_char map;

	debug ("i82365: SetMemMap(%d, %#2.2x, %d ns, %#5.5lx-%#5.5lx, %#5.5x)\n",
		mem->map, mem->flags, mem->speed,
		mem->sys_start, mem->sys_stop, mem->card_start);

	map = mem->map;
	if ((map > 4) ||
	    (mem->card_start > 0x3ffffff) ||
	    (mem->sys_start > mem->sys_stop) ||
	    (mem->speed > 1000)) {
		return -1;
	}

	/* Turn off the window before changing anything */
	if (i365_get (s, I365_ADDRWIN) & I365_ENA_MEM (map))
		i365_bclr (s, I365_ADDRWIN, I365_ENA_MEM (map));

	/* Take care of high byte, for PCI controllers */
	i365_set (s, CB_MEM_PAGE (map), mem->sys_start >> 24);

	base = I365_MEM (map);
	i = (mem->sys_start >> 12) & 0x0fff;
	if (mem->flags & MAP_16BIT)
		i |= I365_MEM_16BIT;
	if (mem->flags & MAP_0WS)
		i |= I365_MEM_0WS;
	i365_set_pair (s, base + I365_W_START, i);

	i = (mem->sys_stop >> 12) & 0x0fff;
	switch (mem->speed / CYCLE_TIME) {
	case 0:
		break;
	case 1:
		i |= I365_MEM_WS0;
		break;
	case 2:
		i |= I365_MEM_WS1;
		break;
	default:
		i |= I365_MEM_WS1 | I365_MEM_WS0;
		break;
	}
	i365_set_pair (s, base + I365_W_STOP, i);

	i = ((mem->card_start - mem->sys_start) >> 12) & 0x3fff;
	if (mem->flags & MAP_WRPROT)
		i |= I365_MEM_WRPROT;
	if (mem->flags & MAP_ATTRIB)
		i |= I365_MEM_REG;
	i365_set_pair (s, base + I365_W_OFF, i);

	/* Turn on the window if necessary */
	if (mem->flags & MAP_ACTIVE)
		i365_bset (s, I365_ADDRWIN, I365_ENA_MEM (map));
	return 0;
}	/* i365_set_mem_map */

static int i365_set_io_map (socket_info_t * s, struct pccard_io_map *io)
{
	u_char map, ioctl;

	map = io->map;
	/* comment out: comparison is always false due to limited range of data type */
	if ((map > 1) || /* (io->start > 0xffff) || (io->stop > 0xffff) || */
	    (io->stop < io->start))
		return -1;
	/* Turn off the window before changing anything */
	if (i365_get (s, I365_ADDRWIN) & I365_ENA_IO (map))
		i365_bclr (s, I365_ADDRWIN, I365_ENA_IO (map));
	i365_set_pair (s, I365_IO (map) + I365_W_START, io->start);
	i365_set_pair (s, I365_IO (map) + I365_W_STOP, io->stop);
	ioctl = i365_get (s, I365_IOCTL) & ~I365_IOCTL_MASK (map);
	if (io->speed)
		ioctl |= I365_IOCTL_WAIT (map);
	if (io->flags & MAP_0WS)
		ioctl |= I365_IOCTL_0WS (map);
	if (io->flags & MAP_16BIT)
		ioctl |= I365_IOCTL_16BIT (map);
	if (io->flags & MAP_AUTOSZ)
		ioctl |= I365_IOCTL_IOCS16 (map);
	i365_set (s, I365_IOCTL, ioctl);
	/* Turn on the window if necessary */
	if (io->flags & MAP_ACTIVE)
		i365_bset (s, I365_ADDRWIN, I365_ENA_IO (map));
	return 0;
}	/* i365_set_io_map */

/*====================================================================*/

int i82365_init (void)
{
	u_int val;
	int i;

	if ((socket.dev = pci_find_devices (supported, 0)) < 0) {
		/* Controller not found */
		return 1;
	}
	debug ("i82365 Device Found!\n");

	pci_read_config_dword (socket.dev, PCI_BASE_ADDRESS_0, &socket.cb_phys);
	socket.cb_phys &= ~0xf;

	get_bridge_state (&socket);
	set_bridge_opts (&socket);

	i = i365_get_status (&socket, &val);

	if (val & SS_DETECT) {
		if (val & SS_3VCARD) {
			state.Vcc = state.Vpp = 33;
			puts (" 3.3V card found: ");
		} else if (!(val & SS_XVCARD)) {
			state.Vcc = state.Vpp = 50;
			puts (" 5.0V card found: ");
		} else {
			puts ("i82365: unsupported voltage key\n");
			state.Vcc = state.Vpp = 0;
		}
	} else {
		/* No card inserted */
		puts ("No card\n");
		return 1;
	}

	state.flags = SS_IOCARD | SS_OUTPUT_ENA;
	state.csc_mask = 0;
	state.io_irq = 0;

	i365_set_socket (&socket, &state);

	for (i = 500; i; i--) {
		if ((i365_get (&socket, I365_STATUS) & I365_CS_READY))
			break;
		udelay (1000);
	}

	if (i == 0) {
		/* PC Card not ready for data transfer */
		puts ("i82365 PC Card not ready for data transfer\n");
		return 1;
	}
	debug (" PC Card ready for data transfer: ");

	mem.map = 0;
	mem.flags = MAP_ATTRIB | MAP_ACTIVE;
	mem.speed = 300;
	mem.sys_start = CFG_PCMCIA_MEM_ADDR;
	mem.sys_stop = CFG_PCMCIA_MEM_ADDR + CFG_PCMCIA_MEM_SIZE - 1;
	mem.card_start = 0;
	i365_set_mem_map (&socket, &mem);

	io.map = 0;
	io.flags = MAP_AUTOSZ | MAP_ACTIVE;
	io.speed = 0;
	io.start = 0x0100;
	io.stop = 0x010F;
	i365_set_io_map (&socket, &io);

#ifdef DEBUG
	i82365_dump_regions (socket.dev);
#endif

	return 0;
}

void i82365_exit (void)
{
	io.map = 0;
	io.flags = 0;
	io.speed = 0;
	io.start = 0;
	io.stop = 0x1;

	i365_set_io_map (&socket, &io);

	mem.map = 0;
	mem.flags = 0;
	mem.speed = 0;
	mem.sys_start = 0;
	mem.sys_stop = 0x1000;
	mem.card_start = 0;

	i365_set_mem_map (&socket, &mem);

	socket.state.sysctl &= 0xFFFF00FF;

	state.Vcc = state.Vpp = 0;

	i365_set_socket (&socket, &state);
}

int pcmcia_on (void)
{
	u_int rc;

	debug ("Enable PCMCIA " PCMCIA_SLOT_MSG "\n");

	rc = i82365_init();
	if (rc)
		goto exit;

	rc = check_ide_device(0);
	if (rc == 0)
		goto exit;

	i82365_exit();

exit:
	return rc;
}

#if (CONFIG_COMMANDS & CFG_CMD_PCMCIA)
int pcmcia_off (void)
{
	printf ("Disable PCMCIA " PCMCIA_SLOT_MSG "\n");

	i82365_exit();

	return 0;
}
#endif

/*======================================================================

    Debug stuff

======================================================================*/

#ifdef DEBUG
static void i82365_dump_regions (pci_dev_t dev)
{
	u_int tmp[2];
	u_int *mem = (void *) socket.cb_phys;
	u_char *cis = (void *) CFG_PCMCIA_MEM_ADDR;
	u_char *ide = (void *) (CFG_ATA_BASE_ADDR + CFG_ATA_REG_OFFSET);

	pci_read_config_dword (dev, 0x00, tmp + 0);
	pci_read_config_dword (dev, 0x80, tmp + 1);

	printf ("PCI CONF: %08X ... %08X\n",
		tmp[0], tmp[1]);
	printf ("PCI MEM:  ... %08X ... %08X\n",
		mem[0x8 / 4], mem[0x800 / 4]);
	printf ("CIS:      ...%c%c%c%c%c%c%c%c...\n",
		cis[0x38], cis[0x3a], cis[0x3c], cis[0x3e],
		cis[0x40], cis[0x42], cis[0x44], cis[0x48]);
	printf ("CIS CONF: %02X %02X %02X ...\n",
		cis[0x200], cis[0x202], cis[0x204]);
	printf ("IDE:      %02X %02X %02X %02X %02X %02X %02X %02X\n",
		ide[0], ide[1], ide[2], ide[3],
		ide[4], ide[5], ide[6], ide[7]);
}
#endif	/* DEBUG */

#endif /* CONFIG_I82365 */