pd6729.c

来自「Linux Kernel 2.6.9 for OMAP1710」· C语言 代码 · 共 747 行 · 第 1/2 页

	}

	switch (state->Vcc) {
	case 0:
		break;
	case 33:
		dprintk("setting voltage to Vcc to 3.3V on socket %i\n",
			socket->number);
		reg |= I365_VCC_5V;
		indirect_setbit(socket, PD67_MISC_CTL_1, PD67_MC1_VCC_3V);
		break;
	case 50:
		dprintk("setting voltage to Vcc to 5V on socket %i\n",
			socket->number);
		reg |= I365_VCC_5V;
		indirect_resetbit(socket, PD67_MISC_CTL_1, PD67_MC1_VCC_3V);
		break;
	default:
		dprintk("pd6729: pd6729_set_socket called with invalid VCC power value: %i\n",
			state->Vcc);
		return -EINVAL;
	}

	switch (state->Vpp) {
	case 0:
		dprintk("not setting Vpp on socket %i\n", socket->number);
		break;
	case 33:
	case 50:
		dprintk("setting Vpp to Vcc for socket %i\n", socket->number);
		reg |= I365_VPP1_5V;
		break;
	case 120:
		dprintk("setting Vpp to 12.0\n");
		reg |= I365_VPP1_12V;
		break;
	default:
		dprintk("pd6729: pd6729_set_socket called with invalid VPP power value: %i\n",
			state->Vpp);
		return -EINVAL;
	}

	/* only write if changed */
	if (reg != indirect_read(socket, I365_POWER))
		indirect_write(socket, I365_POWER, reg);

	/* Now, specifiy that all interrupts are to be done as PCI interrupts */
	indirect_write(socket, PD67_EXT_INDEX, PD67_EXT_CTL_1);
	indirect_write(socket, PD67_EXT_DATA, PD67_EC1_INV_MGMT_IRQ | PD67_EC1_INV_CARD_IRQ);

	/* Enable specific interrupt events */

	reg = 0x00;
	if (state->csc_mask & SS_DETECT) {
		reg |= I365_CSC_DETECT;
	}
	if (state->flags & SS_IOCARD) {
		if (state->csc_mask & SS_STSCHG)
			reg |= I365_CSC_STSCHG;
	} else {
		if (state->csc_mask & SS_BATDEAD)
			reg |= I365_CSC_BVD1;
		if (state->csc_mask & SS_BATWARN)
			reg |= I365_CSC_BVD2;
		if (state->csc_mask & SS_READY)
			reg |= I365_CSC_READY;
	}
	reg |= 0x30;	/* management IRQ: PCI INTA# = "irq 3" */
	indirect_write(socket, I365_CSCINT, reg);

	reg = indirect_read(socket, I365_INTCTL);
	reg |= 0x03;	/* card IRQ: PCI INTA# = "irq 3" */
	indirect_write(socket, I365_INTCTL, reg);

	/* now clear the (probably bogus) pending stuff by doing a dummy read */
	(void)indirect_read(socket, I365_CSC);

	return 0;
}

static int pd6729_set_io_map(struct pcmcia_socket *sock, struct pccard_io_map *io)
{
	struct pd6729_socket *socket = container_of(sock, struct pd6729_socket, socket);
	unsigned char map, ioctl;

	map = io->map;

	/* Check error conditions */
	if (map > 1) {
		dprintk("pd6729_set_io_map with invalid map");
		return -EINVAL;
	}

	/* Turn off the window before changing anything */
	if (indirect_read(socket, I365_ADDRWIN) & I365_ENA_IO(map))
		indirect_resetbit(socket, I365_ADDRWIN, I365_ENA_IO(map));

/*	dprintk("set_io_map: Setting range to %x - %x\n", io->start, io->stop);*/

	/* write the new values */
	indirect_write16(socket, I365_IO(map)+I365_W_START, io->start);
	indirect_write16(socket, I365_IO(map)+I365_W_STOP, io->stop);

	ioctl = indirect_read(socket, I365_IOCTL) & ~I365_IOCTL_MASK(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);

	indirect_write(socket, I365_IOCTL, ioctl);

	/* Turn the window back on if needed */
	if (io->flags & MAP_ACTIVE)
		indirect_setbit(socket, I365_ADDRWIN, I365_ENA_IO(map));

	return 0;
}

static int pd6729_set_mem_map(struct pcmcia_socket *sock, struct pccard_mem_map *mem)
{
	struct pd6729_socket *socket = container_of(sock, struct pd6729_socket, socket);
	unsigned short base, i;
	unsigned char map;

	map = mem->map;
	if (map > 4) {
		printk("pd6729_set_mem_map: invalid map");
		return -EINVAL;
	}

	if ((mem->res->start > mem->res->end) || (mem->speed > 1000)) {
		printk("pd6729_set_mem_map: invalid address / speed");
		/* printk("invalid mem map for socket %i : %lx to %lx with a start of %x\n",
			 sock, mem->res->start, mem->res->end, mem->card_start); */
		return -EINVAL;
	}

	/* Turn off the window before changing anything */
	if (indirect_read(socket, I365_ADDRWIN) & I365_ENA_MEM(map))
		indirect_resetbit(socket, I365_ADDRWIN, I365_ENA_MEM(map));

	/* write the start address */
	base = I365_MEM(map);
	i = (mem->res->start >> 12) & 0x0fff;
	if (mem->flags & MAP_16BIT)
		i |= I365_MEM_16BIT;
	if (mem->flags & MAP_0WS)
		i |= I365_MEM_0WS;
	indirect_write16(socket, base + I365_W_START, i);

	/* write the stop address */

	i= (mem->res->end >> 12) & 0x0fff;
	switch (to_cycles(mem->speed)) {
	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;
	}

	indirect_write16(socket, base + I365_W_STOP, i);

	/* Take care of high byte */
	indirect_write(socket, PD67_EXT_INDEX, PD67_MEM_PAGE(map));
	indirect_write(socket, PD67_EXT_DATA, mem->res->start >> 24);

	/* card start */

	i = ((mem->card_start - mem->res->start) >> 12) & 0x3fff;
	if (mem->flags & MAP_WRPROT)
		i |= I365_MEM_WRPROT;
	if (mem->flags & MAP_ATTRIB) {
/*		dprintk("requesting attribute memory for socket %i\n",
			socket->number);*/
		i |= I365_MEM_REG;
	} else {
/*		dprintk("requesting normal memory for socket %i\n",
			socket->number);*/
	}
	indirect_write16(socket, base + I365_W_OFF, i);

	/* Enable the window if necessary */
	if (mem->flags & MAP_ACTIVE)
		indirect_setbit(socket, I365_ADDRWIN, I365_ENA_MEM(map));

	return 0;
}

static int pd6729_suspend(struct pcmcia_socket *sock)
{
	return pd6729_set_socket(sock, &dead_socket);
}

static int pd6729_init(struct pcmcia_socket *sock)
{
	int i;
	struct resource res = { .end = 0x0fff };
	pccard_io_map io = { 0, 0, 0, 0, 1 };
	pccard_mem_map mem = { .res = &res, };

	pd6729_set_socket(sock, &dead_socket);
	for (i = 0; i < 2; i++) {
		io.map = i;
		pd6729_set_io_map(sock, &io);
	}
	for (i = 0; i < 5; i++) {
		mem.map = i;
		pd6729_set_mem_map(sock, &mem);
	}

	return 0;
}


/* the pccard structure and its functions */
static struct pccard_operations pd6729_operations = {
	.init 			= pd6729_init,
	.suspend		= pd6729_suspend,
	.get_status		= pd6729_get_status,
	.get_socket		= pd6729_get_socket,
	.set_socket		= pd6729_set_socket,
	.set_io_map		= pd6729_set_io_map,
	.set_mem_map		= pd6729_set_mem_map,
};

static int __devinit pd6729_pci_probe(struct pci_dev *dev, const struct pci_device_id *id)
{
	int i, j, ret;
	char configbyte;
	struct pd6729_socket *socket;

	socket = kmalloc(sizeof(struct pd6729_socket) * MAX_SOCKETS, GFP_KERNEL);
	if (!socket)
		return -ENOMEM;

	memset(socket, 0, sizeof(struct pd6729_socket) * MAX_SOCKETS);

	if ((ret = pci_enable_device(dev)))
		goto err_out_free_mem;

	printk(KERN_INFO "pd6729: Cirrus PD6729 PCI to PCMCIA Bridge at 0x%lx on irq %d\n",
		pci_resource_start(dev, 0), dev->irq);
	printk(KERN_INFO "pd6729: configured as a %d socket device.\n", MAX_SOCKETS);
 	/*
	 * Since we have no memory BARs some firmware we may not
	 * have had PCI_COMMAND_MEM enabled, yet the device needs
	 * it.
	 */
	pci_read_config_byte(dev, PCI_COMMAND, &configbyte);
	if (!(configbyte & PCI_COMMAND_MEMORY)) {
		printk(KERN_DEBUG "pd6729: Enabling PCI_COMMAND_MEMORY.\n");
		configbyte |= PCI_COMMAND_MEMORY;
		pci_write_config_byte(dev, PCI_COMMAND, configbyte);
	}

	ret = pci_request_regions(dev, "pd6729");
	if (ret) {
		printk(KERN_INFO "pd6729: pci request region failed.\n");
		goto err_out_disable;
	}

	for (i = 0; i < MAX_SOCKETS; i++) {
		socket[i].io_base = pci_resource_start(dev, 0);
		socket[i].socket.features |= SS_CAP_PCCARD;
		socket[i].socket.map_size = 0x1000;
		socket[i].socket.irq_mask = 0;
		socket[i].socket.pci_irq  = dev->irq;
		socket[i].socket.owner = THIS_MODULE;

		socket[i].number = i;

		socket[i].socket.ops = &pd6729_operations;
		socket[i].socket.dev.dev = &dev->dev;
		socket[i].socket.driver_data = &socket[i];
	}

	pci_set_drvdata(dev, socket);

	/* Register the interrupt handler */
	if ((ret = request_irq(dev->irq, pd6729_interrupt, SA_SHIRQ, "pd6729", socket))) {
		printk(KERN_ERR "pd6729: Failed to register irq %d, aborting\n", dev->irq);
		goto err_out_free_res;
	}

	for (i = 0; i < MAX_SOCKETS; i++) {
		ret = pcmcia_register_socket(&socket[i].socket);
		if (ret) {
			printk(KERN_INFO "pd6729: pcmcia_register_socket failed.\n");
			for (j = 0; j < i ; j++)
				pcmcia_unregister_socket(&socket[j].socket);
			goto err_out_free_res2;
		}
	}

	return 0;

 err_out_free_res2:
	free_irq(dev->irq, socket);
 err_out_free_res:
	pci_release_regions(dev);
 err_out_disable:
	pci_disable_device(dev);

 err_out_free_mem:
	kfree(socket);
	return ret;
}

static void __devexit pd6729_pci_remove(struct pci_dev *dev)
{
	int i;
	struct pd6729_socket *socket = pci_get_drvdata(dev);

	for (i = 0; i < MAX_SOCKETS; i++)
		pcmcia_unregister_socket(&socket[i].socket);

	free_irq(dev->irq, socket);
	pci_release_regions(dev);
	pci_disable_device(dev);

	kfree(socket);
}

static int pd6729_socket_suspend(struct pci_dev *dev, u32 state)
{
	return pcmcia_socket_dev_suspend(&dev->dev, state);
}

static int pd6729_socket_resume(struct pci_dev *dev)
{
	return pcmcia_socket_dev_resume(&dev->dev);
}

static struct pci_device_id pd6729_pci_ids[] = {
	{
		.vendor		= PCI_VENDOR_ID_CIRRUS,
		.device		= PCI_DEVICE_ID_CIRRUS_6729,
		.subvendor	= PCI_ANY_ID,
		.subdevice	= PCI_ANY_ID,
	},
	{ }
};
MODULE_DEVICE_TABLE(pci, pd6729_pci_ids);

static struct pci_driver pd6729_pci_drv = {
	.name		= "pd6729",
	.id_table	= pd6729_pci_ids,
	.probe		= pd6729_pci_probe,
	.remove		= __devexit_p(pd6729_pci_remove),
	.suspend	= pd6729_socket_suspend,
	.resume		= pd6729_socket_resume,
};

static int pd6729_module_init(void)
{
	return pci_module_init(&pd6729_pci_drv);
}

static void pd6729_module_exit(void)
{
	pci_unregister_driver(&pd6729_pci_drv);
}

module_init(pd6729_module_init);
module_exit(pd6729_module_exit);