8250_pci.c

来自「Linux Kernel 2.6.9 for OMAP1710」· C语言 代码 · 共 2,238 行 · 第 1/4 页

	switch (idx) {
	case 0:
		bar = 1;
		break;
	case 1:
		bar = 2;
		break;
	default:
		bar = 4;
		offset = (idx - 2) * board->uart_offset;
	}

	return setup_port(dev, req, bar, offset, board->reg_shift);
}

static int __devinit pci_xircom_init(struct pci_dev *dev)
{
	msleep(100);
	return 0;
}

static int
pci_default_setup(struct pci_dev *dev, struct pci_board *board,
		  struct serial_struct *req, int idx)
{
	unsigned int bar, offset = board->first_offset, maxnr;

	bar = FL_GET_BASE(board->flags);
	if (board->flags & FL_BASE_BARS)
		bar += idx;
	else
		offset += idx * board->uart_offset;

	maxnr = (pci_resource_len(dev, bar) - board->first_offset) /
		(8 << board->reg_shift);

	if (board->flags & FL_REGION_SZ_CAP && idx >= maxnr)
		return 1;
			
	return setup_port(dev, req, bar, offset, board->reg_shift);
}

/* This should be in linux/pci_ids.h */
#define PCI_VENDOR_ID_SBSMODULARIO	0x124B
#define PCI_SUBVENDOR_ID_SBSMODULARIO	0x124B
#define PCI_DEVICE_ID_OCTPRO		0x0001
#define PCI_SUBDEVICE_ID_OCTPRO232	0x0108
#define PCI_SUBDEVICE_ID_OCTPRO422	0x0208
#define PCI_SUBDEVICE_ID_POCTAL232	0x0308
#define PCI_SUBDEVICE_ID_POCTAL422	0x0408

/*
 * Master list of serial port init/setup/exit quirks.
 * This does not describe the general nature of the port.
 * (ie, baud base, number and location of ports, etc)
 *
 * This list is ordered alphabetically by vendor then device.
 * Specific entries must come before more generic entries.
 */
static struct pci_serial_quirk pci_serial_quirks[] = {
	/*
	 * AFAVLAB cards.
	 *  It is not clear whether this applies to all products.
	 */
	{
		.vendor		= PCI_VENDOR_ID_AFAVLAB,
		.device		= PCI_ANY_ID,
		.subvendor	= PCI_ANY_ID,
		.subdevice	= PCI_ANY_ID,
		.setup		= afavlab_setup,
	},
	/*
	 * HP Diva
	 */
	{
		.vendor		= PCI_VENDOR_ID_HP,
		.device		= PCI_DEVICE_ID_HP_DIVA,
		.subvendor	= PCI_ANY_ID,
		.subdevice	= PCI_ANY_ID,
		.init		= pci_hp_diva_init,
		.setup		= pci_hp_diva_setup,
	},
	/*
	 * Intel
	 */
	{
		.vendor		= PCI_VENDOR_ID_INTEL,
		.device		= PCI_DEVICE_ID_INTEL_80960_RP,
		.subvendor	= 0xe4bf,
		.subdevice	= PCI_ANY_ID,
		.init		= pci_inteli960ni_init,
		.setup		= pci_default_setup,
	},
	/*
	 * Panacom
	 */
	{
		.vendor		= PCI_VENDOR_ID_PANACOM,
		.device		= PCI_DEVICE_ID_PANACOM_QUADMODEM,
		.subvendor	= PCI_ANY_ID,
		.subdevice	= PCI_ANY_ID,
		.init		= pci_plx9050_init,
		.setup		= pci_default_setup,
		.exit		= __devexit_p(pci_plx9050_exit),
	},		
	{
		.vendor		= PCI_VENDOR_ID_PANACOM,
		.device		= PCI_DEVICE_ID_PANACOM_DUALMODEM,
		.subvendor	= PCI_ANY_ID,
		.subdevice	= PCI_ANY_ID,
		.init		= pci_plx9050_init,
		.setup		= pci_default_setup,
		.exit		= __devexit_p(pci_plx9050_exit),
	},
	/*
	 * PLX
	 */
	{
		.vendor		= PCI_VENDOR_ID_PLX,
		.device		= PCI_DEVICE_ID_PLX_9050,
		.subvendor	= PCI_SUBVENDOR_ID_KEYSPAN,
		.subdevice	= PCI_SUBDEVICE_ID_KEYSPAN_SX2,
		.init		= pci_plx9050_init,
		.setup		= pci_default_setup,
		.exit		= __devexit_p(pci_plx9050_exit),
	},
	{
		.vendor		= PCI_VENDOR_ID_PLX,
		.device		= PCI_DEVICE_ID_PLX_ROMULUS,
		.subvendor	= PCI_VENDOR_ID_PLX,
		.subdevice	= PCI_DEVICE_ID_PLX_ROMULUS,
		.init		= pci_plx9050_init,
		.setup		= pci_default_setup,
		.exit		= __devexit_p(pci_plx9050_exit),
	},
	/*
	 * SBS Technologies, Inc., PMC-OCTALPRO 232
	 */
	{
		.vendor		= PCI_VENDOR_ID_SBSMODULARIO,
		.device		= PCI_DEVICE_ID_OCTPRO,
		.subvendor	= PCI_SUBVENDOR_ID_SBSMODULARIO,
		.subdevice	= PCI_SUBDEVICE_ID_OCTPRO232,
		.init		= sbs_init,
		.setup		= sbs_setup,
		.exit		= __devexit_p(sbs_exit),
	},
	/*
	 * SBS Technologies, Inc., PMC-OCTALPRO 422
	 */
	{
		.vendor		= PCI_VENDOR_ID_SBSMODULARIO,
		.device		= PCI_DEVICE_ID_OCTPRO,
		.subvendor	= PCI_SUBVENDOR_ID_SBSMODULARIO,
		.subdevice	= PCI_SUBDEVICE_ID_OCTPRO422,
		.init		= sbs_init,
		.setup		= sbs_setup,
		.exit		= __devexit_p(sbs_exit),
	},
	/*
	 * SBS Technologies, Inc., P-Octal 232
	 */
	{
		.vendor		= PCI_VENDOR_ID_SBSMODULARIO,
		.device		= PCI_DEVICE_ID_OCTPRO,
		.subvendor	= PCI_SUBVENDOR_ID_SBSMODULARIO,
		.subdevice	= PCI_SUBDEVICE_ID_POCTAL232,
		.init		= sbs_init,
		.setup		= sbs_setup,
		.exit		= __devexit_p(sbs_exit),
	},
	/*
	 * SBS Technologies, Inc., P-Octal 422
	 */
	{
		.vendor		= PCI_VENDOR_ID_SBSMODULARIO,
		.device		= PCI_DEVICE_ID_OCTPRO,
		.subvendor	= PCI_SUBVENDOR_ID_SBSMODULARIO,
		.subdevice	= PCI_SUBDEVICE_ID_POCTAL422,
		.init		= sbs_init,
		.setup		= sbs_setup,
		.exit		= __devexit_p(sbs_exit),
	},

	/*
	 * SIIG cards.
	 *  It is not clear whether these could be collapsed.
	 */
	{
		.vendor		= PCI_VENDOR_ID_SIIG,
		.device		= PCI_DEVICE_ID_SIIG_1S_10x_550,
		.subvendor	= PCI_ANY_ID,
		.subdevice	= PCI_ANY_ID,
		.init		= pci_siig10x_init,
		.setup		= pci_default_setup,
	},
	{
		.vendor		= PCI_VENDOR_ID_SIIG,
		.device		= PCI_DEVICE_ID_SIIG_1S_10x_650,
		.subvendor	= PCI_ANY_ID,
		.subdevice	= PCI_ANY_ID,
		.init		= pci_siig10x_init,
		.setup		= pci_default_setup,
	},
	{
		.vendor		= PCI_VENDOR_ID_SIIG,
		.device		= PCI_DEVICE_ID_SIIG_1S_10x_850,
		.subvendor	= PCI_ANY_ID,
		.subdevice	= PCI_ANY_ID,
		.init		= pci_siig10x_init,
		.setup		= pci_default_setup,
	},
	{
		.vendor		= PCI_VENDOR_ID_SIIG,
		.device		= PCI_DEVICE_ID_SIIG_2S_10x_550,
		.subvendor	= PCI_ANY_ID,
		.subdevice	= PCI_ANY_ID,
		.init		= pci_siig10x_init,
		.setup		= pci_default_setup,
	},
	{
		.vendor		= PCI_VENDOR_ID_SIIG,
		.device		= PCI_DEVICE_ID_SIIG_2S_10x_650,
		.subvendor	= PCI_ANY_ID,
		.subdevice	= PCI_ANY_ID,
		.init		= pci_siig10x_init,
		.setup		= pci_default_setup,
	},
	{
		.vendor		= PCI_VENDOR_ID_SIIG,
		.device		= PCI_DEVICE_ID_SIIG_2S_10x_850,
		.subvendor	= PCI_ANY_ID,
		.subdevice	= PCI_ANY_ID,
		.init		= pci_siig10x_init,
		.setup		= pci_default_setup,
	},
	{
		.vendor		= PCI_VENDOR_ID_SIIG,
		.device		= PCI_DEVICE_ID_SIIG_4S_10x_550,
		.subvendor	= PCI_ANY_ID,
		.subdevice	= PCI_ANY_ID,
		.init		= pci_siig10x_init,
		.setup		= pci_default_setup,
	},
	{
		.vendor		= PCI_VENDOR_ID_SIIG,
		.device		= PCI_DEVICE_ID_SIIG_4S_10x_650,
		.subvendor	= PCI_ANY_ID,
		.subdevice	= PCI_ANY_ID,
		.init		= pci_siig10x_init,
		.setup		= pci_default_setup,
	},
	{
		.vendor		= PCI_VENDOR_ID_SIIG,
		.device		= PCI_DEVICE_ID_SIIG_4S_10x_850,
		.subvendor	= PCI_ANY_ID,
		.subdevice	= PCI_ANY_ID,
		.init		= pci_siig10x_init,
		.setup		= pci_default_setup,
	},
	{
		.vendor		= PCI_VENDOR_ID_SIIG,
		.device		= PCI_DEVICE_ID_SIIG_1S_20x_550,
		.subvendor	= PCI_ANY_ID,
		.subdevice	= PCI_ANY_ID,
		.init		= pci_siig20x_init,
		.setup		= pci_default_setup,
	},
	{
		.vendor		= PCI_VENDOR_ID_SIIG,
		.device		= PCI_DEVICE_ID_SIIG_1S_20x_650,
		.subvendor	= PCI_ANY_ID,
		.subdevice	= PCI_ANY_ID,
		.init		= pci_siig20x_init,
		.setup		= pci_default_setup,
	},
	{
		.vendor		= PCI_VENDOR_ID_SIIG,
		.device		= PCI_DEVICE_ID_SIIG_1S_20x_850,
		.subvendor	= PCI_ANY_ID,
		.subdevice	= PCI_ANY_ID,
		.init		= pci_siig20x_init,
		.setup		= pci_default_setup,
	},
	{
		.vendor		= PCI_VENDOR_ID_SIIG,
		.device		= PCI_DEVICE_ID_SIIG_2S_20x_550,
		.subvendor	= PCI_ANY_ID,
		.subdevice	= PCI_ANY_ID,
		.init		= pci_siig20x_init,
		.setup		= pci_default_setup,
	},
	{	.vendor		= PCI_VENDOR_ID_SIIG,
		.device		= PCI_DEVICE_ID_SIIG_2S_20x_650,
		.subvendor	= PCI_ANY_ID,
		.subdevice	= PCI_ANY_ID,
		.init		= pci_siig20x_init,
		.setup		= pci_default_setup,
	},
	{
		.vendor		= PCI_VENDOR_ID_SIIG,
		.device		= PCI_DEVICE_ID_SIIG_2S_20x_850,
		.subvendor	= PCI_ANY_ID,
		.subdevice	= PCI_ANY_ID,
		.init		= pci_siig20x_init,
		.setup		= pci_default_setup,
	},
	{
		.vendor		= PCI_VENDOR_ID_SIIG,
		.device		= PCI_DEVICE_ID_SIIG_4S_20x_550,
		.subvendor	= PCI_ANY_ID,
		.subdevice	= PCI_ANY_ID,
		.init		= pci_siig20x_init,
		.setup		= pci_default_setup,
	},
	{
		.vendor		= PCI_VENDOR_ID_SIIG,
		.device		= PCI_DEVICE_ID_SIIG_4S_20x_650,
		.subvendor	= PCI_ANY_ID,
		.subdevice	= PCI_ANY_ID,
		.init		= pci_siig20x_init,
		.setup		= pci_default_setup,
	},
	{
		.vendor		= PCI_VENDOR_ID_SIIG,
		.device		= PCI_DEVICE_ID_SIIG_4S_20x_850,
		.subvendor	= PCI_ANY_ID,
		.subdevice	= PCI_ANY_ID,
		.init		= pci_siig20x_init,
		.setup		= pci_default_setup,
	},
	/*
	 * Titan cards
	 */
	{
		.vendor		= PCI_VENDOR_ID_TITAN,
		.device		= PCI_DEVICE_ID_TITAN_400L,
		.subvendor	= PCI_ANY_ID,
		.subdevice	= PCI_ANY_ID,
		.setup		= titan_400l_800l_setup,
	},
	{
		.vendor		= PCI_VENDOR_ID_TITAN,
		.device		= PCI_DEVICE_ID_TITAN_800L,
		.subvendor	= PCI_ANY_ID,
		.subdevice	= PCI_ANY_ID,
		.setup		= titan_400l_800l_setup,
	},
	/*
	 * Timedia cards
	 */
	{
		.vendor		= PCI_VENDOR_ID_TIMEDIA,
		.device		= PCI_DEVICE_ID_TIMEDIA_1889,
		.subvendor	= PCI_VENDOR_ID_TIMEDIA,
		.subdevice	= PCI_ANY_ID,
		.init		= pci_timedia_init,
		.setup		= pci_timedia_setup,
	},
	{
		.vendor		= PCI_VENDOR_ID_TIMEDIA,
		.device		= PCI_ANY_ID,
		.subvendor	= PCI_ANY_ID,
		.subdevice	= PCI_ANY_ID,
		.setup		= pci_timedia_setup,
	},
	/*
	 * Xircom cards
	 */
	{
		.vendor		= PCI_VENDOR_ID_XIRCOM,
		.device		= PCI_DEVICE_ID_XIRCOM_X3201_MDM,
		.subvendor	= PCI_ANY_ID,
		.subdevice	= PCI_ANY_ID,
		.init		= pci_xircom_init,
		.setup		= pci_default_setup,
	},
	/*
	 * Default "match everything" terminator entry
	 */
	{
		.vendor		= PCI_ANY_ID,
		.device		= PCI_ANY_ID,
		.subvendor	= PCI_ANY_ID,
		.subdevice	= PCI_ANY_ID,
		.setup		= pci_default_setup,
	}
};

static inline int quirk_id_matches(u32 quirk_id, u32 dev_id)
{
	return quirk_id == PCI_ANY_ID || quirk_id == dev_id;
}

static struct pci_serial_quirk *find_quirk(struct pci_dev *dev)
{
	struct pci_serial_quirk *quirk;

	for (quirk = pci_serial_quirks; ; quirk++)
		if (quirk_id_matches(quirk->vendor, dev->vendor) &&
		    quirk_id_matches(quirk->device, dev->device) &&
		    quirk_id_matches(quirk->subvendor, dev->subsystem_vendor) &&
		    quirk_id_matches(quirk->subdevice, dev->subsystem_device))
		 	break;
	return quirk;
}

static _INLINE_ int
get_pci_irq(struct pci_dev *dev, struct pci_board *board, int idx)
{
	if (board->flags & FL_NOIRQ)
		return 0;
	else
		return dev->irq;
}

/*
 * This is the configuration table for all of the PCI serial boards
 * which we support.  It is directly indexed by the pci_board_num_t enum
 * value, which is encoded in the pci_device_id PCI probe table's
 * driver_data member.
 *
 * The makeup of these names are:
 *  pbn_bn{_bt}_n_baud
 *
 *  bn   = PCI BAR number
 *  bt   = Index using PCI BARs
 *  n    = number of serial ports
 *  baud = baud rate
 *
 * Please note: in theory if n = 1, _bt infix should make no difference.
 * ie, pbn_b0_1_115200 is the same as pbn_b0_bt_1_115200
 */
enum pci_board_num_t {
	pbn_default = 0,

	pbn_b0_1_115200,
	pbn_b0_2_115200,
	pbn_b0_4_115200,
	pbn_b0_5_115200,

	pbn_b0_1_921600,
	pbn_b0_2_921600,
	pbn_b0_4_921600,

	pbn_b0_bt_1_115200,
	pbn_b0_bt_2_115200,
	pbn_b0_bt_8_115200,

	pbn_b0_bt_1_460800,
	pbn_b0_bt_2_460800,
	pbn_b0_bt_4_460800,

	pbn_b0_bt_1_921600,
	pbn_b0_bt_2_921600,
	pbn_b0_bt_4_921600,
	pbn_b0_bt_8_921600,

	pbn_b1_1_115200,
	pbn_b1_2_115200,
	pbn_b1_4_115200,
	pbn_b1_8_115200,

	pbn_b1_1_921600,
	pbn_b1_2_921600,
	pbn_b1_4_921600,
	pbn_b1_8_921600,

	pbn_b1_bt_2_921600,

	pbn_b1_2_1382400,
	pbn_b1_4_1382400,
	pbn_b1_8_1382400,

	pbn_b2_1_115200,
	pbn_b2_8_115200,

	pbn_b2_1_460800,
	pbn_b2_4_460800,
	pbn_b2_8_460800,
	pbn_b2_16_460800,

	pbn_b2_1_921600,
	pbn_b2_4_921600,
	pbn_b2_8_921600,

	pbn_b2_bt_1_115200,
	pbn_b2_bt_2_115200,
	pbn_b2_bt_4_115200,

	pbn_b2_bt_2_921600,
	pbn_b2_bt_4_921600,

	pbn_b3_4_115200,
	pbn_b3_8_115200,

	/*
	 * Board-specific versions.
	 */
	pbn_panacom,
	pbn_panacom2,
	pbn_panacom4,
	pbn_plx_romulus,
	pbn_oxsemi,
	pbn_intel_i960,
	pbn_sgi_ioc3,
	pbn_nec_nile4,
	pbn_computone_4,
	pbn_computone_6,
	pbn_computone_8,
	pbn_sbsxrsio,
	pbn_exar_XR17C152,
	pbn_exar_XR17C154,
	pbn_exar_XR17C158,
};

/*
 * uart_offset - the space between channels
 * reg_shift   - describes how the UART registers are mapped
 *               to PCI memory by the card.
 * For example IER register on SBS, Inc. PMC-OctPro is located at
 * offset 0x10 from the UART base, while UART_IER is defined as 1
 * in include/linux/serial_reg.h,
 * see first lines of serial_in() and serial_out() in 8250.c
*/

static struct pci_board pci_boards[] __devinitdata = {
	[pbn_default] = {
		.flags		= FL_BASE0,
		.num_ports	= 1,
		.base_baud	= 115200,
		.uart_offset	= 8,
	},
	[pbn_b0_1_115200] = {
		.flags		= FL_BASE0,
		.num_ports	= 1,
		.base_baud	= 115200,
		.uart_offset	= 8,
	},
	[pbn_b0_2_115200] = {
		.flags		= FL_BASE0,
		.num_ports	= 2,
		.base_baud	= 115200,
		.uart_offset	= 8,
	},
	[pbn_b0_4_115200] = {
		.flags		= FL_BASE0,
		.num_ports	= 4,
		.base_baud	= 115200,
		.uart_offset	= 8,
	},
	[pbn_b0_5_115200] = {
		.flags		= FL_BASE0,
		.num_ports	= 5,
		.base_baud	= 115200,
		.uart_offset	= 8,
	},

	[pbn_b0_1_921600] = {