Re: Syba 8-Port Serial Card Unidentified By Kernel

[Bjorn Helgaas <bjorn.helgaas@hp.com>]

Here's a 2.6.27-rc3 patch that works for me.

I only have one card, so I can't test this with multiple cards.
I don't know whether there's any way the INTC_GPIO base addresses
would get programmed to non-conflicting values.  My card comes
up with the INTC_GPIO area at I/O ports 0x0300-0x031f, but that
might be a default that's just hardwired into the card.

It looks like we could allocate this region when we claim the
device, which should let us support multiple cards, but I haven't
tried this.

If anybody tries this out, let me know how it works.

Bjorn


diff --git a/drivers/serial/8250_pci.c b/drivers/serial/8250_pci.c
index c2f2393..d442ddb 100644
--- a/drivers/serial/8250_pci.c
+++ b/drivers/serial/8250_pci.c
@@ -737,6 +737,55 @@ static void __devexit pci_ite887x_exit(struct pci_dev *dev)
 	release_region(ioport, ITE_887x_IOSIZE);
 }
 
+#define ITE_887x_IRR0  0
+#define ITE_887x_IRR1  1
+#define ITE_887x_IRR2  2
+#define ITE_887x_IMR0  4
+#define ITE_887x_IMR1  5
+#define ITE_887x_IMR2  6
+#define ITE_887x_IER0  8
+#define ITE_887x_IER1  9
+#define ITE_887x_IER2  10
+#define ITE_887x_ITR0  12
+#define ITE_887x_ITR1  13
+#define ITE_887x_ITR2  14
+
+static int pci_syba_ite887x_init(struct pci_dev *dev)
+{
+	u32 ddma_intc_base, intc_base;
+	struct resource *iobase;
+
+	pci_read_config_dword(dev, ITE_887x_INTCBAR, &ddma_intc_base);
+	intc_base = ddma_intc_base & 0xffff;
+
+	iobase = request_region(intc_base, ITE_887x_IOSIZE, "ite887x");
+	if (!iobase) {
+		dev_err(&dev->dev, "can't request INTC_Base at 0x%x\n",
+			intc_base);
+		return -ENODEV;
+	}
+
+	outb(0x00, intc_base + ITE_887x_IMR0);	/* mask external IRQ 0-7 */
+	outb(0xff, intc_base + ITE_887x_IMR1);	/* mask external IRQ 8-15 */
+	outb(0xff, intc_base + ITE_887x_IMR2);	/* mask internal interrupts */
+
+	outb(0xff, intc_base + ITE_887x_IER0);	/* IRQ 0-7 level-triggered */
+	outb(0x00, intc_base + ITE_887x_IER1);	/* IRQ 8-15 edge (unused) */
+	outb(0x00, intc_base + ITE_887x_IER2);	/* internal edge (unused) */
+
+	outb(0x00, intc_base + ITE_887x_ITR0);	/* clear SW-generated ints */
+	outb(0x00, intc_base + ITE_887x_ITR1);
+	outb(0x00, intc_base + ITE_887x_ITR2);
+
+	outb(0x00, intc_base + ITE_887x_IRR0);	/* clear any pending ints */
+	outb(0x00, intc_base + ITE_887x_IRR1);
+	outb(0x00, intc_base + ITE_887x_IRR2);
+
+	outb(0x00, intc_base + ITE_887x_IMR0);	/* unmask external IRQ 0-7 */
+
+	return 8;
+}
+
 static int
 pci_default_setup(struct serial_private *priv, struct pciserial_board *board,
 		  struct uart_port *port, int idx)
@@ -835,6 +884,18 @@ static struct pci_serial_quirk pci_serial_quirks[] __refdata = {
 		.exit		= __devexit_p(pci_ite887x_exit),
 	},
 	/*
+	 * Syba
+	 */
+	{
+		.vendor		= PCI_VENDOR_ID_PLX,
+		.device		= 0x9016,
+		.subvendor	= 0x544e,
+		.subdevice	= 0x0008,
+		.init		= pci_syba_ite887x_init,
+		.setup		= pci_default_setup,
+	/*	.exit		= __devexit_p(pci_ite887x_exit), */
+	},
+	/*
 	 * Panacom
 	 */
 	{
@@ -1085,6 +1146,8 @@ enum pci_board_num_t {
 	pbn_b0_5_115200,
 	pbn_b0_8_115200,
 
+	pbn_b0_8_460800,
+
 	pbn_b0_1_921600,
 	pbn_b0_2_921600,
 	pbn_b0_4_921600,
@@ -1226,6 +1289,12 @@ static struct pciserial_board pci_boards[] __devinitdata = {
 		.base_baud	= 115200,
 		.uart_offset	= 8,
 	},
+	[pbn_b0_8_460800] = {
+		.flags		= FL_BASE0,
+		.num_ports	= 8,
+		.base_baud	= 460800,
+		.uart_offset	= 8,
+	},
 	[pbn_b0_1_921600] = {
 		.flags		= FL_BASE0,
 		.num_ports	= 1,
@@ -2581,6 +2650,11 @@ static struct pci_device_id serial_pci_tbl[] = {
 		PCI_ANY_ID, PCI_ANY_ID, 0, 0,
 		pbn_b3_8_115200 },
 
+	/* Syba PCI8871-PR8 8-port serial card */
+	{	PCI_VENDOR_ID_PLX, 0x9016,
+		0x544e, 0x0008, 0, 0,
+		pbn_b0_8_460800 },
+
 	/*
 	 * Exar Corp. XR17C15[248] Dual/Quad/Octal UART
 	 */