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Message-Id: <200809101326.38400.bjorn.helgaas@hp.com>
Date: Wed, 10 Sep 2008 13:26:37 -0600
From: Bjorn Helgaas <bjorn.helgaas@...com>
To: Andrey Panin <pazke@...pac.ru>
Cc: Chris Bergeron <chris@...urn.com>, linux-kernel@...r.kernel.org,
kyle@...chgear.com, Ted.Wen@....com.tw, Michael@...syba.com
Subject: Re: Syba 8-Port Serial Card Unidentified By Kernel
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
*/
--
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