#ifdef CONFIG_SERIAL_8250
#include <linux/serial_core.h>
#include <linux/serial_8250.h>
+#include <linux/serial_reg.h>
#endif
#include <linux/netdevice.h>
static int nic_init(struct ioc3 *ioc3)
{
- const char *type;
+ const char *unknown = "unknown";
+ const char *type = unknown;
u8 crc;
u8 serial[6];
int save = 0, i;
- type = "unknown";
-
while (1) {
u64 reg;
reg = nic_find(ioc3, &save);
}
printk("Found %s NIC", type);
- if (type != "unknown") {
+ if (type != unknown) {
printk (" registration number %02x:%02x:%02x:%02x:%02x:%02x,"
" CRC %02x", serial[0], serial[1], serial[2],
serial[3], serial[4], serial[5], crc);
* MiniDINs; all other subdevices are left swinging in the wind, leave
* them disabled.
*/
-static inline int ioc3_is_menet(struct pci_dev *pdev)
+
+static int ioc3_adjacent_is_ioc3(struct pci_dev *pdev, int slot)
{
- struct pci_dev *dev;
-
- return pdev->bus->parent == NULL
- && (dev = pci_find_slot(pdev->bus->number, PCI_DEVFN(0, 0)))
- && dev->vendor == PCI_VENDOR_ID_SGI
- && dev->device == PCI_DEVICE_ID_SGI_IOC3
- && (dev = pci_find_slot(pdev->bus->number, PCI_DEVFN(1, 0)))
- && dev->vendor == PCI_VENDOR_ID_SGI
- && dev->device == PCI_DEVICE_ID_SGI_IOC3
- && (dev = pci_find_slot(pdev->bus->number, PCI_DEVFN(2, 0)))
- && dev->vendor == PCI_VENDOR_ID_SGI
- && dev->device == PCI_DEVICE_ID_SGI_IOC3;
+ struct pci_dev *dev = pci_get_slot(pdev->bus, PCI_DEVFN(slot, 0));
+ int ret = 0;
+
+ if (dev) {
+ if (dev->vendor == PCI_VENDOR_ID_SGI &&
+ dev->device == PCI_DEVICE_ID_SGI_IOC3)
+ ret = 1;
+ pci_dev_put(dev);
+ }
+
+ return ret;
+}
+
+static int ioc3_is_menet(struct pci_dev *pdev)
+{
+ return pdev->bus->parent == NULL &&
+ ioc3_adjacent_is_ioc3(pdev, 0) &&
+ ioc3_adjacent_is_ioc3(pdev, 1) &&
+ ioc3_adjacent_is_ioc3(pdev, 2);
}
#ifdef CONFIG_SERIAL_8250
* Also look in ip27-pci.c:pci_fixup_ioc3() for some comments on working
* around ioc3 oddities in this respect.
*
- * The IOC3 serials use a 22MHz clock rate with an additional divider by 3.
+ * The IOC3 serials use a 22MHz clock rate with an additional divider which
+ * can be programmed in the SCR register if the DLAB bit is set.
+ *
+ * Register to interrupt zero because we share the interrupt with
+ * the serial driver which we don't properly support yet.
+ *
+ * Can't use UPF_IOREMAP as the whole of IOC3 resources have already been
+ * registered.
*/
+static void __devinit ioc3_8250_register(struct ioc3_uartregs __iomem *uart)
+{
+#define COSMISC_CONSTANT 6
+
+ struct uart_port port = {
+ .irq = 0,
+ .flags = UPF_SKIP_TEST | UPF_BOOT_AUTOCONF,
+ .iotype = UPIO_MEM,
+ .regshift = 0,
+ .uartclk = (22000000 << 1) / COSMISC_CONSTANT,
+
+ .membase = (unsigned char __iomem *) uart,
+ .mapbase = (unsigned long) uart,
+ };
+ unsigned char lcr;
+
+ lcr = uart->iu_lcr;
+ uart->iu_lcr = lcr | UART_LCR_DLAB;
+ uart->iu_scr = COSMISC_CONSTANT,
+ uart->iu_lcr = lcr;
+ uart->iu_lcr;
+ serial8250_register_port(&port);
+}
static void __devinit ioc3_serial_probe(struct pci_dev *pdev, struct ioc3 *ioc3)
{
- struct uart_port port;
-
/*
* We need to recognice and treat the fourth MENET serial as it
* does not have an SuperIO chip attached to it, therefore attempting
return;
/*
- * Register to interrupt zero because we share the interrupt with
- * the serial driver which we don't properly support yet.
- *
- * Can't use UPF_IOREMAP as the whole of IOC3 resources have already
- * been registered.
+ * Switch IOC3 to PIO mode. It probably already was but let's be
+ * paranoid
*/
- memset(&port, 0, sizeof(port));
- port.irq = 0;
- port.flags = UPF_SKIP_TEST | UPF_BOOT_AUTOCONF;
- port.iotype = UPIO_MEM;
- port.regshift = 0;
- port.uartclk = 22000000 / 3;
-
- port.membase = (unsigned char *) &ioc3->sregs.uarta;
- serial8250_register_port(&port);
-
- port.membase = (unsigned char *) &ioc3->sregs.uartb;
- serial8250_register_port(&port);
+ ioc3->gpcr_s = GPCR_UARTA_MODESEL | GPCR_UARTB_MODESEL;
+ ioc3->gpcr_s;
+ ioc3->gppr_6 = 0;
+ ioc3->gppr_6;
+ ioc3->gppr_7 = 0;
+ ioc3->gppr_7;
+ ioc3->sscr_a = ioc3->sscr_a & ~SSCR_DMA_EN;
+ ioc3->sscr_a;
+ ioc3->sscr_b = ioc3->sscr_b & ~SSCR_DMA_EN;
+ ioc3->sscr_b;
+ /* Disable all SA/B interrupts except for SA/B_INT in SIO_IEC. */
+ ioc3->sio_iec &= ~ (SIO_IR_SA_TX_MT | SIO_IR_SA_RX_FULL |
+ SIO_IR_SA_RX_HIGH | SIO_IR_SA_RX_TIMER |
+ SIO_IR_SA_DELTA_DCD | SIO_IR_SA_DELTA_CTS |
+ SIO_IR_SA_TX_EXPLICIT | SIO_IR_SA_MEMERR);
+ ioc3->sio_iec |= SIO_IR_SA_INT;
+ ioc3->sscr_a = 0;
+ ioc3->sio_iec &= ~ (SIO_IR_SB_TX_MT | SIO_IR_SB_RX_FULL |
+ SIO_IR_SB_RX_HIGH | SIO_IR_SB_RX_TIMER |
+ SIO_IR_SB_DELTA_DCD | SIO_IR_SB_DELTA_CTS |
+ SIO_IR_SB_TX_EXPLICIT | SIO_IR_SB_MEMERR);
+ ioc3->sio_iec |= SIO_IR_SB_INT;
+ ioc3->sscr_b = 0;
+
+ ioc3_8250_register(&ioc3->sregs.uarta);
+ ioc3_8250_register(&ioc3->sregs.uartb);
}
#endif
git.openpandora.org / pandora-kernel.git / blobdiff