diff options
Diffstat (limited to 'drivers/message')
| -rw-r--r-- | drivers/message/i2o/core.h | 3 | ||||
| -rw-r--r-- | drivers/message/i2o/pci.c | 18 |
2 files changed, 21 insertions, 0 deletions
diff --git a/drivers/message/i2o/core.h b/drivers/message/i2o/core.h index 90628562851..184974cc734 100644 --- a/drivers/message/i2o/core.h +++ b/drivers/message/i2o/core.h @@ -60,4 +60,7 @@ extern void i2o_iop_remove(struct i2o_controller *); #define I2O_IN_PORT 0x40 #define I2O_OUT_PORT 0x44 +/* Motorola/Freescale specific register offset */ +#define I2O_MOTOROLA_PORT_OFFSET 0x10400 + #define I2O_IRQ_OUTBOUND_POST 0x00000008 diff --git a/drivers/message/i2o/pci.c b/drivers/message/i2o/pci.c index e2e3fc79c78..4f1515cae5d 100644 --- a/drivers/message/i2o/pci.c +++ b/drivers/message/i2o/pci.c @@ -168,6 +168,24 @@ static int __devinit i2o_pci_alloc(struct i2o_controller *c) c->in_port = c->base.virt + I2O_IN_PORT; c->out_port = c->base.virt + I2O_OUT_PORT; + /* Motorola/Freescale chip does not follow spec */ + if (pdev->vendor == PCI_VENDOR_ID_MOTOROLA && pdev->device == 0x18c0) { + /* Check if CPU is enabled */ + if (be32_to_cpu(readl(c->base.virt + 0x10000)) & 0x10000000) { + printk(KERN_INFO "%s: MPC82XX needs CPU running to " + "service I2O.\n", c->name); + i2o_pci_free(c); + return -ENODEV; + } else { + c->irq_status += I2O_MOTOROLA_PORT_OFFSET; + c->irq_mask += I2O_MOTOROLA_PORT_OFFSET; + c->in_port += I2O_MOTOROLA_PORT_OFFSET; + c->out_port += I2O_MOTOROLA_PORT_OFFSET; + printk(KERN_INFO "%s: MPC82XX workarounds activated.\n", + c->name); + } + } + if (i2o_dma_alloc(dev, &c->status, 8, GFP_KERNEL)) { i2o_pci_free(c); return -ENOMEM; |