diff options
Diffstat (limited to 'drivers/parisc')
| -rw-r--r-- | drivers/parisc/pdc_stable.c | 2 | ||||
| -rw-r--r-- | drivers/parisc/sba_iommu.c | 45 | ||||
| -rw-r--r-- | drivers/parisc/superio.c | 4 |
3 files changed, 35 insertions, 16 deletions
diff --git a/drivers/parisc/pdc_stable.c b/drivers/parisc/pdc_stable.c index 4e53be9c03ab..bbeabe3fc4c6 100644 --- a/drivers/parisc/pdc_stable.c +++ b/drivers/parisc/pdc_stable.c @@ -535,7 +535,7 @@ pdcs_auto_read(struct subsystem *entry, char *buf, int knob) { char *out = buf; struct pdcspath_entry *pathentry; - + if (!entry || !buf) return -EINVAL; diff --git a/drivers/parisc/sba_iommu.c b/drivers/parisc/sba_iommu.c index 42b32ff2fca6..278f325021ee 100644 --- a/drivers/parisc/sba_iommu.c +++ b/drivers/parisc/sba_iommu.c @@ -178,6 +178,11 @@ extern struct proc_dir_entry * proc_mckinley_root; #define ROPE6_CTL 0x230 #define ROPE7_CTL 0x238 +#define IOC_ROPE0_CFG 0x500 /* pluto only */ +#define IOC_ROPE_AO 0x10 /* Allow "Relaxed Ordering" */ + + + #define HF_ENABLE 0x40 @@ -1759,19 +1764,33 @@ printk("sba_hw_init(): mem_boot 0x%x 0x%x 0x%x 0x%x\n", PAGE0->mem_boot.hpa, sba_dev->num_ioc = num_ioc; for (i = 0; i < num_ioc; i++) { - /* - ** Make sure the box crashes if we get any errors on a rope. - */ - WRITE_REG(HF_ENABLE, sba_dev->ioc[i].ioc_hpa + ROPE0_CTL); - WRITE_REG(HF_ENABLE, sba_dev->ioc[i].ioc_hpa + ROPE1_CTL); - WRITE_REG(HF_ENABLE, sba_dev->ioc[i].ioc_hpa + ROPE2_CTL); - WRITE_REG(HF_ENABLE, sba_dev->ioc[i].ioc_hpa + ROPE3_CTL); - WRITE_REG(HF_ENABLE, sba_dev->ioc[i].ioc_hpa + ROPE4_CTL); - WRITE_REG(HF_ENABLE, sba_dev->ioc[i].ioc_hpa + ROPE5_CTL); - WRITE_REG(HF_ENABLE, sba_dev->ioc[i].ioc_hpa + ROPE6_CTL); - WRITE_REG(HF_ENABLE, sba_dev->ioc[i].ioc_hpa + ROPE7_CTL); - - /* flush out the writes */ + unsigned long ioc_hpa = sba_dev->ioc[i].ioc_hpa; + unsigned int j; + + for (j=0; j < sizeof(u64) * ROPES_PER_IOC; j+=sizeof(u64)) { + + /* + * Clear ROPE(N)_CONFIG AO bit. + * Disables "NT Ordering" (~= !"Relaxed Ordering") + * Overrides bit 1 in DMA Hint Sets. + * Improves netperf UDP_STREAM by ~10% for bcm5701. + */ + if (IS_PLUTO(sba_dev->iodc)) { + unsigned long rope_cfg, cfg_val; + + rope_cfg = ioc_hpa + IOC_ROPE0_CFG + j; + cfg_val = READ_REG(rope_cfg); + cfg_val &= ~IOC_ROPE_AO; + WRITE_REG(cfg_val, rope_cfg); + } + + /* + ** Make sure the box crashes on rope errors. + */ + WRITE_REG(HF_ENABLE, ioc_hpa + ROPE0_CTL + j); + } + + /* flush out the last writes */ READ_REG(sba_dev->ioc[i].ioc_hpa + ROPE7_CTL); DBG_INIT(" ioc[%d] ROPE_CFG 0x%Lx ROPE_DBG 0x%Lx\n", diff --git a/drivers/parisc/superio.c b/drivers/parisc/superio.c index 719b863bc20e..828eb45062de 100644 --- a/drivers/parisc/superio.c +++ b/drivers/parisc/superio.c @@ -155,7 +155,7 @@ superio_init(struct pci_dev *pcidev) struct pci_dev *pdev = sio->lio_pdev; u16 word; - if (sio->suckyio_irq_enabled) + if (sio->suckyio_irq_enabled) return; BUG_ON(!pdev); @@ -194,7 +194,7 @@ superio_init(struct pci_dev *pcidev) request_region (sio->acpi_base, 0x1f, "acpi"); /* Enable the legacy I/O function */ - pci_read_config_word (pdev, PCI_COMMAND, &word); + pci_read_config_word (pdev, PCI_COMMAND, &word); word |= PCI_COMMAND_SERR | PCI_COMMAND_PARITY | PCI_COMMAND_IO; pci_write_config_word (pdev, PCI_COMMAND, word); |