diff options
Diffstat (limited to 'arch/sparc64/kernel/prom.c')
| -rw-r--r-- | arch/sparc64/kernel/prom.c | 63 |
1 files changed, 56 insertions, 7 deletions
diff --git a/arch/sparc64/kernel/prom.c b/arch/sparc64/kernel/prom.c index 99daeee4209..5cc5ab63293 100644 --- a/arch/sparc64/kernel/prom.c +++ b/arch/sparc64/kernel/prom.c @@ -344,10 +344,12 @@ static unsigned long __psycho_onboard_imap_off[] = { /*0x2f*/ PSYCHO_IMAP_CE, /*0x30*/ PSYCHO_IMAP_A_ERR, /*0x31*/ PSYCHO_IMAP_B_ERR, -/*0x32*/ PSYCHO_IMAP_PMGMT +/*0x32*/ PSYCHO_IMAP_PMGMT, +/*0x33*/ PSYCHO_IMAP_GFX, +/*0x34*/ PSYCHO_IMAP_EUPA, }; #define PSYCHO_ONBOARD_IRQ_BASE 0x20 -#define PSYCHO_ONBOARD_IRQ_LAST 0x32 +#define PSYCHO_ONBOARD_IRQ_LAST 0x34 #define psycho_onboard_imap_offset(__ino) \ __psycho_onboard_imap_off[(__ino) - PSYCHO_ONBOARD_IRQ_BASE] @@ -529,6 +531,10 @@ static unsigned long __sabre_onboard_imap_off[] = { /*0x2e*/ SABRE_IMAP_UE, /*0x2f*/ SABRE_IMAP_CE, /*0x30*/ SABRE_IMAP_PCIERR, +/*0x31*/ 0 /* reserved */, +/*0x32*/ 0 /* reserved */, +/*0x33*/ SABRE_IMAP_GFX, +/*0x34*/ SABRE_IMAP_EUPA, }; #define SABRE_ONBOARD_IRQ_BASE 0x20 #define SABRE_ONBOARD_IRQ_LAST 0x30 @@ -539,6 +545,45 @@ static unsigned long __sabre_onboard_imap_off[] = { ((ino & 0x20) ? (SABRE_ICLR_SCSI + (((ino) & 0x1f) << 3)) : \ (SABRE_ICLR_A_SLOT0 + (((ino) & 0x1f)<<3))) +static int sabre_device_needs_wsync(struct device_node *dp) +{ + struct device_node *parent = dp->parent; + char *parent_model, *parent_compat; + + /* This traversal up towards the root is meant to + * handle two cases: + * + * 1) non-PCI bus sitting under PCI, such as 'ebus' + * 2) the PCI controller interrupts themselves, which + * will use the sabre_irq_build but do not need + * the DMA synchronization handling + */ + while (parent) { + if (!strcmp(parent->type, "pci")) + break; + parent = parent->parent; + } + + if (!parent) + return 0; + + parent_model = of_get_property(parent, + "model", NULL); + if (parent_model && + (!strcmp(parent_model, "SUNW,sabre") || + !strcmp(parent_model, "SUNW,simba"))) + return 0; + + parent_compat = of_get_property(parent, + "compatible", NULL); + if (parent_compat && + (!strcmp(parent_compat, "pci108e,a000") || + !strcmp(parent_compat, "pci108e,a001"))) + return 0; + + return 1; +} + static unsigned int sabre_irq_build(struct device_node *dp, unsigned int ino, void *_data) @@ -577,15 +622,17 @@ static unsigned int sabre_irq_build(struct device_node *dp, virt_irq = build_irq(inofixup, iclr, imap); + /* If the parent device is a PCI<->PCI bridge other than + * APB, we have to install a pre-handler to ensure that + * all pending DMA is drained before the interrupt handler + * is run. + */ regs = of_get_property(dp, "reg", NULL); - if (regs && - ((regs->phys_hi >> 16) & 0xff) != irq_data->pci_first_busno) { + if (regs && sabre_device_needs_wsync(dp)) { irq_install_pre_handler(virt_irq, sabre_wsync_handler, (void *) (long) regs->phys_hi, - (void *) - controller_regs + - SABRE_WRSYNC); + (void *) irq_data); } return virt_irq; @@ -854,6 +901,8 @@ static unsigned long sysio_irq_offsets[] = { SYSIO_IMAP_CE, SYSIO_IMAP_SBERR, SYSIO_IMAP_PMGMT, + SYSIO_IMAP_GFX, + SYSIO_IMAP_EUPA, }; #undef bogon |