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* [SPARC64]: More TLB/TSB handling fixes.David S. Miller2006-03-207-51/+64
| | | | | | | | | | | | | | | The SUN4V convention with non-shared TSBs is that the context bit of the TAG is clear. So we have to choose an "invalid" bit and initialize new TSBs appropriately. Otherwise a zero TAG looks "valid". Make sure, for the window fixup cases, that we use the right global registers and that we don't potentially trample on the live global registers in etrap/rtrap handling (%g2 and %g6) and that we put the missing virtual address properly in %g5. Signed-off-by: David S. Miller <davem@davemloft.net>
* [SPARC64]: Don't do anything in flush_ptrace_access() on SUN4V.David S. Miller2006-03-201-0/+3
| | | | Signed-off-by: David S. Miller <davem@davemloft.net>
* [SPARC64]: Fix some SUN4V TLB handling bugs.David S. Miller2006-03-203-5/+92
| | | | | | | | | | | | | 1) Add error return checking for TLB load hypervisor calls. 2) Don't fallthru to dtlb tsb miss handler from itlb tsb miss handler, oops. 3) On window fixups, propagate fault information to fixup handler correctly. Signed-off-by: David S. Miller <davem@davemloft.net>
* [SPARC64]: Check for errors in hypervisor_tlb_lock().David S. Miller2006-03-201-0/+5
| | | | Signed-off-by: David S. Miller <davem@davemloft.net>
* [SPARC64]: Init boot cpu's trap_block[] before paging_init()David S. Miller2006-03-201-2/+2
| | | | | | It must be ready when we take over the trap table. Signed-off-by: David S. Miller <davem@davemloft.net>
* [SPARC64]: Define ARCH_HAS_READ_CURRENT_TIMER.David S. Miller2006-03-202-18/+9Star
| | | | | | | This gives more consistent bogomips and delay() semantics, especially on sun4v. It gives weird looking values though... Signed-off-by: David S. Miller <davem@davemloft.net>
* [SPARC64]: Set associativity of kernel TSB descriptor correctly.David S. Miller2006-03-201-1/+1
| | | | | | It should be 1, not 0. Signed-off-by: David S. Miller <davem@davemloft.net>
* [SPARC64]: __bzero_noasi --> __clear_userDavid S. Miller2006-03-202-10/+10
| | | | Signed-off-by: David S. Miller <davem@davemloft.net>
* [SPARC64]: Put SUN4V ITSB miss into correct trap table entry.David S. Miller2006-03-201-6/+4Star
| | | | | | It's 0x9 not 0xb. Signed-off-by: David S. Miller <davem@davemloft.net>
* [SPARC64]: Use phys tsb address in tsb_insert() in SUN4V.David S. Miller2006-03-201-1/+1
| | | | Signed-off-by: David S. Miller <davem@davemloft.net>
* [SPARC64]: Fix uniprocessor IRQ targetting on SUN4V.David S. Miller2006-03-203-55/+53Star
| | | | | | | | | | | We need to use the real hardware processor ID when targetting interrupts, not the "define to 0" thing the uniprocessor build gives us. Also, fill in the Node-ID and Agent-ID fields properly on sun4u/Safari. Signed-off-by: David S. Miller <davem@davemloft.net>
* [SPARC64]: Fix PCI IRQ probing regression.David S. Miller2006-03-201-5/+5
| | | | | | | | If the top-level cnode had multi entries in it's "reg" property, we'd fail. The buffer wasn't large enough in such cases. Signed-off-by: David S. Miller <davem@davemloft.net>
* [SPARC64]: Get SUN4V SMP working.David S. Miller2006-03-205-50/+84
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The sibling cpu bringup is extremely fragile. We can only perform the most basic calls until we take over the trap table from the firmware/hypervisor on the new cpu. This means no accesses to %g4, %g5, %g6 since those can't be TLB translated without our trap handlers. In order to achieve this: 1) Change sun4v_init_mondo_queues() so that it can operate in several modes. It can allocate the queues, or install them in the current processor, or both. The boot cpu does both in it's call early on. Later, the boot cpu allocates the sibling cpu queue, starts the sibling cpu, then the sibling cpu loads them in. 2) init_cur_cpu_trap() is changed to take the current_thread_info() as an argument instead of reading %g6 directly on the current cpu. 3) Create a trampoline stack for the sibling cpus. We do our basic kernel calls using this stack, which is locked into the kernel image, then go to our proper thread stack after taking over the trap table. 4) While we are in this delicate startup state, we put 0xdeadbeef into %g4/%g5/%g6 in order to catch accidental accesses. 5) On the final prom_set_trap_table*() call, we put &init_thread_union into %g6. This is a hack to make prom_world(0) work. All that wants to do is restore the %asi register using get_thread_current_ds(). Longer term we should just do the OBP calls to set the trap table by hand just like we do for everything else. This would avoid that silly prom_world(0) issue, then we can remove the init_thread_union hack. Signed-off-by: David S. Miller <davem@davemloft.net>
* [SPARC64]: Disable smp_report_regs() for now.David S. Miller2006-03-201-0/+2
| | | | | | | For 32 cpus and a slow console, it just wedges the machine especially with DETECT_SOFTLOCKUP enabled. Signed-off-by: David S. Miller <davem@davemloft.net>
* [SPARC64]: Rewrite pci_intmap_match().David S. Miller2006-03-201-114/+155
| | | | | | | | | | | | | | | | | | | | The whole algorithm was wrong. What we need to do is: 1) Walk each PCI bus above this device on the path to the PCI controller nexus, and for each: a) If interrupt-map exists, apply it, record IRQ controller node b) Else, swivel interrupt number using PCI_SLOT(), use PCI bus parent OBP node as controller node c) Walk up to "controller node" until we hit the first PCI bus in this domain, or "controller node" is the PCI controller OBP node 2) If we walked to PCI controller OBP node, we're done. 3) Else, apply PCI controller interrupt-map to interrupt. There is some stuff that needs to be checked out for ebus and isa, but the PCI part is good to go. Signed-off-by: David S. Miller <davem@davemloft.net>
* [SPARC64]: Don't set interrupt state to IDLE in enable_irq().David S. Miller2006-03-201-4/+0Star
| | | | | | We'll lose events that way. Signed-off-by: David S. Miller <davem@davemloft.net>
* [SPARC64]: Fix return from trap on SUN4V.David S. Miller2006-03-201-1/+3
| | | | | | | | | | | | We need to set the global register set _AND_ disable PSTATE_IE in %pstate. The original patch sequence was leaving PSTATE_IE enabled when returning to kernel mode, oops. This fixes the random register corruption being seen on SUN4V. Signed-off-by: David S. Miller <davem@davemloft.net>
* [SPARC64]: Set dummy bucket->{imap,iclr} unique on SUN4V.David S. Miller2006-03-201-5/+10
| | | | | | So that free_irq() disable's the IRQ correctly. Signed-off-by: David S. Miller <davem@davemloft.net>
* [SPARC64]: Add sun4v_cpu_qconf() hypervisor call.David S. Miller2006-03-202-19/+19
| | | | | | Call it from register_one_mondo(). Signed-off-by: David S. Miller <davem@davemloft.net>
* [SPARC64]: do_fptrap needs to load the thread reg into %g6.David S. Miller2006-03-201-0/+1
| | | | Signed-off-by: David S. Miller <davem@davemloft.net>
* [SPARC64]: Fix bogus call to sun4v_mna in winfixup code.David S. Miller2006-03-201-1/+1
| | | | | | The C function is named sun4v_do_mna not sun4v_mna. Signed-off-by: David S. Miller <davem@davemloft.net>
* [SPARC64]: Fix tl1 trap state capture/dump on SUN4V.David S. Miller2006-03-202-1/+9
| | | | | | No trap levels above 2 in privileged mode on SUN4V. Signed-off-by: David S. Miller <davem@davemloft.net>
* [SPARC64] PCI: Size TSB correctly on SUN4V.David S. Miller2006-03-201-6/+16
| | | | | | | | | Forgot to multiply by 8 * 1024, oops. Correct the size constant when the virtual-dma arena is 2GB in size, it should bet 256 not 128. Finally, log some info about the TSB at probe time. Signed-off-by: David S. Miller <davem@davemloft.net>
* [SPARC64]: Don't use ASI_QUAD_LDD_PHYS on SUN4V.David S. Miller2006-03-201-2/+2
| | | | | | Need to use ASI_QUAD_LDD_PHYS_4V instead. Signed-off-by: David S. Miller <davem@davemloft.net>
* [SPARC64]: Do not write garbage into %pstate in tsb_context_switch().David S. Miller2006-03-201-1/+7
| | | | | | | | For SUN4V, we were clobbering %o5 to do the hypervisor call. This clobbers the saved %pstate value and we end up writing garbage into that register as a result. Oops. Signed-off-by: David S. Miller <davem@davemloft.net>
* [SPARC64]: Fix flush_tsb_user() on SUN4V.David S. Miller2006-03-201-1/+1
| | | | | | Needs to use physical addressing just like cheetah_plus. Signed-off-by: David S. Miller <davem@davemloft.net>
* [SPARC64]: Fix comment typo in __flush_tlb_kernel_range.David S. Miller2006-03-201-1/+1
| | | | Signed-off-by: David S. Miller <davem@davemloft.net>
* [SPARC64]: Decode virtual-devices interrupts correctly.David S. Miller2006-03-201-12/+86
| | | | | | Need to translate through the interrupt-map{,-mask] properties. Signed-off-by: David S. Miller <davem@davemloft.net>
* [SPARC64]: Add prom_{start,stop}cpu_cpuid().David S. Miller2006-03-202-5/+23
| | | | | | | | | Use prom_startcpu_cpuid() on SUN4V instead of prom_startcpu(). We should really test for "SUNW,start-cpu-by-cpuid" presence and use it if present even on SUN4U. Signed-off-by: David S. Miller <davem@davemloft.net>
* [SPARC64]: Fix pci_intmap_match().David S. Miller2006-03-201-3/+10
| | | | | | | | | | When crawling up the PCI bus chain, stop at the first node that has an interrupt-map property before we hit the root. Also, if we use a bus interrupt-{map,mask} do not forget to update the 'intmask' pointer as we do for the 'intmap' pointer. Signed-off-by: David S. Miller <davem@davemloft.net>
* [SPARC64]: Two IRQ handling fixes.David S. Miller2006-03-201-3/+8
| | | | | | | | | On SUN4V, force IRQ state to idle in enable_irq(). However, I'm still not sure this is %100 correct. Call add_interrupt_randomness() on SUN4V too. Signed-off-by: David S. Miller <davem@davemloft.net>
* [SPARC64]: Use different cache sizing defaults on SUN4V.David S. Miller2006-03-202-14/+48
| | | | Signed-off-by: David S. Miller <davem@davemloft.net>
* [SPARC64]: Make lack of interrupt-map-* a fatal error on SUN4V.David S. Miller2006-03-201-13/+14
| | | | Signed-off-by: David S. Miller <davem@davemloft.net>
* [SPARC64]: Fix sun4v_intr_setenabled() return value check in enable_irq().David S. Miller2006-03-201-1/+1
| | | | Signed-off-by: David S. Miller <davem@davemloft.net>
* [SPARC64]: Explicitly init *nregs to 0 in find_device_prom_node().David S. Miller2006-03-201-3/+3
| | | | Signed-off-by: David S. Miller <davem@davemloft.net>
* [SPARC64]: Restrict PCI bus scanning on SUN4V.David S. Miller2006-03-201-20/+16Star
| | | | | | | | | | | | | On the PBM's first bus number, only allow device 0, function 0, to be poked at with PCI config space accesses. For some reason, this single device responds to all device numbers. Also, reduce the verbiage of the debugging log printk's for PCI cfg space accesses in the SUN4V PCI controller driver, so that it doesn't overwhelm the slow SUN4V hypervisor console. Signed-off-by: David S. Miller <davem@davemloft.net>
* [SPARC64]: Fix C-function name called by sun4v_mna trap code.David S. Miller2006-03-202-2/+2
| | | | | | The trap code was calling itself :-) Signed-off-by: David S. Miller <davem@davemloft.net>
* [SPARC64]: Don't printk() any messaages in sun4v_build_irq().David S. Miller2006-03-201-3/+0Star
| | | | | | It just clutters up the log. Signed-off-by: David S. Miller <davem@davemloft.net>
* [SPARC64]: INO is never fully specified already on SUN4V.David S. Miller2006-03-201-9/+11
| | | | Signed-off-by: David S. Miller <davem@davemloft.net>
* [SPARC64]: Kill sun4v_register_fault_status() on SMP.David S. Miller2006-03-201-3/+1Star
| | | | | | | That now gets done as a side effect of taking over the trap table from OBP. Signed-off-by: David S. Miller <davem@davemloft.net>
* [SPARC64]: arch/sparc64/kernel/trampoline.S needs asm/cpudata.hDavid S. Miller2006-03-201-0/+1
| | | | Signed-off-by: David S. Miller <davem@davemloft.net>
* [SPARC64]: Make error codes available from sun4v_intr_get*().David S. Miller2006-03-201-3/+18
| | | | | | And check for errors at call sites. Signed-off-by: David S. Miller <davem@davemloft.net>
* [SPARC64]: Pass correct ino to sun4v_intr_*().David S. Miller2006-03-201-8/+11
| | | | Signed-off-by: David S. Miller <davem@davemloft.net>
* [SPARC64]: Use TRAP_LOAD_IRQ_WORK() in sun4v device mondo handler.David S. Miller2006-03-201-4/+1Star
| | | | Signed-off-by: David S. Miller <davem@davemloft.net>
* [SPARC64]: Fix IOMMU mapping on sun4v.David S. Miller2006-03-201-30/+46
| | | | | | | | | | We should dynamically allocate the per-cpu pglist not use an in-kernel-image datum, since __pa() does not work on such addresses. Also, consistently use "u32" for devhandle. Signed-off-by: David S. Miller <davem@davemloft.net>
* [SPARC64]: Trim down sun4v IRQ translation kernel log message.David S. Miller2006-03-201-2/+2
| | | | Signed-off-by: David S. Miller <davem@davemloft.net>
* [SPARC64] sunhv: Bug fixes.David S. Miller2006-03-201-0/+1
| | | | | | | | | | | | | | | Add udelay to polling console write loop, and increment the loop limit. Name the device "ttyHV" and pass that to add_preferred_console() when we're using hypervisor console. Kill sunhv_console_setup(), it's empty. Handle the case where we don't want to use hypervisor console. (ie. we have a head attached to a sun4v machine) Signed-off-by: David S. Miller <davem@davemloft.net>
* [SPARC64]: Probe virtual-devices root node on sun4v.David S. Miller2006-03-201-0/+58
| | | | | | | This is where we learn how to get the interrupts for things like the hypervisor console device. Signed-off-by: David S. Miller <davem@davemloft.net>
* [SPARC64]: Kill spurious semicolon in sun4v_pci_init().David S. Miller2006-03-201-1/+1
| | | | Signed-off-by: David S. Miller <davem@davemloft.net>
* [SPARC64]: Program IRQ registers correctly on sun4v.David S. Miller2006-03-201-24/+47
| | | | | | | Need to use hypervisor calls instead of direct register accesses. Signed-off-by: David S. Miller <davem@davemloft.net>
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