- 09 Jan, 2006 40 commits
-
-
Aristeu Sergio Rozanski Filho authored
while using SCC as uart and as serial console at same time I got this: [ 138.214258] Oops: kernel access of bad area, sig: 11 [#1] [ 138.218832] PREEMPT [ 138.221021] NIP: C0105C48 LR: C0105E60 SP: C03D5D10 REGS: c03d5c60 TRAP: 0300 Not tainted [ 138.229280] MSR: 00009032 EE: 1 PR: 0 FP: 0 ME: 1 IR/DR: 11 [ 138.234713] DAR: 00000000, DSISR: C0000000 [ 138.238745] TASK = c0349420[693] 'sh' THREAD: c03d4000 [ 138.243754] Last syscall: 6 [ 138.246402] GPR00: FEFFFFFF C03D5D10 C0349420 C01FB094 00000011 00000000 C1ECFBBC C01F24B0 [ 138.254602] GPR08: FF002820 00000000 FF0028C0 00000000 19133615 A0CBCD5E 02000300 00000000 [ 138.262804] GPR16: 00000000 01FF9E4C 00000000 7FA9A770 00000000 00000000 1003E2A8 00000000 [ 138.271003] GPR24: 100562F4 7F9B6EF4 C0210000 C02A5338 C01FB094 00000000 C01FB094 C1F14574 [ 138.279376] NIP [c0105c48] cpm_uart_tx_pump+0x4c/0x22c [ 138.284419] LR [c0105e60] cpm_uart_start_tx+0x38/0xb0 [ 138.289361] Call trace: [ 138.291762] [c0105e60] cpm_uart_start_tx+0x38/0xb0 [ 138.296547] [c010277c] uart_send_xchar+0x88/0x118 [ 138.301244] [c01029a0] uart_unthrottle+0x6c/0x138 [ 138.305942] [c00ece10] check_unthrottle+0x60/0x64 [ 138.310641] [c00ecec4] reset_buffer_flags+0xb0/0x138 [ 138.315595] [c00ecf64] n_tty_flush_buffer+0x18/0x78 [ 138.320465] [c00e81b0] tty_ldisc_flush+0x64/0x7c [ 138.325078] [c010410c] uart_close+0xf0/0x2c8 [ 138.329348] [c00e9c48] release_dev+0x724/0x8d4 [ 138.333790] [c00e9e18] tty_release+0x20/0x3c [ 138.338061] [c006e544] __fput+0x178/0x1e0 [ 138.342076] [c006c43c] filp_close+0x54/0xac [ 138.346261] [c0002d90] ret_from_syscall+0x0/0x44 [ 138.352386] note: sh[693] exited with preempt_count 2 a easy way to reproduce it is log into the system using ssh and do: cat >/dev/ttyCPM0 then, switch to minicom and write some stuff on it back to ssh, a control C produce the oops this happens because uart_close calls uart_shutdown which frees xmit.buf, currently used by xchar sending in cpm_uart_tx_pump(), which seems wrong. the attached patch fixes the oops and also fixes xchar sending. Signed-off-by:Paul Mackerras <paulus@samba.org>
-
Haren Myneni authored
Undefined symbols (eeh_add_device_tree_early and eeh_remove_bus_device) when EEH is not enabled. This small patch will fix this. Acked-by:
Linas Vepstas <linas@austin.ibm.com> Signed-off-by:
-
Haren Myneni authored
At present, we are not looking at all interrupt controller nodes in the device tree even though the proper node was not found. This is causing the system panic. The attached patch will scan all nodes until it finds the proper interrupt controller type. Signed-off-by:
Haren Myneni <haren@us.ibm.com> Signed-off-by:
-
Kumar Gala authored
In setup_arch and setup_system call find_legacy_serial_ports() if we build in support for 8250 serial ports instead of basing it on PPC_MULTIPLATFORM. Signed-off-by:
Kumar Gala <galak@kernel.crashing.org> Signed-off-by:
-
Kumar Gala authored
Added a common udbg_progress for use by ppc_md.progress() Signed-off-by:
-
Kumar Gala authored
Add the ability to configure and initialize legacy 8250 serials ports on an SOC bus. Also, fixed an issue that we would not configure any serial ports if "linux,stdout-path" was not found. Signed-off-by:
-
Kumar Gala authored
The checking of the baudrate in udbg_probe_uart_speed was too tight and would cause reporting back of the default baud rate in cases where the computed speed was valid. Signed-off-by:
-
Mike Kravetz authored
The system will oops if an attempt is made to add memory to an empty node/zone. This patch prevents adding memory to an empty node. The code to dynamically add a node/zone is non-trivial. This patch is temporary and will be removed when the ability to dynamically add a node/zone is complete. Signed-off-by:
Mike Kravetz <kravetz@us.ibm.com> Signed-off-by:
-
Arnd Bergmann authored
Building the arch/powerpc tree currently gives me two warnings with gcc-4.0: arch/powerpc/mm/imalloc.c: In function '__im_get_area': arch/powerpc/mm/imalloc.c:225: warning: 'tmp' may be used uninitialized in this function arch/powerpc/mm/hugetlbpage.c: In function 'hugetlb_get_unmapped_area': arch/powerpc/mm/hugetlbpage.c:608: warning: unused variable 'vma' both fixes are trivial. Signed-off-by:
Arnd Bergmann <arnd@arndb.de> Signed-off-by:
-
Paul Mackerras authored
Grrr.... Signed-off-by: -
Arnd Bergmann authored
include/asm-ppc/ had #ifdef __KERNEL__ in all header files that are not meant for use by user space, include/asm-powerpc does not have this yet. This patch gets us a lot closer there. There are a few cases where I was not sure, so I left them out. I have verified that no CONFIG_* symbols are used outside of __KERNEL__ any more and that there are no obvious compile errors when including any of the headers in user space libraries. Signed-off-by:
-
David Gibson authored
Oops, forgot to compile the VMALLOCBASE/VMALLOC_START patch on iSeries. VMALLOC_START is defined in pgtable.h whereas previously VMALLOCBASE was previously defined in page.h. lparmap.c needs to be updated appropriately. Booted on iSeries RS64 (now). Signed-off-by:
David Gibson <dwg@au1.ibm.com> Signed-off-by:
-
Andy Fleming authored
This patch adds oprofile support for the 7450 and all its multitudinous derivatives. * Added 7450 (and derivatives) support for oprofile * Changed e500 cputable to have oprofile model and cpu_type fields * Added support for classic 32-bit performance monitor interrupt * Cleaned up common powerpc oprofile code to be as common as possible * Cleaned up oprofile_impl.h to reflect 32 bit classic code * Added 32-bit MMCRx bitfield definitions and SPR numbers Signed-off-by:
Andy Fleming <afleming@freescale.com> Signed-off-by:
-
Kumar Gala authored
pci_address_to_pio is missing a closing curly brace Signed-off-by:
-
Benjamin Herrenschmidt authored
This fixes pci_address_to_pio() to return an unsigned long (to be safe) and fixes a bug in the implementation that caused it to return a bogus IO port number Signed-off-by:
Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by:
-
Kristian Mueller authored
Fix compilation of via-pmu.c without Power Management support. Signed-off-by: -
David Gibson authored
On ppc64, we independently define VMALLOCBASE and VMALLOC_START to be the same thing: the start of the vmalloc() area at 0xd000000000000000. VMALLOC_START is used much more widely, including in generic code, so this patch gets rid of the extraneous VMALLOCBASE. This does require moving the definitions of region IDs from page_64.h to pgtable.h, but they don't clearly belong in the former rather than the latter, anyway. While we're moving them, clean up the definitions of the REGION_IDs: - Abolish REGION_SIZE, it was only used once, to define REGION_MASK anyway - Define the specific region ids in terms of the REGION_ID() macro. - Define KERNEL_REGION_ID in terms of PAGE_OFFSET rather than KERNELBASE. It amounts to the same thing, but conceptually this is about the region of the linear mapping (which starts at PAGE_OFFSET) rather than of the kernel text itself (which is at KERNELBASE). Signed-off-by:
David Gibson <david@gibson.dropbear.id.au> Signed-off-by:
-
Benjamin Herrenschmidt authored
The patch enabling the new G5's with U4 broke initialization of the DART driver, causing it to trigger a BUG_ON for a case that is actually valid. This patch fixes it: Signed-off-by:
-
Benjamin Herrenschmidt authored
This adds some very basic support for the new machines, including the Quad G5 (tested), and other new dual core based machines and iMac G5 iSight (untested). This is still experimental ! There is no thermal control yet, there is no proper handing of MSIs, etc.. but it boots, I have all 4 cores up on my machine. Compared to the previous version of this patch, this one adds DART IOMMU support for the U4 chipset and thus should work fine on setups with more than 2Gb of RAM. Signed-off-by:
-
Kumar Gala authored
Added the ability to determine if an outbound window in the PCI host controller is for prefetchable memory and report it as such. Signed-off-by:
-
linas authored
There is code in the RPAPHP directory that is identical to this routine; I'll be removing that code in an upcoming patch, but this patch is needed to expose the function to make it callable. Signed-off-by:
-
Segher Boessenkool authored
Cleanup the MPIC IO-APIC workarounds, make them a bit more generic, smaller and faster. Signed-off-by:
Segher Boessenkool <segher@kernel.crashing.org> Signed-off-by:
-
Benjamin Herrenschmidt authored
The pre-parsed addrs/n_addrs fields in struct device_node are finally gone. Remove the dodgy heuristics that did that parsing at boot and remove the fields themselves since we now have a good replacement with the new OF parsing code. This patch also fixes a bunch of drivers to use the new code instead, so that at least pmac32, pseries, iseries and g5 defconfigs build. Signed-off-by:
-
Benjamin Herrenschmidt authored
The platinumfb driver used only on some powermacs has an issue with some video modes & limited VRAM. This patch fixes it. Signed-off-by:
-
Benjamin Herrenschmidt authored
This adds a defconfig for PowerMac with ARCH=powerpc Signed-off-by:
-
Anton Blanchard authored
Remove a comment in head.S which is no longer relevant. Signed-off-by:
Anton Blanchard <anton@samba.org> Signed-off-by:
-
Anton Blanchard authored
Milton and I were looking at the cputable code and it looks like we can set spurious bits on 64bit. Signed-off-by:
-
Anton Blanchard authored
We used to print a NUMA cpu summary at boot before the hotplug cpu code was added. This has been useful for catching machine configuration as well as firmware bugs in the past. This patch restores that functionality. An example of the output is: Node 0 CPUs: 0-7 Node 1 CPUs: 8-15 Signed-off-by:
-
Nicolas Kaiser authored
Add three files not mentioned in Documentation/powerpc/00-INDEX. Sort alphabetically. Signed-off-by:
Nicolas Kaiser <nikai@nikai.net> Signed-off-by:
-
Arnd Bergmann authored
/dev/nvram uses the user-provided read/write size for kmalloc, which fails, if a large number is passed. This will always use a single page at most, which can be expected to succeed. Signed-off-by:
Arnd Bergmann <arndb@de.ibm.com> Signed-off-by:
-
David Woodhouse authored
We currently crash in the fedora installer because the keyboard driver tries to access I/O space that is not there on our hardware. This uses the same solution as powermac by just marking all legacy i/o as invalid. Signed-off-by:
-
Jens.Osterkamp@de.ibm.com authored
So far, the iommu code was hardwired to a linear mapping between 0x20000000 and 0x40000000, so it could only support 512MB of RAM. This patch still keeps the linear mapping, but looks for proper ibm,dma-window properties to set up larger windows, this makes the maximum supported RAM size 2GB. If there is anything unusual about the dma-window properties, we fall back to the old behavior. We also support switching off the iommu completely now with the regular iommu=off command line option. Signed-off-by:
-
Arnd Bergmann authored
Because of always clearing DSISR at spu class 1 interrupt handler, kernel may lose Class1[Mf] interrupt. Signed-off-by:
Masato Noguchi <Masato.Noguchi@jp.sony.com> Signed-off-by:
Geoff Levand <geoff.levand@am.sony.com> Signed-off-by:
-
Arnd Bergmann authored
Output from hexdump with "%08x" depends on HOST platform's endian. When building linux by cross toolchain, that difference makes errors. Signed-off-by:
-
Arnd Bergmann authored
One of my last patches contained a broken line from splitting out some other changes, this restores a working version. Signed-off-by:
-
Arnd Bergmann authored
One of the two users of spufs_calls.owner still has a race when calling try_module_get while the module is removed. This makes it use the correct instance of owner. Noticed by Milton Miller. Signed-off-by:
-
Kumar Gala authored
This patch adds support for the TQ Components TQM85xx modules. Currently the modules TQM8540/8541/8555/8560 are supported. Signed-off-by:
Stefan Roese <sr@denx.de> Signed-off-by:
-
Arnd Bergmann authored
I can't really get a conclusive answer from the firmware people what to check for, so I just try scanning for anything that starts with "IBM,CPB", which should be correct for all hardware produced so far and for systemsim. Signed-off-by:
-
Arnd Bergmann authored
Handling mailbox interrupts was broken in multiple respects, the combination of which was hiding the bugs most of the time. - The ibox interrupt mask was open initially even though there are no waiters on a newly created SPU. - Acknowledging the mailbox interrupt did not work because it is level triggered and the mailbox data is never retrieved from inside the interrupt handler. - The interrupt handler delivered interrupts with a disabled mask if another interrupt is triggered for the same class but a different mask. - The poll function did not enable the interrupt if it had not been enabled, so we might run into the poll timeout if none of the other bugs saved us and no signal was delivered. We probably still have a similar problem with blocking read/write on mailbox files, but that will result in extra wakeup in the worst case, not in incorrect behaviour. Signed-off-by:
-
Arnd Bergmann authored
This patch reduces lock complexity of SPU scheduler, particularly for involuntary preemptive switches. As a result the new code does a better job of mapping the highest priority tasks to SPUs. Lock complexity is reduced by using the system default workqueue to perform involuntary saves. In this way we avoid nasty lock ordering problems that the previous code had. A "minimum timeslice" for SPU contexts is also introduced. The intent here is to avoid thrashing. While the new scheduler does a better job at prioritization it still does nothing for fairness. From: Mark Nutter <mnutter@us.ibm.com> Signed-off-by:
-
