- 16 Jun, 2009 4 commits
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Nate Case authored
Some boot loaders may not enable L1 instruction/data cache. Check if data and instruction caches are enabled, and enable them if needed. Signed-off-by:
Nate Case <ncase@xes-inc.com> Signed-off-by:
Kumar Gala <galak@kernel.crashing.org>
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Wolfgang Denk authored
The current device tree for the MPC8272ADS assumes a mapping of 32 MB of NOR flash at 0xFE00.0000, while there are actually only 8 MB on the boards, mapped at 0xFF80.0000. When booting an uImage with such a device tree, the kernel crashes because 0xFE00.0000 is not mapped. Also introduce aliases for serial[01] and ethernet[01]. Signed-off-by:
Wolfgang Denk <wd@denx.de> Cc: Scott Wood <scottwood@freescale.com> Signed-off-by:
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Kumar Gala authored
Add the platform-specific code for enabling SWIOTLB if needed on P2020DS, MPC85xx DS, and MPC85xx MDS boards as they are capable of having >4G of memory. We determine if we need to enable swiotlb based on how much memory is in the board and if it exceeds 4G or what we can map via PCI inbound windows. Signed-off-by: -
Becky Bruce authored
This is the final bit of code to allow enabling swiotlb on mpc86xx. The platform-specific code is very small and consists of enabling SWIOTLB in the config file, registering the swiotlb_setup_bus_notifier initcall, and setting pci_dma_ops to point to swiotlb_pci_dma_ops if we have more memory than can be mapped by the inbound PCI windows. Signed-off-by:
Becky Bruce <beckyb@kernel.crashing.org> Signed-off-by:
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- 15 Jun, 2009 36 commits
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Geert Uytterhoeven authored
Signed-off-by:
Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com> Signed-off-by:
Benjamin Herrenschmidt <benh@kernel.crashing.org>
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Geert Uytterhoeven authored
Add support for caching, to reduce FLASH wear when writing using small blocksizes. As we also don't care anymore about heads and tails in case of partial writes, this greatly simplifies the code for handling writes. Note: We don't bother caching reads smaller than the FLASH chunk size (256 KiB). Signed-off-by:
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Geert Uytterhoeven authored
Currently the FLASH database is updated by the kernel using file operations, meant for userspace only. While this works for us because copy_{from,to}_user() on powerpc can handle kernel pointers, this is unportable and a bad example. Replace the file operations by callbacks, registered by the ps3flash driver. Signed-off-by:Geoff Levand <geoffrey.levand@am.sony.com> Signed-off-by:
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Geert Uytterhoeven authored
They were never intended to be exported using EXPORT_SYMBOL() anyway Signed-off-by:
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Geert Uytterhoeven authored
It reports the failure of a call to lv1_put_iopte(), not lv1_map_device_dma_region(). Signed-off-by:
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Geert Uytterhoeven authored
probe functions should be __devinit initialization functions should be __init Signed-off-by:
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Geert Uytterhoeven authored
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Geert Uytterhoeven authored
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Geert Uytterhoeven authored
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Geert Uytterhoeven authored
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Roel Kluin authored
In the near future, the driver core is going to not allow direct access to the driver_data pointer in struct device. Instead, the functions dev_get_drvdata() and dev_set_drvdata() should be used. These functions have been around since the beginning, so are backwards compatible with all older kernel versions. [Geert: Use ps3_system_bus_[gs]et_driver_data() for ps3_system_bus_device] Signed-off-by:
Roel Kluin <roel.kluin@gmail.com> Signed-off-by:
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Geert Uytterhoeven authored
So we can kill a cast. Signed-off-by:
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Geert Uytterhoeven authored
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Geert Uytterhoeven authored
Remove the mutex serializing access to the cache. Instead, queue up new requests on a bio_list if the driver is busy. This improves sequential write performance by ca. 2%. Signed-off-by:
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Geert Uytterhoeven authored
Introduce bio_list_peek(), to obtain a pointer to the first bio on the bio_list without actually removing it from the list. This is needed when you want to serialize based on the list being empty or not. Signed-off-by:
Jens Axboe <axboe@kernel.dk> Signed-off-by:
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Paul Mackerras authored
This makes 32-bit powerpc use the generic atomic64_t implementation. Signed-off-by:
Paul Mackerras <paulus@samba.org> Signed-off-by:
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Paul Mackerras authored
Many processor architectures have no 64-bit atomic instructions, but we need atomic64_t in order to support the perf_counter subsystem. This adds an implementation of 64-bit atomic operations using hashed spinlocks to provide atomicity. For each atomic operation, the address of the atomic64_t variable is hashed to an index into an array of 16 spinlocks. That spinlock is taken (with interrupts disabled) around the operation, which can then be coded non-atomically within the lock. On UP, all the spinlock manipulation goes away and we simply disable interrupts around each operation. In fact gcc eliminates the whole atomic64_lock variable as well. Signed-off-by:
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Paul Mackerras authored
On 32-bit non-Book E, local_irq_restore() turns into just mtmsr(), which doesn't currently have a compiler memory barrier. This means that accesses to memory inside a local_irq_save/restore section, or a spin_lock_irqsave/spin_unlock_irqrestore section on UP, can be reordered by the compiler to occur outside that section. To fix this, this adds a compiler memory barrier to mtmsr for both 32-bit and 64-bit. Having a compiler memory barrier in mtmsr makes sense because it will almost always be changing something about the context in which memory accesses are done, so in general we don't want memory accesses getting moved from one side of an mtmsr to the other. With the barrier in mtmsr(), some of the explicit barriers in hw_irq.h are now redundant, so this removes them. Signed-off-by:
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Michael Ellerman authored
signal_vsp_instruction() is currently only used if CONFIG_PROC_FS is enabled. However logically it has nothing to do with PROC_FS, so rather than making it depend on that mark it as maybe unused. Signed-off-by:
Michael Ellerman <michael@ellerman.id.au> Signed-off-by:
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Michael Ellerman authored
If CONFIG_BLK_DEV_INITRD is unset dt_prop_u64() is unused, which causes a warning. We don't really want to tie the definition to BLK_DEV_INITRD, so mark it as maybe unused. Signed-off-by:
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Michael Ellerman authored
Commit 28794d34 ("powerpc/kconfig: Kill PPC_MULTIPLATFORM"), added CONFIG_PPC_OF_BOOT_TRAMPOLINE to control the buliding of prom_init.o However the Makefile still unconditionally builds prom_init_check, the script that checks prom_init.o for symbol usage, and so in turn prom_init.o is still always being built. (it's not linked though) So surround all the prom_init_check logic with an ifeq block testing if CONFIG_PPC_OF_BOOT_TRAMPOLINE is set. Signed-off-by:
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Stephen Rothwell authored
Signed-off-by:
Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by:
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Michael Ellerman authored
The Axon MSI driver incorrectly uses platform_data, rather than the proper accessors for driver_data. Signed-off-by:
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Michael Ellerman authored
When CONFIG_RELOCATABLE is enabled, PHYSICAL_START is actually a variable of type phys_addr_t. That means to print it we need to cast to unsigned long long and use llx. Signed-off-by:
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Geert Uytterhoeven authored
During cleanup, use L1GPU_CONTEXT_ATTRIBUTE_FB_CLOSE to tear down the setup done by L1GPU_CONTEXT_ATTRIBUTE_FB_SETUP. This allows unloading and reloading of ps3fb while the sound driver keeps the GPU open. Signed-off-by:
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Geert Uytterhoeven authored
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Geert Uytterhoeven authored
- Make the IOMMU flags used for mapping main memory into the GPU's I/O space explicit, instead of relying on the default in the hypervisor, - Add missing calls to lv1_gpu_context_iomap(..., CBE_IOPTE_M) to unmap the memory during cleanup. Signed-off-by: -
Geert Uytterhoeven authored
- Make the IOMMU flags used for mapping main memory into the GPU's I/O space explicit, instead of relying on the default in the hypervisor, - Add missing calls to lv1_gpu_context_iomap(..., CBE_IOPTE_M) to unmap the memory during cleanup. Signed-off-by: -
Geert Uytterhoeven authored
Both arch/powerpc/platforms/cell/iommu.c and arch/powerpc/platforms/ps3/mm.c contain the same Cell IOMMU page table entry definitions. Extract them and move them to <asm/iommu.h>, while adding a CBE_ prefix. This also allows them to be used by drivers. Signed-off-by:
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Geert Uytterhoeven authored
- ps3_open_hv_device() returns a standard error value, - Add missing call to ps3_close_hv_device() in the error path. Signed-off-by:
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Geert Uytterhoeven authored
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Geert Uytterhoeven authored
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Jim Paris authored
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Geert Uytterhoeven authored
Use proc_create_data() to avoid race conditions. Reported-by:
Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by:
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Geert Uytterhoeven authored
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sebastian.blanes@gmail.com authored
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