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nlm_swiotlb_dma_ops is unused code, so the whole swiotlb support is dead.
If it gets resurrected at some point it should use the generic
swiotlb_dma_ops instead.
Signed-off-by: Christoph Hellwig <[email protected]>
Acked-by: Christian König <[email protected]>
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smp_ops providers do not modify their ops structures, so they should be
made const for robustness. Since currently the MIPS kernel is not mapped
with memory protection, this does not in itself provide any security
benefit, but it still makes sense to make this change.
There are also slight code size efficincies from the structure being
made read-only, saving 128 bytes of kernel text on a
pistachio_defconfig.
Before:
text data bss dec hex filename
7187239 1772752 470224 9430215 8fe4c7 vmlinux
After:
text data bss dec hex filename
7187111 1772752 470224 9430087 8fe447 vmlinux
Signed-off-by: Matt Redfearn <[email protected]>
Cc: Sebastian Andrzej Siewior <[email protected]>
Cc: Arnd Bergmann <[email protected]>
Cc: Marcin Nowakowski <[email protected]>
Cc: Bart Van Assche <[email protected]>
Cc: Masahiro Yamada <[email protected]>
Cc: Huacai Chen <[email protected]>
Cc: Paul Gortmaker <[email protected]>
Cc: Kevin Cernekee <[email protected]>
Cc: Thomas Gleixner <[email protected]>
Cc: Doug Ledford <[email protected]>
Cc: James Hogan <[email protected]>
Cc: Joe Perches <[email protected]>
Cc: Florian Fainelli <[email protected]>
Cc: Ingo Molnar <[email protected]>
Cc: Paul Burton <[email protected]>
Cc: Andrew Morton <[email protected]>
Cc: Steven J. Hill <[email protected]>
Cc: [email protected]
Cc: [email protected]
Patchwork: https://patchwork.linux-mips.org/patch/16784/
Signed-off-by: Ralf Baechle <[email protected]>
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Most dma_map_ops structures are never modified. Constify these
structures such that these can be write-protected. This patch
has been generated as follows:
git grep -l 'struct dma_map_ops' |
xargs -d\\n sed -i \
-e 's/struct dma_map_ops/const struct dma_map_ops/g' \
-e 's/const struct dma_map_ops {/struct dma_map_ops {/g' \
-e 's/^const struct dma_map_ops;$/struct dma_map_ops;/' \
-e 's/const const struct dma_map_ops /const struct dma_map_ops /g';
sed -i -e 's/const \(struct dma_map_ops intel_dma_ops\)/\1/' \
$(git grep -l 'struct dma_map_ops intel_dma_ops');
sed -i -e 's/const \(struct dma_map_ops dma_iommu_ops\)/\1/' \
$(git grep -l 'struct dma_map_ops' | grep ^arch/powerpc);
sed -i -e '/^struct vmd_dev {$/,/^};$/ s/const \(struct dma_map_ops[[:blank:]]dma_ops;\)/\1/' \
-e '/^static void vmd_setup_dma_ops/,/^}$/ s/const \(struct dma_map_ops \*dest\)/\1/' \
-e 's/const \(struct dma_map_ops \*dest = \&vmd->dma_ops\)/\1/' \
drivers/pci/host/*.c
sed -i -e '/^void __init pci_iommu_alloc(void)$/,/^}$/ s/dma_ops->/intel_dma_ops./' arch/ia64/kernel/pci-dma.c
sed -i -e 's/static const struct dma_map_ops sn_dma_ops/static struct dma_map_ops sn_dma_ops/' arch/ia64/sn/pci/pci_dma.c
sed -i -e 's/(const struct dma_map_ops \*)//' drivers/misc/mic/bus/vop_bus.c
Signed-off-by: Bart Van Assche <[email protected]>
Reviewed-by: Christoph Hellwig <[email protected]>
Cc: Benjamin Herrenschmidt <[email protected]>
Cc: Boris Ostrovsky <[email protected]>
Cc: David Woodhouse <[email protected]>
Cc: Juergen Gross <[email protected]>
Cc: H. Peter Anvin <[email protected]>
Cc: Ingo Molnar <[email protected]>
Cc: [email protected]
Cc: [email protected]
Cc: Russell King <[email protected]>
Cc: [email protected]
Signed-off-by: Doug Ledford <[email protected]>
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Most interrupt flow handlers do not use the irq argument. Those few
which use it can retrieve the irq number from the irq descriptor.
Remove the argument.
Search and replace was done with coccinelle and some extra helper
scripts around it. Thanks to Julia for her help!
Signed-off-by: Thomas Gleixner <[email protected]>
Cc: Julia Lawall <[email protected]>
Cc: Jiang Liu <[email protected]>
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Use the current_cpu_data package field to get the node of the current CPU.
This allows us to remove xlp_cores_per_node and move nlm_threads_per_node()
and nlm_cores_per_node() to netlogic/common.h, which simplifies code.
Signed-off-by: Jayachandran C <[email protected]>
Cc: [email protected]
Patchwork: https://patchwork.linux-mips.org/patch/8889/
Signed-off-by: Ralf Baechle <[email protected]>
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Add mach-netlogic/topology.h which contains XLP cpu number to core and
node mapping.
Signed-off-by: Jayachandran C <[email protected]>
Signed-off-by: John Crispin <[email protected]>
Patchwork: http://patchwork.linux-mips.org/patch/6271/
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Add MSI chip and MSIX chip definitions.
For MSI, we map the link interrupt to a MSI link IRQ which will
do a second level of dispatch based on the MSI status register.
The MSI chip definitions use the MSI enable register to enable
and disable the MSI irqs.
For MSI-X, we split the 32 available MSI-X vectors across the
four PCIe links (8 each). These PIC interrupts generate an IRQ
per link which uses a second level dispatch as well.
The MSI-X chip definition uses the standard functions to enable
and disable interrupts.
Signed-off-by: Jayachandran C <[email protected]>
Signed-off-by: John Crispin <[email protected]>
Patchwork: http://patchwork.linux-mips.org/patch/6270/
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Move the nlm_cpu_ready[] array used by the cpu wakeup code to the
boot area, along with rest of the boot parameter code.
Signed-off-by: Jayachandran C <[email protected]>
Cc: [email protected]
Patchwork: https://patchwork.linux-mips.org/patch/5425/
Signed-off-by: Ralf Baechle <[email protected]>
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This moves the calculation and casting needed to access the CPU initialization
data to a function nlm_get_boot_data()
Signed-off-by: Jayachandran C <[email protected]>
Cc: [email protected]
Patchwork: https://patchwork.linux-mips.org/patch/5426/
Signed-off-by: Ralf Baechle <[email protected]>
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The reset and core initialization code should be available for
uniprocessor as well. This changes is just to take out the code
into a different file, without any change to the logic.
The change for uniprocessor initialization code is in a later patch.
Signed-off-by: Jayachandran C <[email protected]>
Cc: [email protected]
Patchwork: https://patchwork.linux-mips.org/patch/5423/
Signed-off-by: Ralf Baechle <[email protected]>
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Add SWIOTLB config option and related files to Netlogic platform.
Some XLP SoC components like the SD/MMC interface cannot do DMA beyond
32-bit physical address. The SD/MMC driver can use memory outside this
range for IO, to support this we have to add bounce buffers implemented
by SWIOTLB.
Signed-off-by: Jayachandran C <[email protected]>
Cc: [email protected]
Cc: Ganesan Ramalingam <[email protected]>
Patchwork: https://patchwork.linux-mips.org/patch/5410/
Signed-off-by: Ralf Baechle <[email protected]>
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Having received another series of whitespace patches I decided to do this
once and for all rather than dealing with this kind of patches trickling
in forever.
Signed-off-by: Ralf Baechle <[email protected]>
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On XLR/XLS, the cpu cores communicate with fast on-chip devices
(e.g. network accelerator, security engine etc.) using the Fast
Messaging Network(FMN). The FMN queues and credits needs to be
configured and intialized before it can be used.
The co-processor 2 on XLR/XLS CPU cores has registers for FMN access,
and the XLR/XLS has custom instructions for sending and loading
messages. The FMN can deliver also per-cpu interrupts when messages
are available at the CPU.
This patch adds FMN initialization, adds interrupt setup and handling,
and also provides support for sending and receiving FMN messages.
Signed-off-by: Ganesan Ramalingam <[email protected]>
Signed-off-by: Jayachandran C <[email protected]>
Patchwork: http://patchwork.linux-mips.org/patch/4468
Signed-off-by: John Crispin <[email protected]>
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Create struct nlm_pic_irq for interrupts handled by the PIC.
This simplifies IRQ handling for multi-SoC as well as
the single SoC cases. Also split the setup of percpu and PIC
interrupts so that we can configure the PIC interrupts for
every node.
Signed-off-by: Jayachandran C <[email protected]>
Patchwork: http://patchwork.linux-mips.org/patch/4467
Signed-off-by: John Crispin <[email protected]>
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There can be 1, 2 or 4 SoCs(nodes) in a multi-chip XLP board. Add an
option for multi-chip boards in case of XLP, and make the number of
nodes configurable.
Signed-off-by: Jayachandran C <[email protected]>
Patchwork: http://patchwork.linux-mips.org/patch/4470
Signed-off-by: John Crispin <[email protected]>
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Upto 4 Netlogic XLP SoCs can be connected over ICI links to form a
coherent multi-node system. Each SoC has its own set of on-chip
devices including PIC. To support this, add a per SoC stucture and
use it for the PIC and SYS block addresses instead of using global
variables.
Signed-off-by: Jayachandran C <[email protected]>
Patchwork: http://patchwork.linux-mips.org/patch/4469
Signed-off-by: John Crispin <[email protected]>
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Initial code to support more than 32 cpus. The platform CPU mask
is updated from 32-bit mask to cpumask_t. Convert places that use
cpu_/cpus_ functions to use cpumask_* functions.
Signed-off-by: Jayachandran C <[email protected]>
Patchwork: http://patchwork.linux-mips.org/patch/4464
Signed-off-by: John Crispin <[email protected]>
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Create a common NMI and reset handler in smpboot.S and use this for
both XLR and XLP. In the earlier code, the woken up CPUs would
busy wait until released, switch this to wakeup by NMI.
The initial wakeup code or XLR and XLP are differ since they are
started from different bootloaders (XLP from u-boot and XLR from
netlogic bootloader). But in both platforms the woken up CPUs wait
and are released by sending an NMI.
Add support for starting XLR and XLP in 1/2/4 threads per core.
Signed-off-by: Jayachandran C <[email protected]>
Cc: [email protected]
Patchwork: https://patchwork.linux-mips.org/patch/2970/
Signed-off-by: Ralf Baechle <[email protected]>
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- Move code that can be shared with XLP (irq.c, smp.c, time.c and
xlr_console.c) to arch/mips/netlogic/common
- Add asm/netlogic/haldefs.h and asm/netlogic/common.h for common and
io functions shared with XLP
- remove type 'nlm_reg_t *' and use uint64_t for mmio offsets
- Move XLR specific code in smp.c to xlr/wakeup.c
- Move XLR specific PCI code from irq.c to mips/pci/pci-xlr.c
- Provide API for pic functions called from common/irq.c
Signed-off-by: Jayachandran C <[email protected]>
Cc: [email protected]
Patchwork: https://patchwork.linux-mips.org/patch/2964/
Signed-off-by: Ralf Baechle <[email protected]>
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