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2010-10-29MIPS: Add platform device and Kconfig for Octeon USB EHCI / OHCIDavid Daney
Declare that OCTEON reference boards have both OHCI and EHCI. Add platform devices for the corresponding hardware. Signed-off-by: David Daney <ddaney@caviumnetworks.com> To: linux-usb@vger.kernel.org To: dbrownell@users.sourceforge.net Patchwork: http://patchwork.linux-mips.org/patch/1676/ Acked-by: Greg Kroah-Hartman <gregkh@suse.de> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2010-10-29MIPS: Octeon: Apply CN63XXP1 errata workarounds.David Daney
The CN63XXP1 needs a couple of workarounds to ensure memory is not written in unexpected ways. All PREF with hints in the range 0-4,6-24 are replaced with PREF 28. We pass a flag to the assembler to cover compiler generated code, and patch uasm for the dynamically generated code. The write buffer threshold is reduced to 4. Signed-off-by: David Daney <ddaney@caviumnetworks.com> Patchwork: http://patchwork.linux-mips.org/patch/1672/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2010-10-29MIPS: Octeon: Use I/O clock rate for calculations.David Daney
The I2C and UARTS are clocked by the I/O clock, use its rate for these devices. Signed-off-by: David Daney <ddaney@caviumnetworks.com> Patchwork: http://patchwork.linux-mips.org/patch/1670/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2010-10-29MIPS: Octeon: Add octeon_get_io_clock_rate() for cn63xxDavid Daney
Starting with cn63xx Octeon I/O blocks are clocked at a different rate than the CPU. Add a new function octeon_get_io_clock_rate() that yields the I/O clock rate. Also rearrange octeon_get_clock_rate() to get the value from the saved sysinfo structure. Signed-off-by: David Daney <ddaney@caviumnetworks.com> Patchwork: http://patchwork.linux-mips.org/patch/1671/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2010-10-29MIPS: Octeon: Remove bogus code from octeon_get_clock_rate()David Daney
We can run with any simulator clock rate. Get rid of the code overriding it to 6MHz. Signed-off-by: David Daney <ddaney@caviumnetworks.com> Patchwork: http://patchwork.linux-mips.org/patch/1669/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2010-10-29MIPS: Octeon: Scale Octeon2 clocks in octeon_init_cvmcount()David Daney
The per-CPU clocks are synchronized from IPD_CLK_COUNT, on cn63XX it must be scaled by the clock frequency ratio. Signed-off-by: David Daney <ddaney@caviumnetworks.com> Patchwork: http://patchwork.linux-mips.org/patch/1667/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2010-10-29MIPS: Octeon: Update L2 Cache code for CN63XXDavid Daney
The CN63XX has a different L2 cache architecture. Update the helper functions to reflect this. Some joining of split lines was also done to improve readability, as well as reformatting of comments. Signed-off-by: David Daney <ddaney@caviumnetworks.com> Patchwork: http://patchwork.linux-mips.org/patch/1663/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2010-10-29MIPS: Octeon: Rewrite DMA mapping functions.David Daney
All Octeon chips can support more than 4GB of RAM. Also due to how Octeon PCI is setup, even some configurations with less than 4GB of RAM will have portions that are not accessible from 32-bit devices. Enable the swiotlb code to handle the cases where a device cannot directly do DMA. This is a complete rewrite of the Octeon DMA mapping code. Signed-off-by: David Daney <ddaney@caviumnetworks.com> Patchwork: http://patchwork.linux-mips.org/patch/1639/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2010-10-29MIPS: Octeon: Set dma_masks for octeon_mgmt device.David Daney
This allows follow-on patches to dma mapping functions to work with the octeon mgmt device.. Signed-off-by: David Daney <ddaney@caviumnetworks.com> Patchwork: http://patchwork.linux-mips.org/patch/1632/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2010-10-07MIPS: Add missing #inclusions of <linux/irq.h>David Howells
Add missing #inclusions of <linux/irq.h> to a whole bunch of files that should really include it. Note that this can replace #inclusions of <asm/irq.h>. This is required for the patch to sort out irqflags handling function naming to compile on MIPS. The problem is that these files require access to things like setup_irq() - which isn't available by #including <linux/interrupt.h> Signed-off-by: David Howells <dhowells@redhat.com> Acked-by: Ralf Baechle <ralf@linux-mips.org>
2010-10-04MIPS: Octeon: Place cnmips_cu2_setup in __init memory.David Daney
It is an early_initcall, so it should be in __init memory. Signed-off-by: David Daney <ddaney@caviumnetworks.com> To: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/1593/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2010-10-04MIPS: Octeon: Determine if helper needs to be builtAndreas Bießmann
This patch adds an config switch to determine if we need to build some workaround helper files. The staging driver octeon-ethernet references some symbols which are only built when PCI is enabled. The new config switch enables these symbols in bothe cases. Signed-off-by: Andreas Bießmann <biessmann@corscience.de> To: linux-kernel@vger.kernel.org Cc: Andreas Bießmann <biessmann@corscience.de> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/1543/ Acked-by: David Daney <ddaney@caviumnetworks.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2010-08-05MIPS: Octeon: Allow more than 3.75GB of memory with PCIeDavid Daney
We reserve the 3.75GB - 4GB region of PCIe address space for device to device transfers, making the corresponding physical memory under direct mapping unavailable for DMA. To allow for PCIe DMA to all physical memory we map this chunk of physical memory with BAR1. Because of the resulting discontinuity in the mapping function, we remove a page of memory at each end of the range so multi-page DMA buffers can never be allocated that span the range. Signed-off-by: David Daney <ddaney@caviumnetworks.com> To: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/1535/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2010-08-05MIPS: Octeon: Export prom_putchar().David Daney
The forthcoming watchdog driver will use it. Signed-off-by: David Daney <ddaney@caviumnetworks.com> To: linux-mips@linux-mips.org To: wim@iguana.be Cc: linux-kernel@vger.kernel.org Patchwork: https://patchwork.linux-mips.org/patch/1499/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2010-08-05MIPS: Octeon: Implement delays with cycle counter.David Daney
Power throttling make deterministic delay loops impossible. Re-implement delays using the cycle counter. This also allows us to get rid of the code that calculates loops per jiffy. Signed-off-by: David Daney <ddaney@caviumnetworks.com> To: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/1317/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2010-08-05MIPS: Octeon: HOTPLUG_CPU fixes.David Daney
* Rename camel-case InitTLBStart_addr to octeon_bootloader_entry_addr. * Convert calls to cvmx_read64_uint32(), to simple pointer dereferences. * Set proper ebase. * Don't confuse coreid and cpu numbers. * Try to maintain consistent bootloader coremask. * Update the signature and boot_init_vector of supported bootloaders. Signed-off-by: David Daney <ddaney@caviumnetworks.com> To: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/1491/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2010-08-05MIPS: Octeon: Simplify hotcpu_notifier registration.David Daney
Signed-off-by: David Daney <ddaney@caviumnetworks.com> To: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/1490/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2010-08-05MIPS: Octeon: Clean up SMP CPU numbering.David Daney
Also number offline CPUs that could potentially be brought on-line later. Signed-off-by: David Daney <ddaney@caviumnetworks.com> To: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/1489/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2010-08-05MIPS: Octeon: Fix fixup_irqs for HOTPLUG_CPUDavid Daney
The original version went behind the back of everything, leaving things in an inconsistent state. Now we use the irq_set_affinity() to do the work for us. This has the advantage that the IRQ core's view of the affinity stays consistent. Signed-off-by: David Daney <ddaney@caviumnetworks.com> To: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/1486/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2010-08-05MIPS: Octeon: Improve interrupt handling.David Daney
The main change is to change most of the IRQs from handle_percpu_irq to handle_fasteoi_irq. This necessitates extracting all the .ack code to common functions that are not exposed to the irq core. The affinity code now acts more sanely, by doing round-robin distribution instead of broadcasting. Because of the change to handle_fasteoi_irq and affinity, some of the IRQs had to be split into separate groups with their own struct irq_chip to prevent undefined operations on specific IRQ lines. Signed-off-by: David Daney <ddaney@caviumnetworks.com> To: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/1485/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2010-08-05MIPS: Octeon: Move MSI code out of octeon-irq.c.David Daney
Put all the MSI code in one place (msi-octeon.c). This simplifies octeon-irq.c and gets rid of some ugly #ifdefs Signed-off-by: David Daney <ddaney@caviumnetworks.com> To: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/1484/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2010-08-05MIPS: Cavium: Remove dead CONFIG_GDB_CONSOLEChristoph Egger
CONFIG_GDB_CONSOLE doesn't exist in Kconfig, therefore removing all references for it from the source code. Signed-off-by: Christoph Egger <siccegge@cs.fau.de> To: David Daney <ddaney@caviumnetworks.com> To: Yang Shi <yang.shi@windriver.com> To: Herbert Xu <herbert@gondor.apana.org.au> To: Tejun Heo <tj@kernel.org> To: linux-mips@linux-mips.org To: linux-kernel@vger.kernel.org Cc: vamos@i4.informatik.uni-erlangen.de Patchwork: https://patchwork.linux-mips.org/patch/1368/ Acked-by: David Daney <ddaney@caviumnetworks.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2010-08-05MIPS: Provide more elevant interface cu2_notifier for CP2 extensions.Ralf Baechle
Signed-off-by: Ralf Baechle <ralf@linux-mips.org> Signed-off-by: David Daney <ddaney@caviumnetworks.com> Patchwork: https://patchwork.linux-mips.org/patch/1504/
2010-08-05MIPS: Octeon: Migrate to new platform makefile style.Ralf Baechle
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2010-08-05MIPS: Octeon: Workaround link failures with gcc-4.4.x 32-bits toolchainsFlorian Fainelli
When building with a gcc-4.4.x toolchain that is configured to produce 32-bits executables by default, we will produce __lshrti3 in sched_clock() which is never resolved so the kernel fails to link. Unconditionally use the inline assembly version as suggested by David Daney, which works around the issue. Signed-off-by: Florian Fainelli <florian@openwrt.org> To: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/1514/ Acked-by: David Daney <ddaney@caviumnetworks.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2010-05-21MIPS: Octeon: Serial port fixes for OCTEON simulator.David Daney
For the simulator, fake a slow clock to get fast output. In prom_putchar we have to mask the value so the simulator doesn't ASSERT when printing non-ASCII characters. Signed-off-by: David Daney <ddaney@caviumnetworks.com> To: linux-mips@linux-mips.org Patchwork: http://patchwork.linux-mips.org/patch/1255/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2010-05-21MIPS: Octeon: Get rid of early serial.David Daney
Get rid of early_serial_setup, we use CONFIG_EARLY_PRINTK instead. Signed-off-by: David Daney <ddaney@caviumnetworks.com> To: linux-mips@linux-mips.org Patchwork: http://patchwork.linux-mips.org/patch/1254/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2010-04-12MIPS: Octeon: Remove redundant declaration of octeon_reserve32_memoryYang Shi
octeon_reserve32_memory is defined In Octeon's setup.c, so remove the redundant extern declaration of this variable. Signed-off-by: Yang Shi <yang.shi@windriver.com> To: f.fainelli@gmail.com Cc: linux-mips@linux-mips.org Patchwork: http://patchwork.linux-mips.org/patch/1022/ Acked-by: David Daney <ddaney@caviumnetworks.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2010-04-12MIPS: Octeon: Remove #if 0 code.David Daney
Signed-off-by: David Daney <ddaney@caviumnetworks.com> To: linux-mips@linux-mips.org Patchwork: http://patchwork.linux-mips.org/patch/1029/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2010-04-12MIPS: Octeon: Remove vestiges of CONFIG_CAVIUM_RESERVE32_USE_WIRED_TLBDavid Daney
The config option CAVIUM_RESERVE32_USE_WIRED_TLB is not supported. Remove the dead code controlled by it. Signed-off-by: David Daney <ddaney@caviumnetworks.com> To: linux-mips@linux-mips.org Patchwork: http://patchwork.linux-mips.org/patch/1028/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2010-04-12MIPS: Cavium: Remove unused watchdog code.Ralf Baechle
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2010-02-27MIPS: Use ALIGN(x, bytes) instead of __ALIGN_MASK(x, bytes - 1)Matt Turner
ALIGN(x, bytes) expands to __ALIGN_MASK(x, bytes - 1), so use the one that is most clear. Signed-off-by: Matt Turner <mattst88@gmail.com> To: linux-mips@linux-mips.org Cc: David Daney <ddaney@caviumnetworks.com> Patchwork: http://patchwork.linux-mips.org/patch/999/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2010-02-27MIPS: Octeon: Replace spinlock with raw_spinlocks in dma-octeon.c.David Daney
Signed-off-by: David Daney <ddaney@caviumnetworks.com> Cc: linux-mips@linux-mips.org Patchwork: http://patchwork.linux-mips.org/patch/973/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2010-02-27MIPS: Octeon: Replace rwlocks in irq_chip handlers with raw_spinlocks.David Daney
Signed-off-by: David Daney <ddaney@caviumnetworks.com> Cc: linux-mips@linux-mips.org Patchwork: http://patchwork.linux-mips.org/patch/972/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2010-02-27MIPS: Octeon: Convert octeon_irq_msi_lock to raw spinlock.Ralf Baechle
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2010-02-27MIPS: Make various locks static.Ralf Baechle
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2010-02-27MIPS: Octeon: Do proper acknowledgment of CIU timer interrupts.David Daney
Signed-off-by: David Daney <ddaney@caviumnetworks.com> To: linux-mips@linux-mips.org To: netdev@vger.kernel.org To: gregkh@suse.de Patchwork: http://patchwork.linux-mips.org/patch/967/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2010-02-27MIPS: Remove trailing space in messagesFrans Pop
Signed-off-by: Frans Pop <elendil@planet.nl> To: linux-kernel@vger.kernel.org Cc: linux-mips@linux-mips.org Patchwork: http://patchwork.linux-mips.org/patch/946/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2010-02-27MIPS: Nuke trailing blank linesRalf Baechle
Recent git versions now warn about those and they've always been a bit of an annoyance. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2010-02-27MIPS: Octeon: Fix EOI handling.David Daney
If an interrupt handler disables interrupts, the EOI function will just reenable them. This will put us in an endless loop when the upcoming Ethernet driver patches are applied. Only reenable the interrupt on EOI if it is not IRQ_DISABLED. This requires that the EOI function be separate from the ENABLE function. We also rename the ACK functions to correspond with their function. Signed-off-by: David Daney <ddaney@caviumnetworks.com> To: linux-mips@linux-mips.org To: gregkh@suse.de Patchwork: http://patchwork.linux-mips.org/patch/840/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2010-02-27MIPS: Octeon: Register some devices on the I2C bus.David Daney
Signed-off-by: David Daney <ddaney@caviumnetworks.com> To: linux-mips@linux-mips.org To: linux-i2c@vger.kernel.org To: ben-linux@fluff.org To: khali@linux-fr.org Cc: Rade Bozic <rade.bozic.ext@nsn.com> Patchwork: http://patchwork.linux-mips.org/patch/845/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2010-02-27MIPS: Octeon: Add I2C platform device.David Daney
Signed-off-by: David Daney <ddaney@caviumnetworks.com> To: linux-mips@linux-mips.org To: linux-i2c@vger.kernel.org To: ben-linux@fluff.org To: khali@linux-fr.org Cc: Rade Bozic <rade.bozic.ext@nsn.com> Patchwork: http://patchwork.linux-mips.org/patch/847/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2010-01-12MIPS: Octeon: Use non-overflowing arithmetic in sched_clockDavid Daney
With typical mult and shift values, the calculation for Octeon's sched_clock overflows when using 64-bit arithmetic. Use 128-bit calculations instead. Signed-off-by: David Daney <ddaney@caviumnetworks.com> To: linux-mips@linux-mips.org Patchwork: http://patchwork.linux-mips.org/patch/849/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2010-01-12MIPS: Octeon: Add sched_clock() to csrc-octeon.cDavid Daney
With the advent of function graph tracing on MIPS, Octeon needs a high precision sched_clock() implementation. Without it, most timing numbers are reported as 0.000. This new sched_clock just uses the 64-bit cycle counter appropriately scaled. Signed-off-by: David Daney <ddaney@caviumnetworks.com> Patchwork: http://patchwork.linux-mips.org/patch/805/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2009-12-17MIPS: Modularize COP2 handlingRalf Baechle
Away with the daemons of ifdef; get ready for future COP2 users. Signed-off-by: Ralf Baechle <ralf@linux-mips.org> Patchwork: http://patchwork.linux-mips.org/patch/708/
2009-12-17MIPS: Octeon: Add platform devices MGMT Ethernet ports.David Daney
Signed-off-by: David Daney <ddaney@caviumnetworks.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2009-12-17MIPS: Octeon: Add platform device for MDIO buses.David Daney
Signed-off-by: David Daney <ddaney@caviumnetworks.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2009-11-02MIPS: Octeon: Use lockless interrupt controller operations when possible.David Daney
Some newer Octeon chips have registers that allow lockless operation of the interrupt controller. Take advantage of them. Signed-off-by: David Daney <ddaney@caviumnetworks.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2009-11-02MIPS: Octeon: Use write_{un,}lock_irq{restore,save} to set irq affinityDavid Daney
Since the locks are used from interrupt context we need the irqsave/irqrestore versions of the locking functions. Signed-off-by: David Daney <ddaney@caviumnetworks.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2009-11-02MIPS: Octeon: Fix compile error in arch/mips/cavium-octeon/smp.cDavid Daney
Signed-off-by: David Daney <ddaney@caviumnetworks.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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