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path: root/arch/mips/cavium-octeon/csrc-octeon.c
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2016-12-25clocksource: Use a plain u64 instead of cycle_tThomas Gleixner
There is no point in having an extra type for extra confusion. u64 is unambiguous. Conversion was done with the following coccinelle script: @rem@ @@ -typedef u64 cycle_t; @fix@ typedef cycle_t; @@ -cycle_t +u64 Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Peter Zijlstra <peterz@infradead.org> Cc: John Stultz <john.stultz@linaro.org>
2016-05-13MIPS: OCTEON: Don't attempt to use nonexistent registers on OCTEON III models.David Daney
Attempts to read the nonexistent registers results in bus errors. Either use registers that exist, or don't do the access as appropriate. Signed-off-by: David Daney <david.daney@cavium.com> Cc: linux-mips@linux-mips.org Cc: linux-kernel@vger.kernel.org Patchwork: https://patchwork.linux-mips.org/patch/12502/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2015-02-20MIPS: OCTEON: More OCTEONIII supportChandrakala Chavva
Read clock rate from the correct CSR. Don't clear COP0_DCACHE for OCTEONIII. Signed-off-by: Chandrakala Chavva <cchavva@caviumnetworks.com> Signed-off-by: Aleksey Makarov <aleksey.makarov@auriga.com> Signed-off-by: David Daney <david.daney@cavium.com> Cc: linux-mips@linux-mips.org Cc: linux-kernel@vger.kernel.org Patchwork: https://patchwork.linux-mips.org/patch/8945/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2013-09-17MIPS: Optimize current_cpu_type() for better code.Ralf Baechle
o Move current_cpu_type() to a separate header file o #ifdefing on supported CPU types lets modern GCC know that certain code in callers may be discarded ideally turning current_cpu_type() into a function returning a constant. o Use current_cpu_type() rather than direct access to struct cpuinfo_mips. Signed-off-by: Ralf Baechle <ralf@linux-mips.org> Cc: Steven J. Hill <Steven.Hill@imgtec.com> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/5833/
2012-08-31MIPS: Octeon: Add octeon_io_clk_delay() function.David Daney
Also cleanup and fix octeon_init_cvmcount() Signed-off-by: David Daney <ddaney@caviumnetworks.com> Acked-by: David S. Miller <davem@davemloft.net>
2011-10-31mips: add export.h to files using EXPORT_SYMBOL/THIS_MODULEPaul Gortmaker
Or else we get lots of variations on this: arch/mips/pci/pci.c:330: warning: type defaults to 'int' in declaration of 'EXPORT_SYMBOL' scattered throughout the build. Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
2011-02-21mips: convert to clocksource_register_hz/khzJohn Stultz
This converts the mips clocksources to use clocksource_register_hz/khz CC: Ralf Baechle <ralf@linux-mips.org> CC: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: John Stultz <johnstul@us.ibm.com>
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>
2010-08-05MIPS: 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: 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>
2010-01-12MIPS: 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>
2009-05-14MIPS: Cavium: Add struct clocksource * argument to octeon_cvmcount_read()Coly Li
This patch modifies parameter of octeon_cvmcount_read() from 'void' to 'struct clocksource *cs', which fixes compile warning for incompatible parameter type. Signed-off-by: Coly Li <coly.li@suse.de> Cc: David Daney <ddaney@caviumnetworks.com> Cc: Ingo Molnar <mingo@elte.hu> Reviewed-by: David Daney <ddaney@caviumnetworks.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2009-01-11MIPS: Add Cavium OCTEON processor support files to arch/mips/cavium-octeon.David Daney
These are the rest of the new files needed to add OCTEON processor support to the Linux kernel. Other than Makefile and Kconfig which should be obvious, we have: csrc-octeon.c -- Clock source driver for OCTEON. dma-octeon.c -- Helper functions for mapping DMA memory. flash_setup.c -- Register on-board flash with the MTD subsystem. octeon-irq.c -- OCTEON interrupt controller managment. octeon-memcpy.S -- Optimized memcpy() implementation. serial.c -- Register 8250 platform driver and early console. setup.c -- Early architecture initialization. smp.c -- OCTEON SMP support. octeon_switch.S -- Scheduler context switch for OCTEON. c-octeon.c -- OCTEON cache controller support. cex-oct.S -- OCTEON cache exception handler. asm/mach-cavium-octeon/*.h -- Architecture include files. Signed-off-by: Tomaso Paoletti <tpaoletti@caviumnetworks.com> Signed-off-by: David Daney <ddaney@caviumnetworks.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org> create mode 100644 arch/mips/cavium-octeon/Kconfig create mode 100644 arch/mips/cavium-octeon/Makefile create mode 100644 arch/mips/cavium-octeon/csrc-octeon.c create mode 100644 arch/mips/cavium-octeon/dma-octeon.c create mode 100644 arch/mips/cavium-octeon/flash_setup.c create mode 100644 arch/mips/cavium-octeon/octeon-irq.c create mode 100644 arch/mips/cavium-octeon/octeon-memcpy.S create mode 100644 arch/mips/cavium-octeon/serial.c create mode 100644 arch/mips/cavium-octeon/setup.c create mode 100644 arch/mips/cavium-octeon/smp.c create mode 100644 arch/mips/include/asm/mach-cavium-octeon/cpu-feature-overrides.h create mode 100644 arch/mips/include/asm/mach-cavium-octeon/dma-coherence.h create mode 100644 arch/mips/include/asm/mach-cavium-octeon/irq.h create mode 100644 arch/mips/include/asm/mach-cavium-octeon/kernel-entry-init.h create mode 100644 arch/mips/include/asm/mach-cavium-octeon/war.h create mode 100644 arch/mips/include/asm/octeon/octeon.h create mode 100644 arch/mips/kernel/octeon_switch.S create mode 100644 arch/mips/mm/c-octeon.c create mode 100644 arch/mips/mm/cex-oct.S
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