c265735ff5
corenet{32/64}_smp_defconfig leads to: CC arch/powerpc/sysdev/ehv_pic.o arch/powerpc/sysdev/ehv_pic.c:45:6: error: no previous prototype for 'ehv_pic_unmask_irq' [-Werror=missing-prototypes] 45 | void ehv_pic_unmask_irq(struct irq_data *d) | ^~~~~~~~~~~~~~~~~~ arch/powerpc/sysdev/ehv_pic.c:52:6: error: no previous prototype for 'ehv_pic_mask_irq' [-Werror=missing-prototypes] 52 | void ehv_pic_mask_irq(struct irq_data *d) | ^~~~~~~~~~~~~~~~ arch/powerpc/sysdev/ehv_pic.c:59:6: error: no previous prototype for 'ehv_pic_end_irq' [-Werror=missing-prototypes] 59 | void ehv_pic_end_irq(struct irq_data *d) | ^~~~~~~~~~~~~~~ arch/powerpc/sysdev/ehv_pic.c:66:6: error: no previous prototype for 'ehv_pic_direct_end_irq' [-Werror=missing-prototypes] 66 | void ehv_pic_direct_end_irq(struct irq_data *d) | ^~~~~~~~~~~~~~~~~~~~~~ arch/powerpc/sysdev/ehv_pic.c:71:5: error: no previous prototype for 'ehv_pic_set_affinity' [-Werror=missing-prototypes] 71 | int ehv_pic_set_affinity(struct irq_data *d, const struct cpumask *dest, | ^~~~~~~~~~~~~~~~~~~~ arch/powerpc/sysdev/ehv_pic.c:112:5: error: no previous prototype for 'ehv_pic_set_irq_type' [-Werror=missing-prototypes] 112 | int ehv_pic_set_irq_type(struct irq_data *d, unsigned int flow_type) | ^~~~~~~~~~~~~~~~~~~~ CC arch/powerpc/sysdev/fsl_rio.o arch/powerpc/sysdev/fsl_rio.c:102:5: error: no previous prototype for 'fsl_rio_mcheck_exception' [-Werror=missing-prototypes] 102 | int fsl_rio_mcheck_exception(struct pt_regs *regs) | ^~~~~~~~~~~~~~~~~~~~~~~~ arch/powerpc/sysdev/fsl_rio.c:306:5: error: no previous prototype for 'fsl_map_inb_mem' [-Werror=missing-prototypes] 306 | int fsl_map_inb_mem(struct rio_mport *mport, dma_addr_t lstart, | ^~~~~~~~~~~~~~~ arch/powerpc/sysdev/fsl_rio.c:357:6: error: no previous prototype for 'fsl_unmap_inb_mem' [-Werror=missing-prototypes] 357 | void fsl_unmap_inb_mem(struct rio_mport *mport, dma_addr_t lstart) | ^~~~~~~~~~~~~~~~~ arch/powerpc/sysdev/fsl_rio.c:445:5: error: no previous prototype for 'fsl_rio_setup' [-Werror=missing-prototypes] 445 | int fsl_rio_setup(struct platform_device *dev) | ^~~~~~~~~~~~~ CC arch/powerpc/sysdev/fsl_rmu.o arch/powerpc/sysdev/fsl_rmu.c:362:6: error: no previous prototype for 'msg_unit_error_handler' [-Werror=missing-prototypes] 362 | void msg_unit_error_handler(void) | ^~~~~~~~~~~~~~~~~~~~~~ CC arch/powerpc/platforms/85xx/corenet_generic.o arch/powerpc/platforms/85xx/corenet_generic.c:33:13: error: no previous prototype for 'corenet_gen_pic_init' [-Werror=missing-prototypes] 33 | void __init corenet_gen_pic_init(void) | ^~~~~~~~~~~~~~~~~~~~ arch/powerpc/platforms/85xx/corenet_generic.c:51:13: error: no previous prototype for 'corenet_gen_setup_arch' [-Werror=missing-prototypes] 51 | void __init corenet_gen_setup_arch(void) | ^~~~~~~~~~~~~~~~~~~~~~ arch/powerpc/platforms/85xx/corenet_generic.c:104:12: error: no previous prototype for 'corenet_gen_publish_devices' [-Werror=missing-prototypes] 104 | int __init corenet_gen_publish_devices(void) | ^~~~~~~~~~~~~~~~~~~~~~~~~~~ CC arch/powerpc/platforms/85xx/qemu_e500.o arch/powerpc/platforms/85xx/qemu_e500.c:28:13: error: no previous prototype for 'qemu_e500_pic_init' [-Werror=missing-prototypes] 28 | void __init qemu_e500_pic_init(void) | ^~~~~~~~~~~~~~~~~~ CC arch/powerpc/kernel/pmc.o arch/powerpc/kernel/pmc.c:78:6: error: no previous prototype for 'power4_enable_pmcs' [-Werror=missing-prototypes] 78 | void power4_enable_pmcs(void) | ^~~~~~~~~~~~~~~~~~ Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://msgid.link/c90780017b624b91771a3e4240dcbadc68137915.1692684784.git.christophe.leroy@csgroup.eu
99 lines
2.2 KiB
C
99 lines
2.2 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* arch/powerpc/kernel/pmc.c
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*
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* Copyright (C) 2004 David Gibson, IBM Corporation.
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* Includes code formerly from arch/ppc/kernel/perfmon.c:
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* Author: Andy Fleming
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* Copyright (c) 2004 Freescale Semiconductor, Inc
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*/
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#include <linux/errno.h>
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#include <linux/bug.h>
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#include <linux/spinlock.h>
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#include <linux/export.h>
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#include <asm/processor.h>
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#include <asm/cputable.h>
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#include <asm/pmc.h>
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#ifndef MMCR0_PMAO
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#define MMCR0_PMAO 0
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#endif
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static void dummy_perf(struct pt_regs *regs)
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{
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#if defined(CONFIG_FSL_EMB_PERFMON)
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mtpmr(PMRN_PMGC0, mfpmr(PMRN_PMGC0) & ~PMGC0_PMIE);
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#elif defined(CONFIG_PPC64) || defined(CONFIG_PPC_BOOK3S_32)
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if (cur_cpu_spec->pmc_type == PPC_PMC_IBM)
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mtspr(SPRN_MMCR0, mfspr(SPRN_MMCR0) & ~(MMCR0_PMXE|MMCR0_PMAO));
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#else
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mtspr(SPRN_MMCR0, mfspr(SPRN_MMCR0) & ~MMCR0_PMXE);
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#endif
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}
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static DEFINE_RAW_SPINLOCK(pmc_owner_lock);
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static void *pmc_owner_caller; /* mostly for debugging */
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perf_irq_t perf_irq = dummy_perf;
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int reserve_pmc_hardware(perf_irq_t new_perf_irq)
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{
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int err = 0;
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raw_spin_lock(&pmc_owner_lock);
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if (pmc_owner_caller) {
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printk(KERN_WARNING "reserve_pmc_hardware: "
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"PMC hardware busy (reserved by caller %p)\n",
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pmc_owner_caller);
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err = -EBUSY;
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goto out;
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}
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pmc_owner_caller = __builtin_return_address(0);
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perf_irq = new_perf_irq ? new_perf_irq : dummy_perf;
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out:
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raw_spin_unlock(&pmc_owner_lock);
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return err;
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}
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EXPORT_SYMBOL_GPL(reserve_pmc_hardware);
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void release_pmc_hardware(void)
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{
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raw_spin_lock(&pmc_owner_lock);
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WARN_ON(! pmc_owner_caller);
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pmc_owner_caller = NULL;
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perf_irq = dummy_perf;
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raw_spin_unlock(&pmc_owner_lock);
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}
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EXPORT_SYMBOL_GPL(release_pmc_hardware);
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#ifdef CONFIG_PPC_BOOK3S_64
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void power4_enable_pmcs(void)
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{
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unsigned long hid0;
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hid0 = mfspr(SPRN_HID0);
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hid0 |= 1UL << (63 - 20);
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/* POWER4 requires the following sequence */
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asm volatile(
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"sync\n"
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"mtspr %1, %0\n"
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"mfspr %0, %1\n"
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"mfspr %0, %1\n"
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"mfspr %0, %1\n"
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"mfspr %0, %1\n"
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"mfspr %0, %1\n"
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"mfspr %0, %1\n"
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"isync" : "=&r" (hid0) : "i" (SPRN_HID0), "0" (hid0):
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"memory");
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}
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#endif /* CONFIG_PPC64 */
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