Release 4.14 arch/powerpc/include/asm/plpar_wrappers.h

Directory: arch/powerpc/include/asm
/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _ASM_POWERPC_PLPAR_WRAPPERS_H

#define _ASM_POWERPC_PLPAR_WRAPPERS_H

#include <linux/string.h>
#include <linux/irqflags.h>

#include <asm/hvcall.h>
#include <asm/paca.h>
#include <asm/page.h>

/* Get state of physical CPU from query_cpu_stopped */
int smp_query_cpu_stopped(unsigned int pcpu);

#define QCSS_STOPPED 0

#define QCSS_STOPPING 1

#define QCSS_NOT_STOPPED 2

#define QCSS_HARDWARE_ERROR -1

#define QCSS_HARDWARE_BUSY -2



static inline long poll_pending(void)
{
	return plpar_hcall_norets(H_POLL_PENDING);
}

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Benjamin Herrenschmidt 14 93.33% 1 50.00%
Anton Blanchard 1 6.67% 1 50.00%
Total 15 100.00% 2 100.00%



static inline u8 get_cede_latency_hint(void)
{
	return get_lppaca()->cede_latency_hint;
}

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Gautham R. Shenoy 15 100.00% 1 100.00%
Total 15 100.00% 1 100.00%



static inline void set_cede_latency_hint(u8 latency_hint)
{
	get_lppaca()->cede_latency_hint = latency_hint;
}

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Gautham R. Shenoy 17 100.00% 1 100.00%
Total 17 100.00% 1 100.00%



static inline long cede_processor(void)
{
	return plpar_hcall_norets(H_CEDE);
}

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Benjamin Herrenschmidt 14 93.33% 1 50.00%
Anton Blanchard 1 6.67% 1 50.00%
Total 15 100.00% 2 100.00%



static inline long extended_cede_processor(unsigned long latency_hint)
{
	long rc;
	u8 old_latency_hint = get_cede_latency_hint();

	set_cede_latency_hint(latency_hint);

	rc = cede_processor();
#ifdef CONFIG_TRACE_IRQFLAGS
		/* Ensure that H_CEDE returns with IRQs on */
		if (WARN_ON(!(mfmsr() & MSR_EE)))
			__hard_irq_enable();
#endif

	set_cede_latency_hint(old_latency_hint);

	return rc;
}

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Gautham R. Shenoy 38 63.33% 1 50.00%
Li Zhong 22 36.67% 1 50.00%
Total 60 100.00% 2 100.00%



static inline long vpa_call(unsigned long flags, unsigned long cpu,
		unsigned long vpa)
{
	flags = flags << H_VPA_FUNC_SHIFT;

	return plpar_hcall_norets(H_REGISTER_VPA, flags, cpu, vpa);
}

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Benjamin Herrenschmidt 22 59.46% 1 25.00%
Michael Ellerman 13 35.14% 1 25.00%
Anton Blanchard 1 2.70% 1 25.00%
Li Zhong 1 2.70% 1 25.00%
Total 37 100.00% 4 100.00%



static inline long unregister_vpa(unsigned long cpu)
{
	return vpa_call(H_VPA_DEREG_VPA, cpu, 0);
}

Contributors
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Michael Ellerman 19 90.48% 1 33.33%
Anton Blanchard 1 4.76% 1 33.33%
Li Zhong 1 4.76% 1 33.33%
Total 21 100.00% 3 100.00%



static inline long register_vpa(unsigned long cpu, unsigned long vpa)
{
	return vpa_call(H_VPA_REG_VPA, cpu, vpa);
}

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Michael Ellerman 19 76.00% 1 33.33%
Benjamin Herrenschmidt 5 20.00% 1 33.33%
Li Zhong 1 4.00% 1 33.33%
Total 25 100.00% 3 100.00%



static inline long unregister_slb_shadow(unsigned long cpu)
{
	return vpa_call(H_VPA_DEREG_SLB, cpu, 0);
}

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Michael Neuling 19 90.48% 1 33.33%
Li Zhong 1 4.76% 1 33.33%
Anton Blanchard 1 4.76% 1 33.33%
Total 21 100.00% 3 100.00%



static inline long register_slb_shadow(unsigned long cpu, unsigned long vpa)
{
	return vpa_call(H_VPA_REG_SLB, cpu, vpa);
}

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Michael Neuling 24 96.00% 1 50.00%
Li Zhong 1 4.00% 1 50.00%
Total 25 100.00% 2 100.00%



static inline long unregister_dtl(unsigned long cpu)
{
	return vpa_call(H_VPA_DEREG_DTL, cpu, 0);
}

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Jeremy Kerr 19 90.48% 1 33.33%
Li Zhong 1 4.76% 1 33.33%
Anton Blanchard 1 4.76% 1 33.33%
Total 21 100.00% 3 100.00%



static inline long register_dtl(unsigned long cpu, unsigned long vpa)
{
	return vpa_call(H_VPA_REG_DTL, cpu, vpa);
}

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Jeremy Kerr 24 96.00% 1 50.00%
Li Zhong 1 4.00% 1 50.00%
Total 25 100.00% 2 100.00%

extern void vpa_init(int cpu);



static inline long plpar_pte_enter(unsigned long flags,
		unsigned long hpte_group, unsigned long hpte_v,
		unsigned long hpte_r, unsigned long *slot)
{
	long rc;
	unsigned long retbuf[PLPAR_HCALL_BUFSIZE];

	rc = plpar_hcall(H_ENTER, retbuf, flags, hpte_group, hpte_v, hpte_r);

	*slot = retbuf[0];

	return rc;
}

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Anton Blanchard 66 100.00% 1 100.00%
Total 66 100.00% 1 100.00%



static inline long plpar_pte_remove(unsigned long flags, unsigned long ptex,
		unsigned long avpn, unsigned long *old_pteh_ret,
		unsigned long *old_ptel_ret)
{
	long rc;
	unsigned long retbuf[PLPAR_HCALL_BUFSIZE];

	rc = plpar_hcall(H_REMOVE, retbuf, flags, ptex, avpn);

	*old_pteh_ret = retbuf[0];
	*old_ptel_ret = retbuf[1];

	return rc;
}

Contributors
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Benjamin Herrenschmidt 44 60.27% 1 50.00%
Anton Blanchard 29 39.73% 1 50.00%
Total 73 100.00% 2 100.00%

/* plpar_pte_remove_raw can be called in real mode. It calls plpar_hcall_raw */


static inline long plpar_pte_remove_raw(unsigned long flags, unsigned long ptex,
		unsigned long avpn, unsigned long *old_pteh_ret,
		unsigned long *old_ptel_ret)
{
	long rc;
	unsigned long retbuf[PLPAR_HCALL_BUFSIZE];

	rc = plpar_hcall_raw(H_REMOVE, retbuf, flags, ptex, avpn);

	*old_pteh_ret = retbuf[0];
	*old_ptel_ret = retbuf[1];

	return rc;
}

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M. Mohan Kumar 73 100.00% 1 100.00%
Total 73 100.00% 1 100.00%



static inline long plpar_pte_read(unsigned long flags, unsigned long ptex,
		unsigned long *old_pteh_ret, unsigned long *old_ptel_ret)
{
	long rc;
	unsigned long retbuf[PLPAR_HCALL_BUFSIZE];

	rc = plpar_hcall(H_READ, retbuf, flags, ptex);

	*old_pteh_ret = retbuf[0];
	*old_ptel_ret = retbuf[1];

	return rc;
}

Contributors
Person Tokens Prop Commits CommitProp
Benjamin Herrenschmidt 38 56.72% 1 50.00%
Anton Blanchard 29 43.28% 1 50.00%
Total 67 100.00% 2 100.00%

/* plpar_pte_read_raw can be called in real mode. It calls plpar_hcall_raw */


static inline long plpar_pte_read_raw(unsigned long flags, unsigned long ptex,
		unsigned long *old_pteh_ret, unsigned long *old_ptel_ret)
{
	long rc;
	unsigned long retbuf[PLPAR_HCALL_BUFSIZE];

	rc = plpar_hcall_raw(H_READ, retbuf, flags, ptex);

	*old_pteh_ret = retbuf[0];
	*old_ptel_ret = retbuf[1];

	return rc;
}

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Sachin P. Sant 67 100.00% 1 100.00%
Total 67 100.00% 1 100.00%

/*
 * ptes must be 8*sizeof(unsigned long)
 */


static inline long plpar_pte_read_4(unsigned long flags, unsigned long ptex,
				    unsigned long *ptes)

{
	long rc;
	unsigned long retbuf[PLPAR_HCALL9_BUFSIZE];

	rc = plpar_hcall9(H_READ, retbuf, flags | H_READ_4, ptex);

	memcpy(ptes, retbuf, 8*sizeof(unsigned long));

	return rc;
}

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Aneesh Kumar K.V 63 100.00% 1 100.00%
Total 63 100.00% 1 100.00%

/*
 * plpar_pte_read_4_raw can be called in real mode.
 * ptes must be 8*sizeof(unsigned long)
 */


static inline long plpar_pte_read_4_raw(unsigned long flags, unsigned long ptex,
					unsigned long *ptes)

{
	long rc;
	unsigned long retbuf[PLPAR_HCALL9_BUFSIZE];

	rc = plpar_hcall9_raw(H_READ, retbuf, flags | H_READ_4, ptex);

	memcpy(ptes, retbuf, 8*sizeof(unsigned long));

	return rc;
}

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Michael Neuling 63 100.00% 1 100.00%
Total 63 100.00% 1 100.00%



static inline long plpar_pte_protect(unsigned long flags, unsigned long ptex,
		unsigned long avpn)
{
	return plpar_hcall_norets(H_PROTECT, flags, ptex, avpn);
}

Contributors
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Benjamin Herrenschmidt 31 100.00% 1 100.00%
Total 31 100.00% 1 100.00%



static inline long plpar_resize_hpt_prepare(unsigned long flags,
					    unsigned long shift)
{
	return plpar_hcall_norets(H_RESIZE_HPT_PREPARE, flags, shift);
}

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David Gibson 25 100.00% 1 100.00%
Total 25 100.00% 1 100.00%



static inline long plpar_resize_hpt_commit(unsigned long flags,
					   unsigned long shift)
{
	return plpar_hcall_norets(H_RESIZE_HPT_COMMIT, flags, shift);
}

Contributors
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David Gibson 25 100.00% 1 100.00%
Total 25 100.00% 1 100.00%



static inline long plpar_tce_get(unsigned long liobn, unsigned long ioba,
		unsigned long *tce_ret)
{
	long rc;
	unsigned long retbuf[PLPAR_HCALL_BUFSIZE];

	rc = plpar_hcall(H_GET_TCE, retbuf, liobn, ioba);

	*tce_ret = retbuf[0];

	return rc;
}

Contributors
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Benjamin Herrenschmidt 32 59.26% 1 50.00%
Anton Blanchard 22 40.74% 1 50.00%
Total 54 100.00% 2 100.00%



static inline long plpar_tce_put(unsigned long liobn, unsigned long ioba,
		unsigned long tceval)
{
	return plpar_hcall_norets(H_PUT_TCE, liobn, ioba, tceval);
}

Contributors
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Benjamin Herrenschmidt 31 100.00% 1 100.00%
Total 31 100.00% 1 100.00%



static inline long plpar_tce_put_indirect(unsigned long liobn,
		unsigned long ioba, unsigned long page, unsigned long count)
{
	return plpar_hcall_norets(H_PUT_TCE_INDIRECT, liobn, ioba, page, count);
}

Contributors
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Benjamin Herrenschmidt 37 100.00% 1 100.00%
Total 37 100.00% 1 100.00%



static inline long plpar_tce_stuff(unsigned long liobn, unsigned long ioba,
		unsigned long tceval, unsigned long count)
{
	return plpar_hcall_norets(H_STUFF_TCE, liobn, ioba, tceval, count);
}

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Benjamin Herrenschmidt 37 100.00% 1 100.00%
Total 37 100.00% 1 100.00%

/* Set various resource mode parameters */


static inline long plpar_set_mode(unsigned long mflags, unsigned long resource,
		unsigned long value1, unsigned long value2)
{
	return plpar_hcall_norets(H_SET_MODE, mflags, resource, value1, value2);
}

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Ian Munsie 37 100.00% 1 100.00%
Total 37 100.00% 1 100.00%

/*
 * Enable relocation on exceptions on this partition
 *
 * Note: this call has a partition wide scope and can take a while to complete.
 * If it returns H_LONG_BUSY_* it should be retried periodically until it
 * returns H_SUCCESS.
 */


static inline long enable_reloc_on_exceptions(void)
{
	/* mflags = 3: Exceptions at 0xC000000000004000 */
	return plpar_set_mode(3, H_SET_MODE_RESOURCE_ADDR_TRANS_MODE, 0, 0);
}

Contributors
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Ian Munsie 21 95.45% 1 50.00%
Michael Neuling 1 4.55% 1 50.00%
Total 22 100.00% 2 100.00%

/*
 * Disable relocation on exceptions on this partition
 *
 * Note: this call has a partition wide scope and can take a while to complete.
 * If it returns H_LONG_BUSY_* it should be retried periodically until it
 * returns H_SUCCESS.
 */


static inline long disable_reloc_on_exceptions(void) {
	return plpar_set_mode(0, H_SET_MODE_RESOURCE_ADDR_TRANS_MODE, 0, 0);
}

Contributors
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Ian Munsie 15 71.43% 1 33.33%
Anton Blanchard 5 23.81% 1 33.33%
Michael Neuling 1 4.76% 1 33.33%
Total 21 100.00% 3 100.00%

/*
 * Take exceptions in big endian mode on this partition
 *
 * Note: this call has a partition wide scope and can take a while to complete.
 * If it returns H_LONG_BUSY_* it should be retried periodically until it
 * returns H_SUCCESS.
 */


static inline long enable_big_endian_exceptions(void)
{
	/* mflags = 0: big endian exceptions */
	return plpar_set_mode(0, H_SET_MODE_RESOURCE_LE, 0, 0);
}

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Anton Blanchard 21 95.45% 1 50.00%
Michael Neuling 1 4.55% 1 50.00%
Total 22 100.00% 2 100.00%

/*
 * Take exceptions in little endian mode on this partition
 *
 * Note: this call has a partition wide scope and can take a while to complete.
 * If it returns H_LONG_BUSY_* it should be retried periodically until it
 * returns H_SUCCESS.
 */


static inline long enable_little_endian_exceptions(void)
{
	/* mflags = 1: little endian exceptions */
	return plpar_set_mode(1, H_SET_MODE_RESOURCE_LE, 0, 0);
}

Contributors
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Anton Blanchard 16 72.73% 1 33.33%
Ian Munsie 5 22.73% 1 33.33%
Michael Neuling 1 4.55% 1 33.33%
Total 22 100.00% 3 100.00%



static inline long plapr_set_ciabr(unsigned long ciabr)
{
	return plpar_set_mode(0, H_SET_MODE_RESOURCE_SET_CIABR, ciabr, 0);
}

Contributors
Person Tokens Prop Commits CommitProp
Ian Munsie 22 95.65% 1 50.00%
Michael Neuling 1 4.35% 1 50.00%
Total 23 100.00% 2 100.00%



static inline long plapr_set_watchpoint0(unsigned long dawr0, unsigned long dawrx0)
{
	return plpar_set_mode(0, H_SET_MODE_RESOURCE_SET_DAWR, dawr0, dawrx0);
}

Contributors
Person Tokens Prop Commits CommitProp
Ian Munsie 26 96.30% 1 50.00%
Michael Neuling 1 3.70% 1 50.00%
Total 27 100.00% 2 100.00%



static inline long plapr_signal_sys_reset(long cpu)
{
	return plpar_hcall_norets(H_SIGNAL_SYS_RESET, cpu);
}

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Nicholas Piggin 18 100.00% 1 100.00%
Total 18 100.00% 1 100.00%

#endif /* _ASM_POWERPC_PLPAR_WRAPPERS_H */
Overall Contributors
Person Tokens Prop Commits CommitProp
Benjamin Herrenschmidt 314 24.69% 1 3.70%
Anton Blanchard 203 15.96% 5 18.52%
Michael Neuling 142 11.16% 4 14.81%
Ian Munsie 129 10.14% 3 11.11%
M. Mohan Kumar 74 5.82% 1 3.70%
Gautham R. Shenoy 70 5.50% 1 3.70%
Sachin P. Sant 68 5.35% 1 3.70%
Aneesh Kumar K.V 64 5.03% 1 3.70%
Michael Ellerman 52 4.09% 1 3.70%
David Gibson 50 3.93% 1 3.70%
Jeremy Kerr 43 3.38% 1 3.70%
Li Zhong 32 2.52% 2 7.41%
Nicholas Piggin 18 1.42% 1 3.70%
Paul Gortmaker 6 0.47% 1 3.70%
Deepthi Dharwar 3 0.24% 1 3.70%
Brian King 3 0.24% 1 3.70%
Greg Kroah-Hartman 1 0.08% 1 3.70%
Total 1272 100.00% 27 100.00%
Directory: arch/powerpc/include/asm

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Anton Blanchard	1	6.67%	1	50.00%
Total	15	100.00%	2	100.00%
cregit-Linux how code gets into the kernel

Release 4.14 arch/powerpc/include/asm/plpar_wrappers.h

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