[deliverable/linux.git] / arch / powerpc / platforms / pseries / plpar_wrappers.h

#ifndef _PSERIES_PLPAR_WRAPPERS_H
#define _PSERIES_PLPAR_WRAPPERS_H

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

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

static inline u8 get_cede_latency_hint(void)
{
	return get_lppaca()->gpr5_dword.fields.cede_latency_hint;
}

static inline void set_cede_latency_hint(u8 latency_hint)
{
	get_lppaca()->gpr5_dword.fields.cede_latency_hint = latency_hint;
}

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

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();
	set_cede_latency_hint(old_latency_hint);

	return rc;
}

static inline long vpa_call(unsigned long flags, unsigned long cpu,
		unsigned long vpa)
{
	/* flags are in bits 16-18 (counting from most significant bit) */
	flags = flags << (63 - 18);

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

static inline long unregister_vpa(unsigned long cpu, unsigned long vpa)
{
	return vpa_call(0x5, cpu, vpa);
}

static inline long register_vpa(unsigned long cpu, unsigned long vpa)
{
	return vpa_call(0x1, cpu, vpa);
}

static inline long unregister_slb_shadow(unsigned long cpu, unsigned long vpa)
{
	return vpa_call(0x7, cpu, vpa);
}

static inline long register_slb_shadow(unsigned long cpu, unsigned long vpa)
{
	return vpa_call(0x3, cpu, vpa);
}

static inline long unregister_dtl(unsigned long cpu, unsigned long vpa)
{
	return vpa_call(0x6, cpu, vpa);
}

static inline long register_dtl(unsigned long cpu, unsigned long vpa)
{
	return vpa_call(0x2, cpu, vpa);
}

static inline long plpar_page_set_loaned(unsigned long vpa)
{
	unsigned long cmo_page_sz = cmo_get_page_size();
	long rc = 0;
	int i;

	for (i = 0; !rc && i < PAGE_SIZE; i += cmo_page_sz)
		rc = plpar_hcall_norets(H_PAGE_INIT, H_PAGE_SET_LOANED, vpa + i, 0);

	for (i -= cmo_page_sz; rc && i != 0; i -= cmo_page_sz)
		plpar_hcall_norets(H_PAGE_INIT, H_PAGE_SET_ACTIVE,
				   vpa + i - cmo_page_sz, 0);

	return rc;
}

static inline long plpar_page_set_active(unsigned long vpa)
{
	unsigned long cmo_page_sz = cmo_get_page_size();
	long rc = 0;
	int i;

	for (i = 0; !rc && i < PAGE_SIZE; i += cmo_page_sz)
		rc = plpar_hcall_norets(H_PAGE_INIT, H_PAGE_SET_ACTIVE, vpa + i, 0);

	for (i -= cmo_page_sz; rc && i != 0; i -= cmo_page_sz)
		plpar_hcall_norets(H_PAGE_INIT, H_PAGE_SET_LOANED,
				   vpa + i - cmo_page_sz, 0);

	return rc;
}

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;
}

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;
}

/* 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;
}

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;
}

/* 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;
}

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

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;
}

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);
}

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);
}

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);
}

static inline long plpar_get_term_char(unsigned long termno,
		unsigned long *len_ret, char *buf_ret)
{
	long rc;
	unsigned long retbuf[PLPAR_HCALL_BUFSIZE];
	unsigned long *lbuf = (unsigned long *)buf_ret;	/* TODO: alignment? */

	rc = plpar_hcall(H_GET_TERM_CHAR, retbuf, termno);

	*len_ret = retbuf[0];
	lbuf[0] = retbuf[1];
	lbuf[1] = retbuf[2];

	return rc;
}

static inline long plpar_put_term_char(unsigned long termno, unsigned long len,
		const char *buffer)
{
	unsigned long *lbuf = (unsigned long *)buffer;	/* TODO: alignment? */
	return plpar_hcall_norets(H_PUT_TERM_CHAR, termno, len, lbuf[0],
			lbuf[1]);
}

static inline long plpar_eoi(unsigned long xirr)
{
	return plpar_hcall_norets(H_EOI, xirr);
}

static inline long plpar_cppr(unsigned long cppr)
{
	return plpar_hcall_norets(H_CPPR, cppr);
}

static inline long plpar_ipi(unsigned long servernum, unsigned long mfrr)
{
	return plpar_hcall_norets(H_IPI, servernum, mfrr);
}

static inline long plpar_xirr(unsigned long *xirr_ret)
{
	long rc;
	unsigned long retbuf[PLPAR_HCALL_BUFSIZE];

	rc = plpar_hcall(H_XIRR, retbuf);

	*xirr_ret = retbuf[0];

	return rc;
}

#endif /* _PSERIES_PLPAR_WRAPPERS_H */
Commit	Line	Data
a1218720 ME	1	#ifndef _PSERIES_PLPAR_WRAPPERS_H
	2	#define _PSERIES_PLPAR_WRAPPERS_H
	3
	4	#include <asm/hvcall.h>
370e4587	5	#include <asm/page.h>
a1218720 ME	6
	7	static inline long poll_pending(void)
	8	{
b9377ffc	9	return plpar_hcall_norets(H_POLL_PENDING);
a1218720 ME	10	}
a1218720 ME	11
69ddb57c GS	12	static inline u8 get_cede_latency_hint(void)
	13	{
	14	return get_lppaca()->gpr5_dword.fields.cede_latency_hint;
	15	}
	16
	17	static inline void set_cede_latency_hint(u8 latency_hint)
	18	{
	19	get_lppaca()->gpr5_dword.fields.cede_latency_hint = latency_hint;
	20	}
	21
a1218720 ME	22	static inline long cede_processor(void)
a1218720 ME	23	{
b9377ffc	24	return plpar_hcall_norets(H_CEDE);
a1218720 ME	25	}
a1218720 ME	26
69ddb57c GS	27	static inline long extended_cede_processor(unsigned long latency_hint)
	28	{
	29	long rc;
	30	u8 old_latency_hint = get_cede_latency_hint();
	31
	32	set_cede_latency_hint(latency_hint);
	33	rc = cede_processor();
	34	set_cede_latency_hint(old_latency_hint);
	35
	36	return rc;
	37	}
	38
40765d2b	39	static inline long vpa_call(unsigned long flags, unsigned long cpu,
a1218720 ME	40	unsigned long vpa)
a1218720 ME	41	{
40765d2b ME	42	/* flags are in bits 16-18 (counting from most significant bit) */
	43	flags = flags << (63 - 18);
	44
	45	return plpar_hcall_norets(H_REGISTER_VPA, flags, cpu, vpa);
	46	}
	47
	48	static inline long unregister_vpa(unsigned long cpu, unsigned long vpa)
	49	{
	50	return vpa_call(0x5, cpu, vpa);
	51	}
	52
	53	static inline long register_vpa(unsigned long cpu, unsigned long vpa)
	54	{
	55	return vpa_call(0x1, cpu, vpa);
a1218720 ME	56	}
a1218720 ME	57
2f6093c8 MN	58	static inline long unregister_slb_shadow(unsigned long cpu, unsigned long vpa)
	59	{
	60	return vpa_call(0x7, cpu, vpa);
	61	}
	62
	63	static inline long register_slb_shadow(unsigned long cpu, unsigned long vpa)
	64	{
	65	return vpa_call(0x3, cpu, vpa);
	66	}
	67
fc59a3fc JK	68	static inline long unregister_dtl(unsigned long cpu, unsigned long vpa)
	69	{
	70	return vpa_call(0x6, cpu, vpa);
	71	}
	72
	73	static inline long register_dtl(unsigned long cpu, unsigned long vpa)
	74	{
	75	return vpa_call(0x2, cpu, vpa);
	76	}
	77
86630a32 BK	78	static inline long plpar_page_set_loaned(unsigned long vpa)
86630a32 BK	79	{
370e4587 BK	80	unsigned long cmo_page_sz = cmo_get_page_size();
	81	long rc = 0;
	82	int i;
	83
	84	for (i = 0; !rc && i < PAGE_SIZE; i += cmo_page_sz)
	85	rc = plpar_hcall_norets(H_PAGE_INIT, H_PAGE_SET_LOANED, vpa + i, 0);
	86
	87	for (i -= cmo_page_sz; rc && i != 0; i -= cmo_page_sz)
	88	plpar_hcall_norets(H_PAGE_INIT, H_PAGE_SET_ACTIVE,
	89	vpa + i - cmo_page_sz, 0);
	90
	91	return rc;
86630a32 BK	92	}
	93
	94	static inline long plpar_page_set_active(unsigned long vpa)
	95	{
370e4587 BK	96	unsigned long cmo_page_sz = cmo_get_page_size();
	97	long rc = 0;
	98	int i;
	99
	100	for (i = 0; !rc && i < PAGE_SIZE; i += cmo_page_sz)
	101	rc = plpar_hcall_norets(H_PAGE_INIT, H_PAGE_SET_ACTIVE, vpa + i, 0);
	102
	103	for (i -= cmo_page_sz; rc && i != 0; i -= cmo_page_sz)
	104	plpar_hcall_norets(H_PAGE_INIT, H_PAGE_SET_LOANED,
	105	vpa + i - cmo_page_sz, 0);
	106
	107	return rc;
86630a32 BK	108	}
86630a32 BK	109
40765d2b	110	extern void vpa_init(int cpu);
a1218720	111
b9377ffc AB	112	static inline long plpar_pte_enter(unsigned long flags,
	113	unsigned long hpte_group, unsigned long hpte_v,
	114	unsigned long hpte_r, unsigned long *slot)
	115	{
	116	long rc;
	117	unsigned long retbuf[PLPAR_HCALL_BUFSIZE];
	118
	119	rc = plpar_hcall(H_ENTER, retbuf, flags, hpte_group, hpte_v, hpte_r);
	120
	121	*slot = retbuf[0];
	122
	123	return rc;
	124	}
	125
a1218720 ME	126	static inline long plpar_pte_remove(unsigned long flags, unsigned long ptex,
	127	unsigned long avpn, unsigned long *old_pteh_ret,
	128	unsigned long *old_ptel_ret)
	129	{
b9377ffc AB	130	long rc;
	131	unsigned long retbuf[PLPAR_HCALL_BUFSIZE];
	132
	133	rc = plpar_hcall(H_REMOVE, retbuf, flags, ptex, avpn);
	134
	135	*old_pteh_ret = retbuf[0];
	136	*old_ptel_ret = retbuf[1];
	137
	138	return rc;
a1218720 ME	139	}
a1218720 ME	140
b4aea36b MK	141	/* plpar_pte_remove_raw can be called in real mode. It calls plpar_hcall_raw */
	142	static inline long plpar_pte_remove_raw(unsigned long flags, unsigned long ptex,
	143	unsigned long avpn, unsigned long *old_pteh_ret,
	144	unsigned long *old_ptel_ret)
	145	{
	146	long rc;
	147	unsigned long retbuf[PLPAR_HCALL_BUFSIZE];
	148
	149	rc = plpar_hcall_raw(H_REMOVE, retbuf, flags, ptex, avpn);
	150
	151	*old_pteh_ret = retbuf[0];
	152	*old_ptel_ret = retbuf[1];
	153
	154	return rc;
	155	}
	156
a1218720 ME	157	static inline long plpar_pte_read(unsigned long flags, unsigned long ptex,
	158	unsigned long old_pteh_ret, unsigned long old_ptel_ret)
	159	{
b9377ffc AB	160	long rc;
	161	unsigned long retbuf[PLPAR_HCALL_BUFSIZE];
	162
	163	rc = plpar_hcall(H_READ, retbuf, flags, ptex);
	164
	165	*old_pteh_ret = retbuf[0];
	166	*old_ptel_ret = retbuf[1];
	167
	168	return rc;
a1218720 ME	169	}
a1218720 ME	170
b7abc5c5 SS	171	/* plpar_pte_read_raw can be called in real mode. It calls plpar_hcall_raw */
	172	static inline long plpar_pte_read_raw(unsigned long flags, unsigned long ptex,
	173	unsigned long old_pteh_ret, unsigned long old_ptel_ret)
	174	{
	175	long rc;
	176	unsigned long retbuf[PLPAR_HCALL_BUFSIZE];
	177
	178	rc = plpar_hcall_raw(H_READ, retbuf, flags, ptex);
	179
	180	*old_pteh_ret = retbuf[0];
	181	*old_ptel_ret = retbuf[1];
	182
	183	return rc;
	184	}
	185
a1218720 ME	186	static inline long plpar_pte_protect(unsigned long flags, unsigned long ptex,
	187	unsigned long avpn)
	188	{
	189	return plpar_hcall_norets(H_PROTECT, flags, ptex, avpn);
	190	}
	191
	192	static inline long plpar_tce_get(unsigned long liobn, unsigned long ioba,
	193	unsigned long *tce_ret)
	194	{
b9377ffc AB	195	long rc;
	196	unsigned long retbuf[PLPAR_HCALL_BUFSIZE];
	197
	198	rc = plpar_hcall(H_GET_TCE, retbuf, liobn, ioba);
	199
	200	*tce_ret = retbuf[0];
	201
	202	return rc;
a1218720 ME	203	}
	204
	205	static inline long plpar_tce_put(unsigned long liobn, unsigned long ioba,
	206	unsigned long tceval)
	207	{
	208	return plpar_hcall_norets(H_PUT_TCE, liobn, ioba, tceval);
	209	}
	210
	211	static inline long plpar_tce_put_indirect(unsigned long liobn,
	212	unsigned long ioba, unsigned long page, unsigned long count)
	213	{
	214	return plpar_hcall_norets(H_PUT_TCE_INDIRECT, liobn, ioba, page, count);
	215	}
	216
	217	static inline long plpar_tce_stuff(unsigned long liobn, unsigned long ioba,
	218	unsigned long tceval, unsigned long count)
	219	{
	220	return plpar_hcall_norets(H_STUFF_TCE, liobn, ioba, tceval, count);
	221	}
	222
	223	static inline long plpar_get_term_char(unsigned long termno,
	224	unsigned long len_ret, char buf_ret)
	225	{
b9377ffc AB	226	long rc;
b9377ffc AB	227	unsigned long retbuf[PLPAR_HCALL_BUFSIZE];
a1218720	228	unsigned long lbuf = (unsigned long )buf_ret; /* TODO: alignment? */
b9377ffc AB	229
	230	rc = plpar_hcall(H_GET_TERM_CHAR, retbuf, termno);
	231
	232	*len_ret = retbuf[0];
	233	lbuf[0] = retbuf[1];
	234	lbuf[1] = retbuf[2];
	235
	236	return rc;
a1218720 ME	237	}
	238
	239	static inline long plpar_put_term_char(unsigned long termno, unsigned long len,
	240	const char *buffer)
	241	{
	242	unsigned long lbuf = (unsigned long )buffer; /* TODO: alignment? */
	243	return plpar_hcall_norets(H_PUT_TERM_CHAR, termno, len, lbuf[0],
	244	lbuf[1]);
	245	}
	246
b9377ffc AB	247	static inline long plpar_eoi(unsigned long xirr)
	248	{
	249	return plpar_hcall_norets(H_EOI, xirr);
	250	}
	251
	252	static inline long plpar_cppr(unsigned long cppr)
	253	{
	254	return plpar_hcall_norets(H_CPPR, cppr);
	255	}
	256
	257	static inline long plpar_ipi(unsigned long servernum, unsigned long mfrr)
	258	{
	259	return plpar_hcall_norets(H_IPI, servernum, mfrr);
	260	}
	261
	262	static inline long plpar_xirr(unsigned long *xirr_ret)
	263	{
	264	long rc;
	265	unsigned long retbuf[PLPAR_HCALL_BUFSIZE];
	266
	267	rc = plpar_hcall(H_XIRR, retbuf);
	268
	269	*xirr_ret = retbuf[0];
	270
	271	return rc;
	272	}
	273
a1218720	274	#endif /* _PSERIES_PLPAR_WRAPPERS_H */