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#ifndef _PSERIES_PLPAR_WRAPPERS_H
#define _PSERIES_PLPAR_WRAPPERS_H
#include <linux/string.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);
}
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)
{
return vpa_call(0x5, cpu, 0);
}
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)
{
return vpa_call(0x7, cpu, 0);
}
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)
{
return vpa_call(0x6, cpu, 0);
}
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;
}
/*
* 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;
}
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]);
}
#endif /* _PSERIES_PLPAR_WRAPPERS_H */
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