| #ifndef _PSERIES_PLPAR_WRAPPERS_H |
| #define _PSERIES_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); |
| } |
| |
| static inline u8 get_cede_latency_hint(void) |
| { |
| return get_lppaca()->cede_latency_hint; |
| } |
| |
| static inline void set_cede_latency_hint(u8 latency_hint) |
| { |
| get_lppaca()->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(); |
| #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; |
| } |
| |
| 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); |
| } |
| |
| static inline long unregister_vpa(unsigned long cpu) |
| { |
| return vpa_call(H_VPA_DEREG_VPA, cpu, 0); |
| } |
| |
| static inline long register_vpa(unsigned long cpu, unsigned long vpa) |
| { |
| return vpa_call(H_VPA_REG_VPA, cpu, vpa); |
| } |
| |
| static inline long unregister_slb_shadow(unsigned long cpu) |
| { |
| return vpa_call(H_VPA_DEREG_SLB, cpu, 0); |
| } |
| |
| static inline long register_slb_shadow(unsigned long cpu, unsigned long vpa) |
| { |
| return vpa_call(H_VPA_REG_SLB, cpu, vpa); |
| } |
| |
| static inline long unregister_dtl(unsigned long cpu) |
| { |
| return vpa_call(H_VPA_DEREG_DTL, cpu, 0); |
| } |
| |
| static inline long register_dtl(unsigned long cpu, unsigned long vpa) |
| { |
| return vpa_call(H_VPA_REG_DTL, 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]); |
| } |
| |
| /* 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); |
| } |
| |
| /* |
| * 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, 3, 0, 0); |
| } |
| |
| /* |
| * 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, 3, 0, 0); |
| } |
| |
| static inline long plapr_set_ciabr(unsigned long ciabr) |
| { |
| return plpar_set_mode(0, 1, ciabr, 0); |
| } |
| |
| static inline long plapr_set_watchpoint0(unsigned long dawr0, unsigned long dawrx0) |
| { |
| return plpar_set_mode(0, 2, dawr0, dawrx0); |
| } |
| |
| #endif /* _PSERIES_PLPAR_WRAPPERS_H */ |