Commit 69c592ed authored by Benjamin Herrenschmidt's avatar Benjamin Herrenschmidt Committed by Michael Ellerman
Browse files

powerpc/opal: Add real mode call wrappers



Replace the old generic opal_call_realmode() with proper per-call
wrappers similar to the normal ones and convert callers.
Signed-off-by: default avatarBenjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: default avatarMichael Ellerman <mpe@ellerman.id.au>
parent b7d6bf4f
......@@ -166,7 +166,8 @@
#define OPAL_INT_SET_CPPR 123
#define OPAL_INT_EOI 124
#define OPAL_INT_SET_MFRR 125
#define OPAL_LAST 125
#define OPAL_PCI_TCE_KILL 126
#define OPAL_LAST 126
/* Device tree flags */
......@@ -919,6 +920,13 @@ enum {
OPAL_REBOOT_PLATFORM_ERROR = 1,
};
/* Argument to OPAL_PCI_TCE_KILL */
enum {
OPAL_PCI_TCE_KILL_PAGES,
OPAL_PCI_TCE_KILL_PE,
OPAL_PCI_TCE_KILL_ALL,
};
#endif /* __ASSEMBLY__ */
#endif /* __OPAL_API_H */
......@@ -222,6 +222,12 @@ int64_t opal_int_get_xirr(uint32_t *out_xirr, bool just_poll);
int64_t opal_int_set_cppr(uint8_t cppr);
int64_t opal_int_eoi(uint32_t xirr);
int64_t opal_int_set_mfrr(uint32_t cpu, uint8_t mfrr);
int64_t opal_pci_tce_kill(uint64_t phb_id, uint32_t kill_type,
uint32_t pe_num, uint32_t tce_size,
uint64_t dma_addr, uint32_t npages);
int64_t opal_rm_pci_tce_kill(uint64_t phb_id, uint32_t kill_type,
uint32_t pe_num, uint32_t tce_size,
uint64_t dma_addr, uint32_t npages);
/* Internal functions */
extern int early_init_dt_scan_opal(unsigned long node, const char *uname,
......
......@@ -245,8 +245,7 @@ fastsleep_workaround_at_entry:
/* Fast sleep workaround */
li r3,1
li r4,1
li r0,OPAL_CONFIG_CPU_IDLE_STATE
bl opal_call_realmode
bl opal_rm_config_cpu_idle_state
/* Clear Lock bit */
li r0,0
......@@ -337,8 +336,7 @@ ALT_FTR_SECTION_END_NESTED_IFSET(CPU_FTR_ARCH_207S, 66); \
ld r2,PACATOC(r13); \
ld r1,PACAR1(r13); \
std r3,ORIG_GPR3(r1); /* Save original r3 */ \
li r0,OPAL_HANDLE_HMI; /* Pass opal token argument*/ \
bl opal_call_realmode; \
bl opal_rm_handle_hmi; \
ld r3,ORIG_GPR3(r1); /* Restore original r3 */ \
20: nop;
......@@ -430,7 +428,7 @@ _GLOBAL(pnv_wakeup_tb_loss)
* until they are restored, they are free to be used.
*
* Save SRR1 and LR in NVGPRs as they might be clobbered in
* opal_call_realmode (called in CHECK_HMI_INTERRUPT). SRR1 is required
* opal_call() (called in CHECK_HMI_INTERRUPT). SRR1 is required
* to determine the wakeup reason if we branch to kvm_start_guest. LR
* is required to return back to reset vector after hypervisor state
* restore is complete.
......@@ -530,10 +528,7 @@ timebase_resync:
*/
ble cr3,clear_lock
/* Time base re-sync */
li r0,OPAL_RESYNC_TIMEBASE
bl opal_call_realmode;
/* TODO: Check r3 for failure */
bl opal_rm_resync_timebase;
/*
* If waking up from sleep, per core state is not lost, skip to
* clear_lock.
......@@ -622,8 +617,7 @@ hypervisor_state_restored:
fastsleep_workaround_at_exit:
li r3,1
li r4,0
li r0,OPAL_CONFIG_CPU_IDLE_STATE
bl opal_call_realmode
bl opal_rm_config_cpu_idle_state
b timebase_resync
/*
......
......@@ -59,7 +59,7 @@ END_FTR_SECTION(0, 1); \
#define OPAL_CALL(name, token) \
_GLOBAL_TOC(name); \
mflr r0; \
std r0,16(r1); \
std r0,PPC_LR_STKOFF(r1); \
li r0,token; \
OPAL_BRANCH(opal_tracepoint_entry) \
mfcr r12; \
......@@ -92,7 +92,7 @@ opal_return:
FIXUP_ENDIAN
ld r2,PACATOC(r13);
lwz r4,8(r1);
ld r5,16(r1);
ld r5,PPC_LR_STKOFF(r1);
ld r6,PACASAVEDMSR(r13);
mtspr SPRN_SRR0,r5;
mtspr SPRN_SRR1,r6;
......@@ -157,43 +157,37 @@ opal_tracepoint_return:
blr
#endif
/*
* Make opal call in realmode. This is a generic function to be called
* from realmode. It handles endianness.
*
* r13 - paca pointer
* r1 - stack pointer
* r0 - opal token
*/
_GLOBAL(opal_call_realmode)
mflr r12
std r12,PPC_LR_STKOFF(r1)
ld r2,PACATOC(r13)
/* Set opal return address */
LOAD_REG_ADDR(r12,return_from_opal_call)
mtlr r12
mfmsr r12
#ifdef __LITTLE_ENDIAN__
/* Handle endian-ness */
li r11,MSR_LE
andc r12,r12,r11
#endif
mtspr SPRN_HSRR1,r12
LOAD_REG_ADDR(r11,opal)
ld r12,8(r11)
ld r2,0(r11)
mtspr SPRN_HSRR0,r12
#define OPAL_CALL_REAL(name, token) \
_GLOBAL_TOC(name); \
mflr r0; \
std r0,PPC_LR_STKOFF(r1); \
li r0,token; \
mfcr r12; \
stw r12,8(r1); \
\
/* Set opal return address */ \
LOAD_REG_ADDR(r11, opal_return_realmode); \
mtlr r11; \
mfmsr r12; \
li r11,MSR_LE; \
andc r12,r12,r11; \
mtspr SPRN_HSRR1,r12; \
LOAD_REG_ADDR(r11,opal); \
ld r12,8(r11); \
ld r2,0(r11); \
mtspr SPRN_HSRR0,r12; \
hrfid
return_from_opal_call:
#ifdef __LITTLE_ENDIAN__
opal_return_realmode:
FIXUP_ENDIAN
#endif
ld r2,PACATOC(r13);
lwz r11,8(r1);
ld r12,PPC_LR_STKOFF(r1)
mtcr r11;
mtlr r12
blr
OPAL_CALL(opal_invalid_call, OPAL_INVALID_CALL);
OPAL_CALL(opal_console_write, OPAL_CONSOLE_WRITE);
OPAL_CALL(opal_console_read, OPAL_CONSOLE_READ);
......@@ -271,6 +265,7 @@ OPAL_CALL(opal_validate_flash, OPAL_FLASH_VALIDATE);
OPAL_CALL(opal_manage_flash, OPAL_FLASH_MANAGE);
OPAL_CALL(opal_update_flash, OPAL_FLASH_UPDATE);
OPAL_CALL(opal_resync_timebase, OPAL_RESYNC_TIMEBASE);
OPAL_CALL_REAL(opal_rm_resync_timebase, OPAL_RESYNC_TIMEBASE);
OPAL_CALL(opal_check_token, OPAL_CHECK_TOKEN);
OPAL_CALL(opal_dump_init, OPAL_DUMP_INIT);
OPAL_CALL(opal_dump_info, OPAL_DUMP_INFO);
......@@ -286,7 +281,9 @@ OPAL_CALL(opal_sensor_read, OPAL_SENSOR_READ);
OPAL_CALL(opal_get_param, OPAL_GET_PARAM);
OPAL_CALL(opal_set_param, OPAL_SET_PARAM);
OPAL_CALL(opal_handle_hmi, OPAL_HANDLE_HMI);
OPAL_CALL_REAL(opal_rm_handle_hmi, OPAL_HANDLE_HMI);
OPAL_CALL(opal_config_cpu_idle_state, OPAL_CONFIG_CPU_IDLE_STATE);
OPAL_CALL_REAL(opal_rm_config_cpu_idle_state, OPAL_CONFIG_CPU_IDLE_STATE);
OPAL_CALL(opal_slw_set_reg, OPAL_SLW_SET_REG);
OPAL_CALL(opal_register_dump_region, OPAL_REGISTER_DUMP_REGION);
OPAL_CALL(opal_unregister_dump_region, OPAL_UNREGISTER_DUMP_REGION);
......@@ -311,3 +308,5 @@ OPAL_CALL(opal_int_get_xirr, OPAL_INT_GET_XIRR);
OPAL_CALL(opal_int_set_cppr, OPAL_INT_SET_CPPR);
OPAL_CALL(opal_int_eoi, OPAL_INT_EOI);
OPAL_CALL(opal_int_set_mfrr, OPAL_INT_SET_MFRR);
OPAL_CALL(opal_pci_tce_kill, OPAL_PCI_TCE_KILL);
OPAL_CALL_REAL(opal_rm_pci_tce_kill, OPAL_PCI_TCE_KILL);
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