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head/sys/powerpc/pseries/mmu_phyp.c
| Show First 20 Lines • Show All 53 Lines • ▼ Show 20 Lines | |||||
| #include <powerpc/aim/mmu_oea64.h> | #include <powerpc/aim/mmu_oea64.h> | ||||
| #include "mmu_if.h" | #include "mmu_if.h" | ||||
| #include "moea64_if.h" | #include "moea64_if.h" | ||||
| #include "phyp-hvcall.h" | #include "phyp-hvcall.h" | ||||
| #define MMU_PHYP_DEBUG 0 | |||||
| #define MMU_PHYP_ID "mmu_phyp: " | |||||
| #if MMU_PHYP_DEBUG | |||||
| #define dprintf(fmt, ...) printf(fmt, ## __VA_ARGS__) | |||||
| #define dprintf0(fmt, ...) dprintf(MMU_PHYP_ID fmt, ## __VA_ARGS__) | |||||
| #else | |||||
| #define dprintf(fmt, args...) do { ; } while(0) | |||||
| #define dprintf0(fmt, args...) do { ; } while(0) | |||||
| #endif | |||||
| static struct rmlock mphyp_eviction_lock; | static struct rmlock mphyp_eviction_lock; | ||||
| /* | /* | ||||
| * Kernel MMU interface | * Kernel MMU interface | ||||
| */ | */ | ||||
| static void mphyp_bootstrap(mmu_t mmup, vm_offset_t kernelstart, | static void mphyp_bootstrap(mmu_t mmup, vm_offset_t kernelstart, | ||||
| vm_offset_t kernelend); | vm_offset_t kernelend); | ||||
| ▲ Show 20 Lines • Show All 74 Lines • ▼ Show 20 Lines | mphyp_bootstrap(mmu_t mmup, vm_offset_t kernelstart, vm_offset_t kernelend) | ||||
| res = OF_getencprop(node, "ibm,pft-size", prop, sizeof(prop)); | res = OF_getencprop(node, "ibm,pft-size", prop, sizeof(prop)); | ||||
| if (res <= 0) | if (res <= 0) | ||||
| panic("mmu_phyp: unknown PFT size"); | panic("mmu_phyp: unknown PFT size"); | ||||
| final_pteg_count = 1 << prop[1]; | final_pteg_count = 1 << prop[1]; | ||||
| res = OF_getencprop(node, "ibm,slb-size", prop, sizeof(prop[0])); | res = OF_getencprop(node, "ibm,slb-size", prop, sizeof(prop[0])); | ||||
| if (res > 0) | if (res > 0) | ||||
| n_slbs = prop[0]; | n_slbs = prop[0]; | ||||
| dprintf0("slb-size=%i\n", n_slbs); | |||||
| moea64_pteg_count = final_pteg_count / sizeof(struct lpteg); | moea64_pteg_count = final_pteg_count / sizeof(struct lpteg); | ||||
| /* Clear any old page table entries */ | /* Clear any old page table entries */ | ||||
| for (idx = 0; idx < moea64_pteg_count*8; idx++) { | for (idx = 0; idx < moea64_pteg_count*8; idx++) { | ||||
| phyp_pft_hcall(H_READ, 0, idx, 0, 0, &old.pte_hi, | phyp_pft_hcall(H_READ, 0, idx, 0, 0, &old.pte_hi, | ||||
| &old.pte_lo, &old.pte_lo); | &old.pte_lo, &old.pte_lo); | ||||
| vsid = (old.pte_hi << (ADDR_API_SHFT64 - ADDR_PIDX_SHFT)) >> 28; | vsid = (old.pte_hi << (ADDR_API_SHFT64 - ADDR_PIDX_SHFT)) >> 28; | ||||
| Show All 20 Lines | if (len > 0) { | ||||
| res = OF_getencprop(node, "ibm,segment-page-sizes", arr, | res = OF_getencprop(node, "ibm,segment-page-sizes", arr, | ||||
| sizeof(arr)); | sizeof(arr)); | ||||
| len /= 4; | len /= 4; | ||||
| idx = 0; | idx = 0; | ||||
| while (len > 0) { | while (len > 0) { | ||||
| shift = arr[idx]; | shift = arr[idx]; | ||||
| slb_encoding = arr[idx + 1]; | slb_encoding = arr[idx + 1]; | ||||
| nptlp = arr[idx + 2]; | nptlp = arr[idx + 2]; | ||||
| dprintf0("Segment Page Size: " | |||||
| "%uKB, slb_enc=0x%X: {size, encoding}[%u] =", | |||||
| shift > 10? 1 << (shift-10) : 0, | |||||
| slb_encoding, nptlp); | |||||
| idx += 3; | idx += 3; | ||||
| len -= 3; | len -= 3; | ||||
| while (len > 0 && nptlp) { | while (len > 0 && nptlp) { | ||||
| lp_size = arr[idx]; | lp_size = arr[idx]; | ||||
| lp_encoding = arr[idx+1]; | lp_encoding = arr[idx+1]; | ||||
| dprintf(" {%uKB, 0x%X}", | |||||
| lp_size > 10? 1 << (lp_size-10) : 0, | |||||
| lp_encoding); | |||||
| if (slb_encoding == SLBV_L && lp_encoding == 0) | if (slb_encoding == SLBV_L && lp_encoding == 0) | ||||
| break; | break; | ||||
| idx += 2; | idx += 2; | ||||
| len -= 2; | len -= 2; | ||||
| nptlp--; | nptlp--; | ||||
| } | } | ||||
| dprintf("\n"); | |||||
| if (nptlp && slb_encoding == SLBV_L && lp_encoding == 0) | if (nptlp && slb_encoding == SLBV_L && lp_encoding == 0) | ||||
| break; | break; | ||||
| } | } | ||||
| if (len == 0) | if (len > 0) { | ||||
| panic("Standard large pages (SLB[L] = 1, PTE[LP] = 0) " | |||||
| "not supported by this system. Please enable huge " | |||||
| "page backing if running under PowerKVM."); | |||||
| moea64_large_page_shift = shift; | moea64_large_page_shift = shift; | ||||
| moea64_large_page_size = 1ULL << lp_size; | moea64_large_page_size = 1ULL << lp_size; | ||||
| moea64_large_page_mask = moea64_large_page_size - 1; | |||||
| hw_direct_map = 1; | |||||
| printf(MMU_PHYP_ID | |||||
| "Support for hugepages of %uKB detected\n", | |||||
| moea64_large_page_shift > 10? | |||||
| 1 << (moea64_large_page_shift-10) : 0); | |||||
| } else { | |||||
| moea64_large_page_size = 0; | |||||
| moea64_large_page_shift = 0; | |||||
| moea64_large_page_mask = 0; | |||||
| hw_direct_map = 0; | |||||
| printf(MMU_PHYP_ID | |||||
| "Support for hugepages not found\n"); | |||||
| } | |||||
| } | } | ||||
| moea64_mid_bootstrap(mmup, kernelstart, kernelend); | moea64_mid_bootstrap(mmup, kernelstart, kernelend); | ||||
| moea64_late_bootstrap(mmup, kernelstart, kernelend); | moea64_late_bootstrap(mmup, kernelstart, kernelend); | ||||
| /* Test for broken versions of KVM that don't conform to the spec */ | /* Test for broken versions of KVM that don't conform to the spec */ | ||||
| if (phyp_hcall(H_CLEAR_MOD, 0, 0) == H_FUNCTION) | if (phyp_hcall(H_CLEAR_MOD, 0, 0) == H_FUNCTION) | ||||
| brokenkvm = 1; | brokenkvm = 1; | ||||
| ▲ Show 20 Lines • Show All 256 Lines • Show Last 20 Lines | |||||