4a35efc720
the TLBs in order to get rid of the user mappings but instead traverse
them an flush only the latter like we also do for the Spitfire-class.
Also flushing the unlocked kernel entries can cause instant faults which
when called from within cpu_switch() are handled with the scheduler lock
held which in turn can cause timeouts on the acquisition of the lock by
other CPUs. This was easily seen with a 16-core V890 but occasionally
also happened with 2-way machines.
While at it, move the SPARC64-V support code entirely to zeus.c. This
causes a little bit of duplication but is less confusing than partially
using Cheetah-class bits for these.
- For SPARC64-V ensure that 4-Mbyte page entries are stored in the 1024-
entry, 2-way set associative TLB.
- In {d,i}tlb_get_data_sun4u() turn off the interrupts in order to ensure
that ASI_{D,I}TLB_DATA_ACCESS_REG actually are read twice back-to-back.
Tested by: Peter Jeremy (16-core US-IV), Michael Moll (2-way SPARC64-V)
176 lines
6.5 KiB
C
176 lines
6.5 KiB
C
/*-
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* Copyright (c) 2001 Jake Burkholder.
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* Copyright (c) 2008, 2010 Marius Strobl <marius@FreeBSD.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#ifndef _MACHINE_TLB_H_
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#define _MACHINE_TLB_H_
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#define TLB_DIRECT_ADDRESS_BITS (43)
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#define TLB_DIRECT_PAGE_BITS (PAGE_SHIFT_4M)
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#define TLB_DIRECT_ADDRESS_MASK ((1UL << TLB_DIRECT_ADDRESS_BITS) - 1)
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#define TLB_DIRECT_PAGE_MASK ((1UL << TLB_DIRECT_PAGE_BITS) - 1)
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#define TLB_PHYS_TO_DIRECT(pa) \
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((pa) | VM_MIN_DIRECT_ADDRESS)
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#define TLB_DIRECT_TO_PHYS(va) \
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((va) & TLB_DIRECT_ADDRESS_MASK)
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#define TLB_DIRECT_TO_TTE_MASK \
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(TD_V | TD_4M | (TLB_DIRECT_ADDRESS_MASK - TLB_DIRECT_PAGE_MASK))
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#define TLB_DAR_SLOT_SHIFT (3)
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#define TLB_DAR_TLB_SHIFT (16)
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#define TLB_DAR_SLOT(tlb, slot) \
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((tlb) << TLB_DAR_TLB_SHIFT | (slot) << TLB_DAR_SLOT_SHIFT)
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#define TLB_DAR_T16 (0) /* US-III{,i,+}, IV{,+} */
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#define TLB_DAR_T32 (0) /* US-I, II{,e,i} */
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#define TLB_DAR_DT512_0 (2) /* US-III{,i,+}, IV{,+} */
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#define TLB_DAR_DT512_1 (3) /* US-III{,i,+}, IV{,+} */
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#define TLB_DAR_IT128 (2) /* US-III{,i,+}, IV */
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#define TLB_DAR_IT512 (2) /* US-IV+ */
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#define TLB_DAR_FTLB (0) /* SPARC64 V, VI, VII, VIIIfx */
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#define TLB_DAR_STLB (2) /* SPARC64 V, VI, VII, VIIIfx */
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#define TAR_VPN_SHIFT (13)
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#define TAR_CTX_MASK ((1 << TAR_VPN_SHIFT) - 1)
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#define TLB_TAR_VA(va) ((va) & ~TAR_CTX_MASK)
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#define TLB_TAR_CTX(ctx) ((ctx) & TAR_CTX_MASK)
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#define TLB_CXR_CTX_BITS (13)
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#define TLB_CXR_CTX_MASK \
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(((1UL << TLB_CXR_CTX_BITS) - 1) << TLB_CXR_CTX_SHIFT)
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#define TLB_CXR_CTX_SHIFT (0)
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#define TLB_CXR_PGSZ_BITS (3)
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#define TLB_CXR_PGSZ_MASK (~TLB_CXR_CTX_MASK)
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#define TLB_PCXR_N_IPGSZ0_SHIFT (53) /* SPARC64 VI, VII, VIIIfx */
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#define TLB_PCXR_N_IPGSZ1_SHIFT (50) /* SPARC64 VI, VII, VIIIfx */
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#define TLB_PCXR_N_PGSZ0_SHIFT (61)
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#define TLB_PCXR_N_PGSZ1_SHIFT (58)
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#define TLB_PCXR_N_PGSZ_I_SHIFT (55) /* US-IV+ */
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#define TLB_PCXR_P_IPGSZ0_SHIFT (24) /* SPARC64 VI, VII, VIIIfx */
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#define TLB_PCXR_P_IPGSZ1_SHIFT (27) /* SPARC64 VI, VII, VIIIfx */
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#define TLB_PCXR_P_PGSZ0_SHIFT (16)
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#define TLB_PCXR_P_PGSZ1_SHIFT (19)
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/*
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* Note that the US-IV+ documentation appears to have TLB_PCXR_P_PGSZ_I_SHIFT
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* and TLB_PCXR_P_PGSZ0_SHIFT erroneously inverted.
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*/
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#define TLB_PCXR_P_PGSZ_I_SHIFT (22) /* US-IV+ */
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#define TLB_SCXR_S_PGSZ1_SHIFT (19)
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#define TLB_SCXR_S_PGSZ0_SHIFT (16)
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#define TLB_TAE_PGSZ_BITS (3)
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#define TLB_TAE_PGSZ0_MASK \
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(((1UL << TLB_TAE_PGSZ_BITS) - 1) << TLB_TAE_PGSZ0_SHIFT)
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#define TLB_TAE_PGSZ1_MASK \
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(((1UL << TLB_TAE_PGSZ_BITS) - 1) << TLB_TAE_PGSZ1_SHIFT)
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#define TLB_TAE_PGSZ0_SHIFT (16)
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#define TLB_TAE_PGSZ1_SHIFT (19)
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#define TLB_DEMAP_ID_SHIFT (4)
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#define TLB_DEMAP_ID_PRIMARY (0)
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#define TLB_DEMAP_ID_SECONDARY (1)
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#define TLB_DEMAP_ID_NUCLEUS (2)
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#define TLB_DEMAP_TYPE_SHIFT (6)
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#define TLB_DEMAP_TYPE_PAGE (0)
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#define TLB_DEMAP_TYPE_CONTEXT (1)
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#define TLB_DEMAP_TYPE_ALL (2) /* US-III and beyond only */
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#define TLB_DEMAP_VA(va) ((va) & ~PAGE_MASK)
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#define TLB_DEMAP_ID(id) ((id) << TLB_DEMAP_ID_SHIFT)
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#define TLB_DEMAP_TYPE(type) ((type) << TLB_DEMAP_TYPE_SHIFT)
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#define TLB_DEMAP_PAGE (TLB_DEMAP_TYPE(TLB_DEMAP_TYPE_PAGE))
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#define TLB_DEMAP_CONTEXT (TLB_DEMAP_TYPE(TLB_DEMAP_TYPE_CONTEXT))
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#define TLB_DEMAP_ALL (TLB_DEMAP_TYPE(TLB_DEMAP_TYPE_ALL))
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#define TLB_DEMAP_PRIMARY (TLB_DEMAP_ID(TLB_DEMAP_ID_PRIMARY))
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#define TLB_DEMAP_SECONDARY (TLB_DEMAP_ID(TLB_DEMAP_ID_SECONDARY))
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#define TLB_DEMAP_NUCLEUS (TLB_DEMAP_ID(TLB_DEMAP_ID_NUCLEUS))
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#define TLB_CTX_KERNEL (0)
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#define TLB_CTX_USER_MIN (1)
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#define TLB_CTX_USER_MAX (8192)
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#define MMU_SFSR_ASI_SHIFT (16)
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#define MMU_SFSR_FT_SHIFT (7)
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#define MMU_SFSR_E_SHIFT (6)
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#define MMU_SFSR_CT_SHIFT (4)
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#define MMU_SFSR_PR_SHIFT (3)
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#define MMU_SFSR_W_SHIFT (2)
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#define MMU_SFSR_OW_SHIFT (1)
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#define MMU_SFSR_FV_SHIFT (0)
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#define MMU_SFSR_ASI_SIZE (8)
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#define MMU_SFSR_FT_SIZE (6)
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#define MMU_SFSR_CT_SIZE (2)
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#define MMU_SFSR_GET_ASI(sfsr) \
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(((sfsr) >> MMU_SFSR_ASI_SHIFT) & ((1UL << MMU_SFSR_ASI_SIZE) - 1))
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#define MMU_SFSR_GET_FT(sfsr) \
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(((sfsr) >> MMU_SFSR_FT_SHIFT) & ((1UL << MMU_SFSR_FT_SIZE) - 1))
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#define MMU_SFSR_GET_CT(sfsr) \
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(((sfsr) >> MMU_SFSR_CT_SHIFT) & ((1UL << MMU_SFSR_CT_SIZE) - 1))
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#define MMU_SFSR_E (1UL << MMU_SFSR_E_SHIFT)
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#define MMU_SFSR_PR (1UL << MMU_SFSR_PR_SHIFT)
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#define MMU_SFSR_W (1UL << MMU_SFSR_W_SHIFT)
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#define MMU_SFSR_OW (1UL << MMU_SFSR_OW_SHIFT)
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#define MMU_SFSR_FV (1UL << MMU_SFSR_FV_SHIFT)
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typedef void tlb_flush_nonlocked_t(void);
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typedef void tlb_flush_user_t(void);
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struct pmap;
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struct tlb_entry;
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extern int dtlb_slots;
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extern int itlb_slots;
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extern int kernel_tlb_slots;
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extern struct tlb_entry *kernel_tlbs;
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void tlb_context_demap(struct pmap *pm);
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void tlb_page_demap(struct pmap *pm, vm_offset_t va);
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void tlb_range_demap(struct pmap *pm, vm_offset_t start, vm_offset_t end);
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tlb_flush_nonlocked_t cheetah_tlb_flush_nonlocked;
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tlb_flush_user_t cheetah_tlb_flush_user;
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tlb_flush_nonlocked_t spitfire_tlb_flush_nonlocked;
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tlb_flush_user_t spitfire_tlb_flush_user;
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tlb_flush_nonlocked_t zeus_tlb_flush_nonlocked;
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tlb_flush_user_t zeus_tlb_flush_user;
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extern tlb_flush_nonlocked_t *tlb_flush_nonlocked;
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extern tlb_flush_user_t *tlb_flush_user;
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#endif /* !_MACHINE_TLB_H_ */
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