+++ /dev/null
-// SPDX-License-Identifier: GPL-2.0-only
-/*
- *
- * Copyright 2010 Paul Mackerras, IBM Corp. <paulus@au1.ibm.com>
- * Copyright 2011 David Gibson, IBM Corporation <dwg@au1.ibm.com>
- * Copyright 2016 Alexey Kardashevskiy, IBM Corporation <aik@au1.ibm.com>
- */
-
-#include <linux/types.h>
-#include <linux/string.h>
-#include <linux/kvm.h>
-#include <linux/kvm_host.h>
-#include <linux/highmem.h>
-#include <linux/gfp.h>
-#include <linux/slab.h>
-#include <linux/hugetlb.h>
-#include <linux/list.h>
-#include <linux/stringify.h>
-
-#include <asm/kvm_ppc.h>
-#include <asm/kvm_book3s.h>
-#include <asm/book3s/64/mmu-hash.h>
-#include <asm/mmu_context.h>
-#include <asm/hvcall.h>
-#include <asm/synch.h>
-#include <asm/ppc-opcode.h>
-#include <asm/udbg.h>
-#include <asm/iommu.h>
-#include <asm/tce.h>
-#include <asm/pte-walk.h>
-
-#ifdef CONFIG_BUG
-
-#define WARN_ON_ONCE_RM(condition) ({ \
- static bool __section(".data.unlikely") __warned; \
- int __ret_warn_once = !!(condition); \
- \
- if (unlikely(__ret_warn_once && !__warned)) { \
- __warned = true; \
- pr_err("WARN_ON_ONCE_RM: (%s) at %s:%u\n", \
- __stringify(condition), \
- __func__, __LINE__); \
- dump_stack(); \
- } \
- unlikely(__ret_warn_once); \
-})
-
-#else
-
-#define WARN_ON_ONCE_RM(condition) ({ \
- int __ret_warn_on = !!(condition); \
- unlikely(__ret_warn_on); \
-})
-
-#endif
-
-/*
- * Finds a TCE table descriptor by LIOBN.
- *
- * WARNING: This will be called in real or virtual mode on HV KVM and virtual
- * mode on PR KVM
- */
-struct kvmppc_spapr_tce_table *kvmppc_find_table(struct kvm *kvm,
- unsigned long liobn)
-{
- struct kvmppc_spapr_tce_table *stt;
-
- list_for_each_entry_lockless(stt, &kvm->arch.spapr_tce_tables, list)
- if (stt->liobn == liobn)
- return stt;
-
- return NULL;
-}
-EXPORT_SYMBOL_GPL(kvmppc_find_table);
-
-#ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE
-static long kvmppc_rm_tce_to_ua(struct kvm *kvm,
- unsigned long tce, unsigned long *ua)
-{
- unsigned long gfn = tce >> PAGE_SHIFT;
- struct kvm_memory_slot *memslot;
-
- memslot = __gfn_to_memslot(kvm_memslots_raw(kvm), gfn);
- if (!memslot)
- return -EINVAL;
-
- *ua = __gfn_to_hva_memslot(memslot, gfn) |
- (tce & ~(PAGE_MASK | TCE_PCI_READ | TCE_PCI_WRITE));
-
- return 0;
-}
-
-/*
- * Validates TCE address.
- * At the moment flags and page mask are validated.
- * As the host kernel does not access those addresses (just puts them
- * to the table and user space is supposed to process them), we can skip
- * checking other things (such as TCE is a guest RAM address or the page
- * was actually allocated).
- */
-static long kvmppc_rm_tce_validate(struct kvmppc_spapr_tce_table *stt,
- unsigned long tce)
-{
- unsigned long gpa = tce & ~(TCE_PCI_READ | TCE_PCI_WRITE);
- enum dma_data_direction dir = iommu_tce_direction(tce);
- struct kvmppc_spapr_tce_iommu_table *stit;
- unsigned long ua = 0;
-
- /* Allow userspace to poison TCE table */
- if (dir == DMA_NONE)
- return H_SUCCESS;
-
- if (iommu_tce_check_gpa(stt->page_shift, gpa))
- return H_PARAMETER;
-
- if (kvmppc_rm_tce_to_ua(stt->kvm, tce, &ua))
- return H_TOO_HARD;
-
- list_for_each_entry_lockless(stit, &stt->iommu_tables, next) {
- unsigned long hpa = 0;
- struct mm_iommu_table_group_mem_t *mem;
- long shift = stit->tbl->it_page_shift;
-
- mem = mm_iommu_lookup_rm(stt->kvm->mm, ua, 1ULL << shift);
- if (!mem)
- return H_TOO_HARD;
-
- if (mm_iommu_ua_to_hpa_rm(mem, ua, shift, &hpa))
- return H_TOO_HARD;
- }
-
- return H_SUCCESS;
-}
-
-/* Note on the use of page_address() in real mode,
- *
- * It is safe to use page_address() in real mode on ppc64 because
- * page_address() is always defined as lowmem_page_address()
- * which returns __va(PFN_PHYS(page_to_pfn(page))) which is arithmetic
- * operation and does not access page struct.
- *
- * Theoretically page_address() could be defined different
- * but either WANT_PAGE_VIRTUAL or HASHED_PAGE_VIRTUAL
- * would have to be enabled.
- * WANT_PAGE_VIRTUAL is never enabled on ppc32/ppc64,
- * HASHED_PAGE_VIRTUAL could be enabled for ppc32 only and only
- * if CONFIG_HIGHMEM is defined. As CONFIG_SPARSEMEM_VMEMMAP
- * is not expected to be enabled on ppc32, page_address()
- * is safe for ppc32 as well.
- *
- * WARNING: This will be called in real-mode on HV KVM and virtual
- * mode on PR KVM
- */
-static u64 *kvmppc_page_address(struct page *page)
-{
-#if defined(HASHED_PAGE_VIRTUAL) || defined(WANT_PAGE_VIRTUAL)
-#error TODO: fix to avoid page_address() here
-#endif
- return (u64 *) page_address(page);
-}
-
-/*
- * Handles TCE requests for emulated devices.
- * Puts guest TCE values to the table and expects user space to convert them.
- * Cannot fail so kvmppc_rm_tce_validate must be called before it.
- */
-static void kvmppc_rm_tce_put(struct kvmppc_spapr_tce_table *stt,
- unsigned long idx, unsigned long tce)
-{
- struct page *page;
- u64 *tbl;
-
- idx -= stt->offset;
- page = stt->pages[idx / TCES_PER_PAGE];
- /*
- * kvmppc_rm_ioba_validate() allows pages not be allocated if TCE is
- * being cleared, otherwise it returns H_TOO_HARD and we skip this.
- */
- if (!page) {
- WARN_ON_ONCE_RM(tce != 0);
- return;
- }
- tbl = kvmppc_page_address(page);
-
- tbl[idx % TCES_PER_PAGE] = tce;
-}
-
-/*
- * TCEs pages are allocated in kvmppc_rm_tce_put() which won't be able to do so
- * in real mode.
- * Check if kvmppc_rm_tce_put() can succeed in real mode, i.e. a TCEs page is
- * allocated or not required (when clearing a tce entry).
- */
-static long kvmppc_rm_ioba_validate(struct kvmppc_spapr_tce_table *stt,
- unsigned long ioba, unsigned long npages, bool clearing)
-{
- unsigned long i, idx, sttpage, sttpages;
- unsigned long ret = kvmppc_ioba_validate(stt, ioba, npages);
-
- if (ret)
- return ret;
- /*
- * clearing==true says kvmppc_rm_tce_put won't be allocating pages
- * for empty tces.
- */
- if (clearing)
- return H_SUCCESS;
-
- idx = (ioba >> stt->page_shift) - stt->offset;
- sttpage = idx / TCES_PER_PAGE;
- sttpages = ALIGN(idx % TCES_PER_PAGE + npages, TCES_PER_PAGE) /
- TCES_PER_PAGE;
- for (i = sttpage; i < sttpage + sttpages; ++i)
- if (!stt->pages[i])
- return H_TOO_HARD;
-
- return H_SUCCESS;
-}
-
-static long iommu_tce_xchg_no_kill_rm(struct mm_struct *mm,
- struct iommu_table *tbl,
- unsigned long entry, unsigned long *hpa,
- enum dma_data_direction *direction)
-{
- long ret;
-
- ret = tbl->it_ops->xchg_no_kill(tbl, entry, hpa, direction, true);
-
- if (!ret && ((*direction == DMA_FROM_DEVICE) ||
- (*direction == DMA_BIDIRECTIONAL))) {
- __be64 *pua = IOMMU_TABLE_USERSPACE_ENTRY_RO(tbl, entry);
- /*
- * kvmppc_rm_tce_iommu_do_map() updates the UA cache after
- * calling this so we still get here a valid UA.
- */
- if (pua && *pua)
- mm_iommu_ua_mark_dirty_rm(mm, be64_to_cpu(*pua));
- }
-
- return ret;
-}
-
-static void iommu_tce_kill_rm(struct iommu_table *tbl,
- unsigned long entry, unsigned long pages)
-{
- if (tbl->it_ops->tce_kill)
- tbl->it_ops->tce_kill(tbl, entry, pages, true);
-}
-
-static void kvmppc_rm_clear_tce(struct kvm *kvm, struct kvmppc_spapr_tce_table *stt,
- struct iommu_table *tbl, unsigned long entry)
-{
- unsigned long i;
- unsigned long subpages = 1ULL << (stt->page_shift - tbl->it_page_shift);
- unsigned long io_entry = entry << (stt->page_shift - tbl->it_page_shift);
-
- for (i = 0; i < subpages; ++i) {
- unsigned long hpa = 0;
- enum dma_data_direction dir = DMA_NONE;
-
- iommu_tce_xchg_no_kill_rm(kvm->mm, tbl, io_entry + i, &hpa, &dir);
- }
-}
-
-static long kvmppc_rm_tce_iommu_mapped_dec(struct kvm *kvm,
- struct iommu_table *tbl, unsigned long entry)
-{
- struct mm_iommu_table_group_mem_t *mem = NULL;
- const unsigned long pgsize = 1ULL << tbl->it_page_shift;
- __be64 *pua = IOMMU_TABLE_USERSPACE_ENTRY_RO(tbl, entry);
-
- if (!pua)
- /* it_userspace allocation might be delayed */
- return H_TOO_HARD;
-
- mem = mm_iommu_lookup_rm(kvm->mm, be64_to_cpu(*pua), pgsize);
- if (!mem)
- return H_TOO_HARD;
-
- mm_iommu_mapped_dec(mem);
-
- *pua = cpu_to_be64(0);
-
- return H_SUCCESS;
-}
-
-static long kvmppc_rm_tce_iommu_do_unmap(struct kvm *kvm,
- struct iommu_table *tbl, unsigned long entry)
-{
- enum dma_data_direction dir = DMA_NONE;
- unsigned long hpa = 0;
- long ret;
-
- if (iommu_tce_xchg_no_kill_rm(kvm->mm, tbl, entry, &hpa, &dir))
- /*
- * real mode xchg can fail if struct page crosses
- * a page boundary
- */
- return H_TOO_HARD;
-
- if (dir == DMA_NONE)
- return H_SUCCESS;
-
- ret = kvmppc_rm_tce_iommu_mapped_dec(kvm, tbl, entry);
- if (ret)
- iommu_tce_xchg_no_kill_rm(kvm->mm, tbl, entry, &hpa, &dir);
-
- return ret;
-}
-
-static long kvmppc_rm_tce_iommu_unmap(struct kvm *kvm,
- struct kvmppc_spapr_tce_table *stt, struct iommu_table *tbl,
- unsigned long entry)
-{
- unsigned long i, ret = H_SUCCESS;
- unsigned long subpages = 1ULL << (stt->page_shift - tbl->it_page_shift);
- unsigned long io_entry = entry * subpages;
-
- for (i = 0; i < subpages; ++i) {
- ret = kvmppc_rm_tce_iommu_do_unmap(kvm, tbl, io_entry + i);
- if (ret != H_SUCCESS)
- break;
- }
-
- iommu_tce_kill_rm(tbl, io_entry, subpages);
-
- return ret;
-}
-
-static long kvmppc_rm_tce_iommu_do_map(struct kvm *kvm, struct iommu_table *tbl,
- unsigned long entry, unsigned long ua,
- enum dma_data_direction dir)
-{
- long ret;
- unsigned long hpa = 0;
- __be64 *pua = IOMMU_TABLE_USERSPACE_ENTRY_RO(tbl, entry);
- struct mm_iommu_table_group_mem_t *mem;
-
- if (!pua)
- /* it_userspace allocation might be delayed */
- return H_TOO_HARD;
-
- mem = mm_iommu_lookup_rm(kvm->mm, ua, 1ULL << tbl->it_page_shift);
- if (!mem)
- return H_TOO_HARD;
-
- if (WARN_ON_ONCE_RM(mm_iommu_ua_to_hpa_rm(mem, ua, tbl->it_page_shift,
- &hpa)))
- return H_TOO_HARD;
-
- if (WARN_ON_ONCE_RM(mm_iommu_mapped_inc(mem)))
- return H_TOO_HARD;
-
- ret = iommu_tce_xchg_no_kill_rm(kvm->mm, tbl, entry, &hpa, &dir);
- if (ret) {
- mm_iommu_mapped_dec(mem);
- /*
- * real mode xchg can fail if struct page crosses
- * a page boundary
- */
- return H_TOO_HARD;
- }
-
- if (dir != DMA_NONE)
- kvmppc_rm_tce_iommu_mapped_dec(kvm, tbl, entry);
-
- *pua = cpu_to_be64(ua);
-
- return 0;
-}
-
-static long kvmppc_rm_tce_iommu_map(struct kvm *kvm,
- struct kvmppc_spapr_tce_table *stt, struct iommu_table *tbl,
- unsigned long entry, unsigned long ua,
- enum dma_data_direction dir)
-{
- unsigned long i, pgoff, ret = H_SUCCESS;
- unsigned long subpages = 1ULL << (stt->page_shift - tbl->it_page_shift);
- unsigned long io_entry = entry * subpages;
-
- for (i = 0, pgoff = 0; i < subpages;
- ++i, pgoff += IOMMU_PAGE_SIZE(tbl)) {
-
- ret = kvmppc_rm_tce_iommu_do_map(kvm, tbl,
- io_entry + i, ua + pgoff, dir);
- if (ret != H_SUCCESS)
- break;
- }
-
- iommu_tce_kill_rm(tbl, io_entry, subpages);
-
- return ret;
-}
-
-long kvmppc_rm_h_put_tce(struct kvm_vcpu *vcpu, unsigned long liobn,
- unsigned long ioba, unsigned long tce)
-{
- struct kvmppc_spapr_tce_table *stt;
- long ret;
- struct kvmppc_spapr_tce_iommu_table *stit;
- unsigned long entry, ua = 0;
- enum dma_data_direction dir;
-
- /* udbg_printf("H_PUT_TCE(): liobn=0x%lx ioba=0x%lx, tce=0x%lx\n", */
- /* liobn, ioba, tce); */
-
- stt = kvmppc_find_table(vcpu->kvm, liobn);
- if (!stt)
- return H_TOO_HARD;
-
- ret = kvmppc_rm_ioba_validate(stt, ioba, 1, tce == 0);
- if (ret != H_SUCCESS)
- return ret;
-
- ret = kvmppc_rm_tce_validate(stt, tce);
- if (ret != H_SUCCESS)
- return ret;
-
- dir = iommu_tce_direction(tce);
- if ((dir != DMA_NONE) && kvmppc_rm_tce_to_ua(vcpu->kvm, tce, &ua))
- return H_PARAMETER;
-
- entry = ioba >> stt->page_shift;
-
- list_for_each_entry_lockless(stit, &stt->iommu_tables, next) {
- if (dir == DMA_NONE)
- ret = kvmppc_rm_tce_iommu_unmap(vcpu->kvm, stt,
- stit->tbl, entry);
- else
- ret = kvmppc_rm_tce_iommu_map(vcpu->kvm, stt,
- stit->tbl, entry, ua, dir);
-
- if (ret != H_SUCCESS) {
- kvmppc_rm_clear_tce(vcpu->kvm, stt, stit->tbl, entry);
- return ret;
- }
- }
-
- kvmppc_rm_tce_put(stt, entry, tce);
-
- return H_SUCCESS;
-}
-
-static long kvmppc_rm_ua_to_hpa(struct kvm_vcpu *vcpu, unsigned long mmu_seq,
- unsigned long ua, unsigned long *phpa)
-{
- pte_t *ptep, pte;
- unsigned shift = 0;
-
- /*
- * Called in real mode with MSR_EE = 0. We are safe here.
- * It is ok to do the lookup with arch.pgdir here, because
- * we are doing this on secondary cpus and current task there
- * is not the hypervisor. Also this is safe against THP in the
- * host, because an IPI to primary thread will wait for the secondary
- * to exit which will agains result in the below page table walk
- * to finish.
- */
- /* an rmap lock won't make it safe. because that just ensure hash
- * page table entries are removed with rmap lock held. After that
- * mmu notifier returns and we go ahead and removing ptes from Qemu page table.
- */
- ptep = find_kvm_host_pte(vcpu->kvm, mmu_seq, ua, &shift);
- if (!ptep)
- return -ENXIO;
-
- pte = READ_ONCE(*ptep);
- if (!pte_present(pte))
- return -ENXIO;
-
- if (!shift)
- shift = PAGE_SHIFT;
-
- /* Avoid handling anything potentially complicated in realmode */
- if (shift > PAGE_SHIFT)
- return -EAGAIN;
-
- if (!pte_young(pte))
- return -EAGAIN;
-
- *phpa = (pte_pfn(pte) << PAGE_SHIFT) | (ua & ((1ULL << shift) - 1)) |
- (ua & ~PAGE_MASK);
-
- return 0;
-}
-
-long kvmppc_rm_h_put_tce_indirect(struct kvm_vcpu *vcpu,
- unsigned long liobn, unsigned long ioba,
- unsigned long tce_list, unsigned long npages)
-{
- struct kvm *kvm = vcpu->kvm;
- struct kvmppc_spapr_tce_table *stt;
- long i, ret = H_SUCCESS;
- unsigned long tces, entry, ua = 0;
- unsigned long mmu_seq;
- bool prereg = false;
- struct kvmppc_spapr_tce_iommu_table *stit;
-
- /*
- * used to check for invalidations in progress
- */
- mmu_seq = kvm->mmu_notifier_seq;
- smp_rmb();
-
- stt = kvmppc_find_table(vcpu->kvm, liobn);
- if (!stt)
- return H_TOO_HARD;
-
- entry = ioba >> stt->page_shift;
- /*
- * The spec says that the maximum size of the list is 512 TCEs
- * so the whole table addressed resides in 4K page
- */
- if (npages > 512)
- return H_PARAMETER;
-
- if (tce_list & (SZ_4K - 1))
- return H_PARAMETER;
-
- ret = kvmppc_rm_ioba_validate(stt, ioba, npages, false);
- if (ret != H_SUCCESS)
- return ret;
-
- if (mm_iommu_preregistered(vcpu->kvm->mm)) {
- /*
- * We get here if guest memory was pre-registered which
- * is normally VFIO case and gpa->hpa translation does not
- * depend on hpt.
- */
- struct mm_iommu_table_group_mem_t *mem;
-
- if (kvmppc_rm_tce_to_ua(vcpu->kvm, tce_list, &ua))
- return H_TOO_HARD;
-
- mem = mm_iommu_lookup_rm(vcpu->kvm->mm, ua, IOMMU_PAGE_SIZE_4K);
- if (mem)
- prereg = mm_iommu_ua_to_hpa_rm(mem, ua,
- IOMMU_PAGE_SHIFT_4K, &tces) == 0;
- }
-
- if (!prereg) {
- /*
- * This is usually a case of a guest with emulated devices only
- * when TCE list is not in preregistered memory.
- * We do not require memory to be preregistered in this case
- * so lock rmap and do __find_linux_pte_or_hugepte().
- */
- if (kvmppc_rm_tce_to_ua(vcpu->kvm, tce_list, &ua))
- return H_TOO_HARD;
-
- arch_spin_lock(&kvm->mmu_lock.rlock.raw_lock);
- if (kvmppc_rm_ua_to_hpa(vcpu, mmu_seq, ua, &tces)) {
- ret = H_TOO_HARD;
- goto unlock_exit;
- }
- }
-
- for (i = 0; i < npages; ++i) {
- unsigned long tce = be64_to_cpu(((u64 *)tces)[i]);
-
- ret = kvmppc_rm_tce_validate(stt, tce);
- if (ret != H_SUCCESS)
- goto unlock_exit;
- }
-
- for (i = 0; i < npages; ++i) {
- unsigned long tce = be64_to_cpu(((u64 *)tces)[i]);
-
- ua = 0;
- if (kvmppc_rm_tce_to_ua(vcpu->kvm, tce, &ua)) {
- ret = H_PARAMETER;
- goto unlock_exit;
- }
-
- list_for_each_entry_lockless(stit, &stt->iommu_tables, next) {
- ret = kvmppc_rm_tce_iommu_map(vcpu->kvm, stt,
- stit->tbl, entry + i, ua,
- iommu_tce_direction(tce));
-
- if (ret != H_SUCCESS) {
- kvmppc_rm_clear_tce(vcpu->kvm, stt, stit->tbl,
- entry + i);
- goto unlock_exit;
- }
- }
-
- kvmppc_rm_tce_put(stt, entry + i, tce);
- }
-
-unlock_exit:
- if (!prereg)
- arch_spin_unlock(&kvm->mmu_lock.rlock.raw_lock);
- return ret;
-}
-
-long kvmppc_rm_h_stuff_tce(struct kvm_vcpu *vcpu,
- unsigned long liobn, unsigned long ioba,
- unsigned long tce_value, unsigned long npages)
-{
- struct kvmppc_spapr_tce_table *stt;
- long i, ret;
- struct kvmppc_spapr_tce_iommu_table *stit;
-
- stt = kvmppc_find_table(vcpu->kvm, liobn);
- if (!stt)
- return H_TOO_HARD;
-
- ret = kvmppc_rm_ioba_validate(stt, ioba, npages, tce_value == 0);
- if (ret != H_SUCCESS)
- return ret;
-
- /* Check permission bits only to allow userspace poison TCE for debug */
- if (tce_value & (TCE_PCI_WRITE | TCE_PCI_READ))
- return H_PARAMETER;
-
- list_for_each_entry_lockless(stit, &stt->iommu_tables, next) {
- unsigned long entry = ioba >> stt->page_shift;
-
- for (i = 0; i < npages; ++i) {
- ret = kvmppc_rm_tce_iommu_unmap(vcpu->kvm, stt,
- stit->tbl, entry + i);
-
- if (ret == H_SUCCESS)
- continue;
-
- if (ret == H_TOO_HARD)
- return ret;
-
- WARN_ON_ONCE_RM(1);
- kvmppc_rm_clear_tce(vcpu->kvm, stt, stit->tbl, entry + i);
- }
- }
-
- for (i = 0; i < npages; ++i, ioba += (1ULL << stt->page_shift))
- kvmppc_rm_tce_put(stt, ioba >> stt->page_shift, tce_value);
-
- return ret;
-}
-
-/* This can be called in either virtual mode or real mode */
-long kvmppc_h_get_tce(struct kvm_vcpu *vcpu, unsigned long liobn,
- unsigned long ioba)
-{
- struct kvmppc_spapr_tce_table *stt;
- long ret;
- unsigned long idx;
- struct page *page;
- u64 *tbl;
-
- stt = kvmppc_find_table(vcpu->kvm, liobn);
- if (!stt)
- return H_TOO_HARD;
-
- ret = kvmppc_ioba_validate(stt, ioba, 1);
- if (ret != H_SUCCESS)
- return ret;
-
- idx = (ioba >> stt->page_shift) - stt->offset;
- page = stt->pages[idx / TCES_PER_PAGE];
- if (!page) {
- vcpu->arch.regs.gpr[4] = 0;
- return H_SUCCESS;
- }
- tbl = (u64 *)page_address(page);
-
- vcpu->arch.regs.gpr[4] = tbl[idx % TCES_PER_PAGE];
-
- return H_SUCCESS;
-}
-EXPORT_SYMBOL_GPL(kvmppc_h_get_tce);
-
-#endif /* KVM_BOOK3S_HV_POSSIBLE */
return false;
}
-static inline __be64 __iomem *pnv_ioda_get_inval_reg(struct pnv_phb *phb,
- bool real_mode)
+static inline __be64 __iomem *pnv_ioda_get_inval_reg(struct pnv_phb *phb)
{
- return real_mode ? (__be64 __iomem *)(phb->regs_phys + 0x210) :
- (phb->regs + 0x210);
+ return phb->regs + 0x210;
}
static void pnv_pci_p7ioc_tce_invalidate(struct iommu_table *tbl,
- unsigned long index, unsigned long npages, bool rm)
+ unsigned long index, unsigned long npages)
{
struct iommu_table_group_link *tgl = list_first_entry_or_null(
&tbl->it_group_list, struct iommu_table_group_link,
next);
struct pnv_ioda_pe *pe = container_of(tgl->table_group,
struct pnv_ioda_pe, table_group);
- __be64 __iomem *invalidate = pnv_ioda_get_inval_reg(pe->phb, rm);
+ __be64 __iomem *invalidate = pnv_ioda_get_inval_reg(pe->phb);
unsigned long start, end, inc;
start = __pa(((__be64 *)tbl->it_base) + index - tbl->it_offset);
mb(); /* Ensure above stores are visible */
while (start <= end) {
- if (rm)
- __raw_rm_writeq_be(start, invalidate);
- else
- __raw_writeq_be(start, invalidate);
-
+ __raw_writeq_be(start, invalidate);
start += inc;
}
attrs);
if (!ret)
- pnv_pci_p7ioc_tce_invalidate(tbl, index, npages, false);
+ pnv_pci_p7ioc_tce_invalidate(tbl, index, npages);
return ret;
}
#ifdef CONFIG_IOMMU_API
/* Common for IODA1 and IODA2 */
static int pnv_ioda_tce_xchg_no_kill(struct iommu_table *tbl, long index,
- unsigned long *hpa, enum dma_data_direction *direction,
- bool realmode)
+ unsigned long *hpa, enum dma_data_direction *direction)
{
- return pnv_tce_xchg(tbl, index, hpa, direction, !realmode);
+ return pnv_tce_xchg(tbl, index, hpa, direction);
}
#endif
{
pnv_tce_free(tbl, index, npages);
- pnv_pci_p7ioc_tce_invalidate(tbl, index, npages, false);
+ pnv_pci_p7ioc_tce_invalidate(tbl, index, npages);
}
static struct iommu_table_ops pnv_ioda1_iommu_ops = {
static inline void pnv_pci_phb3_tce_invalidate_pe(struct pnv_ioda_pe *pe)
{
/* 01xb - invalidate TCEs that match the specified PE# */
- __be64 __iomem *invalidate = pnv_ioda_get_inval_reg(pe->phb, false);
+ __be64 __iomem *invalidate = pnv_ioda_get_inval_reg(pe->phb);
unsigned long val = PHB3_TCE_KILL_INVAL_PE | (pe->pe_number & 0xFF);
mb(); /* Ensure above stores are visible */
__raw_writeq_be(val, invalidate);
}
-static void pnv_pci_phb3_tce_invalidate(struct pnv_ioda_pe *pe, bool rm,
+static void pnv_pci_phb3_tce_invalidate(struct pnv_ioda_pe *pe,
unsigned shift, unsigned long index,
unsigned long npages)
{
- __be64 __iomem *invalidate = pnv_ioda_get_inval_reg(pe->phb, rm);
+ __be64 __iomem *invalidate = pnv_ioda_get_inval_reg(pe->phb);
unsigned long start, end, inc;
/* We'll invalidate DMA address in PE scope */
mb();
while (start <= end) {
- if (rm)
- __raw_rm_writeq_be(start, invalidate);
- else
- __raw_writeq_be(start, invalidate);
+ __raw_writeq_be(start, invalidate);
start += inc;
}
}
}
static void pnv_pci_ioda2_tce_invalidate(struct iommu_table *tbl,
- unsigned long index, unsigned long npages, bool rm)
+ unsigned long index, unsigned long npages)
{
struct iommu_table_group_link *tgl;
unsigned int shift = tbl->it_page_shift;
if (phb->model == PNV_PHB_MODEL_PHB3 && phb->regs)
- pnv_pci_phb3_tce_invalidate(pe, rm, shift,
+ pnv_pci_phb3_tce_invalidate(pe, shift,
index, npages);
else
opal_pci_tce_kill(phb->opal_id,
attrs);
if (!ret)
- pnv_pci_ioda2_tce_invalidate(tbl, index, npages, false);
+ pnv_pci_ioda2_tce_invalidate(tbl, index, npages);
return ret;
}
{
pnv_tce_free(tbl, index, npages);
- pnv_pci_ioda2_tce_invalidate(tbl, index, npages, false);
+ pnv_pci_ioda2_tce_invalidate(tbl, index, npages);
}
static struct iommu_table_ops pnv_ioda2_iommu_ops = {
if (rc != OPAL_SUCCESS)
return;
- pnv_pci_p7ioc_tce_invalidate(tbl, tbl->it_offset, tbl->it_size, false);
+ pnv_pci_p7ioc_tce_invalidate(tbl, tbl->it_offset, tbl->it_size);
if (pe->table_group.group) {
iommu_group_put(pe->table_group.group);
WARN_ON(pe->table_group.group);
projects / kernel.git / commitdiff