From 5b7c4cabbb65f5c469464da6c5f614cbd7f730f2 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Tue, 21 Feb 2023 18:24:12 -0800 Subject: Merge tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next Pull networking updates from Jakub Kicinski: "Core: - Add dedicated kmem_cache for typical/small skb->head, avoid having to access struct page at kfree time, and improve memory use. - Introduce sysctl to set default RPS configuration for new netdevs. - Define Netlink protocol specification format which can be used to describe messages used by each family and auto-generate parsers. Add tools for generating kernel data structures and uAPI headers. - Expose all net/core sysctls inside netns. - Remove 4s sleep in netpoll if carrier is instantly detected on boot. - Add configurable limit of MDB entries per port, and port-vlan. - Continue populating drop reasons throughout the stack. - Retire a handful of legacy Qdiscs and classifiers. Protocols: - Support IPv4 big TCP (TSO frames larger than 64kB). - Add IP_LOCAL_PORT_RANGE socket option, to control local port range on socket by socket basis. - Track and report in procfs number of MPTCP sockets used. - Support mixing IPv4 and IPv6 flows in the in-kernel MPTCP path manager. - IPv6: don't check net.ipv6.route.max_size and rely on garbage collection to free memory (similarly to IPv4). - Support Penultimate Segment Pop (PSP) flavor in SRv6 (RFC8986). - ICMP: add per-rate limit counters. - Add support for user scanning requests in ieee802154. - Remove static WEP support. - Support minimal Wi-Fi 7 Extremely High Throughput (EHT) rate reporting. - WiFi 7 EHT channel puncturing support (client & AP). BPF: - Add a rbtree data structure following the "next-gen data structure" precedent set by recently added linked list, that is, by using kfunc + kptr instead of adding a new BPF map type. - Expose XDP hints via kfuncs with initial support for RX hash and timestamp metadata. - Add BPF_F_NO_TUNNEL_KEY extension to bpf_skb_set_tunnel_key to better support decap on GRE tunnel devices not operating in collect metadata. - Improve x86 JIT's codegen for PROBE_MEM runtime error checks. - Remove the need for trace_printk_lock for bpf_trace_printk and bpf_trace_vprintk helpers. - Extend libbpf's bpf_tracing.h support for tracing arguments of kprobes/uprobes and syscall as a special case. - Significantly reduce the search time for module symbols by livepatch and BPF. - Enable cpumasks to be used as kptrs, which is useful for tracing programs tracking which tasks end up running on which CPUs in different time intervals. - Add support for BPF trampoline on s390x and riscv64. - Add capability to export the XDP features supported by the NIC. - Add __bpf_kfunc tag for marking kernel functions as kfuncs. - Add cgroup.memory=nobpf kernel parameter option to disable BPF memory accounting for container environments. Netfilter: - Remove the CLUSTERIP target. It has been marked as obsolete for years, and we still have WARN splats wrt races of the out-of-band /proc interface installed by this target. - Add 'destroy' commands to nf_tables. They are identical to the existing 'delete' commands, but do not return an error if the referenced object (set, chain, rule...) did not exist. Driver API: - Improve cpumask_local_spread() locality to help NICs set the right IRQ affinity on AMD platforms. - Separate C22 and C45 MDIO bus transactions more clearly. - Introduce new DCB table to control DSCP rewrite on egress. - Support configuration of Physical Layer Collision Avoidance (PLCA) Reconciliation Sublayer (RS) (802.3cg-2019). Modern version of shared medium Ethernet. - Support for MAC Merge layer (IEEE 802.3-2018 clause 99). Allowing preemption of low priority frames by high priority frames. - Add support for controlling MACSec offload using netlink SET. - Rework devlink instance refcounts to allow registration and de-registration under the instance lock. Split the code into multiple files, drop some of the unnecessarily granular locks and factor out common parts of netlink operation handling. - Add TX frame aggregation parameters (for USB drivers). - Add a new attr TCA_EXT_WARN_MSG to report TC (offload) warning messages with notifications for debug. - Allow offloading of UDP NEW connections via act_ct. - Add support for per action HW stats in TC. - Support hardware miss to TC action (continue processing in SW from a specific point in the action chain). - Warn if old Wireless Extension user space interface is used with modern cfg80211/mac80211 drivers. Do not support Wireless Extensions for Wi-Fi 7 devices at all. Everyone should switch to using nl80211 interface instead. - Improve the CAN bit timing configuration. Use extack to return error messages directly to user space, update the SJW handling, including the definition of a new default value that will benefit CAN-FD controllers, by increasing their oscillator tolerance. New hardware / drivers: - Ethernet: - nVidia BlueField-3 support (control traffic driver) - Ethernet support for imx93 SoCs - Motorcomm yt8531 gigabit Ethernet PHY - onsemi NCN26000 10BASE-T1S PHY (with support for PLCA) - Microchip LAN8841 PHY (incl. cable diagnostics and PTP) - Amlogic gxl MDIO mux - WiFi: - RealTek RTL8188EU (rtl8xxxu) - Qualcomm Wi-Fi 7 devices (ath12k) - CAN: - Renesas R-Car V4H Drivers: - Bluetooth: - Set Per Platform Antenna Gain (PPAG) for Intel controllers. - Ethernet NICs: - Intel (1G, igc): - support TSN / Qbv / packet scheduling features of i226 model - Intel (100G, ice): - use GNSS subsystem instead of TTY - multi-buffer XDP support - extend support for GPIO pins to E823 devices - nVidia/Mellanox: - update the shared buffer configuration on PFC commands - implement PTP adjphase function for HW offset control - TC support for Geneve and GRE with VF tunnel offload - more efficient crypto key management method - multi-port eswitch support - Netronome/Corigine: - add DCB IEEE support - support IPsec offloading for NFP3800 - Freescale/NXP (enetc): - support XDP_REDIRECT for XDP non-linear buffers - improve reconfig, avoid link flap and waiting for idle - support MAC Merge layer - Other NICs: - sfc/ef100: add basic devlink support for ef100 - ionic: rx_push mode operation (writing descriptors via MMIO) - bnxt: use the auxiliary bus abstraction for RDMA - r8169: disable ASPM and reset bus in case of tx timeout - cpsw: support QSGMII mode for J721e CPSW9G - cpts: support pulse-per-second output - ngbe: add an mdio bus driver - usbnet: optimize usbnet_bh() by avoiding unnecessary queuing - r8152: handle devices with FW with NCM support - amd-xgbe: support 10Mbps, 2.5GbE speeds and rx-adaptation - virtio-net: support multi buffer XDP - virtio/vsock: replace virtio_vsock_pkt with sk_buff - tsnep: XDP support - Ethernet high-speed switches: - nVidia/Mellanox (mlxsw): - add support for latency TLV (in FW control messages) - Microchip (sparx5): - separate explicit and implicit traffic forwarding rules, make the implicit rules always active - add support for egress DSCP rewrite - IS0 VCAP support (Ingress Classification) - IS2 VCAP filters (protos, L3 addrs, L4 ports, flags, ToS etc.) - ES2 VCAP support (Egress Access Control) - support for Per-Stream Filtering and Policing (802.1Q, 8.6.5.1) - Ethernet embedded switches: - Marvell (mv88e6xxx): - add MAB (port auth) offload support - enable PTP receive for mv88e6390 - NXP (ocelot): - support MAC Merge layer - support for the the vsc7512 internal copper phys - Microchip: - lan9303: convert to PHYLINK - lan966x: support TC flower filter statistics - lan937x: PTP support for KSZ9563/KSZ8563 and LAN937x - lan937x: support Credit Based Shaper configuration - ksz9477: support Energy Efficient Ethernet - other: - qca8k: convert to regmap read/write API, use bulk operations - rswitch: Improve TX timestamp accuracy - Intel WiFi (iwlwifi): - EHT (Wi-Fi 7) rate reporting - STEP equalizer support: transfer some STEP (connection to radio on platforms with integrated wifi) related parameters from the BIOS to the firmware. - Qualcomm 802.11ax WiFi (ath11k): - IPQ5018 support - Fine Timing Measurement (FTM) responder role support - channel 177 support - MediaTek WiFi (mt76): - per-PHY LED support - mt7996: EHT (Wi-Fi 7) support - Wireless Ethernet Dispatch (WED) reset support - switch to using page pool allocator - RealTek WiFi (rtw89): - support new version of Bluetooth co-existance - Mobile: - rmnet: support TX aggregation" * tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1872 commits) page_pool: add a comment explaining the fragment counter usage net: ethtool: fix __ethtool_dev_mm_supported() implementation ethtool: pse-pd: Fix double word in comments xsk: add linux/vmalloc.h to xsk.c sefltests: netdevsim: wait for devlink instance after netns removal selftest: fib_tests: Always cleanup before exit net/mlx5e: Align IPsec ASO result memory to be as required by hardware net/mlx5e: TC, Set CT miss to the specific ct action instance net/mlx5e: Rename CHAIN_TO_REG to MAPPED_OBJ_TO_REG net/mlx5: Refactor tc miss handling to a single function net/mlx5: Kconfig: Make tc offload depend on tc skb extension net/sched: flower: Support hardware miss to tc action net/sched: flower: Move filter handle initialization earlier net/sched: cls_api: Support hardware miss to tc action net/sched: Rename user cookie and act cookie sfc: fix builds without CONFIG_RTC_LIB sfc: clean up some inconsistent indentings net/mlx4_en: Introduce flexible array to silence overflow warning net: lan966x: Fix possible deadlock inside PTP net/ulp: Remove redundant ->clone() test in inet_clone_ulp(). ... --- drivers/iommu/amd/io_pgtable.c | 537 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 537 insertions(+) create mode 100644 drivers/iommu/amd/io_pgtable.c (limited to 'drivers/iommu/amd/io_pgtable.c') diff --git a/drivers/iommu/amd/io_pgtable.c b/drivers/iommu/amd/io_pgtable.c new file mode 100644 index 000000000..ace0e9b8b --- /dev/null +++ b/drivers/iommu/amd/io_pgtable.c @@ -0,0 +1,537 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * CPU-agnostic AMD IO page table allocator. + * + * Copyright (C) 2020 Advanced Micro Devices, Inc. + * Author: Suravee Suthikulpanit + */ + +#define pr_fmt(fmt) "AMD-Vi: " fmt +#define dev_fmt(fmt) pr_fmt(fmt) + +#include +#include +#include +#include +#include +#include +#include +#include + +#include + +#include "amd_iommu_types.h" +#include "amd_iommu.h" + +static void v1_tlb_flush_all(void *cookie) +{ +} + +static void v1_tlb_flush_walk(unsigned long iova, size_t size, + size_t granule, void *cookie) +{ +} + +static void v1_tlb_add_page(struct iommu_iotlb_gather *gather, + unsigned long iova, size_t granule, + void *cookie) +{ +} + +static const struct iommu_flush_ops v1_flush_ops = { + .tlb_flush_all = v1_tlb_flush_all, + .tlb_flush_walk = v1_tlb_flush_walk, + .tlb_add_page = v1_tlb_add_page, +}; + +/* + * Helper function to get the first pte of a large mapping + */ +static u64 *first_pte_l7(u64 *pte, unsigned long *page_size, + unsigned long *count) +{ + unsigned long pte_mask, pg_size, cnt; + u64 *fpte; + + pg_size = PTE_PAGE_SIZE(*pte); + cnt = PAGE_SIZE_PTE_COUNT(pg_size); + pte_mask = ~((cnt << 3) - 1); + fpte = (u64 *)(((unsigned long)pte) & pte_mask); + + if (page_size) + *page_size = pg_size; + + if (count) + *count = cnt; + + return fpte; +} + +/**************************************************************************** + * + * The functions below are used the create the page table mappings for + * unity mapped regions. + * + ****************************************************************************/ + +static void free_pt_page(u64 *pt, struct list_head *freelist) +{ + struct page *p = virt_to_page(pt); + + list_add_tail(&p->lru, freelist); +} + +static void free_pt_lvl(u64 *pt, struct list_head *freelist, int lvl) +{ + u64 *p; + int i; + + for (i = 0; i < 512; ++i) { + /* PTE present? */ + if (!IOMMU_PTE_PRESENT(pt[i])) + continue; + + /* Large PTE? */ + if (PM_PTE_LEVEL(pt[i]) == 0 || + PM_PTE_LEVEL(pt[i]) == 7) + continue; + + /* + * Free the next level. No need to look at l1 tables here since + * they can only contain leaf PTEs; just free them directly. + */ + p = IOMMU_PTE_PAGE(pt[i]); + if (lvl > 2) + free_pt_lvl(p, freelist, lvl - 1); + else + free_pt_page(p, freelist); + } + + free_pt_page(pt, freelist); +} + +static void free_sub_pt(u64 *root, int mode, struct list_head *freelist) +{ + switch (mode) { + case PAGE_MODE_NONE: + case PAGE_MODE_7_LEVEL: + break; + case PAGE_MODE_1_LEVEL: + free_pt_page(root, freelist); + break; + case PAGE_MODE_2_LEVEL: + case PAGE_MODE_3_LEVEL: + case PAGE_MODE_4_LEVEL: + case PAGE_MODE_5_LEVEL: + case PAGE_MODE_6_LEVEL: + free_pt_lvl(root, freelist, mode); + break; + default: + BUG(); + } +} + +void amd_iommu_domain_set_pgtable(struct protection_domain *domain, + u64 *root, int mode) +{ + u64 pt_root; + + /* lowest 3 bits encode pgtable mode */ + pt_root = mode & 7; + pt_root |= (u64)root; + + amd_iommu_domain_set_pt_root(domain, pt_root); +} + +/* + * This function is used to add another level to an IO page table. Adding + * another level increases the size of the address space by 9 bits to a size up + * to 64 bits. + */ +static bool increase_address_space(struct protection_domain *domain, + unsigned long address, + gfp_t gfp) +{ + unsigned long flags; + bool ret = true; + u64 *pte; + + pte = (void *)get_zeroed_page(gfp); + if (!pte) + return false; + + spin_lock_irqsave(&domain->lock, flags); + + if (address <= PM_LEVEL_SIZE(domain->iop.mode)) + goto out; + + ret = false; + if (WARN_ON_ONCE(domain->iop.mode == PAGE_MODE_6_LEVEL)) + goto out; + + *pte = PM_LEVEL_PDE(domain->iop.mode, iommu_virt_to_phys(domain->iop.root)); + + domain->iop.root = pte; + domain->iop.mode += 1; + amd_iommu_update_and_flush_device_table(domain); + amd_iommu_domain_flush_complete(domain); + + /* + * Device Table needs to be updated and flushed before the new root can + * be published. + */ + amd_iommu_domain_set_pgtable(domain, pte, domain->iop.mode); + + pte = NULL; + ret = true; + +out: + spin_unlock_irqrestore(&domain->lock, flags); + free_page((unsigned long)pte); + + return ret; +} + +static u64 *alloc_pte(struct protection_domain *domain, + unsigned long address, + unsigned long page_size, + u64 **pte_page, + gfp_t gfp, + bool *updated) +{ + int level, end_lvl; + u64 *pte, *page; + + BUG_ON(!is_power_of_2(page_size)); + + while (address > PM_LEVEL_SIZE(domain->iop.mode)) { + /* + * Return an error if there is no memory to update the + * page-table. + */ + if (!increase_address_space(domain, address, gfp)) + return NULL; + } + + + level = domain->iop.mode - 1; + pte = &domain->iop.root[PM_LEVEL_INDEX(level, address)]; + address = PAGE_SIZE_ALIGN(address, page_size); + end_lvl = PAGE_SIZE_LEVEL(page_size); + + while (level > end_lvl) { + u64 __pte, __npte; + int pte_level; + + __pte = *pte; + pte_level = PM_PTE_LEVEL(__pte); + + /* + * If we replace a series of large PTEs, we need + * to tear down all of them. + */ + if (IOMMU_PTE_PRESENT(__pte) && + pte_level == PAGE_MODE_7_LEVEL) { + unsigned long count, i; + u64 *lpte; + + lpte = first_pte_l7(pte, NULL, &count); + + /* + * Unmap the replicated PTEs that still match the + * original large mapping + */ + for (i = 0; i < count; ++i) + cmpxchg64(&lpte[i], __pte, 0ULL); + + *updated = true; + continue; + } + + if (!IOMMU_PTE_PRESENT(__pte) || + pte_level == PAGE_MODE_NONE) { + page = (u64 *)get_zeroed_page(gfp); + + if (!page) + return NULL; + + __npte = PM_LEVEL_PDE(level, iommu_virt_to_phys(page)); + + /* pte could have been changed somewhere. */ + if (!try_cmpxchg64(pte, &__pte, __npte)) + free_page((unsigned long)page); + else if (IOMMU_PTE_PRESENT(__pte)) + *updated = true; + + continue; + } + + /* No level skipping support yet */ + if (pte_level != level) + return NULL; + + level -= 1; + + pte = IOMMU_PTE_PAGE(__pte); + + if (pte_page && level == end_lvl) + *pte_page = pte; + + pte = &pte[PM_LEVEL_INDEX(level, address)]; + } + + return pte; +} + +/* + * This function checks if there is a PTE for a given dma address. If + * there is one, it returns the pointer to it. + */ +static u64 *fetch_pte(struct amd_io_pgtable *pgtable, + unsigned long address, + unsigned long *page_size) +{ + int level; + u64 *pte; + + *page_size = 0; + + if (address > PM_LEVEL_SIZE(pgtable->mode)) + return NULL; + + level = pgtable->mode - 1; + pte = &pgtable->root[PM_LEVEL_INDEX(level, address)]; + *page_size = PTE_LEVEL_PAGE_SIZE(level); + + while (level > 0) { + + /* Not Present */ + if (!IOMMU_PTE_PRESENT(*pte)) + return NULL; + + /* Large PTE */ + if (PM_PTE_LEVEL(*pte) == 7 || + PM_PTE_LEVEL(*pte) == 0) + break; + + /* No level skipping support yet */ + if (PM_PTE_LEVEL(*pte) != level) + return NULL; + + level -= 1; + + /* Walk to the next level */ + pte = IOMMU_PTE_PAGE(*pte); + pte = &pte[PM_LEVEL_INDEX(level, address)]; + *page_size = PTE_LEVEL_PAGE_SIZE(level); + } + + /* + * If we have a series of large PTEs, make + * sure to return a pointer to the first one. + */ + if (PM_PTE_LEVEL(*pte) == PAGE_MODE_7_LEVEL) + pte = first_pte_l7(pte, page_size, NULL); + + return pte; +} + +static void free_clear_pte(u64 *pte, u64 pteval, struct list_head *freelist) +{ + u64 *pt; + int mode; + + while (!try_cmpxchg64(pte, &pteval, 0)) + pr_warn("AMD-Vi: IOMMU pte changed since we read it\n"); + + if (!IOMMU_PTE_PRESENT(pteval)) + return; + + pt = IOMMU_PTE_PAGE(pteval); + mode = IOMMU_PTE_MODE(pteval); + + free_sub_pt(pt, mode, freelist); +} + +/* + * Generic mapping functions. It maps a physical address into a DMA + * address space. It allocates the page table pages if necessary. + * In the future it can be extended to a generic mapping function + * supporting all features of AMD IOMMU page tables like level skipping + * and full 64 bit address spaces. + */ +static int iommu_v1_map_pages(struct io_pgtable_ops *ops, unsigned long iova, + phys_addr_t paddr, size_t pgsize, size_t pgcount, + int prot, gfp_t gfp, size_t *mapped) +{ + struct protection_domain *dom = io_pgtable_ops_to_domain(ops); + LIST_HEAD(freelist); + bool updated = false; + u64 __pte, *pte; + int ret, i, count; + + BUG_ON(!IS_ALIGNED(iova, pgsize)); + BUG_ON(!IS_ALIGNED(paddr, pgsize)); + + ret = -EINVAL; + if (!(prot & IOMMU_PROT_MASK)) + goto out; + + while (pgcount > 0) { + count = PAGE_SIZE_PTE_COUNT(pgsize); + pte = alloc_pte(dom, iova, pgsize, NULL, gfp, &updated); + + ret = -ENOMEM; + if (!pte) + goto out; + + for (i = 0; i < count; ++i) + free_clear_pte(&pte[i], pte[i], &freelist); + + if (!list_empty(&freelist)) + updated = true; + + if (count > 1) { + __pte = PAGE_SIZE_PTE(__sme_set(paddr), pgsize); + __pte |= PM_LEVEL_ENC(7) | IOMMU_PTE_PR | IOMMU_PTE_FC; + } else + __pte = __sme_set(paddr) | IOMMU_PTE_PR | IOMMU_PTE_FC; + + if (prot & IOMMU_PROT_IR) + __pte |= IOMMU_PTE_IR; + if (prot & IOMMU_PROT_IW) + __pte |= IOMMU_PTE_IW; + + for (i = 0; i < count; ++i) + pte[i] = __pte; + + iova += pgsize; + paddr += pgsize; + pgcount--; + if (mapped) + *mapped += pgsize; + } + + ret = 0; + +out: + if (updated) { + unsigned long flags; + + spin_lock_irqsave(&dom->lock, flags); + /* + * Flush domain TLB(s) and wait for completion. Any Device-Table + * Updates and flushing already happened in + * increase_address_space(). + */ + amd_iommu_domain_flush_tlb_pde(dom); + amd_iommu_domain_flush_complete(dom); + spin_unlock_irqrestore(&dom->lock, flags); + } + + /* Everything flushed out, free pages now */ + put_pages_list(&freelist); + + return ret; +} + +static unsigned long iommu_v1_unmap_pages(struct io_pgtable_ops *ops, + unsigned long iova, + size_t pgsize, size_t pgcount, + struct iommu_iotlb_gather *gather) +{ + struct amd_io_pgtable *pgtable = io_pgtable_ops_to_data(ops); + unsigned long long unmapped; + unsigned long unmap_size; + u64 *pte; + size_t size = pgcount << __ffs(pgsize); + + BUG_ON(!is_power_of_2(pgsize)); + + unmapped = 0; + + while (unmapped < size) { + pte = fetch_pte(pgtable, iova, &unmap_size); + if (pte) { + int i, count; + + count = PAGE_SIZE_PTE_COUNT(unmap_size); + for (i = 0; i < count; i++) + pte[i] = 0ULL; + } else { + return unmapped; + } + + iova = (iova & ~(unmap_size - 1)) + unmap_size; + unmapped += unmap_size; + } + + return unmapped; +} + +static phys_addr_t iommu_v1_iova_to_phys(struct io_pgtable_ops *ops, unsigned long iova) +{ + struct amd_io_pgtable *pgtable = io_pgtable_ops_to_data(ops); + unsigned long offset_mask, pte_pgsize; + u64 *pte, __pte; + + pte = fetch_pte(pgtable, iova, &pte_pgsize); + + if (!pte || !IOMMU_PTE_PRESENT(*pte)) + return 0; + + offset_mask = pte_pgsize - 1; + __pte = __sme_clr(*pte & PM_ADDR_MASK); + + return (__pte & ~offset_mask) | (iova & offset_mask); +} + +/* + * ---------------------------------------------------- + */ +static void v1_free_pgtable(struct io_pgtable *iop) +{ + struct amd_io_pgtable *pgtable = container_of(iop, struct amd_io_pgtable, iop); + struct protection_domain *dom; + LIST_HEAD(freelist); + + if (pgtable->mode == PAGE_MODE_NONE) + return; + + dom = container_of(pgtable, struct protection_domain, iop); + + /* Page-table is not visible to IOMMU anymore, so free it */ + BUG_ON(pgtable->mode < PAGE_MODE_NONE || + pgtable->mode > PAGE_MODE_6_LEVEL); + + free_sub_pt(pgtable->root, pgtable->mode, &freelist); + + /* Update data structure */ + amd_iommu_domain_clr_pt_root(dom); + + /* Make changes visible to IOMMUs */ + amd_iommu_domain_update(dom); + + put_pages_list(&freelist); +} + +static struct io_pgtable *v1_alloc_pgtable(struct io_pgtable_cfg *cfg, void *cookie) +{ + struct amd_io_pgtable *pgtable = io_pgtable_cfg_to_data(cfg); + + cfg->pgsize_bitmap = AMD_IOMMU_PGSIZES, + cfg->ias = IOMMU_IN_ADDR_BIT_SIZE, + cfg->oas = IOMMU_OUT_ADDR_BIT_SIZE, + cfg->tlb = &v1_flush_ops; + + pgtable->iop.ops.map_pages = iommu_v1_map_pages; + pgtable->iop.ops.unmap_pages = iommu_v1_unmap_pages; + pgtable->iop.ops.iova_to_phys = iommu_v1_iova_to_phys; + + return &pgtable->iop; +} + +struct io_pgtable_init_fns io_pgtable_amd_iommu_v1_init_fns = { + .alloc = v1_alloc_pgtable, + .free = v1_free_pgtable, +}; -- cgit v1.2.3