[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [PATCH v2 2/3] drivers: Change find_iommu_for_device function to take pci_sbdf_t, simplify code
Following a similar change to amd_iommu struct, change the find_iommu_for_device function to take pci_sbdf_t as a single parameter. This avoids splitting a single argument into two registers in the majority of cases. Bloat-o-meter reports (on top of the first patch in the series): add/remove: 0/0 grow/shrink: 11/13 up/down: 90/-154 (-64) Function old new delta amd_iommu_get_supported_ivhd_type 54 86 +32 parse_ivrs_table 3955 3966 +11 amd_iommu_assign_device 271 282 +11 __mon_lengths 2928 2936 +8 update_intremap_entry_from_msi_msg 859 864 +5 iov_supports_xt 270 275 +5 amd_setup_hpet_msi 232 237 +5 amd_iommu_domain_destroy 43 48 +5 find_iommu_for_device 242 246 +4 amd_iommu_ioapic_update_ire 572 575 +3 allocate_domain_resources 82 83 +1 amd_iommu_read_ioapic_from_ire 347 344 -3 reassign_device 843 838 -5 amd_iommu_remove_device 352 347 -5 amd_iommu_get_reserved_device_memory 524 519 -5 amd_iommu_flush_iotlb 359 354 -5 amd_iommu_add_device 844 839 -5 amd_iommu_setup_domain_device 1478 1472 -6 build_info 752 744 -8 amd_iommu_detect_one_acpi 886 876 -10 register_range_for_device 297 281 -16 amd_iommu_msi_msg_update_ire 472 448 -24 parse_ivmd_block 1339 1312 -27 _hvm_dpci_msi_eoi 168 133 -35 Signed-off-by: Andrii Sultanov <sultanovandriy@xxxxxxxxx> --- > This avoids splitting a single argument into two registers And adds a few conversions into a pci_sbdf_t... these are addressed further in the series. - not part of the commit message in case said commit isn't taken. Changes in V2: * Split single commit into several patches * Dropped brackets around &(iommu->sbdf) and &(sbdf) * Dropped most of the hunk in _invalidate_all_devices - it was bloat-equivalent to the existing code - just convert with PCI_SBDF instead * Dropped the hunk in get_intremap_requestor_id (iommu_intr.c) and amd_iommu_get_reserved_device_memory (iommu_map.c) as they were only increasing the code size. * Kept "/* XXX */" where appropriate * Fixed a slip-up in register_range_for_iommu_devices where iommu->sbdf replaced the usage of *different* seg and bdf. --- xen/drivers/passthrough/amd/iommu.h | 2 +- xen/drivers/passthrough/amd/iommu_acpi.c | 14 ++++----- xen/drivers/passthrough/amd/iommu_cmd.c | 2 +- xen/drivers/passthrough/amd/iommu_init.c | 4 +-- xen/drivers/passthrough/amd/iommu_intr.c | 20 ++++++------- xen/drivers/passthrough/amd/iommu_map.c | 2 +- xen/drivers/passthrough/amd/pci_amd_iommu.c | 32 ++++++++++----------- 7 files changed, 38 insertions(+), 38 deletions(-) diff --git a/xen/drivers/passthrough/amd/iommu.h b/xen/drivers/passthrough/amd/iommu.h index a30c8c97ea..a9e64b8304 100644 --- a/xen/drivers/passthrough/amd/iommu.h +++ b/xen/drivers/passthrough/amd/iommu.h @@ -246,7 +246,7 @@ void amd_iommu_flush_intremap(struct amd_iommu *iommu, uint16_t bdf); void amd_iommu_flush_all_caches(struct amd_iommu *iommu); /* find iommu for bdf */ -struct amd_iommu *find_iommu_for_device(int seg, int bdf); +struct amd_iommu *find_iommu_for_device(pci_sbdf_t sbdf); /* interrupt remapping */ bool cf_check iov_supports_xt(void); diff --git a/xen/drivers/passthrough/amd/iommu_acpi.c b/xen/drivers/passthrough/amd/iommu_acpi.c index 5bdbfb5ba8..ed5a3700c0 100644 --- a/xen/drivers/passthrough/amd/iommu_acpi.c +++ b/xen/drivers/passthrough/amd/iommu_acpi.c @@ -239,17 +239,17 @@ static int __init register_range_for_device( unsigned int bdf, paddr_t base, paddr_t limit, bool iw, bool ir, bool exclusion) { - int seg = 0; /* XXX */ - struct ivrs_mappings *ivrs_mappings = get_ivrs_mappings(seg); + pci_sbdf_t sbdf = { .seg = 0 /* XXX */, .bdf = bdf }; + struct ivrs_mappings *ivrs_mappings = get_ivrs_mappings(sbdf.seg); struct amd_iommu *iommu; u16 req; int rc = 0; - iommu = find_iommu_for_device(seg, bdf); + iommu = find_iommu_for_device(sbdf); if ( !iommu ) { AMD_IOMMU_WARN("IVMD: no IOMMU for device %pp - ignoring constrain\n", - &PCI_SBDF(seg, bdf)); + &sbdf); return 0; } req = ivrs_mappings[bdf].dte_requestor_id; @@ -263,9 +263,9 @@ static int __init register_range_for_device( paddr_t length = limit + PAGE_SIZE - base; /* reserve unity-mapped page entries for device */ - rc = reserve_unity_map_for_device(seg, bdf, base, length, iw, ir, + rc = reserve_unity_map_for_device(sbdf.seg, bdf, base, length, iw, ir, false) ?: - reserve_unity_map_for_device(seg, req, base, length, iw, ir, + reserve_unity_map_for_device(sbdf.seg, req, base, length, iw, ir, false); } else @@ -297,7 +297,7 @@ static int __init register_range_for_iommu_devices( /* reserve unity-mapped page entries for devices */ for ( bdf = rc = 0; !rc && bdf < ivrs_bdf_entries; bdf++ ) { - if ( iommu != find_iommu_for_device(iommu->seg, bdf) ) + if ( iommu != find_iommu_for_device(PCI_SBDF(iommu->seg, bdf)) ) continue; req = get_ivrs_mappings(iommu->seg)[bdf].dte_requestor_id; diff --git a/xen/drivers/passthrough/amd/iommu_cmd.c b/xen/drivers/passthrough/amd/iommu_cmd.c index d7162e36d6..facc9d2f6d 100644 --- a/xen/drivers/passthrough/amd/iommu_cmd.c +++ b/xen/drivers/passthrough/amd/iommu_cmd.c @@ -288,7 +288,7 @@ void amd_iommu_flush_iotlb(u8 devfn, const struct pci_dev *pdev, if ( !pci_ats_enabled(pdev->seg, pdev->bus, pdev->devfn) ) return; - iommu = find_iommu_for_device(pdev->seg, pdev->sbdf.bdf); + iommu = find_iommu_for_device(pdev->sbdf); if ( !iommu ) { diff --git a/xen/drivers/passthrough/amd/iommu_init.c b/xen/drivers/passthrough/amd/iommu_init.c index ea930426be..01beea1d29 100644 --- a/xen/drivers/passthrough/amd/iommu_init.c +++ b/xen/drivers/passthrough/amd/iommu_init.c @@ -1540,13 +1540,13 @@ static void invalidate_all_domain_pages(void) static int cf_check _invalidate_all_devices( u16 seg, struct ivrs_mappings *ivrs_mappings) { - unsigned int bdf; + unsigned int bdf; u16 req_id; struct amd_iommu *iommu; for ( bdf = 0; bdf < ivrs_bdf_entries; bdf++ ) { - iommu = find_iommu_for_device(seg, bdf); + iommu = find_iommu_for_device(PCI_SBDF(seg, bdf)); req_id = ivrs_mappings[bdf].dte_requestor_id; if ( iommu ) { diff --git a/xen/drivers/passthrough/amd/iommu_intr.c b/xen/drivers/passthrough/amd/iommu_intr.c index 9abdc38053..4d7dc2fdb4 100644 --- a/xen/drivers/passthrough/amd/iommu_intr.c +++ b/xen/drivers/passthrough/amd/iommu_intr.c @@ -337,7 +337,7 @@ void cf_check amd_iommu_ioapic_update_ire( /* get device id of ioapic devices */ bdf = ioapic_sbdf[idx].bdf; seg = ioapic_sbdf[idx].seg; - iommu = find_iommu_for_device(seg, bdf); + iommu = find_iommu_for_device(PCI_SBDF(seg, bdf)); if ( !iommu ) { AMD_IOMMU_WARN("failed to find IOMMU for IO-APIC @ %04x:%04x\n", @@ -383,7 +383,7 @@ unsigned int cf_check amd_iommu_read_ioapic_from_ire( seg = ioapic_sbdf[idx].seg; bdf = ioapic_sbdf[idx].bdf; - iommu = find_iommu_for_device(seg, bdf); + iommu = find_iommu_for_device(PCI_SBDF(seg, bdf)); if ( !iommu ) return val; req_id = get_intremap_requestor_id(seg, bdf); @@ -495,19 +495,19 @@ static int update_intremap_entry_from_msi_msg( return fresh; } -static struct amd_iommu *_find_iommu_for_device(int seg, int bdf) +static struct amd_iommu *_find_iommu_for_device(pci_sbdf_t sbdf) { struct amd_iommu *iommu; for_each_amd_iommu ( iommu ) - if ( iommu->seg == seg && iommu->bdf == bdf ) + if ( iommu->sbdf.sbdf == sbdf.sbdf ) return NULL; - iommu = find_iommu_for_device(seg, bdf); + iommu = find_iommu_for_device(sbdf); if ( iommu ) return iommu; - AMD_IOMMU_DEBUG("No IOMMU for MSI dev = %pp\n", &PCI_SBDF(seg, bdf)); + AMD_IOMMU_DEBUG("No IOMMU for MSI dev = %pp\n", &sbdf); return ERR_PTR(-EINVAL); } @@ -523,7 +523,7 @@ int cf_check amd_iommu_msi_msg_update_ire( bdf = pdev ? pdev->sbdf.bdf : hpet_sbdf.bdf; seg = pdev ? pdev->seg : hpet_sbdf.seg; - iommu = _find_iommu_for_device(seg, bdf); + iommu = _find_iommu_for_device(PCI_SBDF(seg, bdf)); if ( IS_ERR_OR_NULL(iommu) ) return PTR_ERR(iommu); @@ -660,8 +660,8 @@ bool __init cf_check iov_supports_xt(void) if ( idx == MAX_IO_APICS ) return false; - if ( !find_iommu_for_device(ioapic_sbdf[idx].seg, - ioapic_sbdf[idx].bdf) ) + if ( !find_iommu_for_device(PCI_SBDF(ioapic_sbdf[idx].seg, + ioapic_sbdf[idx].bdf)) ) { AMD_IOMMU_WARN("no IOMMU for IO-APIC %#x (ID %x)\n", apic, IO_APIC_ID(apic)); @@ -690,7 +690,7 @@ int __init cf_check amd_setup_hpet_msi(struct msi_desc *msi_desc) return -ENODEV; } - iommu = find_iommu_for_device(hpet_sbdf.seg, hpet_sbdf.bdf); + iommu = find_iommu_for_device(PCI_SBDF(hpet_sbdf.seg, hpet_sbdf.bdf)); if ( !iommu ) return -ENXIO; diff --git a/xen/drivers/passthrough/amd/iommu_map.c b/xen/drivers/passthrough/amd/iommu_map.c index ea68edc0f2..48d6498868 100644 --- a/xen/drivers/passthrough/amd/iommu_map.c +++ b/xen/drivers/passthrough/amd/iommu_map.c @@ -717,7 +717,7 @@ int cf_check amd_iommu_get_reserved_device_memory( pcidevs_unlock(); if ( pdev ) - iommu = find_iommu_for_device(seg, bdf); + iommu = find_iommu_for_device(sbdf); if ( !iommu ) continue; } diff --git a/xen/drivers/passthrough/amd/pci_amd_iommu.c b/xen/drivers/passthrough/amd/pci_amd_iommu.c index d00697edb3..16bab0f948 100644 --- a/xen/drivers/passthrough/amd/pci_amd_iommu.c +++ b/xen/drivers/passthrough/amd/pci_amd_iommu.c @@ -32,35 +32,35 @@ static bool __read_mostly init_done; static const struct iommu_init_ops _iommu_init_ops; -struct amd_iommu *find_iommu_for_device(int seg, int bdf) +struct amd_iommu *find_iommu_for_device(pci_sbdf_t sbdf) { - struct ivrs_mappings *ivrs_mappings = get_ivrs_mappings(seg); + struct ivrs_mappings *ivrs_mappings = get_ivrs_mappings(sbdf.seg); - if ( !ivrs_mappings || bdf >= ivrs_bdf_entries ) + if ( !ivrs_mappings || sbdf.bdf >= ivrs_bdf_entries ) return NULL; - if ( unlikely(!ivrs_mappings[bdf].iommu) && likely(init_done) ) + if ( unlikely(!ivrs_mappings[sbdf.bdf].iommu) && likely(init_done) ) { - unsigned int bd0 = bdf & ~PCI_FUNC(~0); + unsigned int bd0 = sbdf.bdf & ~PCI_FUNC(~0); - if ( ivrs_mappings[bd0].iommu && ivrs_mappings[bd0].iommu->bdf != bdf ) + if ( ivrs_mappings[bd0].iommu && ivrs_mappings[bd0].iommu->bdf != sbdf.bdf ) { struct ivrs_mappings tmp = ivrs_mappings[bd0]; tmp.iommu = NULL; if ( tmp.dte_requestor_id == bd0 ) - tmp.dte_requestor_id = bdf; - ivrs_mappings[bdf] = tmp; + tmp.dte_requestor_id = sbdf.bdf; + ivrs_mappings[sbdf.bdf] = tmp; printk(XENLOG_WARNING "%pp not found in ACPI tables;" - " using same IOMMU as function 0\n", &PCI_SBDF(seg, bdf)); + " using same IOMMU as function 0\n", &sbdf); /* write iommu field last */ - ivrs_mappings[bdf].iommu = ivrs_mappings[bd0].iommu; + ivrs_mappings[sbdf.bdf].iommu = ivrs_mappings[bd0].iommu; } } - return ivrs_mappings[bdf].iommu; + return ivrs_mappings[sbdf.bdf].iommu; } /* @@ -107,7 +107,7 @@ static bool any_pdev_behind_iommu(const struct domain *d, if ( pdev == exclude ) continue; - if ( find_iommu_for_device(pdev->seg, pdev->sbdf.bdf) == iommu ) + if ( find_iommu_for_device(pdev->sbdf) == iommu ) return true; } @@ -468,7 +468,7 @@ static int cf_check reassign_device( struct amd_iommu *iommu; int rc; - iommu = find_iommu_for_device(pdev->seg, pdev->sbdf.bdf); + iommu = find_iommu_for_device(pdev->sbdf); if ( !iommu ) { AMD_IOMMU_WARN("failed to find IOMMU: %pp cannot be assigned to %pd\n", @@ -578,10 +578,10 @@ static int cf_check amd_iommu_add_device(u8 devfn, struct pci_dev *pdev) return -EINVAL; for_each_amd_iommu(iommu) - if ( pdev->seg == iommu->seg && pdev->sbdf.bdf == iommu->bdf ) + if ( pdev->sbdf.sbdf == iommu->sbdf.sbdf ) return is_hardware_domain(pdev->domain) ? 0 : -ENODEV; - iommu = find_iommu_for_device(pdev->seg, pdev->sbdf.bdf); + iommu = find_iommu_for_device(pdev->sbdf); if ( unlikely(!iommu) ) { /* Filter bridge devices. */ @@ -666,7 +666,7 @@ static int cf_check amd_iommu_remove_device(u8 devfn, struct pci_dev *pdev) if ( !pdev->domain ) return -EINVAL; - iommu = find_iommu_for_device(pdev->seg, pdev->sbdf.bdf); + iommu = find_iommu_for_device(pdev->sbdf); if ( !iommu ) { AMD_IOMMU_WARN("failed to find IOMMU: %pp cannot be removed from %pd\n", -- 2.48.1
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