forked from Minki/linux
iommu: Move IOMMU specific code to intel-iommu.c
Move the IOMMU specific routines to intel-iommu.c leaving the dmar.c to the common ACPI dmar code shared between DMA-remapping and Interrupt-remapping. Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com> Cc: yinghai@kernel.org Cc: youquan.song@intel.com Cc: joerg.roedel@amd.com Cc: tony.luck@intel.com Cc: dwmw2@infradead.org Link: http://lkml.kernel.org/r/20110824001456.282401285@sbsiddha-desk.sc.intel.com Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Suresh Siddha
Ingo Molnar
parent
c2c7286ac6
commit
318fe7df9d
@ -118,8 +118,8 @@ static int __init dmar_parse_one_dev_scope(struct acpi_dmar_device_scope *scope,
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return 0;
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}
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static int __init dmar_parse_dev_scope(void *start, void *end, int *cnt,
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struct pci_dev ***devices, u16 segment)
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int __init dmar_parse_dev_scope(void *start, void *end, int *cnt,
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struct pci_dev ***devices, u16 segment)
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{
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struct acpi_dmar_device_scope *scope;
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void * tmp = start;
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@ -217,133 +217,6 @@ static int __init dmar_parse_dev(struct dmar_drhd_unit *dmaru)
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return ret;
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}
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#ifdef CONFIG_DMAR
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LIST_HEAD(dmar_rmrr_units);
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static void __init dmar_register_rmrr_unit(struct dmar_rmrr_unit *rmrr)
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{
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list_add(&rmrr->list, &dmar_rmrr_units);
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}
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static int __init
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dmar_parse_one_rmrr(struct acpi_dmar_header *header)
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{
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struct acpi_dmar_reserved_memory *rmrr;
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struct dmar_rmrr_unit *rmrru;
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rmrru = kzalloc(sizeof(*rmrru), GFP_KERNEL);
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if (!rmrru)
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return -ENOMEM;
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rmrru->hdr = header;
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rmrr = (struct acpi_dmar_reserved_memory *)header;
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rmrru->base_address = rmrr->base_address;
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rmrru->end_address = rmrr->end_address;
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dmar_register_rmrr_unit(rmrru);
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return 0;
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}
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static int __init
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rmrr_parse_dev(struct dmar_rmrr_unit *rmrru)
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{
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struct acpi_dmar_reserved_memory *rmrr;
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int ret;
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rmrr = (struct acpi_dmar_reserved_memory *) rmrru->hdr;
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ret = dmar_parse_dev_scope((void *)(rmrr + 1),
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((void *)rmrr) + rmrr->header.length,
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&rmrru->devices_cnt, &rmrru->devices, rmrr->segment);
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if (ret || (rmrru->devices_cnt == 0)) {
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list_del(&rmrru->list);
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kfree(rmrru);
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}
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return ret;
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}
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static LIST_HEAD(dmar_atsr_units);
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static int __init dmar_parse_one_atsr(struct acpi_dmar_header *hdr)
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{
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struct acpi_dmar_atsr *atsr;
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struct dmar_atsr_unit *atsru;
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atsr = container_of(hdr, struct acpi_dmar_atsr, header);
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atsru = kzalloc(sizeof(*atsru), GFP_KERNEL);
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if (!atsru)
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return -ENOMEM;
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atsru->hdr = hdr;
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atsru->include_all = atsr->flags & 0x1;
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list_add(&atsru->list, &dmar_atsr_units);
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return 0;
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}
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static int __init atsr_parse_dev(struct dmar_atsr_unit *atsru)
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{
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int rc;
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struct acpi_dmar_atsr *atsr;
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if (atsru->include_all)
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return 0;
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atsr = container_of(atsru->hdr, struct acpi_dmar_atsr, header);
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rc = dmar_parse_dev_scope((void *)(atsr + 1),
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(void *)atsr + atsr->header.length,
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&atsru->devices_cnt, &atsru->devices,
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atsr->segment);
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if (rc || !atsru->devices_cnt) {
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list_del(&atsru->list);
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kfree(atsru);
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}
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return rc;
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}
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int dmar_find_matched_atsr_unit(struct pci_dev *dev)
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{
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int i;
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struct pci_bus *bus;
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struct acpi_dmar_atsr *atsr;
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struct dmar_atsr_unit *atsru;
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dev = pci_physfn(dev);
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list_for_each_entry(atsru, &dmar_atsr_units, list) {
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atsr = container_of(atsru->hdr, struct acpi_dmar_atsr, header);
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if (atsr->segment == pci_domain_nr(dev->bus))
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goto found;
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}
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return 0;
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found:
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for (bus = dev->bus; bus; bus = bus->parent) {
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struct pci_dev *bridge = bus->self;
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if (!bridge || !pci_is_pcie(bridge) ||
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bridge->pcie_type == PCI_EXP_TYPE_PCI_BRIDGE)
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return 0;
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if (bridge->pcie_type == PCI_EXP_TYPE_ROOT_PORT) {
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for (i = 0; i < atsru->devices_cnt; i++)
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if (atsru->devices[i] == bridge)
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return 1;
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break;
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}
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}
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if (atsru->include_all)
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return 1;
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return 0;
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}
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#endif
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#ifdef CONFIG_ACPI_NUMA
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static int __init
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dmar_parse_one_rhsa(struct acpi_dmar_header *header)
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@ -484,14 +357,10 @@ parse_dmar_table(void)
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ret = dmar_parse_one_drhd(entry_header);
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break;
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case ACPI_DMAR_TYPE_RESERVED_MEMORY:
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#ifdef CONFIG_DMAR
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ret = dmar_parse_one_rmrr(entry_header);
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#endif
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break;
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case ACPI_DMAR_TYPE_ATSR:
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#ifdef CONFIG_DMAR
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ret = dmar_parse_one_atsr(entry_header);
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#endif
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break;
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case ACPI_DMAR_HARDWARE_AFFINITY:
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#ifdef CONFIG_ACPI_NUMA
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@ -564,30 +433,18 @@ int __init dmar_dev_scope_init(void)
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if (dmar_dev_scope_initialized)
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return dmar_dev_scope_initialized;
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if (list_empty(&dmar_drhd_units))
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goto fail;
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list_for_each_entry_safe(drhd, drhd_n, &dmar_drhd_units, list) {
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ret = dmar_parse_dev(drhd);
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if (ret)
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goto fail;
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}
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#ifdef CONFIG_DMAR
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{
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struct dmar_rmrr_unit *rmrr, *rmrr_n;
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struct dmar_atsr_unit *atsr, *atsr_n;
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list_for_each_entry_safe(rmrr, rmrr_n, &dmar_rmrr_units, list) {
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ret = rmrr_parse_dev(rmrr);
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if (ret)
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goto fail;
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}
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list_for_each_entry_safe(atsr, atsr_n, &dmar_atsr_units, list) {
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ret = atsr_parse_dev(atsr);
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if (ret)
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goto fail;
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}
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}
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#endif
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ret = dmar_parse_rmrr_atsr_dev();
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if (ret)
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goto fail;
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dmar_dev_scope_initialized = 1;
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return 0;
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@ -620,14 +477,6 @@ int __init dmar_table_init(void)
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return -ENODEV;
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}
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#ifdef CONFIG_DMAR
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if (list_empty(&dmar_rmrr_units))
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printk(KERN_INFO PREFIX "No RMRR found\n");
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if (list_empty(&dmar_atsr_units))
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printk(KERN_INFO PREFIX "No ATSR found\n");
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#endif
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return 0;
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}
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@ -767,7 +616,6 @@ int alloc_iommu(struct dmar_drhd_unit *drhd)
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goto err_unmap;
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}
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#ifdef CONFIG_DMAR
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agaw = iommu_calculate_agaw(iommu);
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if (agaw < 0) {
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printk(KERN_ERR
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@ -782,7 +630,6 @@ int alloc_iommu(struct dmar_drhd_unit *drhd)
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iommu->seq_id);
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goto err_unmap;
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}
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#endif
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iommu->agaw = agaw;
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iommu->msagaw = msagaw;
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@ -826,9 +673,7 @@ void free_iommu(struct intel_iommu *iommu)
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if (!iommu)
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return;
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#ifdef CONFIG_DMAR
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free_dmar_iommu(iommu);
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#endif
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if (iommu->reg)
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iounmap(iommu->reg);
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@ -3390,6 +3390,151 @@ static void __init init_iommu_pm_ops(void)
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static inline void init_iommu_pm_ops(void) {}
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#endif /* CONFIG_PM */
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LIST_HEAD(dmar_rmrr_units);
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static void __init dmar_register_rmrr_unit(struct dmar_rmrr_unit *rmrr)
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{
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list_add(&rmrr->list, &dmar_rmrr_units);
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}
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int __init dmar_parse_one_rmrr(struct acpi_dmar_header *header)
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{
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struct acpi_dmar_reserved_memory *rmrr;
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struct dmar_rmrr_unit *rmrru;
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rmrru = kzalloc(sizeof(*rmrru), GFP_KERNEL);
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if (!rmrru)
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return -ENOMEM;
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rmrru->hdr = header;
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rmrr = (struct acpi_dmar_reserved_memory *)header;
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rmrru->base_address = rmrr->base_address;
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rmrru->end_address = rmrr->end_address;
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dmar_register_rmrr_unit(rmrru);
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return 0;
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}
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static int __init
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rmrr_parse_dev(struct dmar_rmrr_unit *rmrru)
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{
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struct acpi_dmar_reserved_memory *rmrr;
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int ret;
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rmrr = (struct acpi_dmar_reserved_memory *) rmrru->hdr;
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ret = dmar_parse_dev_scope((void *)(rmrr + 1),
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((void *)rmrr) + rmrr->header.length,
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&rmrru->devices_cnt, &rmrru->devices, rmrr->segment);
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if (ret || (rmrru->devices_cnt == 0)) {
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list_del(&rmrru->list);
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kfree(rmrru);
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}
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return ret;
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}
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static LIST_HEAD(dmar_atsr_units);
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int __init dmar_parse_one_atsr(struct acpi_dmar_header *hdr)
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{
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struct acpi_dmar_atsr *atsr;
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struct dmar_atsr_unit *atsru;
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atsr = container_of(hdr, struct acpi_dmar_atsr, header);
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atsru = kzalloc(sizeof(*atsru), GFP_KERNEL);
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if (!atsru)
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return -ENOMEM;
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atsru->hdr = hdr;
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atsru->include_all = atsr->flags & 0x1;
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list_add(&atsru->list, &dmar_atsr_units);
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return 0;
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}
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static int __init atsr_parse_dev(struct dmar_atsr_unit *atsru)
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{
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int rc;
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struct acpi_dmar_atsr *atsr;
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if (atsru->include_all)
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return 0;
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atsr = container_of(atsru->hdr, struct acpi_dmar_atsr, header);
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rc = dmar_parse_dev_scope((void *)(atsr + 1),
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(void *)atsr + atsr->header.length,
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&atsru->devices_cnt, &atsru->devices,
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atsr->segment);
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if (rc || !atsru->devices_cnt) {
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list_del(&atsru->list);
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kfree(atsru);
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}
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return rc;
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}
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int dmar_find_matched_atsr_unit(struct pci_dev *dev)
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{
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int i;
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struct pci_bus *bus;
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struct acpi_dmar_atsr *atsr;
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struct dmar_atsr_unit *atsru;
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dev = pci_physfn(dev);
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list_for_each_entry(atsru, &dmar_atsr_units, list) {
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atsr = container_of(atsru->hdr, struct acpi_dmar_atsr, header);
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if (atsr->segment == pci_domain_nr(dev->bus))
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goto found;
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}
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return 0;
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found:
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for (bus = dev->bus; bus; bus = bus->parent) {
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struct pci_dev *bridge = bus->self;
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if (!bridge || !pci_is_pcie(bridge) ||
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bridge->pcie_type == PCI_EXP_TYPE_PCI_BRIDGE)
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return 0;
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if (bridge->pcie_type == PCI_EXP_TYPE_ROOT_PORT) {
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for (i = 0; i < atsru->devices_cnt; i++)
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if (atsru->devices[i] == bridge)
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return 1;
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break;
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}
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}
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if (atsru->include_all)
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return 1;
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return 0;
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}
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int dmar_parse_rmrr_atsr_dev(void)
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{
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struct dmar_rmrr_unit *rmrr, *rmrr_n;
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struct dmar_atsr_unit *atsr, *atsr_n;
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int ret = 0;
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list_for_each_entry_safe(rmrr, rmrr_n, &dmar_rmrr_units, list) {
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ret = rmrr_parse_dev(rmrr);
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if (ret)
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return ret;
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}
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list_for_each_entry_safe(atsr, atsr_n, &dmar_atsr_units, list) {
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ret = atsr_parse_dev(atsr);
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if (ret)
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return ret;
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}
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return ret;
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}
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/*
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* Here we only respond to action of unbound device from driver.
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*
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@ -3454,6 +3599,12 @@ int __init intel_iommu_init(void)
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return -ENODEV;
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}
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if (list_empty(&dmar_rmrr_units))
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printk(KERN_INFO "DMAR: No RMRR found\n");
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if (list_empty(&dmar_atsr_units))
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printk(KERN_INFO "DMAR: No ATSR found\n");
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if (dmar_init_reserved_ranges()) {
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if (force_on)
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panic("tboot: Failed to reserve iommu ranges\n");
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@ -25,9 +25,9 @@ struct intel_iommu;
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struct dmar_domain;
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struct root_entry;
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extern void free_dmar_iommu(struct intel_iommu *iommu);
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#ifdef CONFIG_DMAR
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extern void free_dmar_iommu(struct intel_iommu *iommu);
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extern int iommu_calculate_agaw(struct intel_iommu *iommu);
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extern int iommu_calculate_max_sagaw(struct intel_iommu *iommu);
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#else
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@ -39,6 +39,9 @@ static inline int iommu_calculate_max_sagaw(struct intel_iommu *iommu)
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{
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return 0;
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}
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static inline void free_dmar_iommu(struct intel_iommu *iommu)
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{
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}
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#endif
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extern int dmar_disabled;
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@ -237,9 +237,26 @@ struct dmar_atsr_unit {
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u8 include_all:1; /* include all ports */
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};
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int dmar_parse_rmrr_atsr_dev(void);
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extern int dmar_parse_one_rmrr(struct acpi_dmar_header *header);
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extern int dmar_parse_one_atsr(struct acpi_dmar_header *header);
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extern int dmar_parse_dev_scope(void *start, void *end, int *cnt,
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struct pci_dev ***devices, u16 segment);
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extern int intel_iommu_init(void);
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#else /* !CONFIG_DMAR: */
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static inline int intel_iommu_init(void) { return -ENODEV; }
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static inline int dmar_parse_one_rmrr(struct acpi_dmar_header *header)
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{
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return 0;
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}
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static inline int dmar_parse_one_atsr(struct acpi_dmar_header *header)
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{
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return 0;
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}
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static inline int dmar_parse_rmrr_atsr_dev(void)
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{
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return 0;
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}
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#endif /* CONFIG_DMAR */
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#endif /* __DMAR_H__ */
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