diff options
Diffstat (limited to 'arch/powerpc/platforms/pseries/setup.c')
| -rw-r--r-- | arch/powerpc/platforms/pseries/setup.c | 53 |
1 files changed, 43 insertions, 10 deletions
diff --git a/arch/powerpc/platforms/pseries/setup.c b/arch/powerpc/platforms/pseries/setup.c index 139f0af6c3d9..ba1791fd3234 100644 --- a/arch/powerpc/platforms/pseries/setup.c +++ b/arch/powerpc/platforms/pseries/setup.c @@ -41,6 +41,7 @@ #include <linux/root_dev.h> #include <linux/of.h> #include <linux/of_pci.h> +#include <linux/memblock.h> #include <asm/mmu.h> #include <asm/processor.h> @@ -69,8 +70,10 @@ #include <asm/kexec.h> #include <asm/isa-bridge.h> #include <asm/security_features.h> +#include <asm/asm-const.h> #include "pseries.h" +#include "../../../../drivers/pci/pci.h" int CMO_PrPSP = -1; int CMO_SecPSP = -1; @@ -101,6 +104,9 @@ static void pSeries_show_cpuinfo(struct seq_file *m) static void __init fwnmi_init(void) { unsigned long system_reset_addr, machine_check_addr; + u8 *mce_data_buf; + unsigned int i; + int nr_cpus = num_possible_cpus(); int ibm_nmi_register = rtas_token("ibm,nmi-register"); if (ibm_nmi_register == RTAS_UNKNOWN_SERVICE) @@ -114,6 +120,18 @@ static void __init fwnmi_init(void) if (0 == rtas_call(ibm_nmi_register, 2, 1, NULL, system_reset_addr, machine_check_addr)) fwnmi_active = 1; + + /* + * Allocate a chunk for per cpu buffer to hold rtas errorlog. + * It will be used in real mode mce handler, hence it needs to be + * below RMA. + */ + mce_data_buf = __va(memblock_alloc_base(RTAS_ERROR_LOG_MAX * nr_cpus, + RTAS_ERROR_LOG_MAX, ppc64_rma_size)); + for_each_possible_cpu(i) { + paca_ptrs[i]->mce_data_buf = mce_data_buf + + (RTAS_ERROR_LOG_MAX * i); + } } static void pseries_8259_cascade(struct irq_desc *desc) @@ -484,6 +502,12 @@ static void init_cpu_char_feature_flags(struct h_cpu_char_result *result) if (result->character & H_CPU_CHAR_COUNT_CACHE_DISABLED) security_ftr_set(SEC_FTR_COUNT_CACHE_DISABLED); + if (result->character & H_CPU_CHAR_BCCTR_FLUSH_ASSIST) + security_ftr_set(SEC_FTR_BCCTR_FLUSH_ASSIST); + + if (result->behaviour & H_CPU_BEHAV_FLUSH_COUNT_CACHE) + security_ftr_set(SEC_FTR_FLUSH_COUNT_CACHE); + /* * The features below are enabled by default, so we instead look to see * if firmware has *disabled* them, and clear them if so. @@ -534,7 +558,7 @@ void pseries_setup_rfi_flush(void) security_ftr_enabled(SEC_FTR_L1D_FLUSH_PR); setup_rfi_flush(types, enable); - setup_barrier_nospec(); + setup_count_cache_flush(); } #ifdef CONFIG_PCI_IOV @@ -646,6 +670,15 @@ void of_pci_parse_iov_addrs(struct pci_dev *dev, const int *indexes) } } +static void pseries_disable_sriov_resources(struct pci_dev *pdev) +{ + int i; + + pci_warn(pdev, "No hypervisor support for SR-IOV on this device, IOV BARs disabled.\n"); + for (i = 0; i < PCI_SRIOV_NUM_BARS; i++) + pdev->resource[i + PCI_IOV_RESOURCES].flags = 0; +} + static void pseries_pci_fixup_resources(struct pci_dev *pdev) { const int *indexes; @@ -653,10 +686,10 @@ static void pseries_pci_fixup_resources(struct pci_dev *pdev) /*Firmware must support open sriov otherwise dont configure*/ indexes = of_get_property(dn, "ibm,open-sriov-vf-bar-info", NULL); - if (!indexes) - return; - /* Assign the addresses from device tree*/ - of_pci_set_vf_bar_size(pdev, indexes); + if (indexes) + of_pci_set_vf_bar_size(pdev, indexes); + else + pseries_disable_sriov_resources(pdev); } static void pseries_pci_fixup_iov_resources(struct pci_dev *pdev) @@ -664,14 +697,14 @@ static void pseries_pci_fixup_iov_resources(struct pci_dev *pdev) const int *indexes; struct device_node *dn = pci_device_to_OF_node(pdev); - if (!pdev->is_physfn || pdev->is_added) + if (!pdev->is_physfn || pci_dev_is_added(pdev)) return; /*Firmware must support open sriov otherwise dont configure*/ indexes = of_get_property(dn, "ibm,open-sriov-vf-bar-info", NULL); - if (!indexes) - return; - /* Assign the addresses from device tree*/ - of_pci_parse_iov_addrs(pdev, indexes); + if (indexes) + of_pci_parse_iov_addrs(pdev, indexes); + else + pseries_disable_sriov_resources(pdev); } static resource_size_t pseries_pci_iov_resource_alignment(struct pci_dev *pdev, |