1 // SPDX-License-Identifier: GPL-2.0-or-later
3  *  64-bit pSeries and RS/6000 setup code.
6  *  Adapted from 'alpha' version by Gary Thomas
7  *  Modified by Cort Dougan (cort@cs.nmt.edu)
8  *  Modified by PPC64 Team, IBM Corp
49 #include <asm/rtas.h>
50 #include <asm/pci-bridge.h>
60 #include <asm/papr-sysparm.h>
61 #include <asm/ppc-pci.h>
70 #include <asm/isa-bridge.h>
72 #include <asm/asm-const.h>
96 early_param("no-steal-acc", parse_no_stealacc);
99 int CMO_PrPSP = -1;
100 int CMO_SecPSP = -1;
124 /* Initialize firmware assisted non-maskable interrupts if
149 	system_reset_addr  = __pa(system_reset_fwnmi) - PHYSICAL_START;  in fwnmi_init()
150 	machine_check_addr = __pa(machine_check_fwnmi) - PHYSICAL_START;  in fwnmi_init()
157 	 * Allocate a chunk for per cpu buffer to hold rtas errorlog.  in fwnmi_init()
158 	 * It will be used in real mode mce handler, hence it needs to be  in fwnmi_init()
169 		paca_ptrs[i]->mce_data_buf = mce_data_buf +  in fwnmi_init()
185 			paca_ptrs[i]->mce_faulty_slbs = slb_ptr + (mmu_slb_size * i);  in fwnmi_init()
197 		platform_device_register_simple("pseries-wdt", 0, NULL, 0);  in pseries_wdt_init()
210 	chip->irq_eoi(&desc->irq_data);  in pseries_8259_cascade()
221 	for_each_node_by_type(np, "interrupt-controller") {  in pseries_setup_i8259_cascade()
247 		addrp = of_get_property(np, "8259-interrupt-acknowledge", NULL);  in pseries_setup_i8259_cascade()
251 		intack = addrp[naddr-1];  in pseries_setup_i8259_cascade()
253 			intack |= ((unsigned long)addrp[naddr-2]) << 32;  in pseries_setup_i8259_cascade()
283 	struct device_node *parent, *np = rd->dn;  in pci_dn_reconfig_notifier()
292 			pci_add_device_node_info(pdn->phb, np);  in pci_dn_reconfig_notifier()
299 			list_del(&pdn->list);  in pci_dn_reconfig_notifier()
317  * and register the buffers with the hypervisor.  This is used for
318  * computing time stolen by the hypervisor.
365 	 * low power mode by ceding processor to hypervisor  in pseries_lpar_idle()
397  * just give up rather than wasting any more time on this - if that turns out
515 		phb->controller_ops = pseries_pci_controller_ops;  in pSeries_discover_phbs()
535 	 * The features below are disabled by default, so we instead look to see  in init_cpu_char_feature_flags()
538 	if (result->character & H_CPU_CHAR_SPEC_BAR_ORI31)  in init_cpu_char_feature_flags()
541 	if (result->character & H_CPU_CHAR_BCCTRL_SERIALISED)  in init_cpu_char_feature_flags()
544 	if (result->character & H_CPU_CHAR_L1D_FLUSH_ORI30)  in init_cpu_char_feature_flags()
547 	if (result->character & H_CPU_CHAR_L1D_FLUSH_TRIG2)  in init_cpu_char_feature_flags()
550 	if (result->character & H_CPU_CHAR_L1D_THREAD_PRIV)  in init_cpu_char_feature_flags()
553 	if (result->character & H_CPU_CHAR_COUNT_CACHE_DISABLED)  in init_cpu_char_feature_flags()
556 	if (result->character & H_CPU_CHAR_BCCTR_FLUSH_ASSIST)  in init_cpu_char_feature_flags()
559 	if (result->character & H_CPU_CHAR_BCCTR_LINK_FLUSH_ASSIST)  in init_cpu_char_feature_flags()
562 	if (result->behaviour & H_CPU_BEHAV_FLUSH_COUNT_CACHE)  in init_cpu_char_feature_flags()
565 	if (result->behaviour & H_CPU_BEHAV_FLUSH_LINK_STACK)  in init_cpu_char_feature_flags()
569 	 * The features below are enabled by default, so we instead look to see  in init_cpu_char_feature_flags()
574 	if (!(result->behaviour & H_CPU_BEHAV_FAVOUR_SECURITY)) {  in init_cpu_char_feature_flags()
577 	} else if (result->behaviour & H_CPU_BEHAV_FAVOUR_SECURITY_H)  in init_cpu_char_feature_flags()
582 	if (!(result->behaviour & H_CPU_BEHAV_L1D_FLUSH_PR))  in init_cpu_char_feature_flags()
585 	if (result->behaviour & H_CPU_BEHAV_NO_L1D_FLUSH_ENTRY)  in init_cpu_char_feature_flags()
588 	if (result->behaviour & H_CPU_BEHAV_NO_L1D_FLUSH_UACCESS)  in init_cpu_char_feature_flags()
591 	if (result->behaviour & H_CPU_BEHAV_NO_STF_BARRIER)  in init_cpu_char_feature_flags()
594 	if (!(result->behaviour & H_CPU_BEHAV_BNDS_CHK_SPEC_BAR))  in init_cpu_char_feature_flags()
606 	 * Set features to the defaults assumed by init_cpu_char_feature_flags()  in pseries_setup_security_mitigations()
670 	indexes = of_get_property(dn, "ibm,open-sriov-vf-bar-info", NULL);  in pseries_get_iov_fw_value()
709 		res = &dev->resource[r + PCI_IOV_RESOURCES];  in of_pci_set_vf_bar_size()
712 		res->flags = pci_parse_of_flags(of_read_number  in of_pci_set_vf_bar_size()
714 		res->flags |= (IORESOURCE_MEM_64 | IORESOURCE_PCI_FIXED);  in of_pci_set_vf_bar_size()
715 		res->name = pci_name(dev);  in of_pci_set_vf_bar_size()
716 		res->start = base;  in of_pci_set_vf_bar_size()
717 		res->end = base + size - 1;  in of_pci_set_vf_bar_size()
735 		res = &dev->resource[r + PCI_IOV_RESOURCES];  in of_pci_parse_iov_addrs()
738 		res->name = pci_name(dev);  in of_pci_parse_iov_addrs()
739 		res->start = base;  in of_pci_parse_iov_addrs()
740 		res->end = base + size - 1;  in of_pci_parse_iov_addrs()
742 		dev_dbg(&dev->dev,  in of_pci_parse_iov_addrs()
747 			dev_info(&dev->dev,  in of_pci_parse_iov_addrs()
750 				 conflict->name, conflict);  in of_pci_parse_iov_addrs()
751 			res->flags |= IORESOURCE_UNSET;  in of_pci_parse_iov_addrs()
760 	pci_warn(pdev, "No hypervisor support for SR-IOV on this device, IOV BARs disabled.\n");  in pseries_disable_sriov_resources()
762 		pdev->resource[i + PCI_IOV_RESOURCES].flags = 0;  in pseries_disable_sriov_resources()
771 	indexes = of_get_property(dn, "ibm,open-sriov-vf-bar-info", NULL);  in pseries_pci_fixup_resources()
783 	if (!pdev->is_physfn)  in pseries_pci_fixup_iov_resources()
786 	indexes = of_get_property(dn, "ibm,open-sriov-vf-bar-info", NULL);  in pseries_pci_fixup_iov_resources()
800 	reg = of_get_property(dn, "ibm,is-open-sriov-pf", NULL);  in pseries_pci_iov_resource_alignment()
804 	if (!pdev->is_physfn)  in pseries_pci_iov_resource_alignment()
807 					resno - PCI_IOV_RESOURCES,  in pseries_pci_iov_resource_alignment()
827 	/* openpic global configuration register (64-bit format). */  in pSeries_setup_arch()
828 	/* openpic Interrupt Source Unit pointer (64-bit format). */  in pSeries_setup_arch()
829 	/* python0 facility area (mmio) (64-bit format) REAL address. */  in pSeries_setup_arch()
840 	/* By default, only probe PCI (can be overridden by rtas_pci) */  in pSeries_setup_arch()
895 	ppc_md.progress(init_utsname()->version, 0);  in pSeries_init_panel()
942  * fw_cmo_feature_init - FW_FEATURE_CMO is not stored in ibm,hypertas-functions,
952 	pr_debug(" -> fw_cmo_feature_init()\n");  in pSeries_cmo_feature_init()
956 		pr_debug(" <- fw_cmo_feature_init()\n");  in pSeries_cmo_feature_init()
965 		/* Separate the key and value by replacing '=' with '\0' and  in pSeries_cmo_feature_init()
998 	if (CMO_PrPSP != -1 || CMO_SecPSP != -1) {  in pSeries_cmo_feature_init()
1007 	pr_debug(" <- fw_cmo_feature_init()\n");  in pSeries_cmo_feature_init()
1033 	if (of_property_read_bool(dn, "ibm,powervm-partition") ||  in pseries_add_hw_description()
1034 	    of_property_read_bool(dn, "ibm,fw-net-version"))  in pseries_add_hw_description()
1044 	pr_debug(" -> pseries_init()\n");  in pseries_init()
1063 	pr_debug(" <- pseries_init()\n");  in pseries_init()
1067  * pseries_power_off - tell firmware about how to power off the system.
1069  * This function calls either the power-off rtas token in normal cases
1070  * or the ibm,power-off-ups token (if present & requested) in case of
1071  * a power failure. If power-off token is used, power on will only be
1072  * possible with power button press. If ibm,power-off-ups token is used
1085 		rc = rtas_call(rtas_function_token(RTAS_FN_POWER_OFF), 2, 1, NULL, -1, -1);  in pseries_power_off()
1086 		printk(KERN_INFO "RTAS power-off returned %d\n", rc);  in pseries_power_off()
1089 		printk(KERN_INFO "RTAS ibm,power-off-ups returned %d\n", rc);  in pseries_power_off()
1106 	if (of_machine_is_compatible("IBM,CPBW-1.0") ||  in pSeries_probe()