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
47 #include <asm/rtas.h>
48 #include <asm/pci-bridge.h>
58 #include <asm/ppc-pci.h>
67 #include <asm/isa-bridge.h>
69 #include <asm/asm-const.h>
81 int CMO_PrPSP = -1;
82 int CMO_SecPSP = -1;
105 /* Initialize firmware assisted non-maskable interrupts if
120 	ibm_nmi_register_token = rtas_token("ibm,nmi-register");  in fwnmi_init()
124 	ibm_nmi_interlock_token = rtas_token("ibm,nmi-interlock");  in fwnmi_init()
130 	system_reset_addr  = __pa(system_reset_fwnmi) - PHYSICAL_START;  in fwnmi_init()
131 	machine_check_addr = __pa(machine_check_fwnmi) - PHYSICAL_START;  in fwnmi_init()
138 	 * Allocate a chunk for per cpu buffer to hold rtas errorlog.  in fwnmi_init()
139 	 * It will be used in real mode mce handler, hence it needs to be  in fwnmi_init()
150 		paca_ptrs[i]->mce_data_buf = mce_data_buf +  in fwnmi_init()
166 			paca_ptrs[i]->mce_faulty_slbs = slb_ptr + (mmu_slb_size * i);  in fwnmi_init()
179 	chip->irq_eoi(&desc->irq_data);  in pseries_8259_cascade()
190 	for_each_node_by_type(np, "interrupt-controller") {  in pseries_setup_i8259_cascade()
216 		addrp = of_get_property(np, "8259-interrupt-acknowledge", NULL);  in pseries_setup_i8259_cascade()
220 		intack = addrp[naddr-1];  in pseries_setup_i8259_cascade()
222 			intack |= ((unsigned long)addrp[naddr-2]) << 32;  in pseries_setup_i8259_cascade()
252 	struct device_node *parent, *np = rd->dn;  in pci_dn_reconfig_notifier()
261 			pci_add_device_node_info(pdn->phb, np);  in pci_dn_reconfig_notifier()
268 			list_del(&pdn->list);  in pci_dn_reconfig_notifier()
286  * and register the buffers with the hypervisor.  This is used for
287  * computing time stolen by the hypervisor.
334 	 * low power mode by ceding processor to hypervisor  in pseries_lpar_idle()
358  * just give up rather than wasting any more time on this - if that turns out
483 		phb->controller_ops = pseries_pci_controller_ops;  in find_and_init_phbs()
498 	 * The features below are disabled by default, so we instead look to see  in init_cpu_char_feature_flags()
501 	if (result->character & H_CPU_CHAR_SPEC_BAR_ORI31)  in init_cpu_char_feature_flags()
504 	if (result->character & H_CPU_CHAR_BCCTRL_SERIALISED)  in init_cpu_char_feature_flags()
507 	if (result->character & H_CPU_CHAR_L1D_FLUSH_ORI30)  in init_cpu_char_feature_flags()
510 	if (result->character & H_CPU_CHAR_L1D_FLUSH_TRIG2)  in init_cpu_char_feature_flags()
513 	if (result->character & H_CPU_CHAR_L1D_THREAD_PRIV)  in init_cpu_char_feature_flags()
516 	if (result->character & H_CPU_CHAR_COUNT_CACHE_DISABLED)  in init_cpu_char_feature_flags()
519 	if (result->character & H_CPU_CHAR_BCCTR_FLUSH_ASSIST)  in init_cpu_char_feature_flags()
522 	if (result->character & H_CPU_CHAR_BCCTR_LINK_FLUSH_ASSIST)  in init_cpu_char_feature_flags()
525 	if (result->behaviour & H_CPU_BEHAV_FLUSH_COUNT_CACHE)  in init_cpu_char_feature_flags()
528 	if (result->behaviour & H_CPU_BEHAV_FLUSH_LINK_STACK)  in init_cpu_char_feature_flags()
532 	 * The features below are enabled by default, so we instead look to see  in init_cpu_char_feature_flags()
535 	if (!(result->behaviour & H_CPU_BEHAV_FAVOUR_SECURITY))  in init_cpu_char_feature_flags()
538 	if (!(result->behaviour & H_CPU_BEHAV_L1D_FLUSH_PR))  in init_cpu_char_feature_flags()
541 	if (!(result->behaviour & H_CPU_BEHAV_BNDS_CHK_SPEC_BAR))  in init_cpu_char_feature_flags()
553 	 * Set features to the defaults assumed by init_cpu_char_feature_flags()  in pseries_setup_security_mitigations()
617 	indexes = of_get_property(dn, "ibm,open-sriov-vf-bar-info", NULL);  in pseries_get_iov_fw_value()
656 		res = &dev->resource[r + PCI_IOV_RESOURCES];  in of_pci_set_vf_bar_size()
659 		res->flags = pci_parse_of_flags(of_read_number  in of_pci_set_vf_bar_size()
661 		res->flags |= (IORESOURCE_MEM_64 | IORESOURCE_PCI_FIXED);  in of_pci_set_vf_bar_size()
662 		res->name = pci_name(dev);  in of_pci_set_vf_bar_size()
663 		res->start = base;  in of_pci_set_vf_bar_size()
664 		res->end = base + size - 1;  in of_pci_set_vf_bar_size()
682 		res = &dev->resource[r + PCI_IOV_RESOURCES];  in of_pci_parse_iov_addrs()
685 		res->name = pci_name(dev);  in of_pci_parse_iov_addrs()
686 		res->start = base;  in of_pci_parse_iov_addrs()
687 		res->end = base + size - 1;  in of_pci_parse_iov_addrs()
689 		dev_dbg(&dev->dev,  in of_pci_parse_iov_addrs()
694 			dev_info(&dev->dev,  in of_pci_parse_iov_addrs()
697 				 conflict->name, conflict);  in of_pci_parse_iov_addrs()
698 			res->flags |= IORESOURCE_UNSET;  in of_pci_parse_iov_addrs()
707 	pci_warn(pdev, "No hypervisor support for SR-IOV on this device, IOV BARs disabled.\n");  in pseries_disable_sriov_resources()
709 		pdev->resource[i + PCI_IOV_RESOURCES].flags = 0;  in pseries_disable_sriov_resources()
718 	indexes = of_get_property(dn, "ibm,open-sriov-vf-bar-info", NULL);  in pseries_pci_fixup_resources()
730 	if (!pdev->is_physfn || pci_dev_is_added(pdev))  in pseries_pci_fixup_iov_resources()
733 	indexes = of_get_property(dn, "ibm,open-sriov-vf-bar-info", NULL);  in pseries_pci_fixup_iov_resources()
747 	reg = of_get_property(dn, "ibm,is-open-sriov-pf", NULL);  in pseries_pci_iov_resource_alignment()
751 	if (!pdev->is_physfn)  in pseries_pci_iov_resource_alignment()
754 					resno - PCI_IOV_RESOURCES,  in pseries_pci_iov_resource_alignment()
772 	/* openpic global configuration register (64-bit format). */  in pSeries_setup_arch()
773 	/* openpic Interrupt Source Unit pointer (64-bit format). */  in pSeries_setup_arch()
774 	/* python0 facility area (mmio) (64-bit format) REAL address. */  in pSeries_setup_arch()
784 	/* By default, only probe PCI (can be overridden by rtas_pci) */  in pSeries_setup_arch()
837 	ppc_md.progress(init_utsname()->version, 0);  in pSeries_init_panel()
884  * fw_cmo_feature_init - FW_FEATURE_CMO is not stored in ibm,hypertas-functions,
893 	pr_debug(" -> fw_cmo_feature_init()\n");  in pSeries_cmo_feature_init()
896 	call_status = rtas_call(rtas_token("ibm,get-system-parameter"), 3, 1,  in pSeries_cmo_feature_init()
905 		pr_debug(" <- fw_cmo_feature_init()\n");  in pSeries_cmo_feature_init()
909 	end = rtas_data_buf + CMO_MAXLENGTH - 2;  in pSeries_cmo_feature_init()
914 		/* Separate the key and value by replacing '=' with '\0' and  in pSeries_cmo_feature_init()
947 	if (CMO_PrPSP != -1 || CMO_SecPSP != -1) {  in pSeries_cmo_feature_init()
957 	pr_debug(" <- fw_cmo_feature_init()\n");  in pSeries_cmo_feature_init()
965 	pr_debug(" -> pseries_init()\n");  in pseries_init()
982 	pr_debug(" <- pseries_init()\n");  in pseries_init()
986  * pseries_power_off - tell firmware about how to power off the system.
988  * This function calls either the power-off rtas token in normal cases
989  * or the ibm,power-off-ups token (if present & requested) in case of
990  * a power failure. If power-off token is used, power on will only be
991  * possible with power button press. If ibm,power-off-ups token is used
997 	int rtas_poweroff_ups_token = rtas_token("ibm,power-off-ups");  in pseries_power_off()
1004 		rc = rtas_call(rtas_token("power-off"), 2, 1, NULL, -1, -1);  in pseries_power_off()
1005 		printk(KERN_INFO "RTAS power-off returned %d\n", rc);  in pseries_power_off()
1008 		printk(KERN_INFO "RTAS ibm,power-off-ups returned %d\n", rc);  in pseries_power_off()
1021 	if (of_machine_is_compatible("IBM,CPBW-1.0") ||  in pSeries_probe()