linux-stable/arch/x86/kernel/devicetree.c
Linus Torvalds dcd68326d2 Devicetree updates for v5.16:
- Convert /reserved-memory bindings to schemas
 
 - Convert a bunch of NFC bindings to schemas
 
 - Convert bindings to schema: Xilinx USB, Freescale DDR controller, Arm
   CCI-400, UBlox Neo-6M, 1-Wire GPIO, MSI controller, ASpeed LPC, OMAP
   and Inside-Secure HWRNG, register-bit-led, OV5640, Silead GSL1680,
   Elan ekth3000, Marvell bluetooth, TI wlcore, TI bluetooth, ESP ESP8089,
   tlm,trusted-foundations, Microchip cap11xx, Ralink SoCs and boards,
   and TI sysc
 
 - New binding schemas for: msi-ranges, Aspeed UART routing controller,
   palmbus, Xylon LogiCVC display controller, Mediatek's MT7621 SDRAM
   memory controller, and Apple M1 PCIe host
 
 - Run schema checks for %.dtb targets
 
 - Improve build time when using DT_SCHEMA_FILES
 
 - Improve error message when dtschema is not found
 
 - Various doc reference fixes in MAINTAINERS
 
 - Convert architectures to common CPU h/w ID parsing function
   of_get_cpu_hwid().
 
 - Allow for empty NUMA node IDs which may be hotplugged
 
 - Cleanup of __fdt_scan_reserved_mem()
 
 - Constify device_node parameters
 
 - Update dtc to upstream v1.6.1-19-g0a3a9d3449c8. Adds new checks
   'node_name_vs_property_name' and 'interrupt_map'.
 
 - Enable dtc 'unit_address_format' warning by default
 
 - Fix unittest EXPECT text for gpio hog errors
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Merge tag 'devicetree-for-5.16' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux

Pull devicetree updates from Rob Herring:

 - Convert /reserved-memory bindings to schemas

 - Convert a bunch of NFC bindings to schemas

 - Convert bindings to schema: Xilinx USB, Freescale DDR controller, Arm
   CCI-400, UBlox Neo-6M, 1-Wire GPIO, MSI controller, ASpeed LPC, OMAP
   and Inside-Secure HWRNG, register-bit-led, OV5640, Silead GSL1680,
   Elan ekth3000, Marvell bluetooth, TI wlcore, TI bluetooth, ESP
   ESP8089, tlm,trusted-foundations, Microchip cap11xx, Ralink SoCs and
   boards, and TI sysc

 - New binding schemas for: msi-ranges, Aspeed UART routing controller,
   palmbus, Xylon LogiCVC display controller, Mediatek's MT7621 SDRAM
   memory controller, and Apple M1 PCIe host

 - Run schema checks for %.dtb targets

 - Improve build time when using DT_SCHEMA_FILES

 - Improve error message when dtschema is not found

 - Various doc reference fixes in MAINTAINERS

 - Convert architectures to common CPU h/w ID parsing function
   of_get_cpu_hwid().

 - Allow for empty NUMA node IDs which may be hotplugged

 - Cleanup of __fdt_scan_reserved_mem()

 - Constify device_node parameters

 - Update dtc to upstream v1.6.1-19-g0a3a9d3449c8. Adds new checks
   'node_name_vs_property_name' and 'interrupt_map'.

 - Enable dtc 'unit_address_format' warning by default

 - Fix unittest EXPECT text for gpio hog errors

* tag 'devicetree-for-5.16' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux: (97 commits)
  dt-bindings: net: ti,bluetooth: Document default max-speed
  dt-bindings: pci: rcar-pci-ep: Document r8a7795
  dt-bindings: net: qcom,ipa: IPA does support up to two iommus
  of/fdt: Remove of_scan_flat_dt() usage for __fdt_scan_reserved_mem()
  of: unittest: document intentional interrupt-map provider build warning
  of: unittest: fix EXPECT text for gpio hog errors
  of/unittest: Disable new dtc node_name_vs_property_name and interrupt_map warnings
  scripts/dtc: Update to upstream version v1.6.1-19-g0a3a9d3449c8
  dt-bindings: arm: firmware: tlm,trusted-foundations: Convert txt bindings to yaml
  dt-bindings: display: tilcd: Fix endpoint addressing in example
  dt-bindings: input: microchip,cap11xx: Convert txt bindings to yaml
  dt-bindings: ufs: exynos-ufs: add exynosautov9 compatible
  dt-bindings: ufs: exynos-ufs: add io-coherency property
  dt-bindings: mips: convert Ralink SoCs and boards to schema
  dt-bindings: display: xilinx: Fix example with psgtr
  dt-bindings: net: nfc: nxp,pn544: Convert txt bindings to yaml
  dt-bindings: Add a help message when dtschema tools are missing
  dt-bindings: bus: ti-sysc: Update to use yaml binding
  dt-bindings: sram: Allow numbers in sram region node name
  dt-bindings: display: Document the Xylon LogiCVC display controller
  ...
2021-11-02 22:22:13 -07:00

319 lines
6.3 KiB
C

// SPDX-License-Identifier: GPL-2.0
/*
* Architecture specific OF callbacks.
*/
#include <linux/export.h>
#include <linux/io.h>
#include <linux/interrupt.h>
#include <linux/list.h>
#include <linux/of.h>
#include <linux/of_fdt.h>
#include <linux/of_address.h>
#include <linux/of_platform.h>
#include <linux/of_irq.h>
#include <linux/libfdt.h>
#include <linux/slab.h>
#include <linux/pci.h>
#include <linux/of_pci.h>
#include <linux/initrd.h>
#include <asm/irqdomain.h>
#include <asm/hpet.h>
#include <asm/apic.h>
#include <asm/io_apic.h>
#include <asm/pci_x86.h>
#include <asm/setup.h>
#include <asm/i8259.h>
#include <asm/prom.h>
__initdata u64 initial_dtb;
char __initdata cmd_line[COMMAND_LINE_SIZE];
int __initdata of_ioapic;
void __init early_init_dt_add_memory_arch(u64 base, u64 size)
{
BUG();
}
void __init add_dtb(u64 data)
{
initial_dtb = data + offsetof(struct setup_data, data);
}
/*
* CE4100 ids. Will be moved to machine_device_initcall() once we have it.
*/
static struct of_device_id __initdata ce4100_ids[] = {
{ .compatible = "intel,ce4100-cp", },
{ .compatible = "isa", },
{ .compatible = "pci", },
{},
};
static int __init add_bus_probe(void)
{
if (!of_have_populated_dt())
return 0;
return of_platform_bus_probe(NULL, ce4100_ids, NULL);
}
device_initcall(add_bus_probe);
#ifdef CONFIG_PCI
struct device_node *pcibios_get_phb_of_node(struct pci_bus *bus)
{
struct device_node *np;
for_each_node_by_type(np, "pci") {
const void *prop;
unsigned int bus_min;
prop = of_get_property(np, "bus-range", NULL);
if (!prop)
continue;
bus_min = be32_to_cpup(prop);
if (bus->number == bus_min)
return np;
}
return NULL;
}
static int x86_of_pci_irq_enable(struct pci_dev *dev)
{
u32 virq;
int ret;
u8 pin;
ret = pci_read_config_byte(dev, PCI_INTERRUPT_PIN, &pin);
if (ret)
return ret;
if (!pin)
return 0;
virq = of_irq_parse_and_map_pci(dev, 0, 0);
if (virq == 0)
return -EINVAL;
dev->irq = virq;
return 0;
}
static void x86_of_pci_irq_disable(struct pci_dev *dev)
{
}
void x86_of_pci_init(void)
{
pcibios_enable_irq = x86_of_pci_irq_enable;
pcibios_disable_irq = x86_of_pci_irq_disable;
}
#endif
static void __init dtb_setup_hpet(void)
{
#ifdef CONFIG_HPET_TIMER
struct device_node *dn;
struct resource r;
int ret;
dn = of_find_compatible_node(NULL, NULL, "intel,ce4100-hpet");
if (!dn)
return;
ret = of_address_to_resource(dn, 0, &r);
if (ret) {
WARN_ON(1);
return;
}
hpet_address = r.start;
#endif
}
#ifdef CONFIG_X86_LOCAL_APIC
static void __init dtb_cpu_setup(void)
{
struct device_node *dn;
u32 apic_id, version;
version = GET_APIC_VERSION(apic_read(APIC_LVR));
for_each_of_cpu_node(dn) {
apic_id = of_get_cpu_hwid(dn, 0);
if (apic_id == ~0U) {
pr_warn("%pOF: missing local APIC ID\n", dn);
continue;
}
generic_processor_info(apic_id, version);
}
}
static void __init dtb_lapic_setup(void)
{
struct device_node *dn;
struct resource r;
unsigned long lapic_addr = APIC_DEFAULT_PHYS_BASE;
int ret;
dn = of_find_compatible_node(NULL, NULL, "intel,ce4100-lapic");
if (dn) {
ret = of_address_to_resource(dn, 0, &r);
if (WARN_ON(ret))
return;
lapic_addr = r.start;
}
/* Did the boot loader setup the local APIC ? */
if (!boot_cpu_has(X86_FEATURE_APIC)) {
if (apic_force_enable(lapic_addr))
return;
}
smp_found_config = 1;
pic_mode = 1;
register_lapic_address(lapic_addr);
}
#endif /* CONFIG_X86_LOCAL_APIC */
#ifdef CONFIG_X86_IO_APIC
static unsigned int ioapic_id;
struct of_ioapic_type {
u32 out_type;
u32 is_level;
u32 active_low;
};
static struct of_ioapic_type of_ioapic_type[] =
{
{
.out_type = IRQ_TYPE_EDGE_FALLING,
.is_level = 0,
.active_low = 1,
},
{
.out_type = IRQ_TYPE_LEVEL_HIGH,
.is_level = 1,
.active_low = 0,
},
{
.out_type = IRQ_TYPE_LEVEL_LOW,
.is_level = 1,
.active_low = 1,
},
{
.out_type = IRQ_TYPE_EDGE_RISING,
.is_level = 0,
.active_low = 0,
},
};
static int dt_irqdomain_alloc(struct irq_domain *domain, unsigned int virq,
unsigned int nr_irqs, void *arg)
{
struct irq_fwspec *fwspec = (struct irq_fwspec *)arg;
struct of_ioapic_type *it;
struct irq_alloc_info tmp;
int type_index;
if (WARN_ON(fwspec->param_count < 2))
return -EINVAL;
type_index = fwspec->param[1];
if (type_index >= ARRAY_SIZE(of_ioapic_type))
return -EINVAL;
it = &of_ioapic_type[type_index];
ioapic_set_alloc_attr(&tmp, NUMA_NO_NODE, it->is_level, it->active_low);
tmp.devid = mpc_ioapic_id(mp_irqdomain_ioapic_idx(domain));
tmp.ioapic.pin = fwspec->param[0];
return mp_irqdomain_alloc(domain, virq, nr_irqs, &tmp);
}
static const struct irq_domain_ops ioapic_irq_domain_ops = {
.alloc = dt_irqdomain_alloc,
.free = mp_irqdomain_free,
.activate = mp_irqdomain_activate,
.deactivate = mp_irqdomain_deactivate,
};
static void __init dtb_add_ioapic(struct device_node *dn)
{
struct resource r;
int ret;
struct ioapic_domain_cfg cfg = {
.type = IOAPIC_DOMAIN_DYNAMIC,
.ops = &ioapic_irq_domain_ops,
.dev = dn,
};
ret = of_address_to_resource(dn, 0, &r);
if (ret) {
printk(KERN_ERR "Can't obtain address from device node %pOF.\n", dn);
return;
}
mp_register_ioapic(++ioapic_id, r.start, gsi_top, &cfg);
}
static void __init dtb_ioapic_setup(void)
{
struct device_node *dn;
for_each_compatible_node(dn, NULL, "intel,ce4100-ioapic")
dtb_add_ioapic(dn);
if (nr_ioapics) {
of_ioapic = 1;
return;
}
printk(KERN_ERR "Error: No information about IO-APIC in OF.\n");
}
#else
static void __init dtb_ioapic_setup(void) {}
#endif
static void __init dtb_apic_setup(void)
{
#ifdef CONFIG_X86_LOCAL_APIC
dtb_lapic_setup();
dtb_cpu_setup();
#endif
dtb_ioapic_setup();
}
#ifdef CONFIG_OF_EARLY_FLATTREE
static void __init x86_flattree_get_config(void)
{
u32 size, map_len;
void *dt;
if (!initial_dtb)
return;
map_len = max(PAGE_SIZE - (initial_dtb & ~PAGE_MASK), (u64)128);
dt = early_memremap(initial_dtb, map_len);
size = fdt_totalsize(dt);
if (map_len < size) {
early_memunmap(dt, map_len);
dt = early_memremap(initial_dtb, size);
map_len = size;
}
early_init_dt_verify(dt);
unflatten_and_copy_device_tree();
early_memunmap(dt, map_len);
}
#else
static inline void x86_flattree_get_config(void) { }
#endif
void __init x86_dtb_init(void)
{
x86_flattree_get_config();
if (!of_have_populated_dt())
return;
dtb_setup_hpet();
dtb_apic_setup();
}