drivers/acpi/resource.c

23 static inline bool acpi_iospace_resource_valid(struct resource *res)
26 	return res->end < 0x10003;
36 acpi_iospace_resource_valid(struct resource *res) { return true; }
72 static void acpi_dev_memresource_flags(struct resource *res, u64 len,
75 	res->flags = IORESOURCE_MEM;
77 	if (!acpi_dev_resource_len_valid(res->start, res->end, len, false))
78 		res->flags |= IORESOURCE_DISABLED | IORESOURCE_UNSET;
81 		res->flags |= IORESOURCE_MEM_WRITEABLE;
84 static void acpi_dev_get_memresource(struct resource *res, u64 start, u64 len,
87 	res->start = start;
88 	res->end = start + len - 1;
89 	acpi_dev_memresource_flags(res, len, write_protect);
95  * @res: Output generic resource object.
99  * resource object pointed to by @res.
102  * 1) false with res->flags setting to zero: not the expected resource type
103  * 2) false with IORESOURCE_DISABLED in res->flags: valid unassigned resource
106 bool acpi_dev_resource_memory(struct acpi_resource *ares, struct resource *res)
115 		acpi_dev_get_memresource(res, memory24->minimum << 8,
121 		acpi_dev_get_memresource(res, memory32->minimum,
127 		acpi_dev_get_memresource(res, fixed_memory32->address,
132 		res->flags = 0;
136 	return !(res->flags & IORESOURCE_DISABLED);
140 static void acpi_dev_ioresource_flags(struct resource *res, u64 len,
143 	res->flags = IORESOURCE_IO;
145 	if (!acpi_dev_resource_len_valid(res->start, res->end, len, true))
146 		res->flags |= IORESOURCE_DISABLED | IORESOURCE_UNSET;
148 	if (!acpi_iospace_resource_valid(res))
149 		res->flags |= IORESOURCE_DISABLED | IORESOURCE_UNSET;
152 		res->flags |= IORESOURCE_IO_16BIT_ADDR;
154 		res->flags |= IORESOURCE_IO_SPARSE;
157 static void acpi_dev_get_ioresource(struct resource *res, u64 start, u64 len,
160 	res->start = start;
161 	res->end = start + len - 1;
162 	acpi_dev_ioresource_flags(res, len, io_decode, 0);
168  * @res: Output generic resource object.
172  * resource object pointed to by @res.
175  * 1) false with res->flags setting to zero: not the expected resource type
176  * 2) false with IORESOURCE_DISABLED in res->flags: valid unassigned resource
179 bool acpi_dev_resource_io(struct acpi_resource *ares, struct resource *res)
187 		acpi_dev_get_ioresource(res, io->minimum,
193 		acpi_dev_get_ioresource(res, fixed_io->address,
198 		res->flags = 0;
202 	return !(res->flags & IORESOURCE_DISABLED);
214 	struct resource *res = &win->res;
241 	res->start = start;
242 	res->end = end;
244 	    (offset != win->offset || start != res->start || end != res->end)) {
252 		acpi_dev_memresource_flags(res, len, wp);
255 		acpi_dev_ioresource_flags(res, len, iodec,
259 		res->flags = IORESOURCE_BUS;
266 		res->flags |= IORESOURCE_WINDOW;
269 		res->flags |= IORESOURCE_PREFETCH;
271 	return !(res->flags & IORESOURCE_DISABLED);
284  * 1) false with win->res.flags setting to zero: not the expected resource type
285  * 2) false with IORESOURCE_DISABLED in win->res.flags: valid unassigned
294 	win->res.flags = 0;
313  * 1) false with win->res.flags setting to zero: not the expected resource type
314  * 2) false with IORESOURCE_DISABLED in win->res.flags: valid unassigned
323 	win->res.flags = 0;
716 static void acpi_dev_get_irqresource(struct resource *res, u32 gsi,
723 		irqresource_disabled(res, gsi);
754 	res->flags = acpi_dev_irq_flags(triggering, polarity, shareable, wake_capable);
757 		res->start = irq;
758 		res->end = irq;
760 		irqresource_disabled(res, gsi);
768  * @res: Output generic resource object.
775  * to by @res accordingly.  If the registration of the GSI is not successful,
779  * 1) false with res->flags setting to zero: not the expected resource type
780  * 2) false with IORESOURCE_DISABLED in res->flags: valid unassigned resource
784 				 struct resource *res)
797 			irqresource_disabled(res, 0);
800 		acpi_dev_get_irqresource(res, irq->interrupts[index],
808 			irqresource_disabled(res, 0);
812 			acpi_dev_get_irqresource(res, ext_irq->interrupts[index],
817 			irqresource_disabled(res, 0);
820 		res->flags = 0;
856 	*rentry->res = win->res;
868 	struct resource *res = &win.res;
885 	if (acpi_dev_resource_memory(ares, res)
886 	    || acpi_dev_resource_io(ares, res)
891 	for (i = 0; acpi_dev_resource_interrupt(ares, i, res); i++) {
967 	struct resource *res = &win.res;
974 	return !(acpi_dev_resource_memory(ares, res)
1074 static int acpi_dev_consumes_res(struct acpi_device *adev, struct resource *res)
1086 		if (resource_contains(rentry->res, res)) {
1100 	struct resource *res = context;
1107 	if (acpi_dev_consumes_res(adev, res)) {
1116  * acpi_resource_consumer - Find the ACPI device that consumes @res.
1117  * @res: Resource to search for.
1120  * for @res.  If we find an ACPI device whose _CRS includes @res, return
1123 struct acpi_device *acpi_resource_consumer(struct resource *res)
1127 	acpi_get_devices(NULL, acpi_res_consumer_cb, res, (void **) &consumer);