| /* |
| * pnpacpi -- PnP ACPI driver |
| * |
| * Copyright (c) 2004 Matthieu Castet <castet.matthieu@free.fr> |
| * Copyright (c) 2004 Li Shaohua <shaohua.li@intel.com> |
| * Copyright (C) 2008 Hewlett-Packard Development Company, L.P. |
| * Bjorn Helgaas <bjorn.helgaas@hp.com> |
| * |
| * This program is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License as published by the |
| * Free Software Foundation; either version 2, or (at your option) any |
| * later version. |
| * |
| * This program is distributed in the hope that it will be useful, but |
| * WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, write to the Free Software |
| * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| */ |
| #include <linux/kernel.h> |
| #include <linux/acpi.h> |
| #include <linux/pci.h> |
| #include <linux/pnp.h> |
| #include <linux/slab.h> |
| #include "../base.h" |
| #include "pnpacpi.h" |
| |
| #ifdef CONFIG_IA64 |
| #define valid_IRQ(i) (1) |
| #else |
| #define valid_IRQ(i) (((i) != 0) && ((i) != 2)) |
| #endif |
| |
| /* |
| * Allocated Resources |
| */ |
| static int irq_flags(int triggering, int polarity, int shareable) |
| { |
| int flags; |
| |
| if (triggering == ACPI_LEVEL_SENSITIVE) { |
| if (polarity == ACPI_ACTIVE_LOW) |
| flags = IORESOURCE_IRQ_LOWLEVEL; |
| else |
| flags = IORESOURCE_IRQ_HIGHLEVEL; |
| } else { |
| if (polarity == ACPI_ACTIVE_LOW) |
| flags = IORESOURCE_IRQ_LOWEDGE; |
| else |
| flags = IORESOURCE_IRQ_HIGHEDGE; |
| } |
| |
| if (shareable == ACPI_SHARED) |
| flags |= IORESOURCE_IRQ_SHAREABLE; |
| |
| return flags; |
| } |
| |
| static void decode_irq_flags(struct pnp_dev *dev, int flags, int *triggering, |
| int *polarity, int *shareable) |
| { |
| switch (flags & (IORESOURCE_IRQ_LOWLEVEL | IORESOURCE_IRQ_HIGHLEVEL | |
| IORESOURCE_IRQ_LOWEDGE | IORESOURCE_IRQ_HIGHEDGE)) { |
| case IORESOURCE_IRQ_LOWLEVEL: |
| *triggering = ACPI_LEVEL_SENSITIVE; |
| *polarity = ACPI_ACTIVE_LOW; |
| break; |
| case IORESOURCE_IRQ_HIGHLEVEL: |
| *triggering = ACPI_LEVEL_SENSITIVE; |
| *polarity = ACPI_ACTIVE_HIGH; |
| break; |
| case IORESOURCE_IRQ_LOWEDGE: |
| *triggering = ACPI_EDGE_SENSITIVE; |
| *polarity = ACPI_ACTIVE_LOW; |
| break; |
| case IORESOURCE_IRQ_HIGHEDGE: |
| *triggering = ACPI_EDGE_SENSITIVE; |
| *polarity = ACPI_ACTIVE_HIGH; |
| break; |
| default: |
| dev_err(&dev->dev, "can't encode invalid IRQ mode %#x\n", |
| flags); |
| *triggering = ACPI_EDGE_SENSITIVE; |
| *polarity = ACPI_ACTIVE_HIGH; |
| break; |
| } |
| |
| if (flags & IORESOURCE_IRQ_SHAREABLE) |
| *shareable = ACPI_SHARED; |
| else |
| *shareable = ACPI_EXCLUSIVE; |
| } |
| |
| static void pnpacpi_parse_allocated_irqresource(struct pnp_dev *dev, |
| u32 gsi, int triggering, |
| int polarity, int shareable) |
| { |
| int irq, flags; |
| int p, t; |
| |
| if (!valid_IRQ(gsi)) { |
| pnp_add_irq_resource(dev, gsi, IORESOURCE_DISABLED); |
| return; |
| } |
| |
| /* |
| * in IO-APIC mode, use overrided attribute. Two reasons: |
| * 1. BIOS bug in DSDT |
| * 2. BIOS uses IO-APIC mode Interrupt Source Override |
| */ |
| if (!acpi_get_override_irq(gsi, &t, &p)) { |
| t = t ? ACPI_LEVEL_SENSITIVE : ACPI_EDGE_SENSITIVE; |
| p = p ? ACPI_ACTIVE_LOW : ACPI_ACTIVE_HIGH; |
| |
| if (triggering != t || polarity != p) { |
| dev_warn(&dev->dev, "IRQ %d override to %s, %s\n", |
| gsi, t ? "edge":"level", p ? "low":"high"); |
| triggering = t; |
| polarity = p; |
| } |
| } |
| |
| flags = irq_flags(triggering, polarity, shareable); |
| irq = acpi_register_gsi(&dev->dev, gsi, triggering, polarity); |
| if (irq >= 0) |
| pcibios_penalize_isa_irq(irq, 1); |
| else |
| flags |= IORESOURCE_DISABLED; |
| |
| pnp_add_irq_resource(dev, irq, flags); |
| } |
| |
| static int dma_flags(struct pnp_dev *dev, int type, int bus_master, |
| int transfer) |
| { |
| int flags = 0; |
| |
| if (bus_master) |
| flags |= IORESOURCE_DMA_MASTER; |
| switch (type) { |
| case ACPI_COMPATIBILITY: |
| flags |= IORESOURCE_DMA_COMPATIBLE; |
| break; |
| case ACPI_TYPE_A: |
| flags |= IORESOURCE_DMA_TYPEA; |
| break; |
| case ACPI_TYPE_B: |
| flags |= IORESOURCE_DMA_TYPEB; |
| break; |
| case ACPI_TYPE_F: |
| flags |= IORESOURCE_DMA_TYPEF; |
| break; |
| default: |
| /* Set a default value ? */ |
| flags |= IORESOURCE_DMA_COMPATIBLE; |
| dev_err(&dev->dev, "invalid DMA type %d\n", type); |
| } |
| switch (transfer) { |
| case ACPI_TRANSFER_8: |
| flags |= IORESOURCE_DMA_8BIT; |
| break; |
| case ACPI_TRANSFER_8_16: |
| flags |= IORESOURCE_DMA_8AND16BIT; |
| break; |
| case ACPI_TRANSFER_16: |
| flags |= IORESOURCE_DMA_16BIT; |
| break; |
| default: |
| /* Set a default value ? */ |
| flags |= IORESOURCE_DMA_8AND16BIT; |
| dev_err(&dev->dev, "invalid DMA transfer type %d\n", transfer); |
| } |
| |
| return flags; |
| } |
| |
| static void pnpacpi_parse_allocated_ioresource(struct pnp_dev *dev, u64 start, |
| u64 len, int io_decode, |
| int window) |
| { |
| int flags = 0; |
| u64 end = start + len - 1; |
| |
| if (io_decode == ACPI_DECODE_16) |
| flags |= IORESOURCE_IO_16BIT_ADDR; |
| if (len == 0 || end >= 0x10003) |
| flags |= IORESOURCE_DISABLED; |
| if (window) |
| flags |= IORESOURCE_WINDOW; |
| |
| pnp_add_io_resource(dev, start, end, flags); |
| } |
| |
| /* |
| * Device CSRs that do not appear in PCI config space should be described |
| * via ACPI. This would normally be done with Address Space Descriptors |
| * marked as "consumer-only," but old versions of Windows and Linux ignore |
| * the producer/consumer flag, so HP invented a vendor-defined resource to |
| * describe the location and size of CSR space. |
| */ |
| static struct acpi_vendor_uuid hp_ccsr_uuid = { |
| .subtype = 2, |
| .data = { 0xf9, 0xad, 0xe9, 0x69, 0x4f, 0x92, 0x5f, 0xab, 0xf6, 0x4a, |
| 0x24, 0xd2, 0x01, 0x37, 0x0e, 0xad }, |
| }; |
| |
| static int vendor_resource_matches(struct pnp_dev *dev, |
| struct acpi_resource_vendor_typed *vendor, |
| struct acpi_vendor_uuid *match, |
| int expected_len) |
| { |
| int uuid_len = sizeof(vendor->uuid); |
| u8 uuid_subtype = vendor->uuid_subtype; |
| u8 *uuid = vendor->uuid; |
| int actual_len; |
| |
| /* byte_length includes uuid_subtype and uuid */ |
| actual_len = vendor->byte_length - uuid_len - 1; |
| |
| if (uuid_subtype == match->subtype && |
| uuid_len == sizeof(match->data) && |
| memcmp(uuid, match->data, uuid_len) == 0) { |
| if (expected_len && expected_len != actual_len) { |
| dev_err(&dev->dev, "wrong vendor descriptor size; " |
| "expected %d, found %d bytes\n", |
| expected_len, actual_len); |
| return 0; |
| } |
| |
| return 1; |
| } |
| |
| return 0; |
| } |
| |
| static void pnpacpi_parse_allocated_vendor(struct pnp_dev *dev, |
| struct acpi_resource_vendor_typed *vendor) |
| { |
| if (vendor_resource_matches(dev, vendor, &hp_ccsr_uuid, 16)) { |
| u64 start, length; |
| |
| memcpy(&start, vendor->byte_data, sizeof(start)); |
| memcpy(&length, vendor->byte_data + 8, sizeof(length)); |
| |
| pnp_add_mem_resource(dev, start, start + length - 1, 0); |
| } |
| } |
| |
| static void pnpacpi_parse_allocated_memresource(struct pnp_dev *dev, |
| u64 start, u64 len, |
| int write_protect, int window) |
| { |
| int flags = 0; |
| u64 end = start + len - 1; |
| |
| if (len == 0) |
| flags |= IORESOURCE_DISABLED; |
| if (write_protect == ACPI_READ_WRITE_MEMORY) |
| flags |= IORESOURCE_MEM_WRITEABLE; |
| if (window) |
| flags |= IORESOURCE_WINDOW; |
| |
| pnp_add_mem_resource(dev, start, end, flags); |
| } |
| |
| static void pnpacpi_parse_allocated_busresource(struct pnp_dev *dev, |
| u64 start, u64 len) |
| { |
| u64 end = start + len - 1; |
| |
| pnp_add_bus_resource(dev, start, end); |
| } |
| |
| static void pnpacpi_parse_allocated_address_space(struct pnp_dev *dev, |
| struct acpi_resource *res) |
| { |
| struct acpi_resource_address64 addr, *p = &addr; |
| acpi_status status; |
| int window; |
| u64 len; |
| |
| status = acpi_resource_to_address64(res, p); |
| if (!ACPI_SUCCESS(status)) { |
| dev_warn(&dev->dev, "failed to convert resource type %d\n", |
| res->type); |
| return; |
| } |
| |
| /* Windows apparently computes length rather than using _LEN */ |
| len = p->maximum - p->minimum + 1; |
| window = (p->producer_consumer == ACPI_PRODUCER) ? 1 : 0; |
| |
| if (p->resource_type == ACPI_MEMORY_RANGE) |
| pnpacpi_parse_allocated_memresource(dev, p->minimum, len, |
| p->info.mem.write_protect, window); |
| else if (p->resource_type == ACPI_IO_RANGE) |
| pnpacpi_parse_allocated_ioresource(dev, p->minimum, len, |
| p->granularity == 0xfff ? ACPI_DECODE_10 : |
| ACPI_DECODE_16, window); |
| else if (p->resource_type == ACPI_BUS_NUMBER_RANGE) |
| pnpacpi_parse_allocated_busresource(dev, p->minimum, len); |
| } |
| |
| static void pnpacpi_parse_allocated_ext_address_space(struct pnp_dev *dev, |
| struct acpi_resource *res) |
| { |
| struct acpi_resource_extended_address64 *p = &res->data.ext_address64; |
| int window; |
| u64 len; |
| |
| /* Windows apparently computes length rather than using _LEN */ |
| len = p->maximum - p->minimum + 1; |
| window = (p->producer_consumer == ACPI_PRODUCER) ? 1 : 0; |
| |
| if (p->resource_type == ACPI_MEMORY_RANGE) |
| pnpacpi_parse_allocated_memresource(dev, p->minimum, len, |
| p->info.mem.write_protect, window); |
| else if (p->resource_type == ACPI_IO_RANGE) |
| pnpacpi_parse_allocated_ioresource(dev, p->minimum, len, |
| p->granularity == 0xfff ? ACPI_DECODE_10 : |
| ACPI_DECODE_16, window); |
| else if (p->resource_type == ACPI_BUS_NUMBER_RANGE) |
| pnpacpi_parse_allocated_busresource(dev, p->minimum, len); |
| } |
| |
| static acpi_status pnpacpi_allocated_resource(struct acpi_resource *res, |
| void *data) |
| { |
| struct pnp_dev *dev = data; |
| struct acpi_resource_irq *irq; |
| struct acpi_resource_dma *dma; |
| struct acpi_resource_io *io; |
| struct acpi_resource_fixed_io *fixed_io; |
| struct acpi_resource_vendor_typed *vendor_typed; |
| struct acpi_resource_memory24 *memory24; |
| struct acpi_resource_memory32 *memory32; |
| struct acpi_resource_fixed_memory32 *fixed_memory32; |
| struct acpi_resource_extended_irq *extended_irq; |
| int i, flags; |
| |
| switch (res->type) { |
| case ACPI_RESOURCE_TYPE_IRQ: |
| /* |
| * Per spec, only one interrupt per descriptor is allowed in |
| * _CRS, but some firmware violates this, so parse them all. |
| */ |
| irq = &res->data.irq; |
| if (irq->interrupt_count == 0) |
| pnp_add_irq_resource(dev, 0, IORESOURCE_DISABLED); |
| else { |
| for (i = 0; i < irq->interrupt_count; i++) { |
| pnpacpi_parse_allocated_irqresource(dev, |
| irq->interrupts[i], |
| irq->triggering, |
| irq->polarity, |
| irq->sharable); |
| } |
| |
| /* |
| * The IRQ encoder puts a single interrupt in each |
| * descriptor, so if a _CRS descriptor has more than |
| * one interrupt, we won't be able to re-encode it. |
| */ |
| if (pnp_can_write(dev) && irq->interrupt_count > 1) { |
| dev_warn(&dev->dev, "multiple interrupts in " |
| "_CRS descriptor; configuration can't " |
| "be changed\n"); |
| dev->capabilities &= ~PNP_WRITE; |
| } |
| } |
| break; |
| |
| case ACPI_RESOURCE_TYPE_DMA: |
| dma = &res->data.dma; |
| if (dma->channel_count > 0 && dma->channels[0] != (u8) -1) |
| flags = dma_flags(dev, dma->type, dma->bus_master, |
| dma->transfer); |
| else |
| flags = IORESOURCE_DISABLED; |
| pnp_add_dma_resource(dev, dma->channels[0], flags); |
| break; |
| |
| case ACPI_RESOURCE_TYPE_IO: |
| io = &res->data.io; |
| pnpacpi_parse_allocated_ioresource(dev, |
| io->minimum, |
| io->address_length, |
| io->io_decode, 0); |
| break; |
| |
| case ACPI_RESOURCE_TYPE_START_DEPENDENT: |
| case ACPI_RESOURCE_TYPE_END_DEPENDENT: |
| break; |
| |
| case ACPI_RESOURCE_TYPE_FIXED_IO: |
| fixed_io = &res->data.fixed_io; |
| pnpacpi_parse_allocated_ioresource(dev, |
| fixed_io->address, |
| fixed_io->address_length, |
| ACPI_DECODE_10, 0); |
| break; |
| |
| case ACPI_RESOURCE_TYPE_VENDOR: |
| vendor_typed = &res->data.vendor_typed; |
| pnpacpi_parse_allocated_vendor(dev, vendor_typed); |
| break; |
| |
| case ACPI_RESOURCE_TYPE_END_TAG: |
| break; |
| |
| case ACPI_RESOURCE_TYPE_MEMORY24: |
| memory24 = &res->data.memory24; |
| pnpacpi_parse_allocated_memresource(dev, |
| memory24->minimum, |
| memory24->address_length, |
| memory24->write_protect, 0); |
| break; |
| case ACPI_RESOURCE_TYPE_MEMORY32: |
| memory32 = &res->data.memory32; |
| pnpacpi_parse_allocated_memresource(dev, |
| memory32->minimum, |
| memory32->address_length, |
| memory32->write_protect, 0); |
| break; |
| case ACPI_RESOURCE_TYPE_FIXED_MEMORY32: |
| fixed_memory32 = &res->data.fixed_memory32; |
| pnpacpi_parse_allocated_memresource(dev, |
| fixed_memory32->address, |
| fixed_memory32->address_length, |
| fixed_memory32->write_protect, 0); |
| break; |
| case ACPI_RESOURCE_TYPE_ADDRESS16: |
| case ACPI_RESOURCE_TYPE_ADDRESS32: |
| case ACPI_RESOURCE_TYPE_ADDRESS64: |
| pnpacpi_parse_allocated_address_space(dev, res); |
| break; |
| |
| case ACPI_RESOURCE_TYPE_EXTENDED_ADDRESS64: |
| pnpacpi_parse_allocated_ext_address_space(dev, res); |
| break; |
| |
| case ACPI_RESOURCE_TYPE_EXTENDED_IRQ: |
| extended_irq = &res->data.extended_irq; |
| |
| if (extended_irq->interrupt_count == 0) |
| pnp_add_irq_resource(dev, 0, IORESOURCE_DISABLED); |
| else { |
| for (i = 0; i < extended_irq->interrupt_count; i++) { |
| pnpacpi_parse_allocated_irqresource(dev, |
| extended_irq->interrupts[i], |
| extended_irq->triggering, |
| extended_irq->polarity, |
| extended_irq->sharable); |
| } |
| |
| /* |
| * The IRQ encoder puts a single interrupt in each |
| * descriptor, so if a _CRS descriptor has more than |
| * one interrupt, we won't be able to re-encode it. |
| */ |
| if (pnp_can_write(dev) && |
| extended_irq->interrupt_count > 1) { |
| dev_warn(&dev->dev, "multiple interrupts in " |
| "_CRS descriptor; configuration can't " |
| "be changed\n"); |
| dev->capabilities &= ~PNP_WRITE; |
| } |
| } |
| break; |
| |
| case ACPI_RESOURCE_TYPE_GENERIC_REGISTER: |
| break; |
| |
| default: |
| dev_warn(&dev->dev, "unknown resource type %d in _CRS\n", |
| res->type); |
| return AE_ERROR; |
| } |
| |
| return AE_OK; |
| } |
| |
| int pnpacpi_parse_allocated_resource(struct pnp_dev *dev) |
| { |
| struct acpi_device *acpi_dev = dev->data; |
| acpi_handle handle = acpi_dev->handle; |
| acpi_status status; |
| |
| pnp_dbg(&dev->dev, "parse allocated resources\n"); |
| |
| pnp_init_resources(dev); |
| |
| status = acpi_walk_resources(handle, METHOD_NAME__CRS, |
| pnpacpi_allocated_resource, dev); |
| |
| if (ACPI_FAILURE(status)) { |
| if (status != AE_NOT_FOUND) |
| dev_err(&dev->dev, "can't evaluate _CRS: %d", status); |
| return -EPERM; |
| } |
| return 0; |
| } |
| |
| static __init void pnpacpi_parse_dma_option(struct pnp_dev *dev, |
| unsigned int option_flags, |
| struct acpi_resource_dma *p) |
| { |
| int i; |
| unsigned char map = 0, flags; |
| |
| if (p->channel_count == 0) |
| return; |
| |
| for (i = 0; i < p->channel_count; i++) |
| map |= 1 << p->channels[i]; |
| |
| flags = dma_flags(dev, p->type, p->bus_master, p->transfer); |
| pnp_register_dma_resource(dev, option_flags, map, flags); |
| } |
| |
| static __init void pnpacpi_parse_irq_option(struct pnp_dev *dev, |
| unsigned int option_flags, |
| struct acpi_resource_irq *p) |
| { |
| int i; |
| pnp_irq_mask_t map; |
| unsigned char flags; |
| |
| if (p->interrupt_count == 0) |
| return; |
| |
| bitmap_zero(map.bits, PNP_IRQ_NR); |
| for (i = 0; i < p->interrupt_count; i++) |
| if (p->interrupts[i]) |
| __set_bit(p->interrupts[i], map.bits); |
| |
| flags = irq_flags(p->triggering, p->polarity, p->sharable); |
| pnp_register_irq_resource(dev, option_flags, &map, flags); |
| } |
| |
| static __init void pnpacpi_parse_ext_irq_option(struct pnp_dev *dev, |
| unsigned int option_flags, |
| struct acpi_resource_extended_irq *p) |
| { |
| int i; |
| pnp_irq_mask_t map; |
| unsigned char flags; |
| |
| if (p->interrupt_count == 0) |
| return; |
| |
| bitmap_zero(map.bits, PNP_IRQ_NR); |
| for (i = 0; i < p->interrupt_count; i++) { |
| if (p->interrupts[i]) { |
| if (p->interrupts[i] < PNP_IRQ_NR) |
| __set_bit(p->interrupts[i], map.bits); |
| else |
| dev_err(&dev->dev, "ignoring IRQ %d option " |
| "(too large for %d entry bitmap)\n", |
| p->interrupts[i], PNP_IRQ_NR); |
| } |
| } |
| |
| flags = irq_flags(p->triggering, p->polarity, p->sharable); |
| pnp_register_irq_resource(dev, option_flags, &map, flags); |
| } |
| |
| static __init void pnpacpi_parse_port_option(struct pnp_dev *dev, |
| unsigned int option_flags, |
| struct acpi_resource_io *io) |
| { |
| unsigned char flags = 0; |
| |
| if (io->address_length == 0) |
| return; |
| |
| if (io->io_decode == ACPI_DECODE_16) |
| flags = IORESOURCE_IO_16BIT_ADDR; |
| pnp_register_port_resource(dev, option_flags, io->minimum, io->maximum, |
| io->alignment, io->address_length, flags); |
| } |
| |
| static __init void pnpacpi_parse_fixed_port_option(struct pnp_dev *dev, |
| unsigned int option_flags, |
| struct acpi_resource_fixed_io *io) |
| { |
| if (io->address_length == 0) |
| return; |
| |
| pnp_register_port_resource(dev, option_flags, io->address, io->address, |
| 0, io->address_length, IORESOURCE_IO_FIXED); |
| } |
| |
| static __init void pnpacpi_parse_mem24_option(struct pnp_dev *dev, |
| unsigned int option_flags, |
| struct acpi_resource_memory24 *p) |
| { |
| unsigned char flags = 0; |
| |
| if (p->address_length == 0) |
| return; |
| |
| if (p->write_protect == ACPI_READ_WRITE_MEMORY) |
| flags = IORESOURCE_MEM_WRITEABLE; |
| pnp_register_mem_resource(dev, option_flags, p->minimum, p->maximum, |
| p->alignment, p->address_length, flags); |
| } |
| |
| static __init void pnpacpi_parse_mem32_option(struct pnp_dev *dev, |
| unsigned int option_flags, |
| struct acpi_resource_memory32 *p) |
| { |
| unsigned char flags = 0; |
| |
| if (p->address_length == 0) |
| return; |
| |
| if (p->write_protect == ACPI_READ_WRITE_MEMORY) |
| flags = IORESOURCE_MEM_WRITEABLE; |
| pnp_register_mem_resource(dev, option_flags, p->minimum, p->maximum, |
| p->alignment, p->address_length, flags); |
| } |
| |
| static __init void pnpacpi_parse_fixed_mem32_option(struct pnp_dev *dev, |
| unsigned int option_flags, |
| struct acpi_resource_fixed_memory32 *p) |
| { |
| unsigned char flags = 0; |
| |
| if (p->address_length == 0) |
| return; |
| |
| if (p->write_protect == ACPI_READ_WRITE_MEMORY) |
| flags = IORESOURCE_MEM_WRITEABLE; |
| pnp_register_mem_resource(dev, option_flags, p->address, p->address, |
| 0, p->address_length, flags); |
| } |
| |
| static __init void pnpacpi_parse_address_option(struct pnp_dev *dev, |
| unsigned int option_flags, |
| struct acpi_resource *r) |
| { |
| struct acpi_resource_address64 addr, *p = &addr; |
| acpi_status status; |
| unsigned char flags = 0; |
| |
| status = acpi_resource_to_address64(r, p); |
| if (ACPI_FAILURE(status)) { |
| dev_warn(&dev->dev, "can't convert resource type %d\n", |
| r->type); |
| return; |
| } |
| |
| if (p->address_length == 0) |
| return; |
| |
| if (p->resource_type == ACPI_MEMORY_RANGE) { |
| if (p->info.mem.write_protect == ACPI_READ_WRITE_MEMORY) |
| flags = IORESOURCE_MEM_WRITEABLE; |
| pnp_register_mem_resource(dev, option_flags, p->minimum, |
| p->minimum, 0, p->address_length, |
| flags); |
| } else if (p->resource_type == ACPI_IO_RANGE) |
| pnp_register_port_resource(dev, option_flags, p->minimum, |
| p->minimum, 0, p->address_length, |
| IORESOURCE_IO_FIXED); |
| } |
| |
| static __init void pnpacpi_parse_ext_address_option(struct pnp_dev *dev, |
| unsigned int option_flags, |
| struct acpi_resource *r) |
| { |
| struct acpi_resource_extended_address64 *p = &r->data.ext_address64; |
| unsigned char flags = 0; |
| |
| if (p->address_length == 0) |
| return; |
| |
| if (p->resource_type == ACPI_MEMORY_RANGE) { |
| if (p->info.mem.write_protect == ACPI_READ_WRITE_MEMORY) |
| flags = IORESOURCE_MEM_WRITEABLE; |
| pnp_register_mem_resource(dev, option_flags, p->minimum, |
| p->minimum, 0, p->address_length, |
| flags); |
| } else if (p->resource_type == ACPI_IO_RANGE) |
| pnp_register_port_resource(dev, option_flags, p->minimum, |
| p->minimum, 0, p->address_length, |
| IORESOURCE_IO_FIXED); |
| } |
| |
| struct acpipnp_parse_option_s { |
| struct pnp_dev *dev; |
| unsigned int option_flags; |
| }; |
| |
| static __init acpi_status pnpacpi_option_resource(struct acpi_resource *res, |
| void *data) |
| { |
| int priority; |
| struct acpipnp_parse_option_s *parse_data = data; |
| struct pnp_dev *dev = parse_data->dev; |
| unsigned int option_flags = parse_data->option_flags; |
| |
| switch (res->type) { |
| case ACPI_RESOURCE_TYPE_IRQ: |
| pnpacpi_parse_irq_option(dev, option_flags, &res->data.irq); |
| break; |
| |
| case ACPI_RESOURCE_TYPE_DMA: |
| pnpacpi_parse_dma_option(dev, option_flags, &res->data.dma); |
| break; |
| |
| case ACPI_RESOURCE_TYPE_START_DEPENDENT: |
| switch (res->data.start_dpf.compatibility_priority) { |
| case ACPI_GOOD_CONFIGURATION: |
| priority = PNP_RES_PRIORITY_PREFERRED; |
| break; |
| |
| case ACPI_ACCEPTABLE_CONFIGURATION: |
| priority = PNP_RES_PRIORITY_ACCEPTABLE; |
| break; |
| |
| case ACPI_SUB_OPTIMAL_CONFIGURATION: |
| priority = PNP_RES_PRIORITY_FUNCTIONAL; |
| break; |
| default: |
| priority = PNP_RES_PRIORITY_INVALID; |
| break; |
| } |
| parse_data->option_flags = pnp_new_dependent_set(dev, priority); |
| break; |
| |
| case ACPI_RESOURCE_TYPE_END_DEPENDENT: |
| parse_data->option_flags = 0; |
| break; |
| |
| case ACPI_RESOURCE_TYPE_IO: |
| pnpacpi_parse_port_option(dev, option_flags, &res->data.io); |
| break; |
| |
| case ACPI_RESOURCE_TYPE_FIXED_IO: |
| pnpacpi_parse_fixed_port_option(dev, option_flags, |
| &res->data.fixed_io); |
| break; |
| |
| case ACPI_RESOURCE_TYPE_VENDOR: |
| case ACPI_RESOURCE_TYPE_END_TAG: |
| break; |
| |
| case ACPI_RESOURCE_TYPE_MEMORY24: |
| pnpacpi_parse_mem24_option(dev, option_flags, |
| &res->data.memory24); |
| break; |
| |
| case ACPI_RESOURCE_TYPE_MEMORY32: |
| pnpacpi_parse_mem32_option(dev, option_flags, |
| &res->data.memory32); |
| break; |
| |
| case ACPI_RESOURCE_TYPE_FIXED_MEMORY32: |
| pnpacpi_parse_fixed_mem32_option(dev, option_flags, |
| &res->data.fixed_memory32); |
| break; |
| |
| case ACPI_RESOURCE_TYPE_ADDRESS16: |
| case ACPI_RESOURCE_TYPE_ADDRESS32: |
| case ACPI_RESOURCE_TYPE_ADDRESS64: |
| pnpacpi_parse_address_option(dev, option_flags, res); |
| break; |
| |
| case ACPI_RESOURCE_TYPE_EXTENDED_ADDRESS64: |
| pnpacpi_parse_ext_address_option(dev, option_flags, res); |
| break; |
| |
| case ACPI_RESOURCE_TYPE_EXTENDED_IRQ: |
| pnpacpi_parse_ext_irq_option(dev, option_flags, |
| &res->data.extended_irq); |
| break; |
| |
| case ACPI_RESOURCE_TYPE_GENERIC_REGISTER: |
| break; |
| |
| default: |
| dev_warn(&dev->dev, "unknown resource type %d in _PRS\n", |
| res->type); |
| return AE_ERROR; |
| } |
| |
| return AE_OK; |
| } |
| |
| int __init pnpacpi_parse_resource_option_data(struct pnp_dev *dev) |
| { |
| struct acpi_device *acpi_dev = dev->data; |
| acpi_handle handle = acpi_dev->handle; |
| acpi_status status; |
| struct acpipnp_parse_option_s parse_data; |
| |
| pnp_dbg(&dev->dev, "parse resource options\n"); |
| |
| parse_data.dev = dev; |
| parse_data.option_flags = 0; |
| |
| status = acpi_walk_resources(handle, METHOD_NAME__PRS, |
| pnpacpi_option_resource, &parse_data); |
| |
| if (ACPI_FAILURE(status)) { |
| if (status != AE_NOT_FOUND) |
| dev_err(&dev->dev, "can't evaluate _PRS: %d", status); |
| return -EPERM; |
| } |
| return 0; |
| } |
| |
| static int pnpacpi_supported_resource(struct acpi_resource *res) |
| { |
| switch (res->type) { |
| case ACPI_RESOURCE_TYPE_IRQ: |
| case ACPI_RESOURCE_TYPE_DMA: |
| case ACPI_RESOURCE_TYPE_IO: |
| case ACPI_RESOURCE_TYPE_FIXED_IO: |
| case ACPI_RESOURCE_TYPE_MEMORY24: |
| case ACPI_RESOURCE_TYPE_MEMORY32: |
| case ACPI_RESOURCE_TYPE_FIXED_MEMORY32: |
| case ACPI_RESOURCE_TYPE_ADDRESS16: |
| case ACPI_RESOURCE_TYPE_ADDRESS32: |
| case ACPI_RESOURCE_TYPE_ADDRESS64: |
| case ACPI_RESOURCE_TYPE_EXTENDED_ADDRESS64: |
| case ACPI_RESOURCE_TYPE_EXTENDED_IRQ: |
| return 1; |
| } |
| return 0; |
| } |
| |
| /* |
| * Set resource |
| */ |
| static acpi_status pnpacpi_count_resources(struct acpi_resource *res, |
| void *data) |
| { |
| int *res_cnt = data; |
| |
| if (pnpacpi_supported_resource(res)) |
| (*res_cnt)++; |
| return AE_OK; |
| } |
| |
| static acpi_status pnpacpi_type_resources(struct acpi_resource *res, void *data) |
| { |
| struct acpi_resource **resource = data; |
| |
| if (pnpacpi_supported_resource(res)) { |
| (*resource)->type = res->type; |
| (*resource)->length = sizeof(struct acpi_resource); |
| if (res->type == ACPI_RESOURCE_TYPE_IRQ) |
| (*resource)->data.irq.descriptor_length = |
| res->data.irq.descriptor_length; |
| (*resource)++; |
| } |
| |
| return AE_OK; |
| } |
| |
| int pnpacpi_build_resource_template(struct pnp_dev *dev, |
| struct acpi_buffer *buffer) |
| { |
| struct acpi_device *acpi_dev = dev->data; |
| acpi_handle handle = acpi_dev->handle; |
| struct acpi_resource *resource; |
| int res_cnt = 0; |
| acpi_status status; |
| |
| status = acpi_walk_resources(handle, METHOD_NAME__CRS, |
| pnpacpi_count_resources, &res_cnt); |
| if (ACPI_FAILURE(status)) { |
| dev_err(&dev->dev, "can't evaluate _CRS: %d\n", status); |
| return -EINVAL; |
| } |
| if (!res_cnt) |
| return -EINVAL; |
| buffer->length = sizeof(struct acpi_resource) * (res_cnt + 1) + 1; |
| buffer->pointer = kzalloc(buffer->length - 1, GFP_KERNEL); |
| if (!buffer->pointer) |
| return -ENOMEM; |
| |
| resource = (struct acpi_resource *)buffer->pointer; |
| status = acpi_walk_resources(handle, METHOD_NAME__CRS, |
| pnpacpi_type_resources, &resource); |
| if (ACPI_FAILURE(status)) { |
| kfree(buffer->pointer); |
| dev_err(&dev->dev, "can't evaluate _CRS: %d\n", status); |
| return -EINVAL; |
| } |
| /* resource will pointer the end resource now */ |
| resource->type = ACPI_RESOURCE_TYPE_END_TAG; |
| |
| return 0; |
| } |
| |
| static void pnpacpi_encode_irq(struct pnp_dev *dev, |
| struct acpi_resource *resource, |
| struct resource *p) |
| { |
| struct acpi_resource_irq *irq = &resource->data.irq; |
| int triggering, polarity, shareable; |
| |
| if (!pnp_resource_enabled(p)) { |
| irq->interrupt_count = 0; |
| pnp_dbg(&dev->dev, " encode irq (%s)\n", |
| p ? "disabled" : "missing"); |
| return; |
| } |
| |
| decode_irq_flags(dev, p->flags, &triggering, &polarity, &shareable); |
| irq->triggering = triggering; |
| irq->polarity = polarity; |
| irq->sharable = shareable; |
| irq->interrupt_count = 1; |
| irq->interrupts[0] = p->start; |
| |
| pnp_dbg(&dev->dev, " encode irq %d %s %s %s (%d-byte descriptor)\n", |
| (int) p->start, |
| triggering == ACPI_LEVEL_SENSITIVE ? "level" : "edge", |
| polarity == ACPI_ACTIVE_LOW ? "low" : "high", |
| irq->sharable == ACPI_SHARED ? "shared" : "exclusive", |
| irq->descriptor_length); |
| } |
| |
| static void pnpacpi_encode_ext_irq(struct pnp_dev *dev, |
| struct acpi_resource *resource, |
| struct resource *p) |
| { |
| struct acpi_resource_extended_irq *extended_irq = &resource->data.extended_irq; |
| int triggering, polarity, shareable; |
| |
| if (!pnp_resource_enabled(p)) { |
| extended_irq->interrupt_count = 0; |
| pnp_dbg(&dev->dev, " encode extended irq (%s)\n", |
| p ? "disabled" : "missing"); |
| return; |
| } |
| |
| decode_irq_flags(dev, p->flags, &triggering, &polarity, &shareable); |
| extended_irq->producer_consumer = ACPI_CONSUMER; |
| extended_irq->triggering = triggering; |
| extended_irq->polarity = polarity; |
| extended_irq->sharable = shareable; |
| extended_irq->interrupt_count = 1; |
| extended_irq->interrupts[0] = p->start; |
| |
| pnp_dbg(&dev->dev, " encode irq %d %s %s %s\n", (int) p->start, |
| triggering == ACPI_LEVEL_SENSITIVE ? "level" : "edge", |
| polarity == ACPI_ACTIVE_LOW ? "low" : "high", |
| extended_irq->sharable == ACPI_SHARED ? "shared" : "exclusive"); |
| } |
| |
| static void pnpacpi_encode_dma(struct pnp_dev *dev, |
| struct acpi_resource *resource, |
| struct resource *p) |
| { |
| struct acpi_resource_dma *dma = &resource->data.dma; |
| |
| if (!pnp_resource_enabled(p)) { |
| dma->channel_count = 0; |
| pnp_dbg(&dev->dev, " encode dma (%s)\n", |
| p ? "disabled" : "missing"); |
| return; |
| } |
| |
| /* Note: pnp_assign_dma will copy pnp_dma->flags into p->flags */ |
| switch (p->flags & IORESOURCE_DMA_SPEED_MASK) { |
| case IORESOURCE_DMA_TYPEA: |
| dma->type = ACPI_TYPE_A; |
| break; |
| case IORESOURCE_DMA_TYPEB: |
| dma->type = ACPI_TYPE_B; |
| break; |
| case IORESOURCE_DMA_TYPEF: |
| dma->type = ACPI_TYPE_F; |
| break; |
| default: |
| dma->type = ACPI_COMPATIBILITY; |
| } |
| |
| switch (p->flags & IORESOURCE_DMA_TYPE_MASK) { |
| case IORESOURCE_DMA_8BIT: |
| dma->transfer = ACPI_TRANSFER_8; |
| break; |
| case IORESOURCE_DMA_8AND16BIT: |
| dma->transfer = ACPI_TRANSFER_8_16; |
| break; |
| default: |
| dma->transfer = ACPI_TRANSFER_16; |
| } |
| |
| dma->bus_master = !!(p->flags & IORESOURCE_DMA_MASTER); |
| dma->channel_count = 1; |
| dma->channels[0] = p->start; |
| |
| pnp_dbg(&dev->dev, " encode dma %d " |
| "type %#x transfer %#x master %d\n", |
| (int) p->start, dma->type, dma->transfer, dma->bus_master); |
| } |
| |
| static void pnpacpi_encode_io(struct pnp_dev *dev, |
| struct acpi_resource *resource, |
| struct resource *p) |
| { |
| struct acpi_resource_io *io = &resource->data.io; |
| |
| if (pnp_resource_enabled(p)) { |
| /* Note: pnp_assign_port copies pnp_port->flags into p->flags */ |
| io->io_decode = (p->flags & IORESOURCE_IO_16BIT_ADDR) ? |
| ACPI_DECODE_16 : ACPI_DECODE_10; |
| io->minimum = p->start; |
| io->maximum = p->end; |
| io->alignment = 0; /* Correct? */ |
| io->address_length = p->end - p->start + 1; |
| } else { |
| io->minimum = 0; |
| io->address_length = 0; |
| } |
| |
| pnp_dbg(&dev->dev, " encode io %#x-%#x decode %#x\n", io->minimum, |
| io->minimum + io->address_length - 1, io->io_decode); |
| } |
| |
| static void pnpacpi_encode_fixed_io(struct pnp_dev *dev, |
| struct acpi_resource *resource, |
| struct resource *p) |
| { |
| struct acpi_resource_fixed_io *fixed_io = &resource->data.fixed_io; |
| |
| if (pnp_resource_enabled(p)) { |
| fixed_io->address = p->start; |
| fixed_io->address_length = p->end - p->start + 1; |
| } else { |
| fixed_io->address = 0; |
| fixed_io->address_length = 0; |
| } |
| |
| pnp_dbg(&dev->dev, " encode fixed_io %#x-%#x\n", fixed_io->address, |
| fixed_io->address + fixed_io->address_length - 1); |
| } |
| |
| static void pnpacpi_encode_mem24(struct pnp_dev *dev, |
| struct acpi_resource *resource, |
| struct resource *p) |
| { |
| struct acpi_resource_memory24 *memory24 = &resource->data.memory24; |
| |
| if (pnp_resource_enabled(p)) { |
| /* Note: pnp_assign_mem copies pnp_mem->flags into p->flags */ |
| memory24->write_protect = p->flags & IORESOURCE_MEM_WRITEABLE ? |
| ACPI_READ_WRITE_MEMORY : ACPI_READ_ONLY_MEMORY; |
| memory24->minimum = p->start; |
| memory24->maximum = p->end; |
| memory24->alignment = 0; |
| memory24->address_length = p->end - p->start + 1; |
| } else { |
| memory24->minimum = 0; |
| memory24->address_length = 0; |
| } |
| |
| pnp_dbg(&dev->dev, " encode mem24 %#x-%#x write_protect %#x\n", |
| memory24->minimum, |
| memory24->minimum + memory24->address_length - 1, |
| memory24->write_protect); |
| } |
| |
| static void pnpacpi_encode_mem32(struct pnp_dev *dev, |
| struct acpi_resource *resource, |
| struct resource *p) |
| { |
| struct acpi_resource_memory32 *memory32 = &resource->data.memory32; |
| |
| if (pnp_resource_enabled(p)) { |
| memory32->write_protect = p->flags & IORESOURCE_MEM_WRITEABLE ? |
| ACPI_READ_WRITE_MEMORY : ACPI_READ_ONLY_MEMORY; |
| memory32->minimum = p->start; |
| memory32->maximum = p->end; |
| memory32->alignment = 0; |
| memory32->address_length = p->end - p->start + 1; |
| } else { |
| memory32->minimum = 0; |
| memory32->alignment = 0; |
| } |
| |
| pnp_dbg(&dev->dev, " encode mem32 %#x-%#x write_protect %#x\n", |
| memory32->minimum, |
| memory32->minimum + memory32->address_length - 1, |
| memory32->write_protect); |
| } |
| |
| static void pnpacpi_encode_fixed_mem32(struct pnp_dev *dev, |
| struct acpi_resource *resource, |
| struct resource *p) |
| { |
| struct acpi_resource_fixed_memory32 *fixed_memory32 = &resource->data.fixed_memory32; |
| |
| if (pnp_resource_enabled(p)) { |
| fixed_memory32->write_protect = |
| p->flags & IORESOURCE_MEM_WRITEABLE ? |
| ACPI_READ_WRITE_MEMORY : ACPI_READ_ONLY_MEMORY; |
| fixed_memory32->address = p->start; |
| fixed_memory32->address_length = p->end - p->start + 1; |
| } else { |
| fixed_memory32->address = 0; |
| fixed_memory32->address_length = 0; |
| } |
| |
| pnp_dbg(&dev->dev, " encode fixed_mem32 %#x-%#x write_protect %#x\n", |
| fixed_memory32->address, |
| fixed_memory32->address + fixed_memory32->address_length - 1, |
| fixed_memory32->write_protect); |
| } |
| |
| int pnpacpi_encode_resources(struct pnp_dev *dev, struct acpi_buffer *buffer) |
| { |
| int i = 0; |
| /* pnpacpi_build_resource_template allocates extra mem */ |
| int res_cnt = (buffer->length - 1) / sizeof(struct acpi_resource) - 1; |
| struct acpi_resource *resource = buffer->pointer; |
| int port = 0, irq = 0, dma = 0, mem = 0; |
| |
| pnp_dbg(&dev->dev, "encode %d resources\n", res_cnt); |
| while (i < res_cnt) { |
| switch (resource->type) { |
| case ACPI_RESOURCE_TYPE_IRQ: |
| pnpacpi_encode_irq(dev, resource, |
| pnp_get_resource(dev, IORESOURCE_IRQ, irq)); |
| irq++; |
| break; |
| |
| case ACPI_RESOURCE_TYPE_DMA: |
| pnpacpi_encode_dma(dev, resource, |
| pnp_get_resource(dev, IORESOURCE_DMA, dma)); |
| dma++; |
| break; |
| case ACPI_RESOURCE_TYPE_IO: |
| pnpacpi_encode_io(dev, resource, |
| pnp_get_resource(dev, IORESOURCE_IO, port)); |
| port++; |
| break; |
| case ACPI_RESOURCE_TYPE_FIXED_IO: |
| pnpacpi_encode_fixed_io(dev, resource, |
| pnp_get_resource(dev, IORESOURCE_IO, port)); |
| port++; |
| break; |
| case ACPI_RESOURCE_TYPE_MEMORY24: |
| pnpacpi_encode_mem24(dev, resource, |
| pnp_get_resource(dev, IORESOURCE_MEM, mem)); |
| mem++; |
| break; |
| case ACPI_RESOURCE_TYPE_MEMORY32: |
| pnpacpi_encode_mem32(dev, resource, |
| pnp_get_resource(dev, IORESOURCE_MEM, mem)); |
| mem++; |
| break; |
| case ACPI_RESOURCE_TYPE_FIXED_MEMORY32: |
| pnpacpi_encode_fixed_mem32(dev, resource, |
| pnp_get_resource(dev, IORESOURCE_MEM, mem)); |
| mem++; |
| break; |
| case ACPI_RESOURCE_TYPE_EXTENDED_IRQ: |
| pnpacpi_encode_ext_irq(dev, resource, |
| pnp_get_resource(dev, IORESOURCE_IRQ, irq)); |
| irq++; |
| break; |
| case ACPI_RESOURCE_TYPE_START_DEPENDENT: |
| case ACPI_RESOURCE_TYPE_END_DEPENDENT: |
| case ACPI_RESOURCE_TYPE_VENDOR: |
| case ACPI_RESOURCE_TYPE_END_TAG: |
| case ACPI_RESOURCE_TYPE_ADDRESS16: |
| case ACPI_RESOURCE_TYPE_ADDRESS32: |
| case ACPI_RESOURCE_TYPE_ADDRESS64: |
| case ACPI_RESOURCE_TYPE_EXTENDED_ADDRESS64: |
| case ACPI_RESOURCE_TYPE_GENERIC_REGISTER: |
| default: /* other type */ |
| dev_warn(&dev->dev, "can't encode unknown resource " |
| "type %d\n", resource->type); |
| return -EINVAL; |
| } |
| resource++; |
| i++; |
| } |
| return 0; |
| } |