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ddk: update

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devman: scan pci bus. Complete.

git-svn-id: svn://kolibrios.org@1631 a494cfbc-eb01-0410-851d-a64ba20cac60
This commit is contained in:
Sergey Semyonov (Serge) 2010-09-29 11:59:24 +00:00
parent 2d5920a514
commit 7f37261a3b
18 changed files with 1572 additions and 690 deletions
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2
drivers/ddk/linux/dmapool.c
View File

@ -24,7 +24,9 @@
#include <ddk.h> #include <ddk.h>
#include <linux/errno.h>
#include <linux/mutex.h> #include <linux/mutex.h>
#include <pci.h>
#include <syscall.h> #include <syscall.h>

4
drivers/devman/Makefile
View File

@ -1,4 +1,7 @@
CC = gcc CC = gcc
FASM = e:/fasm/fasm.exe FASM = e:/fasm/fasm.exe
@ -28,6 +31,7 @@ NAME_SRCS= acpi.c \
scan.c \ scan.c \
pci_irq.c \ pci_irq.c \
pci_root.c \ pci_root.c \
pci/access.c \
pci/pci.c \ pci/pci.c \
pci/probe.c \ pci/probe.c \
pci_bind.c pci_bind.c

6
drivers/devman/acpi_bus.h
View File

@ -33,12 +33,6 @@ struct acpi_device_ops {
acpi_op_notify notify; acpi_op_notify notify;
}; };
struct resource_list {
struct resource_list *next;
struct resource *res;
// struct pci_dev *dev;
};
enum acpi_bus_device_type { enum acpi_bus_device_type {
ACPI_BUS_TYPE_DEVICE = 0, ACPI_BUS_TYPE_DEVICE = 0,
ACPI_BUS_TYPE_POWER, ACPI_BUS_TYPE_POWER,

1
drivers/devman/acpica/Makefile
View File

@ -1,5 +1,4 @@
CC = gcc CC = gcc
DRV_DIR = $(CURDIR)/../.. DRV_DIR = $(CURDIR)/../..

9
drivers/devman/acpica/include/platform/ackolibri.h
View File

@ -116,9 +116,14 @@
#include "acgcc.h" #include "acgcc.h"
#include <linux\types.h>
#include <linux\mutex.h>
#include <linux/string.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <asm/atomic.h>
#include <linux/errno.h>
#include <ddk.h>
#include <linux/pci.h>
#include <syscall.h> #include <syscall.h>
#define ACPI_MACHINE_WIDTH 32 #define ACPI_MACHINE_WIDTH 32

BIN
drivers/devman/acpica/libacpica.a
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Binary file not shown.

89
drivers/devman/pci/access.c Normal file
View File

@ -0,0 +1,89 @@
#include <ddk.h>
#include <linux/errno.h>
#include <mutex.h>
#include <pci.h>
#include <syscall.h>
int pci_read_config_byte(struct pci_dev *dev, int where, u8 *val)
{
*val = PciRead8(dev->busnr, dev->devfn, where);
return 0;
}
int pci_read_config_word(struct pci_dev *dev, int where, u16 *val)
{
if ( where & 1)
return PCIBIOS_BAD_REGISTER_NUMBER;
*val = PciRead16(dev->busnr, dev->devfn, where);
return 0;
}
int pci_read_config_dword(struct pci_dev *dev, int where, u32 *val)
{
if ( where & 3)
return PCIBIOS_BAD_REGISTER_NUMBER;
*val = PciRead32(dev->busnr, dev->devfn, where);
return 0;
}
int pci_write_config_byte(struct pci_dev *dev, int where, u8 val)
{
PciWrite8(dev->busnr, dev->devfn, where, val);
return 0;
};
int pci_write_config_word(struct pci_dev *dev, int where, u16 val)
{
if ( where & 1)
return PCIBIOS_BAD_REGISTER_NUMBER;
PciWrite16(dev->busnr, dev->devfn, where, val);
return 0;
}
int pci_write_config_dword(struct pci_dev *dev, int where,
u32 val)
{
if ( where & 3)
return PCIBIOS_BAD_REGISTER_NUMBER;
PciWrite32(dev->busnr, dev->devfn, where, val);
return 0;
}
int pci_bus_read_config_byte (struct pci_bus *bus, u32 devfn,
int pos, u8 *value)
{
// raw_spin_lock_irqsave(&pci_lock, flags);
*value = PciRead8(bus->number, devfn, pos);
// raw_spin_unlock_irqrestore(&pci_lock, flags);
return 0;
}
int pci_bus_read_config_word (struct pci_bus *bus, u32 devfn,
int pos, u16 *value)
{
if ( pos & 1)
return PCIBIOS_BAD_REGISTER_NUMBER;
// raw_spin_lock_irqsave(&pci_lock, flags);
*value = PciRead16(bus->number, devfn, pos);
// raw_spin_unlock_irqrestore(&pci_lock, flags);
return 0;
}
int pci_bus_read_config_dword (struct pci_bus *bus, u32 devfn,
int pos, u16 *value)
{
if ( pos & 3)
return PCIBIOS_BAD_REGISTER_NUMBER;
// raw_spin_lock_irqsave(&pci_lock, flags);
*value = PciRead32(bus->number, devfn, pos);
// raw_spin_unlock_irqrestore(&pci_lock, flags);
return 0;
}

111
drivers/devman/pci/pci.c
View File

@ -5,7 +5,6 @@
#include <pci.h> #include <pci.h>
#include <syscall.h> #include <syscall.h>
LIST_HEAD(pci_root_buses);
#define IO_SPACE_LIMIT 0xffff #define IO_SPACE_LIMIT 0xffff
#define PCIBIOS_SUCCESSFUL 0x00 #define PCIBIOS_SUCCESSFUL 0x00
@ -108,59 +107,6 @@ int pci_find_capability(struct pci_dev *dev, int cap)
} }
static struct pci_bus * pci_alloc_bus(void)
{
struct pci_bus *b;
b = kzalloc(sizeof(*b), GFP_KERNEL);
if (b) {
INIT_LIST_HEAD(&b->node);
INIT_LIST_HEAD(&b->children);
INIT_LIST_HEAD(&b->devices);
INIT_LIST_HEAD(&b->slots);
INIT_LIST_HEAD(&b->resources);
}
return b;
}
struct pci_bus * pci_create_bus(int bus, struct pci_ops *ops, void *sysdata)
{
int error;
struct pci_bus *b, *b2;
b = pci_alloc_bus();
if (!b)
return NULL;
b->sysdata = sysdata;
b->ops = ops;
b2 = pci_find_bus(pci_domain_nr(b), bus);
if (b2) {
/* If we already got to this bus through a different bridge, ignore it */
dbgprintf("bus already known\n");
goto err_out;
}
// down_write(&pci_bus_sem);
list_add_tail(&b->node, &pci_root_buses);
// up_write(&pci_bus_sem);
b->number = b->secondary = bus;
b->resource[0] = &ioport_resource;
b->resource[1] = &iomem_resource;
return b;
err_out:
kfree(b);
return NULL;
}
static struct pci_bus *pci_do_find_bus(struct pci_bus *bus, unsigned char busnr) static struct pci_bus *pci_do_find_bus(struct pci_bus *bus, unsigned char busnr)
{ {
struct pci_bus* child; struct pci_bus* child;
@ -316,3 +262,60 @@ int pci_find_ext_capability(struct pci_dev *dev, int cap)
return 0; return 0;
} }
#if 0
u32 pci_probe = 0;
#define PCI_NOASSIGN_ROMS 0x80000
#define PCI_NOASSIGN_BARS 0x200000
static void pcibios_fixup_device_resources(struct pci_dev *dev)
{
struct resource *rom_r = &dev->resource[PCI_ROM_RESOURCE];
struct resource *bar_r;
int bar;
if (pci_probe & PCI_NOASSIGN_BARS) {
/*
* If the BIOS did not assign the BAR, zero out the
* resource so the kernel doesn't attmept to assign
* it later on in pci_assign_unassigned_resources
*/
for (bar = 0; bar <= PCI_STD_RESOURCE_END; bar++) {
bar_r = &dev->resource[bar];
if (bar_r->start == 0 && bar_r->end != 0) {
bar_r->flags = 0;
bar_r->end = 0;
}
}
}
if (pci_probe & PCI_NOASSIGN_ROMS) {
if (rom_r->parent)
return;
if (rom_r->start) {
/* we deal with BIOS assigned ROM later */
return;
}
rom_r->start = rom_r->end = rom_r->flags = 0;
}
}
/*
* Called after each bus is probed, but before its children
* are examined.
*/
void pcibios_fixup_bus(struct pci_bus *b)
{
struct pci_dev *dev;
/* root bus? */
// if (!b->parent)
// x86_pci_root_bus_res_quirks(b);
pci_read_bridge_bases(b);
list_for_each_entry(dev, &b->devices, bus_list)
pcibios_fixup_device_resources(dev);
}
#endif

776
drivers/devman/pci/probe.c
View File

@ -5,9 +5,708 @@
#include <pci.h> #include <pci.h>
#include <syscall.h> #include <syscall.h>
LIST_HEAD(pci_root_buses);
#define IO_SPACE_LIMIT 0xffff
#define LEGACY_IO_RESOURCE (IORESOURCE_IO | IORESOURCE_PCI_FIXED) #define LEGACY_IO_RESOURCE (IORESOURCE_IO | IORESOURCE_PCI_FIXED)
#define CARDBUS_LATENCY_TIMER 176 /* secondary latency timer */
#define CARDBUS_RESERVE_BUSNR 3
static int pcibios_assign_all_busses(void)
{
return 0;
};
/**
* pci_ari_enabled - query ARI forwarding status
* @bus: the PCI bus
*
* Returns 1 if ARI forwarding is enabled, or 0 if not enabled;
*/
static inline int pci_ari_enabled(struct pci_bus *bus)
{
return bus->self && bus->self->ari_enabled;
}
/*
* Translate the low bits of the PCI base
* to the resource type
*/
static inline unsigned int pci_calc_resource_flags(unsigned int flags)
{
if (flags & PCI_BASE_ADDRESS_SPACE_IO)
return IORESOURCE_IO;
if (flags & PCI_BASE_ADDRESS_MEM_PREFETCH)
return IORESOURCE_MEM | IORESOURCE_PREFETCH;
return IORESOURCE_MEM;
}
static u64 pci_size(u64 base, u64 maxbase, u64 mask)
{
u64 size = mask & maxbase; /* Find the significant bits */
if (!size)
return 0;
/* Get the lowest of them to find the decode size, and
from that the extent. */
size = (size & ~(size-1)) - 1;
/* base == maxbase can be valid only if the BAR has
already been programmed with all 1s. */
if (base == maxbase && ((base | size) & mask) != mask)
return 0;
return size;
}
static inline enum pci_bar_type decode_bar(struct resource *res, u32 bar)
{
if ((bar & PCI_BASE_ADDRESS_SPACE) == PCI_BASE_ADDRESS_SPACE_IO) {
res->flags = bar & ~PCI_BASE_ADDRESS_IO_MASK;
return pci_bar_io;
}
res->flags = bar & ~PCI_BASE_ADDRESS_MEM_MASK;
if (res->flags & PCI_BASE_ADDRESS_MEM_TYPE_64)
return pci_bar_mem64;
return pci_bar_mem32;
}
/**
* pci_read_base - read a PCI BAR
* @dev: the PCI device
* @type: type of the BAR
* @res: resource buffer to be filled in
* @pos: BAR position in the config space
*
* Returns 1 if the BAR is 64-bit, or 0 if 32-bit.
*/
int __pci_read_base(struct pci_dev *dev, enum pci_bar_type type,
struct resource *res, unsigned int pos)
{
u32 l, sz, mask;
u16 orig_cmd;
mask = type ? PCI_ROM_ADDRESS_MASK : ~0;
if (!dev->mmio_always_on) {
pci_read_config_word(dev, PCI_COMMAND, &orig_cmd);
pci_write_config_word(dev, PCI_COMMAND,
orig_cmd & ~(PCI_COMMAND_MEMORY | PCI_COMMAND_IO));
}
res->name = pci_name(dev);
pci_read_config_dword(dev, pos, &l);
pci_write_config_dword(dev, pos, l | mask);
pci_read_config_dword(dev, pos, &sz);
pci_write_config_dword(dev, pos, l);
if (!dev->mmio_always_on)
pci_write_config_word(dev, PCI_COMMAND, orig_cmd);
/*
* All bits set in sz means the device isn't working properly.
* If the BAR isn't implemented, all bits must be 0. If it's a
* memory BAR or a ROM, bit 0 must be clear; if it's an io BAR, bit
* 1 must be clear.
*/
if (!sz || sz == 0xffffffff)
goto fail;
/*
* I don't know how l can have all bits set. Copied from old code.
* Maybe it fixes a bug on some ancient platform.
*/
if (l == 0xffffffff)
l = 0;
if (type == pci_bar_unknown) {
type = decode_bar(res, l);
res->flags |= pci_calc_resource_flags(l) | IORESOURCE_SIZEALIGN;
if (type == pci_bar_io) {
l &= PCI_BASE_ADDRESS_IO_MASK;
mask = PCI_BASE_ADDRESS_IO_MASK & IO_SPACE_LIMIT;
} else {
l &= PCI_BASE_ADDRESS_MEM_MASK;
mask = (u32)PCI_BASE_ADDRESS_MEM_MASK;
}
} else {
res->flags |= (l & IORESOURCE_ROM_ENABLE);
l &= PCI_ROM_ADDRESS_MASK;
mask = (u32)PCI_ROM_ADDRESS_MASK;
}
if (type == pci_bar_mem64) {
u64 l64 = l;
u64 sz64 = sz;
u64 mask64 = mask | (u64)~0 << 32;
pci_read_config_dword(dev, pos + 4, &l);
pci_write_config_dword(dev, pos + 4, ~0);
pci_read_config_dword(dev, pos + 4, &sz);
pci_write_config_dword(dev, pos + 4, l);
l64 |= ((u64)l << 32);
sz64 |= ((u64)sz << 32);
sz64 = pci_size(l64, sz64, mask64);
if (!sz64)
goto fail;
if ((sizeof(resource_size_t) < 8) && (sz64 > 0x100000000ULL)) {
dbgprintf("%s reg %x: can't handle 64-bit BAR\n",
__FUNCTION__, pos);
goto fail;
}
res->flags |= IORESOURCE_MEM_64;
if ((sizeof(resource_size_t) < 8) && l) {
/* Address above 32-bit boundary; disable the BAR */
pci_write_config_dword(dev, pos, 0);
pci_write_config_dword(dev, pos + 4, 0);
res->start = 0;
res->end = sz64;
} else {
res->start = l64;
res->end = l64 + sz64;
dbgprintf("%s reg %x: %pR\n", __FUNCTION__, pos, res);
}
} else {
sz = pci_size(l, sz, mask);
if (!sz)
goto fail;
res->start = l;
res->end = l + sz;
dbgprintf("%s reg %x: %pR\n", __FUNCTION__, pos, res);
}
out:
return (type == pci_bar_mem64) ? 1 : 0;
fail:
res->flags = 0;
goto out;
}
static void pci_read_bases(struct pci_dev *dev, unsigned int howmany, int rom)
{
unsigned int pos, reg;
for (pos = 0; pos < howmany; pos++) {
struct resource *res = &dev->resource[pos];
reg = PCI_BASE_ADDRESS_0 + (pos << 2);
pos += __pci_read_base(dev, pci_bar_unknown, res, reg);
}
if (rom) {
struct resource *res = &dev->resource[PCI_ROM_RESOURCE];
dev->rom_base_reg = rom;
res->flags = IORESOURCE_MEM | IORESOURCE_PREFETCH |
IORESOURCE_READONLY | IORESOURCE_CACHEABLE |
IORESOURCE_SIZEALIGN;
__pci_read_base(dev, pci_bar_mem32, res, rom);
}
}
#if 0
void pci_read_bridge_bases(struct pci_bus *child)
{
struct pci_dev *dev = child->self;
struct resource *res;
int i;
if (pci_is_root_bus(child)) /* It's a host bus, nothing to read */
return;
dbgprintf("PCI bridge to [bus %02x-%02x]%s\n",
child->secondary, child->subordinate,
dev->transparent ? " (subtractive decode)" : "");
pci_bus_remove_resources(child);
for (i = 0; i < PCI_BRIDGE_RESOURCE_NUM; i++)
child->resource[i] = &dev->resource[PCI_BRIDGE_RESOURCES+i];
pci_read_bridge_io(child);
pci_read_bridge_mmio(child);
pci_read_bridge_mmio_pref(child);
if (dev->transparent) {
pci_bus_for_each_resource(child->parent, res, i) {
if (res) {
pci_bus_add_resource(child, res,
PCI_SUBTRACTIVE_DECODE);
dbgprintf(" bridge window %pR (subtractive decode)\n", res);
}
}
}
}
#endif
static struct pci_bus * pci_alloc_bus(void)
{
struct pci_bus *b;
b = kzalloc(sizeof(*b), GFP_KERNEL);
if (b) {
INIT_LIST_HEAD(&b->node);
INIT_LIST_HEAD(&b->children);
INIT_LIST_HEAD(&b->devices);
INIT_LIST_HEAD(&b->slots);
INIT_LIST_HEAD(&b->resources);
// b->max_bus_speed = PCI_SPEED_UNKNOWN;
// b->cur_bus_speed = PCI_SPEED_UNKNOWN;
}
return b;
}
#if 0
static unsigned char pcix_bus_speed[] = {
PCI_SPEED_UNKNOWN, /* 0 */
PCI_SPEED_66MHz_PCIX, /* 1 */
PCI_SPEED_100MHz_PCIX, /* 2 */
PCI_SPEED_133MHz_PCIX, /* 3 */
PCI_SPEED_UNKNOWN, /* 4 */
PCI_SPEED_66MHz_PCIX_ECC, /* 5 */
PCI_SPEED_100MHz_PCIX_ECC, /* 6 */
PCI_SPEED_133MHz_PCIX_ECC, /* 7 */
PCI_SPEED_UNKNOWN, /* 8 */
PCI_SPEED_66MHz_PCIX_266, /* 9 */
PCI_SPEED_100MHz_PCIX_266, /* A */
PCI_SPEED_133MHz_PCIX_266, /* B */
PCI_SPEED_UNKNOWN, /* C */
PCI_SPEED_66MHz_PCIX_533, /* D */
PCI_SPEED_100MHz_PCIX_533, /* E */
PCI_SPEED_133MHz_PCIX_533 /* F */
};
static unsigned char pcie_link_speed[] = {
PCI_SPEED_UNKNOWN, /* 0 */
PCIE_SPEED_2_5GT, /* 1 */
PCIE_SPEED_5_0GT, /* 2 */
PCIE_SPEED_8_0GT, /* 3 */
PCI_SPEED_UNKNOWN, /* 4 */
PCI_SPEED_UNKNOWN, /* 5 */
PCI_SPEED_UNKNOWN, /* 6 */
PCI_SPEED_UNKNOWN, /* 7 */
PCI_SPEED_UNKNOWN, /* 8 */
PCI_SPEED_UNKNOWN, /* 9 */
PCI_SPEED_UNKNOWN, /* A */
PCI_SPEED_UNKNOWN, /* B */
PCI_SPEED_UNKNOWN, /* C */
PCI_SPEED_UNKNOWN, /* D */
PCI_SPEED_UNKNOWN, /* E */
PCI_SPEED_UNKNOWN /* F */
};
static void pci_set_bus_speed(struct pci_bus *bus)
{
struct pci_dev *bridge = bus->self;
int pos;
pos = pci_find_capability(bridge, PCI_CAP_ID_AGP);
if (!pos)
pos = pci_find_capability(bridge, PCI_CAP_ID_AGP3);
if (pos) {
u32 agpstat, agpcmd;
pci_read_config_dword(bridge, pos + PCI_AGP_STATUS, &agpstat);
bus->max_bus_speed = agp_speed(agpstat & 8, agpstat & 7);
pci_read_config_dword(bridge, pos + PCI_AGP_COMMAND, &agpcmd);
bus->cur_bus_speed = agp_speed(agpstat & 8, agpcmd & 7);
}
pos = pci_find_capability(bridge, PCI_CAP_ID_PCIX);
if (pos) {
u16 status;
enum pci_bus_speed max;
pci_read_config_word(bridge, pos + 2, &status);
if (status & 0x8000) {
max = PCI_SPEED_133MHz_PCIX_533;
} else if (status & 0x4000) {
max = PCI_SPEED_133MHz_PCIX_266;
} else if (status & 0x0002) {
if (((status >> 12) & 0x3) == 2) {
max = PCI_SPEED_133MHz_PCIX_ECC;
} else {
max = PCI_SPEED_133MHz_PCIX;
}
} else {
max = PCI_SPEED_66MHz_PCIX;
}
bus->max_bus_speed = max;
bus->cur_bus_speed = pcix_bus_speed[(status >> 6) & 0xf];
return;
}
pos = pci_find_capability(bridge, PCI_CAP_ID_EXP);
if (pos) {
u32 linkcap;
u16 linksta;
pci_read_config_dword(bridge, pos + PCI_EXP_LNKCAP, &linkcap);
bus->max_bus_speed = pcie_link_speed[linkcap & 0xf];
pci_read_config_word(bridge, pos + PCI_EXP_LNKSTA, &linksta);
pcie_update_link_speed(bus, linksta);
}
}
#endif
static struct pci_bus *pci_alloc_child_bus(struct pci_bus *parent,
struct pci_dev *bridge, int busnr)
{
struct pci_bus *child;
int i;
/*
* Allocate a new bus, and inherit stuff from the parent..
*/
child = pci_alloc_bus();
if (!child)
return NULL;
child->parent = parent;
child->ops = parent->ops;
child->sysdata = parent->sysdata;
child->bus_flags = parent->bus_flags;
/* initialize some portions of the bus device, but don't register it
* now as the parent is not properly set up yet. This device will get
* registered later in pci_bus_add_devices()
*/
// child->dev.class = &pcibus_class;
// dev_set_name(&child->dev, "%04x:%02x", pci_domain_nr(child), busnr);
/*
* Set up the primary, secondary and subordinate
* bus numbers.
*/
child->number = child->secondary = busnr;
child->primary = parent->secondary;
child->subordinate = 0xff;
if (!bridge)
return child;
child->self = bridge;
// child->bridge = get_device(&bridge->dev);
// pci_set_bus_speed(child);
/* Set up default resource pointers and names.. */
for (i = 0; i < PCI_BRIDGE_RESOURCE_NUM; i++) {
child->resource[i] = &bridge->resource[PCI_BRIDGE_RESOURCES+i];
child->resource[i]->name = child->name;
}
bridge->subordinate = child;
return child;
}
struct pci_bus* pci_add_new_bus(struct pci_bus *parent, struct pci_dev *dev, int busnr)
{
struct pci_bus *child;
child = pci_alloc_child_bus(parent, dev, busnr);
if (child) {
// down_write(&pci_bus_sem);
list_add_tail(&child->node, &parent->children);
// up_write(&pci_bus_sem);
}
return child;
}
static void pci_fixup_parent_subordinate_busnr(struct pci_bus *child, int max)
{
struct pci_bus *parent = child->parent;
/* Attempts to fix that up are really dangerous unless
we're going to re-assign all bus numbers. */
if (!pcibios_assign_all_busses())
return;
while (parent->parent && parent->subordinate < max) {
parent->subordinate = max;
pci_write_config_byte(parent->self, PCI_SUBORDINATE_BUS, max);
parent = parent->parent;
}
}
/*
* If it's a bridge, configure it and scan the bus behind it.
* For CardBus bridges, we don't scan behind as the devices will
* be handled by the bridge driver itself.
*
* We need to process bridges in two passes -- first we scan those
* already configured by the BIOS and after we are done with all of
* them, we proceed to assigning numbers to the remaining buses in
* order to avoid overlaps between old and new bus numbers.
*/
int pci_scan_bridge(struct pci_bus *bus, struct pci_dev *dev, int max, int pass)
{
struct pci_bus *child;
int is_cardbus = (dev->hdr_type == PCI_HEADER_TYPE_CARDBUS);
u32 buses, i, j = 0;
u16 bctl;
u8 primary, secondary, subordinate;
int broken = 0;
pci_read_config_dword(dev, PCI_PRIMARY_BUS, &buses);
primary = buses & 0xFF;
secondary = (buses >> 8) & 0xFF;
subordinate = (buses >> 16) & 0xFF;
dbgprintf("scanning [bus %02x-%02x] behind bridge, pass %d\n",
secondary, subordinate, pass);
/* Check if setup is sensible at all */
if (!pass &&
(primary != bus->number || secondary <= bus->number)) {
dbgprintf("bus configuration invalid, reconfiguring\n");
broken = 1;
}
/* Disable MasterAbortMode during probing to avoid reporting
of bus errors (in some architectures) */
pci_read_config_word(dev, PCI_BRIDGE_CONTROL, &bctl);
pci_write_config_word(dev, PCI_BRIDGE_CONTROL,
bctl & ~PCI_BRIDGE_CTL_MASTER_ABORT);
if ((secondary || subordinate) && !pcibios_assign_all_busses() &&
!is_cardbus && !broken) {
unsigned int cmax;
/*
* Bus already configured by firmware, process it in the first
* pass and just note the configuration.
*/
if (pass)
goto out;
/*
* If we already got to this bus through a different bridge,
* don't re-add it. This can happen with the i450NX chipset.
*
* However, we continue to descend down the hierarchy and
* scan remaining child buses.
*/
child = pci_find_bus(pci_domain_nr(bus), secondary);
if (!child) {
child = pci_add_new_bus(bus, dev, secondary);
if (!child)
goto out;
child->primary = primary;
child->subordinate = subordinate;
child->bridge_ctl = bctl;
}
cmax = pci_scan_child_bus(child);
if (cmax > max)
max = cmax;
if (child->subordinate > max)
max = child->subordinate;
} else {
/*
* We need to assign a number to this bus which we always
* do in the second pass.
*/
if (!pass) {
if (pcibios_assign_all_busses() || broken)
/* Temporarily disable forwarding of the
configuration cycles on all bridges in
this bus segment to avoid possible
conflicts in the second pass between two
bridges programmed with overlapping
bus ranges. */
pci_write_config_dword(dev, PCI_PRIMARY_BUS,
buses & ~0xffffff);
goto out;
}
/* Clear errors */
pci_write_config_word(dev, PCI_STATUS, 0xffff);
/* Prevent assigning a bus number that already exists.
* This can happen when a bridge is hot-plugged */
if (pci_find_bus(pci_domain_nr(bus), max+1))
goto out;
child = pci_add_new_bus(bus, dev, ++max);
buses = (buses & 0xff000000)
| ((unsigned int)(child->primary) << 0)
| ((unsigned int)(child->secondary) << 8)
| ((unsigned int)(child->subordinate) << 16);
/*
* yenta.c forces a secondary latency timer of 176.
* Copy that behaviour here.
*/
if (is_cardbus) {
buses &= ~0xff000000;
buses |= CARDBUS_LATENCY_TIMER << 24;
}
/*
* We need to blast all three values with a single write.
*/
pci_write_config_dword(dev, PCI_PRIMARY_BUS, buses);
if (!is_cardbus) {
child->bridge_ctl = bctl;
/*
* Adjust subordinate busnr in parent buses.
* We do this before scanning for children because
* some devices may not be detected if the bios
* was lazy.
*/
pci_fixup_parent_subordinate_busnr(child, max);
/* Now we can scan all subordinate buses... */
max = pci_scan_child_bus(child);
/*
* now fix it up again since we have found
* the real value of max.
*/
pci_fixup_parent_subordinate_busnr(child, max);
} else {
/*
* For CardBus bridges, we leave 4 bus numbers
* as cards with a PCI-to-PCI bridge can be
* inserted later.
*/
for (i=0; i<CARDBUS_RESERVE_BUSNR; i++) {
struct pci_bus *parent = bus;
if (pci_find_bus(pci_domain_nr(bus),
max+i+1))
break;
while (parent->parent) {
if ((!pcibios_assign_all_busses()) &&
(parent->subordinate > max) &&
(parent->subordinate <= max+i)) {
j = 1;
}
parent = parent->parent;
}
if (j) {
/*
* Often, there are two cardbus bridges
* -- try to leave one valid bus number
* for each one.
*/
i /= 2;
break;
}
}
max += i;
pci_fixup_parent_subordinate_busnr(child, max);
}
/*
* Set the subordinate bus number to its real value.
*/
child->subordinate = max;
pci_write_config_byte(dev, PCI_SUBORDINATE_BUS, max);
}
vsprintf(child->name,
(is_cardbus ? "PCI CardBus %04x:%02x" : "PCI Bus %04x:%02x"),
pci_domain_nr(bus), child->number);
/* Has only triggered on CardBus, fixup is in yenta_socket */
while (bus->parent) {
if ((child->subordinate > bus->subordinate) ||
(child->number > bus->subordinate) ||
(child->number < bus->number) ||
(child->subordinate < bus->number)) {
dbgprintf("[bus %02x-%02x] %s "
"hidden behind%s bridge %s [bus %02x-%02x]\n",
child->number, child->subordinate,
(bus->number > child->subordinate &&
bus->subordinate < child->number) ?
"wholly" : "partially",
bus->self->transparent ? " transparent" : "",
"FIX BRIDGE NAME",
bus->number, bus->subordinate);
}
bus = bus->parent;
}
out:
pci_write_config_word(dev, PCI_BRIDGE_CONTROL, bctl);
return max;
}
void set_pcie_port_type(struct pci_dev *pdev)
{
int pos;
u16 reg16;
pos = pci_find_capability(pdev, PCI_CAP_ID_EXP);
if (!pos)
return;
pdev->is_pcie = 1;
pdev->pcie_cap = pos;
pci_read_config_word(pdev, pos + PCI_EXP_FLAGS, &reg16);
pdev->pcie_type = (reg16 & PCI_EXP_FLAGS_TYPE) >> 4;
}
void set_pcie_hotplug_bridge(struct pci_dev *pdev)
{
int pos;
u16 reg16;
u32 reg32;
pos = pci_pcie_cap(pdev);
if (!pos)
return;
pci_read_config_word(pdev, pos + PCI_EXP_FLAGS, &reg16);
if (!(reg16 & PCI_EXP_FLAGS_SLOT))
return;
pci_read_config_dword(pdev, pos + PCI_EXP_SLTCAP, &reg32);
if (reg32 & PCI_EXP_SLTCAP_HPC)
pdev->is_hotplug_bridge = 1;
}
/*
* Read interrupt line and base address registers.
* The architecture-dependent code can tweak these, of course.
*/
static void pci_read_irq(struct pci_dev *dev)
{
unsigned char irq;
pci_read_config_byte(dev, PCI_INTERRUPT_PIN, &irq);
dev->pin = irq;
if (irq)
pci_read_config_byte(dev, PCI_INTERRUPT_LINE, &irq);
dev->irq = irq;
}
/** /**
* pci_setup_device - fill in class and map information of a device * pci_setup_device - fill in class and map information of a device
* @dev: the device structure to fill * @dev: the device structure to fill
@ -176,7 +875,9 @@ static struct pci_dev *pci_scan_device(struct pci_bus *bus, int devfn)
/* some broken boards return 0 or ~0 if a slot is empty: */ /* some broken boards return 0 or ~0 if a slot is empty: */
if (l == 0xffffffff || l == 0x00000000 || if (l == 0xffffffff || l == 0x00000000 ||
l == 0x0000ffff || l == 0xffff0000) l == 0x0000ffff || l == 0xffff0000 ||
(l & 0xffff0000) == 0xffff0000 ||
(l & 0x0000ffff) == 0x0000ffff )
return NULL; return NULL;
/* Configuration request Retry Status */ /* Configuration request Retry Status */
@ -186,7 +887,7 @@ static struct pci_dev *pci_scan_device(struct pci_bus *bus, int devfn)
if (pci_bus_read_config_dword(bus, devfn, PCI_VENDOR_ID, &l)) if (pci_bus_read_config_dword(bus, devfn, PCI_VENDOR_ID, &l))
return NULL; return NULL;
/* Card hasn't responded in 60 seconds? Must be stuck. */ /* Card hasn't responded in 60 seconds? Must be stuck. */
if (delay > 60 * 1000) { if (timeout > 60 * 1000) {
printk(KERN_WARNING "pci %04x:%02x:%02x.%d: not " printk(KERN_WARNING "pci %04x:%02x:%02x.%d: not "
"responding\n", pci_domain_nr(bus), "responding\n", pci_domain_nr(bus),
bus->number, PCI_SLOT(devfn), bus->number, PCI_SLOT(devfn),
@ -212,6 +913,36 @@ static struct pci_dev *pci_scan_device(struct pci_bus *bus, int devfn)
return dev; return dev;
} }
void pci_device_add(struct pci_dev *dev, struct pci_bus *bus)
{
// device_initialize(&dev->dev);
// dev->dev.release = pci_release_dev;
// pci_dev_get(dev);
// dev->dev.dma_mask = &dev->dma_mask;
// dev->dev.dma_parms = &dev->dma_parms;
// dev->dev.coherent_dma_mask = 0xffffffffull;
// pci_set_dma_max_seg_size(dev, 65536);
// pci_set_dma_seg_boundary(dev, 0xffffffff);
/* Fix up broken headers */
// pci_fixup_device(pci_fixup_header, dev);
/* Clear the state_saved flag. */
dev->state_saved = false;
/* Initialize various capabilities */
// pci_init_capabilities(dev);
/*
* Add the device to our list of discovered devices
* and the bus list for fixup functions, etc.
*/
// down_write(&pci_bus_sem);
list_add_tail(&dev->bus_list, &bus->devices);
// up_write(&pci_bus_sem);
}
struct pci_dev * pci_scan_single_device(struct pci_bus *bus, int devfn) struct pci_dev * pci_scan_single_device(struct pci_bus *bus, int devfn)
{ {
@ -312,8 +1043,8 @@ int pci_scan_slot(struct pci_bus *bus, int devfn)
} }
/* only one slot has pcie device */ /* only one slot has pcie device */
if (bus->self && nr) // if (bus->self && nr)
pcie_aspm_init_link_state(bus->self); // pcie_aspm_init_link_state(bus->self);
return nr; return nr;
} }
@ -339,7 +1070,7 @@ unsigned int pci_scan_child_bus(struct pci_bus *bus)
*/ */
if (!bus->is_added) { if (!bus->is_added) {
dbgprintf("fixups for bus\n"); dbgprintf("fixups for bus\n");
pcibios_fixup_bus(bus); // pcibios_fixup_bus(bus);
if (pci_is_root_bus(bus)) if (pci_is_root_bus(bus))
bus->is_added = 1; bus->is_added = 1;
} }
@ -417,3 +1148,38 @@ int pci_cfg_space_size(struct pci_dev *dev)
} }
struct pci_bus * pci_create_bus(int bus, struct pci_ops *ops, void *sysdata)
{
int error;
struct pci_bus *b, *b2;
b = pci_alloc_bus();
if (!b)
return NULL;
b->sysdata = sysdata;
b->ops = ops;
b2 = pci_find_bus(pci_domain_nr(b), bus);
if (b2) {
/* If we already got to this bus through a different bridge, ignore it */
dbgprintf("bus already known\n");
goto err_out;
}
// down_write(&pci_bus_sem);
list_add_tail(&b->node, &pci_root_buses);
// up_write(&pci_bus_sem);
b->number = b->secondary = bus;
b->resource[0] = &ioport_resource;
b->resource[1] = &iomem_resource;
return b;
err_out:
kfree(b);
return NULL;
}

3
drivers/include/ddk.h
View File

@ -1,8 +1,11 @@
#ifndef __DDK_H__ #ifndef __DDK_H__
#define __DDK_H__ #define __DDK_H__
#include <kernel.h> #include <kernel.h>
#include <mutex.h>
#define OS_BASE 0x80000000 #define OS_BASE 0x80000000

321
drivers/include/linux/asm/atomic.h
View File

@ -1,5 +1,318 @@
#ifdef CONFIG_X86_32 #ifndef _ASM_X86_ATOMIC_H
# include "atomic_32.h" #define _ASM_X86_ATOMIC_H
#else
# include "atomic_64.h" #include <linux/compiler.h>
#include <linux/types.h>
//#include <asm/processor.h>
//#include <asm/alternative.h>
#include <asm/cmpxchg.h>
/*
* Atomic operations that C can't guarantee us. Useful for
* resource counting etc..
*/
#define ATOMIC_INIT(i) { (i) }
/**
* atomic_read - read atomic variable
* @v: pointer of type atomic_t
*
* Atomically reads the value of @v.
*/
static inline int atomic_read(const atomic_t *v)
{
return (*(volatile int *)&(v)->counter);
}
/**
* atomic_set - set atomic variable
* @v: pointer of type atomic_t
* @i: required value
*
* Atomically sets the value of @v to @i.
*/
static inline void atomic_set(atomic_t *v, int i)
{
v->counter = i;
}
/**
* atomic_add - add integer to atomic variable
* @i: integer value to add
* @v: pointer of type atomic_t
*
* Atomically adds @i to @v.
*/
static inline void atomic_add(int i, atomic_t *v)
{
asm volatile(LOCK_PREFIX "addl %1,%0"
: "+m" (v->counter)
: "ir" (i));
}
/**
* atomic_sub - subtract integer from atomic variable
* @i: integer value to subtract
* @v: pointer of type atomic_t
*
* Atomically subtracts @i from @v.
*/
static inline void atomic_sub(int i, atomic_t *v)
{
asm volatile(LOCK_PREFIX "subl %1,%0"
: "+m" (v->counter)
: "ir" (i));
}
/**
* atomic_sub_and_test - subtract value from variable and test result
* @i: integer value to subtract
* @v: pointer of type atomic_t
*
* Atomically subtracts @i from @v and returns
* true if the result is zero, or false for all
* other cases.
*/
static inline int atomic_sub_and_test(int i, atomic_t *v)
{
unsigned char c;
asm volatile(LOCK_PREFIX "subl %2,%0; sete %1"
: "+m" (v->counter), "=qm" (c)
: "ir" (i) : "memory");
return c;
}
/**
* atomic_inc - increment atomic variable
* @v: pointer of type atomic_t
*
* Atomically increments @v by 1.
*/
static inline void atomic_inc(atomic_t *v)
{
asm volatile(LOCK_PREFIX "incl %0"
: "+m" (v->counter));
}
/**
* atomic_dec - decrement atomic variable
* @v: pointer of type atomic_t
*
* Atomically decrements @v by 1.
*/
static inline void atomic_dec(atomic_t *v)
{
asm volatile(LOCK_PREFIX "decl %0"
: "+m" (v->counter));
}
/**
* atomic_dec_and_test - decrement and test
* @v: pointer of type atomic_t
*
* Atomically decrements @v by 1 and
* returns true if the result is 0, or false for all other
* cases.
*/
static inline int atomic_dec_and_test(atomic_t *v)
{
unsigned char c;
asm volatile(LOCK_PREFIX "decl %0; sete %1"
: "+m" (v->counter), "=qm" (c)
: : "memory");
return c != 0;
}
/**
* atomic_inc_and_test - increment and test
* @v: pointer of type atomic_t
*
* Atomically increments @v by 1
* and returns true if the result is zero, or false for all
* other cases.
*/
static inline int atomic_inc_and_test(atomic_t *v)
{
unsigned char c;
asm volatile(LOCK_PREFIX "incl %0; sete %1"
: "+m" (v->counter), "=qm" (c)
: : "memory");
return c != 0;
}
/**
* atomic_add_negative - add and test if negative
* @i: integer value to add
* @v: pointer of type atomic_t
*
* Atomically adds @i to @v and returns true
* if the result is negative, or false when
* result is greater than or equal to zero.
*/
static inline int atomic_add_negative(int i, atomic_t *v)
{
unsigned char c;
asm volatile(LOCK_PREFIX "addl %2,%0; sets %1"
: "+m" (v->counter), "=qm" (c)
: "ir" (i) : "memory");
return c;
}
/**
* atomic_add_return - add integer and return
* @i: integer value to add
* @v: pointer of type atomic_t
*
* Atomically adds @i to @v and returns @i + @v
*/
static inline int atomic_add_return(int i, atomic_t *v)
{
int __i;
#ifdef CONFIG_M386
unsigned long flags;
if (unlikely(boot_cpu_data.x86 <= 3))
goto no_xadd;
#endif #endif
/* Modern 486+ processor */
__i = i;
asm volatile(LOCK_PREFIX "xaddl %0, %1"
: "+r" (i), "+m" (v->counter)
: : "memory");
return i + __i;
#ifdef CONFIG_M386
no_xadd: /* Legacy 386 processor */
raw_local_irq_save(flags);
__i = atomic_read(v);
atomic_set(v, i + __i);
raw_local_irq_restore(flags);
return i + __i;
#endif
}
/**
* atomic_sub_return - subtract integer and return
* @v: pointer of type atomic_t
* @i: integer value to subtract
*
* Atomically subtracts @i from @v and returns @v - @i
*/
static inline int atomic_sub_return(int i, atomic_t *v)
{
return atomic_add_return(-i, v);
}
#define atomic_inc_return(v) (atomic_add_return(1, v))
#define atomic_dec_return(v) (atomic_sub_return(1, v))
static inline int atomic_cmpxchg(atomic_t *v, int old, int new)
{
return cmpxchg(&v->counter, old, new);
}
static inline int atomic_xchg(atomic_t *v, int new)
{
return xchg(&v->counter, new);
}
/**
* atomic_add_unless - add unless the number is already a given value
* @v: pointer of type atomic_t
* @a: the amount to add to v...
* @u: ...unless v is equal to u.
*
* Atomically adds @a to @v, so long as @v was not already @u.
* Returns non-zero if @v was not @u, and zero otherwise.
*/
static inline int atomic_add_unless(atomic_t *v, int a, int u)
{
int c, old;
c = atomic_read(v);
for (;;) {
if (unlikely(c == (u)))
break;
old = atomic_cmpxchg((v), c, c + (a));
if (likely(old == c))
break;
c = old;
}
return c != (u);
}
#define atomic_inc_not_zero(v) atomic_add_unless((v), 1, 0)
/*
* atomic_dec_if_positive - decrement by 1 if old value positive
* @v: pointer of type atomic_t
*
* The function returns the old value of *v minus 1, even if
* the atomic variable, v, was not decremented.
*/
static inline int atomic_dec_if_positive(atomic_t *v)
{
int c, old, dec;
c = atomic_read(v);
for (;;) {
dec = c - 1;
if (unlikely(dec < 0))
break;
old = atomic_cmpxchg((v), c, dec);
if (likely(old == c))
break;
c = old;
}
return dec;
}
/**
* atomic_inc_short - increment of a short integer
* @v: pointer to type int
*
* Atomically adds 1 to @v
* Returns the new value of @u
*/
static inline short int atomic_inc_short(short int *v)
{
asm(LOCK_PREFIX "addw $1, %0" : "+m" (*v));
return *v;
}
#ifdef CONFIG_X86_64
/**
* atomic_or_long - OR of two long integers
* @v1: pointer to type unsigned long
* @v2: pointer to type unsigned long
*
* Atomically ORs @v1 and @v2
* Returns the result of the OR
*/
static inline void atomic_or_long(unsigned long *v1, unsigned long v2)
{
asm(LOCK_PREFIX "orq %1, %0" : "+m" (*v1) : "r" (v2));
}
#endif
/* These are x86-specific, used by some header files */
#define atomic_clear_mask(mask, addr) \
asm volatile(LOCK_PREFIX "andl %0,%1" \
: : "r" (~(mask)), "m" (*(addr)) : "memory")
#define atomic_set_mask(mask, addr) \
asm volatile(LOCK_PREFIX "orl %0,%1" \
: : "r" ((unsigned)(mask)), "m" (*(addr)) \
: "memory")
/* Atomic operations are already serializing on x86 */
#define smp_mb__before_atomic_dec() barrier()
#define smp_mb__after_atomic_dec() barrier()
#define smp_mb__before_atomic_inc() barrier()
#define smp_mb__after_atomic_inc() barrier()
//#include <asm-generic/atomic-long.h>
#endif /* _ASM_X86_ATOMIC_H */

415
drivers/include/linux/asm/atomic_32.h
View File

@ -1,415 +0,0 @@
#ifndef _ASM_X86_ATOMIC_32_H
#define _ASM_X86_ATOMIC_32_H
#include <linux/compiler.h>
#include <linux/types.h>
//#include <asm/processor.h>
#include <asm/cmpxchg.h>
/*
* Atomic operations that C can't guarantee us. Useful for
* resource counting etc..
*/
#define ATOMIC_INIT(i) { (i) }
/**
* atomic_read - read atomic variable
* @v: pointer of type atomic_t
*
* Atomically reads the value of @v.
*/
static inline int atomic_read(const atomic_t *v)
{
return v->counter;
}
/**
* atomic_set - set atomic variable
* @v: pointer of type atomic_t
* @i: required value
*
* Atomically sets the value of @v to @i.
*/
static inline void atomic_set(atomic_t *v, int i)
{
v->counter = i;
}
/**
* atomic_add - add integer to atomic variable
* @i: integer value to add
* @v: pointer of type atomic_t
*
* Atomically adds @i to @v.
*/
static inline void atomic_add(int i, atomic_t *v)
{
asm volatile(LOCK_PREFIX "addl %1,%0"
: "+m" (v->counter)
: "ir" (i));
}
/**
* atomic_sub - subtract integer from atomic variable
* @i: integer value to subtract
* @v: pointer of type atomic_t
*
* Atomically subtracts @i from @v.
*/
static inline void atomic_sub(int i, atomic_t *v)
{
asm volatile(LOCK_PREFIX "subl %1,%0"
: "+m" (v->counter)
: "ir" (i));
}
/**
* atomic_sub_and_test - subtract value from variable and test result
* @i: integer value to subtract
* @v: pointer of type atomic_t
*
* Atomically subtracts @i from @v and returns
* true if the result is zero, or false for all
* other cases.
*/
static inline int atomic_sub_and_test(int i, atomic_t *v)
{
unsigned char c;
asm volatile(LOCK_PREFIX "subl %2,%0; sete %1"
: "+m" (v->counter), "=qm" (c)
: "ir" (i) : "memory");
return c;
}
/**
* atomic_inc - increment atomic variable
* @v: pointer of type atomic_t
*
* Atomically increments @v by 1.
*/
static inline void atomic_inc(atomic_t *v)
{
asm volatile(LOCK_PREFIX "incl %0"
: "+m" (v->counter));
}
/**
* atomic_dec - decrement atomic variable
* @v: pointer of type atomic_t
*
* Atomically decrements @v by 1.
*/
static inline void atomic_dec(atomic_t *v)
{
asm volatile(LOCK_PREFIX "decl %0"
: "+m" (v->counter));
}
/**
* atomic_dec_and_test - decrement and test
* @v: pointer of type atomic_t
*
* Atomically decrements @v by 1 and
* returns true if the result is 0, or false for all other
* cases.
*/
static inline int atomic_dec_and_test(atomic_t *v)
{
unsigned char c;
asm volatile(LOCK_PREFIX "decl %0; sete %1"
: "+m" (v->counter), "=qm" (c)
: : "memory");
return c != 0;
}
/**
* atomic_inc_and_test - increment and test
* @v: pointer of type atomic_t
*
* Atomically increments @v by 1
* and returns true if the result is zero, or false for all
* other cases.
*/
static inline int atomic_inc_and_test(atomic_t *v)
{
unsigned char c;
asm volatile(LOCK_PREFIX "incl %0; sete %1"
: "+m" (v->counter), "=qm" (c)
: : "memory");
return c != 0;
}
/**
* atomic_add_negative - add and test if negative
* @v: pointer of type atomic_t
* @i: integer value to add
*
* Atomically adds @i to @v and returns true
* if the result is negative, or false when
* result is greater than or equal to zero.
*/
static inline int atomic_add_negative(int i, atomic_t *v)
{
unsigned char c;
asm volatile(LOCK_PREFIX "addl %2,%0; sets %1"
: "+m" (v->counter), "=qm" (c)
: "ir" (i) : "memory");
return c;
}
/**
* atomic_add_return - add integer and return
* @v: pointer of type atomic_t
* @i: integer value to add
*
* Atomically adds @i to @v and returns @i + @v
*/
static inline int atomic_add_return(int i, atomic_t *v)
{
int __i;
#ifdef CONFIG_M386
unsigned long flags;
if (unlikely(boot_cpu_data.x86 <= 3))
goto no_xadd;
#endif
/* Modern 486+ processor */
__i = i;
asm volatile(LOCK_PREFIX "xaddl %0, %1"
: "+r" (i), "+m" (v->counter)
: : "memory");
return i + __i;
#ifdef CONFIG_M386
no_xadd: /* Legacy 386 processor */
local_irq_save(flags);
__i = atomic_read(v);
atomic_set(v, i + __i);
local_irq_restore(flags);
return i + __i;
#endif
}
/**
* atomic_sub_return - subtract integer and return
* @v: pointer of type atomic_t
* @i: integer value to subtract
*
* Atomically subtracts @i from @v and returns @v - @i
*/
static inline int atomic_sub_return(int i, atomic_t *v)
{
return atomic_add_return(-i, v);
}
static inline int atomic_cmpxchg(atomic_t *v, int old, int new)
{
return cmpxchg(&v->counter, old, new);
}
static inline int atomic_xchg(atomic_t *v, int new)
{
return xchg(&v->counter, new);
}
/**
* atomic_add_unless - add unless the number is already a given value
* @v: pointer of type atomic_t
* @a: the amount to add to v...
* @u: ...unless v is equal to u.
*
* Atomically adds @a to @v, so long as @v was not already @u.
* Returns non-zero if @v was not @u, and zero otherwise.
*/
static inline int atomic_add_unless(atomic_t *v, int a, int u)
{
int c, old;
c = atomic_read(v);
for (;;) {
if (unlikely(c == (u)))
break;
old = atomic_cmpxchg((v), c, c + (a));
if (likely(old == c))
break;
c = old;
}
return c != (u);
}
#define atomic_inc_not_zero(v) atomic_add_unless((v), 1, 0)
#define atomic_inc_return(v) (atomic_add_return(1, v))
#define atomic_dec_return(v) (atomic_sub_return(1, v))
/* These are x86-specific, used by some header files */
#define atomic_clear_mask(mask, addr) \
asm volatile(LOCK_PREFIX "andl %0,%1" \
: : "r" (~(mask)), "m" (*(addr)) : "memory")
#define atomic_set_mask(mask, addr) \
asm volatile(LOCK_PREFIX "orl %0,%1" \
: : "r" (mask), "m" (*(addr)) : "memory")
/* Atomic operations are already serializing on x86 */
#define smp_mb__before_atomic_dec() barrier()
#define smp_mb__after_atomic_dec() barrier()
#define smp_mb__before_atomic_inc() barrier()
#define smp_mb__after_atomic_inc() barrier()
/* An 64bit atomic type */
typedef struct {
u64 __aligned(8) counter;
} atomic64_t;
#define ATOMIC64_INIT(val) { (val) }
extern u64 atomic64_cmpxchg(atomic64_t *ptr, u64 old_val, u64 new_val);
/**
* atomic64_xchg - xchg atomic64 variable
* @ptr: pointer to type atomic64_t
* @new_val: value to assign
*
* Atomically xchgs the value of @ptr to @new_val and returns
* the old value.
*/
extern u64 atomic64_xchg(atomic64_t *ptr, u64 new_val);
/**
* atomic64_set - set atomic64 variable
* @ptr: pointer to type atomic64_t
* @new_val: value to assign
*
* Atomically sets the value of @ptr to @new_val.
*/
extern void atomic64_set(atomic64_t *ptr, u64 new_val);
/**
* atomic64_read - read atomic64 variable
* @ptr: pointer to type atomic64_t
*
* Atomically reads the value of @ptr and returns it.
*/
static inline u64 atomic64_read(atomic64_t *ptr)
{
u64 res;
/*
* Note, we inline this atomic64_t primitive because
* it only clobbers EAX/EDX and leaves the others
* untouched. We also (somewhat subtly) rely on the
* fact that cmpxchg8b returns the current 64-bit value
* of the memory location we are touching:
*/
asm volatile(
"mov %%ebx, %%eax\n\t"
"mov %%ecx, %%edx\n\t"
LOCK_PREFIX "cmpxchg8b %1\n"
: "=&A" (res)
: "m" (*ptr)
);
return res;
}
extern u64 atomic64_read(atomic64_t *ptr);
/**
* atomic64_add_return - add and return
* @delta: integer value to add
* @ptr: pointer to type atomic64_t
*
* Atomically adds @delta to @ptr and returns @delta + *@ptr
*/
extern u64 atomic64_add_return(u64 delta, atomic64_t *ptr);
/*
* Other variants with different arithmetic operators:
*/
extern u64 atomic64_sub_return(u64 delta, atomic64_t *ptr);
extern u64 atomic64_inc_return(atomic64_t *ptr);
extern u64 atomic64_dec_return(atomic64_t *ptr);
/**
* atomic64_add - add integer to atomic64 variable
* @delta: integer value to add
* @ptr: pointer to type atomic64_t
*
* Atomically adds @delta to @ptr.
*/
extern void atomic64_add(u64 delta, atomic64_t *ptr);
/**
* atomic64_sub - subtract the atomic64 variable
* @delta: integer value to subtract
* @ptr: pointer to type atomic64_t
*
* Atomically subtracts @delta from @ptr.
*/
extern void atomic64_sub(u64 delta, atomic64_t *ptr);
/**
* atomic64_sub_and_test - subtract value from variable and test result
* @delta: integer value to subtract
* @ptr: pointer to type atomic64_t
*
* Atomically subtracts @delta from @ptr and returns
* true if the result is zero, or false for all
* other cases.
*/
extern int atomic64_sub_and_test(u64 delta, atomic64_t *ptr);
/**
* atomic64_inc - increment atomic64 variable
* @ptr: pointer to type atomic64_t
*
* Atomically increments @ptr by 1.
*/
extern void atomic64_inc(atomic64_t *ptr);
/**
* atomic64_dec - decrement atomic64 variable
* @ptr: pointer to type atomic64_t
*
* Atomically decrements @ptr by 1.
*/
extern void atomic64_dec(atomic64_t *ptr);
/**
* atomic64_dec_and_test - decrement and test
* @ptr: pointer to type atomic64_t
*
* Atomically decrements @ptr by 1 and
* returns true if the result is 0, or false for all other
* cases.
*/
extern int atomic64_dec_and_test(atomic64_t *ptr);
/**
* atomic64_inc_and_test - increment and test
* @ptr: pointer to type atomic64_t
*
* Atomically increments @ptr by 1
* and returns true if the result is zero, or false for all
* other cases.
*/
extern int atomic64_inc_and_test(atomic64_t *ptr);
/**
* atomic64_add_negative - add and test if negative
* @delta: integer value to add
* @ptr: pointer to type atomic64_t
*
* Atomically adds @delta to @ptr and returns true
* if the result is negative, or false when
* result is greater than or equal to zero.
*/
extern int atomic64_add_negative(u64 delta, atomic64_t *ptr);
#include <asm-generic/atomic-long.h>
#endif /* _ASM_X86_ATOMIC_32_H */

218
drivers/include/linux/asm/cmpxchg_32.h
View File

@ -26,23 +26,32 @@ struct __xchg_dummy {
__typeof(*(ptr)) __x = (x); \ __typeof(*(ptr)) __x = (x); \
switch (size) { \ switch (size) { \
case 1: \ case 1: \
asm volatile("xchgb %b0,%1" \ { \
: "=q" (__x) \ volatile u8 *__ptr = (volatile u8 *)(ptr); \
: "m" (*__xg(ptr)), "0" (__x) \ asm volatile("xchgb %0,%1" \
: "=q" (__x), "+m" (*__ptr) \
: "0" (__x) \
: "memory"); \ : "memory"); \
break; \ break; \
} \
case 2: \ case 2: \
asm volatile("xchgw %w0,%1" \ { \
: "=r" (__x) \ volatile u16 *__ptr = (volatile u16 *)(ptr); \
: "m" (*__xg(ptr)), "0" (__x) \ asm volatile("xchgw %0,%1" \
: "=r" (__x), "+m" (*__ptr) \
: "0" (__x) \
: "memory"); \ : "memory"); \
break; \ break; \
} \
case 4: \ case 4: \
{ \
volatile u32 *__ptr = (volatile u32 *)(ptr); \
asm volatile("xchgl %0,%1" \ asm volatile("xchgl %0,%1" \
: "=r" (__x) \ : "=r" (__x), "+m" (*__ptr) \
: "m" (*__xg(ptr)), "0" (__x) \ : "0" (__x) \
: "memory"); \ : "memory"); \
break; \ break; \
} \
default: \ default: \
__xchg_wrong_size(); \ __xchg_wrong_size(); \
} \ } \
@ -53,60 +62,33 @@ struct __xchg_dummy {
__xchg((v), (ptr), sizeof(*ptr)) __xchg((v), (ptr), sizeof(*ptr))
/* /*
* The semantics of XCHGCMP8B are a bit strange, this is why * CMPXCHG8B only writes to the target if we had the previous
* there is a loop and the loading of %%eax and %%edx has to * value in registers, otherwise it acts as a read and gives us the
* be inside. This inlines well in most cases, the cached * "new previous" value. That is why there is a loop. Preloading
* cost is around ~38 cycles. (in the future we might want * EDX:EAX is a performance optimization: in the common case it means
* to do an SIMD/3DNOW!/MMX/FPU 64-bit store here, but that * we need only one locked operation.
* might have an implicit FPU-save as a cost, so it's not
* clear which path to go.)
* *
* cmpxchg8b must be used with the lock prefix here to allow * A SIMD/3DNOW!/MMX/FPU 64-bit store here would require at the very
* the instruction to be executed atomically, see page 3-102 * least an FPU save and/or %cr0.ts manipulation.
* of the instruction set reference 24319102.pdf. We need *
* the reader side to see the coherent 64bit value. * cmpxchg8b must be used with the lock prefix here to allow the
* instruction to be executed atomically. We need to have the reader
* side to see the coherent 64bit value.
*/ */
static inline void __set_64bit(unsigned long long *ptr, static inline void set_64bit(volatile u64 *ptr, u64 value)
unsigned int low, unsigned int high)
{ {
u32 low = value;
u32 high = value >> 32;
u64 prev = *ptr;
asm volatile("\n1:\t" asm volatile("\n1:\t"
"movl (%0), %%eax\n\t" LOCK_PREFIX "cmpxchg8b %0\n\t"
"movl 4(%0), %%edx\n\t"
LOCK_PREFIX "cmpxchg8b (%0)\n\t"
"jnz 1b" "jnz 1b"
: /* no outputs */ : "=m" (*ptr), "+A" (prev)
: "D"(ptr), : "b" (low), "c" (high)
"b"(low), : "memory");
"c"(high)
: "ax", "dx", "memory");
} }
static inline void __set_64bit_constant(unsigned long long *ptr,
unsigned long long value)
{
__set_64bit(ptr, (unsigned int)value, (unsigned int)(value >> 32));
}
#define ll_low(x) *(((unsigned int *)&(x)) + 0)
#define ll_high(x) *(((unsigned int *)&(x)) + 1)
static inline void __set_64bit_var(unsigned long long *ptr,
unsigned long long value)
{
__set_64bit(ptr, ll_low(value), ll_high(value));
}
#define set_64bit(ptr, value) \
(__builtin_constant_p((value)) \
? __set_64bit_constant((ptr), (value)) \
: __set_64bit_var((ptr), (value)))
#define _set_64bit(ptr, value) \
(__builtin_constant_p(value) \
? __set_64bit(ptr, (unsigned int)(value), \
(unsigned int)((value) >> 32)) \
: __set_64bit(ptr, ll_low((value)), ll_high((value))))
extern void __cmpxchg_wrong_size(void); extern void __cmpxchg_wrong_size(void);
/* /*
@ -121,23 +103,32 @@ extern void __cmpxchg_wrong_size(void);
__typeof__(*(ptr)) __new = (new); \ __typeof__(*(ptr)) __new = (new); \
switch (size) { \ switch (size) { \
case 1: \ case 1: \
asm volatile(lock "cmpxchgb %b1,%2" \ { \
: "=a"(__ret) \ volatile u8 *__ptr = (volatile u8 *)(ptr); \
: "q"(__new), "m"(*__xg(ptr)), "0"(__old) \ asm volatile(lock "cmpxchgb %2,%1" \
: "=a" (__ret), "+m" (*__ptr) \
: "q" (__new), "0" (__old) \
: "memory"); \ : "memory"); \
break; \ break; \
} \
case 2: \ case 2: \
asm volatile(lock "cmpxchgw %w1,%2" \ { \
: "=a"(__ret) \ volatile u16 *__ptr = (volatile u16 *)(ptr); \
: "r"(__new), "m"(*__xg(ptr)), "0"(__old) \ asm volatile(lock "cmpxchgw %2,%1" \
: "=a" (__ret), "+m" (*__ptr) \
: "r" (__new), "0" (__old) \
: "memory"); \ : "memory"); \
break; \ break; \
} \
case 4: \ case 4: \
asm volatile(lock "cmpxchgl %1,%2" \ { \
: "=a"(__ret) \ volatile u32 *__ptr = (volatile u32 *)(ptr); \
: "r"(__new), "m"(*__xg(ptr)), "0"(__old) \ asm volatile(lock "cmpxchgl %2,%1" \
: "=a" (__ret), "+m" (*__ptr) \
: "r" (__new), "0" (__old) \
: "memory"); \ : "memory"); \
break; \ break; \
} \
default: \ default: \
__cmpxchg_wrong_size(); \ __cmpxchg_wrong_size(); \
} \ } \
@ -175,32 +166,28 @@ extern void __cmpxchg_wrong_size(void);
(unsigned long long)(n))) (unsigned long long)(n)))
#endif #endif
static inline unsigned long long __cmpxchg64(volatile void *ptr, static inline u64 __cmpxchg64(volatile u64 *ptr, u64 old, u64 new)
unsigned long long old,
unsigned long long new)
{ {
unsigned long long prev; u64 prev;
asm volatile(LOCK_PREFIX "cmpxchg8b %3" asm volatile(LOCK_PREFIX "cmpxchg8b %1"
: "=A"(prev) : "=A" (prev),
: "b"((unsigned long)new), "+m" (*ptr)
"c"((unsigned long)(new >> 32)), : "b" ((u32)new),
"m"(*__xg(ptr)), "c" ((u32)(new >> 32)),
"0"(old) "0" (old)
: "memory"); : "memory");
return prev; return prev;
} }
static inline unsigned long long __cmpxchg64_local(volatile void *ptr, static inline u64 __cmpxchg64_local(volatile u64 *ptr, u64 old, u64 new)
unsigned long long old,
unsigned long long new)
{ {
unsigned long long prev; u64 prev;
asm volatile("cmpxchg8b %3" asm volatile("cmpxchg8b %1"
: "=A"(prev) : "=A" (prev),
: "b"((unsigned long)new), "+m" (*ptr)
"c"((unsigned long)(new >> 32)), : "b" ((u32)new),
"m"(*__xg(ptr)), "c" ((u32)(new >> 32)),
"0"(old) "0" (old)
: "memory"); : "memory");
return prev; return prev;
} }
@ -212,20 +199,38 @@ static inline unsigned long long __cmpxchg64_local(volatile void *ptr,
* a function for each of the sizes we support. * a function for each of the sizes we support.
*/ */
extern unsigned long cmpxchg_386_u8(volatile void *, u8, u8);
extern unsigned long cmpxchg_386_u16(volatile void *, u16, u16);
extern unsigned long cmpxchg_386_u32(volatile void *, u32, u32);
static inline unsigned long cmpxchg_386(volatile void *ptr, unsigned long old,
unsigned long new, int size)
{
switch (size) {
case 1:
return cmpxchg_386_u8(ptr, old, new);
case 2:
return cmpxchg_386_u16(ptr, old, new);
case 4:
return cmpxchg_386_u32(ptr, old, new);
}
return old;
}
#define cmpxchg(ptr, o, n) \ #define cmpxchg(ptr, o, n) \
({ \ ({ \
__typeof__(*(ptr)) __ret; \ __typeof__(*(ptr)) __ret; \
__ret = (__typeof__(*(ptr)))__cmpxchg((ptr), \ __ret = (__typeof__(*(ptr)))__cmpxchg((ptr), \
(unsigned long)(o), (unsigned long)(n), \ (unsigned long)(o), (unsigned long)(n), \
sizeof(*(ptr))); \ sizeof(*(ptr))); \
__ret; \ __ret; \
}) })
#define cmpxchg_local(ptr, o, n) \ #define cmpxchg_local(ptr, o, n) \
({ \ ({ \
__typeof__(*(ptr)) __ret; \ __typeof__(*(ptr)) __ret; \
__ret = (__typeof__(*(ptr)))__cmpxchg_local((ptr), \ __ret = (__typeof__(*(ptr)))__cmpxchg_local((ptr), \
(unsigned long)(o), (unsigned long)(n), \ (unsigned long)(o), (unsigned long)(n), \
sizeof(*(ptr))); \ sizeof(*(ptr))); \
__ret; \ __ret; \
}) })
#endif #endif
@ -236,14 +241,13 @@ static inline unsigned long long __cmpxchg64_local(volatile void *ptr,
* to simulate the cmpxchg8b on the 80386 and 80486 CPU. * to simulate the cmpxchg8b on the 80386 and 80486 CPU.
*/ */
extern unsigned long long cmpxchg_486_u64(volatile void *, u64, u64);
#define cmpxchg64(ptr, o, n) \ #define cmpxchg64(ptr, o, n) \
({ \ ({ \
__typeof__(*(ptr)) __ret; \ __typeof__(*(ptr)) __ret; \
__typeof__(*(ptr)) __old = (o); \ __typeof__(*(ptr)) __old = (o); \
__typeof__(*(ptr)) __new = (n); \ __typeof__(*(ptr)) __new = (n); \
alternative_io("call cmpxchg8b_emu", \ alternative_io(LOCK_PREFIX_HERE \
"call cmpxchg8b_emu", \
"lock; cmpxchg8b (%%esi)" , \ "lock; cmpxchg8b (%%esi)" , \
X86_FEATURE_CX8, \ X86_FEATURE_CX8, \
"=A" (__ret), \ "=A" (__ret), \
@ -254,20 +258,20 @@ extern unsigned long long cmpxchg_486_u64(volatile void *, u64, u64);
__ret; }) __ret; })
#define cmpxchg64_local(ptr, o, n) \
#define cmpxchg64_local(ptr, o, n) \ ({ \
({ \ __typeof__(*(ptr)) __ret; \
__typeof__(*(ptr)) __ret; \ __typeof__(*(ptr)) __old = (o); \
if (likely(boot_cpu_data.x86 > 4)) \ __typeof__(*(ptr)) __new = (n); \
__ret = (__typeof__(*(ptr)))__cmpxchg64_local((ptr), \ alternative_io("call cmpxchg8b_emu", \
(unsigned long long)(o), \ "cmpxchg8b (%%esi)" , \
(unsigned long long)(n)); \ X86_FEATURE_CX8, \
else \ "=A" (__ret), \
__ret = (__typeof__(*(ptr)))cmpxchg_486_u64((ptr), \ "S" ((ptr)), "0" (__old), \
(unsigned long long)(o), \ "b" ((unsigned int)__new), \
(unsigned long long)(n)); \ "c" ((unsigned int)(__new>>32)) \
__ret; \ : "memory"); \
}) __ret; })
#endif #endif

10
drivers/include/linux/i2c.h
View File

@ -33,6 +33,14 @@
#define I2C_NAME_SIZE 20 #define I2C_NAME_SIZE 20
#define I2C_MODULE_PREFIX "i2c:"
struct i2c_device_id {
char name[I2C_NAME_SIZE];
u32 driver_data /* Data private to the driver */
__attribute__((aligned(sizeof(u32))));
};
struct i2c_msg; struct i2c_msg;
struct i2c_algorithm; struct i2c_algorithm;
@ -203,7 +211,7 @@ struct i2c_adapter {
}; };
#define to_i2c_adapter(d) container_of(d, struct i2c_adapter, dev) #define to_i2c_adapter(d) container_of(d, struct i2c_adapter, dev)
static inline void *i2c_get_adapdata(const struct i2c_adapter *dev) static inline void *i2c_get_adapdata(struct i2c_adapter *dev)
{ {
return dev_get_drvdata(&dev->dev); return dev_get_drvdata(&dev->dev);
} }

127
drivers/include/linux/ioport.h Normal file
View File

@ -0,0 +1,127 @@
/*
* ioport.h Definitions of routines for detecting, reserving and
* allocating system resources.
*
* Authors: Linus Torvalds
*/
#ifndef _LINUX_IOPORT_H
#define _LINUX_IOPORT_H
#ifndef __ASSEMBLY__
#include <linux/compiler.h>
#include <linux/types.h>
/*
* Resources are tree-like, allowing
* nesting etc..
*/
struct resource {
resource_size_t start;
resource_size_t end;
const char *name;
unsigned long flags;
struct resource *parent, *sibling, *child;
};
struct resource_list {
struct resource_list *next;
struct resource *res;
struct pci_dev *dev;
};
/*
* IO resources have these defined flags.
*/
#define IORESOURCE_BITS 0x000000ff /* Bus-specific bits */
#define IORESOURCE_TYPE_BITS 0x00001f00 /* Resource type */
#define IORESOURCE_IO 0x00000100
#define IORESOURCE_MEM 0x00000200
#define IORESOURCE_IRQ 0x00000400
#define IORESOURCE_DMA 0x00000800
#define IORESOURCE_BUS 0x00001000
#define IORESOURCE_PREFETCH 0x00002000 /* No side effects */
#define IORESOURCE_READONLY 0x00004000
#define IORESOURCE_CACHEABLE 0x00008000
#define IORESOURCE_RANGELENGTH 0x00010000
#define IORESOURCE_SHADOWABLE 0x00020000
#define IORESOURCE_SIZEALIGN 0x00040000 /* size indicates alignment */
#define IORESOURCE_STARTALIGN 0x00080000 /* start field is alignment */
#define IORESOURCE_MEM_64 0x00100000
#define IORESOURCE_WINDOW 0x00200000 /* forwarded by bridge */
#define IORESOURCE_MUXED 0x00400000 /* Resource is software muxed */
#define IORESOURCE_EXCLUSIVE 0x08000000 /* Userland may not map this resource */
#define IORESOURCE_DISABLED 0x10000000
#define IORESOURCE_UNSET 0x20000000
#define IORESOURCE_AUTO 0x40000000
#define IORESOURCE_BUSY 0x80000000 /* Driver has marked this resource busy */
/* PnP IRQ specific bits (IORESOURCE_BITS) */
#define IORESOURCE_IRQ_HIGHEDGE (1<<0)
#define IORESOURCE_IRQ_LOWEDGE (1<<1)
#define IORESOURCE_IRQ_HIGHLEVEL (1<<2)
#define IORESOURCE_IRQ_LOWLEVEL (1<<3)
#define IORESOURCE_IRQ_SHAREABLE (1<<4)
#define IORESOURCE_IRQ_OPTIONAL (1<<5)
/* PnP DMA specific bits (IORESOURCE_BITS) */
#define IORESOURCE_DMA_TYPE_MASK (3<<0)
#define IORESOURCE_DMA_8BIT (0<<0)
#define IORESOURCE_DMA_8AND16BIT (1<<0)
#define IORESOURCE_DMA_16BIT (2<<0)
#define IORESOURCE_DMA_MASTER (1<<2)
#define IORESOURCE_DMA_BYTE (1<<3)
#define IORESOURCE_DMA_WORD (1<<4)
#define IORESOURCE_DMA_SPEED_MASK (3<<6)
#define IORESOURCE_DMA_COMPATIBLE (0<<6)
#define IORESOURCE_DMA_TYPEA (1<<6)
#define IORESOURCE_DMA_TYPEB (2<<6)
#define IORESOURCE_DMA_TYPEF (3<<6)
/* PnP memory I/O specific bits (IORESOURCE_BITS) */
#define IORESOURCE_MEM_WRITEABLE (1<<0) /* dup: IORESOURCE_READONLY */
#define IORESOURCE_MEM_CACHEABLE (1<<1) /* dup: IORESOURCE_CACHEABLE */
#define IORESOURCE_MEM_RANGELENGTH (1<<2) /* dup: IORESOURCE_RANGELENGTH */
#define IORESOURCE_MEM_TYPE_MASK (3<<3)
#define IORESOURCE_MEM_8BIT (0<<3)
#define IORESOURCE_MEM_16BIT (1<<3)
#define IORESOURCE_MEM_8AND16BIT (2<<3)
#define IORESOURCE_MEM_32BIT (3<<3)
#define IORESOURCE_MEM_SHADOWABLE (1<<5) /* dup: IORESOURCE_SHADOWABLE */
#define IORESOURCE_MEM_EXPANSIONROM (1<<6)
/* PnP I/O specific bits (IORESOURCE_BITS) */
#define IORESOURCE_IO_16BIT_ADDR (1<<0)
#define IORESOURCE_IO_FIXED (1<<1)
/* PCI ROM control bits (IORESOURCE_BITS) */
#define IORESOURCE_ROM_ENABLE (1<<0) /* ROM is enabled, same as PCI_ROM_ADDRESS_ENABLE */
#define IORESOURCE_ROM_SHADOW (1<<1) /* ROM is copy at C000:0 */
#define IORESOURCE_ROM_COPY (1<<2) /* ROM is alloc'd copy, resource field overlaid */
#define IORESOURCE_ROM_BIOS_COPY (1<<3) /* ROM is BIOS copy, resource field overlaid */
/* PCI control bits. Shares IORESOURCE_BITS with above PCI ROM. */
#define IORESOURCE_PCI_FIXED (1<<4) /* Do not move resource */
/* PC/ISA/whatever - the normal PC address spaces: IO and memory */
extern struct resource ioport_resource;
extern struct resource iomem_resource;
static inline resource_size_t resource_size(const struct resource *res)
{
return res->end - res->start + 1;
}
static inline unsigned long resource_type(const struct resource *res)
{
return res->flags & IORESOURCE_TYPE_BITS;
}
#endif /* __ASSEMBLY__ */
#endif /* _LINUX_IOPORT_H */

145
drivers/include/linux/pci.h
View File

@ -1,11 +1,12 @@
#include <types.h>
#include <list.h>
#include <pci_regs.h>
#ifndef __PCI_H__ #ifndef __PCI_H__
#define __PCI_H__ #define __PCI_H__
#include <types.h>
#include <list.h>
#include <ioport.h>
#include <pci_regs.h>
#include <linux/errno.h>
/* pci_slot represents a physical slot */ /* pci_slot represents a physical slot */
struct pci_slot { struct pci_slot {
@ -238,16 +239,6 @@ pciTag(int busnum, int devnum, int funcnum)
return(PCI_MAKE_TAG(busnum,devnum,funcnum)); return(PCI_MAKE_TAG(busnum,devnum,funcnum));
} }
struct resource
{
resource_size_t start;
resource_size_t end;
const char *name;
unsigned long flags;
struct resource *parent, *sibling, *child;
};
/* This defines the direction arg to the DMA mapping routines. */ /* This defines the direction arg to the DMA mapping routines. */
#define PCI_DMA_BIDIRECTIONAL 0 #define PCI_DMA_BIDIRECTIONAL 0
#define PCI_DMA_TODEVICE 1 #define PCI_DMA_TODEVICE 1
@ -286,75 +277,6 @@ enum {
}; };
/*
* IO resources have these defined flags.
*/
#define IORESOURCE_BITS 0x000000ff /* Bus-specific bits */
#define IORESOURCE_IO 0x00000100 /* Resource type */
#define IORESOURCE_MEM 0x00000200
#define IORESOURCE_IRQ 0x00000400
#define IORESOURCE_DMA 0x00000800
#define IORESOURCE_PREFETCH 0x00001000 /* No side effects */
#define IORESOURCE_READONLY 0x00002000
#define IORESOURCE_CACHEABLE 0x00004000
#define IORESOURCE_RANGELENGTH 0x00008000
#define IORESOURCE_SHADOWABLE 0x00010000
#define IORESOURCE_BUS_HAS_VGA 0x00080000
#define IORESOURCE_DISABLED 0x10000000
#define IORESOURCE_UNSET 0x20000000
#define IORESOURCE_AUTO 0x40000000
#define IORESOURCE_BUSY 0x80000000 /* Driver has marked this resource busy */
/* ISA PnP IRQ specific bits (IORESOURCE_BITS) */
#define IORESOURCE_IRQ_HIGHEDGE (1<<0)
#define IORESOURCE_IRQ_LOWEDGE (1<<1)
#define IORESOURCE_IRQ_HIGHLEVEL (1<<2)
#define IORESOURCE_IRQ_LOWLEVEL (1<<3)
#define IORESOURCE_IRQ_SHAREABLE (1<<4)
/* ISA PnP DMA specific bits (IORESOURCE_BITS) */
#define IORESOURCE_DMA_TYPE_MASK (3<<0)
#define IORESOURCE_DMA_8BIT (0<<0)
#define IORESOURCE_DMA_8AND16BIT (1<<0)
#define IORESOURCE_DMA_16BIT (2<<0)
#define IORESOURCE_DMA_MASTER (1<<2)
#define IORESOURCE_DMA_BYTE (1<<3)
#define IORESOURCE_DMA_WORD (1<<4)
#define IORESOURCE_DMA_SPEED_MASK (3<<6)
#define IORESOURCE_DMA_COMPATIBLE (0<<6)
#define IORESOURCE_DMA_TYPEA (1<<6)
#define IORESOURCE_DMA_TYPEB (2<<6)
#define IORESOURCE_DMA_TYPEF (3<<6)
/* ISA PnP memory I/O specific bits (IORESOURCE_BITS) */
#define IORESOURCE_MEM_WRITEABLE (1<<0) /* dup: IORESOURCE_READONLY */
#define IORESOURCE_MEM_CACHEABLE (1<<1) /* dup: IORESOURCE_CACHEABLE */
#define IORESOURCE_MEM_RANGELENGTH (1<<2) /* dup: IORESOURCE_RANGELENGTH */
#define IORESOURCE_MEM_TYPE_MASK (3<<3)
#define IORESOURCE_MEM_8BIT (0<<3)
#define IORESOURCE_MEM_16BIT (1<<3)
#define IORESOURCE_MEM_8AND16BIT (2<<3)
#define IORESOURCE_MEM_32BIT (3<<3)
#define IORESOURCE_MEM_SHADOWABLE (1<<5) /* dup: IORESOURCE_SHADOWABLE */
#define IORESOURCE_MEM_EXPANSIONROM (1<<6)
/* PCI ROM control bits (IORESOURCE_BITS) */
#define IORESOURCE_ROM_ENABLE (1<<0) /* ROM is enabled, same as PCI_ROM_ADDRESS_ENABLE */
#define IORESOURCE_ROM_SHADOW (1<<1) /* ROM is copy at C000:0 */
#define IORESOURCE_ROM_COPY (1<<2) /* ROM is alloc'd copy, resource field overlaid */
#define IORESOURCE_ROM_BIOS_COPY (1<<3) /* ROM is BIOS copy, resource field overlaid */
/* PCI control bits. Shares IORESOURCE_BITS with above PCI ROM. */
#define IORESOURCE_PCI_FIXED (1<<4) /* Do not move resource */
/* /*
* For PCI devices, the region numbers are assigned this way: * For PCI devices, the region numbers are assigned this way:
* *
@ -388,6 +310,14 @@ typedef int __bitwise pci_power_t;
#define PCI_UNKNOWN ((pci_power_t __force) 5) #define PCI_UNKNOWN ((pci_power_t __force) 5)
#define PCI_POWER_ERROR ((pci_power_t __force) -1) #define PCI_POWER_ERROR ((pci_power_t __force) -1)
enum pci_bar_type {
pci_bar_unknown, /* Standard PCI BAR probe */
pci_bar_io, /* An io port BAR */
pci_bar_mem32, /* A 32-bit memory BAR */
pci_bar_mem64, /* A 64-bit memory BAR */
};
/* /*
* The pci_dev structure is used to describe PCI devices. * The pci_dev structure is used to describe PCI devices.
*/ */
@ -479,7 +409,7 @@ struct pci_dev {
// u32 saved_config_space[16]; /* config space saved at suspend time */ // u32 saved_config_space[16]; /* config space saved at suspend time */
// struct hlist_head saved_cap_space; // struct hlist_head saved_cap_space;
// struct bin_attribute *rom_attr; /* attribute descriptor for sysfs ROM entry */ // struct bin_attribute *rom_attr; /* attribute descriptor for sysfs ROM entry */
// int rom_attr_enabled; /* has display of the rom attribute been enabled? */ int rom_attr_enabled; /* has display of the rom attribute been enabled? */
// struct bin_attribute *res_attr[DEVICE_COUNT_RESOURCE]; /* sysfs file for resources */ // struct bin_attribute *res_attr[DEVICE_COUNT_RESOURCE]; /* sysfs file for resources */
// struct bin_attribute *res_attr_wc[DEVICE_COUNT_RESOURCE]; /* sysfs file for WC mapping of resources */ // struct bin_attribute *res_attr_wc[DEVICE_COUNT_RESOURCE]; /* sysfs file for WC mapping of resources */
}; };
@ -622,6 +552,7 @@ struct pci_bus_region {
extern struct list_head pci_root_buses; /* list of all known PCI buses */
int enum_pci_devices(void); int enum_pci_devices(void);
@ -642,6 +573,9 @@ int pci_bus_find_ext_capability(struct pci_bus *bus, unsigned int devfn,
int cap); int cap);
int pci_find_next_ht_capability(struct pci_dev *dev, int pos, int ht_cap); int pci_find_next_ht_capability(struct pci_dev *dev, int pos, int ht_cap);
struct pci_bus * pci_find_next_bus(const struct pci_bus *from); struct pci_bus * pci_find_next_bus(const struct pci_bus *from);
unsigned int pci_scan_child_bus(struct pci_bus *bus);
void pcibios_fixup_bus(struct pci_bus *b);
static inline bool pci_is_root_bus(struct pci_bus *pbus) static inline bool pci_is_root_bus(struct pci_bus *pbus)
{ {
@ -675,6 +609,49 @@ static inline bool pci_is_pcie(struct pci_dev *dev)
return !!pci_pcie_cap(dev); return !!pci_pcie_cap(dev);
} }
int pci_read_config_dyte(struct pci_dev *dev, int where, u16 *val);
int pci_read_config_word(struct pci_dev *dev, int where, u16 *val);
int pci_read_config_dword(struct pci_dev *dev, int where, u32 *val);
static inline int pci_iov_init(struct pci_dev *dev)
{
return -ENODEV;
}
static inline void pci_iov_release(struct pci_dev *dev)
{
}
static inline int pci_iov_resource_bar(struct pci_dev *dev, int resno,
enum pci_bar_type *type)
{
return 0;
}
static inline void pci_restore_iov_state(struct pci_dev *dev)
{
}
static inline int pci_iov_bus_range(struct pci_bus *bus)
{
return 0;
}
static inline int pci_enable_ats(struct pci_dev *dev, int ps)
{
return -ENODEV;
}
static inline void pci_disable_ats(struct pci_dev *dev)
{
}
static inline int pci_ats_queue_depth(struct pci_dev *dev)
{
return -ENODEV;
}
static inline int pci_ats_enabled(struct pci_dev *dev)
{
return 0;
}
#define pci_name(x) "radeon" #define pci_name(x) "radeon"
#endif //__PCI__H__ #endif //__PCI__H__

11
drivers/include/syscall.h
View File

@ -405,17 +405,6 @@ static inline void iounmap(void *addr)
FreeKernelSpace(addr); FreeKernelSpace(addr);
} }
static inline void *
pci_alloc_consistent(struct pci_dev *hwdev, size_t size,
addr_t *dma_handle)
{
size = (size + 0x7FFF) & ~0x7FFF;
*dma_handle = AllocPages(size >> 12);
return (void*)MapIoMem(*dma_handle, size, PG_SW+PG_NOCACHE);
}
static inline void __SysMsgBoardStr(char *text) static inline void __SysMsgBoardStr(char *text)
{ {
__asm__ __volatile__( __asm__ __volatile__(

14
drivers/video/drm/radeon/radeon_gart.c
View File

@ -30,6 +30,18 @@
#include "radeon.h" #include "radeon.h"
#include "radeon_reg.h" #include "radeon_reg.h"
static inline void *
pci_alloc_consistent(struct pci_dev *hwdev, size_t size,
addr_t *dma_handle)
{
size = (size + 0x7FFF) & ~0x7FFF;
*dma_handle = AllocPages(size >> 12);
return (void*)MapIoMem(*dma_handle, size, PG_SW+PG_NOCACHE);
}
/* /*
* Common GART table functions. * Common GART table functions.
*/ */
@ -271,3 +283,5 @@ void radeon_gart_fini(struct radeon_device *rdev)
rdev->gart.pages = NULL; rdev->gart.pages = NULL;
rdev->gart.pages_addr = NULL; rdev->gart.pages_addr = NULL;
} }