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-rw-r--r--drivers/message/i2o/iop.c85
-rw-r--r--drivers/pci/bus.c8
-rw-r--r--drivers/pci/host-bridge.c8
-rw-r--r--drivers/pci/pci.c46
-rw-r--r--drivers/pci/probe.c17
-rw-r--r--drivers/pci/quirks.c5
-rw-r--r--drivers/pci/rom.c2
-rw-r--r--drivers/pci/setup-res.c37
8 files changed, 120 insertions, 88 deletions
diff --git a/drivers/message/i2o/iop.c b/drivers/message/i2o/iop.c
index a8c08f332da0..92752fb5b2d3 100644
--- a/drivers/message/i2o/iop.c
+++ b/drivers/message/i2o/iop.c
@@ -652,6 +652,44 @@ static int i2o_iop_activate(struct i2o_controller *c)
return i2o_hrt_get(c);
};
+static void i2o_res_alloc(struct i2o_controller *c, unsigned long flags)
+{
+ i2o_status_block *sb = c->status_block.virt;
+ struct resource *res = &c->mem_resource;
+ resource_size_t size, align;
+ int err;
+
+ res->name = c->pdev->bus->name;
+ res->flags = flags;
+ res->start = 0;
+ res->end = 0;
+ osm_info("%s: requires private memory resources.\n", c->name);
+
+ if (flags & IORESOURCE_MEM) {
+ size = sb->desired_mem_size;
+ align = 1 << 20; /* unspecified, use 1Mb and play safe */
+ } else {
+ size = sb->desired_io_size;
+ align = 1 << 12; /* unspecified, use 4Kb and play safe */
+ }
+
+ err = pci_bus_alloc_resource(c->pdev->bus, res, size, align, 0, 0,
+ NULL, NULL);
+ if (err < 0)
+ return;
+
+ if (flags & IORESOURCE_MEM) {
+ c->mem_alloc = 1;
+ sb->current_mem_size = resource_size(res);
+ sb->current_mem_base = res->start;
+ } else if (flags & IORESOURCE_IO) {
+ c->io_alloc = 1;
+ sb->current_io_size = resource_size(res);
+ sb->current_io_base = res->start;
+ }
+ osm_info("%s: allocated PCI space %pR\n", c->name, res);
+}
+
/**
* i2o_iop_systab_set - Set the I2O System Table of the specified IOP
* @c: I2O controller to which the system table should be send
@@ -665,52 +703,13 @@ static int i2o_iop_systab_set(struct i2o_controller *c)
struct i2o_message *msg;
i2o_status_block *sb = c->status_block.virt;
struct device *dev = &c->pdev->dev;
- struct resource *root;
int rc;
- if (sb->current_mem_size < sb->desired_mem_size) {
- struct resource *res = &c->mem_resource;
- res->name = c->pdev->bus->name;
- res->flags = IORESOURCE_MEM;
- res->start = 0;
- res->end = 0;
- osm_info("%s: requires private memory resources.\n", c->name);
- root = pci_find_parent_resource(c->pdev, res);
- if (root == NULL)
- osm_warn("%s: Can't find parent resource!\n", c->name);
- if (root && allocate_resource(root, res, sb->desired_mem_size, sb->desired_mem_size, sb->desired_mem_size, 1 << 20, /* Unspecified, so use 1Mb and play safe */
- NULL, NULL) >= 0) {
- c->mem_alloc = 1;
- sb->current_mem_size = resource_size(res);
- sb->current_mem_base = res->start;
- osm_info("%s: allocated %llu bytes of PCI memory at "
- "0x%016llX.\n", c->name,
- (unsigned long long)resource_size(res),
- (unsigned long long)res->start);
- }
- }
+ if (sb->current_mem_size < sb->desired_mem_size)
+ i2o_res_alloc(c, IORESOURCE_MEM);
- if (sb->current_io_size < sb->desired_io_size) {
- struct resource *res = &c->io_resource;
- res->name = c->pdev->bus->name;
- res->flags = IORESOURCE_IO;
- res->start = 0;
- res->end = 0;
- osm_info("%s: requires private memory resources.\n", c->name);
- root = pci_find_parent_resource(c->pdev, res);
- if (root == NULL)
- osm_warn("%s: Can't find parent resource!\n", c->name);
- if (root && allocate_resource(root, res, sb->desired_io_size, sb->desired_io_size, sb->desired_io_size, 1 << 20, /* Unspecified, so use 1Mb and play safe */
- NULL, NULL) >= 0) {
- c->io_alloc = 1;
- sb->current_io_size = resource_size(res);
- sb->current_mem_base = res->start;
- osm_info("%s: allocated %llu bytes of PCI I/O at "
- "0x%016llX.\n", c->name,
- (unsigned long long)resource_size(res),
- (unsigned long long)res->start);
- }
- }
+ if (sb->current_io_size < sb->desired_io_size)
+ i2o_res_alloc(c, IORESOURCE_IO);
msg = i2o_msg_get_wait(c, I2O_TIMEOUT_MESSAGE_GET);
if (IS_ERR(msg))
diff --git a/drivers/pci/bus.c b/drivers/pci/bus.c
index 00660cc502c5..fb8aed307c28 100644
--- a/drivers/pci/bus.c
+++ b/drivers/pci/bus.c
@@ -132,7 +132,7 @@ static void pci_clip_resource_to_region(struct pci_bus *bus,
static int pci_bus_alloc_from_region(struct pci_bus *bus, struct resource *res,
resource_size_t size, resource_size_t align,
- resource_size_t min, unsigned int type_mask,
+ resource_size_t min, unsigned long type_mask,
resource_size_t (*alignf)(void *,
const struct resource *,
resource_size_t,
@@ -144,7 +144,7 @@ static int pci_bus_alloc_from_region(struct pci_bus *bus, struct resource *res,
struct resource *r, avail;
resource_size_t max;
- type_mask |= IORESOURCE_IO | IORESOURCE_MEM;
+ type_mask |= IORESOURCE_TYPE_BITS;
pci_bus_for_each_resource(bus, r, i) {
if (!r)
@@ -162,8 +162,6 @@ static int pci_bus_alloc_from_region(struct pci_bus *bus, struct resource *res,
avail = *r;
pci_clip_resource_to_region(bus, &avail, region);
- if (!resource_size(&avail))
- continue;
/*
* "min" is typically PCIBIOS_MIN_IO or PCIBIOS_MIN_MEM to
@@ -202,7 +200,7 @@ static int pci_bus_alloc_from_region(struct pci_bus *bus, struct resource *res,
*/
int pci_bus_alloc_resource(struct pci_bus *bus, struct resource *res,
resource_size_t size, resource_size_t align,
- resource_size_t min, unsigned int type_mask,
+ resource_size_t min, unsigned long type_mask,
resource_size_t (*alignf)(void *,
const struct resource *,
resource_size_t,
diff --git a/drivers/pci/host-bridge.c b/drivers/pci/host-bridge.c
index 06ace6248c61..47aaf22d814e 100644
--- a/drivers/pci/host-bridge.c
+++ b/drivers/pci/host-bridge.c
@@ -32,11 +32,6 @@ void pci_set_host_bridge_release(struct pci_host_bridge *bridge,
bridge->release_data = release_data;
}
-static bool resource_contains(struct resource *res1, struct resource *res2)
-{
- return res1->start <= res2->start && res1->end >= res2->end;
-}
-
void pcibios_resource_to_bus(struct pci_bus *bus, struct pci_bus_region *region,
struct resource *res)
{
@@ -45,9 +40,6 @@ void pcibios_resource_to_bus(struct pci_bus *bus, struct pci_bus_region *region,
resource_size_t offset = 0;
list_for_each_entry(window, &bridge->windows, list) {
- if (resource_type(res) != resource_type(window->res))
- continue;
-
if (resource_contains(window->res, res)) {
offset = window->offset;
break;
diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c
index 505fbb670d6a..7325d43bf030 100644
--- a/drivers/pci/pci.c
+++ b/drivers/pci/pci.c
@@ -401,33 +401,40 @@ EXPORT_SYMBOL_GPL(pci_find_ht_capability);
* @res: child resource record for which parent is sought
*
* For given resource region of given device, return the resource
- * region of parent bus the given region is contained in or where
- * it should be allocated from.
+ * region of parent bus the given region is contained in.
*/
struct resource *
pci_find_parent_resource(const struct pci_dev *dev, struct resource *res)
{
const struct pci_bus *bus = dev->bus;
+ struct resource *r;
int i;
- struct resource *best = NULL, *r;
pci_bus_for_each_resource(bus, r, i) {
if (!r)
continue;
- if (res->start && !(res->start >= r->start && res->end <= r->end))
- continue; /* Not contained */
- if ((res->flags ^ r->flags) & (IORESOURCE_IO | IORESOURCE_MEM))
- continue; /* Wrong type */
- if (!((res->flags ^ r->flags) & IORESOURCE_PREFETCH))
- return r; /* Exact match */
- /* We can't insert a non-prefetch resource inside a prefetchable parent .. */
- if (r->flags & IORESOURCE_PREFETCH)
- continue;
- /* .. but we can put a prefetchable resource inside a non-prefetchable one */
- if (!best)
- best = r;
+ if (res->start && resource_contains(r, res)) {
+
+ /*
+ * If the window is prefetchable but the BAR is
+ * not, the allocator made a mistake.
+ */
+ if (r->flags & IORESOURCE_PREFETCH &&
+ !(res->flags & IORESOURCE_PREFETCH))
+ return NULL;
+
+ /*
+ * If we're below a transparent bridge, there may
+ * be both a positively-decoded aperture and a
+ * subtractively-decoded region that contain the BAR.
+ * We want the positively-decoded one, so this depends
+ * on pci_bus_for_each_resource() giving us those
+ * first.
+ */
+ return r;
+ }
}
- return best;
+ return NULL;
}
/**
@@ -1178,6 +1185,11 @@ int pci_load_and_free_saved_state(struct pci_dev *dev,
}
EXPORT_SYMBOL_GPL(pci_load_and_free_saved_state);
+int __weak pcibios_enable_device(struct pci_dev *dev, int bars)
+{
+ return pci_enable_resources(dev, bars);
+}
+
static int do_pci_enable_device(struct pci_dev *dev, int bars)
{
int err;
@@ -4262,6 +4274,7 @@ void pci_reassigndev_resource_alignment(struct pci_dev *dev)
"Rounding up size of resource #%d to %#llx.\n",
i, (unsigned long long)size);
}
+ r->flags |= IORESOURCE_UNSET;
r->end = size - 1;
r->start = 0;
}
@@ -4275,6 +4288,7 @@ void pci_reassigndev_resource_alignment(struct pci_dev *dev)
r = &dev->resource[i];
if (!(r->flags & IORESOURCE_MEM))
continue;
+ r->flags |= IORESOURCE_UNSET;
r->end = resource_size(r) - 1;
r->start = 0;
}
diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c
index 509494381a7a..ef09f5f2fe6c 100644
--- a/drivers/pci/probe.c
+++ b/drivers/pci/probe.c
@@ -252,6 +252,7 @@ int __pci_read_base(struct pci_dev *dev, enum pci_bar_type type,
/* Address above 32-bit boundary; disable the BAR */
pci_write_config_dword(dev, pos, 0);
pci_write_config_dword(dev, pos + 4, 0);
+ res->flags |= IORESOURCE_UNSET;
region.start = 0;
region.end = sz64;
bar_disabled = true;
@@ -1107,10 +1108,10 @@ int pci_setup_device(struct pci_dev *dev)
pci_read_config_word(dev, PCI_SUBSYSTEM_ID, &dev->subsystem_device);
/*
- * Do the ugly legacy mode stuff here rather than broken chip
- * quirk code. Legacy mode ATA controllers have fixed
- * addresses. These are not always echoed in BAR0-3, and
- * BAR0-3 in a few cases contain junk!
+ * Do the ugly legacy mode stuff here rather than broken chip
+ * quirk code. Legacy mode ATA controllers have fixed
+ * addresses. These are not always echoed in BAR0-3, and
+ * BAR0-3 in a few cases contain junk!
*/
if (class == PCI_CLASS_STORAGE_IDE) {
u8 progif;
@@ -1121,11 +1122,15 @@ int pci_setup_device(struct pci_dev *dev)
res = &dev->resource[0];
res->flags = LEGACY_IO_RESOURCE;
pcibios_bus_to_resource(dev->bus, res, &region);
+ dev_info(&dev->dev, "legacy IDE quirk: reg 0x10: %pR\n",
+ res);
region.start = 0x3F6;
region.end = 0x3F6;
res = &dev->resource[1];
res->flags = LEGACY_IO_RESOURCE;
pcibios_bus_to_resource(dev->bus, res, &region);
+ dev_info(&dev->dev, "legacy IDE quirk: reg 0x14: %pR\n",
+ res);
}
if ((progif & 4) == 0) {
region.start = 0x170;
@@ -1133,11 +1138,15 @@ int pci_setup_device(struct pci_dev *dev)
res = &dev->resource[2];
res->flags = LEGACY_IO_RESOURCE;
pcibios_bus_to_resource(dev->bus, res, &region);
+ dev_info(&dev->dev, "legacy IDE quirk: reg 0x18: %pR\n",
+ res);
region.start = 0x376;
region.end = 0x376;
res = &dev->resource[3];
res->flags = LEGACY_IO_RESOURCE;
pcibios_bus_to_resource(dev->bus, res, &region);
+ dev_info(&dev->dev, "legacy IDE quirk: reg 0x1c: %pR\n",
+ res);
}
}
break;
diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c
index ed2ed867c34c..e7292065a1b1 100644
--- a/drivers/pci/quirks.c
+++ b/drivers/pci/quirks.c
@@ -296,6 +296,7 @@ static void quirk_s3_64M(struct pci_dev *dev)
struct resource *r = &dev->resource[0];
if ((r->start & 0x3ffffff) || r->end != r->start + 0x3ffffff) {
+ r->flags |= IORESOURCE_UNSET;
r->start = 0;
r->end = 0x3ffffff;
}
@@ -937,6 +938,8 @@ DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_FE_GATE_700C
static void quirk_dunord(struct pci_dev *dev)
{
struct resource *r = &dev->resource [1];
+
+ r->flags |= IORESOURCE_UNSET;
r->start = 0;
r->end = 0xffffff;
}
@@ -1740,6 +1743,7 @@ static void quirk_tc86c001_ide(struct pci_dev *dev)
struct resource *r = &dev->resource[0];
if (r->start & 0x8) {
+ r->flags |= IORESOURCE_UNSET;
r->start = 0;
r->end = 0xf;
}
@@ -1769,6 +1773,7 @@ static void quirk_plx_pci9050(struct pci_dev *dev)
dev_info(&dev->dev,
"Re-allocating PLX PCI 9050 BAR %u to length 256 to avoid bit 7 bug\n",
bar);
+ r->flags |= IORESOURCE_UNSET;
r->start = 0;
r->end = 0xff;
}
diff --git a/drivers/pci/rom.c b/drivers/pci/rom.c
index 5d595724e5f4..c1839450d4d6 100644
--- a/drivers/pci/rom.c
+++ b/drivers/pci/rom.c
@@ -197,8 +197,10 @@ void pci_unmap_rom(struct pci_dev *pdev, void __iomem *rom)
void pci_cleanup_rom(struct pci_dev *pdev)
{
struct resource *res = &pdev->resource[PCI_ROM_RESOURCE];
+
if (res->flags & IORESOURCE_ROM_COPY) {
kfree((void*)(unsigned long)res->start);
+ res->flags |= IORESOURCE_UNSET;
res->flags &= ~IORESOURCE_ROM_COPY;
res->start = 0;
res->end = 0;
diff --git a/drivers/pci/setup-res.c b/drivers/pci/setup-res.c
index 5c060b152ce6..7eed671d5586 100644
--- a/drivers/pci/setup-res.c
+++ b/drivers/pci/setup-res.c
@@ -44,6 +44,9 @@ void pci_update_resource(struct pci_dev *dev, int resno)
if (!res->flags)
return;
+ if (res->flags & IORESOURCE_UNSET)
+ return;
+
/*
* Ignore non-moveable resources. This might be legacy resources for
* which no functional BAR register exists or another important
@@ -101,11 +104,6 @@ void pci_update_resource(struct pci_dev *dev, int resno)
if (disable)
pci_write_config_word(dev, PCI_COMMAND, cmd);
-
- res->flags &= ~IORESOURCE_UNSET;
- dev_dbg(&dev->dev, "BAR %d: set to %pR (PCI address [%#llx-%#llx])\n",
- resno, res, (unsigned long long)region.start,
- (unsigned long long)region.end);
}
int pci_claim_resource(struct pci_dev *dev, int resource)
@@ -113,18 +111,23 @@ int pci_claim_resource(struct pci_dev *dev, int resource)
struct resource *res = &dev->resource[resource];
struct resource *root, *conflict;
+ if (res->flags & IORESOURCE_UNSET) {
+ dev_info(&dev->dev, "can't claim BAR %d %pR: no address assigned\n",
+ resource, res);
+ return -EINVAL;
+ }
+
root = pci_find_parent_resource(dev, res);
if (!root) {
- dev_info(&dev->dev, "no compatible bridge window for %pR\n",
- res);
+ dev_info(&dev->dev, "can't claim BAR %d %pR: no compatible bridge window\n",
+ resource, res);
return -EINVAL;
}
conflict = request_resource_conflict(root, res);
if (conflict) {
- dev_info(&dev->dev,
- "address space collision: %pR conflicts with %s %pR\n",
- res, conflict->name, conflict);
+ dev_info(&dev->dev, "can't claim BAR %d %pR: address conflict with %s %pR\n",
+ resource, res, conflict->name, conflict);
return -EBUSY;
}
@@ -263,6 +266,7 @@ int pci_assign_resource(struct pci_dev *dev, int resno)
resource_size_t align, size;
int ret;
+ res->flags |= IORESOURCE_UNSET;
align = pci_resource_alignment(dev, res);
if (!align) {
dev_info(&dev->dev, "BAR %d: can't assign %pR "
@@ -282,6 +286,7 @@ int pci_assign_resource(struct pci_dev *dev, int resno)
ret = pci_revert_fw_address(res, dev, resno, size);
if (!ret) {
+ res->flags &= ~IORESOURCE_UNSET;
res->flags &= ~IORESOURCE_STARTALIGN;
dev_info(&dev->dev, "BAR %d: assigned %pR\n", resno, res);
if (resno < PCI_BRIDGE_RESOURCES)
@@ -297,6 +302,7 @@ int pci_reassign_resource(struct pci_dev *dev, int resno, resource_size_t addsiz
resource_size_t new_size;
int ret;
+ res->flags |= IORESOURCE_UNSET;
if (!res->parent) {
dev_info(&dev->dev, "BAR %d: can't reassign an unassigned resource %pR "
"\n", resno, res);
@@ -307,6 +313,7 @@ int pci_reassign_resource(struct pci_dev *dev, int resno, resource_size_t addsiz
new_size = resource_size(res) + addsize;
ret = _pci_assign_resource(dev, resno, new_size, min_align);
if (!ret) {
+ res->flags &= ~IORESOURCE_UNSET;
res->flags &= ~IORESOURCE_STARTALIGN;
dev_info(&dev->dev, "BAR %d: reassigned %pR\n", resno, res);
if (resno < PCI_BRIDGE_RESOURCES)
@@ -336,9 +343,15 @@ int pci_enable_resources(struct pci_dev *dev, int mask)
(!(r->flags & IORESOURCE_ROM_ENABLE)))
continue;
+ if (r->flags & IORESOURCE_UNSET) {
+ dev_err(&dev->dev, "can't enable device: BAR %d %pR not assigned\n",
+ i, r);
+ return -EINVAL;
+ }
+
if (!r->parent) {
- dev_err(&dev->dev, "device not available "
- "(can't reserve %pR)\n", r);
+ dev_err(&dev->dev, "can't enable device: BAR %d %pR not claimed\n",
+ i, r);
return -EINVAL;
}
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-25 23:06:52 +0100