[PATCH v3 09/24] i915: switch from acpi_os_ioremap to memremap

Dan Williams
2015-07-30T17:00:28Z

i915 expects the OpRegion to be cached (i.e. not __iomem), so explicitly
map it with memremap rather than the implied cache setting of
acpi_os_ioremap().

Cc: Daniel Vetter <daniel.vetter@intel.com>
Cc: Jani Nikula <jani.nikula@linux.intel.com>
Cc: intel-gfx@lists.freedesktop.org
Cc: David Airlie <airlied@linux.ie>
Cc: dri-devel@lists.freedesktop.org
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
---
drivers/gpu/drm/i915/i915_debugfs.c | 2 -
drivers/gpu/drm/i915/i915_drv.h | 12 ++---
drivers/gpu/drm/i915/intel_bios.c | 7 +--
drivers/gpu/drm/i915/intel_opregion.c | 87 ++++++++++++++++-----------------
drivers/gpu/drm/i915/intel_panel.c | 2 -
5 files changed, 52 insertions(+), 58 deletions(-)

diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c
index 82bbe3f2a7e1..9228d6048bde 100644
--- a/drivers/gpu/drm/i915/i915_debugfs.c
+++ b/drivers/gpu/drm/i915/i915_debugfs.c
@@ -1831,7 +1831,7 @@ static int i915_opregion(struct seq_file *m, void *unused)
goto out;

if (opregion->header) {
- memcpy_fromio(data, opregion->header, OPREGION_SIZE);
+ memcpy(data, opregion->header, OPREGION_SIZE);
seq_write(m, data, OPREGION_SIZE);
}

diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index 5f27290201e0..2efbfd53be51 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -403,14 +403,14 @@ struct opregion_swsci;
struct opregion_asle;

struct intel_opregion {
- struct opregion_header __iomem *header;
- struct opregion_acpi __iomem *acpi;
- struct opregion_swsci __iomem *swsci;
+ struct opregion_header *header;
+ struct opregion_acpi *acpi;
+ struct opregion_swsci *swsci;
u32 swsci_gbda_sub_functions;
u32 swsci_sbcb_sub_functions;
- struct opregion_asle __iomem *asle;
- void __iomem *vbt;
- u32 __iomem *lid_state;
+ struct opregion_asle *asle;
+ void *vbt;
+ u32 *lid_state;
struct work_struct asle_work;
};
#define OPREGION_SIZE (8*1024)
diff --git a/drivers/gpu/drm/i915/intel_bios.c b/drivers/gpu/drm/i915/intel_bios.c
index 198fc3c3291b..3e2dca4f5e6e 100644
--- a/drivers/gpu/drm/i915/intel_bios.c
+++ b/drivers/gpu/drm/i915/intel_bios.c
@@ -1206,11 +1206,10 @@ static const struct bdb_header *validate_vbt(const void __iomem *_base,
{
/*
* This is the one place where we explicitly discard the address space
- * (__iomem) of the BIOS/VBT. (And this will cause a sparse complaint.)
- * From now on everything is based on 'base', and treated as regular
- * memory.
+ * (__iomem) of the BIOS/VBT. From now on everything is based on
+ * 'base', and treated as regular memory.
*/
- const void *base = (const void *) _base;
+ const void *base = (const void __force *) _base;
size_t offset = _vbt - _base;
const struct vbt_header *vbt = base + offset;
const struct bdb_header *bdb;
diff --git a/drivers/gpu/drm/i915/intel_opregion.c b/drivers/gpu/drm/i915/intel_opregion.c
index 481337436f72..7deed1062871 100644
--- a/drivers/gpu/drm/i915/intel_opregion.c
+++ b/drivers/gpu/drm/i915/intel_opregion.c
@@ -232,7 +232,7 @@ struct opregion_asle {
static int swsci(struct drm_device *dev, u32 function, u32 parm, u32 *parm_out)
{
struct drm_i915_private *dev_priv = dev->dev_private;
- struct opregion_swsci __iomem *swsci = dev_priv->opregion.swsci;
+ struct opregion_swsci *swsci = dev_priv->opregion.swsci;
u32 main_function, sub_function, scic;
u16 pci_swsci;
u32 dslp;
@@ -257,7 +257,7 @@ static int swsci(struct drm_device *dev, u32 function, u32 parm, u32 *parm_out)
}

/* Driver sleep timeout in ms. */
- dslp = ioread32(&swsci->dslp);
+ dslp = swsci->dslp;
if (!dslp) {
/* The spec says 2ms should be the default, but it's too small
* for some machines. */
@@ -270,7 +270,7 @@ static int swsci(struct drm_device *dev, u32 function, u32 parm, u32 *parm_out)
}

/* The spec tells us to do this, but we are the only user... */
- scic = ioread32(&swsci->scic);
+ scic = swsci->scic;
if (scic & SWSCI_SCIC_INDICATOR) {
DRM_DEBUG_DRIVER("SWSCI request already in progress\n");
return -EBUSY;
@@ -278,8 +278,8 @@ static int swsci(struct drm_device *dev, u32 function, u32 parm, u32 *parm_out)

scic = function | SWSCI_SCIC_INDICATOR;

- iowrite32(parm, &swsci->parm);
- iowrite32(scic, &swsci->scic);
+ swsci->parm = parm;
+ swsci->scic = scic;

/* Ensure SCI event is selected and event trigger is cleared. */
pci_read_config_word(dev->pdev, PCI_SWSCI, &pci_swsci);
@@ -294,7 +294,7 @@ static int swsci(struct drm_device *dev, u32 function, u32 parm, u32 *parm_out)
pci_write_config_word(dev->pdev, PCI_SWSCI, pci_swsci);

/* Poll for the result. */
-#define C (((scic = ioread32(&swsci->scic)) & SWSCI_SCIC_INDICATOR) == 0)
+#define C (((scic = swsci->scic) & SWSCI_SCIC_INDICATOR) == 0)
if (wait_for(C, dslp)) {
DRM_DEBUG_DRIVER("SWSCI request timed out\n");
return -ETIMEDOUT;
@@ -310,7 +310,7 @@ static int swsci(struct drm_device *dev, u32 function, u32 parm, u32 *parm_out)
}

if (parm_out)
- *parm_out = ioread32(&swsci->parm);
+ *parm_out = swsci->parm;

return 0;

@@ -400,7 +400,7 @@ static u32 asle_set_backlight(struct drm_device *dev, u32 bclp)
{
struct drm_i915_private *dev_priv = dev->dev_private;
struct intel_connector *intel_connector;
- struct opregion_asle __iomem *asle = dev_priv->opregion.asle;
+ struct opregion_asle *asle = dev_priv->opregion.asle;

DRM_DEBUG_DRIVER("bclp = 0x%08x\n", bclp);

@@ -425,7 +425,7 @@ static u32 asle_set_backlight(struct drm_device *dev, u32 bclp)
DRM_DEBUG_KMS("updating opregion backlight %d/255\n", bclp);
list_for_each_entry(intel_connector, &dev->mode_config.connector_list, base.head)
intel_panel_set_backlight_acpi(intel_connector, bclp, 255);
- iowrite32(DIV_ROUND_UP(bclp * 100, 255) | ASLE_CBLV_VALID, &asle->cblv);
+ asle->cblv = DIV_ROUND_UP(bclp * 100, 255) | ASLE_CBLV_VALID;

drm_modeset_unlock(&dev->mode_config.connection_mutex);

@@ -512,14 +512,14 @@ static void asle_work(struct work_struct *work)
struct drm_i915_private *dev_priv =
container_of(opregion, struct drm_i915_private, opregion);
struct drm_device *dev = dev_priv->dev;
- struct opregion_asle __iomem *asle = dev_priv->opregion.asle;
+ struct opregion_asle *asle = dev_priv->opregion.asle;
u32 aslc_stat = 0;
u32 aslc_req;

if (!asle)
return;

- aslc_req = ioread32(&asle->aslc);
+ aslc_req = asle->aslc;

if (!(aslc_req & ASLC_REQ_MSK)) {
DRM_DEBUG_DRIVER("No request on ASLC interrupt 0x%08x\n",
@@ -528,34 +528,34 @@ static void asle_work(struct work_struct *work)
}

if (aslc_req & ASLC_SET_ALS_ILLUM)
- aslc_stat |= asle_set_als_illum(dev, ioread32(&asle->alsi));
+ aslc_stat |= asle_set_als_illum(dev, asle->alsi);

if (aslc_req & ASLC_SET_BACKLIGHT)
- aslc_stat |= asle_set_backlight(dev, ioread32(&asle->bclp));
+ aslc_stat |= asle_set_backlight(dev, asle->bclp);

if (aslc_req & ASLC_SET_PFIT)
- aslc_stat |= asle_set_pfit(dev, ioread32(&asle->pfit));
+ aslc_stat |= asle_set_pfit(dev, asle->pfit);

if (aslc_req & ASLC_SET_PWM_FREQ)
- aslc_stat |= asle_set_pwm_freq(dev, ioread32(&asle->pfmb));
+ aslc_stat |= asle_set_pwm_freq(dev, asle->pfmb);

if (aslc_req & ASLC_SUPPORTED_ROTATION_ANGLES)
aslc_stat |= asle_set_supported_rotation_angles(dev,
- ioread32(&asle->srot));
+ asle->srot);

if (aslc_req & ASLC_BUTTON_ARRAY)
- aslc_stat |= asle_set_button_array(dev, ioread32(&asle->iuer));
+ aslc_stat |= asle_set_button_array(dev, asle->iuer);

if (aslc_req & ASLC_CONVERTIBLE_INDICATOR)
- aslc_stat |= asle_set_convertible(dev, ioread32(&asle->iuer));
+ aslc_stat |= asle_set_convertible(dev, asle->iuer);

if (aslc_req & ASLC_DOCKING_INDICATOR)
- aslc_stat |= asle_set_docking(dev, ioread32(&asle->iuer));
+ aslc_stat |= asle_set_docking(dev, asle->iuer);

if (aslc_req & ASLC_ISCT_STATE_CHANGE)
aslc_stat |= asle_isct_state(dev);

- iowrite32(aslc_stat, &asle->aslc);
+ asle->aslc = aslc_stat;
}

void intel_opregion_asle_intr(struct drm_device *dev)
@@ -580,8 +580,8 @@ static int intel_opregion_video_event(struct notifier_block *nb,
Linux, these are handled by the dock, button and video drivers.
*/

- struct opregion_acpi __iomem *acpi;
struct acpi_bus_event *event = data;
+ struct opregion_acpi *acpi;
int ret = NOTIFY_OK;

if (strcmp(event->device_class, ACPI_VIDEO_CLASS) != 0)
@@ -592,11 +592,10 @@ static int intel_opregion_video_event(struct notifier_block *nb,

acpi = system_opregion->acpi;

- if (event->type == 0x80 &&
- (ioread32(&acpi->cevt) & 1) == 0)
+ if (event->type == 0x80 && ((acpi->cevt & 1) == 0))
ret = NOTIFY_BAD;

- iowrite32(0, &acpi->csts);
+ acpi->csts = 0;

return ret;
}
@@ -620,7 +619,6 @@ static void intel_didl_outputs(struct drm_device *dev)
struct acpi_device *acpi_dev, *acpi_cdev, *acpi_video_bus = NULL;
unsigned long long device_id;
acpi_status status;
- u32 temp;
int i = 0;

handle = ACPI_HANDLE(&dev->pdev->dev);
@@ -655,8 +653,7 @@ static void intel_didl_outputs(struct drm_device *dev)
if (ACPI_SUCCESS(status)) {
if (!device_id)
goto blind_set;
- iowrite32((u32)(device_id & 0x0f0f),
- &opregion->acpi->didl[i]);
+ opregion->acpi->didl[i] = device_id & 0x0f0f;
i++;
}
}
@@ -664,7 +661,7 @@ static void intel_didl_outputs(struct drm_device *dev)
end:
/* If fewer than 8 outputs, the list must be null terminated */
if (i < 8)
- iowrite32(0, &opregion->acpi->didl[i]);
+ opregion->acpi->didl[i] = 0;
return;

blind_set:
@@ -698,9 +695,7 @@ blind_set:
output_type = ACPI_LVDS_OUTPUT;
break;
}
- temp = ioread32(&opregion->acpi->didl[i]);
- iowrite32(temp | (1<<31) | output_type | i,
- &opregion->acpi->didl[i]);
+ opregion->acpi->didl[i] |= (1<<31) | output_type | i;
i++;
}
goto end;
@@ -720,8 +715,8 @@ static void intel_setup_cadls(struct drm_device *dev)
* display switching hotkeys. Just like DIDL, CADL is NULL-terminated if
* there are less than eight devices. */
do {
- disp_id = ioread32(&opregion->acpi->didl[i]);
- iowrite32(disp_id, &opregion->acpi->cadl[i]);
+ disp_id = opregion->acpi->didl[i];
+ opregion->acpi->cadl[i] = disp_id;
} while (++i < 8 && disp_id != 0);
}

@@ -740,16 +735,16 @@ void intel_opregion_init(struct drm_device *dev)
/* Notify BIOS we are ready to handle ACPI video ext notifs.
* Right now, all the events are handled by the ACPI video module.
* We don't actually need to do anything with them. */
- iowrite32(0, &opregion->acpi->csts);
- iowrite32(1, &opregion->acpi->drdy);
+ opregion->acpi->csts = 0;
+ opregion->acpi->drdy = 1;

system_opregion = opregion;
register_acpi_notifier(&intel_opregion_notifier);
}

if (opregion->asle) {
- iowrite32(ASLE_TCHE_BLC_EN, &opregion->asle->tche);
- iowrite32(ASLE_ARDY_READY, &opregion->asle->ardy);
+ opregion->asle->tche = ASLE_TCHE_BLC_EN;
+ opregion->asle->ardy = ASLE_ARDY_READY;
}
}

@@ -762,19 +757,19 @@ void intel_opregion_fini(struct drm_device *dev)
return;

if (opregion->asle)
- iowrite32(ASLE_ARDY_NOT_READY, &opregion->asle->ardy);
+ opregion->asle->ardy = ASLE_ARDY_NOT_READY;

cancel_work_sync(&dev_priv->opregion.asle_work);

if (opregion->acpi) {
- iowrite32(0, &opregion->acpi->drdy);
+ opregion->acpi->drdy = 0;

system_opregion = NULL;
unregister_acpi_notifier(&intel_opregion_notifier);
}

/* just clear all opregion memory pointers now */
- iounmap(opregion->header);
+ memunmap(opregion->header);
opregion->header = NULL;
opregion->acpi = NULL;
opregion->swsci = NULL;
@@ -847,10 +842,10 @@ int intel_opregion_setup(struct drm_device *dev)
{
struct drm_i915_private *dev_priv = dev->dev_private;
struct intel_opregion *opregion = &dev_priv->opregion;
- void __iomem *base;
u32 asls, mboxes;
char buf[sizeof(OPREGION_SIGNATURE)];
int err = 0;
+ void *base;

pci_read_config_dword(dev->pdev, PCI_ASLS, &asls);
DRM_DEBUG_DRIVER("graphic opregion physical addr: 0x%x\n", asls);
@@ -863,11 +858,11 @@ int intel_opregion_setup(struct drm_device *dev)
INIT_WORK(&opregion->asle_work, asle_work);
#endif

- base = acpi_os_ioremap(asls, OPREGION_SIZE);
+ base = memremap(asls, OPREGION_SIZE, MEMREMAP_WB);
if (!base)
return -ENOMEM;

- memcpy_fromio(buf, base, sizeof(buf));
+ memcpy(buf, base, sizeof(buf));

if (memcmp(buf, OPREGION_SIGNATURE, 16)) {
DRM_DEBUG_DRIVER("opregion signature mismatch\n");
@@ -879,7 +874,7 @@ int intel_opregion_setup(struct drm_device *dev)

opregion->lid_state = base + ACPI_CLID;

- mboxes = ioread32(&opregion->header->mboxes);
+ mboxes = opregion->header->mboxes;
if (mboxes & MBOX_ACPI) {
DRM_DEBUG_DRIVER("Public ACPI methods supported\n");
opregion->acpi = base + OPREGION_ACPI_OFFSET;
@@ -894,12 +889,12 @@ int intel_opregion_setup(struct drm_device *dev)
DRM_DEBUG_DRIVER("ASLE supported\n");
opregion->asle = base + OPREGION_ASLE_OFFSET;

- iowrite32(ASLE_ARDY_NOT_READY, &opregion->asle->ardy);
+ opregion->asle->ardy = ASLE_ARDY_NOT_READY;
}

return 0;

err_out:
- iounmap(base);
+ memunmap(base);
return err;
}
diff --git a/drivers/gpu/drm/i915/intel_panel.c b/drivers/gpu/drm/i915/intel_panel.c
index 55aad2322e10..3985396e46a2 100644
--- a/drivers/gpu/drm/i915/intel_panel.c
+++ b/drivers/gpu/drm/i915/intel_panel.c
@@ -384,7 +384,7 @@ intel_panel_detect(struct drm_device *dev)

/* Assume that the BIOS does not lie through the OpRegion... */
if (!i915.panel_ignore_lid && dev_priv->opregion.lid_state) {
- return ioread32(dev_priv->opregion.lid_state) & 0x1 ?
+ return *(dev_priv->opregion.lid_state) & 0x1 ?
connector_status_connected :
connector_status_disconnected;
}