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-rw-r--r--linux/gamma_dma.c30
-rw-r--r--linux/gamma_drv.c39
-rw-r--r--linux/gamma_drv.h2
3 files changed, 65 insertions, 6 deletions
diff --git a/linux/gamma_dma.c b/linux/gamma_dma.c
index eec0f859..444f25ef 100644
--- a/linux/gamma_dma.c
+++ b/linux/gamma_dma.c
@@ -87,13 +87,31 @@ static inline void gamma_dma_dispatch(drm_device_t *dev, unsigned long address,
GAMMA_WRITE(GAMMA_DMACOUNT, length / 4);
}
-static inline void gamma_dma_quiescent(drm_device_t *dev)
+static inline void gamma_dma_quiescent_single(drm_device_t *dev)
{
while (GAMMA_READ(GAMMA_DMACOUNT))
;
while (GAMMA_READ(GAMMA_INFIFOSPACE) < 3)
;
+
+ GAMMA_WRITE(GAMMA_FILTERMODE, 1 << 10);
+ GAMMA_WRITE(GAMMA_SYNC, 0);
+
+ do {
+ while (!GAMMA_READ(GAMMA_OUTFIFOWORDS))
+ ;
+ } while (GAMMA_READ(GAMMA_OUTPUTFIFO) != GAMMA_SYNC_TAG);
+}
+
+static inline void gamma_dma_quiescent_dual(drm_device_t *dev)
+{
+ while (GAMMA_READ(GAMMA_DMACOUNT))
+ ;
+ while (GAMMA_READ(GAMMA_INFIFOSPACE) < 3)
+ ;
+
GAMMA_WRITE(GAMMA_BROADCASTMASK, 3);
+
GAMMA_WRITE(GAMMA_FILTERMODE, 1 << 10);
GAMMA_WRITE(GAMMA_SYNC, 0);
@@ -103,7 +121,6 @@ static inline void gamma_dma_quiescent(drm_device_t *dev)
;
} while (GAMMA_READ(GAMMA_OUTPUTFIFO) != GAMMA_SYNC_TAG);
-
/* Read from second MX */
do {
while (!GAMMA_READ(GAMMA_OUTFIFOWORDS + 0x10000))
@@ -788,8 +805,13 @@ int gamma_lock(struct inode *inode, struct file *filp, unsigned int cmd,
if (!ret) {
if (lock.flags & _DRM_LOCK_READY)
gamma_dma_ready(dev);
- if (lock.flags & _DRM_LOCK_QUIESCENT)
- gamma_dma_quiescent(dev);
+ if (lock.flags & _DRM_LOCK_QUIESCENT) {
+ if (gamma_found() == 1) {
+ gamma_dma_quiescent_single(dev);
+ } else {
+ gamma_dma_quiescent_dual(dev);
+ }
+ }
}
DRM_DEBUG("%d %s\n", lock.context, ret ? "interrupted" : "has lock");
diff --git a/linux/gamma_drv.c b/linux/gamma_drv.c
index a3c2bd4a..87595244 100644
--- a/linux/gamma_drv.c
+++ b/linux/gamma_drv.c
@@ -31,6 +31,7 @@
#define EXPORT_SYMTAB
#include "drmP.h"
#include "gamma_drv.h"
+#include <linux/pci.h>
EXPORT_SYMBOL(gamma_init);
EXPORT_SYMBOL(gamma_cleanup);
@@ -98,10 +99,13 @@ static drm_ioctl_desc_t gamma_ioctls[] = {
int init_module(void);
void cleanup_module(void);
static char *gamma = NULL;
+static int devices = 0;
MODULE_AUTHOR("Precision Insight, Inc., Cedar Park, Texas.");
MODULE_DESCRIPTION("3dlabs GMX 2000");
MODULE_PARM(gamma, "s");
+MODULE_PARM(devices, "i");
+MODULE_PARM_DESC(devices, "devices=x, where x is the number of MX chips on your card\n");
/* init_module is called when insmod is used to load the module */
@@ -314,6 +318,34 @@ static int gamma_takedown(drm_device_t *dev)
return 0;
}
+int gamma_found(void)
+{
+ return devices;
+}
+
+int gamma_find_devices(void)
+{
+ struct pci_dev *d = NULL, *one = NULL, *two = NULL;
+
+ d = pci_find_device(PCI_VENDOR_ID_3DLABS,PCI_DEVICE_ID_3DLABS_GAMMA,d);
+ if (!d) return 0;
+
+ one = pci_find_device(PCI_VENDOR_ID_3DLABS,PCI_DEVICE_ID_3DLABS_MX,d);
+ if (!one) return 0;
+
+ /* Make sure it's on the same card, if not - no MX's found */
+ if (PCI_SLOT(d->devfn) != PCI_SLOT(one->devfn)) return 0;
+
+ two = pci_find_device(PCI_VENDOR_ID_3DLABS,PCI_DEVICE_ID_3DLABS_MX,one);
+ if (!two) return 1;
+
+ /* Make sure it's on the same card, if not - only 1 MX found */
+ if (PCI_SLOT(d->devfn) != PCI_SLOT(two->devfn)) return 1;
+
+ /* Two MX's found - we don't currently support more than 2 */
+ return 2;
+}
+
/* gamma_init is called via init_module at module load time, or via
* linux/init/main.c (this is not currently supported). */
@@ -331,6 +363,8 @@ int gamma_init(void)
#ifdef MODULE
drm_parse_options(gamma);
#endif
+ devices = gamma_find_devices();
+ if (devices == 0) return -1;
if ((retcode = misc_register(&gamma_misc))) {
DRM_ERROR("Cannot register \"%s\"\n", GAMMA_NAME);
@@ -342,13 +376,14 @@ int gamma_init(void)
drm_mem_init();
drm_proc_init(dev);
- DRM_INFO("Initialized %s %d.%d.%d %s on minor %d\n",
+ DRM_INFO("Initialized %s %d.%d.%d %s on minor %d with %d MX devices\n",
GAMMA_NAME,
GAMMA_MAJOR,
GAMMA_MINOR,
GAMMA_PATCHLEVEL,
GAMMA_DATE,
- gamma_misc.minor);
+ gamma_misc.minor,
+ devices);
return 0;
}
diff --git a/linux/gamma_drv.h b/linux/gamma_drv.h
index d78a13eb..3d5b5dec 100644
--- a/linux/gamma_drv.h
+++ b/linux/gamma_drv.h
@@ -53,5 +53,7 @@ extern int gamma_irq_install(drm_device_t *dev, int irq);
extern int gamma_irq_uninstall(drm_device_t *dev);
extern int gamma_control(struct inode *inode, struct file *filp,
unsigned int cmd, unsigned long arg);
+extern int gamma_find_devices(void);
+extern int gamma_found(void);
#endif