From: Joshua Wise <joshua@rebirth.joshuawise.com>
Date: Tue, 25 Nov 2008 08:26:35 +0000 (-0500)
Subject: Add a FB access layer.
X-Git-Url: http://git.joshuawise.com/netwatch.git/commitdiff_plain/34a7d0d2f76c71165cc643d5b48061786a83fc87

Add a FB access layer.
---

diff --git a/aseg-paging/Makefile b/aseg-paging/Makefile
index 9117d9d..c9a8f43 100644
--- a/aseg-paging/Makefile
+++ b/aseg-paging/Makefile
@@ -43,6 +43,9 @@ OBJS =	../ich2/smi.o \
 	../net/http/fs.o \
 	../net/http/httpd.o \
 	../net/3c90x.o \
+	../video/tnt2.o \
+	../video/fb.o \
+	drivers.o \
 	../lib/minilib.o \
 	../lib/doprnt.o \
 	../lib/sprintf.o \
diff --git a/aseg-paging/drivers.c b/aseg-paging/drivers.c
new file mode 100644
index 0000000..fca0bfe
--- /dev/null
+++ b/aseg-paging/drivers.c
@@ -0,0 +1,12 @@
+#include <pci.h>
+
+extern struct pci_driver a3c90x_driver;
+extern struct pci_driver tnt2_driver;
+
+struct pci_driver *drivers[] =
+{
+	&a3c90x_driver,
+	&tnt2_driver,
+	0
+};
+
diff --git a/aseg-paging/firstrun.c b/aseg-paging/firstrun.c
index ca611fa..48a1ac0 100644
--- a/aseg-paging/firstrun.c
+++ b/aseg-paging/firstrun.c
@@ -13,8 +13,11 @@ extern void timer_handler(smi_event_t ev);
 extern void kbc_handler(smi_event_t ev);
 extern void gbl_rls_handler(smi_event_t ev);
 
+extern pci_driver_t *drivers[];
+
 void smi_init() {
 	smram_state_t smram;
+	pci_driver_t **driver;
 	
 	smram = smram_save_state();
 	smram_tseg_set_state(SMRAM_TSEG_OPEN);
@@ -31,6 +34,15 @@ void smi_init() {
 	smi_disable();
 	
 	eth_init();
+	
+	/* After everything is initialized, load drivers. */
+	for (driver = drivers; *driver; driver++)
+	{
+		outputf("Probing driver: %s", (*driver)->name);
+		if (pci_probe_driver(*driver))
+			output("Found a card");
+	}
+	outputf("Driver probe complete");
 
 	smi_register_handler(SMI_EVENT_FAST_TIMER, timer_handler);
 	smi_enable_event(SMI_EVENT_FAST_TIMER);
diff --git a/gendrv/tnt2.c b/gendrv/tnt2.c
deleted file mode 100644
index ead2266..0000000
--- a/gendrv/tnt2.c
+++ /dev/null
@@ -1,20 +0,0 @@
-#include <io.h>
-#include <pci.h>
-
-static void *fbaddr;
-
-static int tnt2_probe(struct pci_dev *pci, void *data)
-{
-	
-}
-
-static struct pci_id tnt2_pci[] = {
-{0x10DE, 0x0028, "TNT2", "RIVA TNT2"}
-};
-
-struct pci_driver tnt2_driver = {
-	.name     = "tnt2",
-	.probe    = tnt2_probe,
-	.ids      = tnt2_pci,
-	.id_count = sizeof(tnt2_pci)/sizeof(tnt2_pci[0]),
-};
diff --git a/include/pci.h b/include/pci.h
index 9f7e6b9..9e964ca 100644
--- a/include/pci.h
+++ b/include/pci.h
@@ -55,6 +55,6 @@ typedef struct pci_driver {
 	int id_count;
 } pci_driver_t;
 
-int pci_probe_driver(pci_driver_t driver);
+int pci_probe_driver(pci_driver_t *driver);
 
 #endif
diff --git a/net/net.c b/net/net.c
index 2022cca..52ab38f 100644
--- a/net/net.c
+++ b/net/net.c
@@ -159,6 +159,5 @@ void eth_init()
 	/* Required for DMA to work. :( */
 	smram_tseg_set_state(SMRAM_TSEG_OPEN);
 	lwip_init();
-	pci_probe_driver(a3c90x_driver);
 	httpd_init();
 }
diff --git a/pci/pci.c b/pci/pci.c
index fbea894..5fd03b4 100644
--- a/pci/pci.c
+++ b/pci/pci.c
@@ -115,7 +115,7 @@ static int _probefn(pci_dev_t *dev, void *d)
 	return 0;
 }
 
-int pci_probe_driver(pci_driver_t driver)
+int pci_probe_driver(pci_driver_t *driver)
 {
-	return pci_probe(_probefn, &driver);
+	return pci_probe(_probefn, driver);
 }
diff --git a/video/fb.c b/video/fb.c
new file mode 100644
index 0000000..ed404e1
--- /dev/null
+++ b/video/fb.c
@@ -0,0 +1,3 @@
+#include <fb.h>
+
+struct fbdevice *fb;
diff --git a/video/tnt2.c b/video/tnt2.c
new file mode 100644
index 0000000..73a3d0b
--- /dev/null
+++ b/video/tnt2.c
@@ -0,0 +1,61 @@
+#include <minilib.h>
+#include <io.h>
+#include <pci.h>
+#include <output.h>
+#include <fb.h>
+
+static void tnt2_getvmode(void *priv);
+
+static struct fbdevice tnt2_fb = {
+	.getvmode = &tnt2_getvmode,
+};
+
+static unsigned int vgard(unsigned char a)
+{
+	outb(a, 0x3D4);
+	return (unsigned int)inb(0x3D5);
+}
+
+static void tnt2_getvmode(void *priv)
+{
+	tnt2_fb.curmode.xres = (vgard(0x1) + 1) * 8;
+	tnt2_fb.curmode.yres = (vgard(0x12) | (vgard(0x7) & 2) << 7 | (vgard(0x7) & 0x40) << 3) + 1;
+	switch (vgard(0x28))
+	{
+	case 4:
+		tnt2_fb.curmode.format = FB_RGB888;
+		tnt2_fb.curmode.bytestride = 4;
+		tnt2_fb.curmode.text = 0;
+		break;
+	case 0:
+		tnt2_fb.curmode.text = 1;
+		break;
+	default:
+		outputf("Unknown TNT2 format %d", vgard(0x28));
+		break;
+	}
+}
+
+static int tnt2_probe(struct pci_dev *pci, void *data)
+{
+	if (pci->bars[1].type != PCI_BAR_MEMORY32)
+	{
+		output("TNT2 BAR1 is not memory32?");
+		return 0;
+	}
+	tnt2_fb.fbaddr = (void *)pci->bars[1].addr;
+	fb = &tnt2_fb;
+	outputf("Found TNT2 with FB at %08x", tnt2_fb.fbaddr);
+	return 1;
+}
+
+static struct pci_id tnt2_pci[] = {
+	{0x10DE, 0x0028, "TNT2", "RIVA TNT2"}
+};
+
+struct pci_driver tnt2_driver = {
+	.name     = "tnt2",
+	.probe    = tnt2_probe,
+	.ids      = tnt2_pci,
+	.id_count = sizeof(tnt2_pci)/sizeof(tnt2_pci[0]),
+};