Tundra universe support added

1 files changed, 391 insertions, 0 deletions

diff --git a/common/cmd_universe.c b/common/cmd_universe.c
new file mode 100644
index 000000000..638854604
--- /dev/null
+++ b/common/cmd_universe.c
@@ -0,0 +1,391 @@
+/*
+ * (C) Copyright 2003 Stefan Roese, stefan.roese@esd-electronics.com
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.	 See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include <common.h>
+#include <command.h>
+#include <malloc.h>
+#include <asm/io.h>
+#include <pci.h>
+
+#include <universe.h>
+
+
+#if (CONFIG_COMMANDS & CFG_CMD_UNIVERSE)
+
+#undef DBG
+
+#ifdef DBG
+# define UNI_DBG(fmt)	        printf fmt
+#else
+# define UNI_DBG(fmt)
+#endif
+
+#define UNI_PRINT(fmt)	        printf fmt
+
+
+#define PCI_VENDOR PCI_VENDOR_ID_TUNDRA
+#define PCI_DEVICE PCI_DEVICE_ID_TUNDRA_CA91C042
+
+
+typedef struct _UNI_DEV UNI_DEV;
+
+struct _UNI_DEV {
+	int            bus;
+	pci_dev_t      busdevfn;
+	UNIVERSE       *uregs;
+	unsigned int   pci_bs;
+};
+
+static UNI_DEV   *dev;
+
+
+int universe_init(void)
+{
+	int j, result, lastError = 0;
+	pci_dev_t busdevfn;
+	unsigned int val;
+
+	busdevfn = pci_find_device(PCI_VENDOR, PCI_DEVICE, 0);
+	if (busdevfn == -1) {
+		puts("No Tundra Universe found!\n");
+		return -1;
+	}
+
+	/* Lets turn Latency off */
+	pci_write_config_dword(busdevfn, 0x0c, 0);
+
+	dev = malloc(sizeof(*dev));
+	if (NULL == dev) {
+		puts("UNIVERSE: No memory!\n");
+		result = -1;
+		goto break_20;
+	}
+
+	memset(dev, 0, sizeof(*dev));
+	dev->busdevfn = busdevfn;
+
+	pci_read_config_dword(busdevfn, PCI_BASE_ADDRESS_1, &val);
+	val &= ~0xf;
+	dev->uregs = (UNIVERSE *)val;
+
+	UNI_DBG(("UNIVERSE-Base    : %p\n", dev->uregs));
+
+	/* check mapping  */
+	UNI_DBG((" Read via mapping, PCI_ID = %08X\n", readl(&dev->uregs->pci_id)));
+	if (((PCI_DEVICE <<16) | PCI_VENDOR) !=  readl(&dev->uregs->pci_id)) {
+		UNI_PRINT(("UNIVERSE: Cannot read PCI-ID via Mapping: %08x\n",
+			   readl(&dev->uregs->pci_id)));
+		result = -1;
+		goto break_30;
+	}
+
+	UNI_DBG(("PCI_BS = %08X\n", readl(&dev->uregs->pci_bs)));
+
+	dev->pci_bs = readl(&dev->uregs->pci_bs);
+
+	/* turn off windows */
+	for (j=0; j <4; j ++) {
+		writel(0x00800000, &dev->uregs->lsi[j].ctl);
+		writel(0x00800000, &dev->uregs->vsi[j].ctl);
+	}
+
+	/*
+	 * Write to Misc Register
+	 * Set VME Bus Time-out
+	 *   Arbitration Mode
+	 *   DTACK Enable
+	 */
+	writel(0x15060000, &dev->uregs->misc_ctl);
+
+	/*
+	 * Lets turn off interrupts
+	 */
+	writel(0x00000000,&dev->uregs->lint_en);   /* Disable interrupts in the Universe first */
+	writel(0x0000FFFF,&dev->uregs->lint_stat); /* Clear Any Pending Interrupts */
+	eieio();
+	writel(0x0000, &dev->uregs->lint_map0);  /* Map all ints to 0 */
+	writel(0x0000, &dev->uregs->lint_map1);  /* Map all ints to 0 */
+	eieio();
+
+ break_30:
+	free(dev);
+ break_20:
+	lastError = result;
+
+	return 0;
+}
+
+
+/*
+ * Create pci slave window (access: pci -> vme)
+ */
+int universe_pci_slave_window(unsigned int pciAddr, unsigned int vmeAddr, int size, int vam, int pms, int vdw)
+{
+	int result, i;
+	unsigned int ctl = 0;
+
+	if (NULL == dev) {
+		result = -1;
+		goto exit_10;
+	}
+
+	for (i = 0; i < 4; i++) {
+		if (0x00800000 == readl(&dev->uregs->lsi[i].ctl))
+			break;
+	}
+
+	if (i == 4) {
+		UNI_PRINT(("universe: No Image available\n"));
+		result = -1;
+		goto exit_10;
+	}
+
+	UNI_DBG(("universe: Using image %d\n", i));
+
+	writel(pciAddr , &dev->uregs->lsi[i].bs);
+	writel((pciAddr + size), &dev->uregs->lsi[i].bd);
+	writel((vmeAddr - pciAddr), &dev->uregs->lsi[i].to);
+
+	switch (vam & VME_AM_Axx) {
+	case VME_AM_A16:
+		ctl = 0x00000000;
+		break;
+	case VME_AM_A24:
+		ctl = 0x00010000;
+		break;
+	case VME_AM_A32:
+		ctl = 0x00020000;
+		break;
+	}
+
+	switch (vam & VME_AM_Mxx) {
+	case VME_AM_DATA:
+		ctl |= 0x00000000;
+		break;
+	case VME_AM_PROG:
+		ctl |= 0x00008000;
+		break;
+	}
+
+	if (vam & VME_AM_SUP) {
+		ctl |= 0x00001000;
+
+	}
+
+	switch (vdw & VME_FLAG_Dxx) {
+	case VME_FLAG_D8:
+		ctl |= 0x00000000;
+		break;
+	case VME_FLAG_D16:
+		ctl |= 0x00400000;
+		break;
+	case VME_FLAG_D32:
+		ctl |= 0x00800000;
+		break;
+	}
+
+	switch (pms & PCI_MS_Mxx) {
+	case PCI_MS_MEM:
+		ctl = 0x00000000;
+		break;
+	case PCI_MS_IO:
+		ctl = 0x00000001;
+		break;
+	case PCI_MS_CONFIG:
+		ctl = 0x00000002;
+		break;
+	}
+
+	ctl |= 0x80000000;    /* enable */
+
+	writel(ctl, &dev->uregs->lsi[i].ctl);
+
+	UNI_DBG(("universe: window-addr=%p\n", &dev->uregs->lsi[i].ctl));
+	UNI_DBG(("universe: pci slave window[%d] ctl=%08x\n", i, readl(&dev->uregs->lsi[i].ctl)));
+	UNI_DBG(("universe: pci slave window[%d] bs=%08x\n", i, readl(&dev->uregs->lsi[i].bs)));
+	UNI_DBG(("universe: pci slave window[%d] bd=%08x\n", i, readl(&dev->uregs->lsi[i].bd)));
+	UNI_DBG(("universe: pci slave window[%d] to=%08x\n", i, readl(&dev->uregs->lsi[i].to)));
+
+	return 0;
+
+ exit_10:
+	return -result;
+}
+
+
+/*
+ * Create vme slave window (access: vme -> pci)
+ */
+int universe_vme_slave_window(unsigned int vmeAddr, unsigned int pciAddr, int size, int vam, int pms)
+{
+	int result, i;
+	unsigned int ctl = 0;
+
+	if (NULL == dev) {
+		result = -1;
+		goto exit_10;
+	}
+
+	for (i = 0; i < 4; i++) {
+		if (0x00800000 == readl(&dev->uregs->vsi[i].ctl))
+			break;
+	}
+
+	if (i == 4) {
+		UNI_PRINT(("universe: No Image available\n"));
+		result = -1;
+		goto exit_10;
+	}
+
+	UNI_DBG(("universe: Using image %d\n", i));
+
+	writel(vmeAddr , &dev->uregs->vsi[i].bs);
+	writel((vmeAddr + size), &dev->uregs->vsi[i].bd);
+	writel((pciAddr - vmeAddr), &dev->uregs->vsi[i].to);
+
+	switch (vam & VME_AM_Axx) {
+	case VME_AM_A16:
+		ctl = 0x00000000;
+		break;
+	case VME_AM_A24:
+		ctl = 0x00010000;
+		break;
+	case VME_AM_A32:
+		ctl = 0x00020000;
+		break;
+	}
+
+	switch (vam & VME_AM_Mxx) {
+	case VME_AM_DATA:
+		ctl |= 0x00000000;
+		break;
+	case VME_AM_PROG:
+		ctl |= 0x00800000;
+		break;
+	}
+
+	if (vam & VME_AM_SUP) {
+		ctl |= 0x00100000;
+
+	}
+
+	switch (pms & PCI_MS_Mxx) {
+	case PCI_MS_MEM:
+		ctl = 0x00000000;
+		break;
+	case PCI_MS_IO:
+		ctl = 0x00000001;
+		break;
+	case PCI_MS_CONFIG:
+		ctl = 0x00000002;
+		break;
+	}
+
+	ctl |= 0x80f00000;    /* enable */
+
+	writel(ctl, &dev->uregs->vsi[i].ctl);
+
+	UNI_DBG(("universe: window-addr=%p\n", &dev->uregs->vsi[i].ctl));
+	UNI_DBG(("universe: vme slave window[%d] ctl=%08x\n", i, readl(&dev->uregs->vsi[i].ctl)));
+	UNI_DBG(("universe: vme slave window[%d] bs=%08x\n", i, readl(&dev->uregs->vsi[i].bs)));
+	UNI_DBG(("universe: vme slave window[%d] bd=%08x\n", i, readl(&dev->uregs->vsi[i].bd)));
+	UNI_DBG(("universe: vme slave window[%d] to=%08x\n", i, readl(&dev->uregs->vsi[i].to)));
+
+	return 0;
+
+ exit_10:
+	return -result;
+}
+
+
+/*
+ * Tundra Universe configuration
+ */
+int do_universe(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
+{
+	ulong addr1 = 0, addr2 = 0, size = 0, vam = 0, pms = 0, vdw = 0;
+	char cmd = 'x';
+
+	/* get parameter */
+	if (argc > 1)
+		cmd = argv[1][0];
+	if (argc > 2)
+		addr1 = simple_strtoul(argv[2], NULL, 16);
+	if (argc > 3)
+		addr2 = simple_strtoul(argv[3], NULL, 16);
+	if (argc > 4)
+		size = simple_strtoul(argv[4], NULL, 16);
+	if (argc > 5)
+		vam = simple_strtoul(argv[5], NULL, 16);
+	if (argc > 6)
+		pms = simple_strtoul(argv[6], NULL, 16);
+	if (argc > 7)
+		vdw = simple_strtoul(argv[7], NULL, 16);
+
+	switch (cmd) {
+	case 'i':		/* init */
+		universe_init();
+		break;
+	case 'v':		/* vme */
+		printf("Configuring Universe VME Slave Window (VME->PCI):\n");
+		printf("  vme=%08lx pci=%08lx size=%08lx vam=%02lx pms=%02lx\n",
+		       addr1, addr2, size, vam, pms);
+		universe_vme_slave_window(addr1, addr2, size, vam, pms);
+		break;
+	case 'p':		/* pci */
+		printf("Configuring Universe PCI Slave Window (PCI->VME):\n");
+		printf("  pci=%08lx vme=%08lx size=%08lx vam=%02lx pms=%02lx vdw=%02lx\n",
+		       addr1, addr2, size, vam, pms, vdw);
+		universe_pci_slave_window(addr1, addr2, size, vam, pms, vdw);
+		break;
+	default:
+		printf("Universe command %s not supported!\n", argv[1]);
+	}
+
+	return 0;
+}
+
+
+U_BOOT_CMD(
+	universe,	8,	1,	do_universe,
+	"universe- initialize and configure Turndra Universe\n",
+	"init\n"
+	"    - initialize universe\n"
+	"universe vme [vme_addr] [pci_addr] [size] [vam] [pms]\n"
+	"    - create vme slave window (access: vme->pci)\n"
+	"universe pci [pci_addr] [vme_addr] [size] [vam] [pms] [vdw]\n"
+	"    - create pci slave window (access: pci->vme)\n"
+	"    [vam] = VMEbus Address-Modifier:  01 -> A16 Address Space\n"
+	"                                      02 -> A24 Address Space\n"
+	"                                      03 -> A32 Address Space\n"
+	"                                      04 -> Supervisor AM Code\n"
+	"                                      10 -> Data AM Code\n"
+	"                                      20 -> Program AM Code\n"
+	"    [pms] = PCI Memory Space:         01 -> Memory Space\n"
+	"                                      02 -> I/O Space\n"
+	"                                      03 -> Configuration Space\n"
+	"    [vdw] = VMEbus Maximum Datawidth: 01 -> D8 Data Width\n"
+	"                                      02 -> D16 Data Width\n"
+	"                                      03 -> D32 Data Width\n"
+);
+
+#endif /* (CONFIG_COMMANDS & CFG_CMD_UNIVERSE) */