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-rw-r--r--common/cmd_universe.c391
1 files changed, 391 insertions, 0 deletions
diff --git a/common/cmd_universe.c b/common/cmd_universe.c
new file mode 100644
index 0000000..6388546
--- /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) */
generated by cgit v1.1 at 2024-11-27 22:25:12 +0000