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cmd/universe.c
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/* * (C) Copyright 2003 Stefan Roese, stefan.roese@esd-electronics.com * |
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* SPDX-License-Identifier: GPL-2.0+ |
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*/ #include <common.h> #include <command.h> #include <malloc.h> #include <asm/io.h> #include <pci.h> #include <universe.h> |
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#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) { |
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int j, result; |
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pci_dev_t busdevfn; unsigned int val; busdevfn = pci_find_device(PCI_VENDOR, PCI_DEVICE, 0); if (busdevfn == -1) { puts("No Tundra Universe found! "); return -1; } /* Lets turn Latency off */ pci_write_config_dword(busdevfn, 0x0c, 0); dev = malloc(sizeof(*dev)); if (NULL == dev) { puts("UNIVERSE: No memory! "); result = -1; goto break_20; } memset(dev, 0, sizeof(*dev)); dev->busdevfn = busdevfn; pci_read_config_dword(busdevfn, PCI_BASE_ADDRESS_1, &val); |
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if (val & 1) { pci_read_config_dword(busdevfn, PCI_BASE_ADDRESS_0, &val); } |
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val &= ~0xf; dev->uregs = (UNIVERSE *)val; |
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debug ("UNIVERSE-Base : %p ", dev->uregs); |
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/* check mapping */ |
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debug (" Read via mapping, PCI_ID = %08X ", readl(&dev->uregs->pci_id)); |
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if (((PCI_DEVICE <<16) | PCI_VENDOR) != readl(&dev->uregs->pci_id)) { |
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printf ("UNIVERSE: Cannot read PCI-ID via Mapping: %08x ", readl(&dev->uregs->pci_id)); |
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result = -1; goto break_30; } |
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debug ("PCI_BS = %08X ", readl(&dev->uregs->pci_bs)); |
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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 */ |
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writel(0x15040000 | (readl(&dev->uregs->misc_ctl) & 0x00020000), &dev->uregs->misc_ctl); if (readl(&dev->uregs->misc_ctl) & 0x00020000) { debug ("System Controller! "); /* test-only */ } else { debug ("Not System Controller! "); /* test-only */ } |
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/* * 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(); |
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return 0; |
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break_30: free(dev); break_20: |
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return result; |
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} /* * 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) { |
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printf ("universe: No Image available "); |
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result = -1; goto exit_10; } |
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debug ("universe: Using image %d ", i); |
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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: |
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ctl |= 0x00000000; |
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break; case PCI_MS_IO: |
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ctl |= 0x00000001; |
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break; case PCI_MS_CONFIG: |
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ctl |= 0x00000002; |
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break; } ctl |= 0x80000000; /* enable */ writel(ctl, &dev->uregs->lsi[i].ctl); |
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debug ("universe: window-addr=%p ", &dev->uregs->lsi[i].ctl); debug ("universe: pci slave window[%d] ctl=%08x ", i, readl(&dev->uregs->lsi[i].ctl)); debug ("universe: pci slave window[%d] bs=%08x ", i, readl(&dev->uregs->lsi[i].bs)); debug ("universe: pci slave window[%d] bd=%08x ", i, readl(&dev->uregs->lsi[i].bd)); debug ("universe: pci slave window[%d] to=%08x ", i, readl(&dev->uregs->lsi[i].to)); |
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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) { |
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printf ("universe: No Image available "); |
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result = -1; goto exit_10; } |
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debug ("universe: Using image %d ", i); |
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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: |
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ctl |= 0x00000000; |
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break; case PCI_MS_IO: |
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ctl |= 0x00000001; |
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break; case PCI_MS_CONFIG: |
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ctl |= 0x00000002; |
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break; } ctl |= 0x80f00000; /* enable */ writel(ctl, &dev->uregs->vsi[i].ctl); |
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debug ("universe: window-addr=%p ", &dev->uregs->vsi[i].ctl); debug ("universe: vme slave window[%d] ctl=%08x ", i, readl(&dev->uregs->vsi[i].ctl)); debug ("universe: vme slave window[%d] bs=%08x ", i, readl(&dev->uregs->vsi[i].bs)); debug ("universe: vme slave window[%d] bd=%08x ", i, readl(&dev->uregs->vsi[i].bd)); debug ("universe: vme slave window[%d] to=%08x ", i, readl(&dev->uregs->vsi[i].to)); |
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return 0; exit_10: return -result; } /* * Tundra Universe configuration */ |
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int do_universe(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) |
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{ 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): "); printf(" vme=%08lx pci=%08lx size=%08lx vam=%02lx pms=%02lx ", 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): "); printf(" pci=%08lx vme=%08lx size=%08lx vam=%02lx pms=%02lx vdw=%02lx ", addr1, addr2, size, vam, pms, vdw); universe_pci_slave_window(addr1, addr2, size, vam, pms, vdw); break; default: printf("Universe command %s not supported! ", argv[1]); } return 0; } U_BOOT_CMD( universe, 8, 1, do_universe, |
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"initialize and configure Turndra Universe", |
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"init " " - initialize universe " "universe vme [vme_addr] [pci_addr] [size] [vam] [pms] " " - create vme slave window (access: vme->pci) " "universe pci [pci_addr] [vme_addr] [size] [vam] [pms] [vdw] " " - create pci slave window (access: pci->vme) " " [vam] = VMEbus Address-Modifier: 01 -> A16 Address Space " " 02 -> A24 Address Space " " 03 -> A32 Address Space " " 04 -> Supervisor AM Code " " 10 -> Data AM Code " " 20 -> Program AM Code " " [pms] = PCI Memory Space: 01 -> Memory Space " " 02 -> I/O Space " " 03 -> Configuration Space " " [vdw] = VMEbus Maximum Datawidth: 01 -> D8 Data Width " " 02 -> D16 Data Width " |
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" 03 -> D32 Data Width" |
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); |