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u-boot/cmd/universe.c
Tom Rini d678a59d2d Revert "Merge patch series "arm: dts: am62-beagleplay: Fix Beagleplay Ethernet"" 
When bringing in the series 'arm: dts: am62-beagleplay: Fix Beagleplay
Ethernet"' I failed to notice that b4 noticed it was based on next and
so took that as the base commit and merged that part of next to master.

This reverts commit c8ffd1356d, reversing
changes made to 2ee6f3a5f7.

Reported-by: Jonas Karlman <jonas@kwiboo.se>
Signed-off-by: Tom Rini <trini@konsulko.com>
2024-05-19 08:16:36 -06:00

367 lines
8.3 KiB
C
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// SPDX-License-Identifier: GPL-2.0+
/*
* (C) Copyright 2003 Stefan Roese, stefan.roese@esd-electronics.com
*/
#include <common.h>
#include <command.h>
#include <malloc.h>
#include <asm/io.h>
#include <pci.h>
#include <universe.h>
#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;
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);
if (val & 1) {
pci_read_config_dword(busdevfn, PCI_BASE_ADDRESS_0, &val);
}
val &= ~0xf;
dev->uregs = (UNIVERSE *)val;
debug ("UNIVERSE-Base : %p\n", dev->uregs);
/* check mapping */
debug (" Read via mapping, PCI_ID = %08X\n", readl(&dev->uregs->pci_id));
if (((PCI_DEVICE <<16) | PCI_VENDOR) != readl(&dev->uregs->pci_id)) {
printf ("UNIVERSE: Cannot read PCI-ID via Mapping: %08x\n",
readl(&dev->uregs->pci_id));
result = -1;
goto break_30;
}
debug ("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(0x15040000 | (readl(&dev->uregs->misc_ctl) & 0x00020000), &dev->uregs->misc_ctl);
if (readl(&dev->uregs->misc_ctl) & 0x00020000) {
debug ("System Controller!\n"); /* test-only */
} else {
debug ("Not System Controller!\n"); /* test-only */
}
/*
* 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();
return 0;
break_30:
free(dev);
break_20:
return result;
}
/*
* 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) {
printf ("universe: No Image available\n");
result = -1;
goto exit_10;
}
debug ("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);
debug ("universe: window-addr=%p\n", &dev->uregs->lsi[i].ctl);
debug ("universe: pci slave window[%d] ctl=%08x\n", i, readl(&dev->uregs->lsi[i].ctl));
debug ("universe: pci slave window[%d] bs=%08x\n", i, readl(&dev->uregs->lsi[i].bs));
debug ("universe: pci slave window[%d] bd=%08x\n", i, readl(&dev->uregs->lsi[i].bd));
debug ("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) {
printf ("universe: No Image available\n");
result = -1;
goto exit_10;
}
debug ("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);
debug ("universe: window-addr=%p\n", &dev->uregs->vsi[i].ctl);
debug ("universe: vme slave window[%d] ctl=%08x\n", i, readl(&dev->uregs->vsi[i].ctl));
debug ("universe: vme slave window[%d] bs=%08x\n", i, readl(&dev->uregs->vsi[i].bs));
debug ("universe: vme slave window[%d] bd=%08x\n", i, readl(&dev->uregs->vsi[i].bd));
debug ("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(struct cmd_tbl *cmdtp, int flag, int argc, char *const 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 = hextoul(argv[2], NULL);
if (argc > 3)
addr2 = hextoul(argv[3], NULL);
if (argc > 4)
size = hextoul(argv[4], NULL);
if (argc > 5)
vam = hextoul(argv[5], NULL);
if (argc > 6)
pms = hextoul(argv[6], NULL);
if (argc > 7)
vdw = hextoul(argv[7], NULL);
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,
"initialize and configure Turndra Universe",
"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"
);
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