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u-boot/cmd/universe.c
Tom Rini 83d290c56f SPDX: Convert all of our single license tags to Linux Kernel style 
When U-Boot started using SPDX tags we were among the early adopters and
there weren't a lot of other examples to borrow from.  So we picked the
area of the file that usually had a full license text and replaced it
with an appropriate SPDX-License-Identifier: entry.  Since then, the
Linux Kernel has adopted SPDX tags and they place it as the very first
line in a file (except where shebangs are used, then it's second line)
and with slightly different comment styles than us.

In part due to community overlap, in part due to better tag visibility
and in part for other minor reasons, switch over to that style.

This commit changes all instances where we have a single declared
license in the tag as both the before and after are identical in tag
contents.  There's also a few places where I found we did not have a tag
and have introduced one.

Signed-off-by: Tom Rini <trini@konsulko.com>
2018-05-07 09:34:12 -04:00

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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(cmd_tbl_t *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 = 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,
"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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