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Fix PCIe window decoding on Armada 38x

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Original PCIe nodes for Marvell SoCs consists of ports' nodes
under main controller node. In order to properly parse
this kind of representation in DT a mechanism for traversing
through the tree required an update. Moreover, processing FDT
data consisting of more than 2 cells had to be fixed,
because the 'reg' property of mrvl,pcie node have additional
parameter in front of 64-bit address. It should be skipped
by default. This commit works properly with old mrvl,pcie
representation for Kirkwood and ArmadaXP SoCs.

Submitted by:	Wojciech Macek <wma@semihalf.com>
		Michal Mazur <mkm@semihalf.com>
Obtained from: Semihalf
Sponsored by: Stormshield, Netgate
Differential revision: https://reviews.freebsd.org/D10905
This commit is contained in:
Zbigniew Bodek 2017-06-08 16:51:46 +00:00
parent dc3b75aeef
commit 73e48bc6d6
1 changed files with 63 additions and 24 deletions
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87
sys/arm/mv/mv_common.c
View file

@ -2379,13 +2379,60 @@ moveon:
return (0);
}
static int
fdt_win_process(phandle_t child)
{
int i;
struct soc_node_spec *soc_node;
int addr_cells, size_cells;
pcell_t reg[8];
u_long size, base;
for (i = 0; soc_nodes[i].compat != NULL; i++) {
soc_node = &soc_nodes[i];
/* Setup only for enabled devices */
if (ofw_bus_node_status_okay(child) == 0)
continue;
if (!ofw_bus_node_is_compatible(child, soc_node->compat))
continue;
if (fdt_addrsize_cells(OF_parent(child), &addr_cells,
&size_cells))
return (ENXIO);
if ((sizeof(pcell_t) * (addr_cells + size_cells)) > sizeof(reg))
return (ENOMEM);
if (OF_getprop(child, "reg", &reg, sizeof(reg)) <= 0)
return (EINVAL);
if (addr_cells <= 2)
base = fdt_data_get(&reg[0], addr_cells);
else
base = fdt_data_get(&reg[addr_cells - 2], 2);
size = fdt_data_get(&reg[addr_cells], size_cells);
base = (base & 0x000fffff) | fdt_immr_va;
if (soc_node->decode_handler != NULL)
soc_node->decode_handler(base);
else
return (ENXIO);
if (MV_DUMP_WIN && (soc_node->dump_handler != NULL))
soc_node->dump_handler(base);
}
return (0);
}
static int
fdt_win_setup(void)
{
phandle_t node, child, sb;
struct soc_node_spec *soc_node;
u_long size, base;
int err, i;
phandle_t child_pci;
int err;
sb = 0;
node = OF_finddevice("/");
@ -2398,29 +2445,21 @@ fdt_win_setup(void)
*/
child = OF_child(node);
while (child != 0) {
for (i = 0; soc_nodes[i].compat != NULL; i++) {
/* Lookup for callback and run */
err = fdt_win_process(child);
if (err != 0)
return (err);
soc_node = &soc_nodes[i];
/* Process Marvell Armada-XP/38x PCIe controllers */
if (ofw_bus_node_is_compatible(child, "marvell,armada-370-pcie")) {
child_pci = OF_child(child);
while (child_pci != 0) {
err = fdt_win_process(child_pci);
if (err != 0)
return (err);
/* Setup only for enabled devices */
if (ofw_bus_node_status_okay(child) == 0)
continue;
if (!ofw_bus_node_is_compatible(child,soc_node->compat))
continue;
err = fdt_regsize(child, &base, &size);
if (err != 0)
return (err);
base = (base & 0x000fffff) | fdt_immr_va;
if (soc_node->decode_handler != NULL)
soc_node->decode_handler(base);
else
return (ENXIO);
if (MV_DUMP_WIN && (soc_node->dump_handler != NULL))
soc_node->dump_handler(base);
child_pci = OF_peer(child_pci);
}
}
/*