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Add api for creating resource list based on 'assigned-addresses'

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According to device tree binding 'assigned-addresses' can refer to PCIE MMIO
register space. New function ofw_bus_assigned_addresses_to_rl is
provided to support it.

Submitted by: Rafal Kozik <rk@semihalf.com>
Obtained from: Semihalf
Sponsored by: Stormshield
Differential Revision: https://reviews.freebsd.org/D14750
This commit is contained in:
Marcin Wojtas 2018-04-04 12:47:41 +00:00
parent c7dbc00c34
commit d310c9e018
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=332016
2 changed files with 23 additions and 4 deletions
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25
sys/dev/ofw/ofw_bus_subr.c
View File

@ -489,9 +489,9 @@ ofw_bus_msimap(phandle_t node, uint16_t pci_rid, phandle_t *msi_parent,
return (err);
}
int
ofw_bus_reg_to_rl(device_t dev, phandle_t node, pcell_t acells, pcell_t scells,
struct resource_list *rl)
static int
ofw_bus_reg_to_rl_helper(device_t dev, phandle_t node, pcell_t acells, pcell_t scells,
struct resource_list *rl, const char *reg_source)
{
uint64_t phys, size;
ssize_t i, j, rid, nreg, ret;
@ -506,7 +506,7 @@ ofw_bus_reg_to_rl(device_t dev, phandle_t node, pcell_t acells, pcell_t scells,
if (ret == -1)
name = NULL;
ret = OF_getencprop_alloc(node, "reg", sizeof(*reg), (void **)&reg);
ret = OF_getencprop_alloc(node, reg_source, sizeof(*reg), (void **)&reg);
nreg = (ret == -1) ? 0 : ret;
if (nreg % (acells + scells) != 0) {
@ -537,6 +537,23 @@ ofw_bus_reg_to_rl(device_t dev, phandle_t node, pcell_t acells, pcell_t scells,
return (0);
}
int
ofw_bus_reg_to_rl(device_t dev, phandle_t node, pcell_t acells, pcell_t scells,
struct resource_list *rl)
{
return (ofw_bus_reg_to_rl_helper(dev, node, acells, scells, rl, "reg"));
}
int
ofw_bus_assigned_addresses_to_rl(device_t dev, phandle_t node, pcell_t acells,
pcell_t scells, struct resource_list *rl)
{
return (ofw_bus_reg_to_rl_helper(dev, node, acells, scells,
rl, "assigned-addresses"));
}
/*
* Get interrupt parent for given node.
* Returns 0 if interrupt parent doesn't exist.

2
sys/dev/ofw/ofw_bus_subr.h
View File

@ -95,6 +95,8 @@ int ofw_bus_msimap(phandle_t, uint16_t, phandle_t *, uint32_t *);
/* Routines for parsing device-tree data into resource lists. */
int ofw_bus_reg_to_rl(device_t, phandle_t, pcell_t, pcell_t,
struct resource_list *);
int ofw_bus_assigned_addresses_to_rl(device_t, phandle_t, pcell_t, pcell_t,
struct resource_list *);
int ofw_bus_intr_to_rl(device_t, phandle_t, struct resource_list *, int *);
int ofw_bus_intr_by_rid(device_t, phandle_t, int, phandle_t *, int *,
pcell_t **);