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bus: mvebu-mbus: Add new API for window creation

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We add an API to create MBus address decoding windows from the target
ID and attribute. This function will be used later and deprecate the
current name based scheme.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Tested-by: Andrew Lunn <andrew@lunn.ch>
Tested-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Signed-off-by: Jason Cooper <jason@lakedaemon.net>
This commit is contained in:
Thomas Petazzoni 2013-07-26 10:17:39 -03:00 committed by Jason Cooper
parent 9b6e4c0a58
commit 6a63b098f0
2 changed files with 31 additions and 8 deletions
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33
drivers/bus/mvebu-mbus.c
View file

@ -748,6 +748,22 @@ static const struct of_device_id of_mvebu_mbus_ids[] = {
/*
* Public API of the driver
*/
int mvebu_mbus_add_window_remap_by_id(unsigned int target,
unsigned int attribute,
phys_addr_t base, size_t size,
phys_addr_t remap)
{
struct mvebu_mbus_state *s = &mbus_state;
if (!mvebu_mbus_window_conflicts(s, base, size, target, attribute)) {
pr_err("cannot add window '%x:%x', conflicts with another window\n",
target, attribute);
return -EINVAL;
}
return mvebu_mbus_alloc_window(s, base, size, remap, target, attribute);
}
int mvebu_mbus_add_window_remap_flags(const char *devname, phys_addr_t base,
size_t size, phys_addr_t remap,
unsigned int flags)
@ -776,14 +792,8 @@ int mvebu_mbus_add_window_remap_flags(const char *devname, phys_addr_t base,
else if (flags == MVEBU_MBUS_PCI_WA)
attr |= 0x28;
if (!mvebu_mbus_window_conflicts(s, base, size, target, attr)) {
pr_err("cannot add window '%s', conflicts with another window\n",
devname);
return -EINVAL;
}
return mvebu_mbus_alloc_window(s, base, size, remap, target, attr);
return mvebu_mbus_add_window_remap_by_id(target, attr, base,
size, remap);
}
int mvebu_mbus_add_window(const char *devname, phys_addr_t base, size_t size)
@ -792,6 +802,13 @@ int mvebu_mbus_add_window(const char *devname, phys_addr_t base, size_t size)
MVEBU_MBUS_NO_REMAP, 0);
}
int mvebu_mbus_add_window_by_id(unsigned int target, unsigned int attribute,
phys_addr_t base, size_t size)
{
return mvebu_mbus_add_window_remap_by_id(target, attribute, base,
size, MVEBU_MBUS_NO_REMAP);
}
int mvebu_mbus_del_window(phys_addr_t base, size_t size)
{
int win;

6
include/linux/mbus.h
View file

@ -62,8 +62,14 @@ static inline const struct mbus_dram_target_info *mv_mbus_dram_info(void)
int mvebu_mbus_add_window_remap_flags(const char *devname, phys_addr_t base,
size_t size, phys_addr_t remap,
unsigned int flags);
int mvebu_mbus_add_window_remap_by_id(unsigned int target,
unsigned int attribute,
phys_addr_t base, size_t size,
phys_addr_t remap);
int mvebu_mbus_add_window(const char *devname, phys_addr_t base,
size_t size);
int mvebu_mbus_add_window_by_id(unsigned int target, unsigned int attribute,
phys_addr_t base, size_t size);
int mvebu_mbus_del_window(phys_addr_t base, size_t size);
int mvebu_mbus_init(const char *soc, phys_addr_t mbus_phys_base,
size_t mbus_size, phys_addr_t sdram_phys_base,