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Commit 85320724 authored by danh-arm's avatar danh-arm
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Merge pull request #516 from vikramkanigiri/vk/ccn-fix-dvm-entry 

Bug fix: Rectify logic to enter or exit from DVM domain
parents a1411b29 3105f7ba
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drivers/arm/ccn/ccn.c
View file @ 85320724
......@@ -268,7 +268,7 @@ static unsigned long long ccn_master_to_rn_id_map(unsigned long long master_map)
/*******************************************************************************
* This function executes the necessary operations to add or remove Request node
* IDs specified in the 'rn_id_map' bitmap from the snoop/DVM domains specified
* in the 'hn_id_map'. The 'region_id' specifies the ID of the first HN-F/HN-I
* in the 'hn_id_map'. The 'region_id' specifies the ID of the first HN-F/MN
* on which the operation should be performed. 'op_reg_offset' specifies the
* type of operation (add/remove). 'stat_reg_offset' specifies the register
* which should be polled to determine if the operation has completed or not.
......@@ -309,35 +309,6 @@ static void ccn_snoop_dvm_do_op(unsigned long long rn_id_map,
#endif
}
/*******************************************************************************
* This function reads the bitmap of Home nodes on the basis of the
* 'mn_hn_id_reg_offset' parameter from the Miscellaneous node's (MN)
* programmer's view. The MN has a register which carries the bitmap of present
* Home nodes of each type i.e. HN-Fs, HN-Is & HN-Ds. It calls
* 'ccn_snoop_dvm_do_op()' with this information to perform the actual
* operation.
******************************************************************************/
static void ccn_snoop_dvm_domain_common(unsigned long long rn_id_map,
unsigned int hn_op_reg_offset,
unsigned int hn_stat_reg_offset,
unsigned int mn_hn_id_reg_offset,
unsigned int hn_region_id)
{
unsigned long long mn_hn_id_map;
assert(ccn_plat_desc);
assert(ccn_plat_desc->periphbase);
mn_hn_id_map = ccn_reg_read(ccn_plat_desc->periphbase,
MN_REGION_ID,
mn_hn_id_reg_offset);
ccn_snoop_dvm_do_op(rn_id_map,
mn_hn_id_map,
hn_region_id,
hn_op_reg_offset,
hn_stat_reg_offset);
}
/*******************************************************************************
* The following functions provide the boot and runtime API to the platform for
* adding and removing master interfaces from the snoop/DVM domains. A bitmap of
......@@ -357,17 +328,18 @@ void ccn_enter_snoop_dvm_domain(unsigned long long master_iface_map)
unsigned long long rn_id_map;
rn_id_map = ccn_master_to_rn_id_map(master_iface_map);
ccn_snoop_dvm_domain_common(rn_id_map,
HNF_SDC_SET_OFFSET,
HNF_SDC_STAT_OFFSET,
MN_HNF_NODEID_OFFSET,
HNF_REGION_ID_START);
ccn_snoop_dvm_domain_common(rn_id_map,
MN_DDC_SET_OFF,
MN_DDC_STAT_OFFSET,
MN_HNI_NODEID_OFFSET,
MN_REGION_ID);
ccn_snoop_dvm_do_op(rn_id_map,
CCN_GET_HN_NODEID_MAP(ccn_plat_desc->periphbase,
MN_HNF_NODEID_OFFSET),
HNF_REGION_ID_START,
HNF_SDC_SET_OFFSET,
HNF_SDC_STAT_OFFSET);
ccn_snoop_dvm_do_op(rn_id_map,
CCN_GET_MN_NODEID_MAP(ccn_plat_desc->periphbase),
MN_REGION_ID,
MN_DDC_SET_OFFSET,
MN_DDC_STAT_OFFSET);
}
void ccn_exit_snoop_dvm_domain(unsigned long long master_iface_map)
......@@ -375,17 +347,18 @@ void ccn_exit_snoop_dvm_domain(unsigned long long master_iface_map)
unsigned long long rn_id_map;
rn_id_map = ccn_master_to_rn_id_map(master_iface_map);
ccn_snoop_dvm_domain_common(rn_id_map,
HNF_SDC_CLR_OFFSET,
HNF_SDC_STAT_OFFSET,
MN_HNF_NODEID_OFFSET,
HNF_REGION_ID_START);
ccn_snoop_dvm_domain_common(rn_id_map,
MN_DDC_CLR_OFFSET,
MN_DDC_STAT_OFFSET,
MN_HNI_NODEID_OFFSET,
MN_REGION_ID);
ccn_snoop_dvm_do_op(rn_id_map,
CCN_GET_HN_NODEID_MAP(ccn_plat_desc->periphbase,
MN_HNF_NODEID_OFFSET),
HNF_REGION_ID_START,
HNF_SDC_CLR_OFFSET,
HNF_SDC_STAT_OFFSET);
ccn_snoop_dvm_do_op(rn_id_map,
CCN_GET_MN_NODEID_MAP(ccn_plat_desc->periphbase),
MN_REGION_ID,
MN_DDC_CLR_OFFSET,
MN_DDC_STAT_OFFSET);
}
void ccn_enter_dvm_domain(unsigned long long master_iface_map)
......@@ -393,11 +366,11 @@ void ccn_enter_dvm_domain(unsigned long long master_iface_map)
unsigned long long rn_id_map;
rn_id_map = ccn_master_to_rn_id_map(master_iface_map);
ccn_snoop_dvm_domain_common(rn_id_map,
MN_DDC_SET_OFF,
MN_DDC_STAT_OFFSET,
MN_HNI_NODEID_OFFSET,
MN_REGION_ID);
ccn_snoop_dvm_do_op(rn_id_map,
CCN_GET_MN_NODEID_MAP(ccn_plat_desc->periphbase),
MN_REGION_ID,
MN_DDC_SET_OFFSET,
MN_DDC_STAT_OFFSET);
}
void ccn_exit_dvm_domain(unsigned long long master_iface_map)
......@@ -405,11 +378,11 @@ void ccn_exit_dvm_domain(unsigned long long master_iface_map)
unsigned long long rn_id_map;
rn_id_map = ccn_master_to_rn_id_map(master_iface_map);
ccn_snoop_dvm_domain_common(rn_id_map,
MN_DDC_CLR_OFFSET,
MN_DDC_STAT_OFFSET,
MN_HNI_NODEID_OFFSET,
MN_REGION_ID);
ccn_snoop_dvm_do_op(rn_id_map,
CCN_GET_MN_NODEID_MAP(ccn_plat_desc->periphbase),
MN_REGION_ID,
MN_DDC_CLR_OFFSET,
MN_DDC_STAT_OFFSET);
}
/*******************************************************************************
......
drivers/arm/ccn/ccn_private.h
View file @ 85320724
......@@ -147,7 +147,7 @@ typedef enum rn_types {
#define MN_HNI_NODEID_OFFSET 0x01C0
#define MN_SN_NODEID_OFFSET 0x01D0
#define MN_DDC_STAT_OFFSET DOMAIN_CTRL_STAT_OFFSET
#define MN_DDC_SET_OFF DOMAIN_CTRL_SET_OFFSET
#define MN_DDC_SET_OFFSET DOMAIN_CTRL_SET_OFFSET
#define MN_DDC_CLR_OFFSET DOMAIN_CTRL_CLR_OFFSET
#define MN_ID_OFFSET REGION_ID_OFFSET
......@@ -236,4 +236,21 @@ static inline unsigned int count_set_bits(uint64_t bitmap)
*/
#define FOR_EACH_PRESENT_MASTER_INTERFACE(iface_id, bit_map) \
FOR_EACH_BIT(iface_id, bit_map)
/*
* Macro that returns the node id bit map for the Miscellaneous Node
*/
#define CCN_GET_MN_NODEID_MAP(periphbase) \
(1 << get_node_id(ccn_reg_read(periphbase, MN_REGION_ID, \
REGION_ID_OFFSET)))
/*
* This macro returns the bitmap of Home nodes on the basis of the
* 'mn_hn_id_reg_offset' parameter from the Miscellaneous node's (MN)
* programmer's view. The MN has a register which carries the bitmap of present
* Home nodes of each type i.e. HN-Fs, HN-Is & HN-Ds.
*/
#define CCN_GET_HN_NODEID_MAP(periphbase, mn_hn_id_reg_offset) \
ccn_reg_read(periphbase, MN_REGION_ID, mn_hn_id_reg_offset)
#endif /* __CCN_PRIVATE_H__ */
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