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iwlwifi: update nmi register

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In the 8000 HW family the register for forcing an NMI has
changed, so this allows to still be able to force an NMI
while taking into account the HW in order to write to the
correct register.

Signed-off-by: Liad Kaufman <liad.kaufman@intel.com>
Reviewed-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
This commit is contained in:
Liad Kaufman
2014-04-27 16:46:09 +03:00
committed by Emmanuel Grumbach
parent cf52023ccd
commit 4c9706dc2f
5 changed files with 26 additions and 5 deletions
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18
drivers/net/wireless/iwlwifi/iwl-io.c
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@@ -33,6 +33,7 @@
#include "iwl-io.h"
#include "iwl-csr.h"
#include "iwl-debug.h"
#include "iwl-prph.h"
#include "iwl-fh.h"
#define IWL_POLL_INTERVAL 10 /* microseconds */
@@ -183,6 +184,23 @@ void iwl_clear_bits_prph(struct iwl_trans *trans, u32 ofs, u32 mask)
}
IWL_EXPORT_SYMBOL(iwl_clear_bits_prph);
void iwl_force_nmi(struct iwl_trans *trans)
{
/*
* In HW previous to the 8000 HW family, and in the 8000 HW family
* itself when the revision step==0, the DEVICE_SET_NMI_REG is used
* to force an NMI. Otherwise, a different register -
* DEVICE_SET_NMI_8000B_REG - is used.
*/
if ((trans->cfg->device_family != IWL_DEVICE_FAMILY_8000) ||
((trans->hw_rev & 0xc) == 0x0))
iwl_write_prph(trans, DEVICE_SET_NMI_REG, DEVICE_SET_NMI_VAL);
else
iwl_write_prph(trans, DEVICE_SET_NMI_8000B_REG,
DEVICE_SET_NMI_8000B_VAL);
}
IWL_EXPORT_SYMBOL(iwl_force_nmi);
static const char *get_fh_string(int cmd)
{
#define IWL_CMD(x) case x: return #x