From: Valentine Barshak <vbarshak@ru•mvista.com>
To: linuxppc-dev@ozlabs•org
Subject: [PATCH] PowerPC 4xx: Add dcri_clrset() for locked read/modify/write functionality
Date: Wed, 5 Mar 2008 21:38:04 +0300 [thread overview]
Message-ID: <20080305183804.GA21760@ru.mvista.com> (raw)
In-Reply-To: <47CEDC6F.6060205@ru.mvista.com>
This adds dcri_clrset() macro which does read/modify/write
on indirect dcr registers while holding indirect dcr lock.
Signed-off-by: Valentine Barshak <vbarshak@ru•mvista.com>
---
include/asm-powerpc/dcr-native.h | 17 +++++++++++++++++
1 files changed, 17 insertions(+)
--- linux-2.6.orig/include/asm-powerpc/dcr-native.h 2008-03-05 17:32:31.000000000 +0300
+++ linux-2.6/include/asm-powerpc/dcr-native.h 2008-03-05 17:53:16.000000000 +0300
@@ -82,6 +82,19 @@ static inline void __mtdcri(int base_add
spin_unlock_irqrestore(&dcr_ind_lock, flags);
}
+static inline void __dcri_clrset(int base_addr, int base_data, int reg,
+ unsigned clr, unsigned set)
+{
+ unsigned long flags;
+ unsigned int val;
+
+ spin_lock_irqsave(&dcr_ind_lock, flags);
+ __mtdcr(base_addr, reg);
+ val = (__mfdcr(base_data) & ~clr) | set;
+ __mtdcr(base_data, val);
+ spin_unlock_irqrestore(&dcr_ind_lock, flags);
+}
+
#define mfdcri(base, reg) __mfdcri(DCRN_ ## base ## _CONFIG_ADDR, \
DCRN_ ## base ## _CONFIG_DATA, \
reg)
@@ -90,6 +103,10 @@ static inline void __mtdcri(int base_add
DCRN_ ## base ## _CONFIG_DATA, \
reg, data)
+#define dcri_clrset(base, reg, clr, set) __dcri_clrset(DCRN_ ## base ## _CONFIG_ADDR, \
+ DCRN_ ## base ## _CONFIG_DATA, \
+ reg, clr, set)
+
#endif /* __ASSEMBLY__ */
#endif /* __KERNEL__ */
#endif /* _ASM_POWERPC_DCR_NATIVE_H */
next prev parent reply other threads:[~2008-03-05 18:42 UTC|newest]
Thread overview: 39+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-02-21 14:46 [RFC][PATCH] PowerPC 4xx: ibm_newemac 440GX phy clock workaround Valentine Barshak
2008-02-21 22:52 ` Benjamin Herrenschmidt
2008-02-22 19:15 ` Valentine Barshak
2008-02-22 20:51 ` Josh Boyer
2008-02-22 19:24 ` [RFC][PATCH] ibm_newemac: PowerPC 440GX EMAC PHY " Valentine Barshak
2008-02-22 19:28 ` [RFC][PATCH] ibm_newemac: PowerPC 440EP/440GR " Valentine Barshak
2008-02-22 20:49 ` Josh Boyer
2008-02-26 12:25 ` Valentine Barshak
2008-02-26 14:10 ` Steven A. Falco
2008-02-26 15:02 ` Josh Boyer
2008-02-28 7:54 ` Benjamin Herrenschmidt
2008-03-05 17:46 ` Valentine Barshak
2008-03-05 18:38 ` Valentine Barshak [this message]
2008-03-06 0:06 ` [PATCH] PowerPC 4xx: Add dcri_clrset() for locked read/modify/write functionality Benjamin Herrenschmidt
2008-03-06 1:12 ` Josh Boyer
2008-03-06 11:31 ` Valentine Barshak
2008-03-06 11:50 ` Benjamin Herrenschmidt
2008-03-06 13:37 ` [PATCH] PowerPC 4xx: Use dcri_clrset() for PCIe indirect dcr read/modify/write access Valentine Barshak
2008-03-06 14:08 ` Valentine Barshak
2008-03-06 14:34 ` Valentine Barshak
2008-03-06 13:41 ` [PATCH 1/2] ibm_newemac: PowerPC 440GX EMAC PHY clock workaround Valentine Barshak
2008-03-24 23:21 ` Benjamin Herrenschmidt
2008-03-26 12:36 ` Josh Boyer
2008-03-06 13:43 ` [PATCH 2/2] ibm_newemac: PowerPC 440EP/440GR " Valentine Barshak
2008-03-24 23:22 ` Benjamin Herrenschmidt
2008-03-26 12:35 ` Josh Boyer
2008-03-27 13:50 ` Valentine Barshak
2008-03-27 13:53 ` Josh Boyer
2008-03-27 14:40 ` [PATCH 1/2] ibm_newemac: PowerPC 440GX " Valentine Barshak
2008-03-29 2:18 ` Jeff Garzik
2008-03-29 3:28 ` Benjamin Herrenschmidt
2008-03-29 3:30 ` Josh Boyer
2008-04-11 14:24 ` Josh Boyer
2008-04-12 20:28 ` Jeff Garzik
2008-04-12 20:47 ` Josh Boyer
2008-04-12 21:13 ` Jeff Garzik
2008-03-27 14:42 ` [PATCH 2/2] ibm_newemac: PowerPC 440EP/440GR " Valentine Barshak
2008-03-27 14:43 ` [PATCH] ibm_newemac: emac_tx_csum typo fix Valentine Barshak
2008-03-29 1:54 ` Jeff Garzik
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