linux.git/arch/powerpc/sysdev/mpic.c, branch v2.6.22-rc4 Clone of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git [POWERPC] Remove warning in mpic.c 2007-05-17T11:11:14+00:00 Olof Johansson olof@lixom.net 2007-05-14T20:59:12+00:00 d16f1b648356d70ebbda2eb1b2af18a6816dacb1 arch/powerpc/sysdev/mpic.c: In function 'mpic_request_ipis': arch/powerpc/sysdev/mpic.c:1445: warning: ignoring return value of 'request_irq', declared with attribute warn_unused_result Signed-off-by: Olof Johansson <olof@lixom.net> Signed-off-by: Paul Mackerras <paulus@samba.org> 
arch/powerpc/sysdev/mpic.c: In function 'mpic_request_ipis':
arch/powerpc/sysdev/mpic.c:1445: warning: ignoring return value of 'request_irq', declared with attribute warn_unused_result

Signed-off-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Paul Mackerras <paulus@samba.org>
[POWERPC] MPIC U3/U4 MSI backend 2007-05-08T03:46:48+00:00 Michael Ellerman michael@ellerman.id.au 2007-05-08T02:58:37+00:00 05af7bd2d75e5098021864d83fbb831111755fa0 MPIC U3/U4 MSI backend. Based on code from Segher, heavily hacked by me. This only deals with MSI on U3/U4 MPICs, aka. CPC 9x5. If we find a U3/U4 then we enable this backend, ie. take over the ppc_md MSI hooks. We might need more elaborate logic in future to decide which backend is enabled. We need our own irq_chip so that we can do MSI masking/unmasking on the device itself. We also need to mask explicitly on shutdown to make sure we don't get bitten by lazy-disable semantics. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Paul Mackerras <paulus@samba.org> 
MPIC U3/U4 MSI backend. Based on code from Segher, heavily hacked by me.
This only deals with MSI on U3/U4 MPICs, aka. CPC 9x5.

If we find a U3/U4 then we enable this backend, ie. take over the ppc_md
MSI hooks. We might need more elaborate logic in future to decide which
backend is enabled.

We need our own irq_chip so that we can do MSI masking/unmasking on
the device itself. We also need to mask explicitly on shutdown to make
sure we don't get bitten by lazy-disable semantics.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
[POWERPC] MPIC MSI allocator 2007-05-08T03:43:48+00:00 Michael Ellerman michael@ellerman.id.au 2007-05-08T02:58:36+00:00 a7de7c74227edda719b257eb15aecd73790ff894 To support MSI on MPIC we need a way to reserve and allocate hardware irq numbers, this patch implements an allocator for that purpose. New firmware platforms must define a "msi-available-ranges" property on their MPIC node for MSI to work. For U3/U4 we do a best-guess setup. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Paul Mackerras <paulus@samba.org> 
To support MSI on MPIC we need a way to reserve and allocate hardware irq
numbers, this patch implements an allocator for that purpose.

New firmware platforms must define a "msi-available-ranges" property on their
MPIC node for MSI to work. For U3/U4 we do a best-guess setup.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
[POWERPC] Enable MSI mappings for MPIC 2007-05-08T03:42:27+00:00 Michael Ellerman michael@ellerman.id.au 2007-05-08T02:58:36+00:00 812fd1fd63caf2d72906603ebb9c6049a19ef4d2 On some Apple machines the HT MSI mappings are not enabled by firmware, so we need to do it by hand. We can't use the pci routines as this code runs too early. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Paul Mackerras <paulus@samba.org> 
On some Apple machines the HT MSI mappings are not enabled by firmware, so
we need to do it by hand.

We can't use the pci routines as this code runs too early.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
[POWERPC] MPIC sys_device & suspend/resume 2007-05-07T10:31:13+00:00 Johannes Berg johannes@sipsolutions.net 2007-05-02T06:33:41+00:00 3669e930481d6dd510718279cd4bacb15ca3ae91 This adds mpic to the system devices and implements suspend and resume for them. This is necessary to get interrupts for modules back to where they were before a suspend to disk. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org> 
This adds mpic to the system devices and implements suspend
and resume for them.  This is necessary to get interrupts for
modules back to where they were before a suspend to disk.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
[POWERPC] Fix spurious vectors on weird MPIC 2007-05-02T10:04:30+00:00 Josh Boyer jwboyer@linux.vnet.ibm.com 2007-04-30T20:38:11+00:00 5cddd2e355d0df400782dae80722945c8197b1c5 The weird TSI 10x MPIC needs an EOI after getting a spurious vector. This patch uses the existing MPIC_SPV_EOI flag to fix this issue. Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org> 
The weird TSI 10x MPIC needs an EOI after getting a spurious vector.  This
patch uses the existing MPIC_SPV_EOI flag to fix this issue.

Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
[POWERPC] Rename MPIC_BROKEN_U3 to MPIC_U3_HT_IRQS 2007-04-24T12:06:58+00:00 Michael Ellerman michael@ellerman.id.au 2007-04-23T08:47:08+00:00 6cfef5b27e49e826125f12637ee0d7210a896044 Rename MPIC_BROKEN_U3 to something a little more descriptive. Its effect is to enable support for HT irqs behind the PCI-X/HT bridge on U3/U4 (aka. CPC9x5) parts. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Paul Mackerras <paulus@samba.org> 
Rename MPIC_BROKEN_U3 to something a little more descriptive. Its
effect is to enable support for HT irqs behind the PCI-X/HT bridge on
U3/U4 (aka. CPC9x5) parts.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
[POWERPC] Rename get_property to of_get_property: arch/powerpc 2007-04-12T17:55:19+00:00 Stephen Rothwell sfr@canb.auug.org.au 2007-04-03T12:26:41+00:00 e2eb63927bfcb54232163bfec32440246fd44457 Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org> 
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
[POWERPC] mpic: set IPIs to be per-CPU 2007-02-16T03:00:19+00:00 Johannes Berg johannes@sipsolutions.net 2007-02-12T15:20:18+00:00 087d7ecd5273b480d13f4309a159842700afe276 This patch changes the MPIC IPIs to be per-CPU to avoid getting a warning ("Cannot set affinity for irq 251") when taking a CPU offline via sysfs or during suspend. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: Paul Mackerras <paulus@samba.org> 
This patch changes the MPIC IPIs to be per-CPU to avoid getting a
warning ("Cannot set affinity for irq 251") when taking a CPU
offline via sysfs or during suspend.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: Paul Mackerras <paulus@samba.org>
[POWERPC] Move MPIC smp routines into mpic.c 2007-02-14T00:50:04+00:00 Michael Ellerman michael@ellerman.id.au 2007-02-08T07:34:04+00:00 775aeff44774c6933d8f9c14e1f325d8acd03136 Move a couple of MPIC smp routines into mpic.c, they're inside an SMP block in mpic.c - so they're still only built for SMP. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Paul Mackerras <paulus@samba.org> 
Move a couple of MPIC smp routines into mpic.c, they're inside an SMP
block in mpic.c - so they're still only built for SMP.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>