From: Alexey Kardashevskiy <aik@ozlabs.ru> To: "qemu-devel@nongnu.org" <qemu-devel@nongnu.org>, kvm-ppc@vger.kernel.org Subject: [Qemu-devel] [PATCH 2/3] pseries: added allocator for a block of IRQs Date: Thu, 14 Jun 2012 14:33:13 +1000 [thread overview] Message-ID: <4FD96989.4090600@ozlabs.ru> (raw) In-Reply-To: <4FD968BB.2000505@ozlabs.ru> The patch adds a simple helper which allocates a consecutive sequence of IRQs calling spapr_allocate_irq for each and checks that allocated IRQs go consequently. The patch is required for upcoming support of MSI/MSIX on POWER. Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru> --- hw/spapr.c | 19 +++++++++++++++++++ hw/spapr.h | 1 + 2 files changed, 20 insertions(+), 0 deletions(-) diff --git a/hw/spapr.c b/hw/spapr.c index 2e0b4b8..ef6ffcb 100644 --- a/hw/spapr.c +++ b/hw/spapr.c @@ -113,6 +113,25 @@ qemu_irq spapr_allocate_irq(uint32_t hint, uint32_t *irq_num, return qirq; } +/* Allocate block of consequtive IRQs, returns a number of the first */ +int spapr_allocate_irq_block(uint32_t num, enum xics_irq_type type) +{ + int i, ret; + uint32_t irq = -1; + + for (i = 0; i < num; ++i) { + if (!spapr_allocate_irq(0, &irq, type)) { + return -1; + } + if (0 == i) { + ret = irq; + } else if (ret + i != irq) { + return -1; + } + } + return ret; +} + static int spapr_set_associativity(void *fdt, sPAPREnvironment *spapr) { int ret = 0, offset; diff --git a/hw/spapr.h b/hw/spapr.h index 502393a..408b470 100644 --- a/hw/spapr.h +++ b/hw/spapr.h @@ -289,6 +289,7 @@ target_ulong spapr_hypercall(CPUPPCState *env, target_ulong opcode, qemu_irq spapr_allocate_irq(uint32_t hint, uint32_t *irq_num, enum xics_irq_type type); +int spapr_allocate_irq_block(uint32_t num, enum xics_irq_type type); static inline qemu_irq spapr_allocate_msi(uint32_t hint, uint32_t *irq_num) { -- 1.7.7.3
WARNING: multiple messages have this Message-ID (diff)
From: Alexey Kardashevskiy <aik@ozlabs.ru> To: "qemu-devel@nongnu.org" <qemu-devel@nongnu.org>, kvm-ppc@vger.kernel.org Subject: [PATCH 2/3] pseries: added allocator for a block of IRQs Date: Thu, 14 Jun 2012 04:33:13 +0000 [thread overview] Message-ID: <4FD96989.4090600@ozlabs.ru> (raw) In-Reply-To: <4FD968BB.2000505@ozlabs.ru> The patch adds a simple helper which allocates a consecutive sequence of IRQs calling spapr_allocate_irq for each and checks that allocated IRQs go consequently. The patch is required for upcoming support of MSI/MSIX on POWER. Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru> --- hw/spapr.c | 19 +++++++++++++++++++ hw/spapr.h | 1 + 2 files changed, 20 insertions(+), 0 deletions(-) diff --git a/hw/spapr.c b/hw/spapr.c index 2e0b4b8..ef6ffcb 100644 --- a/hw/spapr.c +++ b/hw/spapr.c @@ -113,6 +113,25 @@ qemu_irq spapr_allocate_irq(uint32_t hint, uint32_t *irq_num, return qirq; } +/* Allocate block of consequtive IRQs, returns a number of the first */ +int spapr_allocate_irq_block(uint32_t num, enum xics_irq_type type) +{ + int i, ret; + uint32_t irq = -1; + + for (i = 0; i < num; ++i) { + if (!spapr_allocate_irq(0, &irq, type)) { + return -1; + } + if (0 = i) { + ret = irq; + } else if (ret + i != irq) { + return -1; + } + } + return ret; +} + static int spapr_set_associativity(void *fdt, sPAPREnvironment *spapr) { int ret = 0, offset; diff --git a/hw/spapr.h b/hw/spapr.h index 502393a..408b470 100644 --- a/hw/spapr.h +++ b/hw/spapr.h @@ -289,6 +289,7 @@ target_ulong spapr_hypercall(CPUPPCState *env, target_ulong opcode, qemu_irq spapr_allocate_irq(uint32_t hint, uint32_t *irq_num, enum xics_irq_type type); +int spapr_allocate_irq_block(uint32_t num, enum xics_irq_type type); static inline qemu_irq spapr_allocate_msi(uint32_t hint, uint32_t *irq_num) { -- 1.7.7.3
next prev parent reply other threads:[~2012-06-14 4:33 UTC|newest] Thread overview: 79+ messages / expand[flat|nested] mbox.gz Atom feed top 2012-06-14 4:29 [Qemu-devel] [PATCH 0/3] adding MSI/MSIX for PCI on POWER Alexey Kardashevskiy 2012-06-14 4:29 ` Alexey Kardashevskiy 2012-06-14 4:31 ` [Qemu-devel] [PATCH 1/3] msi/msix: added functions to API to set up message address and data Alexey Kardashevskiy 2012-06-14 4:31 ` Alexey Kardashevskiy 2012-06-14 4:56 ` [Qemu-devel] " Alex Williamson 2012-06-14 4:56 ` Alex Williamson 2012-06-14 5:17 ` Alexey Kardashevskiy 2012-06-14 5:17 ` Alexey Kardashevskiy 2012-06-14 5:38 ` Alex Williamson 2012-06-14 5:38 ` Alex Williamson 2012-06-14 5:44 ` Alexey Kardashevskiy 2012-06-14 5:44 ` Alexey Kardashevskiy 2012-06-14 18:37 ` Alex Williamson 2012-06-14 18:37 ` Alex Williamson 2012-06-14 5:45 ` Jan Kiszka 2012-06-14 5:45 ` Jan Kiszka 2012-06-21 6:46 ` [Qemu-devel] [PATCH] msi/msix: added functions to API to set up message address, " Alexey Kardashevskiy 2012-06-21 6:46 ` Alexey Kardashevskiy 2012-06-21 6:53 ` [Qemu-devel] " Jan Kiszka 2012-06-21 6:53 ` Jan Kiszka 2012-06-21 7:18 ` [Qemu-devel] [PATCH] msi/msix: added public API to set/get MSI " Alexey Kardashevskiy 2012-06-21 7:18 ` Alexey Kardashevskiy 2012-06-21 7:39 ` [Qemu-devel] " Jan Kiszka 2012-06-21 7:39 ` Jan Kiszka 2012-06-21 10:28 ` [Qemu-devel] " Alexey Kardashevskiy 2012-06-21 10:28 ` Alexey Kardashevskiy 2012-06-21 10:38 ` [Qemu-devel] " Jan Kiszka 2012-06-21 10:38 ` Jan Kiszka 2012-06-21 10:50 ` [Qemu-devel] " Alexey Kardashevskiy 2012-06-21 10:50 ` Alexey Kardashevskiy 2012-06-21 10:56 ` [Qemu-devel] " Jan Kiszka 2012-06-21 10:56 ` Jan Kiszka 2012-06-21 11:39 ` [Qemu-devel] [PATCH] msi/msix: added API to set MSI message address " Alexey Kardashevskiy 2012-06-21 11:39 ` Alexey Kardashevskiy 2012-06-21 11:49 ` [Qemu-devel] " Jan Kiszka 2012-06-21 11:49 ` Jan Kiszka 2012-06-22 1:03 ` [Qemu-devel] " Alexey Kardashevskiy 2012-06-22 1:03 ` Alexey Kardashevskiy 2012-06-22 1:15 ` [Qemu-devel] " Alexey Kardashevskiy 2012-06-22 1:15 ` Alexey Kardashevskiy 2012-07-02 4:28 ` [Qemu-devel] " Alexey Kardashevskiy 2012-07-02 4:28 ` Alexey Kardashevskiy 2012-07-02 7:24 ` [Qemu-devel] " Jan Kiszka 2012-07-02 7:24 ` Jan Kiszka 2012-07-06 15:36 ` [Qemu-devel] " Alexander Graf 2012-07-06 15:36 ` Alexander Graf 2012-07-06 15:58 ` [Qemu-devel] " Jan Kiszka 2012-07-06 15:58 ` Jan Kiszka 2012-07-11 18:22 ` [Qemu-devel] " Alexander Graf 2012-07-11 18:22 ` Alexander Graf 2012-07-18 12:43 ` [Qemu-devel] " Michael S. Tsirkin 2012-07-18 12:43 ` Michael S. Tsirkin 2012-07-18 13:17 ` [Qemu-devel] " Alexey Kardashevskiy 2012-07-18 13:17 ` Alexey Kardashevskiy 2012-07-18 15:23 ` [Qemu-devel] " Michael S. Tsirkin 2012-07-18 15:23 ` Michael S. Tsirkin 2012-07-19 0:32 ` [Qemu-devel] " Alexey Kardashevskiy 2012-07-19 0:32 ` Alexey Kardashevskiy 2012-07-19 9:27 ` [Qemu-devel] " Michael S. Tsirkin 2012-07-19 9:27 ` Michael S. Tsirkin 2012-07-19 14:24 ` [Qemu-devel] " Alexey Kardashevskiy 2012-07-19 14:43 ` Michael S. Tsirkin 2012-07-19 14:50 ` Alexey Kardashevskiy 2012-07-19 14:56 ` Michael S. Tsirkin 2012-07-19 0:35 ` Alexey Kardashevskiy 2012-07-19 9:27 ` Michael S. Tsirkin 2012-06-21 15:44 ` [Qemu-devel] [PATCH] msi/msix: added public API to set/get MSI message address, " Alex Williamson 2012-06-21 15:44 ` Alex Williamson 2012-06-14 4:33 ` Alexey Kardashevskiy [this message] 2012-06-14 4:33 ` [PATCH 2/3] pseries: added allocator for a block of IRQs Alexey Kardashevskiy 2012-06-27 14:47 ` Alexander Graf 2012-06-14 4:34 ` [Qemu-devel] [PATCH 3/3] pseries pci: added MSI/MSIX support Alexey Kardashevskiy 2012-06-14 4:34 ` Alexey Kardashevskiy 2012-06-27 18:15 ` Alexander Graf 2012-06-14 4:42 ` [Qemu-devel] [PATCH 0/3] adding MSI/MSIX for PCI on POWER Alexey Kardashevskiy 2012-06-14 4:42 ` Alexey Kardashevskiy 2012-06-27 14:43 ` Alexander Graf 2012-06-27 21:32 ` Benjamin Herrenschmidt 2012-06-27 21:34 ` Alexander Graf
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