From: "Cédric Le Goater" <clg@kaod.org>
To: Haren Myneni <haren@linux.ibm.com>, mpe@ellerman.id.au
Cc: mikey@neuling.org, herbert@gondor.apana.org.au,
npiggin@gmail.com, hch@infradead.org, oohall@gmail.com,
sukadev@linux.vnet.ibm.com, linuxppc-dev@lists.ozlabs.org,
ajd@linux.ibm.com
Subject: Re: [PATCH v8 01/14] powerpc/xive: Define xive_native_alloc_irq_on_chip()
Date: Tue, 24 Mar 2020 14:48:32 +0100 [thread overview]
Message-ID: <802e7661-b575-5adf-b56f-4684d3f668f3@kaod.org> (raw)
In-Reply-To: <1584598352.9256.15242.camel@hbabu-laptop>
On 3/19/20 7:12 AM, Haren Myneni wrote:
>
> This function allocates IRQ on a specific chip. VAS needs per chip
> IRQ allocation and will have IRQ handler per VAS instance.
>
> Signed-off-by: Haren Myneni <haren@linux.ibm.com>
Reviewed-by: Cédric Le Goater <clg@kaod.org>
Thanks,
C.
> ---
> arch/powerpc/include/asm/xive.h | 9 ++++++++-
> arch/powerpc/sysdev/xive/native.c | 6 +++---
> 2 files changed, 11 insertions(+), 4 deletions(-)
>
> diff --git a/arch/powerpc/include/asm/xive.h b/arch/powerpc/include/asm/xive.h
> index 93f982db..d08ea11 100644
> --- a/arch/powerpc/include/asm/xive.h
> +++ b/arch/powerpc/include/asm/xive.h
> @@ -5,6 +5,8 @@
> #ifndef _ASM_POWERPC_XIVE_H
> #define _ASM_POWERPC_XIVE_H
>
> +#include <asm/opal-api.h>
> +
> #define XIVE_INVALID_VP 0xffffffff
>
> #ifdef CONFIG_PPC_XIVE
> @@ -108,7 +110,6 @@ struct xive_q {
> int xive_native_populate_irq_data(u32 hw_irq,
> struct xive_irq_data *data);
> void xive_cleanup_irq_data(struct xive_irq_data *xd);
> -u32 xive_native_alloc_irq(void);
> void xive_native_free_irq(u32 irq);
> int xive_native_configure_irq(u32 hw_irq, u32 target, u8 prio, u32 sw_irq);
>
> @@ -137,6 +138,12 @@ int xive_native_set_queue_state(u32 vp_id, uint32_t prio, u32 qtoggle,
> u32 qindex);
> int xive_native_get_vp_state(u32 vp_id, u64 *out_state);
> bool xive_native_has_queue_state_support(void);
> +extern u32 xive_native_alloc_irq_on_chip(u32 chip_id);
> +
> +static inline u32 xive_native_alloc_irq(void)
> +{
> + return xive_native_alloc_irq_on_chip(OPAL_XIVE_ANY_CHIP);
> +}
>
> #else
>
> diff --git a/arch/powerpc/sysdev/xive/native.c b/arch/powerpc/sysdev/xive/native.c
> index 0ff6b73..14d4406 100644
> --- a/arch/powerpc/sysdev/xive/native.c
> +++ b/arch/powerpc/sysdev/xive/native.c
> @@ -279,12 +279,12 @@ static int xive_native_get_ipi(unsigned int cpu, struct xive_cpu *xc)
> }
> #endif /* CONFIG_SMP */
>
> -u32 xive_native_alloc_irq(void)
> +u32 xive_native_alloc_irq_on_chip(u32 chip_id)
> {
> s64 rc;
>
> for (;;) {
> - rc = opal_xive_allocate_irq(OPAL_XIVE_ANY_CHIP);
> + rc = opal_xive_allocate_irq(chip_id);
> if (rc != OPAL_BUSY)
> break;
> msleep(OPAL_BUSY_DELAY_MS);
> @@ -293,7 +293,7 @@ u32 xive_native_alloc_irq(void)
> return 0;
> return rc;
> }
> -EXPORT_SYMBOL_GPL(xive_native_alloc_irq);
> +EXPORT_SYMBOL_GPL(xive_native_alloc_irq_on_chip);
>
> void xive_native_free_irq(u32 irq)
> {
>
next prev parent reply other threads:[~2020-03-24 14:32 UTC|newest]
Thread overview: 44+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-03-19 6:08 [PATCH v8 00/14] powerpc/vas: Page fault handling for user space NX requests Haren Myneni
2020-03-19 6:12 ` [PATCH v8 01/14] powerpc/xive: Define xive_native_alloc_irq_on_chip() Haren Myneni
2020-03-23 0:20 ` Nicholas Piggin
2020-03-23 8:32 ` Cédric Le Goater
2020-03-24 13:48 ` Cédric Le Goater [this message]
2020-03-19 6:13 ` [PATCH v8 02/14] powerpc/xive: Define xive_native_alloc_get_irq_info() Haren Myneni
2020-03-23 8:52 ` Cédric Le Goater
2020-03-24 13:51 ` Cédric Le Goater
2020-03-19 6:13 ` [PATCH v8 03/14] powerpc/vas: Define nx_fault_stamp in coprocessor_request_block Haren Myneni
2020-03-23 0:30 ` Nicholas Piggin
2020-03-23 0:57 ` Haren Myneni
2020-03-23 1:30 ` Nicholas Piggin
2020-03-23 11:32 ` Michael Ellerman
2020-03-23 18:13 ` Haren Myneni
2020-03-25 10:44 ` Michael Ellerman
2020-03-19 6:14 ` [PATCH v8 04/14] powerpc/vas: Alloc and setup IRQ and trigger port address Haren Myneni
2020-03-23 1:06 ` Nicholas Piggin
2020-03-23 9:06 ` Cédric Le Goater
2020-03-23 9:27 ` Cédric Le Goater
2020-03-23 19:02 ` Haren Myneni
2020-03-24 12:20 ` Cédric Le Goater
2020-03-24 2:26 ` Oliver O'Halloran
2020-03-24 13:27 ` Cédric Le Goater
2020-03-24 14:48 ` Cédric Le Goater
2020-03-24 21:06 ` Haren Myneni
2020-03-19 6:15 ` [PATCH v8 05/14] powerpc/vas: Setup fault window per VAS instance Haren Myneni
2020-03-19 6:15 ` [PATCH v8 06/14] powerpc/vas: Setup thread IRQ handler " Haren Myneni
2020-03-23 2:23 ` Nicholas Piggin
2020-03-25 2:58 ` Haren Myneni
2020-03-19 6:16 ` [PATCH v8 07/14] powerpc/vas: Register NX with fault window ID and IRQ port value Haren Myneni
2020-03-19 6:16 ` [PATCH v8 08/14] powerpc/vas: Take reference to PID and mm for user space windows Haren Myneni
2020-03-23 2:34 ` Nicholas Piggin
2020-03-19 6:17 ` [PATCH v8 09/14] powerpc/vas: Update CSB and notify process for fault CRBs Haren Myneni
2020-03-23 2:37 ` Nicholas Piggin
2020-03-19 6:18 ` [PATCH v8 10/14] powerpc/vas: Print CRB and FIFO values Haren Myneni
2020-03-19 6:18 ` [PATCH v8 11/14] powerpc/vas: Do not use default credits for receive window Haren Myneni
2020-03-23 2:40 ` Nicholas Piggin
2020-03-25 3:04 ` Haren Myneni
2020-03-19 6:19 ` [PATCH v8 12/14] powerpc/vas: Return credits after handling fault Haren Myneni
2020-03-23 2:44 ` Nicholas Piggin
2020-03-25 3:35 ` Haren Myneni
2020-03-19 6:19 ` [PATCH v8 13/14] powerpc/vas: Display process stuck message Haren Myneni
2020-03-19 6:20 ` [PATCH v8 14/14] powerpc/vas: Free send window in VAS instance after credits returned Haren Myneni
2020-03-23 8:59 ` [PATCH v8 00/14] powerpc/vas: Page fault handling for user space NX requests Cédric Le Goater
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