From 4fe75a8ccd8005f8d0322c5b85ebee6243b2e753 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?C=C3=A9dric=20Le=20Goater?= Date: Mon, 18 Jun 2018 19:34:00 +0200 Subject: spapr: split the IRQ allocation sequence MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Today, when a device requests for IRQ number in a sPAPR machine, the spapr_irq_alloc() routine first scans the ICSState status array to find an empty slot and then performs the assignement of the selected numbers. Split this sequence in two distinct routines : spapr_irq_find() for lookups and spapr_irq_claim() for claiming the IRQ numbers. This will ease the introduction of a static layout of IRQ numbers. Signed-off-by: Cédric Le Goater Signed-off-by: David Gibson --- hw/ppc/spapr_pci.c | 23 ++++++++++++++++++++--- 1 file changed, 20 insertions(+), 3 deletions(-) (limited to 'hw/ppc/spapr_pci.c') diff --git a/hw/ppc/spapr_pci.c b/hw/ppc/spapr_pci.c index f936ce63ef..497b896c7d 100644 --- a/hw/ppc/spapr_pci.c +++ b/hw/ppc/spapr_pci.c @@ -279,6 +279,7 @@ static void rtas_ibm_change_msi(PowerPCCPU *cpu, sPAPRMachineState *spapr, spapr_pci_msi *msi; int *config_addr_key; Error *err = NULL; + int i; /* Fins sPAPRPHBState */ phb = spapr_pci_find_phb(spapr, buid); @@ -371,8 +372,7 @@ static void rtas_ibm_change_msi(PowerPCCPU *cpu, sPAPRMachineState *spapr, } /* Allocate MSIs */ - irq = spapr_irq_alloc_block(spapr, req_num, false, - ret_intr_type == RTAS_TYPE_MSI, &err); + irq = spapr_irq_find(spapr, req_num, ret_intr_type == RTAS_TYPE_MSI, &err); if (err) { error_reportf_err(err, "Can't allocate MSIs for device %x: ", config_addr); @@ -380,6 +380,16 @@ static void rtas_ibm_change_msi(PowerPCCPU *cpu, sPAPRMachineState *spapr, return; } + for (i = 0; i < req_num; i++) { + spapr_irq_claim(spapr, irq + i, false, &err); + if (err) { + error_reportf_err(err, "Can't allocate MSIs for device %x: ", + config_addr); + rtas_st(rets, 0, RTAS_OUT_HW_ERROR); + return; + } + } + /* Release previous MSIs */ if (msi) { spapr_irq_free(spapr, msi->first_irq, msi->num); @@ -1698,7 +1708,14 @@ static void spapr_phb_realize(DeviceState *dev, Error **errp) uint32_t irq; Error *local_err = NULL; - irq = spapr_irq_alloc_block(spapr, 1, true, false, &local_err); + irq = spapr_irq_findone(spapr, &local_err); + if (local_err) { + error_propagate(errp, local_err); + error_prepend(errp, "can't allocate LSIs: "); + return; + } + + spapr_irq_claim(spapr, irq, true, &local_err); if (local_err) { error_propagate(errp, local_err); error_prepend(errp, "can't allocate LSIs: "); -- cgit v1.2.3