mirrors/qemu
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity
c318bef762
qemu/include/hw/intc/ibex_plic.h

68 lines
1.5 KiB
C
Raw Normal View History

hw/intc: Initial commit of lowRISC Ibex PLIC The Ibex core contains a PLIC that although similar to the RISC-V spec is not RISC-V spec compliant. This patch implements a Ibex PLIC in a somewhat generic way. As the current RISC-V PLIC needs tidying up, my hope is that as the Ibex PLIC move towards spec compliance this PLIC implementation can be updated until it can replace the current PLIC. Signed-off-by: Alistair Francis <alistair.francis@wdc.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
2020-04-24 04:34:15 +03:00
/*
* QEMU RISC-V lowRISC Ibex PLIC
*
* Copyright (c) 2020 Western Digital
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2 or later, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License along with
* this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef HW_IBEX_PLIC_H
#define HW_IBEX_PLIC_H
#include "hw/sysbus.h"
Move QOM typedefs and add missing includes Some typedefs and macros are defined after the type check macros. This makes it difficult to automatically replace their definitions with OBJECT_DECLARE_TYPE. Patch generated using: $ ./scripts/codeconverter/converter.py -i \ --pattern=QOMStructTypedefSplit $(git grep -l '' -- '*.[ch]') which will split "typdef struct { ... } TypedefName" declarations. Followed by: $ ./scripts/codeconverter/converter.py -i --pattern=MoveSymbols \ $(git grep -l '' -- '*.[ch]') which will: - move the typedefs and #defines above the type check macros - add missing #include "qom/object.h" lines if necessary Reviewed-by: Daniel P. Berrangé <berrange@redhat.com> Reviewed-by: Juan Quintela <quintela@redhat.com> Message-Id: <20200831210740.126168-9-ehabkost@redhat.com> Reviewed-by: Juan Quintela <quintela@redhat.com> Message-Id: <20200831210740.126168-10-ehabkost@redhat.com> Message-Id: <20200831210740.126168-11-ehabkost@redhat.com> Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
2020-09-03 23:43:22 +03:00
#include "qom/object.h"
hw/intc: Initial commit of lowRISC Ibex PLIC The Ibex core contains a PLIC that although similar to the RISC-V spec is not RISC-V spec compliant. This patch implements a Ibex PLIC in a somewhat generic way. As the current RISC-V PLIC needs tidying up, my hope is that as the Ibex PLIC move towards spec compliance this PLIC implementation can be updated until it can replace the current PLIC. Signed-off-by: Alistair Francis <alistair.francis@wdc.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
2020-04-24 04:34:15 +03:00
#define TYPE_IBEX_PLIC "ibex-plic"
Use OBJECT_DECLARE_SIMPLE_TYPE when possible This converts existing DECLARE_INSTANCE_CHECKER usage to OBJECT_DECLARE_SIMPLE_TYPE when possible. $ ./scripts/codeconverter/converter.py -i \ --pattern=AddObjectDeclareSimpleType $(git grep -l '' -- '*.[ch]') Signed-off-by: Eduardo Habkost <ehabkost@redhat.com> Acked-by: Paul Durrant <paul@xen.org> Message-Id: <20200916182519.415636-6-ehabkost@redhat.com> Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
2020-09-16 21:25:19 +03:00
OBJECT_DECLARE_SIMPLE_TYPE(IbexPlicState, IBEX_PLIC)
hw/intc: Initial commit of lowRISC Ibex PLIC The Ibex core contains a PLIC that although similar to the RISC-V spec is not RISC-V spec compliant. This patch implements a Ibex PLIC in a somewhat generic way. As the current RISC-V PLIC needs tidying up, my hope is that as the Ibex PLIC move towards spec compliance this PLIC implementation can be updated until it can replace the current PLIC. Signed-off-by: Alistair Francis <alistair.francis@wdc.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
2020-04-24 04:34:15 +03:00
Move QOM typedefs and add missing includes Some typedefs and macros are defined after the type check macros. This makes it difficult to automatically replace their definitions with OBJECT_DECLARE_TYPE. Patch generated using: $ ./scripts/codeconverter/converter.py -i \ --pattern=QOMStructTypedefSplit $(git grep -l '' -- '*.[ch]') which will split "typdef struct { ... } TypedefName" declarations. Followed by: $ ./scripts/codeconverter/converter.py -i --pattern=MoveSymbols \ $(git grep -l '' -- '*.[ch]') which will: - move the typedefs and #defines above the type check macros - add missing #include "qom/object.h" lines if necessary Reviewed-by: Daniel P. Berrangé <berrange@redhat.com> Reviewed-by: Juan Quintela <quintela@redhat.com> Message-Id: <20200831210740.126168-9-ehabkost@redhat.com> Reviewed-by: Juan Quintela <quintela@redhat.com> Message-Id: <20200831210740.126168-10-ehabkost@redhat.com> Message-Id: <20200831210740.126168-11-ehabkost@redhat.com> Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
2020-09-03 23:43:22 +03:00
struct IbexPlicState {
hw/intc: Initial commit of lowRISC Ibex PLIC The Ibex core contains a PLIC that although similar to the RISC-V spec is not RISC-V spec compliant. This patch implements a Ibex PLIC in a somewhat generic way. As the current RISC-V PLIC needs tidying up, my hope is that as the Ibex PLIC move towards spec compliance this PLIC implementation can be updated until it can replace the current PLIC. Signed-off-by: Alistair Francis <alistair.francis@wdc.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
2020-04-24 04:34:15 +03:00
/*< private >*/
SysBusDevice parent_obj;
/*< public >*/
MemoryRegion mmio;
uint32_t *pending;
intc/ibex_plic: Ensure we don't loose interrupts If an interrupt occurs between when we claim and complete an interrupt we currently drop the interrupt in ibex_plic_irqs_set_pending(). This somewhat matches hardware that also ignore the interrupt between the claim and complete process. In the case of hardware though the physical interrupt line will still be asserted after we have completed the interrupt. This means we will still act on the interrupt after the complete process. In QEMU we don't and instead we drop the interrupt as it is never recorded. This patch changed the behaviour of the Ibex PLIC so that we save all interrupts that occur while we are between claiming and completing an interrupt so that we can act on them after the completition process. This fixes interrupts being dropped when running Tock on OpenTitain in QEMU. Signed-off-by: Alistair Francis <alistair.francis@wdc.com> Message-id: e7bcf98c6925b1e6e7828e7c3f85293a09a65b12.1605136387.git.alistair.francis@wdc.com
2020-11-12 02:13:24 +03:00
uint32_t *hidden_pending;
hw/intc: ibex_plic: Don't allow repeat interrupts on claimed lines Once an interrupt has been claimed, but before it has been compelted we shouldn't receive any more pending interrupts. This patche keeps track of this to ensure that we don't see any more interrupts until it is completed. Signed-off-by: Alistair Francis <alistair.francis@wdc.com> Message-Id: <394c3f070615ff2b4fab61a1cf9cb48c122913b7.1595655188.git.alistair.francis@wdc.com>
2020-07-25 08:34:43 +03:00
uint32_t *claimed;
hw/intc: Initial commit of lowRISC Ibex PLIC The Ibex core contains a PLIC that although similar to the RISC-V spec is not RISC-V spec compliant. This patch implements a Ibex PLIC in a somewhat generic way. As the current RISC-V PLIC needs tidying up, my hope is that as the Ibex PLIC move towards spec compliance this PLIC implementation can be updated until it can replace the current PLIC. Signed-off-by: Alistair Francis <alistair.francis@wdc.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
2020-04-24 04:34:15 +03:00
uint32_t *source;
uint32_t *priority;
uint32_t *enable;
uint32_t threshold;
uint32_t claim;
/* config */
uint32_t num_cpus;
uint32_t num_sources;
uint32_t pending_base;
uint32_t pending_num;
uint32_t source_base;
uint32_t source_num;
uint32_t priority_base;
uint32_t priority_num;
uint32_t enable_base;
uint32_t enable_num;
uint32_t threshold_base;
uint32_t claim_base;
hw/intc: ibex_plic: Convert the PLIC to use RISC-V CPU GPIO lines Instead of using riscv_cpu_update_mip() let's instead use the new RISC-V CPU GPIO lines to set the external MIP bits. Signed-off-by: Alistair Francis <alistair.francis@wdc.com> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 0a76946981852f5bd15f0c37ab35b253371027a8.1630301632.git.alistair.francis@wdc.com
2021-08-30 08:34:49 +03:00
qemu_irq *external_irqs;
Move QOM typedefs and add missing includes Some typedefs and macros are defined after the type check macros. This makes it difficult to automatically replace their definitions with OBJECT_DECLARE_TYPE. Patch generated using: $ ./scripts/codeconverter/converter.py -i \ --pattern=QOMStructTypedefSplit $(git grep -l '' -- '*.[ch]') which will split "typdef struct { ... } TypedefName" declarations. Followed by: $ ./scripts/codeconverter/converter.py -i --pattern=MoveSymbols \ $(git grep -l '' -- '*.[ch]') which will: - move the typedefs and #defines above the type check macros - add missing #include "qom/object.h" lines if necessary Reviewed-by: Daniel P. Berrangé <berrange@redhat.com> Reviewed-by: Juan Quintela <quintela@redhat.com> Message-Id: <20200831210740.126168-9-ehabkost@redhat.com> Reviewed-by: Juan Quintela <quintela@redhat.com> Message-Id: <20200831210740.126168-10-ehabkost@redhat.com> Message-Id: <20200831210740.126168-11-ehabkost@redhat.com> Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
2020-09-03 23:43:22 +03:00
};
hw/intc: Initial commit of lowRISC Ibex PLIC The Ibex core contains a PLIC that although similar to the RISC-V spec is not RISC-V spec compliant. This patch implements a Ibex PLIC in a somewhat generic way. As the current RISC-V PLIC needs tidying up, my hope is that as the Ibex PLIC move towards spec compliance this PLIC implementation can be updated until it can replace the current PLIC. Signed-off-by: Alistair Francis <alistair.francis@wdc.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
2020-04-24 04:34:15 +03:00
#endif /* HW_IBEX_PLIC_H */
Reference in New Issue Copy Permalink