From: Andre Przywara <andre.przywara@arm.com>
To: Will Deacon <will@kernel.org>,
Julien Thierry <julien.thierry.kdev@gmail.com>
Cc: kvm@vger.kernel.org, kvmarm@lists.cs.columbia.edu,
linux-arm-kernel@lists.infradead.org,
Alexandru Elisei <alexandru.elisei@arm.com>,
Marc Zyngier <maz@kernel.org>
Subject: [PATCH kvmtool 18/21] pci: Switch trap handling to use MMIO handler
Date: Thu, 10 Dec 2020 14:29:05 +0000 [thread overview]
Message-ID: <20201210142908.169597-19-andre.przywara@arm.com> (raw)
In-Reply-To: <20201210142908.169597-1-andre.przywara@arm.com>
With the planned retirement of the special ioport emulation code, we
need to provide an emulation function compatible with the MMIO prototype.
Merge the existing _in and _out handlers to adhere to that MMIO
interface, and register these using the new registration function.
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
---
pci.c | 82 +++++++++++++++++------------------------------------------
1 file changed, 24 insertions(+), 58 deletions(-)
diff --git a/pci.c b/pci.c
index 2e2c0270..d6da79e0 100644
--- a/pci.c
+++ b/pci.c
@@ -87,29 +87,16 @@ static void *pci_config_address_ptr(u16 port)
return base + offset;
}
-static bool pci_config_address_out(struct ioport *ioport, struct kvm_cpu *vcpu, u16 port, void *data, int size)
+static void pci_config_address_mmio(struct kvm_cpu *vcpu, u64 addr, u8 *data,
+ u32 len, u8 is_write, void *ptr)
{
- void *p = pci_config_address_ptr(port);
+ void *p = pci_config_address_ptr(addr);
- memcpy(p, data, size);
-
- return true;
-}
-
-static bool pci_config_address_in(struct ioport *ioport, struct kvm_cpu *vcpu, u16 port, void *data, int size)
-{
- void *p = pci_config_address_ptr(port);
-
- memcpy(data, p, size);
-
- return true;
+ if (is_write)
+ memcpy(p, data, len);
+ else
+ memcpy(data, p, len);
}
-
-static struct ioport_operations pci_config_address_ops = {
- .io_in = pci_config_address_in,
- .io_out = pci_config_address_out,
-};
-
static bool pci_device_exists(u8 bus_number, u8 device_number, u8 function_number)
{
union pci_config_address pci_config_address;
@@ -125,49 +112,27 @@ static bool pci_device_exists(u8 bus_number, u8 device_number, u8 function_numbe
return !IS_ERR_OR_NULL(device__find_dev(DEVICE_BUS_PCI, device_number));
}
-static bool pci_config_data_out(struct ioport *ioport, struct kvm_cpu *vcpu, u16 port, void *data, int size)
-{
- union pci_config_address pci_config_address;
-
- if (size > 4)
- size = 4;
-
- pci_config_address.w = ioport__read32(&pci_config_address_bits);
- /*
- * If someone accesses PCI configuration space offsets that are not
- * aligned to 4 bytes, it uses ioports to signify that.
- */
- pci_config_address.reg_offset = port - PCI_CONFIG_DATA;
-
- pci__config_wr(vcpu->kvm, pci_config_address, data, size);
-
- return true;
-}
-
-static bool pci_config_data_in(struct ioport *ioport, struct kvm_cpu *vcpu, u16 port, void *data, int size)
+static void pci_config_data_mmio(struct kvm_cpu *vcpu, u64 addr, u8 *data,
+ u32 len, u8 is_write, void *kvm)
{
union pci_config_address pci_config_address;
- if (size > 4)
- size = 4;
+ if (len > 4)
+ len = 4;
pci_config_address.w = ioport__read32(&pci_config_address_bits);
/*
* If someone accesses PCI configuration space offsets that are not
* aligned to 4 bytes, it uses ioports to signify that.
*/
- pci_config_address.reg_offset = port - PCI_CONFIG_DATA;
+ pci_config_address.reg_offset = addr - PCI_CONFIG_DATA;
- pci__config_rd(vcpu->kvm, pci_config_address, data, size);
-
- return true;
+ if (is_write)
+ pci__config_wr(vcpu->kvm, pci_config_address, data, len);
+ else
+ pci__config_rd(vcpu->kvm, pci_config_address, data, len);
}
-static struct ioport_operations pci_config_data_ops = {
- .io_in = pci_config_data_in,
- .io_out = pci_config_data_out,
-};
-
static int pci_activate_bar(struct kvm *kvm, struct pci_device_header *pci_hdr,
int bar_num)
{
@@ -512,11 +477,12 @@ int pci__init(struct kvm *kvm)
{
int r;
- r = ioport__register(kvm, PCI_CONFIG_DATA + 0, &pci_config_data_ops, 4, NULL);
+ r = kvm__register_pio(kvm, PCI_CONFIG_DATA, 4,
+ pci_config_data_mmio, NULL);
if (r < 0)
return r;
-
- r = ioport__register(kvm, PCI_CONFIG_ADDRESS + 0, &pci_config_address_ops, 4, NULL);
+ r = kvm__register_pio(kvm, PCI_CONFIG_ADDRESS, 4,
+ pci_config_address_mmio, NULL);
if (r < 0)
goto err_unregister_data;
@@ -528,17 +494,17 @@ int pci__init(struct kvm *kvm)
return 0;
err_unregister_addr:
- ioport__unregister(kvm, PCI_CONFIG_ADDRESS);
+ kvm__deregister_pio(kvm, PCI_CONFIG_ADDRESS);
err_unregister_data:
- ioport__unregister(kvm, PCI_CONFIG_DATA);
+ kvm__deregister_pio(kvm, PCI_CONFIG_DATA);
return r;
}
dev_base_init(pci__init);
int pci__exit(struct kvm *kvm)
{
- ioport__unregister(kvm, PCI_CONFIG_DATA);
- ioport__unregister(kvm, PCI_CONFIG_ADDRESS);
+ kvm__deregister_pio(kvm, PCI_CONFIG_DATA);
+ kvm__deregister_pio(kvm, PCI_CONFIG_ADDRESS);
return 0;
}
--
2.17.1
next prev parent reply other threads:[~2020-12-10 19:05 UTC|newest]
Thread overview: 72+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-12-10 14:28 [PATCH kvmtool 00/21] Unify I/O port and MMIO trap handling Andre Przywara
2020-12-10 14:28 ` [PATCH kvmtool 01/21] ioport: Remove ioport__setup_arch() Andre Przywara
2021-02-10 17:44 ` Alexandru Elisei
2021-02-11 17:16 ` Andre Przywara
2021-02-11 17:32 ` Alexandru Elisei
2021-02-17 16:46 ` Andre Przywara
2021-02-22 10:23 ` Andre Przywara
2021-02-22 15:01 ` Alexandru Elisei
2020-12-10 14:28 ` [PATCH kvmtool 02/21] hw/serial: Use device abstraction for FDT generator function Andre Przywara
2021-02-11 12:05 ` Alexandru Elisei
2021-02-11 17:45 ` Andre Przywara
2020-12-10 14:28 ` [PATCH kvmtool 03/21] ioport: Retire .generate_fdt_node functionality Andre Przywara
2021-02-11 14:05 ` Alexandru Elisei
2021-02-17 15:54 ` Andre Przywara
2021-02-17 16:06 ` Alexandru Elisei
2020-12-10 14:28 ` [PATCH kvmtool 04/21] mmio: Extend handling to include ioport emulation Andre Przywara
2021-02-11 16:10 ` Alexandru Elisei
2021-02-17 17:43 ` Andre Przywara
2021-02-22 15:50 ` Alexandru Elisei
2020-12-10 14:28 ` [PATCH kvmtool 05/21] hw/i8042: Clean up data types Andre Przywara
2021-02-11 16:55 ` Alexandru Elisei
2021-02-17 17:46 ` Andre Przywara
2020-12-10 14:28 ` [PATCH kvmtool 06/21] hw/i8042: Refactor trap handler Andre Przywara
2021-02-11 17:23 ` Alexandru Elisei
2021-02-18 10:34 ` Andre Przywara
2021-02-18 11:17 ` Alexandru Elisei
2021-02-18 11:48 ` Andre Przywara
2021-02-22 16:03 ` Alexandru Elisei
2020-12-10 14:28 ` [PATCH kvmtool 07/21] hw/i8042: Switch to new trap handlers Andre Przywara
2021-02-12 10:41 ` Alexandru Elisei
2021-02-18 12:09 ` Andre Przywara
2021-02-22 16:19 ` Alexandru Elisei
2020-12-10 14:28 ` [PATCH kvmtool 08/21] x86/ioport: Refactor " Andre Przywara
2021-02-12 11:14 ` Alexandru Elisei
2020-12-10 14:28 ` [PATCH kvmtool 09/21] x86/ioport: Switch to new " Andre Przywara
2021-02-12 11:27 ` Alexandru Elisei
2021-02-18 14:05 ` Andre Przywara
2020-12-10 14:28 ` [PATCH kvmtool 10/21] hw/rtc: Refactor " Andre Przywara
2021-02-12 11:56 ` Alexandru Elisei
2020-12-10 14:28 ` [PATCH kvmtool 11/21] hw/rtc: Switch to new trap handler Andre Przywara
2021-02-12 12:02 ` Alexandru Elisei
2020-12-10 14:28 ` [PATCH kvmtool 12/21] hw/vesa: Switch trap handling to use MMIO handler Andre Przywara
2021-02-12 17:50 ` Alexandru Elisei
2020-12-10 14:29 ` [PATCH kvmtool 13/21] hw/serial: Refactor trap handler Andre Przywara
2021-02-16 14:22 ` Alexandru Elisei
2021-02-18 14:41 ` Andre Przywara
2021-02-22 17:40 ` Alexandru Elisei
2021-02-24 14:54 ` Andre Przywara
2020-12-10 14:29 ` [PATCH kvmtool 14/21] hw/serial: Switch to new trap handlers Andre Przywara
2021-02-16 14:31 ` Alexandru Elisei
2020-12-10 14:29 ` [PATCH kvmtool 15/21] vfio: Refactor ioport trap handler Andre Przywara
2021-02-16 14:47 ` Alexandru Elisei
2021-02-18 15:51 ` Andre Przywara
2020-12-10 14:29 ` [PATCH kvmtool 16/21] vfio: Switch to new ioport trap handlers Andre Przywara
2021-02-16 14:52 ` Alexandru Elisei
2020-12-10 14:29 ` [PATCH kvmtool 17/21] virtio: Switch trap handling to use MMIO handler Andre Przywara
2021-02-16 17:03 ` Alexandru Elisei
2021-02-18 16:13 ` Andre Przywara
2020-12-10 14:29 ` Andre Przywara [this message]
2021-02-17 15:14 ` [PATCH kvmtool 18/21] pci: " Alexandru Elisei
2020-12-10 14:29 ` [PATCH kvmtool 19/21] Remove ioport specific routines Andre Przywara
2021-02-17 15:49 ` Alexandru Elisei
2021-02-17 16:11 ` Alexandru Elisei
2021-02-18 16:34 ` Andre Przywara
2020-12-10 14:29 ` [PATCH kvmtool 20/21] hw/serial: ARM/arm64: Use MMIO at higher addresses Andre Przywara
2021-02-17 16:48 ` Alexandru Elisei
2021-02-18 12:18 ` Alexandru Elisei
2021-02-18 16:38 ` Andre Przywara
2020-12-10 14:29 ` [PATCH kvmtool 21/21] hw/rtc: " Andre Przywara
2021-02-18 13:33 ` Alexandru Elisei
2021-02-18 16:41 ` Andre Przywara
2021-02-10 17:44 ` [PATCH kvmtool 00/21] Unify I/O port and MMIO trap handling Alexandru Elisei
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