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Kernel/Storage: Don't try to enumerate PCI adapters if PCI is disabled
If there's no PCI bus, then it's safe to assume that we run on a x86 machine that has an ISA IDE controller in the system. In such case, we just instantiate a ISAIDEController object that assumes fixed locations of IDE IO ports.
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11 changed files with 283 additions and 142 deletions
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@ -1,5 +1,5 @@
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/*
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* Copyright (c) 2020, Liav A. <liavalb@hotmail.co.il>
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* Copyright (c) 2020-2022, Liav A. <liavalb@hotmail.co.il>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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@ -17,34 +17,22 @@ namespace Kernel {
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class AsyncBlockDeviceRequest;
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class IDEController final : public ATAController
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, public PCI::Device {
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class IDEController : public ATAController {
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public:
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static NonnullRefPtr<IDEController> initialize(PCI::DeviceIdentifier const&, bool force_pio);
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static NonnullRefPtr<IDEController> initialize();
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virtual ~IDEController() override;
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virtual RefPtr<StorageDevice> device(u32 index) const override;
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virtual bool reset() override;
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virtual bool shutdown() override;
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virtual size_t devices_count() const override;
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virtual void start_request(const ATADevice&, AsyncBlockDeviceRequest&) override;
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virtual void complete_current_request(AsyncDeviceRequest::RequestResult) override;
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virtual RefPtr<StorageDevice> device(u32 index) const override final;
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virtual bool reset() override final;
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virtual bool shutdown() override final;
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virtual size_t devices_count() const override final;
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virtual void start_request(const ATADevice&, AsyncBlockDeviceRequest&) override final;
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virtual void complete_current_request(AsyncDeviceRequest::RequestResult) override final;
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bool is_bus_master_capable() const;
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bool is_pci_native_mode_enabled() const;
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private:
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bool is_pci_native_mode_enabled_on_primary_channel() const;
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bool is_pci_native_mode_enabled_on_secondary_channel() const;
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IDEController(PCI::DeviceIdentifier const&, bool force_pio);
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protected:
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IDEController();
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RefPtr<StorageDevice> device_by_channel_and_position(u32 index) const;
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void initialize(bool force_pio);
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void detect_disks();
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NonnullRefPtrVector<IDEChannel> m_channels;
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// FIXME: Find a better way to get the ProgrammingInterface
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PCI::ProgrammingInterface m_prog_if;
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PCI::InterruptLine m_interrupt_line;
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};
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}
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