forked from Minki/linux
PCI: Fix comment typos
Fix spelling errors and format function comments consistently. Changes whitespace and comments only; no functional change intended. Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Reviewed-by: Mukesh Ojha <mojha@codeaurora.org>
This commit is contained in:
Bjorn Helgaas
parent
35d0a06dad
commit
74356addc0
@ -1,6 +1,6 @@
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// SPDX-License-Identifier: GPL-2.0
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/*
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* Simple, generic PCI host controller driver targetting firmware-initialised
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* Simple, generic PCI host controller driver targeting firmware-initialised
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* systems and virtual machines (e.g. the PCI emulation provided by kvmtool).
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*
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* Copyright (C) 2014 ARM Limited
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@ -367,7 +367,7 @@ static void iproc_msi_handler(struct irq_desc *desc)
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/*
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* Now go read the tail pointer again to see if there are new
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* oustanding events that came in during the above window.
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* outstanding events that came in during the above window.
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*/
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} while (true);
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@ -197,8 +197,8 @@ EXPORT_SYMBOL_GPL(pci_ioremap_wc_bar);
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/**
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* pci_dev_str_match_path - test if a path string matches a device
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* @dev: the PCI device to test
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* @path: string to match the device against
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* @dev: the PCI device to test
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* @path: string to match the device against
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* @endptr: pointer to the string after the match
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*
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* Test if a string (typically from a kernel parameter) formatted as a
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@ -280,8 +280,8 @@ free_and_exit:
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/**
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* pci_dev_str_match - test if a string matches a device
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* @dev: the PCI device to test
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* @p: string to match the device against
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* @dev: the PCI device to test
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* @p: string to match the device against
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* @endptr: pointer to the string after the match
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*
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* Test if a string (typically from a kernel parameter) matches a specified
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@ -341,7 +341,7 @@ static int pci_dev_str_match(struct pci_dev *dev, const char *p,
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} else {
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/*
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* PCI Bus, Device, Function IDs are specified
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* (optionally, may include a path of devfns following it)
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* (optionally, may include a path of devfns following it)
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*/
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ret = pci_dev_str_match_path(dev, p, &p);
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if (ret < 0)
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@ -425,7 +425,7 @@ static int __pci_bus_find_cap_start(struct pci_bus *bus,
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* Tell if a device supports a given PCI capability.
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* Returns the address of the requested capability structure within the
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* device's PCI configuration space or 0 in case the device does not
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* support it. Possible values for @cap:
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* support it. Possible values for @cap include:
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*
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* %PCI_CAP_ID_PM Power Management
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* %PCI_CAP_ID_AGP Accelerated Graphics Port
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@ -450,11 +450,11 @@ EXPORT_SYMBOL(pci_find_capability);
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/**
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* pci_bus_find_capability - query for devices' capabilities
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* @bus: the PCI bus to query
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* @bus: the PCI bus to query
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* @devfn: PCI device to query
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* @cap: capability code
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* @cap: capability code
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*
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* Like pci_find_capability() but works for pci devices that do not have a
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* Like pci_find_capability() but works for PCI devices that do not have a
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* pci_dev structure set up yet.
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*
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* Returns the address of the requested capability structure within the
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@ -535,7 +535,7 @@ EXPORT_SYMBOL_GPL(pci_find_next_ext_capability);
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*
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* Returns the address of the requested extended capability structure
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* within the device's PCI configuration space or 0 if the device does
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* not support it. Possible values for @cap:
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* not support it. Possible values for @cap include:
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*
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* %PCI_EXT_CAP_ID_ERR Advanced Error Reporting
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* %PCI_EXT_CAP_ID_VC Virtual Channel
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@ -618,12 +618,13 @@ int pci_find_ht_capability(struct pci_dev *dev, int ht_cap)
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EXPORT_SYMBOL_GPL(pci_find_ht_capability);
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/**
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* pci_find_parent_resource - return resource region of parent bus of given region
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* pci_find_parent_resource - return resource region of parent bus of given
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* region
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* @dev: PCI device structure contains resources to be searched
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* @res: child resource record for which parent is sought
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*
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* For given resource region of given device, return the resource
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* region of parent bus the given region is contained in.
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* For given resource region of given device, return the resource region of
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* parent bus the given region is contained in.
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*/
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struct resource *pci_find_parent_resource(const struct pci_dev *dev,
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struct resource *res)
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@ -800,7 +801,7 @@ static inline bool platform_pci_bridge_d3(struct pci_dev *dev)
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/**
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* pci_raw_set_power_state - Use PCI PM registers to set the power state of
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* given PCI device
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* given PCI device
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* @dev: PCI device to handle.
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* @state: PCI power state (D0, D1, D2, D3hot) to put the device into.
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*
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@ -826,7 +827,8 @@ static int pci_raw_set_power_state(struct pci_dev *dev, pci_power_t state)
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if (state < PCI_D0 || state > PCI_D3hot)
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return -EINVAL;
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/* Validate current state:
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/*
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* Validate current state:
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* Can enter D0 from any state, but if we can only go deeper
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* to sleep if we're already in a low power state
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*/
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@ -837,14 +839,15 @@ static int pci_raw_set_power_state(struct pci_dev *dev, pci_power_t state)
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return -EINVAL;
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}
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/* check if this device supports the desired state */
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/* Check if this device supports the desired state */
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if ((state == PCI_D1 && !dev->d1_support)
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|| (state == PCI_D2 && !dev->d2_support))
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return -EIO;
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pci_read_config_word(dev, dev->pm_cap + PCI_PM_CTRL, &pmcsr);
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/* If we're (effectively) in D3, force entire word to 0.
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/*
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* If we're (effectively) in D3, force entire word to 0.
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* This doesn't affect PME_Status, disables PME_En, and
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* sets PowerState to 0.
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*/
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@ -867,11 +870,13 @@ static int pci_raw_set_power_state(struct pci_dev *dev, pci_power_t state)
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break;
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}
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/* enter specified state */
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/* Enter specified state */
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pci_write_config_word(dev, dev->pm_cap + PCI_PM_CTRL, pmcsr);
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/* Mandatory power management transition delays */
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/* see PCI PM 1.1 5.6.1 table 18 */
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/*
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* Mandatory power management transition delays; see PCI PM 1.1
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* 5.6.1 table 18
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*/
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if (state == PCI_D3hot || dev->current_state == PCI_D3hot)
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pci_dev_d3_sleep(dev);
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else if (state == PCI_D2 || dev->current_state == PCI_D2)
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@ -1085,16 +1090,18 @@ int pci_set_power_state(struct pci_dev *dev, pci_power_t state)
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{
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int error;
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/* bound the state we're entering */
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/* Bound the state we're entering */
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if (state > PCI_D3cold)
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state = PCI_D3cold;
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else if (state < PCI_D0)
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state = PCI_D0;
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else if ((state == PCI_D1 || state == PCI_D2) && pci_no_d1d2(dev))
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/*
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* If the device or the parent bridge do not support PCI PM,
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* ignore the request if we're doing anything other than putting
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* it into D0 (which would only happen on boot).
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* If the device or the parent bridge do not support PCI
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* PM, ignore the request if we're doing anything other
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* than putting it into D0 (which would only happen on
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* boot).
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*/
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return 0;
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@ -1104,8 +1111,10 @@ int pci_set_power_state(struct pci_dev *dev, pci_power_t state)
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__pci_start_power_transition(dev, state);
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/* This device is quirked not to be put into D3, so
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don't put it in D3 */
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/*
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* This device is quirked not to be put into D3, so don't put it in
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* D3
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*/
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if (state >= PCI_D3hot && (dev->dev_flags & PCI_DEV_FLAGS_NO_D3))
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return 0;
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@ -1127,12 +1136,11 @@ EXPORT_SYMBOL(pci_set_power_state);
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* pci_choose_state - Choose the power state of a PCI device
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* @dev: PCI device to be suspended
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* @state: target sleep state for the whole system. This is the value
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* that is passed to suspend() function.
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* that is passed to suspend() function.
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*
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* Returns PCI power state suitable for given device and given system
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* message.
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*/
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pci_power_t pci_choose_state(struct pci_dev *dev, pm_message_t state)
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{
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pci_power_t ret;
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@ -1310,8 +1318,9 @@ static void pci_restore_ltr_state(struct pci_dev *dev)
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}
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/**
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* pci_save_state - save the PCI configuration space of a device before suspending
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* @dev: - PCI device that we're dealing with
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* pci_save_state - save the PCI configuration space of a device before
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* suspending
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* @dev: PCI device that we're dealing with
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*/
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int pci_save_state(struct pci_dev *dev)
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{
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@ -1422,7 +1431,7 @@ static void pci_restore_rebar_state(struct pci_dev *pdev)
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/**
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* pci_restore_state - Restore the saved state of a PCI device
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* @dev: - PCI device that we're dealing with
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* @dev: PCI device that we're dealing with
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*/
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void pci_restore_state(struct pci_dev *dev)
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{
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@ -1599,8 +1608,8 @@ static int do_pci_enable_device(struct pci_dev *dev, int bars)
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* pci_reenable_device - Resume abandoned device
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* @dev: PCI device to be resumed
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*
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* Note this function is a backend of pci_default_resume and is not supposed
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* to be called by normal code, write proper resume handler and use it instead.
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* NOTE: This function is a backend of pci_default_resume() and is not supposed
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* to be called by normal code, write proper resume handler and use it instead.
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*/
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int pci_reenable_device(struct pci_dev *dev)
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{
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@ -1675,9 +1684,9 @@ static int pci_enable_device_flags(struct pci_dev *dev, unsigned long flags)
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* pci_enable_device_io - Initialize a device for use with IO space
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* @dev: PCI device to be initialized
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*
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* Initialize device before it's used by a driver. Ask low-level code
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* to enable I/O resources. Wake up the device if it was suspended.
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* Beware, this function can fail.
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* Initialize device before it's used by a driver. Ask low-level code
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* to enable I/O resources. Wake up the device if it was suspended.
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* Beware, this function can fail.
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*/
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int pci_enable_device_io(struct pci_dev *dev)
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{
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@ -1689,9 +1698,9 @@ EXPORT_SYMBOL(pci_enable_device_io);
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* pci_enable_device_mem - Initialize a device for use with Memory space
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* @dev: PCI device to be initialized
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*
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* Initialize device before it's used by a driver. Ask low-level code
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* to enable Memory resources. Wake up the device if it was suspended.
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* Beware, this function can fail.
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* Initialize device before it's used by a driver. Ask low-level code
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* to enable Memory resources. Wake up the device if it was suspended.
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* Beware, this function can fail.
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*/
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int pci_enable_device_mem(struct pci_dev *dev)
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{
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@ -1703,12 +1712,12 @@ EXPORT_SYMBOL(pci_enable_device_mem);
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* pci_enable_device - Initialize device before it's used by a driver.
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* @dev: PCI device to be initialized
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*
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* Initialize device before it's used by a driver. Ask low-level code
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* to enable I/O and memory. Wake up the device if it was suspended.
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* Beware, this function can fail.
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* Initialize device before it's used by a driver. Ask low-level code
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* to enable I/O and memory. Wake up the device if it was suspended.
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* Beware, this function can fail.
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*
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* Note we don't actually enable the device many times if we call
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* this function repeatedly (we just increment the count).
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* Note we don't actually enable the device many times if we call
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* this function repeatedly (we just increment the count).
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*/
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int pci_enable_device(struct pci_dev *dev)
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{
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@ -1717,8 +1726,8 @@ int pci_enable_device(struct pci_dev *dev)
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EXPORT_SYMBOL(pci_enable_device);
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/*
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* Managed PCI resources. This manages device on/off, intx/msi/msix
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* on/off and BAR regions. pci_dev itself records msi/msix status, so
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* Managed PCI resources. This manages device on/off, INTx/MSI/MSI-X
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* on/off and BAR regions. pci_dev itself records MSI/MSI-X status, so
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* there's no need to track it separately. pci_devres is initialized
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* when a device is enabled using managed PCI device enable interface.
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*/
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@ -1836,7 +1845,8 @@ int __weak pcibios_add_device(struct pci_dev *dev)
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}
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/**
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* pcibios_release_device - provide arch specific hooks when releasing device dev
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* pcibios_release_device - provide arch specific hooks when releasing
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* device dev
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* @dev: the PCI device being released
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*
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* Permits the platform to provide architecture specific functionality when
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@ -1927,8 +1937,7 @@ EXPORT_SYMBOL(pci_disable_device);
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* @dev: the PCIe device reset
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* @state: Reset state to enter into
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*
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*
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* Sets the PCIe reset state for the device. This is the default
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* Set the PCIe reset state for the device. This is the default
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* implementation. Architecture implementations can override this.
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*/
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int __weak pcibios_set_pcie_reset_state(struct pci_dev *dev,
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@ -1942,7 +1951,6 @@ int __weak pcibios_set_pcie_reset_state(struct pci_dev *dev,
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* @dev: the PCIe device reset
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* @state: Reset state to enter into
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*
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*
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* Sets the PCI reset state for the device.
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*/
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int pci_set_pcie_reset_state(struct pci_dev *dev, enum pcie_reset_state state)
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@ -2339,7 +2347,8 @@ static pci_power_t pci_target_state(struct pci_dev *dev, bool wakeup)
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}
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/**
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* pci_prepare_to_sleep - prepare PCI device for system-wide transition into a sleep state
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* pci_prepare_to_sleep - prepare PCI device for system-wide transition
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* into a sleep state
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* @dev: Device to handle.
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*
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* Choose the power state appropriate for the device depending on whether
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@ -2367,7 +2376,8 @@ int pci_prepare_to_sleep(struct pci_dev *dev)
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EXPORT_SYMBOL(pci_prepare_to_sleep);
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/**
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* pci_back_from_sleep - turn PCI device on during system-wide transition into working state
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* pci_back_from_sleep - turn PCI device on during system-wide transition
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* into working state
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* @dev: Device to handle.
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*
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* Disable device's system wake-up capability and put it into D0.
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@ -3005,7 +3015,7 @@ static void pci_add_saved_cap(struct pci_dev *pci_dev,
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/**
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* _pci_add_cap_save_buffer - allocate buffer for saving given
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* capability registers
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* capability registers
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* @dev: the PCI device
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* @cap: the capability to allocate the buffer for
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* @extended: Standard or Extended capability ID
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@ -3186,7 +3196,7 @@ static void pci_disable_acs_redir(struct pci_dev *dev)
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}
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/**
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* pci_std_enable_acs - enable ACS on devices using standard ACS capabilites
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* pci_std_enable_acs - enable ACS on devices using standard ACS capabilities
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* @dev: the PCI device
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*/
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static void pci_std_enable_acs(struct pci_dev *dev)
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@ -3609,13 +3619,14 @@ u8 pci_common_swizzle(struct pci_dev *dev, u8 *pinp)
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EXPORT_SYMBOL_GPL(pci_common_swizzle);
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/**
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* pci_release_region - Release a PCI bar
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* @pdev: PCI device whose resources were previously reserved by pci_request_region
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* @bar: BAR to release
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* pci_release_region - Release a PCI bar
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* @pdev: PCI device whose resources were previously reserved by
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* pci_request_region()
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* @bar: BAR to release
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*
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* Releases the PCI I/O and memory resources previously reserved by a
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* successful call to pci_request_region. Call this function only
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* after all use of the PCI regions has ceased.
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* Releases the PCI I/O and memory resources previously reserved by a
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* successful call to pci_request_region(). Call this function only
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* after all use of the PCI regions has ceased.
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*/
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void pci_release_region(struct pci_dev *pdev, int bar)
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{
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@ -3637,23 +3648,23 @@ void pci_release_region(struct pci_dev *pdev, int bar)
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EXPORT_SYMBOL(pci_release_region);
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/**
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* __pci_request_region - Reserved PCI I/O and memory resource
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* @pdev: PCI device whose resources are to be reserved
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* @bar: BAR to be reserved
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* @res_name: Name to be associated with resource.
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* @exclusive: whether the region access is exclusive or not
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* __pci_request_region - Reserved PCI I/O and memory resource
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* @pdev: PCI device whose resources are to be reserved
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* @bar: BAR to be reserved
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* @res_name: Name to be associated with resource.
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* @exclusive: whether the region access is exclusive or not
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*
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* Mark the PCI region associated with PCI device @pdev BR @bar as
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* being reserved by owner @res_name. Do not access any
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* address inside the PCI regions unless this call returns
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* successfully.
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* Mark the PCI region associated with PCI device @pdev BAR @bar as
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* being reserved by owner @res_name. Do not access any
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* address inside the PCI regions unless this call returns
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* successfully.
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*
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* If @exclusive is set, then the region is marked so that userspace
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* is explicitly not allowed to map the resource via /dev/mem or
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* sysfs MMIO access.
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* If @exclusive is set, then the region is marked so that userspace
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* is explicitly not allowed to map the resource via /dev/mem or
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* sysfs MMIO access.
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*
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* Returns 0 on success, or %EBUSY on error. A warning
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* message is also printed on failure.
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* Returns 0 on success, or %EBUSY on error. A warning
|
||||
* message is also printed on failure.
|
||||
*/
|
||||
static int __pci_request_region(struct pci_dev *pdev, int bar,
|
||||
const char *res_name, int exclusive)
|
||||
@ -3687,18 +3698,18 @@ err_out:
|
||||
}
|
||||
|
||||
/**
|
||||
* pci_request_region - Reserve PCI I/O and memory resource
|
||||
* @pdev: PCI device whose resources are to be reserved
|
||||
* @bar: BAR to be reserved
|
||||
* @res_name: Name to be associated with resource
|
||||
* pci_request_region - Reserve PCI I/O and memory resource
|
||||
* @pdev: PCI device whose resources are to be reserved
|
||||
* @bar: BAR to be reserved
|
||||
* @res_name: Name to be associated with resource
|
||||
*
|
||||
* Mark the PCI region associated with PCI device @pdev BAR @bar as
|
||||
* being reserved by owner @res_name. Do not access any
|
||||
* address inside the PCI regions unless this call returns
|
||||
* successfully.
|
||||
* Mark the PCI region associated with PCI device @pdev BAR @bar as
|
||||
* being reserved by owner @res_name. Do not access any
|
||||
* address inside the PCI regions unless this call returns
|
||||
* successfully.
|
||||
*
|
||||
* Returns 0 on success, or %EBUSY on error. A warning
|
||||
* message is also printed on failure.
|
||||
* Returns 0 on success, or %EBUSY on error. A warning
|
||||
* message is also printed on failure.
|
||||
*/
|
||||
int pci_request_region(struct pci_dev *pdev, int bar, const char *res_name)
|
||||
{
|
||||
@ -3707,22 +3718,22 @@ int pci_request_region(struct pci_dev *pdev, int bar, const char *res_name)
|
||||
EXPORT_SYMBOL(pci_request_region);
|
||||
|
||||
/**
|
||||
* pci_request_region_exclusive - Reserved PCI I/O and memory resource
|
||||
* @pdev: PCI device whose resources are to be reserved
|
||||
* @bar: BAR to be reserved
|
||||
* @res_name: Name to be associated with resource.
|
||||
* pci_request_region_exclusive - Reserved PCI I/O and memory resource
|
||||
* @pdev: PCI device whose resources are to be reserved
|
||||
* @bar: BAR to be reserved
|
||||
* @res_name: Name to be associated with resource.
|
||||
*
|
||||
* Mark the PCI region associated with PCI device @pdev BR @bar as
|
||||
* being reserved by owner @res_name. Do not access any
|
||||
* address inside the PCI regions unless this call returns
|
||||
* successfully.
|
||||
* Mark the PCI region associated with PCI device @pdev BAR @bar as
|
||||
* being reserved by owner @res_name. Do not access any
|
||||
* address inside the PCI regions unless this call returns
|
||||
* successfully.
|
||||
*
|
||||
* Returns 0 on success, or %EBUSY on error. A warning
|
||||
* message is also printed on failure.
|
||||
* Returns 0 on success, or %EBUSY on error. A warning
|
||||
* message is also printed on failure.
|
||||
*
|
||||
* The key difference that _exclusive makes it that userspace is
|
||||
* explicitly not allowed to map the resource via /dev/mem or
|
||||
* sysfs.
|
||||
* The key difference that _exclusive makes it that userspace is
|
||||
* explicitly not allowed to map the resource via /dev/mem or
|
||||
* sysfs.
|
||||
*/
|
||||
int pci_request_region_exclusive(struct pci_dev *pdev, int bar,
|
||||
const char *res_name)
|
||||
@ -3791,12 +3802,13 @@ int pci_request_selected_regions_exclusive(struct pci_dev *pdev, int bars,
|
||||
EXPORT_SYMBOL(pci_request_selected_regions_exclusive);
|
||||
|
||||
/**
|
||||
* pci_release_regions - Release reserved PCI I/O and memory resources
|
||||
* @pdev: PCI device whose resources were previously reserved by pci_request_regions
|
||||
* pci_release_regions - Release reserved PCI I/O and memory resources
|
||||
* @pdev: PCI device whose resources were previously reserved by
|
||||
* pci_request_regions()
|
||||
*
|
||||
* Releases all PCI I/O and memory resources previously reserved by a
|
||||
* successful call to pci_request_regions. Call this function only
|
||||
* after all use of the PCI regions has ceased.
|
||||
* Releases all PCI I/O and memory resources previously reserved by a
|
||||
* successful call to pci_request_regions(). Call this function only
|
||||
* after all use of the PCI regions has ceased.
|
||||
*/
|
||||
|
||||
void pci_release_regions(struct pci_dev *pdev)
|
||||
@ -3806,17 +3818,17 @@ void pci_release_regions(struct pci_dev *pdev)
|
||||
EXPORT_SYMBOL(pci_release_regions);
|
||||
|
||||
/**
|
||||
* pci_request_regions - Reserved PCI I/O and memory resources
|
||||
* @pdev: PCI device whose resources are to be reserved
|
||||
* @res_name: Name to be associated with resource.
|
||||
* pci_request_regions - Reserve PCI I/O and memory resources
|
||||
* @pdev: PCI device whose resources are to be reserved
|
||||
* @res_name: Name to be associated with resource.
|
||||
*
|
||||
* Mark all PCI regions associated with PCI device @pdev as
|
||||
* being reserved by owner @res_name. Do not access any
|
||||
* address inside the PCI regions unless this call returns
|
||||
* successfully.
|
||||
* Mark all PCI regions associated with PCI device @pdev as
|
||||
* being reserved by owner @res_name. Do not access any
|
||||
* address inside the PCI regions unless this call returns
|
||||
* successfully.
|
||||
*
|
||||
* Returns 0 on success, or %EBUSY on error. A warning
|
||||
* message is also printed on failure.
|
||||
* Returns 0 on success, or %EBUSY on error. A warning
|
||||
* message is also printed on failure.
|
||||
*/
|
||||
int pci_request_regions(struct pci_dev *pdev, const char *res_name)
|
||||
{
|
||||
@ -3825,20 +3837,19 @@ int pci_request_regions(struct pci_dev *pdev, const char *res_name)
|
||||
EXPORT_SYMBOL(pci_request_regions);
|
||||
|
||||
/**
|
||||
* pci_request_regions_exclusive - Reserved PCI I/O and memory resources
|
||||
* @pdev: PCI device whose resources are to be reserved
|
||||
* @res_name: Name to be associated with resource.
|
||||
* pci_request_regions_exclusive - Reserve PCI I/O and memory resources
|
||||
* @pdev: PCI device whose resources are to be reserved
|
||||
* @res_name: Name to be associated with resource.
|
||||
*
|
||||
* Mark all PCI regions associated with PCI device @pdev as
|
||||
* being reserved by owner @res_name. Do not access any
|
||||
* address inside the PCI regions unless this call returns
|
||||
* successfully.
|
||||
* Mark all PCI regions associated with PCI device @pdev as being reserved
|
||||
* by owner @res_name. Do not access any address inside the PCI regions
|
||||
* unless this call returns successfully.
|
||||
*
|
||||
* pci_request_regions_exclusive() will mark the region so that
|
||||
* /dev/mem and the sysfs MMIO access will not be allowed.
|
||||
* pci_request_regions_exclusive() will mark the region so that /dev/mem
|
||||
* and the sysfs MMIO access will not be allowed.
|
||||
*
|
||||
* Returns 0 on success, or %EBUSY on error. A warning
|
||||
* message is also printed on failure.
|
||||
* Returns 0 on success, or %EBUSY on error. A warning message is also
|
||||
* printed on failure.
|
||||
*/
|
||||
int pci_request_regions_exclusive(struct pci_dev *pdev, const char *res_name)
|
||||
{
|
||||
@ -3849,7 +3860,7 @@ EXPORT_SYMBOL(pci_request_regions_exclusive);
|
||||
|
||||
/*
|
||||
* Record the PCI IO range (expressed as CPU physical address + size).
|
||||
* Return a negative value if an error has occured, zero otherwise
|
||||
* Return a negative value if an error has occurred, zero otherwise
|
||||
*/
|
||||
int pci_register_io_range(struct fwnode_handle *fwnode, phys_addr_t addr,
|
||||
resource_size_t size)
|
||||
@ -3905,14 +3916,14 @@ unsigned long __weak pci_address_to_pio(phys_addr_t address)
|
||||
}
|
||||
|
||||
/**
|
||||
* pci_remap_iospace - Remap the memory mapped I/O space
|
||||
* @res: Resource describing the I/O space
|
||||
* @phys_addr: physical address of range to be mapped
|
||||
* pci_remap_iospace - Remap the memory mapped I/O space
|
||||
* @res: Resource describing the I/O space
|
||||
* @phys_addr: physical address of range to be mapped
|
||||
*
|
||||
* Remap the memory mapped I/O space described by the @res
|
||||
* and the CPU physical address @phys_addr into virtual address space.
|
||||
* Only architectures that have memory mapped IO functions defined
|
||||
* (and the PCI_IOBASE value defined) should call this function.
|
||||
* Remap the memory mapped I/O space described by the @res and the CPU
|
||||
* physical address @phys_addr into virtual address space. Only
|
||||
* architectures that have memory mapped IO functions defined (and the
|
||||
* PCI_IOBASE value defined) should call this function.
|
||||
*/
|
||||
int pci_remap_iospace(const struct resource *res, phys_addr_t phys_addr)
|
||||
{
|
||||
@ -3928,8 +3939,10 @@ int pci_remap_iospace(const struct resource *res, phys_addr_t phys_addr)
|
||||
return ioremap_page_range(vaddr, vaddr + resource_size(res), phys_addr,
|
||||
pgprot_device(PAGE_KERNEL));
|
||||
#else
|
||||
/* this architecture does not have memory mapped I/O space,
|
||||
so this function should never be called */
|
||||
/*
|
||||
* This architecture does not have memory mapped I/O space,
|
||||
* so this function should never be called
|
||||
*/
|
||||
WARN_ONCE(1, "This architecture does not support memory mapped I/O\n");
|
||||
return -ENODEV;
|
||||
#endif
|
||||
@ -3937,12 +3950,12 @@ int pci_remap_iospace(const struct resource *res, phys_addr_t phys_addr)
|
||||
EXPORT_SYMBOL(pci_remap_iospace);
|
||||
|
||||
/**
|
||||
* pci_unmap_iospace - Unmap the memory mapped I/O space
|
||||
* @res: resource to be unmapped
|
||||
* pci_unmap_iospace - Unmap the memory mapped I/O space
|
||||
* @res: resource to be unmapped
|
||||
*
|
||||
* Unmap the CPU virtual address @res from virtual address space.
|
||||
* Only architectures that have memory mapped IO functions defined
|
||||
* (and the PCI_IOBASE value defined) should call this function.
|
||||
* Unmap the CPU virtual address @res from virtual address space. Only
|
||||
* architectures that have memory mapped IO functions defined (and the
|
||||
* PCI_IOBASE value defined) should call this function.
|
||||
*/
|
||||
void pci_unmap_iospace(struct resource *res)
|
||||
{
|
||||
@ -4288,7 +4301,7 @@ EXPORT_SYMBOL(pci_clear_mwi);
|
||||
* @pdev: the PCI device to operate on
|
||||
* @enable: boolean: whether to enable or disable PCI INTx
|
||||
*
|
||||
* Enables/disables PCI INTx for device dev
|
||||
* Enables/disables PCI INTx for device @pdev
|
||||
*/
|
||||
void pci_intx(struct pci_dev *pdev, int enable)
|
||||
{
|
||||
@ -4364,9 +4377,8 @@ done:
|
||||
* pci_check_and_mask_intx - mask INTx on pending interrupt
|
||||
* @dev: the PCI device to operate on
|
||||
*
|
||||
* Check if the device dev has its INTx line asserted, mask it and
|
||||
* return true in that case. False is returned if no interrupt was
|
||||
* pending.
|
||||
* Check if the device dev has its INTx line asserted, mask it and return
|
||||
* true in that case. False is returned if no interrupt was pending.
|
||||
*/
|
||||
bool pci_check_and_mask_intx(struct pci_dev *dev)
|
||||
{
|
||||
@ -4378,9 +4390,9 @@ EXPORT_SYMBOL_GPL(pci_check_and_mask_intx);
|
||||
* pci_check_and_unmask_intx - unmask INTx if no interrupt is pending
|
||||
* @dev: the PCI device to operate on
|
||||
*
|
||||
* Check if the device dev has its INTx line asserted, unmask it if not
|
||||
* and return true. False is returned and the mask remains active if
|
||||
* there was still an interrupt pending.
|
||||
* Check if the device dev has its INTx line asserted, unmask it if not and
|
||||
* return true. False is returned and the mask remains active if there was
|
||||
* still an interrupt pending.
|
||||
*/
|
||||
bool pci_check_and_unmask_intx(struct pci_dev *dev)
|
||||
{
|
||||
@ -4389,7 +4401,7 @@ bool pci_check_and_unmask_intx(struct pci_dev *dev)
|
||||
EXPORT_SYMBOL_GPL(pci_check_and_unmask_intx);
|
||||
|
||||
/**
|
||||
* pci_wait_for_pending_transaction - waits for pending transaction
|
||||
* pci_wait_for_pending_transaction - wait for pending transaction
|
||||
* @dev: the PCI device to operate on
|
||||
*
|
||||
* Return 0 if transaction is pending 1 otherwise.
|
||||
@ -4447,7 +4459,7 @@ static int pci_dev_wait(struct pci_dev *dev, char *reset_type, int timeout)
|
||||
|
||||
/**
|
||||
* pcie_has_flr - check if a device supports function level resets
|
||||
* @dev: device to check
|
||||
* @dev: device to check
|
||||
*
|
||||
* Returns true if the device advertises support for PCIe function level
|
||||
* resets.
|
||||
@ -4466,7 +4478,7 @@ EXPORT_SYMBOL_GPL(pcie_has_flr);
|
||||
|
||||
/**
|
||||
* pcie_flr - initiate a PCIe function level reset
|
||||
* @dev: device to reset
|
||||
* @dev: device to reset
|
||||
*
|
||||
* Initiate a function level reset on @dev. The caller should ensure the
|
||||
* device supports FLR before calling this function, e.g. by using the
|
||||
@ -4810,6 +4822,7 @@ static void pci_dev_restore(struct pci_dev *dev)
|
||||
*
|
||||
* The device function is presumed to be unused and the caller is holding
|
||||
* the device mutex lock when this function is called.
|
||||
*
|
||||
* Resetting the device will make the contents of PCI configuration space
|
||||
* random, so any caller of this must be prepared to reinitialise the
|
||||
* device including MSI, bus mastering, BARs, decoding IO and memory spaces,
|
||||
@ -5373,8 +5386,8 @@ EXPORT_SYMBOL_GPL(pci_reset_bus);
|
||||
* pcix_get_max_mmrbc - get PCI-X maximum designed memory read byte count
|
||||
* @dev: PCI device to query
|
||||
*
|
||||
* Returns mmrbc: maximum designed memory read count in bytes
|
||||
* or appropriate error value.
|
||||
* Returns mmrbc: maximum designed memory read count in bytes or
|
||||
* appropriate error value.
|
||||
*/
|
||||
int pcix_get_max_mmrbc(struct pci_dev *dev)
|
||||
{
|
||||
@ -5396,8 +5409,8 @@ EXPORT_SYMBOL(pcix_get_max_mmrbc);
|
||||
* pcix_get_mmrbc - get PCI-X maximum memory read byte count
|
||||
* @dev: PCI device to query
|
||||
*
|
||||
* Returns mmrbc: maximum memory read count in bytes
|
||||
* or appropriate error value.
|
||||
* Returns mmrbc: maximum memory read count in bytes or appropriate error
|
||||
* value.
|
||||
*/
|
||||
int pcix_get_mmrbc(struct pci_dev *dev)
|
||||
{
|
||||
@ -5421,7 +5434,7 @@ EXPORT_SYMBOL(pcix_get_mmrbc);
|
||||
* @mmrbc: maximum memory read count in bytes
|
||||
* valid values are 512, 1024, 2048, 4096
|
||||
*
|
||||
* If possible sets maximum memory read byte count, some bridges have erratas
|
||||
* If possible sets maximum memory read byte count, some bridges have errata
|
||||
* that prevent this.
|
||||
*/
|
||||
int pcix_set_mmrbc(struct pci_dev *dev, int mmrbc)
|
||||
@ -5466,8 +5479,7 @@ EXPORT_SYMBOL(pcix_set_mmrbc);
|
||||
* pcie_get_readrq - get PCI Express read request size
|
||||
* @dev: PCI device to query
|
||||
*
|
||||
* Returns maximum memory read request in bytes
|
||||
* or appropriate error value.
|
||||
* Returns maximum memory read request in bytes or appropriate error value.
|
||||
*/
|
||||
int pcie_get_readrq(struct pci_dev *dev)
|
||||
{
|
||||
@ -5495,10 +5507,9 @@ int pcie_set_readrq(struct pci_dev *dev, int rq)
|
||||
return -EINVAL;
|
||||
|
||||
/*
|
||||
* If using the "performance" PCIe config, we clamp the
|
||||
* read rq size to the max packet size to prevent the
|
||||
* host bridge generating requests larger than we can
|
||||
* cope with
|
||||
* If using the "performance" PCIe config, we clamp the read rq
|
||||
* size to the max packet size to keep the host bridge from
|
||||
* generating requests larger than we can cope with.
|
||||
*/
|
||||
if (pcie_bus_config == PCIE_BUS_PERFORMANCE) {
|
||||
int mps = pcie_get_mps(dev);
|
||||
@ -6144,6 +6155,7 @@ static int of_pci_bus_find_domain_nr(struct device *parent)
|
||||
|
||||
if (parent)
|
||||
domain = of_get_pci_domain_nr(parent->of_node);
|
||||
|
||||
/*
|
||||
* Check DT domain and use_dt_domains values.
|
||||
*
|
||||
|
||||
Loading…
Reference in New Issue
Block a user