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device: Move MSI related data into a struct

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The only unconditional part of MSI data in struct device is the irqdomain
pointer. Everything else can be allocated on demand. Create a data
structure and move the irqdomain pointer into it. The other MSI specific
parts are going to be removed from struct device in later steps.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Michael Kelley <mikelley@microsoft.com>
Tested-by: Nishanth Menon <nm@ti.com>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Link: https://lore.kernel.org/r/20211210221813.617178827@linutronix.de
This commit is contained in:
Thomas Gleixner
2021-12-10 23:18:54 +01:00
parent ed1533b581
commit 34fff62827
7 changed files with 29 additions and 21 deletions
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20
include/linux/device.h
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@@ -371,6 +371,16 @@ struct dev_links_info {
enum dl_dev_state status;
};
/**
* struct dev_msi_info - Device data related to MSI
* @domain: The MSI interrupt domain associated to the device
*/
struct dev_msi_info {
#ifdef CONFIG_GENERIC_MSI_IRQ_DOMAIN
struct irq_domain *domain;
#endif
};
/**
* struct device - The basic device structure
* @parent: The device's "parent" device, the device to which it is attached.
@@ -407,8 +417,8 @@ struct dev_links_info {
* @em_pd: device's energy model performance domain
* @pins: For device pin management.
* See Documentation/driver-api/pin-control.rst for details.
* @msi: MSI related data
* @msi_list: Hosts MSI descriptors
* @msi_domain: The generic MSI domain this device is using.
* @numa_node: NUMA node this device is close to.
* @dma_ops: DMA mapping operations for this device.
* @dma_mask: Dma mask (if dma'ble device).
@@ -500,12 +510,10 @@ struct device {
struct em_perf_domain *em_pd;
#endif
#ifdef CONFIG_GENERIC_MSI_IRQ_DOMAIN
struct irq_domain *msi_domain;
#endif
#ifdef CONFIG_PINCTRL
struct dev_pin_info *pins;
#endif
struct dev_msi_info msi;
#ifdef CONFIG_GENERIC_MSI_IRQ
struct list_head msi_list;
#endif
@@ -666,7 +674,7 @@ static inline void set_dev_node(struct device *dev, int node)
static inline struct irq_domain *dev_get_msi_domain(const struct device *dev)
{
#ifdef CONFIG_GENERIC_MSI_IRQ_DOMAIN
return dev->msi_domain;
return dev->msi.domain;
#else
return NULL;
#endif
@@ -675,7 +683,7 @@ static inline struct irq_domain *dev_get_msi_domain(const struct device *dev)
static inline void dev_set_msi_domain(struct device *dev, struct irq_domain *d)
{
#ifdef CONFIG_GENERIC_MSI_IRQ_DOMAIN
dev->msi_domain = d;
dev->msi.domain = d;
#endif
}