From 2baad5f96b498812626eadb6f6af3eb41d8656a3 Mon Sep 17 00:00:00 2001 From: Adrian Bunk Date: Wed, 13 Feb 2008 23:30:12 +0200 Subject: PCI: #if 0 pci_assign_resource_fixed() An unused function that bloated the kernel only when CONFIG_EMBEDDED was enabled... Signed-off-by: Adrian Bunk Signed-off-by: Greg Kroah-Hartman --- include/linux/pci.h | 1 - 1 file changed, 1 deletion(-) (limited to 'include') diff --git a/include/linux/pci.h b/include/linux/pci.h index ea760e519c4..3a2b9fbdb37 100644 --- a/include/linux/pci.h +++ b/include/linux/pci.h @@ -601,7 +601,6 @@ int pcie_get_readrq(struct pci_dev *dev); int pcie_set_readrq(struct pci_dev *dev, int rq); void pci_update_resource(struct pci_dev *dev, struct resource *res, int resno); int __must_check pci_assign_resource(struct pci_dev *dev, int i); -int __must_check pci_assign_resource_fixed(struct pci_dev *dev, int i); int pci_select_bars(struct pci_dev *dev, unsigned long flags); /* ROM control related routines */ -- cgit v1.2.3 From 448432c4b8e2e3189177d6dbd16b8a8d83c5c11c Mon Sep 17 00:00:00 2001 From: Greg Kroah-Hartman Date: Tue, 12 Feb 2008 13:36:20 -0800 Subject: PCI: remove pci_find_present No one is using this function anymore for quite some time, so remove it. Everyone calls pci_dev_present() instead anyway... Signed-off-by: Greg Kroah-Hartman --- include/linux/pci.h | 2 -- 1 file changed, 2 deletions(-) (limited to 'include') diff --git a/include/linux/pci.h b/include/linux/pci.h index 3a2b9fbdb37..b39f2abbea1 100644 --- a/include/linux/pci.h +++ b/include/linux/pci.h @@ -527,7 +527,6 @@ struct pci_dev *pci_get_slot(struct pci_bus *bus, unsigned int devfn); struct pci_dev *pci_get_bus_and_slot(unsigned int bus, unsigned int devfn); struct pci_dev *pci_get_class(unsigned int class, struct pci_dev *from); int pci_dev_present(const struct pci_device_id *ids); -const struct pci_device_id *pci_find_present(const struct pci_device_id *ids); int pci_bus_read_config_byte(struct pci_bus *bus, unsigned int devfn, int where, u8 *val); @@ -816,7 +815,6 @@ static inline struct pci_dev *pci_get_class(unsigned int class, #define pci_dev_present(ids) (0) #define no_pci_devices() (1) -#define pci_find_present(ids) (NULL) #define pci_dev_put(dev) do { } while (0) static inline void pci_set_master(struct pci_dev *dev) -- cgit v1.2.3 From 34220909a26b7f7cfc71e88ce01856c2563fe1d4 Mon Sep 17 00:00:00 2001 From: Greg Kroah-Hartman Date: Wed, 13 Feb 2008 09:32:03 -0800 Subject: PCI: remove pci_get_device_reverse This removes the pci_get_device_reverse function as there should not be any need to walk pci devices backwards anymore. All users of this call are now gone from the tree, so it is safe to remove it. Signed-off-by: Greg Kroah-Hartman --- include/linux/pci.h | 10 ---------- 1 file changed, 10 deletions(-) (limited to 'include') diff --git a/include/linux/pci.h b/include/linux/pci.h index b39f2abbea1..39ecf48ffa3 100644 --- a/include/linux/pci.h +++ b/include/linux/pci.h @@ -517,9 +517,6 @@ struct pci_bus *pci_find_next_bus(const struct pci_bus *from); struct pci_dev *pci_get_device(unsigned int vendor, unsigned int device, struct pci_dev *from); -struct pci_dev *pci_get_device_reverse(unsigned int vendor, unsigned int device, - struct pci_dev *from); - struct pci_dev *pci_get_subsys(unsigned int vendor, unsigned int device, unsigned int ss_vendor, unsigned int ss_device, struct pci_dev *from); @@ -791,13 +788,6 @@ static inline struct pci_dev *pci_get_device(unsigned int vendor, return NULL; } -static inline struct pci_dev *pci_get_device_reverse(unsigned int vendor, - unsigned int device, - struct pci_dev *from) -{ - return NULL; -} - static inline struct pci_dev *pci_get_subsys(unsigned int vendor, unsigned int device, unsigned int ss_vendor, -- cgit v1.2.3 From 95247b57ed844511a212265b45cf9a919753aea1 Mon Sep 17 00:00:00 2001 From: Greg Kroah-Hartman Date: Wed, 13 Feb 2008 11:03:58 -0800 Subject: PCI: clean up search.c a lot This cleans up the search.c file, now using the pci list of devices that are created for the driver core, instead of relying on our separate list of devices. It's better to use the functions already created for this kind of thing, instead of rolling our own all the time. This work is done in anticipation of getting rid of that second list of pci devices all together. And it ends up saving code, always a nice benefit. This also removes one compiler warning for when CONFIG_PCI_LEGACY is enabled as we no longer internally use the deprecated functions anymore. Signed-off-by: Greg Kroah-Hartman --- include/linux/pci.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'include') diff --git a/include/linux/pci.h b/include/linux/pci.h index 39ecf48ffa3..5f79c72bae6 100644 --- a/include/linux/pci.h +++ b/include/linux/pci.h @@ -519,7 +519,7 @@ struct pci_dev *pci_get_device(unsigned int vendor, unsigned int device, struct pci_dev *from); struct pci_dev *pci_get_subsys(unsigned int vendor, unsigned int device, unsigned int ss_vendor, unsigned int ss_device, - struct pci_dev *from); + const struct pci_dev *from); struct pci_dev *pci_get_slot(struct pci_bus *bus, unsigned int devfn); struct pci_dev *pci_get_bus_and_slot(unsigned int bus, unsigned int devfn); struct pci_dev *pci_get_class(unsigned int class, struct pci_dev *from); @@ -792,7 +792,7 @@ static inline struct pci_dev *pci_get_subsys(unsigned int vendor, unsigned int device, unsigned int ss_vendor, unsigned int ss_device, - struct pci_dev *from) + const struct pci_dev *from) { return NULL; } -- cgit v1.2.3 From 1ba6ab11d8fbd8d29afec4e39236e1255ae0339a Mon Sep 17 00:00:00 2001 From: Greg Kroah-Hartman Date: Wed, 13 Feb 2008 15:06:38 -0800 Subject: PCI: remove initial bios sort of PCI devices on x86 We currently keep 2 lists of PCI devices in the system, one in the driver core, and one all on its own. This second list is sorted at boot time, in "BIOS" order, to try to remain compatible with older kernels (2.2 and earlier days). There was also a "nosort" option to turn this sorting off, to remain compatible with even older kernel versions, but that just ends up being what we have been doing from 2.5 days... Unfortunately, the second list of devices is not really ever used to determine the probing order of PCI devices or drivers[1]. That is done using the driver core list instead. This change happened back in the early 2.5 days. Relying on BIOS ording for the binding of drivers to specific device names is problematic for many reasons, and userspace tools like udev exist to properly name devices in a persistant manner if that is needed, no reliance on the BIOS is needed. Matt Domsch and others at Dell noticed this back in 2006, and added a boot option to sort the PCI device lists (both of them) in a breadth-first manner to help remain compatible with the 2.4 order, if needed for any reason. This option is not going away, as some systems rely on them. This patch removes the sorting of the internal PCI device list in "BIOS" mode, as it's not needed at all anymore, and hasn't for many years. I've also removed the PCI flags for this from some other arches that for some reason defined them, but never used them. This should not change the ordering of any drivers or device probing. [1] The old-style pci_get_device and pci_find_device() still used this sorting order, but there are very few drivers that use these functions, as they are deprecated for use in this manner. If for some reason, a driver rely on the order and uses these functions, the breadth-first boot option will resolve any problem. Cc: Matt Domsch Signed-off-by: Greg Kroah-Hartman --- include/asm-sh/mpc1211/pci.h | 2 -- 1 file changed, 2 deletions(-) (limited to 'include') diff --git a/include/asm-sh/mpc1211/pci.h b/include/asm-sh/mpc1211/pci.h index 5d3712c3a70..d9162c5ed76 100644 --- a/include/asm-sh/mpc1211/pci.h +++ b/include/asm-sh/mpc1211/pci.h @@ -24,8 +24,6 @@ #define PCI_PROBE_BIOS 1 #define PCI_PROBE_CONF1 2 #define PCI_PROBE_CONF2 4 -#define PCI_NO_SORT 0x100 -#define PCI_BIOS_SORT 0x200 #define PCI_NO_CHECKS 0x400 #define PCI_ASSIGN_ROMS 0x1000 #define PCI_BIOS_IRQ_SCAN 0x2000 -- cgit v1.2.3 From 8a1bc9013a03d41a0e36ee413bb6f97281b30bd1 Mon Sep 17 00:00:00 2001 From: Greg Kroah-Hartman Date: Thu, 14 Feb 2008 14:56:56 -0800 Subject: PCI: add is_added flag to struct pci_dev This lets us check if the device is really added to the driver core or not, which is what we need when walking some of the bus lists. The flag is there in anticipation of getting rid of the other PCI device list, which is what we used to check in this situation. Signed-off-by: Greg Kroah-Hartman --- include/linux/pci.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include') diff --git a/include/linux/pci.h b/include/linux/pci.h index 5f79c72bae6..5e6d0f413fb 100644 --- a/include/linux/pci.h +++ b/include/linux/pci.h @@ -181,6 +181,7 @@ struct pci_dev { unsigned int transparent:1; /* Transparent PCI bridge */ unsigned int multifunction:1;/* Part of multi-function device */ /* keep track of device state */ + unsigned int is_added:1; unsigned int is_busmaster:1; /* device is busmaster */ unsigned int no_msi:1; /* device may not use msi */ unsigned int no_d1d2:1; /* only allow d0 or d3 */ -- cgit v1.2.3 From 5ff580c10ec06fd296bd23d4570c1a95194094a0 Mon Sep 17 00:00:00 2001 From: Greg Kroah-Hartman Date: Thu, 14 Feb 2008 14:56:56 -0800 Subject: PCI: remove global list of PCI devices This patch finally removes the global list of PCI devices. We are relying entirely on the list held in the driver core now, and do not need a separate "shadow" list as no one uses it. Signed-off-by: Greg Kroah-Hartman --- include/linux/pci.h | 3 --- 1 file changed, 3 deletions(-) (limited to 'include') diff --git a/include/linux/pci.h b/include/linux/pci.h index 5e6d0f413fb..3b8a4e17052 100644 --- a/include/linux/pci.h +++ b/include/linux/pci.h @@ -132,7 +132,6 @@ struct pci_cap_saved_state { * The pci_dev structure is used to describe PCI devices. */ struct pci_dev { - struct list_head global_list; /* node in list of all PCI devices */ struct list_head bus_list; /* node in per-bus list */ struct pci_bus *bus; /* bus this device is on */ struct pci_bus *subordinate; /* bus this device bridges to */ @@ -206,7 +205,6 @@ struct pci_dev { extern struct pci_dev *alloc_pci_dev(void); -#define pci_dev_g(n) list_entry(n, struct pci_dev, global_list) #define pci_dev_b(n) list_entry(n, struct pci_dev, bus_list) #define to_pci_dev(n) container_of(n, struct pci_dev, dev) #define for_each_pci_dev(d) while ((d = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, d)) != NULL) @@ -450,7 +448,6 @@ extern struct bus_type pci_bus_type; /* Do NOT directly access these two variables, unless you are arch specific pci * code, or pci core code. */ extern struct list_head pci_root_buses; /* list of all known PCI buses */ -extern struct list_head pci_devices; /* list of all devices */ /* Some device drivers need know if pci is initiated */ extern int no_pci_devices(void); -- cgit v1.2.3 From 21c6847406784fde73ad5ea47c2c3434714d58d1 Mon Sep 17 00:00:00 2001 From: Adrian Bunk Date: Mon, 4 Feb 2008 23:50:11 -0800 Subject: PCI: #if 0 pci_cleanup_aer_correct_error_status() #if 0 the no longer used pci_cleanup_aer_correct_error_status(). Signed-off-by: Adrian Bunk Cc: Stephen Hemminger Signed-off-by: Andrew Morton Signed-off-by: Greg Kroah-Hartman --- include/linux/aer.h | 5 ----- 1 file changed, 5 deletions(-) (limited to 'include') diff --git a/include/linux/aer.h b/include/linux/aer.h index bcf236d825e..f2518141de8 100644 --- a/include/linux/aer.h +++ b/include/linux/aer.h @@ -13,7 +13,6 @@ extern int pci_enable_pcie_error_reporting(struct pci_dev *dev); extern int pci_find_aer_capability(struct pci_dev *dev); extern int pci_disable_pcie_error_reporting(struct pci_dev *dev); extern int pci_cleanup_aer_uncorrect_error_status(struct pci_dev *dev); -extern int pci_cleanup_aer_correct_error_status(struct pci_dev *dev); #else static inline int pci_enable_pcie_error_reporting(struct pci_dev *dev) { @@ -31,10 +30,6 @@ static inline int pci_cleanup_aer_uncorrect_error_status(struct pci_dev *dev) { return -EINVAL; } -static inline int pci_cleanup_aer_correct_error_status(struct pci_dev *dev) -{ - return -EINVAL; -} #endif #endif //_AER_H_ -- cgit v1.2.3 From 7d715a6c1ae5785d00fb9a876b5abdfc43abc44b Mon Sep 17 00:00:00 2001 From: Shaohua Li Date: Mon, 25 Feb 2008 09:46:41 +0800 Subject: PCI: add PCI Express ASPM support PCI Express ASPM defines a protocol for PCI Express components in the D0 state to reduce Link power by placing their Links into a low power state and instructing the other end of the Link to do likewise. This capability allows hardware-autonomous, dynamic Link power reduction beyond what is achievable by software-only controlled power management. However, The device should be configured by software appropriately. Enabling ASPM will save power, but will introduce device latency. This patch adds ASPM support in Linux. It introduces a global policy for ASPM, a sysfs file /sys/module/pcie_aspm/parameters/policy can control it. The interface can be used as a boot option too. Currently we have below setting: -default, BIOS default setting -powersave, highest power saving mode, enable all available ASPM state and clock power management -performance, highest performance, disable ASPM and clock power management By default, the 'default' policy is used currently. In my test, power difference between powersave mode and performance mode is about 1.3w in a system with 3 PCIE links. Note: some devices might not work well with aspm, either because chipset issue or device issue. The patch provide API (pci_disable_link_state), driver can disable ASPM for specific device. Signed-off-by: Shaohua Li Signed-off-by: Greg Kroah-Hartman --- include/linux/pci-aspm.h | 56 ++++++++++++++++++++++++++++++++++++++++++++++++ include/linux/pci.h | 5 +++++ include/linux/pci_regs.h | 8 +++++++ 3 files changed, 69 insertions(+) create mode 100644 include/linux/pci-aspm.h (limited to 'include') diff --git a/include/linux/pci-aspm.h b/include/linux/pci-aspm.h new file mode 100644 index 00000000000..a1a1e618e99 --- /dev/null +++ b/include/linux/pci-aspm.h @@ -0,0 +1,56 @@ +/* + * aspm.h + * + * PCI Express ASPM defines and function prototypes + * + * Copyright (C) 2007 Intel Corp. + * Zhang Yanmin (yanmin.zhang@intel.com) + * Shaohua Li (shaohua.li@intel.com) + * + * For more information, please consult the following manuals (look at + * http://www.pcisig.com/ for how to get them): + * + * PCI Express Specification + */ + +#ifndef LINUX_ASPM_H +#define LINUX_ASPM_H + +#include + +#define PCIE_LINK_STATE_L0S 1 +#define PCIE_LINK_STATE_L1 2 +#define PCIE_LINK_STATE_CLKPM 4 + +#ifdef CONFIG_PCIEASPM +extern void pcie_aspm_init_link_state(struct pci_dev *pdev); +extern void pcie_aspm_exit_link_state(struct pci_dev *pdev); +extern void pcie_aspm_pm_state_change(struct pci_dev *pdev); +extern void pci_disable_link_state(struct pci_dev *pdev, int state); +#else +static inline void pcie_aspm_init_link_state(struct pci_dev *pdev) +{ +} +static inline void pcie_aspm_exit_link_state(struct pci_dev *pdev) +{ +} +static inline void pcie_aspm_pm_state_change(struct pci_dev *pdev) +{ +} +static inline void pci_disable_link_state(struct pci_dev *pdev, int state) +{ +} +#endif + +#ifdef CONFIG_PCIEASPM_DEBUG /* this depends on CONFIG_PCIEASPM */ +extern void pcie_aspm_create_sysfs_dev_files(struct pci_dev *pdev); +extern void pcie_aspm_remove_sysfs_dev_files(struct pci_dev *pdev); +#else +static inline void pcie_aspm_create_sysfs_dev_files(struct pci_dev *pdev) +{ +} +static inline void pcie_aspm_remove_sysfs_dev_files(struct pci_dev *pdev) +{ +} +#endif +#endif /* LINUX_ASPM_H */ diff --git a/include/linux/pci.h b/include/linux/pci.h index 3b8a4e17052..14bf3d236d1 100644 --- a/include/linux/pci.h +++ b/include/linux/pci.h @@ -128,6 +128,7 @@ struct pci_cap_saved_state { u32 data[0]; }; +struct pcie_link_state; /* * The pci_dev structure is used to describe PCI devices. */ @@ -164,6 +165,10 @@ struct pci_dev { this is D0-D3, D0 being fully functional, and D3 being off. */ +#ifdef CONFIG_PCIEASPM + struct pcie_link_state *link_state; /* ASPM link state. */ +#endif + pci_channel_state_t error_state; /* current connectivity state */ struct device dev; /* Generic device interface */ diff --git a/include/linux/pci_regs.h b/include/linux/pci_regs.h index c1914a8b94a..c0c1223c919 100644 --- a/include/linux/pci_regs.h +++ b/include/linux/pci_regs.h @@ -395,9 +395,17 @@ #define PCI_EXP_DEVSTA_AUXPD 0x10 /* AUX Power Detected */ #define PCI_EXP_DEVSTA_TRPND 0x20 /* Transactions Pending */ #define PCI_EXP_LNKCAP 12 /* Link Capabilities */ +#define PCI_EXP_LNKCAP_ASPMS 0xc00 /* ASPM Support */ +#define PCI_EXP_LNKCAP_L0SEL 0x7000 /* L0s Exit Latency */ +#define PCI_EXP_LNKCAP_L1EL 0x38000 /* L1 Exit Latency */ +#define PCI_EXP_LNKCAP_CLKPM 0x40000 /* L1 Clock Power Management */ #define PCI_EXP_LNKCTL 16 /* Link Control */ +#define PCI_EXP_LNKCTL_RL 0x20 /* Retrain Link */ +#define PCI_EXP_LNKCTL_CCC 0x40 /* Common Clock COnfiguration */ #define PCI_EXP_LNKCTL_CLKREQ_EN 0x100 /* Enable clkreq */ #define PCI_EXP_LNKSTA 18 /* Link Status */ +#define PCI_EXP_LNKSTA_LT 0x800 /* Link Training */ +#define PCI_EXP_LNKSTA_SLC 0x1000 /* Slot Clock Configuration */ #define PCI_EXP_SLTCAP 20 /* Slot Capabilities */ #define PCI_EXP_SLTCTL 24 /* Slot Control */ #define PCI_EXP_SLTSTA 26 /* Slot Status */ -- cgit v1.2.3 From 842de40d93e00a5c40a1a7f520a6fbe422994e99 Mon Sep 17 00:00:00 2001 From: Bjorn Helgaas Date: Tue, 4 Mar 2008 11:56:47 -0700 Subject: PCI: add generic pci_enable_resources() Each architecture has its own pcibios_enable_resources() implementation. These differ in many minor ways that have nothing to do with actual architectural differences. Follow-on patches will make most arches use this generic version instead. This version is based on powerpc, which seemed most up-to-date. The only functional difference from the x86 version is that this uses "!r->parent" to check for resource collisions instead of "!r->start && r->end". Signed-off-by: Bjorn Helgaas Acked-by: Benjamin Herrenschmidt Acked-by: David Howells Signed-off-by: Greg Kroah-Hartman --- include/linux/pci.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include') diff --git a/include/linux/pci.h b/include/linux/pci.h index 14bf3d236d1..e2f46b05cf8 100644 --- a/include/linux/pci.h +++ b/include/linux/pci.h @@ -624,6 +624,7 @@ int pci_claim_resource(struct pci_dev *, int); void pci_assign_unassigned_resources(void); void pdev_enable_device(struct pci_dev *); void pdev_sort_resources(struct pci_dev *, struct resource_list *); +int pci_enable_resources(struct pci_dev *, int mask); void pci_fixup_irqs(u8 (*)(struct pci_dev *, u8 *), int (*)(struct pci_dev *, u8, u8)); #define HAVE_PCI_REQ_REGIONS 2 -- cgit v1.2.3 From 94e6108803469a37ee1e3c92dafdd1d59298602f Mon Sep 17 00:00:00 2001 From: Ben Hutchings Date: Wed, 5 Mar 2008 16:52:39 +0000 Subject: PCI: Expose PCI VPD through sysfs Vital Product Data (VPD) may be exposed by PCI devices in several ways. It is generally unsafe to read this information through the existing interfaces to user-land because of stateful interfaces. This adds: - abstract operations for VPD access (struct pci_vpd_ops) - VPD state information in struct pci_dev (struct pci_vpd) - an implementation of the VPD access method specified in PCI 2.2 (in access.c) - a 'vpd' binary file in sysfs directories for PCI devices with VPD operations defined It adds a probe for PCI 2.2 VPD in pci_scan_device() and release of VPD state in pci_release_dev(). Signed-off-by: Ben Hutchings Signed-off-by: Greg Kroah-Hartman --- include/linux/pci.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'include') diff --git a/include/linux/pci.h b/include/linux/pci.h index e2f46b05cf8..292491324b0 100644 --- a/include/linux/pci.h +++ b/include/linux/pci.h @@ -20,6 +20,8 @@ /* Include the pci register defines */ #include +struct pci_vpd; + /* * The PCI interface treats multi-function devices as independent * devices. The slot/function address of each device is encoded @@ -206,6 +208,7 @@ struct pci_dev { #ifdef CONFIG_PCI_MSI struct list_head msi_list; #endif + struct pci_vpd *vpd; }; extern struct pci_dev *alloc_pci_dev(void); -- cgit v1.2.3 From 884525655d07fdee9245716b998ecdc45cdd8007 Mon Sep 17 00:00:00 2001 From: Ivan Kokshaysky Date: Sun, 30 Mar 2008 19:50:14 +0400 Subject: PCI: clean up resource alignment management Done per Linus' request and suggestions. Linus has explained that better than I'll be able to explain: On Thu, Mar 27, 2008 at 10:12:10AM -0700, Linus Torvalds wrote: > Actually, before we go any further, there might be a less intrusive > alternative: add just a couple of flags to the resource flags field (we > still have something like 8 unused bits on 32-bit), and use those to > implement a generic "resource_alignment()" routine. > > Two flags would do it: > > - IORESOURCE_SIZEALIGN: size indicates alignment (regular PCI device > resources) > > - IORESOURCE_STARTALIGN: start field is alignment (PCI bus resources > during probing) > > and then the case of both flags zero (or both bits set) would actually be > "invalid", and we would also clear the IORESOURCE_STARTALIGN flag when we > actually allocate the resource (so that we don't use the "start" field as > alignment incorrectly when it no longer indicates alignment). > > That wouldn't be totally generic, but it would have the nice property of > automatically at least add sanity checking for that whole "res->start has > the odd meaning of 'alignment' during probing" and remove the need for a > new field, and it would allow us to have a generic "resource_alignment()" > routine that just gets a resource pointer. Besides, I removed IORESOURCE_BUS_HAS_VGA flag which was unused for ages. Signed-off-by: Ivan Kokshaysky Cc: Linus Torvalds Cc: Gary Hade Signed-off-by: Greg Kroah-Hartman --- include/linux/ioport.h | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) (limited to 'include') diff --git a/include/linux/ioport.h b/include/linux/ioport.h index 605d237364d..d5d40a9f792 100644 --- a/include/linux/ioport.h +++ b/include/linux/ioport.h @@ -44,7 +44,9 @@ struct resource_list { #define IORESOURCE_CACHEABLE 0x00004000 #define IORESOURCE_RANGELENGTH 0x00008000 #define IORESOURCE_SHADOWABLE 0x00010000 -#define IORESOURCE_BUS_HAS_VGA 0x00080000 + +#define IORESOURCE_SIZEALIGN 0x00020000 /* size indicates alignment */ +#define IORESOURCE_STARTALIGN 0x00040000 /* start field is alignment */ #define IORESOURCE_DISABLED 0x10000000 #define IORESOURCE_UNSET 0x20000000 @@ -110,6 +112,7 @@ extern int allocate_resource(struct resource *root, struct resource *new, void *alignf_data); int adjust_resource(struct resource *res, resource_size_t start, resource_size_t size); +resource_size_t resource_alignment(struct resource *res); /* Convenience shorthand with allocation */ #define request_region(start,n,name) __request_region(&ioport_resource, (start), (n), (name)) -- cgit v1.2.3