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Commit 825c423a authored by Kenji Kaneshige's avatar Kenji Kaneshige Committed by Jesse Barnes
Browse files

PCI hotplug: add support for 5.0G link speed 



Add support for PCI-E 5.0 GT/s in max_bus_speed and cur_bus_speed.

Reviewed-by: default avatarMatthew Wilcox <matthew@wil.cx>
Signed-off-by: default avatarKenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
Signed-off-by: default avatarJesse Barnes <jbarnes@virtuousgeek.org>
parent 6ed6a8dc

drivers/pci/hotplug/pci_hotplug_core.c

+1 −0
Original line number Diff line number Diff line
@@ -87,6 +87,7 @@ static char *pci_bus_speed_strings[] = { 
	"100 MHz PCIX 533",	/* 0x12 */

	"133 MHz PCIX 533",	/* 0x13 */

	"2.5 GT/s PCI-E",	/* 0x14 */

	"5.0 GT/s PCI-E",	/* 0x15 */

};



#ifdef CONFIG_HOTPLUG_PCI_CPCI

drivers/pci/hotplug/pciehp_hpc.c

+8 −2
Original line number Diff line number Diff line
@@ -693,7 +693,10 @@ static int hpc_get_max_lnk_speed(struct slot *slot, enum pci_bus_speed *value) 


	switch (lnk_cap & 0x000F) {

	case 1:

		lnk_speed = PCIE_2PT5GB;

		lnk_speed = PCIE_2_5GB;

		break;

	case 2:

		lnk_speed = PCIE_5_0GB;

		break;

	default:

		lnk_speed = PCIE_LNK_SPEED_UNKNOWN;
@@ -772,7 +775,10 @@ static int hpc_get_cur_lnk_speed(struct slot *slot, enum pci_bus_speed *value) 


	switch (lnk_status & PCI_EXP_LNKSTA_CLS) {

	case 1:

		lnk_speed = PCIE_2PT5GB;

		lnk_speed = PCIE_2_5GB;

		break;

	case 2:

		lnk_speed = PCIE_5_0GB;

		break;

	default:

		lnk_speed = PCIE_LNK_SPEED_UNKNOWN;

include/linux/pci_hotplug.h

+2 −1
Original line number Diff line number Diff line
@@ -62,7 +62,8 @@ enum pcie_link_width { 
};



enum pcie_link_speed {

	PCIE_2PT5GB		= 0x14,

	PCIE_2_5GB		= 0x14,

	PCIE_5_0GB		= 0x15,

	PCIE_LNK_SPEED_UNKNOWN	= 0xFF,

};