Commit a88a3f88 authored by Jan Beulich's avatar Jan Beulich Committed by Stefano Stabellini
Browse files

xen/pt: add a few PCI config space field descriptions 



Since the next patch will turn all not explicitly described fields
read-only by default, those fields that have guest writable bits need
to be given explicit descriptors.

This is a preparatory patch for XSA-131.

Signed-off-by: default avatarJan Beulich <jbeulich@suse.com>
parent 0ad3393a

hw/xen/xen_pt_config_init.c

+28 −0
Original line number Diff line number Diff line
@@ -753,6 +753,15 @@ static XenPTRegInfo xen_pt_emu_reg_vpd[] = { 
        .u.b.read   = xen_pt_byte_reg_read,

        .u.b.write  = xen_pt_byte_reg_write,

    },

    {

        .offset     = PCI_VPD_ADDR,

        .size       = 2,

        .ro_mask    = 0x0003,

        .emu_mask   = 0x0003,

        .init       = xen_pt_common_reg_init,

        .u.w.read   = xen_pt_word_reg_read,

        .u.w.write  = xen_pt_word_reg_write,

    },

    {

        .size = 0,

    },
@@ -889,6 +898,16 @@ static XenPTRegInfo xen_pt_emu_reg_pcie[] = { 
        .u.w.read   = xen_pt_word_reg_read,

        .u.w.write  = xen_pt_word_reg_write,

    },

    /* Device Status reg */

    {

        .offset     = PCI_EXP_DEVSTA,

        .size       = 2,

        .res_mask   = 0xFFC0,

        .ro_mask    = 0x0030,

        .init       = xen_pt_common_reg_init,

        .u.w.read   = xen_pt_word_reg_read,

        .u.w.write  = xen_pt_word_reg_write,

    },

    /* Link Control reg */

    {

        .offset     = PCI_EXP_LNKCTL,
@@ -900,6 +919,15 @@ static XenPTRegInfo xen_pt_emu_reg_pcie[] = { 
        .u.w.read   = xen_pt_word_reg_read,

        .u.w.write  = xen_pt_word_reg_write,

    },

    /* Link Status reg */

    {

        .offset     = PCI_EXP_LNKSTA,

        .size       = 2,

        .ro_mask    = 0x3FFF,

        .init       = xen_pt_common_reg_init,

        .u.w.read   = xen_pt_word_reg_read,

        .u.w.write  = xen_pt_word_reg_write,

    },

    /* Device Control 2 reg */

    {

        .offset     = 0x28,