From 6ff67fe45fcb69a278f5aaeeb5eebff3b7bb6dc2 Mon Sep 17 00:00:00 2001 From: Vladimir Serbinenko Date: Wed, 29 Jan 2014 23:43:25 +0100 Subject: [PATCH 051/198] * grub-core/disk/ahci.c: Do not enable I/O decoding and keep enabling busmaster for the end. --- ChangeLog | 5 +++++ grub-core/disk/ahci.c | 10 ++++++---- 2 files changed, 11 insertions(+), 4 deletions(-) diff --git a/ChangeLog b/ChangeLog index 9837c7f..51eba95 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,5 +1,10 @@ 2014-01-29 Vladimir Serbinenko + * grub-core/disk/ahci.c: Do not enable I/O decoding and keep + enabling busmaster for the end. + +2014-01-29 Vladimir Serbinenko + * util/grub-mkfont.c: Downgrade warnings about unhandled features to debug. diff --git a/grub-core/disk/ahci.c b/grub-core/disk/ahci.c index 0b13fb8..18c1327 100644 --- a/grub-core/disk/ahci.c +++ b/grub-core/disk/ahci.c @@ -194,10 +194,8 @@ grub_ahci_pciinit (grub_pci_device_t dev, return 0; addr = grub_pci_make_address (dev, GRUB_PCI_REG_COMMAND); - grub_pci_write_word (addr, grub_pci_read_word (addr) | - GRUB_PCI_COMMAND_IO_ENABLED - | GRUB_PCI_COMMAND_MEM_ENABLED - | GRUB_PCI_COMMAND_BUS_MASTER); + grub_pci_write_word (addr, grub_pci_read_word (addr) + | GRUB_PCI_COMMAND_MEM_ENABLED); hba = grub_pci_device_map_range (dev, bar & GRUB_PCI_ADDR_MEM_MASK, sizeof (hba)); @@ -621,6 +619,10 @@ grub_ahci_pciinit (grub_pci_device_t dev, if (adevs[i] && (adevs[i]->hba->ports[adevs[i]->port].sig >> 16) == 0xeb14) adevs[i]->atapi = 1; + addr = grub_pci_make_address (dev, GRUB_PCI_REG_COMMAND); + grub_pci_write_word (addr, grub_pci_read_word (addr) + | GRUB_PCI_COMMAND_BUS_MASTER); + for (i = 0; i < nports; i++) if (adevs[i]) { -- 2.7.4