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