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From 26a5ebad4ca95370319d630f323b5a982cc113c0 Mon Sep 17 00:00:00 2001
From: Timothy Pearson <kb9vqf@pearsoncomputing.net>
Date: Mon, 22 Jun 2015 02:56:10 -0500
Subject: [PATCH 069/146] southbridge/amd/sb700: Fix SATA port 4/5 drive
detection
---
src/southbridge/amd/sb700/sata.c | 42 ++++++++++++++++++++++++++++++++++----
1 file changed, 38 insertions(+), 4 deletions(-)
diff --git a/src/southbridge/amd/sb700/sata.c b/src/southbridge/amd/sb700/sata.c
index f27ec49..da6f107 100644
--- a/src/southbridge/amd/sb700/sata.c
+++ b/src/southbridge/amd/sb700/sata.c
@@ -126,6 +126,8 @@ static void sata_init(struct device *dev)
uint8_t port_count;
uint8_t max_port_count;
uint8_t hba_reset_count;
+ uint8_t ide_io_enabled;
+ uint8_t ide_legacy_io_enabled;
sata_ahci_mode = 0;
if (get_option(&nvram, "sata_ahci_mode") == CB_SUCCESS)
@@ -170,15 +172,27 @@ retry_init:
}
}
- /* Disable combined mode */
+ /* Enable combined mode */
byte = pci_read_config8(sm_dev, 0xad);
- byte &= ~(1 << 3);
+ byte |= (1 << 3);
pci_write_config8(sm_dev, 0xad, byte);
device_t ide_dev;
/* IDE Device */
ide_dev = dev_find_slot(0, PCI_DEVFN(0x14, 1));
+ /* Disable legacy IDE mode (enable PATA_BAR0/2) */
+ byte = pci_read_config8(ide_dev, 0x09);
+ ide_legacy_io_enabled = !(byte & 0x1);
+ byte |= 0x1;
+ pci_write_config8(ide_dev, 0x09, byte);
+
+ /* Enable IDE I/O access (enable PATA_BAR0/2) */
+ byte = pci_read_config8(ide_dev, 0x04);
+ ide_io_enabled = byte & 0x1;
+ byte |= 0x1;
+ pci_write_config8(ide_dev, 0x04, byte);
+
/* RPR 7.2 SATA Initialization */
/* Set the interrupt Mapping to INTG# */
byte = pci_read_config8(sm_dev, 0xaf);
@@ -425,7 +439,8 @@ retry_init:
/* Disable SATA controller */
byte = pci_read_config8(sm_dev, 0xad);
- byte &= ~(0x1);
+ byte &= ~(1 << 0);
+ byte &= ~(1 << 3);
pci_write_config8(sm_dev, 0xad, byte);
mdelay(100);
@@ -460,8 +475,27 @@ retry_init:
}
}
+ /* Restore IDE I/O access */
+ if (!ide_io_enabled) {
+ byte = pci_read_config8(ide_dev, 0x04);
+ byte &= ~0x1;
+ pci_write_config8(ide_dev, 0x04, byte);
+ }
+
+ /* Re-enable legacy IDE mode */
+ if (ide_legacy_io_enabled) {
+ byte = pci_read_config8(ide_dev, 0x09);
+ byte &= ~0x1;
+ pci_write_config8(ide_dev, 0x09, byte);
+ }
+
/* Below is CIM InitSataLateFar */
- if (!sata_ahci_mode) {
+ if (sata_ahci_mode) {
+ /* Disable combined mode */
+ byte = pci_read_config8(sm_dev, 0xad);
+ byte &= ~(1 << 3);
+ pci_write_config8(sm_dev, 0xad, byte);
+ } else {
/* Enable interrupts from the HBA */
byte = read8(sata_bar5 + 0x4);
byte |= 1 << 1;
--
1.7.9.5
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