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Date: Mon, 07 May 2007 23:52:22 +0200
From: Brice Goglin <brice@...i.com>
To: Jeff Garzik <jeff@...zik.org>
CC: netdev@...r.kernel.org
Subject: [PATCH 6/6] myri10ge: replace the chipset whitelist with firmware
autodetection
Remove the aligned-completion whitelist, and replace it by using the 1.4.16
firmware's auto-detection features to choose which firmware to load.
The driver now loads the aligned firmware, performs a MXGEFW_CMD_UNALIGNED_TEST,
and falls back to using the unaligned firmware if:
- The firmware is too old (ie, MXGEFW_CMD_UNALIGNED_TEST is an unknown command).
- The MXGEFW_CMD_UNALIGNED_TEST returns MXGEFW_CMD_ERROR_UNALIGNED, meaning
that it has seen an unaligned completion during the DMA test.
Signed-off-by: Brice Goglin <brice@...i.com>
---
drivers/net/myri10ge/myri10ge.c | 121 +++++++++++++++++++++-------------------
1 file changed, 65 insertions(+), 56 deletions(-)
Index: linux-git/drivers/net/myri10ge/myri10ge.c
===================================================================
--- linux-git.orig/drivers/net/myri10ge/myri10ge.c 2007-05-07 23:21:52.000000000 +0200
+++ linux-git/drivers/net/myri10ge/myri10ge.c 2007-05-07 23:21:59.000000000 +0200
@@ -360,6 +360,8 @@
return 0;
} else if (result == MXGEFW_CMD_UNKNOWN) {
return -ENOSYS;
+ } else if (result == MXGEFW_CMD_ERROR_UNALIGNED) {
+ return -E2BIG;
} else {
dev_err(&mgp->pdev->dev,
"command %d failed, result = %d\n",
@@ -2488,8 +2490,6 @@
err_cap |= PCI_ERR_CAP_ECRC_GENE;
pci_write_config_dword(bridge, cap + PCI_ERR_CAP, err_cap);
dev_info(dev, "Enabled ECRC on upstream bridge %s\n", pci_name(bridge));
- mgp->tx.boundary = 4096;
- mgp->fw_name = myri10ge_fw_aligned;
}
/*
@@ -2511,22 +2511,70 @@
* firmware image, and set tx.boundary to 4KB.
*/
-#define PCI_DEVICE_ID_INTEL_E5000_PCIE23 0x25f7
-#define PCI_DEVICE_ID_INTEL_E5000_PCIE47 0x25fa
-#define PCI_DEVICE_ID_INTEL_6300ESB_PCIEE1 0x3510
-#define PCI_DEVICE_ID_INTEL_6300ESB_PCIEE4 0x351b
-#define PCI_DEVICE_ID_INTEL_E3000_PCIE 0x2779
-#define PCI_DEVICE_ID_INTEL_E3010_PCIE 0x277a
-#define PCI_DEVICE_ID_SERVERWORKS_HT2100_PCIE_FIRST 0x140
-#define PCI_DEVICE_ID_SERVERWORKS_HT2100_PCIE_LAST 0x142
-
-static void myri10ge_select_firmware(struct myri10ge_priv *mgp)
+static void myri10ge_firmware_probe(struct myri10ge_priv *mgp)
{
- struct pci_dev *bridge = mgp->pdev->bus->self;
+ struct pci_dev *pdev = mgp->pdev;
+ struct device *dev = &pdev->dev;
+ int cap, status;
+ u16 val;
+
+ mgp->tx.boundary = 4096;
+ /*
+ * Verify the max read request size was set to 4KB
+ * before trying the test with 4KB.
+ */
+ cap = pci_find_capability(pdev, PCI_CAP_ID_EXP);
+ if (cap < 64) {
+ dev_err(dev, "Bad PCI_CAP_ID_EXP location %d\n", cap);
+ goto abort;
+ }
+ status = pci_read_config_word(pdev, cap + PCI_EXP_DEVCTL, &val);
+ if (status != 0) {
+ dev_err(dev, "Couldn't read max read req size: %d\n", status);
+ goto abort;
+ }
+ if ((val & (5 << 12)) != (5 << 12)) {
+ dev_warn(dev, "Max Read Request size != 4096 (0x%x)\n", val);
+ mgp->tx.boundary = 2048;
+ }
+ /*
+ * load the optimized firmware (which assumes aligned PCIe
+ * completions) in order to see if it works on this host.
+ */
+ mgp->fw_name = myri10ge_fw_aligned;
+ status = myri10ge_load_firmware(mgp);
+ if (status != 0) {
+ goto abort;
+ }
+
+ /*
+ * Enable ECRC if possible
+ */
+ myri10ge_enable_ecrc(mgp);
+ /*
+ * Run a DMA test which watches for unaligned completions and
+ * aborts on the first one seen.
+ */
+
+ status = myri10ge_dma_test(mgp, MXGEFW_CMD_UNALIGNED_TEST);
+ if (status == 0)
+ return; /* keep the aligned firmware */
+
+ if (status != -E2BIG)
+ dev_warn(dev, "DMA test failed: %d\n", status);
+ if (status == -ENOSYS)
+ dev_warn(dev, "Falling back to ethp! "
+ "Please install up to date fw\n");
+abort:
+ /* fall back to using the unaligned firmware */
mgp->tx.boundary = 2048;
mgp->fw_name = myri10ge_fw_unaligned;
+}
+
+static void myri10ge_select_firmware(struct myri10ge_priv *mgp)
+{
if (myri10ge_force_firmware == 0) {
int link_width, exp_cap;
u16 lnk;
@@ -2535,8 +2583,6 @@
pci_read_config_word(mgp->pdev, exp_cap + PCI_EXP_LNKSTA, &lnk);
link_width = (lnk >> 4) & 0x3f;
- myri10ge_enable_ecrc(mgp);
-
/* Check to see if Link is less than 8 or if the
* upstream bridge is known to provide aligned
* completions */
@@ -2545,46 +2591,8 @@
link_width);
mgp->tx.boundary = 4096;
mgp->fw_name = myri10ge_fw_aligned;
- } else if (bridge &&
- /* ServerWorks HT2000/HT1000 */
- ((bridge->vendor == PCI_VENDOR_ID_SERVERWORKS
- && bridge->device ==
- PCI_DEVICE_ID_SERVERWORKS_HT2000_PCIE)
- /* ServerWorks HT2100 */
- || (bridge->vendor == PCI_VENDOR_ID_SERVERWORKS
- && bridge->device >=
- PCI_DEVICE_ID_SERVERWORKS_HT2100_PCIE_FIRST
- && bridge->device <=
- PCI_DEVICE_ID_SERVERWORKS_HT2100_PCIE_LAST)
- /* All Intel E3000/E3010 PCIE ports */
- || (bridge->vendor == PCI_VENDOR_ID_INTEL
- && (bridge->device ==
- PCI_DEVICE_ID_INTEL_E3000_PCIE
- || bridge->device ==
- PCI_DEVICE_ID_INTEL_E3010_PCIE))
- /* All Intel 6310/6311/6321ESB PCIE ports */
- || (bridge->vendor == PCI_VENDOR_ID_INTEL
- && bridge->device >=
- PCI_DEVICE_ID_INTEL_6300ESB_PCIEE1
- && bridge->device <=
- PCI_DEVICE_ID_INTEL_6300ESB_PCIEE4)
- /* All Intel E5000 PCIE ports */
- || (bridge->vendor == PCI_VENDOR_ID_INTEL
- && bridge->device >=
- PCI_DEVICE_ID_INTEL_E5000_PCIE23
- && bridge->device <=
- PCI_DEVICE_ID_INTEL_E5000_PCIE47))) {
- dev_info(&mgp->pdev->dev,
- "Assuming aligned completions (0x%x:0x%x)\n",
- bridge->vendor, bridge->device);
- mgp->tx.boundary = 4096;
- mgp->fw_name = myri10ge_fw_aligned;
- } else if (bridge &&
- bridge->vendor == PCI_VENDOR_ID_SGI &&
- bridge->device == 0x4002 /* TIOCE pcie-port */ ) {
- /* this pcie bridge does not support 4K rdma request */
- mgp->tx.boundary = 2048;
- mgp->fw_name = myri10ge_fw_aligned;
+ } else {
+ myri10ge_firmware_probe(mgp);
}
} else {
if (myri10ge_force_firmware == 1) {
@@ -2858,7 +2866,6 @@
status = -ENODEV;
goto abort_with_netdev;
}
- myri10ge_select_firmware(mgp);
/* Find the vendor-specific cap so we can check
* the reboot register later on */
@@ -2952,6 +2959,8 @@
goto abort_with_ioremap;
memset(mgp->rx_done.entry, 0, bytes);
+ myri10ge_select_firmware(mgp);
+
status = myri10ge_load_firmware(mgp);
if (status != 0) {
dev_err(&pdev->dev, "failed to load firmware\n");
-
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