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Message-ID: <20070526230020.12210.90635.stgit@localhost.localdomain>
Date: Sat, 26 May 2007 16:00:20 -0700
From: divy@...lsio.com
To: jeff@...zik.org
Cc: netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
swise@...ngridcomputing.com
Subject: [PATCH 7/7] cxgb3 - TP SRAM update
From: Divy Le Ray <divy@...lsio.com>
The chip executes microcode present in internal RAM,
whose content is loaded from EEPROM on power cycle.
This patch allows an update of the microcode through PIO
without forcing a power cycle.
Signed-off-by: Divy Le Ray <divy@...lsio.com>
---
drivers/net/cxgb3/common.h | 28 +++++++++++++
drivers/net/cxgb3/cxgb3_main.c | 43 ++++++++++++++++++++
drivers/net/cxgb3/regs.h | 7 +++
drivers/net/cxgb3/t3_hw.c | 85 ++++++++++++++++++++++++++++++++++++++++
4 files changed, 163 insertions(+), 0 deletions(-)
diff --git a/drivers/net/cxgb3/common.h b/drivers/net/cxgb3/common.h
index 8d13796..1637800 100644
--- a/drivers/net/cxgb3/common.h
+++ b/drivers/net/cxgb3/common.h
@@ -101,6 +101,7 @@ enum {
TCB_SIZE = 128, /* TCB size */
NMTUS = 16, /* size of MTU table */
NCCTRL_WIN = 32, /* # of congestion control windows */
+ PROTO_SRAM_LINES = 128, /* size of TP sram */
};
#define MAX_RX_COALESCING_LEN 16224U
@@ -124,6 +125,30 @@ enum { /* adapter interrupt-maintaine
};
enum {
+ TP_VERSION_MAJOR = 1,
+ TP_VERSION_MINOR = 0,
+ TP_VERSION_MICRO = 44
+};
+
+#define S_TP_VERSION_MAJOR 16
+#define M_TP_VERSION_MAJOR 0xFF
+#define V_TP_VERSION_MAJOR(x) ((x) << S_TP_VERSION_MAJOR)
+#define G_TP_VERSION_MAJOR(x) \
+ (((x) >> S_TP_VERSION_MAJOR) & M_TP_VERSION_MAJOR)
+
+#define S_TP_VERSION_MINOR 8
+#define M_TP_VERSION_MINOR 0xFF
+#define V_TP_VERSION_MINOR(x) ((x) << S_TP_VERSION_MINOR)
+#define G_TP_VERSION_MINOR(x) \
+ (((x) >> S_TP_VERSION_MINOR) & M_TP_VERSION_MINOR)
+
+#define S_TP_VERSION_MICRO 0
+#define M_TP_VERSION_MICRO 0xFF
+#define V_TP_VERSION_MICRO(x) ((x) << S_TP_VERSION_MICRO)
+#define G_TP_VERSION_MICRO(x) \
+ (((x) >> S_TP_VERSION_MICRO) & M_TP_VERSION_MICRO)
+
+enum {
SGE_QSETS = 8, /* # of SGE Tx/Rx/RspQ sets */
SGE_RXQ_PER_SET = 2, /* # of Rx queues per set */
SGE_TXQ_PER_SET = 3 /* # of Tx queues per set */
@@ -654,6 +679,9 @@ const struct adapter_info *t3_get_adapte
int t3_seeprom_read(struct adapter *adapter, u32 addr, u32 *data);
int t3_seeprom_write(struct adapter *adapter, u32 addr, u32 data);
int t3_seeprom_wp(struct adapter *adapter, int enable);
+int t3_check_tpsram_version(struct adapter *adapter);
+int t3_check_tpsram(struct adapter *adapter, u8 *tp_ram, unsigned int size);
+int t3_set_proto_sram(struct adapter *adap, u8 *data);
int t3_read_flash(struct adapter *adapter, unsigned int addr,
unsigned int nwords, u32 *data, int byte_oriented);
int t3_load_fw(struct adapter *adapter, const u8 * fw_data, unsigned int size);
diff --git a/drivers/net/cxgb3/cxgb3_main.c b/drivers/net/cxgb3/cxgb3_main.c
index e0ef724..70ba719 100644
--- a/drivers/net/cxgb3/cxgb3_main.c
+++ b/drivers/net/cxgb3/cxgb3_main.c
@@ -2089,6 +2089,42 @@ static void cxgb_netpoll(struct net_devi
}
#endif
+#define TPSRAM_NAME "t3%c_protocol_sram-%d.%d.%d.bin"
+int update_tpsram(struct adapter *adap)
+{
+ const struct firmware *tpsram;
+ char buf[64];
+ struct device *dev = &adap->pdev->dev;
+ int ret;
+ char rev;
+
+ rev = adap->params.rev == T3_REV_B2 ? 'b' : 'a';
+
+ snprintf(buf, sizeof(buf), TPSRAM_NAME, rev,
+ TP_VERSION_MAJOR, TP_VERSION_MINOR, TP_VERSION_MICRO);
+
+ ret = request_firmware(&tpsram, buf, dev);
+ if (ret < 0) {
+ dev_err(dev, "could not load TP SRAM: unable to load %s\n",
+ buf);
+ return ret;
+ }
+
+ ret = t3_check_tpsram(adap, tpsram->data, tpsram->size);
+ if (ret)
+ goto release_tpsram;
+
+ ret = t3_set_proto_sram(adap, tpsram->data);
+ if (ret)
+ dev_err(dev, "loading protocol SRAM failed\n");
+
+release_tpsram:
+ release_firmware(tpsram);
+
+ return ret;
+}
+
+
/*
* Periodic accumulation of MAC statistics.
*/
@@ -2439,6 +2475,13 @@ static int __devinit init_one(struct pci
goto out_free_dev;
}
+ err = t3_check_tpsram_version(adapter);
+ if (err == -EINVAL)
+ err = update_tpsram(adapter);
+
+ if (err)
+ goto out_free_dev;
+
/*
* The card is now ready to go. If any errors occur during device
* registration we do not fail the whole card but rather proceed only
diff --git a/drivers/net/cxgb3/regs.h b/drivers/net/cxgb3/regs.h
index 02f8731..aa80313 100644
--- a/drivers/net/cxgb3/regs.h
+++ b/drivers/net/cxgb3/regs.h
@@ -1218,6 +1218,13 @@
#define A_TP_PROXY_FLOW_CNTL 0x4b0
+#define A_TP_EMBED_OP_FIELD0 0x4e8
+#define A_TP_EMBED_OP_FIELD1 0x4ec
+#define A_TP_EMBED_OP_FIELD2 0x4f0
+#define A_TP_EMBED_OP_FIELD3 0x4f4
+#define A_TP_EMBED_OP_FIELD4 0x4f8
+#define A_TP_EMBED_OP_FIELD5 0x4fc
+
#define A_ULPRX_CTL 0x500
#define S_ROUND_ROBIN 4
diff --git a/drivers/net/cxgb3/t3_hw.c b/drivers/net/cxgb3/t3_hw.c
index 9e3591d..ec42562 100644
--- a/drivers/net/cxgb3/t3_hw.c
+++ b/drivers/net/cxgb3/t3_hw.c
@@ -847,6 +847,64 @@ static int t3_write_flash(struct adapter
return 0;
}
+/**
+ * t3_check_tpsram_version - read the tp sram version
+ * @adapter: the adapter
+ *
+ * Reads the protocol sram version from serial eeprom.
+ */
+int t3_check_tpsram_version(struct adapter *adapter)
+{
+ int ret;
+ u32 vers;
+ unsigned int major, minor;
+
+ /* Get version loaded in SRAM */
+ t3_write_reg(adapter, A_TP_EMBED_OP_FIELD0, 0);
+ ret = t3_wait_op_done(adapter, A_TP_EMBED_OP_FIELD0,
+ 1, 1, 5, 1);
+ if (ret)
+ return ret;
+
+ vers = t3_read_reg(adapter, A_TP_EMBED_OP_FIELD1);
+
+ major = G_TP_VERSION_MAJOR(vers);
+ minor = G_TP_VERSION_MINOR(vers);
+
+ if (major == TP_VERSION_MAJOR && minor == TP_VERSION_MINOR)
+ return 0;
+
+ return -EINVAL;
+}
+
+/**
+ * t3_check_tpsram - check if provided protocol SRAM
+ * is compatible with this driver
+ * @adapter: the adapter
+ * @tp_sram: the firmware image to write
+ * @size: image size
+ *
+ * Checks if an adapter's tp sram is compatible with the driver.
+ * Returns 0 if the versions are compatible, a negative error otherwise.
+ */
+int t3_check_tpsram(struct adapter *adapter, u8 *tp_sram, unsigned int size)
+{
+ u32 csum;
+ unsigned int i;
+ const u32 *p = (const u32 *)tp_sram;
+
+ /* Verify checksum */
+ for (csum = 0, i = 0; i < size / sizeof(csum); i++)
+ csum += ntohl(p[i]);
+ if (csum != 0xffffffff) {
+ CH_ERR(adapter, "corrupted protocol SRAM image, checksum %u\n",
+ csum);
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
enum fw_version_type {
FW_VERSION_N3,
FW_VERSION_T3
@@ -2686,6 +2744,33 @@ static void ulp_config(struct adapter *a
t3_write_reg(adap, A_ULPRX_TDDP_TAGMASK, 0xffffffff);
}
+/**
+ * t3_set_proto_sram - set the contents of the protocol sram
+ * @adapter: the adapter
+ * @data: the protocol image
+ *
+ * Write the contents of the protocol SRAM.
+ */
+int t3_set_proto_sram(struct adapter *adap, u8 *data)
+{
+ int i;
+ u32 *buf = (u32 *)data;
+
+ for (i = 0; i < PROTO_SRAM_LINES; i++) {
+ t3_write_reg(adap, A_TP_EMBED_OP_FIELD5, cpu_to_be32(*buf++));
+ t3_write_reg(adap, A_TP_EMBED_OP_FIELD4, cpu_to_be32(*buf++));
+ t3_write_reg(adap, A_TP_EMBED_OP_FIELD3, cpu_to_be32(*buf++));
+ t3_write_reg(adap, A_TP_EMBED_OP_FIELD2, cpu_to_be32(*buf++));
+ t3_write_reg(adap, A_TP_EMBED_OP_FIELD1, cpu_to_be32(*buf++));
+ data += sizeof(buf);
+
+ t3_write_reg(adap, A_TP_EMBED_OP_FIELD0, i << 1 | 1 << 31);
+ if (t3_wait_op_done(adap, A_TP_EMBED_OP_FIELD0, 1, 1, 5, 1))
+ return -EIO;
+ }
+ return 0;
+}
+
void t3_config_trace_filter(struct adapter *adapter,
const struct trace_params *tp, int filter_index,
int invert, int enable)
-
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