From f4bffb28d66c735a11859024fa0cae60711d313e Mon Sep 17 00:00:00 2001 From: Nithin Sujir Date: Wed, 6 Mar 2013 17:02:31 +0000 Subject: [PATCH] tg3: Refactor the 2nd type of cpu pause For completeness and consistency, add common function tg3_pause_cpu_and_set_pc(). This is only for existing fw and not used for the 57766. Reviewed-by: Benjamin Li Signed-off-by: Nithin Nayak Sujir Signed-off-by: Michael Chan Signed-off-by: David S. Miller --- drivers/net/ethernet/broadcom/tg3.c | 53 +++++++++++++++-------------- 1 file changed, 27 insertions(+), 26 deletions(-) diff --git a/drivers/net/ethernet/broadcom/tg3.c b/drivers/net/ethernet/broadcom/tg3.c index 35a99f76cb1d..470516918248 100644 --- a/drivers/net/ethernet/broadcom/tg3.c +++ b/drivers/net/ethernet/broadcom/tg3.c @@ -3588,12 +3588,33 @@ static int tg3_load_firmware_cpu(struct tg3 *tp, u32 cpu_base, return err; } +/* tp->lock is held. */ +static int tg3_pause_cpu_and_set_pc(struct tg3 *tp, u32 cpu_base, u32 pc) +{ + int i; + const int iters = 5; + + tw32(cpu_base + CPU_STATE, 0xffffffff); + tw32_f(cpu_base + CPU_PC, pc); + + for (i = 0; i < iters; i++) { + if (tr32(cpu_base + CPU_PC) == pc) + break; + tw32(cpu_base + CPU_STATE, 0xffffffff); + tw32(cpu_base + CPU_MODE, CPU_MODE_HALT); + tw32_f(cpu_base + CPU_PC, pc); + udelay(1000); + } + + return (i == iters) ? -EBUSY : 0; +} + /* tp->lock is held. */ static int tg3_load_5701_a0_firmware_fix(struct tg3 *tp) { struct fw_info info; const __be32 *fw_data; - int err, i; + int err; fw_data = (void *)tp->fw->data; @@ -3620,18 +3641,8 @@ static int tg3_load_5701_a0_firmware_fix(struct tg3 *tp) return err; /* Now startup only the RX cpu. */ - tw32(RX_CPU_BASE + CPU_STATE, 0xffffffff); - tw32_f(RX_CPU_BASE + CPU_PC, info.fw_base); - - for (i = 0; i < 5; i++) { - if (tr32(RX_CPU_BASE + CPU_PC) == info.fw_base) - break; - tw32(RX_CPU_BASE + CPU_STATE, 0xffffffff); - tw32(RX_CPU_BASE + CPU_MODE, CPU_MODE_HALT); - tw32_f(RX_CPU_BASE + CPU_PC, info.fw_base); - udelay(1000); - } - if (i >= 5) { + err = tg3_pause_cpu_and_set_pc(tp, RX_CPU_BASE, info.fw_base); + if (err) { netdev_err(tp->dev, "%s fails to set RX CPU PC, is %08x " "should be %08x\n", __func__, tr32(RX_CPU_BASE + CPU_PC), info.fw_base); @@ -3649,7 +3660,7 @@ static int tg3_load_tso_firmware(struct tg3 *tp) struct fw_info info; const __be32 *fw_data; unsigned long cpu_base, cpu_scratch_base, cpu_scratch_size; - int err, i; + int err; if (!tg3_flag(tp, FW_TSO)) return 0; @@ -3683,18 +3694,8 @@ static int tg3_load_tso_firmware(struct tg3 *tp) return err; /* Now startup the cpu. */ - tw32(cpu_base + CPU_STATE, 0xffffffff); - tw32_f(cpu_base + CPU_PC, info.fw_base); - - for (i = 0; i < 5; i++) { - if (tr32(cpu_base + CPU_PC) == info.fw_base) - break; - tw32(cpu_base + CPU_STATE, 0xffffffff); - tw32(cpu_base + CPU_MODE, CPU_MODE_HALT); - tw32_f(cpu_base + CPU_PC, info.fw_base); - udelay(1000); - } - if (i >= 5) { + err = tg3_pause_cpu_and_set_pc(tp, cpu_base, info.fw_base); + if (err) { netdev_err(tp->dev, "%s fails to set CPU PC, is %08x should be %08x\n", __func__, tr32(cpu_base + CPU_PC), info.fw_base); -- GitLab