[U-Boot] [Patch V4 05/17] net/fm: Add support for 64-bit platforms

Gong Qianyu
2015-10-14T11:44:20Z

From: Hou Zhiqiang <B48286@freescale.com>

The FMan IM driver is developed for 32-bit platfroms and isn't
friendly to 64-bit platforms, so do the minimal refactor:

1. Refine the MURAM management and access.
2. Correct the initialization and operations for QDs and BDs.

Signed-off-by: Hou Zhiqiang <B48286@freescale.com>
Signed-off-by: Gong Qianyu <Qianyu.Gong@freescale.com>
---
V3:
- New patch.
V4:
- No change.

drivers/net/fm/eth.c | 61 ++++++++++++++++++++++++++++++++++++----------------
drivers/net/fm/fm.c | 20 ++++++++++-------
drivers/net/fm/fm.h | 12 +++++------
3 files changed, 60 insertions(+), 33 deletions(-)

diff --git a/drivers/net/fm/eth.c b/drivers/net/fm/eth.c
index ad02c66..6451dce 100644
--- a/drivers/net/fm/eth.c
+++ b/drivers/net/fm/eth.c
@@ -108,12 +108,12 @@ static int tgec_is_fibre(struct eth_device *dev)

static u16 muram_readw(u16 *addr)
{
- u32 base = (u32)addr & ~0x3;
- u32 val32 = in_be32((u32 *)base);
+ ulong base = (ulong)addr & ~0x3UL;
+ u32 val32 = in_be32((void *)base);
int byte_pos;
u16 ret;

- byte_pos = (u32)addr & 0x3;
+ byte_pos = (ulong)addr & 0x3UL;
if (byte_pos)
ret = (u16)(val32 & 0x0000ffff);
else
@@ -124,18 +124,18 @@ static u16 muram_readw(u16 *addr)

static void muram_writew(u16 *addr, u16 val)
{
- u32 base = (u32)addr & ~0x3;
- u32 org32 = in_be32((u32 *)base);
+ ulong base = (ulong)addr & ~0x3UL;
+ u32 org32 = in_be32((void *)base);
u32 val32;
int byte_pos;

- byte_pos = (u32)addr & 0x3;
+ byte_pos = (ulong)addr & 0x3UL;
if (byte_pos)
val32 = (org32 & 0xffff0000) | val;
else
val32 = (org32 & 0x0000ffff) | ((u32)val << 16);

- out_be32((u32 *)base, val32);
+ out_be32((void *)base, val32);
}

static void bmi_rx_port_disable(struct fm_bmi_rx_port *rx_port)
@@ -199,6 +199,8 @@ static int fm_eth_rx_port_parameter_init(struct fm_eth *fm_eth)
u32 pram_page_offset;
void *rx_bd_ring_base;
void *rx_buf_pool;
+ u32 bd_ring_base_lo, bd_ring_base_hi;
+ u32 buf_lo, buf_hi;
struct fm_port_bd *rxbd;
struct fm_port_qd *rxqd;
struct fm_bmi_rx_port *bmi_rx_port = fm_eth->rx_port;
@@ -207,10 +209,15 @@ static int fm_eth_rx_port_parameter_init(struct fm_eth *fm_eth)
/* alloc global parameter ram at MURAM */
pram = (struct fm_port_global_pram *)fm_muram_alloc(fm_eth->fm_index,
FM_PRAM_SIZE, FM_PRAM_ALIGN);
+ if (!pram) {
+ printf("%s: No muram for Rx global parameter\n", __func__);
+ return 0;
+ }
+
fm_eth->rx_pram = pram;

/* parameter page offset to MURAM */
- pram_page_offset = (u32)pram - fm_muram_base(fm_eth->fm_index);
+ pram_page_offset = (void *)pram - fm_muram_base(fm_eth->fm_index);

/* enable global mode- snooping data buffers and BDs */
out_be32(&pram->mode, PRAM_MODE_GLOBAL);
@@ -234,6 +241,7 @@ static int fm_eth_rx_port_parameter_init(struct fm_eth *fm_eth)
if (!rx_buf_pool)
return 0;
memset(rx_buf_pool, 0, MAX_RXBUF_LEN * RX_BD_RING_SIZE);
+ debug("%s: rx_buf_pool = %p\n", __func__, rx_buf_pool);

/* save them to fm_eth */
fm_eth->rx_bd_ring = rx_bd_ring_base;
@@ -245,17 +253,22 @@ static int fm_eth_rx_port_parameter_init(struct fm_eth *fm_eth)
for (i = 0; i < RX_BD_RING_SIZE; i++) {
muram_writew(&rxbd->status, RxBD_EMPTY);
muram_writew(&rxbd->len, 0);
- muram_writew(&rxbd->buf_ptr_hi, 0);
- out_be32(&rxbd->buf_ptr_lo, (u32)rx_buf_pool +
- i * MAX_RXBUF_LEN);
+ buf_hi = upper_32_bits(virt_to_phys(rx_buf_pool +
+ i * MAX_RXBUF_LEN));
+ buf_lo = lower_32_bits(virt_to_phys(rx_buf_pool +
+ i * MAX_RXBUF_LEN));
+ muram_writew(&rxbd->buf_ptr_hi, (u16)buf_hi);
+ out_be32(&rxbd->buf_ptr_lo, buf_lo);
rxbd++;
}

/* set the Rx queue descriptor */
rxqd = &pram->rxqd;
muram_writew(&rxqd->gen, 0);
- muram_writew(&rxqd->bd_ring_base_hi, 0);
- out_be32(&rxqd->bd_ring_base_lo, (u32)rx_bd_ring_base);
+ bd_ring_base_hi = upper_32_bits(virt_to_phys(rx_bd_ring_base));
+ bd_ring_base_lo = lower_32_bits(virt_to_phys(rx_bd_ring_base));
+ muram_writew(&rxqd->bd_ring_base_hi, (u16)bd_ring_base_hi);
+ out_be32(&rxqd->bd_ring_base_lo, bd_ring_base_lo);
muram_writew(&rxqd->bd_ring_size, sizeof(struct fm_port_bd)
* RX_BD_RING_SIZE);
muram_writew(&rxqd->offset_in, 0);
@@ -272,6 +285,7 @@ static int fm_eth_tx_port_parameter_init(struct fm_eth *fm_eth)
struct fm_port_global_pram *pram;
u32 pram_page_offset;
void *tx_bd_ring_base;
+ u32 bd_ring_base_lo, bd_ring_base_hi;
struct fm_port_bd *txbd;
struct fm_port_qd *txqd;
struct fm_bmi_tx_port *bmi_tx_port = fm_eth->tx_port;
@@ -280,10 +294,14 @@ static int fm_eth_tx_port_parameter_init(struct fm_eth *fm_eth)
/* alloc global parameter ram at MURAM */
pram = (struct fm_port_global_pram *)fm_muram_alloc(fm_eth->fm_index,
FM_PRAM_SIZE, FM_PRAM_ALIGN);
+ if (!pram) {
+ printf("%s: No muram for Tx global parameter\n", __func__);
+ return 0;
+ }
fm_eth->tx_pram = pram;

/* parameter page offset to MURAM */
- pram_page_offset = (u32)pram - fm_muram_base(fm_eth->fm_index);
+ pram_page_offset = (void *)pram - fm_muram_base(fm_eth->fm_index);

/* enable global mode- snooping data buffers and BDs */
out_be32(&pram->mode, PRAM_MODE_GLOBAL);
@@ -314,8 +332,10 @@ static int fm_eth_tx_port_parameter_init(struct fm_eth *fm_eth)

/* set the Tx queue decriptor */
txqd = &pram->txqd;
- muram_writew(&txqd->bd_ring_base_hi, 0);
- out_be32(&txqd->bd_ring_base_lo, (u32)tx_bd_ring_base);
+ bd_ring_base_hi = upper_32_bits(virt_to_phys(tx_bd_ring_base));
+ bd_ring_base_lo = lower_32_bits(virt_to_phys(tx_bd_ring_base));
+ muram_writew(&txqd->bd_ring_base_hi, (u16)bd_ring_base_hi);
+ out_be32(&txqd->bd_ring_base_lo, bd_ring_base_lo);
muram_writew(&txqd->bd_ring_size, sizeof(struct fm_port_bd)
* TX_BD_RING_SIZE);
muram_writew(&txqd->offset_in, 0);
@@ -480,8 +500,8 @@ static int fm_eth_send(struct eth_device *dev, void *buf, int len)
}
}
/* setup TxBD */
- muram_writew(&txbd->buf_ptr_hi, 0);
- out_be32(&txbd->buf_ptr_lo, (u32)buf);
+ muram_writew(&txbd->buf_ptr_hi, (u16)upper_32_bits(virt_to_phys(buf)));
+ out_be32(&txbd->buf_ptr_lo, lower_32_bits(virt_to_phys(buf)));
muram_writew(&txbd->len, len);
mb();
muram_writew(&txbd->status, TxBD_READY | TxBD_LAST);
@@ -522,6 +542,7 @@ static int fm_eth_recv(struct eth_device *dev)
struct fm_port_global_pram *pram;
struct fm_port_bd *rxbd, *rxbd_base;
u16 status, len;
+ u32 buf_lo, buf_hi;
u8 *data;
u16 offset_out;
int ret = 1;
@@ -533,7 +554,9 @@ static int fm_eth_recv(struct eth_device *dev)

while (!(status & RxBD_EMPTY)) {
if (!(status & RxBD_ERROR)) {
- data = (u8 *)in_be32(&rxbd->buf_ptr_lo);
+ buf_hi = muram_readw(&rxbd->buf_ptr_hi);
+ buf_lo = in_be32(&rxbd->buf_ptr_lo);
+ data = (u8 *)((ulong)(buf_hi << 16) << 16 | buf_lo);
len = muram_readw(&rxbd->len);
net_process_received_packet(data, len);
} else {
diff --git a/drivers/net/fm/fm.c b/drivers/net/fm/fm.c
index eb0eb3d..df5db72 100644
--- a/drivers/net/fm/fm.c
+++ b/drivers/net/fm/fm.c
@@ -22,21 +22,22 @@

struct fm_muram muram[CONFIG_SYS_NUM_FMAN];

-u32 fm_muram_base(int fm_idx)
+void *fm_muram_base(int fm_idx)
{
return muram[fm_idx].base;
}

-u32 fm_muram_alloc(int fm_idx, u32 size, u32 align)
+void *fm_muram_alloc(int fm_idx, size_t size, ulong align)
{
- u32 ret;
- u32 align_mask, off;
- u32 save;
+ void *ret;
+ ulong align_mask;
+ size_t off;
+ void *save;

align_mask = align - 1;
save = muram[fm_idx].alloc;

- off = save & align_mask;
+ off = (ulong)save & align_mask;
if (off != 0)
muram[fm_idx].alloc += (align - off);
off = size & align_mask;
@@ -45,6 +46,7 @@ u32 fm_muram_alloc(int fm_idx, u32 size, u32 align)
if ((muram[fm_idx].alloc + size) >= muram[fm_idx].top) {
muram[fm_idx].alloc = save;
printf("%s: run out of ram.\n", __func__);
+ return NULL;
}

ret = muram[fm_idx].alloc;
@@ -56,7 +58,7 @@ u32 fm_muram_alloc(int fm_idx, u32 size, u32 align)

static void fm_init_muram(int fm_idx, void *reg)
{
- u32 base = (u32)reg;
+ void *base = reg;

muram[fm_idx].base = base;
muram[fm_idx].size = CONFIG_SYS_FM_MURAM_SIZE;
@@ -256,7 +258,9 @@ static void fm_init_fpm(struct fm_fpm *fpm)
static int fm_init_bmi(int fm_idx, struct fm_bmi_common *bmi)
{
int blk, i, port_id;
- u32 val, offset, base;
+ u32 val;
+ size_t offset;
+ void *base;

/* alloc free buffer pool in MURAM */
base = fm_muram_alloc(fm_idx, FM_FREE_POOL_SIZE, FM_FREE_POOL_ALIGN);
diff --git a/drivers/net/fm/fm.h b/drivers/net/fm/fm.h
index a9691c6..73c525e 100644
--- a/drivers/net/fm/fm.h
+++ b/drivers/net/fm/fm.h
@@ -26,10 +26,10 @@
#define MIIM_TIMEOUT 0xFFFF

struct fm_muram {
- u32 base;
- u32 top;
- u32 size;
- u32 alloc;
+ void *base;
+ void *top;
+ size_t size;
+ void *alloc;
};
#define FM_MURAM_RES_SIZE 0x01000

@@ -95,8 +95,8 @@ struct fm_port_global_pram {
#endif
#define FM_FREE_POOL_ALIGN 256

-u32 fm_muram_alloc(int fm_idx, u32 size, u32 align);
-u32 fm_muram_base(int fm_idx);
+void *fm_muram_alloc(int fm_idx, size_t size, ulong align);
+void *fm_muram_base(int fm_idx);
int fm_init_common(int index, struct ccsr_fman *reg);
int fm_eth_initialize(struct ccsr_fman *reg, struct fm_eth_info *info);
phy_interface_t fman_port_enet_if(enum fm_port port);
--
2.1.0.27.g96db324