From: Thomas Petazzoni thomas.petazzoni@free-electrons.com
This commit adjusts the allocation and freeing of BM pools to support PPv2.2. This involves:
- Checking that the number of buffer pointers is a multiple of 16, as required by the hardware.
- Adjusting the size of the DMA coherent area allocated for buffer pointers. Indeed, PPv2.2 needs space for 2 pointers of 64-bits per buffer, as opposed to 2 pointers of 32-bits per buffer in PPv2.1. The size in bytes is now stored in a new field of the mvpp2_bm_pool structure.
- On PPv2.2, getting the physical and virtual address of each buffer requires reading the MVPP2_BM_ADDR_HIGH_ALLOC to get the high order bits of those addresses. A new utility function mvpp2_bm_bufs_get_addrs() is introduced to handle this.
- On PPv2.2, releasing a buffer requires writing the high order 32 bits of the physical address to MVPP2_BM_PHY_VIRT_HIGH_RLS_REG. We no longer need to write the virtual address to MVPP2_BM_VIRT_RLS_REG.
Signed-off-by: Thomas Petazzoni thomas.petazzoni@free-electrons.com Signed-off-by: Stefan Roese sr@denx.de Acked-by: Joe Hershberger joe.hershberger@ni.com
---
Changes in v2: - Added Acked-by from Joe
drivers/net/mvpp2.c | 39 ++++++++++++++++++++++++++++++++++++--- 1 file changed, 36 insertions(+), 3 deletions(-)
diff --git a/drivers/net/mvpp2.c b/drivers/net/mvpp2.c index 605c8bcd70..4f4e6749dc 100644 --- a/drivers/net/mvpp2.c +++ b/drivers/net/mvpp2.c @@ -251,14 +251,23 @@ do { \ #define MVPP2_BM_PHY_ALLOC_REG(pool) (0x6400 + ((pool) * 4)) #define MVPP2_BM_PHY_ALLOC_GRNTD_MASK BIT(0) #define MVPP2_BM_VIRT_ALLOC_REG 0x6440 +#define MVPP2_BM_ADDR_HIGH_ALLOC 0x6444 +#define MVPP2_BM_ADDR_HIGH_PHYS_MASK 0xff +#define MVPP2_BM_ADDR_HIGH_VIRT_MASK 0xff00 +#define MVPP2_BM_ADDR_HIGH_VIRT_SHIFT 8 #define MVPP2_BM_PHY_RLS_REG(pool) (0x6480 + ((pool) * 4)) #define MVPP2_BM_PHY_RLS_MC_BUFF_MASK BIT(0) #define MVPP2_BM_PHY_RLS_PRIO_EN_MASK BIT(1) #define MVPP2_BM_PHY_RLS_GRNTD_MASK BIT(2) #define MVPP2_BM_VIRT_RLS_REG 0x64c0 -#define MVPP2_BM_MC_RLS_REG 0x64c4 +#define MVPP21_BM_MC_RLS_REG 0x64c4 #define MVPP2_BM_MC_ID_MASK 0xfff #define MVPP2_BM_FORCE_RELEASE_MASK BIT(12) +#define MVPP22_BM_ADDR_HIGH_RLS_REG 0x64c4 +#define MVPP22_BM_ADDR_HIGH_PHYS_RLS_MASK 0xff +#define MVPP22_BM_ADDR_HIGH_VIRT_RLS_MASK 0xff00 +#define MVPP22_BM_ADDR_HIGH_VIRT_RLS_SHIFT 8 +#define MVPP22_BM_MC_RLS_REG 0x64d4
/* TX Scheduler registers */ #define MVPP2_TXP_SCHED_PORT_INDEX_REG 0x8000 @@ -2332,6 +2341,12 @@ static int mvpp2_bm_pool_create(struct udevice *dev, { u32 val;
+ /* Number of buffer pointers must be a multiple of 16, as per + * hardware constraints + */ + if (!IS_ALIGNED(size, 16)) + return -EINVAL; + bm_pool->virt_addr = buffer_loc.bm_pool[bm_pool->id]; bm_pool->dma_addr = (dma_addr_t)buffer_loc.bm_pool[bm_pool->id]; if (!bm_pool->virt_addr) @@ -2345,7 +2360,7 @@ static int mvpp2_bm_pool_create(struct udevice *dev, }
mvpp2_write(priv, MVPP2_BM_POOL_BASE_REG(bm_pool->id), - bm_pool->dma_addr); + lower_32_bits(bm_pool->dma_addr)); mvpp2_write(priv, MVPP2_BM_POOL_SIZE_REG(bm_pool->id), size);
val = mvpp2_read(priv, MVPP2_BM_POOL_CTRL_REG(bm_pool->id)); @@ -2488,6 +2503,21 @@ static inline void mvpp2_bm_pool_put(struct mvpp2_port *port, int pool, dma_addr_t buf_dma_addr, unsigned long buf_phys_addr) { + if (port->priv->hw_version == MVPP22) { + u32 val = 0; + + if (sizeof(dma_addr_t) == 8) + val |= upper_32_bits(buf_dma_addr) & + MVPP22_BM_ADDR_HIGH_PHYS_RLS_MASK; + + if (sizeof(phys_addr_t) == 8) + val |= (upper_32_bits(buf_phys_addr) + << MVPP22_BM_ADDR_HIGH_VIRT_RLS_SHIFT) & + MVPP22_BM_ADDR_HIGH_VIRT_RLS_MASK; + + mvpp2_write(port->priv, MVPP22_BM_ADDR_HIGH_RLS_REG, val); + } + /* MVPP2_BM_VIRT_RLS_REG is not interpreted by HW, and simply * returned in the "cookie" field of the RX * descriptor. Instead of storing the virtual address, we @@ -4237,7 +4267,10 @@ static int mvpp2_base_probe(struct udevice *dev) for (i = 0; i < MVPP2_BM_POOLS_NUM; i++) { buffer_loc.bm_pool[i] = (unsigned long *)((unsigned long)bd_space + size); - size += MVPP2_BM_POOL_SIZE_MAX * sizeof(u32); + if (priv->hw_version == MVPP21) + size += MVPP2_BM_POOL_SIZE_MAX * 2 * sizeof(u32); + else + size += MVPP2_BM_POOL_SIZE_MAX * 2 * sizeof(u64); }
for (i = 0; i < MVPP2_BM_LONG_BUF_NUM; i++) {