diff options
| -rw-r--r-- | target/linux/generic/patches-3.3/132-solos-dma.patch | 441 |
1 files changed, 425 insertions, 16 deletions
diff --git a/target/linux/generic/patches-3.3/132-solos-dma.patch b/target/linux/generic/patches-3.3/132-solos-dma.patch index 9e7eb82..beba891 100644 --- a/target/linux/generic/patches-3.3/132-solos-dma.patch +++ b/target/linux/generic/patches-3.3/132-solos-dma.patch @@ -1,23 +1,342 @@ -From cae49ede00ec3d0cda290b03fee55b72b49efc11 Mon Sep 17 00:00:00 2001 -From: David Woodhouse <dwmw2@infradead.org> -Date: Tue, 11 Dec 2012 14:57:14 +0000 -Subject: [PATCH] solos-pci: fix double-free of TX skb in DMA mode - -We weren't clearing card->tx_skb[port] when processing the TX done interrupt. -If there wasn't another skb ready to transmit immediately, this led to a -double-free because we'd free it *again* next time we did have a packet to -send. - -Signed-off-by: David Woodhouse <David.Woodhouse@intel.com> -Cc: stable@kernel.org -Signed-off-by: David S. Miller <davem@davemloft.net> +commit b4bd8ad9bb311e8536f726f7a633620ccd358cde +Author: David Woodhouse <dwmw2@infradead.org> +Date: Thu May 24 04:58:27 2012 +0000 + + solos-pci: Fix DMA support + + DMA support has finally made its way to the top of the TODO list, having + realised that a Geode using MMIO can't keep up with two ADSL2+ lines + each running at 21Mb/s. + + This patch fixes a couple of bugs in the DMA support in the driver, so + once the corresponding FPGA update is complete and tested everything + should work properly. + + We weren't storing the currently-transmitting skb, so we were never + unmapping it and never freeing/popping it when the TX was done. + And the addition of pci_set_master() is fairly self-explanatory. + + Signed-off-by: David Woodhouse <David.Woodhouse@intel.com> + Cc: stable@kernel.org + Signed-off-by: David S. Miller <davem@davemloft.net> + +commit 152a2a8b5e1d4cbe91a7c66f1028db15164a3766 +Author: David Woodhouse <David.Woodhouse@intel.com> +Date: Wed Dec 19 11:01:21 2012 +0000 + + solos-pci: ensure all TX packets are aligned to 4 bytes + + The FPGA can't handled unaligned DMA (yet). So copy into an aligned buffer, + if skb->data isn't suitably aligned. + + Signed-off-by: David Woodhouse <David.Woodhouse@intel.com> + Signed-off-by: David S. Miller <davem@davemloft.net> + +commit 13af816469db3449c072afbae6c4c1bd9ccecccb +Author: Nathan Williams <nathan@traverse.com.au> +Date: Wed Dec 19 11:01:20 2012 +0000 + + solos-pci: add firmware upgrade support for new models + + Signed-off-by: Nathan Williams <nathan@traverse.com.au> + Signed-off-by: David Woodhouse <David.Woodhouse@intel.com> + Signed-off-by: David S. Miller <davem@davemloft.net> + +commit 7fbdadb5e951e4f0c0fc991ff5f50295568786e6 +Author: Nathan Williams <nathan@traverse.com.au> +Date: Wed Dec 19 11:01:19 2012 +0000 + + solos-pci: remove superfluous debug output + + Signed-off-by: Nathan Williams <nathan@traverse.com.au> + Signed-off-by: David Woodhouse <David.Woodhouse@intel.com> + Signed-off-by: David S. Miller <davem@davemloft.net> + +commit f9baad02e7411d9f38d5ebe1a1cdcde4ceec100d +Author: Nathan Williams <nathan@traverse.com.au> +Date: Wed Dec 19 11:01:18 2012 +0000 + + solos-pci: add GPIO support for newer versions on Geos board + + dwmw2: Tidy up a little, simpler matching on which GPIO is being accessed, + only register on newer boards, register under PCI device instead of + duplicating them under each ATM device. + + Signed-off-by: Nathan Williams <nathan@traverse.com.au> + Signed-off-by: David Woodhouse <David.Woodhouse@intel.com> + Signed-off-by: David S. Miller <davem@davemloft.net> + +commit cae49ede00ec3d0cda290b03fee55b72b49efc11 +Author: David Woodhouse <dwmw2@infradead.org> +Date: Tue Dec 11 14:57:14 2012 +0000 + + solos-pci: fix double-free of TX skb in DMA mode + + We weren't clearing card->tx_skb[port] when processing the TX done interrupt. + If there wasn't another skb ready to transmit immediately, this led to a + double-free because we'd free it *again* next time we did have a packet to + send. + + Signed-off-by: David Woodhouse <David.Woodhouse@intel.com> + Cc: stable@kernel.org + Signed-off-by: David S. Miller <davem@davemloft.net> + +== +There is a typo here so we do a double lock instead of an unlock. + +Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> --- - drivers/atm/solos-pci.c | 5 +++-- - 1 file changed, 3 insertions(+), 2 deletions(-) +Only needed in linux-next. Introduced in f9baad02e7411d9 [14/17] +solos-pci: add GPIO support for newer versions on Geos board + --- a/drivers/atm/solos-pci.c +++ b/drivers/atm/solos-pci.c -@@ -945,10 +945,11 @@ static uint32_t fpga_tx(struct solos_car +@@ -42,7 +42,8 @@ + #include <linux/swab.h> + #include <linux/slab.h> + +-#define VERSION "0.07" ++#define VERSION "1.04" ++#define DRIVER_VERSION 0x01 + #define PTAG "solos-pci" + + #define CONFIG_RAM_SIZE 128 +@@ -56,16 +57,21 @@ + #define FLASH_BUSY 0x60 + #define FPGA_MODE 0x5C + #define FLASH_MODE 0x58 ++#define GPIO_STATUS 0x54 ++#define DRIVER_VER 0x50 + #define TX_DMA_ADDR(port) (0x40 + (4 * (port))) + #define RX_DMA_ADDR(port) (0x30 + (4 * (port))) + + #define DATA_RAM_SIZE 32768 + #define BUF_SIZE 2048 + #define OLD_BUF_SIZE 4096 /* For FPGA versions <= 2*/ +-#define FPGA_PAGE 528 /* FPGA flash page size*/ +-#define SOLOS_PAGE 512 /* Solos flash page size*/ +-#define FPGA_BLOCK (FPGA_PAGE * 8) /* FPGA flash block size*/ +-#define SOLOS_BLOCK (SOLOS_PAGE * 8) /* Solos flash block size*/ ++/* Old boards use ATMEL AD45DB161D flash */ ++#define ATMEL_FPGA_PAGE 528 /* FPGA flash page size*/ ++#define ATMEL_SOLOS_PAGE 512 /* Solos flash page size*/ ++#define ATMEL_FPGA_BLOCK (ATMEL_FPGA_PAGE * 8) /* FPGA block size*/ ++#define ATMEL_SOLOS_BLOCK (ATMEL_SOLOS_PAGE * 8) /* Solos block size*/ ++/* Current boards use M25P/M25PE SPI flash */ ++#define SPI_FLASH_BLOCK (256 * 64) + + #define RX_BUF(card, nr) ((card->buffers) + (nr)*(card->buffer_size)*2) + #define TX_BUF(card, nr) ((card->buffers) + (nr)*(card->buffer_size)*2 + (card->buffer_size)) +@@ -123,11 +129,14 @@ struct solos_card { + struct sk_buff_head cli_queue[4]; + struct sk_buff *tx_skb[4]; + struct sk_buff *rx_skb[4]; ++ unsigned char *dma_bounce; + wait_queue_head_t param_wq; + wait_queue_head_t fw_wq; + int using_dma; ++ int dma_alignment; + int fpga_version; + int buffer_size; ++ int atmel_flash; + }; + + +@@ -452,7 +461,6 @@ static ssize_t console_show(struct devic + + len = skb->len; + memcpy(buf, skb->data, len); +- dev_dbg(&card->dev->dev, "len: %d\n", len); + + kfree_skb(skb); + return len; +@@ -499,6 +507,78 @@ static ssize_t console_store(struct devi + return err?:count; + } + ++struct geos_gpio_attr { ++ struct device_attribute attr; ++ int offset; ++}; ++ ++#define SOLOS_GPIO_ATTR(_name, _mode, _show, _store, _offset) \ ++ struct geos_gpio_attr gpio_attr_##_name = { \ ++ .attr = __ATTR(_name, _mode, _show, _store), \ ++ .offset = _offset } ++ ++static ssize_t geos_gpio_store(struct device *dev, struct device_attribute *attr, ++ const char *buf, size_t count) ++{ ++ struct pci_dev *pdev = container_of(dev, struct pci_dev, dev); ++ struct geos_gpio_attr *gattr = container_of(attr, struct geos_gpio_attr, attr); ++ struct solos_card *card = pci_get_drvdata(pdev); ++ uint32_t data32; ++ ++ if (count != 1 && (count != 2 || buf[1] != '\n')) ++ return -EINVAL; ++ ++ spin_lock_irq(&card->param_queue_lock); ++ data32 = ioread32(card->config_regs + GPIO_STATUS); ++ if (buf[0] == '1') { ++ data32 |= 1 << gattr->offset; ++ iowrite32(data32, card->config_regs + GPIO_STATUS); ++ } else if (buf[0] == '0') { ++ data32 &= ~(1 << gattr->offset); ++ iowrite32(data32, card->config_regs + GPIO_STATUS); ++ } else { ++ count = -EINVAL; ++ } ++ spin_unlock_irq(&card->param_queue_lock); ++ return count; ++} ++ ++static ssize_t geos_gpio_show(struct device *dev, struct device_attribute *attr, ++ char *buf) ++{ ++ struct pci_dev *pdev = container_of(dev, struct pci_dev, dev); ++ struct geos_gpio_attr *gattr = container_of(attr, struct geos_gpio_attr, attr); ++ struct solos_card *card = pci_get_drvdata(pdev); ++ uint32_t data32; ++ ++ data32 = ioread32(card->config_regs + GPIO_STATUS); ++ data32 = (data32 >> gattr->offset) & 1; ++ ++ return sprintf(buf, "%d\n", data32); ++} ++ ++static ssize_t hardware_show(struct device *dev, struct device_attribute *attr, ++ char *buf) ++{ ++ struct pci_dev *pdev = container_of(dev, struct pci_dev, dev); ++ struct geos_gpio_attr *gattr = container_of(attr, struct geos_gpio_attr, attr); ++ struct solos_card *card = pci_get_drvdata(pdev); ++ uint32_t data32; ++ ++ data32 = ioread32(card->config_regs + GPIO_STATUS); ++ switch (gattr->offset) { ++ case 0: ++ /* HardwareVersion */ ++ data32 = data32 & 0x1F; ++ break; ++ case 1: ++ /* HardwareVariant */ ++ data32 = (data32 >> 5) & 0x0F; ++ break; ++ } ++ return sprintf(buf, "%d\n", data32); ++} ++ + static DEVICE_ATTR(console, 0644, console_show, console_store); + + +@@ -507,6 +587,14 @@ static DEVICE_ATTR(console, 0644, consol + + #include "solos-attrlist.c" + ++static SOLOS_GPIO_ATTR(GPIO1, 0644, geos_gpio_show, geos_gpio_store, 9); ++static SOLOS_GPIO_ATTR(GPIO2, 0644, geos_gpio_show, geos_gpio_store, 10); ++static SOLOS_GPIO_ATTR(GPIO3, 0644, geos_gpio_show, geos_gpio_store, 11); ++static SOLOS_GPIO_ATTR(GPIO4, 0644, geos_gpio_show, geos_gpio_store, 12); ++static SOLOS_GPIO_ATTR(GPIO5, 0644, geos_gpio_show, geos_gpio_store, 13); ++static SOLOS_GPIO_ATTR(PushButton, 0444, geos_gpio_show, NULL, 14); ++static SOLOS_GPIO_ATTR(HardwareVersion, 0444, hardware_show, NULL, 0); ++static SOLOS_GPIO_ATTR(HardwareVariant, 0444, hardware_show, NULL, 1); + #undef SOLOS_ATTR_RO + #undef SOLOS_ATTR_RW + +@@ -523,6 +611,23 @@ static struct attribute_group solos_attr + .name = "parameters", + }; + ++static struct attribute *gpio_attrs[] = { ++ &gpio_attr_GPIO1.attr.attr, ++ &gpio_attr_GPIO2.attr.attr, ++ &gpio_attr_GPIO3.attr.attr, ++ &gpio_attr_GPIO4.attr.attr, ++ &gpio_attr_GPIO5.attr.attr, ++ &gpio_attr_PushButton.attr.attr, ++ &gpio_attr_HardwareVersion.attr.attr, ++ &gpio_attr_HardwareVariant.attr.attr, ++ NULL ++}; ++ ++static struct attribute_group gpio_attr_group = { ++ .attrs = gpio_attrs, ++ .name = "gpio", ++}; ++ + static int flash_upgrade(struct solos_card *card, int chip) + { + const struct firmware *fw; +@@ -534,16 +639,25 @@ static int flash_upgrade(struct solos_ca + switch (chip) { + case 0: + fw_name = "solos-FPGA.bin"; +- blocksize = FPGA_BLOCK; ++ if (card->atmel_flash) ++ blocksize = ATMEL_FPGA_BLOCK; ++ else ++ blocksize = SPI_FLASH_BLOCK; + break; + case 1: + fw_name = "solos-Firmware.bin"; +- blocksize = SOLOS_BLOCK; ++ if (card->atmel_flash) ++ blocksize = ATMEL_SOLOS_BLOCK; ++ else ++ blocksize = SPI_FLASH_BLOCK; + break; + case 2: + if (card->fpga_version > LEGACY_BUFFERS){ + fw_name = "solos-db-FPGA.bin"; +- blocksize = FPGA_BLOCK; ++ if (card->atmel_flash) ++ blocksize = ATMEL_FPGA_BLOCK; ++ else ++ blocksize = SPI_FLASH_BLOCK; + } else { + dev_info(&card->dev->dev, "FPGA version doesn't support" + " daughter board upgrades\n"); +@@ -553,7 +667,10 @@ static int flash_upgrade(struct solos_ca + case 3: + if (card->fpga_version > LEGACY_BUFFERS){ + fw_name = "solos-Firmware.bin"; +- blocksize = SOLOS_BLOCK; ++ if (card->atmel_flash) ++ blocksize = ATMEL_SOLOS_BLOCK; ++ else ++ blocksize = SPI_FLASH_BLOCK; + } else { + dev_info(&card->dev->dev, "FPGA version doesn't support" + " daughter board upgrades\n"); +@@ -569,6 +686,9 @@ static int flash_upgrade(struct solos_ca + + dev_info(&card->dev->dev, "Flash upgrade starting\n"); + ++ /* New FPGAs require driver version before permitting flash upgrades */ ++ iowrite32(DRIVER_VERSION, card->config_regs + DRIVER_VER); ++ + numblocks = fw->size / blocksize; + dev_info(&card->dev->dev, "Firmware size: %zd\n", fw->size); + dev_info(&card->dev->dev, "Number of blocks: %d\n", numblocks); +@@ -598,9 +718,13 @@ static int flash_upgrade(struct solos_ca + /* dev_info(&card->dev->dev, "Set FPGA Flash mode to Block Write\n"); */ + iowrite32(((chip * 2) + 1), card->config_regs + FLASH_MODE); + +- /* Copy block to buffer, swapping each 16 bits */ ++ /* Copy block to buffer, swapping each 16 bits for Atmel flash */ + for(i = 0; i < blocksize; i += 4) { +- uint32_t word = swahb32p((uint32_t *)(fw->data + offset + i)); ++ uint32_t word; ++ if (card->atmel_flash) ++ word = swahb32p((uint32_t *)(fw->data + offset + i)); ++ else ++ word = *(uint32_t *)(fw->data + offset + i); + if(card->fpga_version > LEGACY_BUFFERS) + iowrite32(word, FLASH_BUF + i); + else +@@ -945,10 +1069,11 @@ static uint32_t fpga_tx(struct solos_car for (port = 0; tx_pending; tx_pending >>= 1, port++) { if (tx_pending & 1) { struct sk_buff *oldskb = card->tx_skb[port]; @@ -31,3 +350,93 @@ Signed-off-by: David S. Miller <davem@davemloft.net> spin_lock(&card->tx_queue_lock); skb = skb_dequeue(&card->tx_queue[port]); if (!skb) +@@ -960,8 +1085,14 @@ static uint32_t fpga_tx(struct solos_car + tx_started |= 1 << port; + oldskb = skb; /* We're done with this skb already */ + } else if (skb && card->using_dma) { +- SKB_CB(skb)->dma_addr = pci_map_single(card->dev, skb->data, ++ unsigned char *data = skb->data; ++ if ((unsigned long)data & card->dma_alignment) { ++ data = card->dma_bounce + (BUF_SIZE * port); ++ memcpy(data, skb->data, skb->len); ++ } ++ SKB_CB(skb)->dma_addr = pci_map_single(card->dev, data, + skb->len, PCI_DMA_TODEVICE); ++ card->tx_skb[port] = skb; + iowrite32(SKB_CB(skb)->dma_addr, + card->config_regs + TX_DMA_ADDR(port)); + } +@@ -1133,17 +1264,33 @@ static int fpga_probe(struct pci_dev *de + db_fpga_upgrade = db_firmware_upgrade = 0; + } + +- if (card->fpga_version >= DMA_SUPPORTED){ ++ /* Stopped using Atmel flash after 0.03-38 */ ++ if (fpga_ver < 39) ++ card->atmel_flash = 1; ++ else ++ card->atmel_flash = 0; ++ ++ data32 = ioread32(card->config_regs + PORTS); ++ card->nr_ports = (data32 & 0x000000FF); ++ ++ if (card->fpga_version >= DMA_SUPPORTED) { ++ pci_set_master(dev); + card->using_dma = 1; ++ if (1) { /* All known FPGA versions so far */ ++ card->dma_alignment = 3; ++ card->dma_bounce = kmalloc(card->nr_ports * BUF_SIZE, GFP_KERNEL); ++ if (!card->dma_bounce) { ++ dev_warn(&card->dev->dev, "Failed to allocate DMA bounce buffers\n"); ++ /* Fallback to MMIO doesn't work */ ++ goto out_unmap_both; ++ } ++ } + } else { + card->using_dma = 0; + /* Set RX empty flag for all ports */ + iowrite32(0xF0, card->config_regs + FLAGS_ADDR); + } + +- data32 = ioread32(card->config_regs + PORTS); +- card->nr_ports = (data32 & 0x000000FF); +- + pci_set_drvdata(dev, card); + + tasklet_init(&card->tlet, solos_bh, (unsigned long)card); +@@ -1178,6 +1325,10 @@ static int fpga_probe(struct pci_dev *de + if (err) + goto out_free_irq; + ++ if (card->fpga_version >= DMA_SUPPORTED && ++ sysfs_create_group(&card->dev->dev.kobj, &gpio_attr_group)) ++ dev_err(&card->dev->dev, "Could not register parameter group for GPIOs\n"); ++ + return 0; + + out_free_irq: +@@ -1186,6 +1337,7 @@ static int fpga_probe(struct pci_dev *de + tasklet_kill(&card->tlet); + + out_unmap_both: ++ kfree(card->dma_bounce); + pci_set_drvdata(dev, NULL); + pci_iounmap(dev, card->buffers); + out_unmap_config: +@@ -1288,11 +1440,16 @@ static void fpga_remove(struct pci_dev * + iowrite32(1, card->config_regs + FPGA_MODE); + (void)ioread32(card->config_regs + FPGA_MODE); + ++ if (card->fpga_version >= DMA_SUPPORTED) ++ sysfs_remove_group(&card->dev->dev.kobj, &gpio_attr_group); ++ + atm_remove(card); + + free_irq(dev->irq, card); + tasklet_kill(&card->tlet); + ++ kfree(card->dma_bounce); ++ + /* Release device from reset */ + iowrite32(0, card->config_regs + FPGA_MODE); + (void)ioread32(card->config_regs + FPGA_MODE); |