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authorLinus Torvalds <torvalds@linux-foundation.org>2019-07-13 15:42:44 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2019-07-13 15:42:44 -0700
commit3f06962273e73c5f7a651726b191d531cadef788 (patch)
tree370219bd166ac6dda105901dd316a54c2f9ac3d0
parent2260840592fbed5be98ca03c97eb8172941f27ac (diff)
parent46ce10df799fb0647a9c0e3f793e66463a8d6773 (diff)
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Merge tag 'mtd/for-5.3' of git://git.kernel.org/pub/scm/linux/kernel/git/mtd/linux
Pull MTD updates from Miquel Raynal: "This contains the following changes for MTD: MTD core changes: - New Hyperbus framework - New _is_locked (concat) implementation - Various cleanups NAND core changes: - use longest matching pattern in ->exec_op() default parser - export NAND operation tracer - add flag to indicate panic_write in MTD - use kzalloc() instead of kmalloc() and memset() Raw NAND controller drivers changes: - brcmnand: - fix BCH ECC layout for large page NAND parts - fallback to detected ecc-strength, ecc-step-size - when oops in progress use pio and interrupt polling - code refactor code to introduce helper functions - add support for v7.3 controller - FSMC: - use nand_op_trace for operation tracing - GPMI: - move all driver code into single file - various cleanups (including dmaengine changes) - use runtime PM to manage clocks - implement exec_op - MTK: - correct low level time calculation of r/w cycle - improve data sampling timing for read cycle - add validity check for CE# pin setting - fix wrongly assigned OOB buffer pointer issue - re-license MTK NAND driver as Dual MIT/GPL - STM32: - manage the get_irq error case - increase DMA completion timeouts Raw NAND chips drivers changes: - Macronix: add read-retry support Onenand driver changes: - add support for 8Gb datasize chips - avoid fall-through warnings SPI-NAND changes: - define macros for page-read ops with three-byte addresses - add support for two-byte device IDs and then for GigaDevice GD5F1GQ4UFxxG - add initial support for Paragon PN26G0xA - handle the case where the last page read has bitflips SPI-NOR core changes: - add support for the mt25ql02g and w25q16jv flashes - print error in case of jedec read id fails - is25lp256: add post BFPT fix to correct the addr_width SPI NOR controller drivers changes: - intel-spi: Add support for Intel Elkhart Lake SPI serial flash - smt32: remove the driver as the driver was replaced by spi-stm32-qspi.c - cadence-quadspi: add reset control" * tag 'mtd/for-5.3' of git://git.kernel.org/pub/scm/linux/kernel/git/mtd/linux: (60 commits) mtd: concat: implement _is_locked mtd operation mtd: concat: refactor concat_lock/concat_unlock mtd: abi: do not use C++ style comments in uapi header mtd: afs: remove unneeded NULL check mtd: rawnand: stm32_fmc2: increase DMA completion timeouts mtd: rawnand: Use kzalloc() instead of kmalloc() and memset() mtd: hyperbus: Add driver for TI's HyperBus memory controller mtd: spinand: read returns badly if the last page has bitflips mtd: spinand: Add initial support for Paragon PN26G0xA mtd: rawnand: mtk: Re-license MTK NAND driver as Dual MIT/GPL mtd: rawnand: gpmi: remove double assignment to block_size dt-bindings: mtd: brcmnand: Add brcmnand, brcmnand-v7.3 support mtd: rawnand: brcmnand: Add support for v7.3 controller mtd: rawnand: brcmnand: Refactored code to introduce helper functions mtd: rawnand: brcmnand: When oops in progress use pio and interrupt polling mtd: Add flag to indicate panic_write mtd: rawnand: Add Macronix NAND read retry support mtd: onenand: Avoid fall-through warnings mtd: spinand: Add support for GigaDevice GD5F1GQ4UFxxG mtd: spinand: Add support for two-byte device IDs ...
-rw-r--r--Documentation/devicetree/bindings/mtd/brcm,brcmnand.txt5
-rw-r--r--Documentation/devicetree/bindings/mtd/cadence-quadspi.txt5
-rw-r--r--Documentation/devicetree/bindings/mtd/cypress,hyperflash.txt13
-rw-r--r--Documentation/devicetree/bindings/mtd/stm32-quadspi.txt43
-rw-r--r--Documentation/devicetree/bindings/mtd/ti,am654-hbmc.txt51
-rw-r--r--MAINTAINERS8
-rw-r--r--drivers/dma/mxs-dma.c25
-rw-r--r--drivers/mtd/Kconfig2
-rw-r--r--drivers/mtd/Makefile1
-rw-r--r--drivers/mtd/chips/cfi_cmdset_0002.c143
-rw-r--r--drivers/mtd/hyperbus/Kconfig23
-rw-r--r--drivers/mtd/hyperbus/Makefile4
-rw-r--r--drivers/mtd/hyperbus/hbmc-am654.c147
-rw-r--r--drivers/mtd/hyperbus/hyperbus-core.c153
-rw-r--r--drivers/mtd/mtdconcat.c37
-rw-r--r--drivers/mtd/mtdcore.c3
-rw-r--r--drivers/mtd/nand/onenand/onenand_base.c5
-rw-r--r--drivers/mtd/nand/raw/brcmnand/brcmnand.c263
-rw-r--r--drivers/mtd/nand/raw/fsmc_nand.c19
-rw-r--r--drivers/mtd/nand/raw/gpmi-nand/Makefile1
-rw-r--r--drivers/mtd/nand/raw/gpmi-nand/gpmi-lib.c934
-rw-r--r--drivers/mtd/nand/raw/gpmi-nand/gpmi-nand.c1709
-rw-r--r--drivers/mtd/nand/raw/gpmi-nand/gpmi-nand.h64
-rw-r--r--drivers/mtd/nand/raw/mtk_ecc.c4
-rw-r--r--drivers/mtd/nand/raw/mtk_ecc.h2
-rw-r--r--drivers/mtd/nand/raw/mtk_nand.c88
-rw-r--r--drivers/mtd/nand/raw/nand_base.c80
-rw-r--r--drivers/mtd/nand/raw/nand_bch.c3
-rw-r--r--drivers/mtd/nand/raw/nand_macronix.c45
-rw-r--r--drivers/mtd/nand/raw/stm32_fmc2_nand.c21
-rw-r--r--drivers/mtd/nand/spi/Makefile2
-rw-r--r--drivers/mtd/nand/spi/core.c5
-rw-r--r--drivers/mtd/nand/spi/gigadevice.c79
-rw-r--r--drivers/mtd/nand/spi/paragon.c147
-rw-r--r--drivers/mtd/parsers/afs.c3
-rw-r--r--drivers/mtd/spi-nor/Kconfig7
-rw-r--r--drivers/mtd/spi-nor/Makefile1
-rw-r--r--drivers/mtd/spi-nor/cadence-quadspi.c21
-rw-r--r--drivers/mtd/spi-nor/intel-spi-pci.c1
-rw-r--r--drivers/mtd/spi-nor/spi-nor.c37
-rw-r--r--drivers/mtd/spi-nor/stm32-quadspi.c707
-rw-r--r--include/linux/dma/mxs-dma.h24
-rw-r--r--include/linux/mtd/cfi.h7
-rw-r--r--include/linux/mtd/hyperbus.h84
-rw-r--r--include/linux/mtd/mtd.h6
-rw-r--r--include/linux/mtd/onenand_regs.h1
-rw-r--r--include/linux/mtd/rawnand.h36
-rw-r--r--include/linux/mtd/spinand.h35
-rw-r--r--include/uapi/mtd/mtd-abi.h10
49 files changed, 2624 insertions, 2490 deletions
diff --git a/Documentation/devicetree/bindings/mtd/brcm,brcmnand.txt b/Documentation/devicetree/bindings/mtd/brcm,brcmnand.txt
index 0b7c3738b66c..82156dc8f304 100644
--- a/Documentation/devicetree/bindings/mtd/brcm,brcmnand.txt
+++ b/Documentation/devicetree/bindings/mtd/brcm,brcmnand.txt
@@ -28,6 +28,7 @@ Required properties:
brcm,brcmnand-v7.0
brcm,brcmnand-v7.1
brcm,brcmnand-v7.2
+ brcm,brcmnand-v7.3
brcm,brcmnand
- reg : the register start and length for NAND register region.
(optional) Flash DMA register range (if present)
@@ -101,10 +102,10 @@ Required properties:
number (e.g., 0, 1, 2, etc.)
- #address-cells : see partition.txt
- #size-cells : see partition.txt
-- nand-ecc-strength : see nand-controller.yaml
-- nand-ecc-step-size : must be 512 or 1024. See nand-controller.yaml
Optional properties:
+- nand-ecc-strength : see nand-controller.yaml
+- nand-ecc-step-size : must be 512 or 1024. See nand-controller.yaml
- nand-on-flash-bbt : boolean, to enable the on-flash BBT for this
chip-select. See nand-controller.yaml
- brcm,nand-oob-sector-size : integer, to denote the spare area sector size
diff --git a/Documentation/devicetree/bindings/mtd/cadence-quadspi.txt b/Documentation/devicetree/bindings/mtd/cadence-quadspi.txt
index 4345c3a6f530..945be7d5b236 100644
--- a/Documentation/devicetree/bindings/mtd/cadence-quadspi.txt
+++ b/Documentation/devicetree/bindings/mtd/cadence-quadspi.txt
@@ -35,6 +35,9 @@ custom properties:
(qspi_n_ss_out).
- cdns,tslch-ns : Delay in nanoseconds between setting qspi_n_ss_out low
and first bit transfer.
+- resets : Must contain an entry for each entry in reset-names.
+ See ../reset/reset.txt for details.
+- reset-names : Must include either "qspi" and/or "qspi-ocp".
Example:
@@ -50,6 +53,8 @@ Example:
cdns,fifo-depth = <128>;
cdns,fifo-width = <4>;
cdns,trigger-address = <0x00000000>;
+ resets = <&rst QSPI_RESET>, <&rst QSPI_OCP_RESET>;
+ reset-names = "qspi", "qspi-ocp";
flash0: n25q00@0 {
...
diff --git a/Documentation/devicetree/bindings/mtd/cypress,hyperflash.txt b/Documentation/devicetree/bindings/mtd/cypress,hyperflash.txt
new file mode 100644
index 000000000000..ad42f4db32f1
--- /dev/null
+++ b/Documentation/devicetree/bindings/mtd/cypress,hyperflash.txt
@@ -0,0 +1,13 @@
+Bindings for HyperFlash NOR flash chips compliant with Cypress HyperBus
+specification and supports Cypress CFI specification 1.5 command set.
+
+Required properties:
+- compatible : "cypress,hyperflash", "cfi-flash" for HyperFlash NOR chips
+- reg : Address of flash's memory map
+
+Example:
+
+ flash@0 {
+ compatible = "cypress,hyperflash", "cfi-flash";
+ reg = <0x0 0x4000000>;
+ };
diff --git a/Documentation/devicetree/bindings/mtd/stm32-quadspi.txt b/Documentation/devicetree/bindings/mtd/stm32-quadspi.txt
deleted file mode 100644
index ddd18c135148..000000000000
--- a/Documentation/devicetree/bindings/mtd/stm32-quadspi.txt
+++ /dev/null
@@ -1,43 +0,0 @@
-* STMicroelectronics Quad Serial Peripheral Interface(QuadSPI)
-
-Required properties:
-- compatible: should be "st,stm32f469-qspi"
-- reg: the first contains the register location and length.
- the second contains the memory mapping address and length
-- reg-names: should contain the reg names "qspi" "qspi_mm"
-- interrupts: should contain the interrupt for the device
-- clocks: the phandle of the clock needed by the QSPI controller
-- A pinctrl must be defined to set pins in mode of operation for QSPI transfer
-
-Optional properties:
-- resets: must contain the phandle to the reset controller.
-
-A spi flash must be a child of the nor_flash node and could have some
-properties. Also see jedec,spi-nor.txt.
-
-Required properties:
-- reg: chip-Select number (QSPI controller may connect 2 nor flashes)
-- spi-max-frequency: max frequency of spi bus
-
-Optional property:
-- spi-rx-bus-width: see ../spi/spi-bus.txt for the description
-
-Example:
-
-qspi: spi@a0001000 {
- compatible = "st,stm32f469-qspi";
- reg = <0xa0001000 0x1000>, <0x90000000 0x10000000>;
- reg-names = "qspi", "qspi_mm";
- interrupts = <91>;
- resets = <&rcc STM32F4_AHB3_RESET(QSPI)>;
- clocks = <&rcc 0 STM32F4_AHB3_CLOCK(QSPI)>;
- pinctrl-names = "default";
- pinctrl-0 = <&pinctrl_qspi0>;
-
- flash@0 {
- reg = <0>;
- spi-rx-bus-width = <4>;
- spi-max-frequency = <108000000>;
- ...
- };
-};
diff --git a/Documentation/devicetree/bindings/mtd/ti,am654-hbmc.txt b/Documentation/devicetree/bindings/mtd/ti,am654-hbmc.txt
new file mode 100644
index 000000000000..faa81c2e5da6
--- /dev/null
+++ b/Documentation/devicetree/bindings/mtd/ti,am654-hbmc.txt
@@ -0,0 +1,51 @@
+Bindings for HyperBus Memory Controller (HBMC) on TI's K3 family of SoCs
+
+Required properties:
+- compatible : "ti,am654-hbmc" for AM654 SoC
+- reg : Two entries:
+ First entry pointed to the register space of HBMC controller
+ Second entry pointing to the memory map region dedicated for
+ MMIO access to attached flash devices
+- ranges : Address translation from offset within CS to allocated MMIO
+ space in SoC
+
+Optional properties:
+- mux-controls : phandle to the multiplexer that controls selection of
+ HBMC vs OSPI inside Flash SubSystem (FSS). Default is OSPI,
+ if property is absent.
+ See Documentation/devicetree/bindings/mux/reg-mux.txt
+ for mmio-mux binding details
+
+Example:
+
+ system-controller@47000000 {
+ compatible = "syscon", "simple-mfd";
+ reg = <0x0 0x47000000 0x0 0x100>;
+ #address-cells = <2>;
+ #size-cells = <2>;
+ ranges;
+
+ hbmc_mux: multiplexer {
+ compatible = "mmio-mux";
+ #mux-control-cells = <1>;
+ mux-reg-masks = <0x4 0x2>; /* 0: reg 0x4, bit 1 */
+ };
+ };
+
+ hbmc: hyperbus@47034000 {
+ compatible = "ti,am654-hbmc";
+ reg = <0x0 0x47034000 0x0 0x100>,
+ <0x5 0x00000000 0x1 0x0000000>;
+ power-domains = <&k3_pds 55>;
+ #address-cells = <2>;
+ #size-cells = <1>;
+ ranges = <0x0 0x0 0x5 0x00000000 0x4000000>, /* CS0 - 64MB */
+ <0x1 0x0 0x5 0x04000000 0x4000000>; /* CS1 - 64MB */
+ mux-controls = <&hbmc_mux 0>;
+
+ /* Slave flash node */
+ flash@0,0 {
+ compatible = "cypress,hyperflash", "cfi-flash";
+ reg = <0x0 0x0 0x4000000>;
+ };
+ };
diff --git a/MAINTAINERS b/MAINTAINERS
index 32bb6280c219..211ea3a199bd 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -7435,6 +7435,14 @@ F: include/asm-generic/mshyperv.h
F: tools/hv/
F: Documentation/ABI/stable/sysfs-bus-vmbus
+HYPERBUS SUPPORT
+M: Vignesh Raghavendra <vigneshr@ti.com>
+S: Supported
+F: drivers/mtd/hyperbus/
+F: include/linux/mtd/hyperbus.h
+F: Documentation/devicetree/bindings/mtd/cypress,hyperflash.txt
+F: Documentation/devicetree/bindings/mtd/ti,am654-hbmc.txt
+
HYPERVISOR VIRTUAL CONSOLE DRIVER
L: linuxppc-dev@lists.ozlabs.org
S: Odd Fixes
diff --git a/drivers/dma/mxs-dma.c b/drivers/dma/mxs-dma.c
index 22cc7f68ef6e..20a9cb7cb6d3 100644
--- a/drivers/dma/mxs-dma.c
+++ b/drivers/dma/mxs-dma.c
@@ -24,6 +24,7 @@
#include <linux/of_device.h>
#include <linux/of_dma.h>
#include <linux/list.h>
+#include <linux/dma/mxs-dma.h>
#include <asm/irq.h>
@@ -77,6 +78,7 @@
#define BM_CCW_COMMAND (3 << 0)
#define CCW_CHAIN (1 << 2)
#define CCW_IRQ (1 << 3)
+#define CCW_WAIT4RDY (1 << 5)
#define CCW_DEC_SEM (1 << 6)
#define CCW_WAIT4END (1 << 7)
#define CCW_HALT_ON_TERM (1 << 8)
@@ -477,16 +479,16 @@ static void mxs_dma_free_chan_resources(struct dma_chan *chan)
* ......
* ->device_prep_slave_sg(0);
* ......
- * ->device_prep_slave_sg(DMA_PREP_INTERRUPT | DMA_CTRL_ACK);
+ * ->device_prep_slave_sg(DMA_CTRL_ACK);
* ......
* [3] If there are more than two DMA commands in the DMA chain, the code
* should be:
* ......
* ->device_prep_slave_sg(0); // First
* ......
- * ->device_prep_slave_sg(DMA_PREP_INTERRUPT [| DMA_CTRL_ACK]);
+ * ->device_prep_slave_sg(DMA_CTRL_ACK]);
* ......
- * ->device_prep_slave_sg(DMA_PREP_INTERRUPT | DMA_CTRL_ACK); // Last
+ * ->device_prep_slave_sg(DMA_CTRL_ACK); // Last
* ......
*/
static struct dma_async_tx_descriptor *mxs_dma_prep_slave_sg(
@@ -500,13 +502,12 @@ static struct dma_async_tx_descriptor *mxs_dma_prep_slave_sg(
struct scatterlist *sg;
u32 i, j;
u32 *pio;
- bool append = flags & DMA_PREP_INTERRUPT;
- int idx = append ? mxs_chan->desc_count : 0;
+ int idx = 0;
- if (mxs_chan->status == DMA_IN_PROGRESS && !append)
- return NULL;
+ if (mxs_chan->status == DMA_IN_PROGRESS)
+ idx = mxs_chan->desc_count;
- if (sg_len + (append ? idx : 0) > NUM_CCW) {
+ if (sg_len + idx > NUM_CCW) {
dev_err(mxs_dma->dma_device.dev,
"maximum number of sg exceeded: %d > %d\n",
sg_len, NUM_CCW);
@@ -520,7 +521,7 @@ static struct dma_async_tx_descriptor *mxs_dma_prep_slave_sg(
* If the sg is prepared with append flag set, the sg
* will be appended to the last prepared sg.
*/
- if (append) {
+ if (idx) {
BUG_ON(idx < 1);
ccw = &mxs_chan->ccw[idx - 1];
ccw->next = mxs_chan->ccw_phys + sizeof(*ccw) * idx;
@@ -541,12 +542,14 @@ static struct dma_async_tx_descriptor *mxs_dma_prep_slave_sg(
ccw->bits = 0;
ccw->bits |= CCW_IRQ;
ccw->bits |= CCW_DEC_SEM;
- if (flags & DMA_CTRL_ACK)
+ if (flags & MXS_DMA_CTRL_WAIT4END)
ccw->bits |= CCW_WAIT4END;
ccw->bits |= CCW_HALT_ON_TERM;
ccw->bits |= CCW_TERM_FLUSH;
ccw->bits |= BF_CCW(sg_len, PIO_NUM);
ccw->bits |= BF_CCW(MXS_DMA_CMD_NO_XFER, COMMAND);
+ if (flags & MXS_DMA_CTRL_WAIT4RDY)
+ ccw->bits |= CCW_WAIT4RDY;
} else {
for_each_sg(sgl, sg, sg_len, i) {
if (sg_dma_len(sg) > MAX_XFER_BYTES) {
@@ -573,7 +576,7 @@ static struct dma_async_tx_descriptor *mxs_dma_prep_slave_sg(
ccw->bits &= ~CCW_CHAIN;
ccw->bits |= CCW_IRQ;
ccw->bits |= CCW_DEC_SEM;
- if (flags & DMA_CTRL_ACK)
+ if (flags & MXS_DMA_CTRL_WAIT4END)
ccw->bits |= CCW_WAIT4END;
}
}
diff --git a/drivers/mtd/Kconfig b/drivers/mtd/Kconfig
index fb31a7f649a3..80a6e2dcd085 100644
--- a/drivers/mtd/Kconfig
+++ b/drivers/mtd/Kconfig
@@ -274,4 +274,6 @@ source "drivers/mtd/spi-nor/Kconfig"
source "drivers/mtd/ubi/Kconfig"
+source "drivers/mtd/hyperbus/Kconfig"
+
endif # MTD
diff --git a/drivers/mtd/Makefile b/drivers/mtd/Makefile
index 806287e80e84..62d649a959e2 100644
--- a/drivers/mtd/Makefile
+++ b/drivers/mtd/Makefile
@@ -34,3 +34,4 @@ obj-y += chips/ lpddr/ maps/ devices/ nand/ tests/
obj-$(CONFIG_MTD_SPI_NOR) += spi-nor/
obj-$(CONFIG_MTD_UBI) += ubi/
+obj-$(CONFIG_MTD_HYPERBUS) += hyperbus/
diff --git a/drivers/mtd/chips/cfi_cmdset_0002.c b/drivers/mtd/chips/cfi_cmdset_0002.c
index c8fa5906bdf9..f4da7bd552e9 100644
--- a/drivers/mtd/chips/cfi_cmdset_0002.c
+++ b/drivers/mtd/chips/cfi_cmdset_0002.c
@@ -49,6 +49,16 @@
#define SST49LF008A 0x005a
#define AT49BV6416 0x00d6
+/*
+ * Status Register bit description. Used by flash devices that don't
+ * support DQ polling (e.g. HyperFlash)
+ */
+#define CFI_SR_DRB BIT(7)
+#define CFI_SR_ESB BIT(5)
+#define CFI_SR_PSB BIT(4)
+#define CFI_SR_WBASB BIT(3)
+#define CFI_SR_SLSB BIT(1)
+
static int cfi_amdstd_read (struct mtd_info *, loff_t, size_t, size_t *, u_char *);
static int cfi_amdstd_write_words(struct mtd_info *, loff_t, size_t, size_t *, const u_char *);
static int cfi_amdstd_write_buffers(struct mtd_info *, loff_t, size_t, size_t *, const u_char *);
@@ -97,6 +107,50 @@ static struct mtd_chip_driver cfi_amdstd_chipdrv = {
.module = THIS_MODULE
};
+/*
+ * Use status register to poll for Erase/write completion when DQ is not
+ * supported. This is indicated by Bit[1:0] of SoftwareFeatures field in
+ * CFI Primary Vendor-Specific Extended Query table 1.5
+ */
+static int cfi_use_status_reg(struct cfi_private *cfi)
+{
+ struct cfi_pri_amdstd *extp = cfi->cmdset_priv;
+ u8 poll_mask = CFI_POLL_STATUS_REG | CFI_POLL_DQ;
+
+ return extp->MinorVersion >= '5' &&
+ (extp->SoftwareFeatures & poll_mask) == CFI_POLL_STATUS_REG;
+}
+
+static void cfi_check_err_status(struct map_info *map, struct flchip *chip,
+ unsigned long adr)
+{
+ struct cfi_private *cfi = map->fldrv_priv;
+ map_word status;
+
+ if (!cfi_use_status_reg(cfi))
+ return;
+
+ cfi_send_gen_cmd(0x70, cfi->addr_unlock1, chip->start, map, cfi,
+ cfi->device_type, NULL);
+ status = map_read(map, adr);
+
+ if (map_word_bitsset(map, status, CMD(0x3a))) {
+ unsigned long chipstatus = MERGESTATUS(status);
+
+ if (chipstatus & CFI_SR_ESB)
+ pr_err("%s erase operation failed, status %lx\n",
+ map->name, chipstatus);
+ if (chipstatus & CFI_SR_PSB)
+ pr_err("%s program operation failed, status %lx\n",
+ map->name, chipstatus);
+ if (chipstatus & CFI_SR_WBASB)
+ pr_err("%s buffer program command aborted, status %lx\n",
+ map->name, chipstatus);
+ if (chipstatus & CFI_SR_SLSB)
+ pr_err("%s sector write protected, status %lx\n",
+ map->name, chipstatus);
+ }
+}
/* #define DEBUG_CFI_FEATURES */
@@ -742,10 +796,25 @@ static struct mtd_info *cfi_amdstd_setup(struct mtd_info *mtd)
* correctly and is therefore not done (particularly with interleaved chips
* as each chip must be checked independently of the others).
*/
-static int __xipram chip_ready(struct map_info *map, unsigned long addr)
+static int __xipram chip_ready(struct map_info *map, struct flchip *chip,
+ unsigned long addr)
{
+ struct cfi_private *cfi = map->fldrv_priv;
map_word d, t;
+ if (cfi_use_status_reg(cfi)) {
+ map_word ready = CMD(CFI_SR_DRB);
+ /*
+ * For chips that support status register, check device
+ * ready bit
+ */
+ cfi_send_gen_cmd(0x70, cfi->addr_unlock1, chip->start, map, cfi,
+ cfi->device_type, NULL);
+ d = map_read(map, addr);
+
+ return map_word_andequal(map, d, ready, ready);
+ }
+
d = map_read(map, addr);
t = map_read(map, addr);
@@ -767,10 +836,30 @@ static int __xipram chip_ready(struct map_info *map, unsigned long addr)
* as each chip must be checked independently of the others).
*
*/
-static int __xipram chip_good(struct map_info *map, unsigned long addr, map_word expected)
+static int __xipram chip_good(struct map_info *map, struct flchip *chip,
+ unsigned long addr, map_word expected)
{
+ struct cfi_private *cfi = map->fldrv_priv;
map_word oldd, curd;
+ if (cfi_use_status_reg(cfi)) {
+ map_word ready = CMD(CFI_SR_DRB);
+ map_word err = CMD(CFI_SR_PSB | CFI_SR_ESB);
+ /*
+ * For chips that support status register, check device
+ * ready bit and Erase/Program status bit to know if
+ * operation succeeded.
+ */
+ cfi_send_gen_cmd(0x70, cfi->addr_unlock1, chip->start, map, cfi,
+ cfi->device_type, NULL);
+ curd = map_read(map, addr);
+
+ if (map_word_andequal(map, curd, ready, ready))
+ return !map_word_bitsset(map, curd, err);
+
+ return 0;
+ }
+
oldd = map_read(map, addr);
curd = map_read(map, addr);
@@ -792,7 +881,7 @@ static int get_chip(struct map_info *map, struct flchip *chip, unsigned long adr
case FL_STATUS:
for (;;) {
- if (chip_ready(map, adr))
+ if (chip_ready(map, chip, adr))
break;
if (time_after(jiffies, timeo)) {
@@ -830,7 +919,7 @@ static int get_chip(struct map_info *map, struct flchip *chip, unsigned long adr
chip->state = FL_ERASE_SUSPENDING;
chip->erase_suspended = 1;
for (;;) {
- if (chip_ready(map, adr))
+ if (chip_ready(map, chip, adr))
break;
if (time_after(jiffies, timeo)) {
@@ -1362,7 +1451,7 @@ static int do_otp_lock(struct map_info *map, struct flchip *chip, loff_t adr,
/* wait for chip to become ready */
timeo = jiffies + msecs_to_jiffies(2);
for (;;) {
- if (chip_ready(map, adr))
+ if (chip_ready(map, chip, adr))
break;
if (time_after(jiffies, timeo)) {
@@ -1628,22 +1717,24 @@ static int __xipram do_write_oneword(struct map_info *map, struct flchip *chip,
continue;
}
- if (time_after(jiffies, timeo) && !chip_ready(map, adr)){
+ if (time_after(jiffies, timeo) &&
+ !chip_ready(map, chip, adr)) {
xip_enable(map, chip, adr);
printk(KERN_WARNING "MTD %s(): software timeout\n", __func__);
xip_disable(map, chip, adr);
break;
}
- if (chip_ready(map, adr))
+ if (chip_ready(map, chip, adr))
break;
/* Latency issues. Drop the lock, wait a while and retry */
UDELAY(map, chip, adr, 1);
}
/* Did we succeed? */
- if (!chip_good(map, adr, datum)) {
+ if (!chip_good(map, chip, adr, datum)) {
/* reset on all failures. */
+ cfi_check_err_status(map, chip, adr);
map_write(map, CMD(0xF0), chip->start);
/* FIXME - should have reset delay before continuing */
@@ -1881,10 +1972,11 @@ static int __xipram do_write_buffer(struct map_info *map, struct flchip *chip,
* We check "time_after" and "!chip_good" before checking "chip_good" to avoid
* the failure due to scheduling.
*/
- if (time_after(jiffies, timeo) && !chip_good(map, adr, datum))
+ if (time_after(jiffies, timeo) &&
+ !chip_good(map, chip, adr, datum))
break;
- if (chip_good(map, adr, datum)) {
+ if (chip_good(map, chip, adr, datum)) {
xip_enable(map, chip, adr);
goto op_done;
}
@@ -1901,6 +1993,7 @@ static int __xipram do_write_buffer(struct map_info *map, struct flchip *chip,
* See e.g.
* http://www.spansion.com/Support/Application%20Notes/MirrorBit_Write_Buffer_Prog_Page_Buffer_Read_AN.pdf
*/
+ cfi_check_err_status(map, chip, adr);
cfi_send_gen_cmd(0xAA, cfi->addr_unlock1, chip->start, map, cfi,
cfi->device_type, NULL);
cfi_send_gen_cmd(0x55, cfi->addr_unlock2, chip->start, map, cfi,
@@ -2018,7 +2111,7 @@ static int cfi_amdstd_panic_wait(struct map_info *map, struct flchip *chip,
* If the driver thinks the chip is idle, and no toggle bits
* are changing, then the chip is actually idle for sure.
*/
- if (chip->state == FL_READY && chip_ready(map, adr))
+ if (chip->state == FL_READY && chip_ready(map, chip, adr))
return 0;
/*
@@ -2035,7 +2128,7 @@ static int cfi_amdstd_panic_wait(struct map_info *map, struct flchip *chip,
/* wait for the chip to become ready */
for (i = 0; i < jiffies_to_usecs(timeo); i++) {
- if (chip_ready(map, adr))
+ if (chip_ready(map, chip, adr))
return 0;
udelay(1);
@@ -2099,14 +2192,15 @@ retry:
map_write(map, datum, adr);
for (i = 0; i < jiffies_to_usecs(uWriteTimeout); i++) {
- if (chip_ready(map, adr))
+ if (chip_ready(map, chip, adr))
break;
udelay(1);
}
- if (!chip_good(map, adr, datum)) {
+ if (!chip_good(map, chip, adr, datum)) {
/* reset on all failures. */
+ cfi_check_err_status(map, chip, adr);
map_write(map, CMD(0xF0), chip->start);
/* FIXME - should have reset delay before continuing */
@@ -2300,7 +2394,7 @@ static int __xipram do_erase_chip(struct map_info *map, struct flchip *chip)
chip->erase_suspended = 0;
}
- if (chip_good(map, adr, map_word_ff(map)))
+ if (chip_good(map, chip, adr, map_word_ff(map)))
break;
if (time_after(jiffies, timeo)) {
@@ -2316,6 +2410,7 @@ static int __xipram do_erase_chip(struct map_info *map, struct flchip